Martin Dvorak
67e2cefcfe
Frutiger Aero, closer to the mock: - The scene is water now: sun shafts through a bright surface, caustic patches, reeds on the left, a city silhouette on the right, and ten soap bubbles that actually rise (own keyframes, varied sizes/speeds/sway; the spans are display:none outside aero so they cost nothing elsewhere, and they sit still under reduced motion). - Pale blue glass at 0.8: still reads as glass, but dark navy text clears 4.5:1 over the water. The phone tab bar mixes the sheet glass instead of the page — in aero the page *is* the water, which left its labels at 3.9:1. - The aero page-level text (muted/subtle) is much darker for the same reason. - The PWA status bar follows the new water blue (#2fa7e6). The cookie notice is floating glass now (blurred backdrop, rim, shadow): as a plain card it read as part of the page background instead of a notice. Czech: "Tvoje mraznička" -> "Tvůj mrazák" (library title), test updated. Contrast: 0 below-minimum findings and 0 axe violations across every screen, all three themes. Version 0.2.1, SW -> freezmo-v55.
1199 lines
43 KiB
CSS
1199 lines
43 KiB
CSS
@import "tailwindcss";
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/* Class-based dark mode (toggled on <html> by the theme script). */
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@custom-variant dark (&:where(.dark, .dark *));
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@theme {
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/* Navy-tinted neutral scale — sampled from the app icon. ---------------- */
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--color-frost-50: #f5f8fd;
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--color-frost-100: #eaf0fa;
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--color-frost-200: #d9e3f3;
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--color-frost-300: #c2cfe4;
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--color-frost-400: #92a3c0;
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--color-frost-500: #6a7c9b;
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--color-frost-600: #4e5f7d;
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--color-frost-700: #3c4b66;
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--color-frost-800: #2b3752;
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--color-frost-900: #1d2740;
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--color-frost-950: #0e1526;
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/* Accent: glacier cyan to ice blue — focus rings, links, highlights. ---- */
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--color-accent-50: #ecf9ff;
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--color-accent-100: #d6f1ff;
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--color-accent-200: #b0e5ff;
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--color-accent-300: #7dd4fc;
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--color-accent-400: #38bdf8;
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--color-accent-500: #0ea5e9;
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--color-accent-600: #0284c7;
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--color-accent-700: #0369a1;
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--color-accent-800: #075985;
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--color-accent-900: #0c4a6e;
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/* Aurora hues used only for the frosted backdrop wash. ----------------- */
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--color-aurora-mint: #9fe3d0;
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--color-aurora-sky: #9ccdf5;
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--color-aurora-lilac: #c3b6f0;
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--color-aurora-peach: #f6cdb4;
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--font-sans: -apple-system, BlinkMacSystemFont, ui-sans-serif, system-ui,
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"Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif,
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"Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji";
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--shadow-frost: 0 14px 34px -22px rgb(13 13 13 / 0.28);
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--shadow-lift: 0 4px 14px -8px rgb(13 13 13 / 0.18);
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--shadow-hairline: 0 1px 0 0 rgb(13 13 13 / 0.04);
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--animate-float: float 11s ease-in-out infinite;
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--animate-pop: pop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
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--animate-wiggle: wiggle 0.4s ease-in-out;
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--animate-rise: rise 0.4s cubic-bezier(0.22, 1, 0.36, 1) both;
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--animate-sheet: sheet 0.32s cubic-bezier(0.22, 1, 0.36, 1) both;
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}
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@keyframes float {
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0%, 100% { transform: translate3d(0, 0, 0) scale(1) }
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50% { transform: translate3d(0, -18px, 0) scale(1.04) }
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}
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@keyframes pop {
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0% { transform: scale(0.92) }
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60% { transform: scale(1.02) }
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100% { transform: scale(1) }
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}
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@keyframes wiggle {
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0%, 100% { transform: translateX(0) }
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25% { transform: translateX(-5px) }
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75% { transform: translateX(5px) }
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}
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@keyframes rise {
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from { opacity: 0; transform: translateY(10px) }
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to { opacity: 1; transform: translateY(0) }
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}
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@keyframes sheet {
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from { opacity: 0; transform: translateY(24px) }
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to { opacity: 1; transform: translateY(0) }
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}
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/* ---------------------------------------------------------------------------
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Theme tokens.
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Light: ChatGPT-ish neutral (page #ffffff, sidebar #f9f9f9, border #e5e5e5).
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Dark: page #212121, sidebar #171717, surfaces #2f2f2f, borders rgba(255,255,255,.1).
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Text tiers are picked to clear WCAG AA (4.5:1) on their own background.
