/* HexaClass interface style V2 — "Soft Glass"
   Aurora backdrop, frosted cards with generous radii, pill controls,
   periwinkle primary and progress rings. Scoped to [data-style='v2'];
   the Classic style is untouched when the attribute is absent. */

[data-style='v2'] {
  --indigo-600: #5B5BF0;
  --indigo-700: #4B47DE;
  --primary: #5B5BF0;
  --primary-hover: #4B47DE;
  --primary-soft: #EEF0FF;
  --primary-soft-2: #DFE2FF;
  --bg: #F3F5FB;
  --surface-2: #F7F8FC;
  --surface-sunken: #F2F4F9;
  --border: rgba(214, 220, 233, 0.75);
  --glass: rgba(255, 255, 255, 0.72);
  --glass-strong: rgba(255, 255, 255, 0.86);
  --glass-border: rgba(255, 255, 255, 0.9);
  --r-lg: 22px;
  --r-xl: 28px;
  --r-md: 14px;
  --r-sm: 12px;
  --shadow-xs: 0 1px 2px rgba(31, 41, 80, 0.04);
  --shadow-sm: 0 2px 8px -2px rgba(31, 41, 80, 0.08);
  --shadow-md: 0 18px 40px -18px rgba(54, 64, 140, 0.28), 0 2px 6px -2px rgba(31, 41, 80, 0.06);
  --shadow-lg: 0 32px 70px -24px rgba(40, 46, 110, 0.38);
  --brand-gradient: linear-gradient(135deg, #FFFFFF 0%, #F1F0FF 45%, #E6F7F7 100%);
}
[data-style='v2'][data-theme='dark'] {
  --primary: #7C7CFA;
  --primary-hover: #9595FF;
  --primary-soft: rgba(124, 124, 250, 0.16);
  --primary-soft-2: rgba(124, 124, 250, 0.28);
  --surface-2: #141D36;
  --surface-sunken: #0E1528;
  --bg: #0A0F1E;
  --glass: rgba(20, 29, 52, 0.66);
  --glass-strong: rgba(22, 32, 58, 0.86);
  --glass-border: rgba(148, 163, 255, 0.14);
  --border: rgba(80, 96, 140, 0.32);
  --brand-gradient: linear-gradient(135deg, #18213D 0%, #1E1B4B 55%, #0F2E36 100%);
}

/* ---------- Silk backdrop ----------
   A soft three-stop pastel gradient (--silk-1..3) under a white wash, with brushed-light
   streaks (assets/images/silk-streaks.svg) on top. Each background palette only sets the variables. */
[data-style='v2'] {
  --silk-1: #C9D3FF; --silk-2: #E6DCFF; --silk-3: #BFF0EC; --silk-wash: rgba(255, 255, 255, 0.55); --silk-streak: 0.45;
}
[data-style='v2'][data-theme='dark'] {
  --silk-1: #141A3D; --silk-2: #1E1B4B; --silk-3: #0E2A33; --silk-wash: rgba(255, 255, 255, 0.03); --silk-streak: 0.06;
}
[data-style='v2'] body { background: var(--bg); }
[data-style='v2'] body::before,
[data-style='v2'] body::after { content: ''; position: fixed; inset: 0; z-index: -1; pointer-events: none; }
[data-style='v2'] body::before {
  background:
    radial-gradient(120% 70% at 50% -15%, var(--silk-wash), transparent 65%),
    linear-gradient(105deg, var(--silk-1) 0%, var(--silk-2) 52%, var(--silk-3) 100%);
}
[data-style='v2'] body::after { background: url('../assets/images/silk-streaks.svg') center / 100% 100% no-repeat; opacity: var(--silk-streak); }

/* ---------- Glass surfaces ---------- */
[data-style='v2'] .card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
}
[data-style='v2'][data-theme='dark'] .card { box-shadow: var(--shadow-md); }
[data-style='v2'] .card__head { border-bottom-color: transparent; padding-bottom: var(--sp-2); }
[data-style='v2'] .card__title { font-size: var(--fs-lg); font-family: var(--font-display); letter-spacing: -0.02em; }
[data-style='v2'] .card__foot { border-top-color: var(--border); background: transparent; }
[data-style='v2'] .list-row { border-bottom-color: transparent; margin: 0 var(--sp-2); padding-left: var(--sp-3); padding-right: var(--sp-3); border-radius: var(--r-md); }
[data-style='v2'] a.list-row:hover, [data-style='v2'] button.list-row:hover { background: var(--glass-strong); box-shadow: var(--shadow-sm); }
[data-style='v2'] .subject-icon, [data-style='v2'] .kpi__icon { border-radius: 12px; }
[data-style='v2'] .date-chip { border-radius: 14px; background: var(--glass-strong); }

