/* iOS-inspired Liquid Glass design layer. Functional layout remains in style.css. */
:root {
  --duration-instant: 100ms;
  --duration-fast: 180ms;
  --duration-normal: 320ms;
  --duration-slow: 560ms;
  --spring-soft: cubic-bezier(.22, .78, .24, 1);
  --spring-medium: cubic-bezier(.18, .9, .24, 1.12);
  --spring-hard: cubic-bezier(.16, 1, .3, 1.18);

  --glass-blur-xs: 8px;
  --glass-blur-sm: 12px;
  --glass-blur-md: 18px;
  --glass-blur-lg: 24px;
  --glass-saturation: 145%;
  --glass-surface: rgba(255, 255, 255, .64);
  --glass-surface-strong: rgba(255, 255, 255, .8);
  --glass-surface-soft: rgba(255, 255, 255, .46);
  --glass-border: rgba(255, 255, 255, .72);
  --glass-border-subtle: rgba(65, 91, 137, .13);
  --glass-highlight: inset 0 1px 0 rgba(255, 255, 255, .72);
  --glass-shadow-sm: 0 8px 24px rgba(37, 65, 111, .08);
  --glass-shadow-md: 0 18px 48px rgba(37, 65, 111, .11);
  --glass-shadow-lg: 0 30px 80px rgba(31, 57, 99, .16);
  --glass-shadow-float: 0 18px 44px rgba(35, 66, 118, .18), 0 2px 8px rgba(35, 66, 118, .08);

  --radius-control: 14px;
  --radius-card: 22px;
  --radius-panel: 26px;
  --radius-floating: 30px;
  --touch-target: 44px;

  --navy: #17345f;
  --blue: #3478d4;
  --blue-dark: #1f5fad;
  --cream: #edf4ff;
  --white: rgba(255, 255, 255, .84);
  --ink: #142946;
  --muted: #60718a;
  --line: rgba(56, 89, 137, .14);
  --shadow: var(--glass-shadow-md);
  color-scheme: light;
  background: #eaf2ff;
}

html[data-theme="dark"] {
  --navy: #132743;
  --blue: #76aaf4;
  --blue-dark: #9ac2fa;
  --cream: #101722;
  --white: rgba(28, 39, 55, .82);
  --ink: #f2f6fc;
  --muted: #a7b5c8;
  --line: rgba(183, 210, 246, .13);
  --green: #7fd5aa;
  --green-bg: rgba(52, 133, 91, .19);
  --red: #ff9aa6;
  --red-bg: rgba(166, 61, 75, .19);
  --orange: #f0b56f;
  --orange-bg: rgba(191, 116, 45, .18);
  --orange-line: rgba(240, 181, 111, .3);
  --coral: #f29aa4;
  --coral-bg: rgba(189, 70, 82, .18);
  --violet: #c4a7f4;
  --violet-bg: rgba(126, 92, 183, .2);
  --teal: #78d6d5;
  --teal-bg: rgba(45, 135, 135, .19);
  --amber: #efbd7c;
  --amber-bg: rgba(172, 111, 42, .19);
  --glass-surface: rgba(25, 35, 50, .62);
  --glass-surface-strong: rgba(29, 41, 58, .82);
  --glass-surface-soft: rgba(33, 46, 64, .44);
  --glass-border: rgba(211, 228, 250, .14);
  --glass-border-subtle: rgba(181, 207, 241, .1);
  --glass-highlight: inset 0 1px 0 rgba(255, 255, 255, .1);
  --glass-shadow-sm: 0 10px 28px rgba(0, 4, 12, .2);
  --glass-shadow-md: 0 20px 54px rgba(0, 4, 12, .3);
  --glass-shadow-lg: 0 34px 90px rgba(0, 3, 10, .42);
  --glass-shadow-float: 0 20px 54px rgba(0, 3, 10, .4), 0 2px 10px rgba(0, 3, 10, .25);
  --shadow: var(--glass-shadow-md);
  color-scheme: dark;
  background: #0d141f;
}

html { scroll-behavior: smooth; }

body {
  position: relative;
  isolation: isolate;
  overflow-x: clip;
  background:
    radial-gradient(circle at 8% -4%, rgba(78, 145, 239, .28), transparent 34rem),
    radial-gradient(circle at 92% 16%, rgba(118, 182, 255, .2), transparent 30rem),
    linear-gradient(155deg, #f6f9ff 0%, #eaf2ff 48%, #f2f7ff 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -2;
  width: 42vmax;
  aspect-ratio: 1;
  border-radius: 50%;
  opacity: .34;
  pointer-events: none;
  transform: translate3d(0, 0, 0);
}

body::before { top: 18%; left: -25vmax; background: #a9c9ff; }
body::after { right: -28vmax; bottom: -9%; background: #c7d9ff; }

html[data-theme="dark"] body {
  background:
    radial-gradient(circle at 10% -6%, rgba(50, 103, 174, .34), transparent 34rem),
    radial-gradient(circle at 92% 18%, rgba(30, 77, 132, .24), transparent 30rem),
    linear-gradient(155deg, #111c2a 0%, #0c131e 54%, #121b28 100%);
  background-attachment: fixed;
}

html[data-theme="dark"] body::before { background: #285d9b; opacity: .2; }
html[data-theme="dark"] body::after { background: #203f69; opacity: .18; }

/* Win over legacy dark-theme component rules without changing their markup. */
html[data-theme="dark"] .app-navigation {
  border-color: var(--glass-border);
  background: rgba(18, 28, 42, .86);
  box-shadow: var(--glass-highlight), var(--glass-shadow-lg);
}

html[data-theme="dark"] .overview-item,
html[data-theme="dark"] .wallet-card,
html[data-theme="dark"] .credit-card,
html[data-theme="dark"] .detail-panel,
html[data-theme="dark"] .card-form,
html[data-theme="dark"] .notification-panel,
html[data-theme="dark"] .setup-panel,
html[data-theme="dark"] .login-panel,
html[data-theme="dark"] .money-summary,
html[data-theme="dark"] .transaction-section,
html[data-theme="dark"] .category-panel,
html[data-theme="dark"] .history-panel,
html[data-theme="dark"] .history-kpi,
html[data-theme="dark"] .split-panel,
html[data-theme="dark"] .split-groups-section,
html[data-theme="dark"] .split-invite-card,
html[data-theme="dark"] .split-entry-card,
html[data-theme="dark"] .navigation-settings-card,
html[data-theme="dark"] .mobile-record-card,
html[data-theme="dark"] .split-group-card {
  border-color: var(--glass-border);
  background: rgba(22, 33, 48, .68);
  box-shadow: var(--glass-highlight), var(--glass-shadow-md);
}

html[data-theme="dark"] .wallet-card--paused { background: rgba(20, 29, 42, .62); }
html[data-theme="dark"] .eyebrow { color: #8dbaff; }
html[data-theme="dark"] .transaction-type-toggle input:checked + span {
  color: #dcebff;
  background: rgba(52, 120, 212, .25);
  box-shadow: inset 0 0 0 1px rgba(132, 182, 247, .18);
}

html[data-theme="dark"] .app-navigation__action,
html[data-theme="dark"] .app-navigation__action--split,
html[data-theme="dark"] .app-navigation__links a.is-active,
html[data-theme="dark"] .app-navigation__footer a.is-active {
  border-color: rgba(134, 181, 241, .18);
  background: rgba(61, 106, 164, .2);
}

html[data-theme="dark"] .field input,
html[data-theme="dark"] .field select,
html[data-theme="dark"] .field textarea,
html[data-theme="dark"] .split-compact-form input,
html[data-theme="dark"] .bank-picker__trigger,
html[data-theme="dark"] .day-select__trigger,
html[data-theme="dark"] .history-select__trigger,
html[data-theme="dark"] .category-picker__trigger,
html[data-theme="dark"] .transaction-date-picker__trigger,
html[data-theme="dark"] .member-picker__trigger,
html[data-theme="dark"] .split-value input,
html[data-theme="dark"] .split-amount-input input,
html[data-theme="dark"] .split-type-options label > span,
html[data-theme="dark"] .split-participant-list article,
html[data-theme="dark"] .navigation-toggle,
html[data-theme="dark"] .navigation-pin-list label,
html[data-theme="dark"] .navigation-choice-list label > span {
  color: var(--ink);
  border-color: var(--glass-border-subtle);
  background: rgba(15, 25, 38, .68);
}

html[data-theme="dark"] .bank-picker__panel,
html[data-theme="dark"] .day-select__panel,
html[data-theme="dark"] .history-select__panel,
html[data-theme="dark"] .category-picker__panel,
html[data-theme="dark"] .transaction-date-picker__panel,
html[data-theme="dark"] .member-picker__panel,
html[data-theme="dark"] .history-export-panel,
html[data-theme="dark"] .split-submit-bar,
html[data-theme="dark"] .navigation-settings-submit {
  color: var(--ink);
  border-color: var(--glass-border);
  background: rgba(21, 32, 47, .9);
  box-shadow: var(--glass-highlight), var(--glass-shadow-float);
}