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--------------------------------------------------------------------------- */
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:root {
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color-scheme: light;
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--page: #eef5fd;
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--sidebar: #ffffff;
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--surface: #ffffff;
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--surface-raised: #ffffff;
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--surface-strong: rgb(255 255 255 / 0.72); /* nested glass: inputs, chips */
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--card-hover-bg: rgb(255 255 255 / 0.72);
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--surface-sunken: rgb(12 32 62 / 0.06);
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--hairline: #d5e4f4;
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--card-border: var(--glass-border);
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--sidebar-divider: rgb(255 255 255 / 0.75);
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--hairline-soft: rgb(12 32 62 / 0.08);
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--glass-tint: rgb(255 255 255 / 0.55);
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--text: #0b1830; /* 16.6:1 on #eef5fd */
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--text-muted: #40536b; /* 7.2:1 on light glass, 5.9:1 on sheet glass */
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--text-subtle: #566a84; /* 5.6:1 on light glass */
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--hover: rgb(12 32 62 / 0.05);
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--focus: #0ea5e9;
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/* Frosted ice glass — one shared recipe for every large surface. */
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--glass-bg: rgb(255 255 255 / 0.55);
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/* A cool rim instead of near-white: white-on-white made light-mode card
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edges invisible against the pale page. */
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--glass-border: rgb(143 174 212 / 0.55);
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--glass-highlight: rgb(255 255 255 / 0.85);
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--glass-shadow: 0 20px 50px -20px rgb(30 64 175 / 0.35);
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--glass-solid-bg: rgb(255 255 255 / 0.8); /* question card: more opaque */
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/* Sheet panels float over a dark scrim, so they need a more opaque surface
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than the cards: at 0.55 the muted text under it measured ~2.8:1. */
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--glass-sheet-bg: rgb(255 255 255 / 0.93);
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--glass-fallback: rgb(247 251 255 / 0.97); /* no backdrop-filter */
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--nav-active-bg: rgb(255 255 255 / 0.75);
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--nav-active-border: rgb(56 189 248 / 0.5);
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/* API-key gate: cool near-white stage with soft blue glows, tinted input. */
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--gate-card: rgb(255 255 255 / 0.62);
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--gate-callout-bg: rgb(255 255 255 / 0.55);
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--gate-callout-border: rgb(56 189 248 / 0.32);
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--field: rgb(255 255 255 / 0.66);
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--field-border: rgb(255 255 255 / 0.9);
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--shadow-gate: 0 28px 70px -36px rgb(14 21 40 / 0.3), 0 1px 2px rgb(14 21 40 / 0.05);
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/* Install sheet: light variant (dark is the default, see .dark). */
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--install-sheet: rgb(255 255 255 / 0.6);
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--install-card: rgb(255 255 255 / 0.7);
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--install-chip: rgb(255 255 255 / 0.55);
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--install-border: rgb(255 255 255 / 0.8);
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--shadow-card: 0 1px 2px rgb(14 21 40 / 0.06), 0 1px 3px rgb(14 21 40 / 0.04);
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--card-shadow: 0 1px 2px rgb(14 21 40 / 0.06), 0 9px 22px -8px rgb(14 21 40 / 0.16);
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--shadow-card-hover: 0 24px 60px -24px rgb(30 64 175 / 0.45), 0 2px 6px rgb(30 64 175 / 0.12);
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}
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.dark {
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color-scheme: dark;
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--page: #0a1120;
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--sidebar: #0b1524;
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--surface: #16233a;
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--surface-raised: #1d2c47;
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--surface-strong: rgb(255 255 255 / 0.08);
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--card-hover-bg: rgb(255 255 255 / 0.1);
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--surface-sunken: rgb(255 255 255 / 0.07);
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--hairline: rgb(255 255 255 / 0.12);
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--card-border: var(--glass-border);
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--sidebar-divider: rgb(255 255 255 / 0.12);
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--hairline-soft: rgb(255 255 255 / 0.08);
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--glass-tint: rgb(255 255 255 / 0.06);
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--text: #e8f0ff; /* 16.3:1 on #0a1120 */
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--text-muted: #b3c4e0; /* 10.1:1 */
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--text-subtle: #9db1d0; /* 8.6:1 on page, 7.2:1 on dark glass */
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--hover: rgb(255 255 255 / 0.07);
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--focus: #38bdf8;
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/* Frosted ice glass — dark: barely-there tint, brighter rim. */
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--glass-bg: rgb(255 255 255 / 0.06);
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--glass-border: rgb(255 255 255 / 0.12);
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--glass-highlight: rgb(255 255 255 / 0.25);
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--glass-shadow: 0 20px 50px -20px rgb(30 64 175 / 0.35);
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--glass-solid-bg: rgb(255 255 255 / 0.1);
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--glass-sheet-bg: rgb(17 27 46 / 0.94);
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--glass-fallback: rgb(16 26 45 / 0.97);
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--nav-active-bg: rgb(56 189 248 / 0.14);
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--nav-active-border: rgb(56 189 248 / 0.4);
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/* API-key gate: navy stage with the icon's blue glows, raised input. */
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--gate-card: rgb(255 255 255 / 0.06);
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--gate-callout-bg: rgb(255 255 255 / 0.06);
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--gate-callout-border: rgb(56 189 248 / 0.3);
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--field: rgb(255 255 255 / 0.07);
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--field-border: rgb(255 255 255 / 0.14);
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--shadow-gate: 0 30px 80px -40px rgb(0 0 0 / 0.85), 0 1px 2px rgb(0 0 0 / 0.4);
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/* Install sheet: layered dark surfaces (default theme for the sheet). */
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--install-sheet: rgb(255 255 255 / 0.06);
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--install-card: rgb(255 255 255 / 0.07);
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--install-chip: rgb(255 255 255 / 0.1);
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--install-border: rgb(255 255 255 / 0.14);
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--shadow-card: 0 1px 2px rgb(0 0 0 / 0.25);
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--card-shadow: var(--shadow-card);
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--shadow-card-hover: 0 24px 60px -24px rgb(30 64 175 / 0.55), 0 2px 8px rgb(0 0 0 / 0.3);
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}
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/* Ice scene tokens: the fixed layered background behind everything.
