/* ==========================================================================
   TKCH v2 — design tokens ("Signal Studio")
   Owner: Claude 1. Every section picks a theme with [data-theme]; components
   only read the semantic variables (--bg, --fg, --accent …), never raw colours.
   ========================================================================== */

/* ---------- Fonts (self-hosted, OFL) ---------- */
@font-face {
  font-family: "Schibsted Grotesk";
  font-style: normal;
  font-display: swap;
  font-weight: 400 900;
  src: url("../fonts/schibsted-grotesk-latin-ext-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Schibsted Grotesk";
  font-style: normal;
  font-display: swap;
  font-weight: 400 900;
  src: url("../fonts/schibsted-grotesk-latin-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-display: swap;
  font-weight: 400;
  src: url("../fonts/ibm-plex-mono-latin-ext-400-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-display: swap;
  font-weight: 400;
  src: url("../fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-display: swap;
  font-weight: 500;
  src: url("../fonts/ibm-plex-mono-latin-ext-500-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-display: swap;
  font-weight: 500;
  src: url("../fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  color-scheme: dark;

  /* ---- Palette (raw) ---- */
  --c-ink: #08090d;
  --c-ink-2: #11131a;
  --c-ink-3: #1a1d26;
  --c-paper: #f3efe7;
  --c-paper-2: #e8e2d6;
  --c-paper-3: #d9d1c2;
  --c-text-on-paper: #0b0c10;
  --c-text-on-ink: #f4f1ea;

  --c-signal: #ff5b1f;           /* TKCH */
  --c-signal-deep: #e2470e;
  --c-cobalt: #2e63ff;           /* RelayDen (#2563ff family) */
  --c-cobalt-soft: #7ea2ff;
  --c-plum: #1b1022;             /* LOLSKINSFORUS */
  --c-gold: #e7b34b;
  --c-probe: #0e1a1d;            /* Firefox Session MCP */
  --c-cyan: #2ce0c2;
  --c-archive-red: #c8233a;      /* SygnalistaFB */
  --c-reel: #0f0d0b;             /* OpusLokalny */
  --c-mint: #5fe3a1;             /* OpusLokalny UI accent (from the app) */

  --spectrum: linear-gradient(90deg, #c985ff, #7c5cff, #2563ff, #25c9f5, #5ef2c5);

  /* Delivery states — RelayDen vocabulary */
  --st-queued: #8f96a3;
  --st-sending: #e3b341;
  --st-accepted: #5b97ff;
  --st-received: #3fc98a;
  --st-failed: #ff6b5e;

  /* ---- Type ---- */
  --sans: "Schibsted Grotesk", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1.0625rem;
  --fs-md: clamp(1.125rem, 1.02rem + 0.45vw, 1.375rem);
  --fs-lg: clamp(1.375rem, 1.1rem + 1.1vw, 2rem);
  --fs-xl: clamp(2rem, 1.3rem + 2.8vw, 3.75rem);
  --fs-2xl: clamp(2.75rem, 1.4rem + 5.4vw, 6.5rem);
  --fs-display: clamp(3.5rem, 0.8rem + 11vw, 13rem);

  --lh-tight: 0.92;
  --track-display: -0.05em;
  --track-head: -0.03em;

  /* ---- Space & layout ---- */
  --gutter: clamp(16px, 4vw, 56px);
  --maxw: 1440px;
  --maxw-text: 64ch;
  --header-h: 68px;
  --section-y: clamp(4rem, 2.5rem + 5vw, 7.5rem);

  --radius-s: 6px;
  --radius: 10px;
  --radius-window: 14px;

  /* ---- Motion ---- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-s: 0.25s;
  --dur-m: 0.6s;
  --dur-l: 0.9s;

  /* ---- Default theme (ink) ---- */
  --bg: var(--c-ink);
  --surface: var(--c-ink-2);
  --surface-2: var(--c-ink-3);
  --fg: var(--c-text-on-ink);
  --fg-muted: rgb(244 241 234 / 0.68);
  --line: rgb(244 241 234 / 0.12);
  --accent: var(--c-signal);
  --accent-fg: #160700;
  --glow: rgb(46 99 255 / 0.28);
  --shadow-window: 0 1px 0 rgb(255 255 255 / 0.06) inset, 0 40px 80px -30px rgb(0 0 0 / 0.75), 0 18px 36px -18px rgb(0 0 0 / 0.6);
}