/* ---------- Shell: floating sidebar & topbar ---------- */
@media (min-width: 768px) {
  [data-style='v2'] .sidebar {
    margin: 12px 0 12px 12px; height: calc(100dvh - 24px); top: 12px;
    border-radius: var(--r-xl); border: 1px solid var(--glass-border);
    background: var(--glass); backdrop-filter: blur(20px) saturate(1.4); -webkit-backdrop-filter: blur(20px) saturate(1.4);
    box-shadow: var(--shadow-md);
  }
  [data-style='v2'] .app { grid-template-columns: calc(var(--sidebar-w) + 12px) minmax(0, 1fr); }
  [data-style='v2'] body[data-sidebar='collapsed'] .app { grid-template-columns: calc(var(--sidebar-rail) + 12px) minmax(0, 1fr); }
}
@media (min-width: 768px) and (max-width: 1023px) {
  [data-style='v2'] .app, [data-style='v2'] body[data-sidebar='collapsed'] .app { grid-template-columns: calc(var(--sidebar-rail) + 12px) minmax(0, 1fr); }
}
[data-style='v2'] .sidebar__school { background: var(--glass-strong); border-color: var(--glass-border); border-radius: 16px; }
[data-style='v2'] .nav-item { border-radius: 14px; height: 42px; }
[data-style='v2'] .nav-item.is-active { background: linear-gradient(135deg, var(--primary), #7C6CF6); color: #fff; box-shadow: 0 10px 20px -10px rgba(91, 91, 240, 0.7); }
[data-style='v2'] .nav-item.is-active .icon { color: #fff; }
[data-style='v2'] .nav-item.is-active::before { display: none; }
[data-style='v2'] .nav-item.is-active .nav-badge { background: #fff; color: var(--primary); }
[data-style='v2'] .topbar, [data-style='v2'] .topbar.is-scrolled { background: transparent; border-bottom-color: transparent; backdrop-filter: none; -webkit-backdrop-filter: none; }
[data-style='v2'] .topbar.is-scrolled .topbar__actions,
[data-style='v2'] .topbar.is-scrolled .topbar__title { background: var(--glass-strong); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-radius: 999px; box-shadow: var(--shadow-sm); padding: 4px 8px; }
[data-style='v2'] .topbar.is-scrolled .topbar__title { padding: 4px 16px; }
[data-style='v2'] .topbar__search .input { border-radius: 999px; background: var(--glass-strong); border-color: var(--glass-border); }
[data-style='v2'] .bottom-nav { background: var(--glass-strong); border-top-color: var(--glass-border); }
@media (max-width: 767px) {
  [data-style='v2'] .bottom-nav { left: 10px; right: 10px; bottom: calc(10px + var(--safe-bottom)); padding-bottom: 0; height: var(--bottomnav-h); border-radius: 24px; border: 1px solid var(--glass-border); box-shadow: var(--shadow-lg); }
  [data-style='v2'] .content { padding-bottom: calc(var(--bottomnav-h) + var(--safe-bottom) + 40px); }
  [data-style='v2'] .topbar { background: color-mix(in srgb, var(--bg) 70%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
}