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The four glacier blobs are deliberately whisper-faint now: at 0.18/0.40
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they competed with the content (the "huge circles" read as part of the
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UI). 25% of the old values. */
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:root {
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--ice-base-top: #f4f9ff;
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--ice-base-bottom: #e6f1fb;
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--ice-blob-opacity: 0.045;
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--ice-orb-opacity: 0.34;
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--ice-grain-opacity: 0.05;
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}
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.dark {
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--ice-base-top: #070b16;
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--ice-base-bottom: #0c1426;
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--ice-blob-opacity: 0.1;
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--ice-orb-opacity: 0.5;
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--ice-grain-opacity: 0.045;
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}
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/* Frutiger Aero — the third theme (Settings → Theme). An underwater scene:
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sunlight shafts, caustic patches, reeds on the left, a city silhouette on
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the right and bubbles rising through it; glass is a pale blue with the
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classic horizon gloss. Token-driven like light/dark; the light/dark toggles
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hide while it is on (components/ThemeToggle.tsx). */
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.aero {
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color-scheme: light;
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--page: #1f86c9;
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--sidebar: #d6efff;
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--surface: #ffffff;
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--surface-raised: #ffffff;
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--surface-strong: rgb(255 255 255 / 0.72);
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--card-hover-bg: rgb(255 255 255 / 0.9);
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--surface-sunken: rgb(255 255 255 / 0.5);
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--hairline: rgb(255 255 255 / 0.75);
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--card-border: var(--glass-border);
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--sidebar-divider: rgb(255 255 255 / 0.65);
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--hairline-soft: rgb(255 255 255 / 0.55);
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--glass-tint: rgb(255 255 255 / 0.6);
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--text: #05203a; /* 10.9:1 on the aero glass */
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--text-muted: #0a2137; /* 11.5:1 on glass, 5.0:1 on the water */
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--text-subtle: #061726; /* 13.6:1 on glass, 5.5:1 on the water */
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/* A few components use the frost scale directly (hero descriptions, the
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wizard's step help): darker here, because they sit on the water. */
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--color-frost-600: #16324a;
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--color-frost-700: #102a41;
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--hover: rgb(255 255 255 / 0.45);
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--focus: #0369a1;
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/* Pale blue glass, like the mock: bright enough for dark navy text. */
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--glass-bg: rgb(228 246 255 / 0.8);
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--glass-border: rgb(255 255 255 / 0.9);
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--glass-highlight: rgb(255 255 255 / 0.98);
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--glass-shadow: 0 18px 44px -20px rgb(2 62 110 / 0.55);
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--glass-solid-bg: rgb(232 248 255 / 0.9);
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--glass-sheet-bg: rgb(232 246 255 / 0.94);
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--glass-fallback: rgb(226 242 253 / 0.97);
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--nav-active-bg: rgb(255 255 255 / 0.85);
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--nav-active-border: rgb(14 165 233 / 0.7);
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--gate-card: rgb(226 244 255 / 0.7);
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--gate-callout-bg: rgb(255 255 255 / 0.6);
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--gate-callout-border: rgb(56 189 248 / 0.45);
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--field: rgb(255 255 255 / 0.78);
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--field-border: rgb(255 255 255 / 0.95);
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--shadow-gate: 0 30px 70px -34px rgb(2 62 110 / 0.5), 0 1px 2px rgb(2 62 110 / 0.08);
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--install-sheet: rgb(226 244 255 / 0.7);
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--install-card: rgb(236 248 255 / 0.78);
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--install-chip: rgb(255 255 255 / 0.62);
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--install-border: rgb(255 255 255 / 0.88);
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--shadow-card: 0 2px 4px rgb(2 62 110 / 0.12), 0 14px 30px -16px rgb(2 62 110 / 0.4);
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--card-shadow: var(--shadow-card);
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--shadow-card-hover: 0 26px 60px -26px rgb(2 90 150 / 0.6), 0 3px 8px rgb(2 90 150 / 0.25);
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/* Scene tokens: the water itself is painted below. */
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--ice-base-top: #2fa7e6;
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--ice-base-bottom: #0a5490;
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--ice-blob-opacity: 0.5;
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--ice-orb-opacity: 0.6;
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--ice-grain-opacity: 0.02;
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}
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/* The water: sun shafts through a bright surface, deepening below. */
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.aero .ice-scene {
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background:
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repeating-linear-gradient(
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102deg,
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rgb(255 255 255 / 0) 0px,
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rgb(255 255 255 / 0.13) 46px,
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rgb(255 255 255 / 0) 104px
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),
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linear-gradient(180deg, #45b3ec 0%, #93daf9 26%, #d8f2ff 34%, #58b6e8 37%, #3f9ad4 66%, #2b86c4 100%);
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}
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/* The blobs are caustic light patches here, not glacier gradients. */
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.aero .ice-blob-a,
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.aero .ice-blob-b,
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.aero .ice-blob-c,
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.aero .ice-blob-d {
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background: radial-gradient(circle, rgb(255 255 255 / 0.85) 0%, rgb(191 240 255 / 0.5) 45%, transparent 74%);
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}
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/* The orbs are the big soap bubbles: a glassy rim with a bright specular. */
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.aero .ice-orb {
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background: radial-gradient(
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circle at 32% 28%,
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rgb(255 255 255 / 0.95) 0%,
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rgb(226 248 255 / 0.4) 22%,
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rgb(125 211 252 / 0.14) 56%,
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rgb(56 189 248 / 0.38) 100%
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);
