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Straight ice: flat backdrop, crisp translucent panels, barely any gradients

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The colourful multi-blob wash was too much and still didn't read as
frosted glass. Replaced with a cleaner material approach:

- Backdrop is now flat with a single faint top highlight (the only
  gradient left in it); the animated blobs and the four colour radials
  are gone.
- Panels are crisper and more translucent: cards 62%, panels 66%,
  sidebar 64% (now flat, no vertical gradient), study chrome 68%, tab
  bar 70% — with a bright 1px edge (--glass-edge), a light-from-above
  sheen (--glass-sheen) and the inset top highlight.
- Light mode is lighter: page #eef3fa pale ice, sidebar and cards
  frosted white; dark mode is a flatter, slightly lighter navy
  (#121a2c page, #1a2337 surfaces).
- Key-gate glows toned right down to match.

Contrast re-audited against the effective frosted backgrounds: 21/21 AA.
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.
This commit is contained in:
Martin Dvořák 2026-10-08 09:20:22 +00:00
commit 5d0559212b
2 changed files with 84 additions and 123 deletions
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177
app/globals.css
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@ -81,30 +81,30 @@
--------------------------------------------------------------------------- */
:root {
color-scheme: light;
--page: #f4f7fd;
--sidebar: #e9eff9;
--page: #eef3fa; /* pale ice */
--sidebar: #ffffff;
--surface: #ffffff;
--surface-raised: #ffffff;
--surface-strong: #edf2fa;
--card-hover-bg: #f7faff;
--surface-strong: #f2f6fc;
--card-hover-bg: #ffffff;
--surface-sunken: rgb(14 21 40 / 0.05);
--hairline: #dce4f1;
--card-border: #d7e0ef;
--sidebar-divider: #d7e0ef;
--card-border: rgb(255 255 255 / 0.85);
--sidebar-divider: #dfe7f3;
--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 */
--glass-tint: rgb(255 255 255 / 0.6);
--glass-top: rgb(255 255 255 / 0.95);
--glass-edge: rgb(255 255 255 / 0.85);
--glass-sheen: rgb(255 255 255 / 0.55);
--text: #0e1526; /* 16.2:1 on #eef3fa */
--text-muted: #4d5c78; /* 6.1:1 */
--text-subtle: #55647f; /* 5.4:1 */
--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);
--sidebar-edge: 0 1px 0 var(--sidebar-divider), 6px 0 18px -12px rgb(14 21 40 / 0.18);
/* 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-base: #eef3fa;
--gate-glow-a: rgb(90 150 240 / 0.16);
--gate-glow-b: rgb(140 150 240 / 0.12);
--gate-card: #ffffff;
--gate-card-border: #dde5f2;
--gate-callout-bg: #eef3fa;
@ -118,36 +118,39 @@
--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);
--card-shadow: 0 0 0 1px rgb(14 21 40 / 0.04), 0 1px 2px rgb(14 21 40 / 0.04), 0 12px 28px -14px rgb(14 21 40 / 0.2);
--shadow-card-hover: 0 0 0 1px rgb(14 21 40 / 0.05), 0 16px 36px -14px rgb(14 21 40 / 0.24), 0 2px 6px rgb(14 21 40 / 0.07);
/* Backdrop: flat ice with a single faint highlight at the top. */
--bd-base: #eef3fa;
--bd-highlight: rgb(255 255 255 / 0.9);
}
.dark {
color-scheme: dark;
--page: #0e1424;
--sidebar: #0a0f1c;
--surface: #171f33;
--surface-raised: #1e2740;
--surface-strong: #202a42;
--card-hover-bg: #1e2740;
--page: #121a2c;
--sidebar: #0c1322;
--surface: #1a2337;
--surface-raised: #222c44;
--surface-strong: #222c44;
--card-hover-bg: #222c44;
--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);
--hairline: rgb(255 255 255 / 0.1);
--card-border: rgb(255 255 255 / 0.1);
--sidebar-divider: rgb(255 255 255 / 0.08);
--hairline-soft: rgb(255 255 255 / 0.07);
--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 */
--glass-top: rgb(255 255 255 / 0.09);
--glass-edge: rgb(255 255 255 / 0.1);
--glass-sheen: rgb(255 255 255 / 0.05);
--text: #e9eefb; /* 14.8:1 on #121a2c */
--text-muted: #b7c3dc; /* 10.0:1 */
--text-subtle: #94a4c2; /* 7.0:1 */
--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);
--sidebar-edge: 0 1px 0 var(--hairline), 6px 0 16px -14px rgb(0 0 0 / 0.7);
/* 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-base: #0c1322;
--gate-glow-a: rgb(70 140 235 / 0.14);
--gate-glow-b: rgb(120 120 235 / 0.1);
--gate-card: #131a2c;
--gate-card-border: rgb(255 255 255 / 0.1);
--gate-callout-bg: rgb(255 255 255 / 0.06);
@ -163,25 +166,8 @@
--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;
--bd-base: #101a2c;
--bd-highlight: rgb(120 160 220 / 0.12);
}
html,
@ -247,54 +233,21 @@ body {
z-index: -10;
overflow: hidden;
pointer-events: none;
/* Flat ice with one faint highlight at the top — just enough for the
frosted surfaces to have something to catch. */
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;
radial-gradient(120vw 54vh at 50% -16%, var(--bd-highlight) 0%, transparent 72%),
var(--bd-base);
}
@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);
background:
linear-gradient(180deg, var(--glass-sheen) 0%, transparent 46%),
color-mix(in oklab, var(--surface) 66%, transparent);
border: 1px solid var(--glass-edge);
box-shadow: var(--shadow-card), inset 0 1px 0 var(--glass-top);
}
@ -319,7 +272,9 @@ body {
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);
background:
linear-gradient(180deg, var(--glass-sheen) 0%, transparent 46%),
color-mix(in oklab, var(--surface) 68%, transparent);
border: 1px solid var(--hairline);
box-shadow: var(--shadow-card);
}
@ -330,10 +285,16 @@ body {
.card {
border-radius: 1.125rem; /* 18px */
@apply backdrop-blur-xl backdrop-saturate-150;
background: color-mix(in oklab, var(--surface) 62%, transparent);
background:
linear-gradient(180deg, var(--glass-sheen) 0%, transparent 46%),
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);
}
.dark .card,
.dark .glass-panel {
border-color: var(--glass-edge);
}
/* Opt-in hover lift for interactive cards (deck cards). Pointer devices only,
so touch screens never get sticky hover states. */
@ -358,7 +319,7 @@ body {
.list-group {
border-radius: 1rem;
@apply backdrop-blur-lg backdrop-saturate-150;
background: color-mix(in oklab, var(--surface) 70%, transparent);
background: color-mix(in oklab, var(--surface) 66%, transparent);
border: 1px solid var(--hairline);
overflow: hidden;
}
@ -411,7 +372,7 @@ body {
.tabbar {
@apply backdrop-blur-xl;
background: color-mix(in oklab, var(--page) 74%, transparent);
background: color-mix(in oklab, var(--page) 70%, transparent);
border-top: 1px solid var(--hairline);
}
@ -427,14 +388,12 @@ body {
.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: flat frosted 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)
);
background:
linear-gradient(180deg, var(--glass-sheen) 0%, transparent 30%),
color-mix(in oklab, var(--sidebar) 64%, transparent);
border-right: 1px solid var(--sidebar-divider);
box-shadow: var(--sidebar-edge);
}