::selection { color: #fff; background: rgba(38, 111, 211, .72); }

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--blue) 46%, transparent);
  outline-offset: 2px;
}

/* Layer 1: floating navigation and global progress. */
.topbar {
  position: sticky;
  z-index: 60;
  top: max(8px, env(safe-area-inset-top));
  min-height: 64px;
  height: auto;
  margin-top: 8px;
  padding: 10px 18px;
  border: 1px solid var(--glass-border);
  border-radius: 22px;
  background: var(--glass-surface-soft);
  box-shadow: var(--glass-highlight), var(--glass-shadow-sm);
  transition: background var(--duration-normal) ease, box-shadow var(--duration-normal) ease, transform var(--duration-normal) var(--spring-soft);
}

.topbar.is-scrolled {
  background: var(--glass-surface-strong);
  box-shadow: var(--glass-highlight), var(--glass-shadow-float);
  transform: translate3d(0, 1px, 0) scale(.995);
}

.brand-mark {
  width: 38px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, .25);
  border-radius: 12px;
  background: linear-gradient(145deg, #397bd5, #173e75);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .34), 0 8px 18px rgba(32, 83, 151, .24);
}

html[data-theme="dark"] .brand-mark {
  border-color: rgba(198, 222, 252, .2);
  background: linear-gradient(145deg, #315f99, #142b49);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .15), 0 10px 24px rgba(0, 4, 12, .35);
}

.page-progress {
  top: max(12px, env(safe-area-inset-top));
  height: 10px;
  border-color: var(--glass-border);
  background: var(--glass-surface-strong);
  box-shadow: var(--glass-highlight), var(--glass-shadow-float);
}

.navigation-menu-button,
.theme-toggle {
  width: var(--touch-target);
  height: var(--touch-target);
  border-color: var(--glass-border);
  border-radius: 15px;
  background: var(--glass-surface-strong);
  box-shadow: var(--glass-highlight), var(--glass-shadow-sm);
}

.app-navigation {
  padding: max(16px, env(safe-area-inset-top)) 14px max(16px, env(safe-area-inset-bottom));
  border-color: var(--glass-border);
  background: var(--glass-surface-strong);
  box-shadow: var(--glass-highlight), var(--glass-shadow-lg);
  transition: transform var(--duration-normal) var(--spring-soft), opacity var(--duration-fast) ease;
}

.app-navigation__action,
.app-navigation__links a,
.app-navigation__pinned a,
.app-navigation__footer a,
.app-navigation__footer button {
  border-radius: 14px;
  transition: transform var(--duration-fast) var(--spring-medium), background var(--duration-fast) ease, color var(--duration-fast) ease;
}

.app-navigation__links a.is-active,
.app-navigation__footer a.is-active {
  background: color-mix(in srgb, var(--blue) 13%, var(--glass-surface-strong));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--blue) 20%, transparent);
}

.brand,
.app-navigation__links a,
.app-navigation__pinned a,
.app-navigation__footer a,
.app-navigation__footer button,
.month-switcher a,
.analysis-link,
.back-link,
.section-view-link { min-height: var(--touch-target); }

.brand,
.analysis-link,
.back-link,
.section-view-link { display: inline-flex; align-items: center; }

.app-navigation__header > button,
.month-switcher a { width: var(--touch-target); height: var(--touch-target); }

.navigation-overlay { background: rgba(10, 20, 35, .34); }

.module-nav {
  border-color: var(--glass-border);
  border-radius: 16px;
  background: var(--glass-surface-soft);
  box-shadow: var(--glass-highlight);
}

.module-nav a { min-height: 40px; border-radius: 12px; }
.module-nav a.is-active { background: linear-gradient(145deg, #3478d4, #235da8); box-shadow: 0 8px 22px rgba(39, 101, 181, .26); }

/* Layer 2: reusable glass surfaces. */
.overview-item,
.wallet-card,
.credit-card,
.detail-panel,
.card-form,
.notification-panel,
.setup-panel,
.login-panel,
.money-summary,
.transaction-section,
.category-panel,
.history-panel,
.history-kpi,
.split-panel,
.split-groups-section,
.split-invite-card,
.split-entry-card,
.navigation-settings-card,
.mobile-record-card,
.split-group-card {
  border-color: var(--glass-border);
  background: var(--glass-surface);
  box-shadow: var(--glass-highlight), var(--glass-shadow-md);
}

.wallet-card,
.credit-card,
.detail-panel,
.card-form,
.history-panel,
.split-panel,
.split-entry-card,
.navigation-settings-card { border-radius: var(--radius-panel); }

.overview-item,
.money-summary,
.history-kpi,
.split-group-card,
.mobile-record-card { border-radius: var(--radius-card); }

.wallet-card { overflow: clip; }
.wallet-card__accent { width: 4px; opacity: .82; box-shadow: 2px 0 12px color-mix(in srgb, var(--status-color) 34%, transparent); }
.payment-focus,
.date-facts,
.split-group-card footer,
.mobile-record-card__details { border-color: var(--glass-border-subtle); background: color-mix(in srgb, var(--glass-surface-strong) 58%, transparent); }

.status-badge,
.countdown,
.split-source-badge,
.split-sync-badge { border: 1px solid color-mix(in srgb, currentColor 16%, transparent); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .12); }

.summary-card,
.detail-due {
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: var(--radius-card);
  background: linear-gradient(145deg, rgba(53, 119, 209, .95), rgba(23, 62, 112, .96));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .25), 0 18px 42px rgba(30, 79, 144, .24);
}

/* Controls: tactile, touch-first and legible over translucent layers. */
.button,
.payment-action,
.transaction-action-button,
.secondary-actions a,
.secondary-actions button {
  min-height: var(--touch-target);
  border-color: var(--glass-border);
  border-radius: var(--radius-control);
  background: var(--glass-surface-strong);
  box-shadow: var(--glass-highlight), var(--glass-shadow-sm);
  transition: transform var(--duration-fast) var(--spring-medium), box-shadow var(--duration-fast) ease, filter var(--duration-fast) ease, background var(--duration-fast) ease;
  -webkit-tap-highlight-color: transparent;
}

.button-primary,
html[data-theme="dark"] .button-primary {
  color: #fff;
  border-color: rgba(255, 255, 255, .2);
  background: linear-gradient(145deg, #4287e4, #2161b4);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .34), 0 12px 28px rgba(38, 103, 190, .3);
}

.button:active,
.payment-action:active,
.transaction-action-button:active,
.secondary-actions a:active,
.secondary-actions button:active,
.navigation-menu-button:active,
.theme-toggle:active,
.app-navigation a:active,
.split-group-card__main:active,
.overview-item:active,
.wallet-card:has(.wallet-card__main-link:active) {
  transform: translate3d(0, 1px, 0) scale(.97);
  transition-duration: var(--duration-instant);
}

.field input,
.field select,
.field textarea,
.split-compact-form input,
.bank-picker__trigger,
.day-select__trigger,
.history-select__trigger,
.category-picker__trigger,
.transaction-date-picker__trigger,
.member-picker__trigger,
.split-value input,
.split-amount-input input {
  min-height: 50px;
  border-color: var(--glass-border-subtle);
  border-radius: var(--radius-control);
  color: var(--ink);
  background: color-mix(in srgb, var(--glass-surface-strong) 86%, transparent);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .18);
  transition: transform var(--duration-fast) var(--spring-soft), border-color var(--duration-fast) ease, box-shadow var(--duration-fast) ease, background var(--duration-fast) ease;
}

.field input:focus,
.field select:focus,
.field textarea:focus,
.split-compact-form input:focus,
.bank-picker__trigger[aria-expanded="true"],
.day-select__trigger[aria-expanded="true"],
.history-select__trigger[aria-expanded="true"],
.category-picker__trigger[aria-expanded="true"],
.transaction-date-picker__trigger[aria-expanded="true"],
.member-picker__trigger[aria-expanded="true"] {
  border-color: color-mix(in srgb, var(--blue) 62%, transparent);
  background: var(--glass-surface-strong);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--blue) 15%, transparent), var(--glass-highlight);
  transform: translate3d(0, -1px, 0);
}

.switch { width: 48px; height: 28px; background: rgba(99, 113, 132, .36); box-shadow: inset 0 2px 5px rgba(23, 38, 59, .15); }
.switch::after { top: 3px; left: 3px; width: 22px; height: 22px; box-shadow: 0 3px 8px rgba(18, 34, 55, .25); }
.switch-row input:checked + .switch { background: linear-gradient(145deg, #4b91ec, #2670ce); }
.switch-row input:checked + .switch::after { transform: translate3d(20px, 0, 0); }

.calendar-heading button,
.calendar-today,
.calendar-days button,
.day-picker button,
.bank-options button,
.history-select__options button,
.category-options button,
.member-picker__panel button,
.split-burden-toggle button,
.split-filter-select__panel .history-select__options button { min-height: var(--touch-target); }