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box-shadow: inset -8px -12px 20px -10px rgb(3 74 124 / 0.5), inset 8px 10px 16px -10px rgb(255 255 255 / 0.95), 0 12px 26px -16px rgb(3 74 124 / 0.55);
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}
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/* Reeds on the left, drawn on the scene's own pseudo-elements (the grain
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layer is at 2% opacity, so anything drawn on it is invisible). */
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.aero .ice-scene::before {
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content: "";
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position: absolute;
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left: -6vw;
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bottom: -4vh;
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width: 40vw;
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height: 52vh;
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opacity: 0.75;
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background:
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linear-gradient(74deg, transparent 40%, rgb(34 150 84 / 0.85) 40% 41.6%, transparent 41.6%),
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linear-gradient(84deg, transparent 58%, rgb(74 222 128 / 0.7) 58% 59.4%, transparent 59.4%),
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linear-gradient(64deg, transparent 22%, rgb(20 130 74 / 0.8) 22% 23.6%, transparent 23.6%),
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linear-gradient(92deg, transparent 70%, rgb(56 189 116 / 0.6) 70% 71.2%, transparent 71.2%),
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linear-gradient(52deg, transparent 8%, rgb(15 110 64 / 0.7) 8% 9.8%, transparent 9.8%);
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pointer-events: none;
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}
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/* A city silhouette on the right: a row of blocks of different heights,
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anchored to the water line and fading upward. */
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.aero .ice-scene::after {
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content: "";
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position: absolute;
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right: 3vw;
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bottom: 33vh;
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width: 36vw;
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height: 17vh;
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opacity: 0.38;
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background:
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linear-gradient(rgb(7 58 104 / 0.95), rgb(7 58 104 / 0.95)) 0% 100% / 9% 64% no-repeat,
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linear-gradient(rgb(7 58 104 / 0.95), rgb(7 58 104 / 0.95)) 12% 100% / 12% 100% no-repeat,
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linear-gradient(rgb(7 58 104 / 0.95), rgb(7 58 104 / 0.95)) 27% 100% / 8% 52% no-repeat,
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linear-gradient(rgb(7 58 104 / 0.95), rgb(7 58 104 / 0.95)) 38% 100% / 11% 78% no-repeat,
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linear-gradient(rgb(7 58 104 / 0.95), rgb(7 58 104 / 0.95)) 52% 100% / 7% 44% no-repeat,
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linear-gradient(rgb(7 58 104 / 0.95), rgb(7 58 104 / 0.95)) 62% 100% / 13% 88% no-repeat,
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linear-gradient(rgb(7 58 104 / 0.95), rgb(7 58 104 / 0.95)) 78% 100% / 9% 58% no-repeat,
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linear-gradient(rgb(7 58 104 / 0.95), rgb(7 58 104 / 0.95)) 90% 100% / 10% 72% no-repeat;
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mask-image: linear-gradient(180deg, rgb(0 0 0 / 0.9) 0%, rgb(0 0 0 / 0.45) 75%, transparent 100%);
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pointer-events: none;
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}
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/* The Aero gloss: the classic white top half with a horizon line. */
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.aero .card,
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.aero .glass-panel,
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.aero .sidebar-surface,
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.aero .study-chrome,
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.aero .tabbar,
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.aero .glass,
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.aero .gate-card {
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background-image: linear-gradient(
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180deg,
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rgb(255 255 255 / 0.75) 0%,
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rgb(255 255 255 / 0.3) 46%,
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rgb(255 255 255 / 0.06) 47%,
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rgb(255 255 255 / 0.24) 100%
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);
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}
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/* Rising bubbles. Hidden entirely in the other themes, so they cost nothing
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there; under reduced motion they sit still instead of rising. */
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.ice-bubble {
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display: none;
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}
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.aero .ice-bubble {
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display: block;
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position: absolute;
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bottom: -14vh;
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border-radius: 50%;
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opacity: 0;
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background: radial-gradient(
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circle at 32% 28%,
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rgb(255 255 255 / 0.95) 0%,
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|
rgb(226 248 255 / 0.38) 24%,
|
|
rgb(125 211 252 / 0.12) 58%,
|
|
rgb(56 189 248 / 0.34) 100%
|
|
);
|
|
box-shadow: inset -6px -10px 16px -8px rgb(3 74 124 / 0.45), inset 6px 8px 14px -8px rgb(255 255 255 / 0.9), 0 10px 22px -14px rgb(3 74 124 / 0.5);
|
|
animation: aero-bubble-rise var(--bubble-duration, 20s) linear infinite;
|
|
animation-delay: var(--bubble-delay, 0s);
|
|
will-change: transform, opacity;
|
|
}
|
|
.ice-paused .ice-bubble {
|
|
animation-play-state: paused;
|
|
}
|
|
|
|
@keyframes aero-bubble-rise {
|
|
0% { transform: translate3d(0, 0, 0) scale(0.85); opacity: 0; }
|
|
6% { opacity: var(--bubble-opacity, 0.9); }
|
|
50% { transform: translate3d(var(--bubble-sway, 3vw), -52vh, 0) scale(1); }
|
|
94% { opacity: var(--bubble-opacity, 0.9); }
|
|
100% { transform: translate3d(calc(var(--bubble-sway, 3vw) * -0.5), -104vh, 0) scale(1.06); opacity: 0; }
|
|
}
|
|
|
|
.aero .ice-bubble-1 { width: 104px; height: 104px; left: 7%; --bubble-duration: 19s; --bubble-delay: -2s; --bubble-sway: 4vw; }
|
|
.aero .ice-bubble-2 { width: 34px; height: 34px; left: 16%; --bubble-duration: 13s; --bubble-delay: -7s; --bubble-sway: -3vw; }
|
|
.aero .ice-bubble-3 { width: 64px; height: 64px; left: 28%; --bubble-duration: 22s; --bubble-delay: -12s; --bubble-sway: 3vw; }
|
|
.aero .ice-bubble-4 { width: 20px; height: 20px; left: 38%; --bubble-duration: 11s; --bubble-delay: -4s; --bubble-sway: 2vw; }
|
|
.aero .ice-bubble-5 { width: 88px; height: 88px; left: 48%; --bubble-duration: 25s; --bubble-delay: -16s; --bubble-sway: -4vw; }
|
|
.aero .ice-bubble-6 { width: 28px; height: 28px; left: 58%; --bubble-duration: 12s; --bubble-delay: -9s; --bubble-sway: 3vw; }
|
|
.aero .ice-bubble-7 { width: 72px; height: 72px; left: 68%; --bubble-duration: 20s; --bubble-delay: -5s; --bubble-sway: -2vw; }
|
|
.aero .ice-bubble-8 { width: 46px; height: 46px; left: 78%; --bubble-duration: 16s; --bubble-delay: -13s; --bubble-sway: 4vw; }
|
|
.aero .ice-bubble-9 { width: 24px; height: 24px; left: 87%; --bubble-duration: 14s; --bubble-delay: -6s; --bubble-sway: -3vw; }
|
|
.aero .ice-bubble-10 { width: 120px; height: 120px; left: 92%; --bubble-duration: 27s; --bubble-delay: -20s; --bubble-sway: -5vw; --bubble-opacity: 0.75; }
|
|
|
|
/* Glossy aqua primary buttons and segments. */
|
|
.aero .grad-ice,
|
|
.aero .btn-primary,
|
|
.aero .segmented > button[aria-pressed="true"],
|
|
.aero .segmented > a[aria-current="page"] {
|
|
background-image: linear-gradient(180deg, #a5e4ff 0%, #38bdf8 52%, #0ea5e9 53%, #0284c7 100%);
|
|
color: #052437;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/* A full-screen overlay (study feed, review/exam session, homework guide) is
|
|
transparent on purpose so the fixed ice scene stays visible — which also
|
|
means the app chrome of the page behind it would ghost through the glass.