/* ---------- Controls: pills ---------- */
[data-style='v2'] .btn { border-radius: 999px; padding: 0 18px; }
[data-style='v2'] .btn--sm { padding: 0 14px; }
[data-style='v2'] .btn:not(.btn--primary):not(.btn--danger):not(.btn--success):not(.btn--soft):not(.btn--ghost):not(.btn--danger-soft):not(.btn--white):not(.btn--glass):not(.auth__submit) { background: var(--glass-strong); border-color: var(--glass-border); box-shadow: var(--shadow-sm); }
[data-style='v2'] .btn--primary { background: linear-gradient(135deg, var(--primary), #7C6CF6); border-color: transparent; box-shadow: 0 12px 24px -12px rgba(91, 91, 240, 0.75), inset 0 1px 0 rgba(255, 255, 255, 0.25); }
[data-style='v2'] .btn--primary:hover { filter: brightness(1.06); background: linear-gradient(135deg, var(--primary), #7C6CF6); }
[data-style='v2'] .icon-btn { border-radius: 999px; }
[data-style='v2'] .input, [data-style='v2'] .select, [data-style='v2'] .textarea { border-radius: 14px; background: var(--glass-strong); border-color: var(--border); box-shadow: none; }
[data-style='v2'] .chip, [data-style='v2'] .tag { border-radius: 999px; background: var(--glass-strong); border-color: var(--glass-border); box-shadow: var(--shadow-xs); }
[data-style='v2'] .chip[aria-pressed='true'] { background: var(--primary); border-color: var(--primary); color: #fff; }
[data-style='v2'][data-theme='dark'] .chip[aria-pressed='true'] { background: #5B5BF0; border-color: #5B5BF0; }
[data-style='v2'] .segmented { border-radius: 999px; background: var(--surface-sunken); }
[data-style='v2'] .segmented button, [data-style='v2'] .seg-radio span { border-radius: 999px; }
[data-style='v2'] .badge { border-color: transparent; }
[data-style='v2'] .tabs { border-bottom-color: transparent; gap: 4px; padding: 6px var(--sp-3) !important; }
[data-style='v2'] .tab { border-radius: 999px; padding: 7px 14px; }
[data-style='v2'] .tab[aria-selected='true'] { background: var(--primary-soft); }
[data-style='v2'] .tab[aria-selected='true']::after { display: none; }
[data-style='v2'] .toolbar { border-bottom-color: transparent; }
[data-style='v2'] .table th { background: transparent; }
[data-style='v2'] .dlg { border-radius: 28px; background: var(--glass-strong); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); }
[data-style='v2'][data-theme='dark'] .dlg:not(.lightbox) { background: rgba(16, 23, 43, 0.97); }
[data-style='v2'] .dlg.lightbox { border-radius: 0; background: rgba(10, 14, 36, 0.92); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); }
[data-style='v2'] .dlg__foot { background: transparent; }
[data-style='v2'] .dlg--drawer { border-radius: 28px 0 0 28px; }
[data-style='v2'] .popover { border-radius: 20px; background: var(--glass-strong); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); }
[data-style='v2'] .toast { border-radius: 18px; }
[data-style='v2'] .event-card { border-radius: 16px; background: var(--glass-strong); }

/* ---------- Greeting panels: light frosted instead of navy ---------- */
[data-style='v2'] .welcome, [data-style='v2'] .child-hero {
  background: var(--brand-gradient); color: var(--text);
  border: 1px solid var(--glass-border); box-shadow: var(--shadow-md);
}
[data-style='v2'] .welcome::after, [data-style='v2'] .child-hero::after {
  background: radial-gradient(420px 260px at 88% 0%, rgba(124, 108, 246, 0.22), transparent 70%), radial-gradient(360px 240px at 0% 110%, rgba(45, 212, 191, 0.2), transparent 70%);
}
[data-style='v2'] .welcome__pattern polygon { stroke: rgba(91, 91, 240, 0.18); fill: rgba(91, 91, 240, 0.03); }
[data-style='v2'] .welcome__pattern path { stroke: rgba(13, 148, 136, 0.35); }
[data-style='v2'] .welcome__title, [data-style='v2'] .child-hero__name { color: var(--text); }
[data-style='v2'] .welcome__date, [data-style='v2'] .welcome__sub, [data-style='v2'] .child-hero__greet, [data-style='v2'] .child-hero__meta { color: var(--text-2); }
[data-style='v2'] .welcome__demo, [data-style='v2'] .child-hero__switch { background: var(--glass-strong); border-color: var(--glass-border); color: var(--text-2); }
[data-style='v2'] .welcome__aside, [data-style='v2'] .child-stat { background: var(--glass-strong); border-color: var(--glass-border); color: var(--text); box-shadow: var(--shadow-sm); }
[data-style='v2'] .welcome__aside-label, [data-style='v2'] .child-stat__label { color: var(--text-3); }
[data-style='v2'] .welcome__aside-meta, [data-style='v2'] .child-stat__meta { color: var(--text-2); }
[data-style='v2'] .welcome__big span { color: var(--text-4); }
[data-style='v2'] .welcome__progress { background: var(--surface-sunken); }
[data-style='v2'] .welcome__next { color: var(--text); border-top-color: var(--border); }
[data-style='v2'] .child-stat:hover { background: #fff; }
[data-style='v2'][data-theme='dark'] .child-stat:hover { background: var(--glass); }
[data-style='v2'] .welcome .btn.btn--white { background: linear-gradient(135deg, var(--primary), #7C6CF6); color: #fff; border-color: transparent; box-shadow: 0 12px 24px -12px rgba(91, 91, 240, 0.75); }
[data-style='v2'] .welcome .btn--glass { background: var(--glass-strong); color: var(--text); border-color: var(--glass-border); backdrop-filter: blur(8px); }
[data-style='v2'] .welcome .btn--glass:hover { background: #fff; }
[data-style='v2'][data-theme='dark'] .welcome .btn--glass:hover { background: var(--glass); }
[data-style='v2'] .child-hero .avatar { box-shadow: 0 0 0 4px var(--glass-strong); }

