freezmo/app/globals.css
Martin Dvorak 92fe68524b Make the frosted glass actually visible
The wash was far too faint for backdrop-blur to register, so the glass
read as flat navy. Now:

- The backdrop is a real colour field: four saturated blue/periwinkle/
  cyan radial blobs over the navy base, plus two slow animated blobs at
  higher opacity and less pre-blur, placed behind the content column.
- Surfaces are properly translucent instead of near-opaque: cards 62%,
  glass panels 68%, sidebar 68%, list groups 70%, study chrome 72%,
  tab bar 74%, mobile header 62%.
- Glass gets a specular top edge (inset 0 1px 0 --glass-top) so the
  surface catches light like real glass.
- Light --text-subtle darkened to #55647f so text still clears AA on the
  tinted glass (4.84:1 on the most saturated sidebar area).

Audit updated to the tinted backgrounds: contrast 21/21. Suites: deck
chrome 15/15, deck fixes 15/15, final ux 12/12, key gate 49/49, install
sheet 64/64, retry 14/14, zoom 6/6, security 8/8, pwa 16/16.
2026-10-08 08:01:14 +00:00

602 lines
19 KiB
CSS

@import "tailwindcss";
/* Class-based dark mode (toggled on <html> by the theme script). */
@custom-variant dark (&:where(.dark, .dark *));
@theme {
/* Navy-tinted neutral scale — sampled from the app icon. ---------------- */
--color-frost-50: #f5f8fd;
--color-frost-100: #eaf0fa;
--color-frost-200: #d9e3f3;
--color-frost-300: #c2cfe4;
--color-frost-400: #92a3c0;
--color-frost-500: #6a7c9b;
--color-frost-600: #4e5f7d;
--color-frost-700: #3c4b66;
--color-frost-800: #2b3752;
--color-frost-900: #1d2740;
--color-frost-950: #0e1526;
/* Accent: the icon's snowflake blue. ------------------------------------ */
--color-accent-50: #eff7ff;
--color-accent-100: #dbecff;
--color-accent-200: #bcdcff;
--color-accent-300: #8fc6ff;
--color-accent-400: #59a8f7;
--color-accent-500: #3f95ea;
--color-accent-600: #2478d2;
--color-accent-700: #1d61ab;
--color-accent-800: #1c518b;
--color-accent-900: #1b4473;
/* Aurora hues used only for the frosted backdrop wash. ----------------- */
--color-aurora-mint: #9fe3d0;
--color-aurora-sky: #9ccdf5;
--color-aurora-lilac: #c3b6f0;
--color-aurora-peach: #f6cdb4;
--font-sans: -apple-system, BlinkMacSystemFont, ui-sans-serif, system-ui,
"Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif,
"Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji";
--shadow-frost: 0 14px 34px -22px rgb(13 13 13 / 0.28);
--shadow-lift: 0 4px 14px -8px rgb(13 13 13 / 0.18);
--shadow-hairline: 0 1px 0 0 rgb(13 13 13 / 0.04);
--animate-float: float 11s ease-in-out infinite;
--animate-pop: pop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
--animate-wiggle: wiggle 0.4s ease-in-out;
--animate-rise: rise 0.4s cubic-bezier(0.22, 1, 0.36, 1) both;
--animate-sheet: sheet 0.32s cubic-bezier(0.22, 1, 0.36, 1) both;
}
@keyframes float {
0%, 100% { transform: translate3d(0, 0, 0) scale(1) }
50% { transform: translate3d(0, -18px, 0) scale(1.04) }
}
@keyframes pop {
0% { transform: scale(0.92) }
60% { transform: scale(1.02) }
100% { transform: scale(1) }
}
@keyframes wiggle {
0%, 100% { transform: translateX(0) }
25% { transform: translateX(-5px) }
75% { transform: translateX(5px) }
}
@keyframes rise {
from { opacity: 0; transform: translateY(10px) }
to { opacity: 1; transform: translateY(0) }
}
@keyframes sheet {
from { opacity: 0; transform: translateY(24px) }
to { opacity: 1; transform: translateY(0) }
}
/* ---------------------------------------------------------------------------
Theme tokens.