|
|
While one is open, that chrome is hidden instead. */
|
|
body:has(.overlay-open) :is(.app-header, .segmented, .tabbar, .cookie-notice) {
|
|
visibility: hidden;
|
|
}
|
|
|
|
/* The key gate rides on the shared ice scene (see .ice-scene). */
|
|
|
|
/* The fixed ice scene: navy/pale base, drifting glacier blobs, glossy ice
|
|
orbs and a whisper of grain. Purely decorative. */
|
|
.ice-scene {
|
|
position: fixed;
|
|
inset: 0;
|
|
z-index: -1;
|
|
overflow: hidden;
|
|
pointer-events: none;
|
|
background: linear-gradient(180deg, var(--ice-base-top) 0%, var(--ice-base-bottom) 100%);
|
|
}
|
|
|
|
.ice-blob {
|
|
position: absolute;
|
|
border-radius: 50%;
|
|
opacity: var(--ice-blob-opacity);
|
|
will-change: transform;
|
|
/* No filter: blur() here on purpose. A radial gradient fading to
|
|
transparent is already a soft blob, and blurring a huge layer that is
|
|
also being animated forces a re-rasterisation every frame (measured
|
|
150ms vs 33ms per frame in a software renderer). The falloff stops below
|
|
keep the same softness. */
|
|
}
|
|
.ice-blob-a {
|
|
width: 52vw; height: 52vw; min-width: 24rem; min-height: 24rem;
|
|
top: -14vh; left: -10vw;
|
|
background: radial-gradient(circle, rgb(56 189 248 / 0.9) 0%, rgb(56 189 248 / 0.45) 38%, transparent 72%);
|
|
animation: ice-drift-a 44s ease-in-out infinite;
|
|
}
|
|
.ice-blob-b {
|
|
width: 46vw; height: 46vw; min-width: 22rem; min-height: 22rem;
|
|
top: 4vh; right: -12vw;
|
|
background: radial-gradient(circle, rgb(96 165 250 / 0.9) 0%, rgb(96 165 250 / 0.45) 38%, transparent 72%);
|
|
animation: ice-drift-b 52s ease-in-out infinite;
|
|
}
|
|
.ice-blob-c {
|
|
width: 48vw; height: 48vw; min-width: 22rem; min-height: 22rem;
|
|
bottom: -16vh; left: 14vw;
|
|
background: radial-gradient(circle, rgb(129 140 248 / 0.9) 0%, rgb(129 140 248 / 0.42) 38%, transparent 74%);
|
|
animation: ice-drift-c 60s ease-in-out infinite;
|
|
}
|
|
.ice-blob-d {
|
|
width: 34vw; height: 34vw; min-width: 16rem; min-height: 16rem;
|
|
bottom: 2vh; right: 6vw;
|
|
background: radial-gradient(circle, rgb(56 189 248 / 0.85) 0%, rgb(56 189 248 / 0.4) 38%, transparent 74%);
|
|
animation: ice-drift-a 48s ease-in-out infinite reverse;
|
|
}
|
|
|
|
@keyframes ice-drift-a {
|
|
0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
|
|
50% { transform: translate3d(4vw, 3vh, 0) scale(1.08); }
|
|
}
|
|
@keyframes ice-drift-b {
|
|
0%, 100% { transform: translate3d(0, 0, 0) scale(1.05); }
|
|
50% { transform: translate3d(-5vw, 4vh, 0) scale(1); }
|
|
}
|
|
@keyframes ice-drift-c {
|
|
0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
|
|
50% { transform: translate3d(3vw, -4vh, 0) scale(1.1); }
|
|
}
|
|
|
|
/* Glossy ice orbs: slow bubbles that rise from just below the bottom edge to
|
|
above the top edge, swaying gently and fading in/out near the edges so the
|
|
loop never pops. Only transform + opacity animate, each orb on its own
|
|
composited layer (will-change: transform): no filter/backdrop-filter, and no
|
|
animated size, offsets or shadow. Per-orb duration, delay (negative, so the
|
|
scene is already populated on load), horizontal position and sway keep them
|
|
out of sync. */
|
|
.ice-orb {
|
|
position: absolute;
|
|
top: 100%;
|
|
border-radius: 50%;
|
|
opacity: var(--ice-orb-opacity);
|
|
will-change: transform;
|
|
animation: ice-rise var(--ice-orb-duration, 48s) ease-in-out infinite;
|
|
animation-delay: var(--ice-orb-delay, 0s);
|
|
background: radial-gradient(
|
|
circle at 30% 25%,
|
|
rgb(255 255 255 / 0.95) 0%,
|
|
rgb(191 227 255 / 0.55) 18%,
|
|
rgb(96 165 250 / 0.35) 48%,
|
|
rgb(37 99 235 / 0.45) 100%
|
|
);
|
|
box-shadow: 0 18px 40px -18px rgb(30 64 175 / 0.55), inset 0 -8px 18px -10px rgb(30 64 175 / 0.6);
|
|
}
|
|
.ice-orb-1 { width: 190px; height: 190px; left: 12%; --ice-orb-duration: 46s; --ice-orb-delay: -18s; --ice-sway: 4vw; }
|
|
.ice-orb-2 { width: 84px; height: 84px; left: 4%; --ice-orb-duration: 58s; --ice-orb-delay: -41s; --ice-sway: -3vw; }
|
|
.ice-orb-3 { width: 220px; height: 220px; right: 10%; --ice-orb-duration: 36s; --ice-orb-delay: -7s; --ice-sway: 5vw; }
|
|
.ice-orb-4 { width: 52px; height: 52px; right: 28%; --ice-orb-duration: 64s; --ice-orb-delay: -52s; --ice-sway: -4vw; }
|
|
.ice-orb-5 { width: 120px; height: 120px; left: 38%; --ice-orb-duration: 52s; --ice-orb-delay: -27s; --ice-sway: 3vw; }
|
|
|
|
/* The rise: -100vh - 100% clears the top edge (100% = the orb's own height);
|
|
the sway crosses the path twice and the scale drifts slightly. Opacity
|
|
reaches the token value by 12% and holds it until 88%, so the fades happen
|
|
while the orb is still partly outside the scene. */
|
|
@keyframes ice-rise {
|
|
0% { transform: translate3d(0, 0, 0) scale(0.94); opacity: 0; }
|
|
12% { opacity: var(--ice-orb-opacity); }
|
|
32% { transform: translate3d(var(--ice-sway, 0px), calc(-32vh - 32%), 0) scale(0.97); }
|
|
58% { transform: translate3d(calc(var(--ice-sway, 0px) * -0.55), calc(-58vh - 58%), 0) scale(1.02); }