/* ---------- Section themes ---------- */
[data-theme="ink"] {
  color-scheme: dark;
  --bg: var(--c-ink);
  --surface: var(--c-ink-2);
  --surface-2: var(--c-ink-3);
  --fg: var(--c-text-on-ink);
  --fg-muted: rgb(244 241 234 / 0.68);
  --line: rgb(244 241 234 / 0.12);
  --accent: var(--c-signal);
  --accent-fg: #160700;
  --glow: rgb(255 91 31 / 0.22);
}

[data-theme="paper"] {
  color-scheme: light;
  --bg: var(--c-paper);
  --surface: #fffdf8;
  --surface-2: var(--c-paper-2);
  --fg: var(--c-text-on-paper);
  --fg-muted: rgb(11 12 16 / 0.7);
  --line: rgb(11 12 16 / 0.14);
  --accent: #b83506;            /* signal darkened for 4.5:1 as text and under white text */
  --accent-fg: #fff;
  --glow: rgb(255 91 31 / 0.16);
  --shadow-window: 0 1px 0 rgb(255 255 255 / 0.7) inset, 0 40px 70px -34px rgb(60 40 20 / 0.38), 0 14px 28px -16px rgb(60 40 20 / 0.28);
}

[data-theme="signal"] {
  color-scheme: light;
  --bg: var(--c-signal);
  --surface: #ff7440;
  --surface-2: #ff8a5c;
  --fg: #120600;
  --fg-muted: rgb(18 6 0 / 0.74);
  --line: rgb(18 6 0 / 0.2);
  --accent: #120600;
  --accent-fg: var(--c-signal);
  --glow: rgb(255 255 255 / 0.25);
}

[data-theme="relay"] {
  color-scheme: dark;
  --bg: #05070f;
  --surface: #0c1224;
  --surface-2: #121a33;
  --fg: #eef2ff;
  --fg-muted: rgb(238 242 255 / 0.7);
  --line: rgb(126 162 255 / 0.18);
  --accent: var(--c-cobalt-soft);
  --accent-fg: #020815;
  --glow: rgb(46 99 255 / 0.4);
}

[data-theme="deck"] {
  color-scheme: dark;
  --bg: var(--c-plum);
  --surface: #261632;
  --surface-2: #311d40;
  --fg: #f7efe3;
  --fg-muted: rgb(247 239 227 / 0.7);
  --line: rgb(231 179 75 / 0.2);
  --accent: var(--c-gold);
  --accent-fg: #1b1022;
  --glow: rgb(214 67 160 / 0.32);
}

[data-theme="probe"] {
  color-scheme: dark;
  --bg: var(--c-probe);
  --surface: #13252a;
  --surface-2: #19313a;
  --fg: #e8f6f3;
  --fg-muted: rgb(232 246 243 / 0.7);
  --line: rgb(44 224 194 / 0.18);
  --accent: var(--c-cyan);
  --accent-fg: #03201b;
  --glow: rgb(44 224 194 / 0.22);
}

[data-theme="archive"] {
  color-scheme: light;
  --bg: var(--c-paper);
  --surface: #fffdf8;
  --surface-2: var(--c-paper-2);
  --fg: var(--c-text-on-paper);
  --fg-muted: rgb(11 12 16 / 0.7);
  --line: rgb(11 12 16 / 0.14);
  --accent: var(--c-archive-red);
  --accent-fg: #fff;
  --glow: rgb(200 35 58 / 0.12);
  --shadow-window: 0 1px 0 rgb(255 255 255 / 0.7) inset, 0 40px 70px -34px rgb(60 40 20 / 0.38), 0 14px 28px -16px rgb(60 40 20 / 0.28);
}

[data-theme="reel"] {
  color-scheme: dark;
  --bg: var(--c-reel);
  --surface: #1a1612;
  --surface-2: #241e18;
  --fg: #f6f0e6;
  --fg-muted: rgb(246 240 230 / 0.7);
  --line: rgb(246 240 230 / 0.13);
  --accent: var(--c-mint);
  --accent-fg: #04170d;
  --glow: rgb(95 227 161 / 0.2);
}