.split-check { border-radius: 8px; background: var(--glass-surface-strong); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .2); }
.split-type-options label > span,
.split-participant-list article,
.navigation-toggle,
.navigation-pin-list label,
.navigation-choice-list label > span { border-color: var(--glass-border-subtle); border-radius: 17px; background: color-mix(in srgb, var(--glass-surface-soft) 74%, transparent); }

/* Floating layers: dropdowns, dialogs, toasts and sticky actions. */
.bank-picker__panel,
.day-select__panel,
.history-select__panel,
.category-picker__panel,
.transaction-date-picker__panel,
.member-picker__panel,
.history-export-panel,
.split-submit-bar,
.navigation-settings-submit {
  border-color: var(--glass-border);
  border-radius: var(--radius-card);
  background: var(--glass-surface-strong);
  box-shadow: var(--glass-highlight), var(--glass-shadow-float);
}

.bank-picker__panel:not([hidden]),
.day-select__panel:not([hidden]),
.history-select__panel:not([hidden]),
.category-picker__panel:not([hidden]),
.transaction-date-picker__panel:not([hidden]),
.member-picker__panel:not([hidden]) {
  transform-origin: 50% 0;
  animation: glassPopoverIn var(--duration-normal) var(--spring-medium) both;
}

.history-export-backdrop { background: rgba(9, 18, 31, .42); }
.history-export-panel { border-radius: var(--radius-floating); animation: glassDialogIn var(--duration-normal) var(--spring-medium) both; }
.flash-stack { position: relative; z-index: 55; }
.flash { border: 1px solid var(--glass-border); border-radius: 16px; box-shadow: var(--glass-highlight), var(--glass-shadow-float); animation: glassToastIn var(--duration-slow) var(--spring-hard) both; }
.flash-success { background: color-mix(in srgb, var(--green-bg) 68%, var(--glass-surface-strong)); }
.flash-error { background: color-mix(in srgb, var(--red-bg) 68%, var(--glass-surface-strong)); }

/* Charts and tables retain data semantics while gaining depth. */
.expense-chart,
.history-category-pie,
.split-pie { box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .14), 0 18px 38px rgba(35, 70, 119, .15); }
.expense-chart > div,
.history-category-pie-center,
.split-pie-center { border: 1px solid var(--glass-border); background: var(--glass-surface-strong); box-shadow: var(--glass-highlight), inset 0 4px 18px rgba(35, 70, 119, .07); }
.history-category-legend article,
.split-chart-legend article { border-radius: 15px; background: color-mix(in srgb, var(--glass-surface-soft) 70%, transparent); transition: transform var(--duration-fast) var(--spring-medium), background var(--duration-fast) ease; }
.category-progress,
.spending-period-track { overflow: hidden; background: color-mix(in srgb, var(--blue) 9%, var(--glass-surface-soft)); }
.category-progress span { box-shadow: 0 0 14px color-mix(in srgb, currentColor 35%, transparent); }
.split-sheet-wrap { border-color: var(--glass-border); border-radius: 18px; background: var(--glass-surface-soft); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .1); }
.split-sheet th { background: color-mix(in srgb, var(--glass-surface-strong) 92%, transparent); }
.split-sheet tr { transition: background var(--duration-fast) ease; }
.split-sheet tbody tr:hover { background: color-mix(in srgb, var(--blue) 7%, transparent); }

/* Baseline-preserving consistency polish. Backgrounds, charts, heatmaps and motion stay unchanged. */
.app-navigation__selection { display: none; }

.expense-chart > div,
.history-category-pie-center,
.split-pie-center {
  background:
    linear-gradient(var(--glass-surface-strong), var(--glass-surface-strong)),
    var(--cream);
}

.overview-guide,
.status-empty,
.empty-state,
.history-period,
.history-alerts,
.split-expense-filters,
.item-suggestion-shell,
.split-accounting-sync,
.navigation-settings-empty,
.mobile-table-view-toggle {
  border-color: var(--glass-border);
  background: var(--glass-surface-soft);
  box-shadow: var(--glass-highlight), var(--glass-shadow-sm);
}

.history-alert-list span,
.category-change,
.split-settlement-list article,
.split-expense-row,
.item-suggestions span {
  border-color: var(--glass-border-subtle);
  background: color-mix(in srgb, var(--glass-surface-strong) 72%, transparent);
  box-shadow: var(--glass-highlight);
}

.setup-note {
  color: var(--blue-dark);
  border: 1px solid color-mix(in srgb, var(--blue) 28%, var(--glass-border));
  background: color-mix(in srgb, var(--blue) 9%, var(--glass-surface-soft));
  box-shadow: var(--glass-highlight), var(--glass-shadow-sm);
}

.history-select__custom input,
.category-custom-input input,
.bank-search input,
.item-custom-title input {
  min-height: 44px;
  border-color: var(--glass-border-subtle);
  border-radius: var(--radius-control);
  color: var(--ink);
  background: color-mix(in srgb, var(--glass-surface-strong) 86%, transparent);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .18);
}

.history-select__custom input:focus,
.category-custom-input input:focus,
.bank-search input:focus,
.item-custom-title input:focus {
  border-color: color-mix(in srgb, var(--blue) 62%, transparent);
  background: var(--glass-surface-strong);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--blue) 15%, transparent), var(--glass-highlight);
}

.calendar-heading button,
.calendar-today,
.history-export-heading > button,
.history-export-presets button,
.split-expense-pagination button {
  border-color: var(--glass-border-subtle);
  background: var(--glass-surface-soft);
  box-shadow: var(--glass-highlight), var(--glass-shadow-sm);
}

.day-picker,
.transaction-type-toggle,
.split-burden-toggle {
  border-color: var(--glass-border-subtle);
  background: var(--glass-surface-soft);
  box-shadow: var(--glass-highlight);
}

.bank-options button:hover,
.bank-options button[aria-selected="true"],
.day-picker button:hover,
.history-select__options button:hover,
.history-select__options button[aria-selected="true"],
.category-options button:hover,
.category-options button[aria-selected="true"],
.member-picker__panel button:hover,
.member-picker__panel button[aria-selected="true"] {
  color: var(--blue);
  border-color: color-mix(in srgb, var(--blue) 28%, transparent);
  background: color-mix(in srgb, var(--blue) 12%, var(--glass-surface-soft));
}

.history-export-button:hover,
.history-export-heading > button:hover,
.history-export-presets button:hover,
.history-export-presets button.is-selected,
.history-select__trigger[aria-expanded="true"],
.split-compact-form input:focus,
.split-amount-input input:focus,
.analysis-link:hover {
  color: var(--blue);
  border-color: color-mix(in srgb, var(--blue) 62%, transparent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--blue) 14%, transparent), var(--glass-highlight);
}

.history-export-presets button.is-selected,
.transaction-type-toggle input:checked + span,
.split-type-options input:checked + span,
.navigation-choice-list input:checked + span,
.item-suggestions input:checked + span {
  color: var(--blue);
  border-color: color-mix(in srgb, var(--blue) 48%, var(--glass-border));
  background: color-mix(in srgb, var(--blue) 13%, var(--glass-surface-strong));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--blue) 18%, transparent), 0 0 0 3px color-mix(in srgb, var(--blue) 11%, transparent);
}

.module-nav a.is-active,
.day-picker button[aria-pressed="true"],
.calendar-days button[aria-pressed="true"],
.split-burden-toggle button.is-selected,
.mobile-table-view-toggle button.is-selected,
.split-expense-pagination button.is-active {
  color: #fff;
  border-color: rgba(255, 255, 255, .2);
  background: linear-gradient(145deg, var(--blue), var(--blue-dark));
  box-shadow: var(--glass-highlight), 0 12px 28px color-mix(in srgb, var(--blue) 30%, transparent);
}

.switch-row input:checked + .switch {
  background: linear-gradient(145deg, var(--blue), var(--blue-dark));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--blue) 24%, transparent), 0 0 0 3px color-mix(in srgb, var(--blue) 10%, transparent);
}

.switch-row input:focus-visible + .switch { outline-color: var(--blue); }

.split-type-options input:checked + span i,
.split-participant-list article > label:first-child input:checked + .split-check,
.split-accounting-sync > input:checked + .split-check,
.navigation-toggle > input:checked + .split-check,
.navigation-pin-list input:checked + .split-check,
.item-suggestions input:checked + span::before {
  color: #fff;
  border-color: var(--blue);
  background: var(--blue);
  box-shadow: var(--glass-highlight);
}

.split-group-card__main > b,
.split-invite-card strong,
.split-member-list article div > strong small,
.split-payment-summary p b,
.split-settlement-list > article > strong,
.split-settlement-progress article > div:first-child strong,
.split-expense-row > b,
.split-participant-note strong,
.navigation-pin-count.is-limit,
.split-amount-input b {
  color: var(--blue);
}