|
|
80% { transform: translate3d(calc(var(--ice-sway, 0px) * 0.4), calc(-80vh - 80%), 0) scale(1.04); }
|
|
88% { opacity: var(--ice-orb-opacity); }
|
|
100% { transform: translate3d(0, calc(-100vh - 100%), 0) scale(1.06); opacity: 0; }
|
|
}
|
|
|
|
/* Frosted grain over the whole scene. */
|
|
.ice-grain {
|
|
position: absolute;
|
|
inset: 0;
|
|
opacity: var(--ice-grain-opacity);
|
|
mix-blend-mode: overlay;
|
|
background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
|
|
}
|
|
|
|
@media (prefers-reduced-motion: reduce) {
|
|
.ice-blob { animation: none; }
|
|
/* Bubbles sit still (and visible) instead of rising. */
|
|
.aero .ice-bubble { animation: none; opacity: 0.55; transform: translate3d(0, -60vh, 0); }
|
|
/* Orbs go back to the pre-rise static layout (a paused animation is not
|
|
applied at all in Chrome, which would leave them parked below the fold)
|
|
and give their composited layers back. */
|
|
.ice-orb {
|
|
animation: none;
|
|
will-change: auto;
|
|
}
|
|
.ice-orb-1 { top: 14%; left: 12%; }
|
|
.ice-orb-2 { top: 58%; left: 4%; }
|
|
.ice-orb-3 { top: auto; bottom: -70px; right: 10%; }
|
|
.ice-orb-4 { top: 24%; right: 28%; }
|
|
.ice-orb-5 { top: auto; bottom: 16%; left: 38%; }
|
|
}
|
|
|
|
/* Background tab: park every scene animation, so an invisible page costs no
|
|
compositor work. */
|
|
.ice-paused .ice-orb,
|
|
.ice-paused .ice-blob {
|
|
animation-play-state: paused;
|
|
}
|
|
|
|
/* Phones: fewer, softer blobs so the drift animation stays cheap. Unlayered
|
|
on purpose — layered rules would lose to the .ice-blob declarations above. */
|
|
@media (max-width: 1023px) {
|
|
.ice-blob-c,
|
|
.ice-blob-d,
|
|
.ice-orb-4,
|
|
.ice-orb-5 {
|
|
display: none;
|
|
}
|
|
.ice-orb-1 { width: 120px; height: 120px; --ice-orb-duration: 54s; --ice-orb-delay: -21s; }
|
|
.ice-orb-2 { --ice-orb-duration: 64s; --ice-orb-delay: -46s; }
|
|
.ice-orb-3 { width: 150px; height: 150px; --ice-orb-duration: 44s; --ice-orb-delay: -8s; }
|
|
}
|
|
|
|
/* Phones: the decoration is already *behind* the content (the scene is a
|
|
fixed, pointer-events:none layer at z-index -1), but it shines through the
|
|
translucent page and glass, so it reads as overlap. Thin it right down,
|
|
tuck the orbs to the edges, away from the text column and the tab bar, and
|
|
slow their rise down further so the drifting slivers stay calm. */
|
|
@media (max-width: 639px) {
|
|
:root {
|
|
--ice-blob-opacity: 0.025;
|
|
--ice-orb-opacity: 0.2;
|
|
}
|
|
.dark {
|
|
--ice-blob-opacity: 0.05;
|
|
--ice-orb-opacity: 0.26;
|
|
}
|
|
/* Phones: orbs hug the screen edges so they can never sit under the
|
|
content column's cards or primary buttons. The lower-right orb still
|
|
read as a glow behind the wizard action bar, so phones drop it. */
|
|
.ice-orb-1 { width: 96px; height: 96px; left: -48px; --ice-orb-duration: 62s; --ice-orb-delay: -30s; --ice-sway: 5vw; }
|
|
.ice-orb-2 { width: 72px; height: 72px; left: -44px; --ice-orb-duration: 68s; --ice-orb-delay: -49s; --ice-sway: -4vw; }
|
|
.ice-orb-3 { display: none; }
|
|
}
|
|
|
|
@layer components {
|
|
/* Frosted ice glass ------------------------------------------------------
|
|
Two recipes now:
|
|
|
|
- **Floating glass** (sheets, dropdowns, dialogs and the sticky chrome):
|
|
the tint below plus a backdrop blur — the blur is what reads as glass
|
|
when content scrolls underneath (the app header, the study chrome, the
|
|
tab bar, a sheet over the page).
|
|
- **Static glass** (cards, the rail, the gate, the study prompt card): the
|
|
exact same tint, rim, highlight and shadow, but **no** backdrop-filter.
|
|
On a smooth gradient the blur is invisible — and because the ice scene
|
|
animates, every blurred surface re-runs the filter on every frame.
|
|
Measured on desktop (2x throttle, software renderer): p50 frame time
|
|
66ms while the static surfaces blurred the scene, 33ms without them,
|
|
17ms with the scene's animation also stopped.
|
|
|
|
Nested glass (chips, inputs) never adds a second blur layer. Tailwind's
|
|
backdrop utilities emit the -webkit- prefix too (hand-written
|
|
backdrop-filter gets minified to -webkit- only, which paints nothing). */
|
|
.glass-panel,
|
|
.card,
|
|
.sidebar-surface,
|
|
.study-chrome,
|
|
.tabbar,
|
|
.glass,
|
|
.gate-card {
|
|
background-color: var(--glass-bg);
|
|
box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-highlight);
|
|
}
|
|
|
|
/* Only the layers that can have content behind them blur. */
|
|
.glass-panel,
|
|
.study-chrome,
|
|
.tabbar,
|
|
.glass {
|
|
@apply backdrop-blur-lg backdrop-saturate-[1.4];
|
|
}
|
|
|
|
.glass-panel {
|
|
border: 1px solid var(--glass-border);
|
|
border-radius: 1.5rem;
|
|
}
|
|
|
|
/* Nested glass: slightly more opaque than its parent, no extra blur. */
|
|
.glass-chip {
|
|
background: var(--surface-sunken);
|
|
border: 1px solid var(--glass-border);
|
|
}
|
|
|
|
/* More opaque glass for the study question card, where text must stay crisp.