/* Brand orb: our hexagon symbol rendered as a soft glossy object */
.brand-orb { display: none; }
[data-style='v2'] .brand-orb {
  display: grid; place-items: center; width: 76px; height: 76px; margin-bottom: var(--sp-3);
  border-radius: 26px; position: relative;
  background: radial-gradient(circle at 30% 25%, #fff, #E9E7FF 55%, #D9F3F1);
  box-shadow: 0 20px 34px -16px rgba(91, 91, 240, 0.55), inset 0 -6px 14px rgba(124, 108, 246, 0.18);
  /* Own compositor layer: the float glides sub-pixel instead of repainting the glass card behind it. */
  will-change: transform; transform: translate3d(0, 0, 0); backface-visibility: hidden;
  animation: orb-float 6s ease-in-out infinite;
}
[data-style='v2'] .brand-orb img { width: 46px; height: 46px; filter: drop-shadow(0 6px 10px rgba(79, 70, 229, 0.35)); }
@keyframes orb-float { 0%, 100% { transform: translate3d(0, 0, 0); } 50% { transform: translate3d(0, -4px, 0); } }
[data-motion='reduced'] .brand-orb { animation: none; }
@media (prefers-reduced-motion: reduce) { .brand-orb { animation: none !important; } }

/* ---------- Rings ---------- */
.ring { margin: 0; display: grid; justify-items: center; gap: 8px; position: relative; text-align: center; }
.ring svg { width: 104px; height: 104px; transform: rotate(-90deg); }
.ring__track { fill: none; stroke: var(--surface-sunken); stroke-width: 9; }
.ring__bar { fill: none; stroke-width: 9; stroke-linecap: round; transition: stroke-dasharray var(--dur-slow) var(--ease); }
.ring__value { position: absolute; top: 0; left: 0; right: 0; height: 104px; display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-weight: 800; font-size: 24px; letter-spacing: -0.03em; line-height: 1; }
.ring__value small { display: inline-block; width: 0; white-space: nowrap; padding-left: 1px; transform: translateY(3px); font-size: 12px; font-weight: 700; letter-spacing: 0; color: var(--text-3); }
.ring__label { font-size: var(--fs-sm); font-weight: 600; display: flex; flex-direction: column; }
.ring__label span { font-size: var(--fs-xs); font-weight: 500; color: var(--text-3); }
.pulse__rings { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--sp-3); align-items: start; }
.pulse__rings--wide { max-width: 720px; margin: 0 auto; width: 100%; }

/* ---------- Week schedule ---------- */
.week__list { display: flex; flex-direction: column; padding: 0 var(--sp-5) var(--sp-5); gap: 6px; }
.week__row { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: var(--sp-3); align-items: center; padding: 8px 12px; border-radius: 16px; }
.week__row.is-today { background: var(--primary-soft); }
.week__day { display: flex; align-items: center; gap: 8px; font-size: var(--fs-sm); color: var(--text-2); }
.week__day .icon { color: var(--text-3); }
.week__day strong { color: var(--text); }
.week__events { display: flex; gap: 8px; flex-wrap: wrap; min-width: 0; }
.week__event {
  display: inline-flex; flex-direction: column; gap: 1px; max-width: 240px; min-width: 0;
  padding: 6px 12px; border-radius: 12px; background: var(--cs); color: var(--text);
  border-left: 3px solid var(--c); font-size: var(--fs-sm); font-weight: 600;
  box-shadow: var(--shadow-xs); transition: transform var(--dur-fast) var(--ease);
}
.week__event:hover { text-decoration: none; transform: translateY(-1px); }
.week__time { font-size: 11px; font-weight: 600; color: var(--c); }
.week__empty { font-size: var(--fs-xs); color: var(--text-4); }