.notification-icon,
.split-group-card__icon,
.split-avatar,
.split-entry-heading > span,
.app-navigation__avatar,
.app-navigation__pinned a > span,
.settings-section-heading > span,
.navigation-settings-heading > span,
.push-device-status__icon {
  color: var(--blue);
  background: color-mix(in srgb, var(--blue) 13%, var(--glass-surface-strong));
  box-shadow: var(--glass-highlight);
}

.overview-item--needs.is-selected,
.status-section--needs_payment .section-kicker,
.status-section--needs_payment .status-section__header h2 span {
  color: var(--red);
}

.overview-item--needs .overview-item__icon,
.status-section--needs_payment .status-section__header h2 span {
  background: color-mix(in srgb, var(--red-bg) 72%, var(--glass-surface-strong));
  box-shadow: var(--glass-highlight);
}

.overview-item--needs .overview-item__icon { color: var(--red); }

.wallet-card--needs_payment {
  --status-color: var(--red);
  --status-soft: color-mix(in srgb, var(--red-bg) 72%, var(--glass-surface-soft));
  border-color: color-mix(in srgb, var(--red) 30%, var(--glass-border));
  box-shadow: var(--glass-highlight), var(--glass-shadow-md);
}

.detail-panel--needs_payment { --detail-color: var(--red); }

.detail-panel--needs_payment .detail-due {
  background: linear-gradient(145deg, color-mix(in srgb, var(--red) 76%, var(--navy)), color-mix(in srgb, var(--red) 48%, var(--navy)));
  box-shadow: var(--glass-highlight), 0 18px 42px color-mix(in srgb, var(--red) 22%, transparent);
}

.payment-action,
html[data-theme="dark"] .payment-action {
  color: #fff;
  border-color: color-mix(in srgb, var(--status-color) 58%, var(--glass-border));
  background: color-mix(in srgb, var(--status-color) 68%, var(--navy));
  box-shadow: var(--glass-highlight), 0 12px 28px color-mix(in srgb, var(--status-color) 26%, transparent);
}

.split-group-card:hover,
.split-invite-card,
.split-amount-input input {
  border-color: color-mix(in srgb, var(--blue) 32%, var(--glass-border));
}

.split-invite-card,
.split-settlement-list article,
.split-pending-badge,
.split-source-badge,
.app-navigation__action--split,
.analysis-link {
  color: var(--blue);
  background: color-mix(in srgb, var(--blue) 10%, var(--glass-surface-soft));
}

.app-navigation__action--split,
.analysis-link { border-color: color-mix(in srgb, var(--blue) 30%, var(--glass-border)); }

.split-group-card:nth-child(4n + 4) .split-group-card__icon {
  color: var(--blue);
  background: color-mix(in srgb, var(--blue) 13%, var(--glass-surface-strong));
}

.split-ratio-notice {
  background: color-mix(in srgb, var(--red-bg) 28%, var(--glass-surface-soft));
  box-shadow: var(--glass-highlight), var(--glass-shadow-sm);
}

.split-ratio-notice.is-valid { background: color-mix(in srgb, var(--green-bg) 28%, var(--glass-surface-soft)); }

.app-navigation__action--split > i,
.app-navigation__links a.is-active i {
  color: #fff;
  background: var(--blue);
}

.transaction-action-button {
  border-color: var(--glass-border-subtle) !important;
  background: var(--glass-surface-strong) !important;
  box-shadow: var(--glass-highlight), var(--glass-shadow-sm);
}

.transaction-action-button--danger {
  color: var(--red) !important;
  border-color: color-mix(in srgb, var(--red) 38%, var(--glass-border)) !important;
  background: color-mix(in srgb, var(--red-bg) 72%, var(--glass-surface-strong)) !important;
}

.split-header-table + .button-primary,
.split-header-table + .button-primary:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, .2);
  background: linear-gradient(145deg, #4287e4, #2161b4);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .34), 0 12px 28px rgba(38, 103, 190, .3);
}

.split-header-table {
  color: #fff;
  border-color: color-mix(in srgb, #4287e4 34%, var(--glass-border));
  background: linear-gradient(145deg, color-mix(in srgb, #4287e4 58%, var(--navy)), color-mix(in srgb, #2161b4 52%, var(--navy)));
  box-shadow: var(--glass-highlight), 0 10px 24px color-mix(in srgb, var(--navy) 30%, transparent);
}

.split-header-table:hover,
.split-header-table:active,
.split-header-table.is-active,
.split-header-table[aria-current="page"] {
  color: #fff;
  border-color: color-mix(in srgb, #4287e4 48%, var(--glass-border));
  background: linear-gradient(145deg, color-mix(in srgb, #4287e4 66%, var(--navy)), color-mix(in srgb, #2161b4 60%, var(--navy)));
}

.page-action-loading--text::after { display: none; }

.skeleton,
[data-skeleton] {
  position: relative;
  overflow: hidden;
  color: transparent;
  border: 1px solid var(--glass-border-subtle);
  background: var(--glass-surface-soft);
  box-shadow: var(--glass-highlight);
}

.skeleton::after,
[data-skeleton]::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 42%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .18), transparent);
  animation: glassShimmer 1.15s ease-in-out infinite;
}

[data-tooltip] { position: relative; }
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  z-index: 80;
  right: 0;
  bottom: calc(100% + 8px);
  max-width: min(260px, 80vw);
  padding: 8px 10px;
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  color: var(--ink);
  background: var(--glass-surface-strong);
  box-shadow: var(--glass-highlight), var(--glass-shadow-float);
  opacity: 0;
  transform: translate3d(0, 4px, 0) scale(.98);
  transition: opacity var(--duration-fast) ease, transform var(--duration-fast) var(--spring-soft);
  pointer-events: none;
}

[data-tooltip]:hover::after,
[data-tooltip]:focus-visible::after { opacity: 1; transform: translate3d(0, 0, 0) scale(1); }

html[data-theme="dark"] .overview-guide,
html[data-theme="dark"] .status-empty,
html[data-theme="dark"] .empty-state,
html[data-theme="dark"] .history-period,
html[data-theme="dark"] .history-alerts,
html[data-theme="dark"] .split-expense-filters,
html[data-theme="dark"] .item-suggestion-shell,
html[data-theme="dark"] .split-accounting-sync,
html[data-theme="dark"] .navigation-settings-empty,
html[data-theme="dark"] .mobile-table-view-toggle {
  color: var(--ink);
  border-color: var(--glass-border);
  background: var(--glass-surface-soft);
  box-shadow: var(--glass-highlight), var(--glass-shadow-sm);
}

html[data-theme="dark"] .history-select__custom input,
html[data-theme="dark"] .category-custom-input input,
html[data-theme="dark"] .bank-search input,
html[data-theme="dark"] .item-custom-title input,
html[data-theme="dark"] .calendar-heading button,
html[data-theme="dark"] .calendar-today,
html[data-theme="dark"] .history-export-presets button,
html[data-theme="dark"] .item-suggestions span {
  color: var(--ink);
  border-color: var(--glass-border-subtle);
  background: color-mix(in srgb, var(--glass-surface-strong) 86%, transparent);
}

html[data-theme="dark"] .module-nav a.is-active,
html[data-theme="dark"] .day-picker button[aria-pressed="true"],
html[data-theme="dark"] .calendar-days button[aria-pressed="true"],
html[data-theme="dark"] .split-burden-toggle button.is-selected,
html[data-theme="dark"] .mobile-table-view-toggle button.is-selected,
html[data-theme="dark"] .split-expense-pagination button.is-active {
  color: #fff;
  border-color: rgba(255, 255, 255, .2);
  background: linear-gradient(145deg, var(--blue), var(--blue-dark));
  box-shadow: var(--glass-highlight), 0 12px 28px color-mix(in srgb, var(--blue) 30%, transparent);
}

html[data-theme="dark"] .switch-row input:checked + .switch { background: linear-gradient(145deg, var(--blue), var(--blue-dark)); }

html[data-theme="dark"] .history-export-presets button.is-selected,
html[data-theme="dark"] .transaction-type-toggle input:checked + span,
html[data-theme="dark"] .split-type-options input:checked + span,
html[data-theme="dark"] .navigation-choice-list input:checked + span,
html[data-theme="dark"] .item-suggestions input:checked + span,
html[data-theme="dark"] .member-picker__panel button:hover,
html[data-theme="dark"] .member-picker__panel button[aria-selected="true"] {
  color: var(--blue);
  border-color: color-mix(in srgb, var(--blue) 48%, var(--glass-border));
  background: color-mix(in srgb, var(--blue) 13%, var(--glass-surface-strong));
}