|
|
background-color (not the shorthand) so the Aero gloss can layer on top. */
|
|
.glass-solid {
|
|
background-color: var(--glass-solid-bg);
|
|
}
|
|
|
|
/* Sheets and dialogs sit over a scrim (and, on phones, over the page), so
|
|
their text needs a more opaque surface than the cards have. */
|
|
.glass-sheet {
|
|
background-color: var(--glass-sheet-bg);
|
|
}
|
|
.glass-chip:hover {
|
|
background: var(--hover);
|
|
}
|
|
|
|
.glass {
|
|
border-bottom: 1px solid var(--glass-border);
|
|
}
|
|
|
|
/* Study-feed chrome (progress header + bottom pager): the same neutral
|
|
surface as the cards, with a neutral border and shadow. */
|
|
.study-chrome {
|
|
border: 1px solid var(--glass-border);
|
|
}
|
|
|
|
.card {
|
|
border-radius: 1.5rem; /* 24px */
|
|
border: 1px solid var(--glass-border);
|
|
}
|
|
|
|
.gate-card {
|
|
border: 1px solid var(--glass-border);
|
|
border-radius: 1.75rem; /* 28px */
|
|
}
|
|
|
|
/* Blur is expensive: halve it on phones (floating glass only). */
|
|
@media (max-width: 1023px) {
|
|
.glass-panel,
|
|
.study-chrome,
|
|
.tabbar,
|
|
.glass {
|
|
@apply backdrop-blur-md;
|
|
}
|
|
}
|
|
|
|
/* No backdrop-filter support: fall back to a more opaque surface (floating
|
|
glass only — the static surfaces already look right without a filter). */
|
|
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
|
|
.glass-panel,
|
|
.study-chrome,
|
|
.tabbar,
|
|
.glass {
|
|
background-color: var(--glass-fallback);
|
|
}
|
|
}
|
|
|
|
/* 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: var(--nav-active-border);
|
|
box-shadow: var(--shadow-card-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) 82%, 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-image: linear-gradient(135deg, #38bdf8 0%, #60a5fa 100%);
|
|
color: #06111f;
|
|
box-shadow: 0 6px 16px -8px rgb(56 189 248 / 0.7);
|
|
}
|
|
.dark .segmented > button[aria-pressed="true"],
|
|
.dark .segmented > button[aria-checked="true"] {
|
|
background-image: linear-gradient(135deg, #38bdf8 0%, #60a5fa 100%);
|
|
color: #06111f;
|
|
}
|
|
/* Link segments (library tabs): same control, but links navigate. */
|
|
.segmented > a {
|
|
flex: 1;
|
|
display: inline-flex;
|
|
align-items: center;
|
|
justify-content: center;
|
|
gap: 0.375rem;
|
|
min-height: 2.75rem;
|
|
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 > a {
|
|
color: var(--color-frost-300);
|
|
}
|
|
.segmented > a[aria-current="page"] {
|
|
background-image: linear-gradient(135deg, #38bdf8 0%, #60a5fa 100%);
|
|
color: #06111f;
|
|
box-shadow: 0 6px 16px -8px rgb(56 189 248 / 0.7);
|
|
}
|
|
|
|
/* Ice gradient for progress bars and selected states. */
|
|
.grad-ice {
|
|
background-image: linear-gradient(90deg, #38bdf8 0%, #60a5fa 100%);
|
|
}
|
|
|
|
/* Sheet grabber --------------------------------------------------------- */
|
|
.sheet-grabber {
|
|
width: 36px;
|
|
height: 5px;
|
|
border-radius: 999px;
|
|
background: var(--hairline-soft);
|
|
margin: 0 auto 0.75rem;
|
|
}
|
|
|
|
.tabbar {
|
|
border-top: 1px solid var(--glass-border);
|
|
}
|
|
/* Phones: the tab bar sits over the bottom of the ice scene, so give the
|
|
labels a calmer surface than the barely-there shared glass tint. */
|
|
@media (max-width: 639px) {
|
|
.tabbar {
|
|
background: color-mix(in oklab, var(--page) 84%, transparent);
|
|
}
|
|
/* Aero's page is the water itself, so mixing it would leave a saturated
|
|
blue bar under dark labels (measured ~3.9:1). Mix the pale sheet glass. */
|
|
.aero .tabbar {
|
|
background: color-mix(in oklab, var(--glass-sheet-bg) 84%, transparent);
|
|
}
|
|
}
|
|
|
|
/* 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: one tall inset glass panel. */
|
|
.sidebar-surface {
|
|
border: 1px solid var(--glass-border);
|
|
border-radius: 1.5rem;
|
|
}
|
|
|
|
/* 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);
|
|
}
|
|
|
|
/* The rail's two creation actions ("New deck", "New homework") are buttons,
|
|
not nav rows: once the library is full the empty-state CTAs are long gone,
|
|
and on desktop the rail is the only place left to start something. */
|
|
.nav-action {
|
|
display: flex;
|
|
align-items: center;
|
|
gap: 0.625rem;
|
|
width: 100%;
|
|
border-radius: 0.75rem;
|
|
padding: 0.5rem 0.625rem;
|
|
font-size: 13.5px;
|
|
font-weight: 600;
|
|
color: var(--text);
|
|
background: var(--surface-strong);
|
|
border: 1px solid var(--glass-border);
|
|
transition: background-color 160ms ease, border-color 160ms ease;
|
|
}
|
|
.nav-action:hover {
|
|
background: var(--hover);
|
|
border-color: var(--nav-active-border);
|
|
}
|
|
.nav-row[aria-current="page"],
|
|
.nav-row[aria-pressed="true"] {
|
|
background: var(--nav-active-bg);
|
|
color: var(--text);
|
|
box-shadow: inset 0 0 0 1px var(--nav-active-border), inset 0 1px 0 var(--glass-highlight);
|
|
}
|
|
|
|
/* Shared CTA language: one ice gradient in *both* themes (it mirrors the
|
|
segmented control, the progress bars and the tab-bar plus). #06111f on
|
|
#38bdf8 is ~8.8:1, so the dark label clears AA everywhere on the ramp. */
|
|
.btn-primary {
|
|
display: inline-flex;
|
|
align-items: center;
|
|
justify-content: center;
|
|
gap: 0.5rem;
|
|
border-radius: 14px;
|
|
background-image: linear-gradient(135deg, #38bdf8 0%, #60a5fa 100%);
|
|
color: #06111f;
|
|
font-weight: 600;
|
|
box-shadow: 0 10px 24px -14px rgb(14 165 233 / 0.75);
|
|
transition: box-shadow 180ms ease, filter 180ms ease, transform 160ms ease;
|
|
}
|
|
.btn-primary:hover {
|
|
filter: brightness(1.06);
|
|
box-shadow: 0 14px 32px -14px rgb(56 189 248 / 0.9);
|
|
}
|
|
.btn-primary:active { transform: scale(0.985); }
|
|
|
|
/* Disabled: a real, visible chip instead of a 40%-opacity ghost. Important
|
|
declarations deliberately live in this (earlier) layer so they beat the
|
|
important rose/emerald overrides of the danger/success variants. */
|
|
.btn-disabled {
|
|
background-image: none !important;
|
|
background-color: var(--surface-sunken) !important;
|
|
color: var(--text-subtle) !important;
|
|
box-shadow: none !important;
|
|
filter: none !important;
|
|
transform: none !important;
|
|
cursor: not-allowed;
|
|
}
|
|
|
|
.btn-secondary {
|
|
display: inline-flex;
|
|
align-items: center;
|
|
justify-content: center;
|
|
gap: 0.5rem;
|
|
border-radius: 14px;
|
|
background: var(--surface-strong);
|
|
color: var(--text);
|
|
border: 1px solid var(--glass-border);
|
|
font-weight: 500;
|
|
transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
|
|
}
|
|
.btn-secondary:hover {
|
|
background: var(--hover);
|
|
border-color: var(--nav-active-border);
|
|
}
|
|
.btn-secondary:active { transform: scale(0.985); }
|
|
|
|
.btn-ghost {
|
|
display: inline-flex;
|
|
align-items: center;
|
|
justify-content: center;
|
|
gap: 0.5rem;
|
|
border-radius: 14px;
|
|
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) }
|
|
|
|
/* ---------------------------------------------------------------------------
|
|
Mobile animation foundation (≤639px / coarse pointers).