Light: ChatGPT-ish neutral (page #ffffff, sidebar #f9f9f9, border #e5e5e5).
Dark: page #212121, sidebar #171717, surfaces #2f2f2f, borders rgba(255,255,255,.1).
Text tiers are picked to clear WCAG AA (4.5:1) on their own background.
--------------------------------------------------------------------------- */
:root {
color-scheme: light;
--page: #f4f7fd;
--sidebar: #e9eff9;
--surface: #ffffff;
--surface-raised: #ffffff;
--surface-strong: #edf2fa;
--card-hover-bg: #f7faff;
--surface-sunken: rgb(14 21 40 / 0.05);
--hairline: #dce4f1;
--card-border: #d7e0ef;
--sidebar-divider: #d7e0ef;
--hairline-soft: rgb(14 21 40 / 0.07);
--glass-tint: rgb(255 255 255 / 0.55);
--glass-top: rgb(255 255 255 / 0.55);
--text: #0e1526; /* 16.9:1 on #f4f7fd */
--text-muted: #4d5c78; /* 6.3:1 */
--text-subtle: #55647f; /* 5.6:1 */
--hover: rgb(14 21 40 / 0.05);
--sidebar-top: #eef3fb;
--sidebar-bottom: #e5edf9;
--sidebar-edge: 0 1px 0 var(--sidebar-divider), 6px 0 18px -12px rgb(14 21 40 / 0.35);
/* API-key gate: cool near-white stage with soft blue glows, tinted input. */
--gate-base: #eef3fb;
--gate-glow-a: rgb(90 150 240 / 0.25);
--gate-glow-b: rgb(140 150 240 / 0.2);
--gate-card: #ffffff;
--gate-card-border: #dde5f2;
--gate-callout-bg: #eef3fa;
--gate-callout-border: #c9d5e8;
--field: #eef2f9;
--field-border: #dbe3f0;
--shadow-gate: 0 28px 70px -36px rgb(14 21 40 / 0.3), 0 1px 2px rgb(14 21 40 / 0.05);
/* Install sheet: light variant (dark is the default, see .dark). */
--install-sheet: #ffffff;
--install-card: #f7f7f8;
--install-chip: #f2f2f2;
--install-border: #e0e0e0;
--shadow-card: 0 1px 2px rgb(14 21 40 / 0.06), 0 1px 3px rgb(14 21 40 / 0.04);
--card-shadow: 0 1px 2px rgb(14 21 40 / 0.05), 0 5px 14px -6px rgb(14 21 40 / 0.12);
--shadow-card-hover: 0 12px 30px -12px rgb(14 21 40 / 0.2), 0 2px 6px rgb(14 21 40 / 0.07);
}
.dark {
color-scheme: dark;
--page: #0e1424;
--sidebar: #0a0f1c;
--surface: #171f33;
--surface-raised: #1e2740;
--surface-strong: #202a42;
--card-hover-bg: #1e2740;
--surface-sunken: rgb(255 255 255 / 0.07);
--hairline: rgb(255 255 255 / 0.12);
--card-border: rgb(255 255 255 / 0.12);
--sidebar-divider: rgb(255 255 255 / 0.1);
--hairline-soft: rgb(255 255 255 / 0.08);
--glass-tint: rgb(255 255 255 / 0.06);
--glass-top: rgb(255 255 255 / 0.08);
--text: #e9eefb; /* 15.4:1 on #0e1424 */
--text-muted: #b7c3dc; /* 10.4:1 */
--text-subtle: #94a4c2; /* 7.3:1 */
--hover: rgb(255 255 255 / 0.07);
--sidebar-top: #0b1120;
--sidebar-bottom: #080d18;
--sidebar-edge: 0 1px 0 var(--hairline), 6px 0 16px -14px rgb(0 0 0 / 0.75);
/* API-key gate: navy stage with the icon's blue glows, raised input. */
--gate-base: #0a0f1c;
--gate-glow-a: rgb(70 140 235 / 0.2);
--gate-glow-b: rgb(120 120 235 / 0.14);
--gate-card: #131a2c;
--gate-card-border: rgb(255 255 255 / 0.1);
--gate-callout-bg: rgb(255 255 255 / 0.06);
--gate-callout-border: rgb(255 255 255 / 0.2);
--field: #1b2438;
--field-border: rgb(255 255 255 / 0.1);
--shadow-gate: 0 30px 80px -40px rgb(0 0 0 / 0.85), 0 1px 2px rgb(0 0 0 / 0.4);
/* Install sheet: layered dark surfaces (default theme for the sheet). */
--install-sheet: #1c1c1e;
--install-card: #2c2c2e;
--install-chip: #3a3a3c;
--install-border: rgb(255 255 255 / 0.08);