html[data-theme="dark"] .split-type-options input:checked + span i,
html[data-theme="dark"] .split-participant-list article > label:first-child input:checked + .split-check,
html[data-theme="dark"] .split-accounting-sync > input:checked + .split-check,
html[data-theme="dark"] .navigation-toggle > input:checked + .split-check,
html[data-theme="dark"] .navigation-pin-list input:checked + .split-check,
html[data-theme="dark"] .app-navigation__action > i,
html[data-theme="dark"] .app-navigation__links a.is-active i {
  color: #fff;
  border-color: var(--blue);
  background: var(--blue);
}

html[data-theme="dark"] .mobile-table-view-toggle button:not(.is-selected) { color: var(--muted); background: transparent; }
html[data-theme="dark"] .setup-note { color: var(--blue-dark); background: color-mix(in srgb, var(--blue) 9%, var(--glass-surface-soft)); }
html[data-theme="dark"] .overview-item--needs small { color: var(--muted); }

html[data-theme="dark"] {
  --loading-accent: var(--blue);
  --loading-highlight: var(--blue-dark);
}

html[data-theme="dark"] .theme-toggle {
  color: var(--blue);
  border-color: var(--glass-border);
  background: var(--glass-surface-strong);
  box-shadow: var(--glass-highlight), var(--glass-shadow-sm);
}

html[data-theme="dark"] .month-switcher a {
  color: var(--ink);
  border-color: var(--glass-border-subtle);
  background: var(--glass-surface-strong);
  box-shadow: var(--glass-highlight), var(--glass-shadow-sm);
}

html[data-theme="dark"] .button-primary:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, .2);
  background: linear-gradient(145deg, #4287e4, #2161b4);
}

html[data-theme="dark"] .bank-options button:hover,
html[data-theme="dark"] .bank-options button[aria-selected="true"],
html[data-theme="dark"] .day-picker button:hover,
html[data-theme="dark"] .calendar-days button:hover,
html[data-theme="dark"] .analysis-link:hover {
  color: var(--blue);
  border-color: color-mix(in srgb, var(--blue) 32%, var(--glass-border));
  background: color-mix(in srgb, var(--blue) 12%, var(--glass-surface-soft));
  box-shadow: var(--glass-highlight);
}

html[data-theme="dark"] .button-ghost,
html[data-theme="dark"] .secondary-actions a,
html[data-theme="dark"] .secondary-actions button,
html[data-theme="dark"] .transaction-action-button {
  color: var(--ink);
  border-color: var(--glass-border-subtle) !important;
  background: var(--glass-surface-strong) !important;
  box-shadow: var(--glass-highlight), var(--glass-shadow-sm);
}

html[data-theme="dark"] .transaction-action-button--danger {
  color: var(--red) !important;
  border-color: color-mix(in srgb, var(--red) 38%, var(--glass-border)) !important;
  background: color-mix(in srgb, var(--red-bg) 72%, var(--glass-surface-strong)) !important;
}

html[data-theme="dark"] .card-thumbnail,
html[data-theme="dark"] .date-facts,
html[data-theme="dark"] .transaction-type-toggle,
html[data-theme="dark"] .split-entry-hero .transaction-date-picker__trigger,
html[data-theme="dark"] .split-type-options i,
html[data-theme="dark"] .split-check,
html[data-theme="dark"] .split-type-options label > span,
html[data-theme="dark"] .split-participant-list article {
  color: var(--ink);
  border-color: var(--glass-border-subtle);
  background: var(--glass-surface-strong);
  box-shadow: var(--glass-highlight), var(--glass-shadow-sm);
}

html[data-theme="dark"] .switch {
  background: color-mix(in srgb, var(--glass-surface-strong) 86%, var(--muted));
  box-shadow: inset 0 0 0 1px var(--glass-border-subtle);
}

html[data-theme="dark"] .switch::after { background: var(--ink); }
html[data-theme="dark"] .switch-row input:checked + .switch {
  background: linear-gradient(145deg, var(--blue), var(--blue-dark));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--blue) 24%, transparent), 0 0 0 3px color-mix(in srgb, var(--blue) 10%, transparent);
}
html[data-theme="dark"] .switch-row input:checked + .switch::after { background: #fff; }
html[data-theme="dark"] .switch-row input:focus-visible + .switch { outline-color: var(--blue); }

html[data-theme="dark"] .split-header-table + .button-primary,
html[data-theme="dark"] .split-header-table + .button-primary:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, .2);
  background: linear-gradient(145deg, #4287e4, #2161b4);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .34), 0 12px 28px rgba(38, 103, 190, .3);
}

html[data-theme="dark"] .split-header-table {
  color: #fff;
  border-color: color-mix(in srgb, #4287e4 34%, var(--glass-border));
  background: linear-gradient(145deg, color-mix(in srgb, #4287e4 58%, var(--navy)), color-mix(in srgb, #2161b4 52%, var(--navy)));
  box-shadow: var(--glass-highlight), 0 10px 24px color-mix(in srgb, var(--navy) 30%, transparent);
}

html[data-theme="dark"] .split-header-table:hover,
html[data-theme="dark"] .split-header-table:active,
html[data-theme="dark"] .split-header-table.is-active,
html[data-theme="dark"] .split-header-table[aria-current="page"] {
  color: #fff;
  border-color: color-mix(in srgb, #4287e4 48%, var(--glass-border));
  background: linear-gradient(145deg, color-mix(in srgb, #4287e4 66%, var(--navy)), color-mix(in srgb, #2161b4 60%, var(--navy)));
}

html[data-theme="dark"] .overview-item--needs {
  color: var(--ink);
  border-color: color-mix(in srgb, var(--red) 24%, var(--glass-border));
  border-left-color: var(--red);
  background: color-mix(in srgb, var(--red-bg) 24%, var(--glass-surface));
}

html[data-theme="dark"] .overview-item--needs.is-selected { color: var(--red); }
html[data-theme="dark"] .overview-item--needs small { color: var(--muted); }
html[data-theme="dark"] .status-section--needs_payment .status-section__header h2 span {
  color: var(--red);
  background: color-mix(in srgb, var(--red-bg) 72%, var(--glass-surface-strong));
}

html[data-theme="dark"] .wallet-card--needs_payment {
  --status-color: var(--red);
  --status-soft: color-mix(in srgb, var(--red-bg) 72%, var(--glass-surface-soft));
  border-color: color-mix(in srgb, var(--red) 30%, var(--glass-border));
}

html[data-theme="dark"] .history-alert-list span,
html[data-theme="dark"] .category-change {
  border-color: var(--glass-border-subtle);
  background: color-mix(in srgb, var(--glass-surface-strong) 72%, transparent);
  box-shadow: var(--glass-highlight);
}

html[data-theme="dark"] .split-ratio-notice { background: color-mix(in srgb, var(--red-bg) 28%, var(--glass-surface-soft)); }
html[data-theme="dark"] .split-ratio-notice.is-valid { background: color-mix(in srgb, var(--green-bg) 28%, var(--glass-surface-soft)); }
html[data-theme="dark"] .split-amount-input input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px color-mix(in srgb, var(--blue) 14%, transparent); }
html[data-theme="dark"] .mobile-table-view-toggle button:hover:not(.is-selected) { color: var(--blue); background: color-mix(in srgb, var(--blue) 10%, transparent); }

html[data-theme="dark"] .analysis-link,
html[data-theme="dark"] .analysis-link span,
html[data-theme="dark"] .settings-section-heading > span,
html[data-theme="dark"] .push-device-status__icon {
  color: var(--blue);
  border-color: color-mix(in srgb, var(--blue) 30%, var(--glass-border));
  background: color-mix(in srgb, var(--blue) 13%, var(--glass-surface-strong));
}

@supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .overview-guide,
  .status-empty,
  .empty-state,
  .history-period,
  .history-alerts,
  .split-expense-filters,
  .item-suggestion-shell,
  .split-accounting-sync,
  .navigation-settings-empty,
  .mobile-table-view-toggle,
  .skeleton,
  [data-skeleton],
  [data-tooltip]::after {
    -webkit-backdrop-filter: saturate(125%) blur(var(--glass-blur-sm));
    backdrop-filter: saturate(125%) blur(var(--glass-blur-sm));
  }
}

/* Motion system: transform/opacity only. Filters add focus without changing layout. */
:root {
  --motion-touch: 120ms;
  --motion-fast: 190ms;
  --motion-control: 240ms;
  --motion-content: 280ms;
  --motion-page: 330ms;
  --motion-ease-out: cubic-bezier(.16, 1, .3, 1);
  --motion-spring: cubic-bezier(.18, .9, .24, 1.12);
  --motion-spring-soft: cubic-bezier(.22, .82, .24, 1);
}

@view-transition {
  navigation: auto;
}

@keyframes glassPageIn {
  from { opacity: 0; filter: blur(10px); transform: translate3d(0, 10px, 0) scale(.992); }
  72% { opacity: 1; filter: blur(.8px); transform: translate3d(0, 0, 0) scale(1.002); }
  to { opacity: 1; filter: blur(0); transform: translate3d(0, 0, 0) scale(1); }
}