/* ---------- Sign-in: soft aurora instead of navy ---------- */
[data-style='v2'] .auth { background: transparent; }
[data-style='v2'] .auth__brand { background: var(--brand-gradient); color: var(--text); margin: 16px; border-radius: 32px; border: 1px solid var(--glass-border); box-shadow: var(--shadow-md); }
[data-style='v2'] .auth__brand::before { background: radial-gradient(600px 360px at 100% 0%, rgba(124, 108, 246, 0.28), transparent 65%), radial-gradient(480px 320px at 0% 100%, rgba(45, 212, 191, 0.24), transparent 65%); }
[data-style='v2'] .auth__brand::after { filter: invert(1); opacity: 0.25; }
[data-style='v2'] .auth__headline { color: var(--text); }
[data-style='v2'] .auth__headline span { background: linear-gradient(90deg, #5B5BF0, #0D9488); -webkit-background-clip: text; background-clip: text; }
[data-style='v2'] .auth__lede, [data-style='v2'] .auth__features li { color: var(--text-2); }
[data-style='v2'] .auth__features strong { color: var(--text); }
[data-style='v2'] .auth__features li > .icon { background: var(--glass-strong); color: var(--primary); box-shadow: var(--shadow-sm); }
[data-style='v2'] .auth__eyebrow, [data-style='v2'] .auth__school { background: var(--glass-strong); border-color: var(--glass-border); color: var(--text-2); }
[data-style='v2'] .auth__school .fw-6 { color: var(--text); }
[data-style='v2'] .auth__panel { background: transparent; }
[data-style='v2'] .role-card { background: var(--glass-strong); border-radius: 20px; }
[data-style='v2'] .auth__logo--dark { display: none; }
.auth__logo--light { display: none; }
[data-style='v2'] .auth__logo--light { display: block; }

/* Hero media panels keep their imagery */
[data-style='v2'] .activity-feature { border-radius: var(--r-xl); background: linear-gradient(150deg, #1E2A55 0%, #2B2F7A 55%, #4338CA 100%); border-color: transparent; backdrop-filter: none; }
[data-style='v2'] .school-hero, [data-style='v2'] .activity-hero { border-radius: var(--r-xl); }

@media (max-width: 1199px) {
  .week__row { grid-template-columns: 150px minmax(0, 1fr); }
}
@media (max-width: 767px) {
  .pulse__rings { gap: 4px; }
  .ring svg { width: 84px; height: 84px; }
  .ring__value { height: 84px; font-size: 19px; }
  .ring__label { font-size: 12px; }
  .week__list { padding: 0 var(--sp-3) var(--sp-4); }
  .week__row { grid-template-columns: minmax(0, 1fr); gap: 6px; }
  [data-style='v2'] .auth__brand { display: none; }
  [data-style='v2'] .brand-orb { width: 60px; height: 60px; border-radius: 20px; }
  [data-style='v2'] .brand-orb img { width: 36px; height: 36px; }
}

.pulse { display: flex; flex-direction: column; }
.pulse .pulse__rings { flex: 1; align-content: center; }
[data-style='v2'] .btn--white { background: linear-gradient(135deg, var(--primary), #7C6CF6); color: #fff; border-color: transparent; }

/* QA pass: calendar category filters keep their own category colours in V2 */
[data-style='v2'] .cal-filters .chip[aria-pressed='true'] { background: var(--cs); color: var(--c); border-color: color-mix(in srgb, var(--c) 30%, transparent); box-shadow: none; }
[data-style='v2'] .cal-filters .chip[aria-pressed='false'] { background: var(--glass); color: var(--text-3); }
[data-style='v2'] .auth--center { background: transparent; }
[data-style='v2'] .auth--center .auth__card { background: var(--glass-strong); border-color: var(--glass-border); -webkit-backdrop-filter: blur(24px); backdrop-filter: blur(24px); }
[data-style='v2'] .auth--center .role-card { border-radius: 20px; }
[data-style='v2'] .auth--center .auth__eyebrow, [data-style='v2'] .auth--center .auth__features li { background: var(--glass-strong); border-color: var(--glass-border); }
/* Dark: deeper fills so white button text keeps 4.5:1 (--primary stays light for text links) */
[data-style='v2'][data-theme='dark'] .btn--primary,
[data-style='v2'][data-theme='dark'] .btn--white { background: linear-gradient(135deg, #5B5BF0, #6D4FE8); }
[data-style='v2'][data-theme='dark'] .btn--primary:hover,
[data-style='v2'][data-theme='dark'] .btn--white:hover { background: linear-gradient(135deg, #4B47DE, #5F3FD9); }
[data-style='v2'][data-theme='dark'] .welcome .btn.btn--white,
[data-style='v2'][data-theme='dark'] .nav-item.is-active { background: linear-gradient(135deg, #5B5BF0, #6D4FE8); }