--shadow-card: 0 1px 2px rgb(0 0 0 / 0.25);
--card-shadow: var(--shadow-card);
--shadow-card-hover: 0 10px 28px -16px rgb(0 0 0 / 0.55), 0 1px 2px rgb(0 0 0 / 0.3);
}
/* Backdrop: the icon's navy base with saturated blue/periwinkle/cyan blobs —
this is the colour the frosted surfaces are blurring. */
:root {
--bd-a: rgb(96 160 250 / 0.5);
--bd-b: rgb(150 150 245 / 0.42);
--bd-c: rgb(90 205 235 / 0.38);
--bd-top: #f7faff;
--bd-mid: #eef4fd;
--bd-bottom: #e8f0fb;
}
.dark {
--bd-a: rgb(48 120 235 / 0.42);
--bd-b: rgb(105 110 240 / 0.34);
--bd-c: rgb(50 165 220 / 0.3);
--bd-top: #101a30;
--bd-mid: #0c1220;
--bd-bottom: #080d18;
}
html,
body {
height: 100%;
overscroll-behavior: none;
}
body {
font-family: var(--font-sans);
-webkit-tap-highlight-color: transparent;
-webkit-font-smoothing: antialiased;
text-rendering: optimizeLegibility;
/* Matches the backdrop so iOS rubber-banding never shows a seam. */
background-color: var(--page);
color: var(--text);
overscroll-behavior-y: none;
}
.dark body {
color: var(--color-frost-100);
}
/* The page backdrop now lives in ONE viewport-fixed layer (see .app-backdrop)
so it can never stretch, scroll or be clipped by a content column.
`.frost-bg` stays as a transparent wrapper for pages that used it. */
.frost-bg {
background: transparent;
}
/* API-key gate stage: two big blurred blobs (top-right + bottom-left) over a
near-black (dark) or near-white (light) base. Real blurred elements read as
atmosphere; a flat radial gradient was too faint. Both blobs are decorative,
non-interactive and sit behind the card (z-index 0 vs the card's z-10). */
.gate-bg {
background: var(--gate-base);
}
.gate-bg::before,
.gate-bg::after {
content: "";
position: absolute;
z-index: 0;
width: 48rem;
height: 48rem;
border-radius: 9999px;
filter: blur(120px);
pointer-events: none;
}
.gate-bg::before {
top: -20rem;
right: -16rem;
background: var(--gate-glow-a);
}
.gate-bg::after {
bottom: -20rem;
left: -16rem;
background: var(--gate-glow-b);
}
.app-backdrop {
position: fixed;
inset: 0;
z-index: -10;
overflow: hidden;
pointer-events: none;
background:
radial-gradient(52vw 52vh at 12% 4%, var(--bd-a) 0%, transparent 68%),
radial-gradient(46vw 46vh at 94% 12%, var(--bd-b) 0%, transparent 66%),
radial-gradient(56vw 52vh at 78% 98%, var(--bd-c) 0%, transparent 68%),
radial-gradient(44vw 44vh at 26% 82%, var(--bd-a) 0%, transparent 70%),
linear-gradient(180deg, var(--bd-top) 0%, var(--bd-mid) 50%, var(--bd-bottom) 100%);
}
/* Two slow, saturated blobs so the glass always has colour to bend. */
.app-backdrop::before,
.app-backdrop::after {
content: "";
position: absolute;
border-radius: 50%;
filter: blur(80px);
opacity: 0.55;
}
.app-backdrop::before {
width: 44vw;
height: 44vw;
min-width: 20rem;
min-height: 20rem;
top: 4vh;
left: 6vw;
background: radial-gradient(circle, var(--bd-a), transparent 64%);
animation: float 16s ease-in-out infinite;
}
.app-backdrop::after {
width: 40vw;
height: 40vw;
min-width: 18rem;
min-height: 18rem;
bottom: -6vh;
right: 2vw;
background: radial-gradient(circle, var(--bd-c), transparent 64%);
animation: float 20s ease-in-out infinite reverse;
}
.dark .app-backdrop::before,
.dark .app-backdrop::after {
opacity: 0.6;
}
@layer components {