@keyframes glassPageCrossFadeOut {
  from { opacity: 1; filter: blur(0); transform: translate3d(0, 0, 0) scale(1); }
  to { opacity: 0; filter: blur(3px); transform: translate3d(0, 0, 0) scale(.995); }
}

@keyframes glassPageCrossFadeIn {
  from { opacity: 0; filter: blur(3px); transform: translate3d(0, 0, 0) scale(1.005); }
  to { opacity: 1; filter: blur(0); transform: translate3d(0, 0, 0) scale(1); }
}

@keyframes glassTopbarIn {
  from { opacity: 0; filter: blur(7px); transform: translate3d(0, -7px, 0) scale(.99); }
  to { opacity: 1; filter: blur(0); transform: translate3d(0, 0, 0) scale(1); }
}

@keyframes glassItemIn {
  from { opacity: 0; filter: blur(5px); transform: translate3d(0, 10px, 0) scale(.985); }
  to { opacity: 1; filter: blur(0); transform: translate3d(0, 0, 0) scale(1); }
}

@keyframes glassPopoverIn {
  from { opacity: 0; filter: blur(7px); transform: translate3d(0, -6px, 0) scale(.965); }
  76% { opacity: 1; filter: blur(.6px); transform: translate3d(0, 1px, 0) scale(1.006); }
  to { opacity: 1; filter: blur(0); transform: translate3d(0, 0, 0) scale(1); }
}

@keyframes glassDialogIn {
  0% { opacity: 0; filter: blur(10px); transform: translate3d(0, 12px, 0) scale(.96); }
  72% { opacity: 1; filter: blur(.8px); transform: translate3d(0, 0, 0) scale(1.01); }
  100% { opacity: 1; filter: blur(0); transform: translate3d(0, 0, 0) scale(1); }
}

@keyframes glassToastIn {
  0% { opacity: 0; filter: blur(8px); transform: translate3d(18px, -8px, 0) scale(.96); }
  72% { opacity: 1; filter: blur(.6px); transform: translate3d(-1px, 1px, 0) scale(1.008); }
  100% { opacity: 1; filter: blur(0); transform: translate3d(0, 0, 0) scale(1); }
}

@keyframes glassShimmer {
  from { transform: translate3d(-120%, 0, 0); }
  to { transform: translate3d(220%, 0, 0); }
}

@keyframes glassBarRise {
  from { opacity: .35; transform: scaleY(.04); }
  to { opacity: 1; transform: scaleY(1); }
}

@keyframes glassControlSpring {
  0% { transform: scale(.86); }
  68% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

@keyframes glassSwitchSpring {
  0% { transform: translate3d(20px, 0, 0) scale(.86); }
  68% { transform: translate3d(20px, 0, 0) scale(1.08); }
  100% { transform: translate3d(20px, 0, 0) scale(1); }
}

@keyframes glassPressRelease {
  0% { filter: brightness(.98); transform: translate3d(0, 1px, 0) scale(.97); }
  68% { filter: brightness(1.018); transform: translate3d(0, -1px, 0) scale(1.008); }
  100% { filter: brightness(1); transform: translate3d(0, 0, 0) scale(1); }
}

@keyframes glassAccordionIn {
  from { opacity: 0; filter: blur(5px); clip-path: inset(0 0 100% 0 round 12px); transform: translate3d(0, -6px, 0) scaleY(.94); }
  to { opacity: 1; filter: blur(0); clip-path: inset(0 0 0 0 round 12px); transform: translate3d(0, 0, 0) scaleY(1); }
}

html.has-liquid-motion:not(.is-crossfade-navigation) .topbar {
  animation: glassTopbarIn 300ms var(--motion-ease-out) backwards;
  transition: background var(--motion-content) ease, box-shadow var(--motion-content) ease, transform var(--motion-content) var(--motion-spring-soft), -webkit-backdrop-filter var(--motion-content) ease, backdrop-filter var(--motion-content) ease;
}
html.has-liquid-motion:not(.is-crossfade-navigation) .container {
  transform-origin: 50% 12%;
  animation: glassPageIn var(--motion-page) var(--motion-ease-out) backwards;
}
html.has-liquid-motion .container > :not(.motion-item) { animation: none; }

.topbar { view-transition-name: app-topbar; }
.app-navigation { view-transition-name: app-sidebar; }
.container { view-transition-name: app-main-content; }

::view-transition-old(root) { opacity: 0; animation: none; }
::view-transition-new(root) { opacity: 1; animation: none; }
::view-transition-group(app-topbar),
::view-transition-group(app-sidebar),
::view-transition-old(app-topbar),
::view-transition-new(app-topbar),
::view-transition-old(app-sidebar),
::view-transition-new(app-sidebar) {
  opacity: 1;
  animation: none;
  mix-blend-mode: normal;
}
::view-transition-group(app-main-content) { animation: none; }
::view-transition-image-pair(app-main-content) { isolation: auto; }
::view-transition-old(app-main-content),
::view-transition-new(app-main-content) {
  transform-origin: 50% 12%;
  mix-blend-mode: normal;
  backface-visibility: hidden;
}
::view-transition-old(app-main-content) {
  animation: glassPageCrossFadeOut 280ms cubic-bezier(.22, 1, .36, 1) both;
}
::view-transition-new(app-main-content) {
  animation: glassPageCrossFadeIn 280ms cubic-bezier(.22, 1, .36, 1) both;
}

html.is-crossfade-navigation .motion-item,
html.is-crossfade-navigation .motion-item.is-glass-visible {
  opacity: 1;
  filter: none;
  transform: none;
  animation: none;
}

.motion-item { animation: none; opacity: 0; transform: translate3d(0, 16px, 0) scale(.975); }
.motion-item.is-glass-visible {
  animation: glassItemIn 260ms var(--motion-spring-soft) both;
  animation-delay: calc(var(--motion-index, 0) * 8ms);
}
.motion-item:not(.is-glass-visible),
.app-navigation { will-change: transform, opacity; }
.spending-period-bar > i {
  transform-origin: 50% 100%;
  animation: glassBarRise 250ms calc(var(--motion-index, 0) * 7ms) var(--motion-ease-out) backwards;
  transition: transform var(--duration-fast) ease, filter var(--duration-fast) ease, box-shadow var(--duration-fast) ease;
}
.flash { animation-duration: var(--motion-page); }
.split-burden-view { animation-duration: var(--motion-content); }
.split-pie-stage.is-soft-fading .split-pie { animation-duration: 320ms; }
.split-pie-stage.is-soft-fading .split-pie-labels button { animation-duration: 240ms; animation-delay: 0ms; }

.button,
.payment-action,
.transaction-action-button,
.secondary-actions a,
.secondary-actions button,
.navigation-menu-button,
.theme-toggle,
.app-navigation a,
.split-group-card__main,
.overview-item,
.wallet-card__main-link,
.credit-card,
.history-kpi,
.split-group-card {
  transition-duration: var(--motion-control);
  transition-timing-function: var(--motion-spring-soft);
}

.is-liquid-pressing { transform: translate3d(0, 1px, 0) scale(.97) !important; transition-duration: var(--motion-touch) !important; }
.is-liquid-releasing { animation: glassPressRelease var(--motion-content) var(--motion-spring) both !important; }
.is-liquid-segment-target { will-change: transform, filter; }
.is-liquid-row-moving { will-change: transform, opacity, filter; }

.field input,
.field select,
.field textarea,
.split-compact-form input,
.bank-picker__trigger,
.day-select__trigger,
.history-select__trigger,
.category-picker__trigger,
.transaction-date-picker__trigger,
.member-picker__trigger,
.split-value input,
.split-amount-input input {
  transition-duration: var(--motion-control);
  transition-timing-function: var(--motion-spring-soft);
}

.switch-row input:checked + .switch::after { animation: glassSwitchSpring var(--motion-content) var(--motion-spring) backwards; }
.transaction-type-toggle input:checked + span,
.navigation-toggle > input:checked + .split-check,
.split-type-options input:checked + span,
.split-participant-list input:checked + .split-check { animation: glassControlSpring var(--motion-content) var(--motion-spring) backwards; }

.bank-picker__panel:not([hidden]),
.day-select__panel:not([hidden]),
.history-select__panel:not([hidden]),
.category-picker__panel:not([hidden]),
.transaction-date-picker__panel:not([hidden]),
.member-picker__panel:not([hidden]),
.history-export-panel { animation-duration: var(--motion-page); }

details[open] > :not(summary) {
  transform-origin: 50% 0;
  animation: glassAccordionIn var(--motion-content) var(--motion-ease-out) backwards;
}

.category-progress > span { transform-origin: 0 50%; }

[data-tooltip]::after {
  filter: blur(5px);
  transition: opacity var(--motion-fast) ease, transform var(--motion-control) var(--motion-spring-soft), filter var(--motion-fast) ease;
}
[data-tooltip]:hover::after,
[data-tooltip]:focus-visible::after { filter: blur(0); }

@supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .topbar.is-scrolled {
    -webkit-backdrop-filter: saturate(var(--glass-saturation)) blur(calc(var(--glass-blur-lg) + 6px));
    backdrop-filter: saturate(var(--glass-saturation)) blur(calc(var(--glass-blur-lg) + 6px));
  }
}

.page-action-loading { overflow: hidden; }
.page-action-loading::after {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 0;
  width: 42%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .18), transparent);
  animation: glassShimmer 1.15s ease-in-out infinite;
  pointer-events: none;
}

@supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .topbar,
  .page-progress,
  .app-navigation,
  .module-nav,
  .bank-picker__panel,
  .day-select__panel,
  .history-select__panel,
  .category-picker__panel,
  .transaction-date-picker__panel,
  .member-picker__panel,
  .history-export-panel,
  .split-submit-bar,
  .navigation-settings-submit,
  .flash {
    -webkit-backdrop-filter: saturate(var(--glass-saturation)) blur(var(--glass-blur-lg));
    backdrop-filter: saturate(var(--glass-saturation)) blur(var(--glass-blur-lg));
  }

  .overview-item,
  .wallet-card,
  .credit-card,
  .detail-panel,
  .card-form,
  .money-summary,
  .transaction-section,
  .category-panel,
  .history-panel,
  .history-kpi,
  .split-panel,
  .split-entry-card,
  .navigation-settings-card {
    -webkit-backdrop-filter: saturate(125%) blur(var(--glass-blur-sm));
    backdrop-filter: saturate(125%) blur(var(--glass-blur-sm));
  }

  .navigation-overlay,
  .history-export-backdrop {
    -webkit-backdrop-filter: blur(var(--glass-blur-xs));
    backdrop-filter: blur(var(--glass-blur-xs));
  }
}

@media (hover: hover) and (pointer: fine) {
  .wallet-card:hover,
  .credit-card:hover,
  .overview-item:hover,
  .history-kpi:hover,
  .split-group-card:hover {
    -webkit-backdrop-filter: saturate(128%) blur(calc(var(--glass-blur-sm) + 1px));
    backdrop-filter: saturate(128%) blur(calc(var(--glass-blur-sm) + 1px));
    filter: brightness(1.018);
    transform: translate3d(0, -4px, 0) scale(1.006);
    border-color: color-mix(in srgb, var(--blue) 28%, var(--glass-border));
    box-shadow: var(--glass-highlight), var(--glass-shadow-float);
  }

  .button:hover,
  .payment-action:hover { transform: translate3d(0, -2px, 0); filter: brightness(1.025); }
}

@media (min-width: 1024px) {
  .app-navigation { border-radius: var(--radius-panel); }
  body.has-navigation .topbar { top: 18px; margin-top: 0; }
}

@media (max-width: 1023px) {
  .topbar {
    top: 0;
    width: calc(100% - 20px);
    min-height: calc(62px + env(safe-area-inset-top));
    margin: 0 10px;
    padding-top: max(10px, env(safe-area-inset-top));
    border-top: 0;
    border-radius: 0 0 22px 22px;
  }

  .navigation-overlay {
    background: rgba(6, 15, 29, .38);
    -webkit-backdrop-filter: saturate(115%) blur(8px);
    backdrop-filter: saturate(115%) blur(8px);
    transition: opacity 280ms cubic-bezier(.22, 1, .36, 1);
  }

  .app-navigation {
    width: min(88vw, 354px);
    padding: max(15px, env(safe-area-inset-top)) 14px max(14px, env(safe-area-inset-bottom));
    border-radius: 0 28px 28px 0;
    background: color-mix(in srgb, var(--glass-surface-strong) 94%, transparent);
    -webkit-backdrop-filter: saturate(148%) blur(var(--glass-blur-lg));
    backdrop-filter: saturate(148%) blur(var(--glass-blur-lg));
    box-shadow: var(--glass-highlight), 20px 0 58px rgba(12, 35, 70, .24);
    opacity: .58;
    transform: translate3d(calc(-100% - 18px), 0, 0) scale(.985);
    transform-origin: 0 50%;
    transition: transform 300ms cubic-bezier(.22, 1, .36, 1), opacity 220ms ease-out;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .app-navigation::-webkit-scrollbar { display: none; }
  .app-navigation.is-open { opacity: 1; transform: translate3d(0, 0, 0) scale(1); }

  .app-navigation__header {
    gap: 12px;
    padding: 4px 3px 14px;
    border-color: color-mix(in srgb, var(--glass-border) 68%, transparent);
  }

  .app-navigation__header > div { gap: 12px; }
  .app-navigation__header > div > span:last-child { gap: 2px; }
  .app-navigation__header strong { font-size: 15px; letter-spacing: -.01em; }
  .app-navigation__header small { max-width: 210px; color: color-mix(in srgb, var(--muted) 88%, transparent); font-size: 12px; }

  .app-navigation__avatar {
    width: 42px;
    height: 42px;
    flex-basis: 42px;
    border: 1px solid color-mix(in srgb, var(--blue) 22%, var(--glass-border));
    border-radius: 15px;
    color: color-mix(in srgb, var(--blue) 86%, var(--ink));
    background: color-mix(in srgb, var(--blue) 11%, var(--glass-surface-soft));
    box-shadow: var(--glass-highlight), 0 8px 20px color-mix(in srgb, var(--blue) 10%, transparent);
  }

  .app-navigation__header > button {
    width: var(--touch-target);
    height: var(--touch-target);
    border: 1px solid var(--glass-border-subtle);
    border-radius: 50%;
    color: var(--muted);
    background: var(--glass-surface-soft);
    box-shadow: var(--glass-highlight);
    font-size: 23px;
    -webkit-tap-highlight-color: transparent;
  }

  .app-navigation__quick {
    gap: 8px;
    padding: 12px 0;
    border-color: color-mix(in srgb, var(--glass-border) 62%, transparent);
  }

  .app-navigation__action,
  .app-navigation__action--split {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
    min-height: 52px;
    padding: 7px 10px;
    border: 1px solid color-mix(in srgb, var(--blue) 18%, var(--glass-border));
    border-radius: 16px;
    color: var(--ink);
    background: color-mix(in srgb, var(--blue) 7%, var(--glass-surface-soft));
    box-shadow: var(--glass-highlight), 0 8px 22px rgba(16, 44, 82, .08);
    -webkit-backdrop-filter: saturate(130%) blur(var(--glass-blur-sm));
    backdrop-filter: saturate(130%) blur(var(--glass-blur-sm));
  }

  .app-navigation__action--split {
    border-color: color-mix(in srgb, var(--blue-dark) 16%, var(--glass-border));
    background: color-mix(in srgb, var(--blue-dark) 5%, var(--glass-surface-soft));
  }

  .app-navigation__action > i,
  .app-navigation__action--split > i,
  html[data-theme="dark"] .app-navigation__action > i,
  html[data-theme="dark"] .app-navigation__action--split > i {
    width: 34px;
    height: 34px;
    border: 1px solid color-mix(in srgb, var(--blue) 24%, var(--glass-border));
    border-radius: 12px;
    color: color-mix(in srgb, #fff 90%, var(--blue));
    background: color-mix(in srgb, var(--blue) 48%, var(--glass-surface-strong));
    box-shadow: var(--glass-highlight), 0 7px 16px color-mix(in srgb, var(--blue) 14%, transparent);
    font-size: 19px;
  }

  .app-navigation__action strong { font-size: 14px; }
  .app-navigation__action small { color: color-mix(in srgb, var(--muted) 90%, transparent); font-size: 11px; }

  .app-navigation__links {
    position: relative;
    isolation: isolate;
    gap: 3px;
    padding: 10px 0;
  }

  .app-navigation__selection {
    position: absolute;
    z-index: 0;
    top: 0;
    right: 0;
    left: 0;
    display: block;
    height: var(--touch-target);
    border: 1px solid color-mix(in srgb, var(--blue) 25%, var(--glass-border));
    border-radius: 15px;
    background: linear-gradient(135deg, color-mix(in srgb, var(--blue) 15%, var(--glass-surface-strong)), color-mix(in srgb, var(--blue) 7%, var(--glass-surface-soft)));
    box-shadow: var(--glass-highlight), 0 10px 28px color-mix(in srgb, var(--blue) 13%, transparent), inset 0 0 0 1px color-mix(in srgb, var(--blue) 7%, transparent);
    opacity: 0;
    pointer-events: none;
    transform: translate3d(0, var(--navigation-selection-y, 0), 0) scale3d(1, 1, 1);
    transform-origin: center;
    transition: transform 150ms cubic-bezier(.22, 1, .36, 1), opacity 160ms ease-out, filter 150ms ease-out;
    -webkit-backdrop-filter: saturate(145%) blur(var(--glass-blur-sm));
    backdrop-filter: saturate(145%) blur(var(--glass-blur-sm));
    will-change: transform, opacity, filter;
  }