/* ---------- Mobile bottom menu: solid enough to read over content, nothing peeking underneath ---------- */
@media (max-width: 767px) {
  [data-style='v2'] .bottom-nav { --bottomnav-h: 68px; background: color-mix(in srgb, var(--surface) 92%, transparent); backdrop-filter: blur(22px) saturate(1.5); -webkit-backdrop-filter: blur(22px) saturate(1.5); }
  [data-style='v2'][data-theme='dark'] .bottom-nav { background: rgba(15, 21, 40, 0.94); border-color: rgba(148, 163, 255, 0.16); box-shadow: 0 -12px 32px -12px rgba(0, 0, 0, 0.7), 0 20px 40px -12px rgba(0, 0, 0, 0.8); }
  /* Covers the strip between the floating bar and the screen edge so scrolled content doesn't show through. */
  [data-style='v2'] .bottom-nav::before { content: ''; position: absolute; left: -12px; right: -12px; top: 100%; height: calc(12px + var(--safe-bottom)); background: color-mix(in srgb, var(--bg) 80%, transparent); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); pointer-events: none; }
  [data-style='v2'] .bottom-nav::after { content: ''; position: absolute; left: -12px; right: -12px; bottom: 100%; height: 22px; background: linear-gradient(to bottom, transparent, color-mix(in srgb, var(--bg) 85%, transparent)); pointer-events: none; }
  [data-style='v2'] .bottom-nav__list { height: 100%; padding: 0 2px; }
  [data-style='v2'] .bottom-nav__item { gap: 4px; color: var(--text-2); font-size: 10.5px; letter-spacing: -0.01em; }
  [data-style='v2'] .bottom-nav__item.is-active { color: var(--primary-text); }
  [data-style='v2'] .bottom-nav__item .glass-ico { margin: 0; }
  [data-style='v2'] .bottom-nav__item .icon-wrap { height: 32px; }
  [data-style='v2'] .bottom-nav__item:not(.is-active) .glass-ico { opacity: 1; }
  [data-style='v2'] .bottom-nav__dot { top: 7px; left: calc(50% + 10px); box-shadow: 0 0 0 2px var(--surface); }
}

/* ---------- Background palettes (Settings → Background, palette button) ----------
   Periwinkle is the default (values above). Midnight is the brand-dark palette and always
   renders with the dark theme (see shell.js). Cards stay frosted, so content contrast holds. */
html[data-bg='mint'] { --bg: #EAF9F5; }
html[data-bg='sky'] { --bg: #EAF3FD; }
html[data-bg='peach'] { --bg: #FDF2EB; }
html[data-bg='lavender'] { --bg: #F5EEFC; }
html[data-bg='mint'][data-theme='dark'] { --bg: #06171B; }
html[data-bg='sky'][data-theme='dark'] { --bg: #07111F; }
html[data-bg='peach'][data-theme='dark'] { --bg: #150E13; }
html[data-bg='lavender'][data-theme='dark'] { --bg: #100B1E; }
html[data-bg='midnight'] { --bg: #0B1328; }