/* Glass primitives ------------------------------------------------------ */
.glass-panel {
@apply backdrop-blur-xl backdrop-saturate-150;
background: color-mix(in oklab, var(--surface) 68%, transparent);
border: 1px solid var(--hairline);
box-shadow: var(--shadow-card), inset 0 1px 0 var(--glass-top);
}
.glass-chip {
@apply backdrop-blur-md;
background: var(--surface-sunken);
border: 1px solid transparent;
}
.glass-chip:hover {
background: var(--hover);
}
.glass {
/* Tailwind emits both the prefixed and standard properties; hand-written
backdrop-filter gets minified down to -webkit- only, which paints nothing. */
@apply backdrop-blur-xl backdrop-saturate-150;
background: color-mix(in oklab, var(--surface) 62%, transparent);
border-bottom: 1px solid var(--hairline);
}
/* Study-feed chrome (progress header + bottom pager): the same neutral
surface as the cards, with a neutral border and shadow. */
.study-chrome {
@apply backdrop-blur-xl backdrop-saturate-150;
background: color-mix(in oklab, var(--surface) 72%, transparent);
border: 1px solid var(--hairline);
box-shadow: var(--shadow-card);
}
.dark .study-chrome {
border-color: var(--hairline-soft);
}
.card {
border-radius: 1.125rem; /* 18px */
@apply backdrop-blur-xl backdrop-saturate-150;
background: color-mix(in oklab, var(--surface) 62%, transparent);
border: 1px solid var(--card-border);
box-shadow: var(--card-shadow), inset 0 1px 0 var(--glass-top);
}
/* Opt-in hover lift for interactive cards (deck cards). Pointer devices only,
so touch screens never get sticky hover states. */
.card-hover {
transition: background-color 180ms ease, box-shadow 180ms ease, border-color 180ms ease, transform 180ms ease;
}
@media (hover: hover) and (pointer: fine) {
.card-hover:hover {
background: var(--card-hover-bg);
border-color: color-mix(in oklab, var(--hairline) 45%, var(--text) 20%);
box-shadow: var(--shadow-card-hover);
}
:root:not(.dark) .card-hover:hover {
transform: translateY(-2px);
}
}
.card-hover:active {
transform: translateY(0);
}
/* Inset grouped list ---------------------------------------------------- */
.list-group {
border-radius: 1rem;
@apply backdrop-blur-lg backdrop-saturate-150;
background: color-mix(in oklab, var(--surface) 70%, transparent);
border: 1px solid var(--hairline);
overflow: hidden;
}
.list-group > * + * {
border-top: 1px solid var(--hairline-soft);
}
/* iOS segmented control ------------------------------------------------- */
.segmented {
display: flex;
gap: 2px;
padding: 3px;
border-radius: 0.95rem;
@apply backdrop-blur-sm;
background: var(--surface-sunken);
border: 1px solid var(--hairline);
}
.segmented > button {
flex: 1;
border-radius: 0.75rem;
padding: 0.42rem 0.5rem;
font-size: 0.875rem;
font-weight: 600;
color: var(--color-frost-700);
transition: background-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}
.dark .segmented > button {
color: var(--color-frost-300);
}
.segmented > button[aria-pressed="true"],
.segmented > button[aria-checked="true"] {
background: var(--surface-strong);
color: var(--text);
box-shadow: 0 1px 2px rgb(13 13 13 / 0.12);
}
.dark .segmented > button[aria-pressed="true"],
.dark .segmented > button[aria-checked="true"] {
background: var(--surface-raised);
color: #fff;
}