  .app-navigation__links.has-liquid-selection .app-navigation__selection { opacity: 1; }
  .app-navigation__links.is-positioning-selection .app-navigation__selection { transition: none; }
  .app-navigation__selection.is-travelling {
    filter: brightness(1.035);
    transform: translate3d(0, var(--navigation-selection-y, 0), 0) scale3d(1.012, 1.075, 1);
    transition-duration: 240ms;
  }

  .app-navigation__links a {
    position: relative;
    z-index: 1;
    grid-template-columns: 31px minmax(0, 1fr);
    gap: 10px;
    min-height: var(--touch-target);
    padding: 4px 7px;
    border-radius: 14px;
    color: color-mix(in srgb, var(--muted) 94%, transparent);
    background: transparent;
    box-shadow: none;
    font-size: 15px;
    letter-spacing: -.01em;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
  }

  .app-navigation__links.has-liquid-selection a.is-active,
  html[data-theme="dark"] .app-navigation__links.has-liquid-selection a.is-active {
    background: transparent;
    box-shadow: none;
  }

  .app-navigation__links a.is-active { color: var(--ink); }
  .app-navigation__links i {
    width: 29px;
    height: 29px;
    border: 1px solid color-mix(in srgb, var(--glass-border-subtle) 78%, transparent);
    border-radius: 10px;
    color: color-mix(in srgb, var(--muted) 82%, transparent);
    background: color-mix(in srgb, var(--glass-surface-soft) 72%, transparent);
    box-shadow: var(--glass-highlight);
    font-size: 11px;
    transition: color 180ms ease-out, border-color 180ms ease-out, background 180ms ease-out, transform 220ms var(--spring-soft);
  }

  .app-navigation__links a.is-active i,
  html[data-theme="dark"] .app-navigation__links a.is-active i {
    color: color-mix(in srgb, #fff 92%, var(--blue));
    border-color: color-mix(in srgb, var(--blue) 34%, var(--glass-border));
    background: color-mix(in srgb, var(--blue) 42%, var(--glass-surface-strong));
    box-shadow: var(--glass-highlight), 0 6px 15px color-mix(in srgb, var(--blue) 13%, transparent);
  }

  .app-navigation__pinned {
    padding: 10px 0;
    border-color: color-mix(in srgb, var(--glass-border) 58%, transparent);
  }

  .app-navigation__pinned > p {
    margin: 0 8px 5px;
    color: color-mix(in srgb, var(--muted) 76%, transparent);
    font-size: 10px;
    letter-spacing: .14em;
  }

  .app-navigation__pinned a {
    gap: 9px;
    min-height: 42px;
    padding: 4px 8px;
    color: color-mix(in srgb, var(--ink) 84%, var(--muted));
    background: transparent;
    font-weight: 700;
    -webkit-tap-highlight-color: transparent;
  }

  .app-navigation__pinned a > span {
    width: 27px;
    height: 27px;
    flex-basis: 27px;
    border: 1px solid var(--glass-border-subtle);
    border-radius: 10px;
    color: color-mix(in srgb, var(--blue) 72%, var(--muted));
    background: color-mix(in srgb, var(--blue) 7%, var(--glass-surface-soft));
    box-shadow: var(--glass-highlight);
  }

  .app-navigation__pinned b { font-size: 13px; font-weight: 700; }

  .app-navigation__footer {
    position: sticky;
    z-index: 2;
    bottom: 0;
    gap: 2px;
    margin: auto -2px 0;
    padding: 10px 2px 0;
    border-color: color-mix(in srgb, var(--glass-border) 62%, transparent);
    background: linear-gradient(to bottom, transparent, color-mix(in srgb, var(--glass-surface-strong) 94%, transparent) 24%);
  }

  .app-navigation__footer a,
  .app-navigation__footer button {
    min-height: var(--touch-target);
    padding: 5px 9px;
    border-radius: 13px;
    color: color-mix(in srgb, var(--muted) 92%, transparent);
    background: transparent;
    font-size: 14px;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
  }

  .app-navigation__footer a.is-active {
    color: var(--ink);
    background: color-mix(in srgb, var(--blue) 8%, var(--glass-surface-soft));
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--blue) 15%, var(--glass-border));
  }

  html[data-theme="dark"] .app-navigation {
    border-color: var(--glass-border);
    background: rgba(18, 28, 42, .88);
    box-shadow: var(--glass-highlight), 22px 0 66px rgba(0, 4, 14, .48);
  }

  html[data-theme="dark"] .app-navigation__selection {
    border-color: rgba(130, 177, 238, .2);
    background: linear-gradient(135deg, rgba(78, 130, 198, .22), rgba(46, 84, 134, .15));
    box-shadow: var(--glass-highlight), 0 12px 30px rgba(21, 78, 151, .17), inset 0 0 0 1px rgba(156, 195, 245, .04);
  }

  html[data-theme="dark"] .app-navigation__action,
  html[data-theme="dark"] .app-navigation__action--split {
    border-color: rgba(150, 187, 234, .13);
    background: rgba(55, 83, 119, .17);
  }

  .container { padding-bottom: calc(76px + env(safe-area-inset-bottom)); }
}

@media (max-width: 1023px) and (hover: hover) and (pointer: fine) {
  .app-navigation__links a:not(.is-active):hover,
  .app-navigation__pinned a:hover,
  .app-navigation__footer a:hover,
  .app-navigation__footer button:hover {
    color: var(--ink);
    background: color-mix(in srgb, var(--blue) 5%, var(--glass-surface-soft));
    box-shadow: var(--glass-highlight);
  }

  .app-navigation__action:hover { filter: brightness(1.025); transform: translate3d(0, -1px, 0); }
}

@media (max-width: 1023px) and (max-height: 720px) {
  .app-navigation__quick { gap: 6px; padding: 9px 0; }
  .app-navigation__action, .app-navigation__action--split { min-height: 48px; }
  .app-navigation__action small { display: none; }
  .app-navigation__links { padding: 8px 0; }
  .app-navigation__pinned { padding: 8px 0; }
}

@media (max-width: 620px) {
  :root { --radius-card: 19px; --radius-panel: 22px; }
  .container { padding: 24px 14px calc(70px + env(safe-area-inset-bottom)); }
  h1 { font-size: clamp(31px, 9vw, 40px); }
  h2 { font-size: 23px; }
  .signed-in-user { display: none; }
  .status-overview { gap: 10px; }
  .overview-item { min-height: 78px; padding: 13px; }
  .wallet-card,
  .card-form,
  .credit-card,
  .detail-panel,
  .history-panel,
  .split-panel,
  .split-entry-card,
  .navigation-settings-card { padding: 18px; }
  .button,
  .payment-action,
  .transaction-action-button,
  .secondary-actions a,
  .secondary-actions button { min-height: 46px; }
  .split-submit-bar,
  .navigation-settings-submit { bottom: max(8px, env(safe-area-inset-bottom)); }
  .history-export-modal { padding: max(12px, env(safe-area-inset-top)) 10px max(12px, env(safe-area-inset-bottom)); }
  .history-export-panel { border-radius: 25px; }
  .bank-picker__panel,
  .day-select__panel,
  .history-select__panel,
  .category-picker__panel,
  .transaction-date-picker__panel,
  .member-picker__panel { max-height: min(68vh, 520px); overflow-y: auto; -webkit-overflow-scrolling: touch; }
  .split-sheet-wrap { scroll-snap-type: x proximity; -webkit-overflow-scrolling: touch; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  ::view-transition-old(root),
  ::view-transition-new(root),
  ::view-transition-old(app-main-content),
  ::view-transition-new(app-main-content) { animation: none !important; }
  html.has-liquid-motion .topbar,
  html.has-liquid-motion .container,
  .container > *,
  .motion-item,
  .motion-item.is-glass-visible,
  .flash,
  .history-export-panel,
  .bank-picker__panel:not([hidden]),
  .day-select__panel:not([hidden]),
  .history-select__panel:not([hidden]),
  .category-picker__panel:not([hidden]),
  .transaction-date-picker__panel:not([hidden]),
  .member-picker__panel:not([hidden]),
  .is-liquid-releasing,
  details[open] > :not(summary),
  .switch-row input:checked + .switch::after,
  .transaction-type-toggle input:checked + span,
  .navigation-toggle > input:checked + .split-check,
  .split-type-options input:checked + span,
  .split-participant-list input:checked + .split-check {
    opacity: 1;
    filter: none;
    transform: none;
    animation: none !important;
  }
  .is-liquid-pressing { transform: none !important; }
  .app-navigation,
  .navigation-overlay,
  .app-navigation__selection { transition: none !important; }
  .page-action-loading::after { display: none; }
}

@media (prefers-reduced-transparency: reduce) {
  :root { --glass-surface: #f7f9fd; --glass-surface-strong: #fff; --glass-surface-soft: #f2f6fc; }
  html[data-theme="dark"] { --glass-surface: #1b2635; --glass-surface-strong: #202d3e; --glass-surface-soft: #182331; }
}