html[data-bg='mint'][data-style='v2'] { --bg: #EAF9F5; --silk-1: #A6F2F6; --silk-2: #D2F7DC; --silk-3: #F8F3AE; }
html[data-bg='sky'][data-style='v2'] { --bg: #EAF3FD; --silk-1: #A9D0FF; --silk-2: #BDF0FF; --silk-3: #E1F9F5; }
html[data-bg='peach'][data-style='v2'] { --bg: #FDF2EB; --silk-1: #FFCBAE; --silk-2: #FFD6E4; --silk-3: #FFF0B0; }
html[data-bg='lavender'][data-style='v2'] { --bg: #F5EEFC; --silk-1: #D9C6FF; --silk-2: #F2CCF2; --silk-3: #FFDEEA; }
html[data-bg='mint'][data-style='v2'][data-theme='dark'] { --bg: #06171B; --silk-1: #052A30; --silk-2: #0B2C24; --silk-3: #26280C; }
html[data-bg='sky'][data-style='v2'][data-theme='dark'] { --bg: #07111F; --silk-1: #071A3A; --silk-2: #0A2A4A; --silk-3: #08303A; }
html[data-bg='peach'][data-style='v2'][data-theme='dark'] { --bg: #150E13; --silk-1: #2A1418; --silk-2: #2A1027; --silk-3: #2A2110; }
html[data-bg='lavender'][data-style='v2'][data-theme='dark'] { --bg: #100B1E; --silk-1: #1D1240; --silk-2: #2C1238; --silk-3: #2A1430; }
/* Cloud (default): plain, near-white neutral with no streaks; a flat calm dark in dark mode. */
html[data-bg='cloud'] { --bg: #F5F7FB; }
html[data-bg='cloud'][data-style='v2'] { --bg: #F5F7FB; --silk-1: #F3F5FA; --silk-2: #F7F8FC; --silk-3: #F2F5F9; --silk-wash: rgba(255, 255, 255, 0.7); --silk-streak: 0; --brand-gradient: linear-gradient(135deg, #FFFFFF 0%, #F7F8FC 55%, #F1F4F9 100%); }
html[data-bg='cloud'][data-theme='dark'] { --bg: #0B1120; }
html[data-bg='cloud'][data-style='v2'][data-theme='dark'] { --bg: #0B1120; --silk-1: #0B1120; --silk-2: #0E1528; --silk-3: #0B1120; --silk-wash: rgba(255, 255, 255, 0.02); --silk-streak: 0; --brand-gradient: linear-gradient(135deg, #131B30 0%, #161E36 55%, #121A2C 100%); }
/* Midnight: logo navy into indigo, lit by the teal of the symbol's node. */
html[data-bg='midnight'][data-style='v2'] { --bg: #0B1328; --silk-1: #0B1328; --silk-2: #1E1B5B; --silk-3: #0B3B3C; --silk-wash: rgba(79, 70, 229, 0.18); --silk-streak: 0.08; }

/* Picker */
.bg-picker { position: relative; display: inline-flex; }
.bg-popover { top: calc(100% + 8px); right: 0; width: 400px; max-width: calc(100vw - 24px); padding: 14px; }
[data-style='v2'] .bg-popover { border-radius: 22px; background: var(--glass-strong); border-color: var(--glass-border); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); }
[data-style='v2'][data-theme='dark'] .bg-popover { background: rgba(18, 26, 48, 0.97); }
.bg-pop__title { font-family: var(--font-display); font-weight: 700; font-size: var(--fs-md); }
.bg-pop__sub { font-size: var(--fs-xs); color: var(--text-3); margin: 2px 0 12px; }
.bg-swatches { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 2px; }
.bg-swatch { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 6px 2px; border-radius: 12px; font-size: 11px; font-weight: 600; color: var(--text-2); }
.bg-swatch:hover { background: var(--surface-hover); color: var(--text); }
.bg-swatch:focus-visible { outline: 2px solid var(--primary); outline-offset: 1px; }
.bg-swatch[aria-checked='true'] { color: var(--text); }
.bg-swatch__dot { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; color: transparent; box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.08), 0 4px 10px -4px rgba(15, 23, 42, 0.3); transition: box-shadow var(--dur) var(--ease), transform var(--dur-fast) var(--ease); }
.bg-swatch:hover .bg-swatch__dot { transform: scale(1.06); }
.bg-swatch[aria-checked='true'] .bg-swatch__dot { color: #fff; box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--primary), 0 6px 14px -6px rgba(15, 23, 42, 0.45); }
.bg-swatch__dot .icon { filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.45)); }
[class*='bg-swatch__dot--'] { background-size: 100% 100%; }
.bg-swatch__dot--cloud { background: linear-gradient(145deg, #FFFFFF, #EDF0F6); box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.12), 0 4px 10px -4px rgba(15, 23, 42, 0.25); }
.bg-swatch__dot--cloud .icon { color: var(--primary); filter: none; }
.bg-swatch__dot--periwinkle { background: url('../assets/images/silk-streaks.svg') center / cover, linear-gradient(105deg, #B9C6FF, #E1D4FF 52%, #ABEBE6); }
.bg-swatch__dot--mint { background: url('../assets/images/silk-streaks.svg') center / cover, linear-gradient(105deg, #8EEFF5, #C8F5D2 52%, #F5EE90); }
.bg-swatch__dot--sky { background: url('../assets/images/silk-streaks.svg') center / cover, linear-gradient(105deg, #8CC1FF, #A8ECFF 52%, #D3F7F1); }
.bg-swatch__dot--peach { background: url('../assets/images/silk-streaks.svg') center / cover, linear-gradient(105deg, #FFB892, #FFC6DA 52%, #FFE98E); }
.bg-swatch__dot--lavender { background: url('../assets/images/silk-streaks.svg') center / cover, linear-gradient(105deg, #CBB2FF, #EEB9EE 52%, #FFD0E1); }
.bg-swatch__dot--midnight { background: radial-gradient(circle at 70% 75%, rgba(20, 184, 166, 0.75), transparent 55%), radial-gradient(circle at 30% 30%, rgba(79, 70, 229, 0.85), transparent 60%), #14213D; }
.setting-row--stack { flex-wrap: wrap; }
.bg-swatches--row { flex: 1 1 100%; grid-template-columns: repeat(7, minmax(0, 68px)); justify-content: start; }