|
|
Press feedback is CSS so every button, chip, card, tab and row gets the
|
|
same instant response without wiring each component. The springy release is
|
|
a spring-like cubic-bezier on transform only; reduced motion drops it.
|
|
--------------------------------------------------------------------------- */
|
|
@media (max-width: 639px), (pointer: coarse) {
|
|
.press,
|
|
.btn-primary,
|
|
.btn-secondary,
|
|
.btn-ghost,
|
|
.card-hover,
|
|
.nav-row,
|
|
.folder-pill,
|
|
.segmented > button,
|
|
.segmented > a,
|
|
.tabbar a,
|
|
.tabbar button,
|
|
summary {
|
|
transition:
|
|
transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1),
|
|
background-color 0.16s ease,
|
|
color 0.16s ease,
|
|
border-color 0.16s ease,
|
|
box-shadow 0.16s ease;
|
|
touch-action: manipulation;
|
|
-webkit-tap-highlight-color: transparent;
|
|
}
|
|
.press:active,
|
|
.btn-primary:active,
|
|
.btn-secondary:active,
|
|
.btn-ghost:active,
|
|
.card-hover:active,
|
|
.nav-row:active,
|
|
.folder-pill:active,
|
|
.segmented > button:active,
|
|
.segmented > a:active,
|
|
.tabbar a:active,
|
|
.tabbar button:active {
|
|
transform: scale(0.96);
|
|
}
|
|
/* UI chrome is not selectable; content text stays selectable. */
|
|
.btn-primary,
|
|
.btn-secondary,
|
|
.btn-ghost,
|
|
.nav-row,
|
|
.folder-pill,
|
|
.segmented,
|
|
.tabbar,
|
|
.study-chrome,
|
|
summary,
|
|
.press {
|
|
-webkit-user-select: none;
|
|
user-select: none;
|
|
-webkit-touch-callout: none;
|
|
}
|
|
}
|
|
@media (prefers-reduced-motion: reduce) {
|
|
.press:active,
|
|
.btn-primary:active,
|
|
.btn-secondary:active,
|
|
.btn-ghost:active,
|
|
.card-hover:active,
|
|
.nav-row:active,
|
|
.folder-pill:active,
|
|
.segmented > button:active,
|
|
.segmented > a:active,
|
|
.tabbar a:active,
|
|
.tabbar button:active {
|
|
transform: none;
|
|
}
|
|
}
|
|
|
|
/* Sliding segmented highlight: when a control carries the shared layout
|
|
pill, the item itself goes transparent so the pill can glide between
|
|
items. (Unlayered, like the rules above, so it wins over them.) */
|
|
.segmented > .seg-slide[aria-current="page"],
|
|
.segmented > .seg-slide[aria-pressed="true"],
|
|
.segmented > .seg-slide[aria-checked="true"] {
|
|
background-image: none;
|
|
box-shadow: none;
|
|
}
|
|
.segmented > .seg-slide[aria-current="page"] > .seg-label,
|
|
.segmented > .seg-slide[aria-pressed="true"] > .seg-label,
|
|
.segmented > .seg-slide[aria-checked="true"] > .seg-label {
|
|
color: #06111f;
|
|
}
|
|
.dark .segmented > .seg-slide > .seg-label {
|
|
color: var(--color-frost-300);
|
|
}
|
|
.dark .segmented > .seg-slide[aria-current="page"] > .seg-label,
|
|
.dark .segmented > .seg-slide[aria-pressed="true"] > .seg-label,
|
|
.dark .segmented > .seg-slide[aria-checked="true"] > .seg-label {
|
|
color: #06111f;
|
|
}
|
|
|
|
/* Shared sliding pill for non-segmented pickers (difficulty, size). */
|
|
.slide-pill {
|
|
position: absolute;
|
|
inset: 0;
|
|
border-radius: inherit;
|
|
pointer-events: none;
|
|
}
|
|
|
|
/* App launch: one quick fade of the shell, no layout shift. */
|
|
@keyframes app-in {
|
|
from { opacity: 0 }
|
|
to { opacity: 1 }
|
|
}
|
|
.app-shell-in { animation: app-in 0.28s ease-out both; }
|
|
@media (prefers-reduced-motion: reduce) {
|
|
.app-shell-in { animation: none; }
|
|
}
|
|
|
|
/* Phones: a quick fade when the study feed takes over (the generation
|
|
hand-off), so the result doesn't hard-cut in. */
|
|
@media (max-width: 639px) {
|
|
.fade-in-mobile { animation: app-in 0.28s ease-out both; }
|
|
}
|
|
@media (max-width: 639px) and (prefers-reduced-motion: reduce) {
|
|
.fade-in-mobile { animation: none; }
|
|
}
|
|
|
|
@media (display-mode: standalone) {
|
|
.standalone-hide { display: none }
|
|
}
|
|
|
|
/* Phones: Apple's 44px minimum for touch targets. The class is a no-op on
|
|
desktop (and on tablets), so components can carry it unconditionally. */
|
|
@media (max-width: 639px) {
|
|
.touch-target { min-height: 44px; min-width: 44px; }
|
|
.nav-row { min-height: 44px; }
|
|
.segmented > button { min-height: 44px; }
|
|
.folder-pill { min-height: 44px; }
|
|
}
|
|
|
|
/* Settings sheet: contained momentum scrolling; the safe-area padding comes
|
|
from the pb-safe utility plus a trailing spacer. The mask fades the last
|
|
36px of *content* (not a coloured overlay, so it blends with the glass in
|
|
both themes) — that is the scroll cue; the trailing spacer keeps real
|
|
content out of the faded strip once you reach the bottom. */
|
|
.sheet-scroll {
|
|
overscroll-behavior: contain;
|
|
-webkit-overflow-scrolling: touch;
|
|
-webkit-mask-image: linear-gradient(to bottom, #000 calc(100% - 36px), transparent);
|
|
mask-image: linear-gradient(to bottom, #000 calc(100% - 36px), transparent);
|
|
}
|
|
}
|
|
|
|
/* 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;
|
|
}
|
|
}
|