/* Sheet grabber --------------------------------------------------------- */
.sheet-grabber {
width: 36px;
height: 5px;
border-radius: 999px;
background: var(--hairline-soft);
margin: 0 auto 0.75rem;
}
.tabbar {
@apply backdrop-blur-xl;
background: color-mix(in oklab, var(--page) 74%, transparent);
border-top: 1px solid var(--hairline);
}
/* Soft tinted chip for activity types (a hint of colour, not a rainbow) -- */
.tint-sky { background: linear-gradient(140deg, rgb(156 205 245 / 0.34), rgb(156 205 245 / 0.14)); color: #1c4e72 }
.tint-mint { background: linear-gradient(140deg, rgb(159 227 208 / 0.4), rgb(159 227 208 / 0.16)); color: #1d5c4c }
.tint-lilac { background: linear-gradient(140deg, rgb(195 182 240 / 0.4), rgb(195 182 240 / 0.16)); color: #47397f }
.tint-peach { background: linear-gradient(140deg, rgb(246 205 180 / 0.45), rgb(246 205 180 / 0.18)); color: #7d4522 }
.tint-rose { background: linear-gradient(140deg, rgb(246 178 190 / 0.4), rgb(246 178 190 / 0.16)); color: #7c2b3d }
.dark .tint-sky { background: linear-gradient(140deg, rgb(74 164 220 / 0.26), rgb(74 164 220 / 0.1)); color: #bfe2fb }
.dark .tint-mint { background: linear-gradient(140deg, rgb(88 201 173 / 0.26), rgb(88 201 173 / 0.1)); color: #bdf0e2 }
.dark .tint-lilac { background: linear-gradient(140deg, rgb(160 140 235 / 0.26), rgb(160 140 235 / 0.1)); color: #ddd5fb }
.dark .tint-peach { background: linear-gradient(140deg, rgb(230 160 118 / 0.26), rgb(230 160 118 / 0.1)); color: #fadfc9 }
.dark .tint-rose { background: linear-gradient(140deg, rgb(230 130 150 / 0.26), rgb(230 130 150 / 0.1)); color: #fbd5dd }
/* Sidebar surface: frosted navy glass with a real edge. */
.sidebar-surface {
@apply backdrop-blur-xl backdrop-saturate-150;
background: linear-gradient(
180deg,
color-mix(in oklab, var(--sidebar-top) 68%, transparent),
color-mix(in oklab, var(--sidebar-bottom) 68%, transparent)
);
border-right: 1px solid var(--sidebar-divider);
box-shadow: var(--sidebar-edge);
}
/* Sidebar nav rows */
.nav-row {
display: flex;
align-items: center;
gap: 0.625rem;
width: 100%;
border-radius: 0.625rem;
padding: 0.5rem 0.625rem;
font-size: 13.5px;
font-weight: 500;
color: var(--text-muted);
transition: background-color 140ms ease, color 140ms ease;
}
.nav-row:hover {
background: var(--hover);
color: var(--text);
}
.nav-row[aria-current="page"],
.nav-row[aria-pressed="true"] {
background: var(--surface-sunken);
color: var(--text);
}
/* Shared CTA language: the icon's blue, with a deeper fill in light mode. */
.btn-primary {
display: inline-flex;
align-items: center;
justify-content: center;
gap: 0.5rem;
border-radius: 999px;
background: #1d61ab;
color: #ffffff;
font-weight: 500;
box-shadow: 0 1px 2px rgb(14 21 40 / 0.22);
transition: background-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}
.btn-primary:hover { background: #2478d2; }
.btn-primary:active { transform: scale(0.985); }
.dark .btn-primary {
background: #59a8f7;
color: #081020;
box-shadow: none;
}
.dark .btn-primary:hover { background: #7bbaff; }
.btn-secondary {
display: inline-flex;
align-items: center;
justify-content: center;
gap: 0.5rem;
border-radius: 999px;
background: transparent;
color: var(--text);
border: 1px solid var(--hairline);
font-weight: 500;
transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}
.btn-secondary:hover { background: var(--hover); border-color: color-mix(in oklab, var(--hairline) 70%, var(--text) 12%); }
.btn-secondary:active { transform: scale(0.985); }
.btn-ghost {
display: inline-flex;
align-items: center;
justify-content: center;
gap: 0.5rem;
border-radius: 0.75rem;
background: transparent;
color: var(--text-muted);
font-weight: 500;
transition: background-color 160ms ease, color 160ms ease;
}
.btn-ghost:hover { background: var(--hover); color: var(--text); }
/* Difficulty: neutral pill, colour lives in the text only. */
.diff-easy { color: #16714f; }
.diff-medium { color: #7a5300; }
.diff-hard { color: #b4342f; }
.dark .diff-easy { color: #6fd3a8; }
.dark .diff-medium { color: #e3b341; }
.dark .diff-hard { color: #f08a84; }
/* Loading skeleton */
.skeleton {
position: relative;
overflow: hidden;
background: var(--surface-sunken);
border-radius: 0.75rem;
}
.skeleton::after {
content: "";
position: absolute;
inset: 0;
transform: translateX(-100%);
background: linear-gradient(90deg, transparent, rgb(255 255 255 / 0.45), transparent);
animation: shimmer 1.6s infinite;
}
.dark .skeleton::after {
background: linear-gradient(90deg, transparent, rgb(255 255 255 / 0.06), transparent);
}
@keyframes shimmer {
100% { transform: translateX(100%); }
}
.text-balance {
text-wrap: balance;
}
/* Focus rings ------------------------------------------------------------ */
:where(button, a, input, textarea, [tabindex]):focus-visible {
outline: 2.5px solid var(--color-accent-500);
outline-offset: 2px;
border-radius: 0.75rem;
}
/* Scrollbars ------------------------------------------------------------- */
.thin-scroll {
scrollbar-width: thin;
scrollbar-color: color-mix(in oklab, var(--color-frost-400) 55%, transparent) transparent;
}
.thin-scroll::-webkit-scrollbar { width: 8px; height: 8px }
.thin-scroll::-webkit-scrollbar-thumb {
background: color-mix(in oklab, var(--color-frost-400) 45%, transparent);
border-radius: 999px;
}
.no-scrollbar::-webkit-scrollbar { display: none }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none }
/* Mobile safe areas ------------------------------------------------------ */
.pt-safe { padding-top: max(env(safe-area-inset-top), 0.75rem) }
.pb-safe { padding-bottom: max(env(safe-area-inset-bottom), 0.75rem) }
.pb-tabbar { padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 5.25rem) }
.pb-cta { padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 9rem) }
@media (display-mode: standalone) {
.standalone-hide { display: none }
}
}
/* Mobile form fields ----------------------------------------------------- */
/* iOS Safari zooms the whole page when a focused field's text is under 16px
(it ignores user-scalable=no for that). Deliberately unlayered so it wins
over the per-component Tailwind sizes, and only on phone-sized screens. */
@media (max-width: 639px) {
input:not([type="checkbox"]):not([type="radio"]):not([type="range"]),
textarea,
select {
font-size: 16px;
}
}
/* Reduced motion --------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
*,
*::before,
*::after {
animation-duration: 0.001ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.001ms !important;
scroll-behavior: auto !important;
}
}