/* Placements */
.auth__tools { position: absolute; top: calc(16px + var(--safe-top)); right: calc(16px + var(--safe-right)); z-index: 2; display: flex; gap: 8px; }
.auth__tools .icon-btn { width: 44px; height: 44px; border-radius: 50%; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-sm); }
[data-style='v2'] .auth__tools .icon-btn { background: var(--glass-strong); border-color: var(--glass-border); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
.public-header__tools { margin-left: auto; display: inline-flex; gap: 4px; }
@media (max-width: 479px) { .topbar__bg { display: none; } }
/* Hero panels (welcome, child hero) pick up the palette too, so each choice reads at a glance. */
html[data-bg='mint'][data-style='v2'] { --brand-gradient: linear-gradient(135deg, #FFFFFF 0%, #E2F7EF 45%, #E2F2FB 100%); }
html[data-bg='sky'][data-style='v2'] { --brand-gradient: linear-gradient(135deg, #FFFFFF 0%, #E3ECFF 45%, #DDF5FA 100%); }
html[data-bg='peach'][data-style='v2'] { --brand-gradient: linear-gradient(135deg, #FFFFFF 0%, #FFEADF 45%, #FCE4EF 100%); }
html[data-bg='lavender'][data-style='v2'] { --brand-gradient: linear-gradient(135deg, #FFFFFF 0%, #EFE6FF 45%, #FAE5F9 100%); }
html[data-bg='mint'][data-style='v2'][data-theme='dark'] { --brand-gradient: linear-gradient(135deg, #0E2228 0%, #0F2F2C 55%, #12291C 100%); }
html[data-bg='sky'][data-style='v2'][data-theme='dark'] { --brand-gradient: linear-gradient(135deg, #0F1D3A 0%, #13265A 55%, #0E2C3A 100%); }
html[data-bg='peach'][data-style='v2'][data-theme='dark'] { --brand-gradient: linear-gradient(135deg, #24161F 0%, #34182A 55%, #2E1F14 100%); }
html[data-bg='lavender'][data-style='v2'][data-theme='dark'] { --brand-gradient: linear-gradient(135deg, #1D1638 0%, #2E1A4F 55%, #261845 100%); }
html[data-bg='midnight'][data-style='v2'] { --brand-gradient: linear-gradient(135deg, #14213D 0%, #2B2780 55%, #0F4C4A 100%); }
@media (max-width: 479px) { .bg-swatches, .bg-swatches--row { grid-template-columns: repeat(4, minmax(0, 1fr)); row-gap: 8px; } }

/* Plain buttons in Soft glass: the frosted rule above outranks the base .btn:hover, so restate the hover here. */
[data-style='v2'] .btn:not(.btn--primary):not(.btn--danger):not(.btn--success):not(.btn--soft):not(.btn--ghost):not(.btn--danger-soft):not(.btn--white):not(.btn--glass):not(.auth__submit):hover { background: var(--surface); border-color: color-mix(in srgb, var(--primary) 30%, var(--glass-border)); color: var(--text); box-shadow: var(--shadow-md); }
[data-style='v2'][data-theme='dark'] .btn:not(.btn--primary):not(.btn--danger):not(.btn--success):not(.btn--soft):not(.btn--ghost):not(.btn--danger-soft):not(.btn--white):not(.btn--glass):not(.auth__submit):hover { background: rgba(124, 124, 250, 0.14); border-color: rgba(165, 171, 252, 0.4); color: #fff; }