/* Nocturne — design-system tokens and component classes. This file is the source of truth for the system's look; retune it here and see readme.md. */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/*
  THEME MODEL — HC-HUMAN-USE-1 additive pass.

  `color-scheme` marks both themes as genuinely supported (form controls,
  scrollbars). Precedence, low to high:
    1. `:root` — the dark values, unchanged from before this pass, so a
       member who never touches theming sees exactly what they always saw.
    2. `@media (prefers-color-scheme: light)` — system preference, when the
       member has not made an explicit in-product choice.
    3. `[data-theme="light"]` / `[data-theme="dark"]` — an explicit member
       choice, set by the theme control and persisted via /api/settings.

  The neutral/accent RAMPS keep their existing step numbers as a RANK, not a
  literal value: low numbers stay "closer to foreground / more prominent",
  high numbers stay "closer to the canvas / more recessed", in both themes.
  That is what lets every existing `var(--color-neutral-N)` call site in
  app.css re-theme correctly without being touched — the ramp was already the
  seam this system needed; this pass gives it a second, independently-tuned
  set of values rather than inverting the first set.
*/
:root {
  color-scheme: dark;
  --color-bg: #161826;
  --color-surface: #232532;
  --color-text: #e9e9ed;
  --color-accent: #9184d9; /* review round 7 (Barron): the accent moves to
     the product's blurple — OKLCH hue 289.2, the hue of the app's own Pro
     accent (#9a8fe0, --om-accent-pro) — at the same lightness the steel
     accent held (L 0.660, so the documented ratios survive) and chroma
     in the product blurple's own range (its token sits at C 0.118; the
     accent takes 0.125, from the old steel's 0.030):
     the accent now reads as an accent rather than another neutral. */
  --color-accent-2: #a7a1db; /* the machine-derived stand-in follows: same
     hue, same L 0.734, chroma at the same 2:3 proportion it held */
  --color-divider: color-mix(in srgb, #e9e9ed 16%, transparent);

  /* Tonal ramps — generated in OKLCH on one shared lightness scale, so the
     same step of any role matches the others in visual value. */
  --color-neutral-100: #f3f5fe;
  --color-neutral-200: #e4e7f5;
  --color-neutral-300: #cfd3e5;
  --color-neutral-400: #b2b6ca;
  --color-neutral-500: #9397ab;
  --color-neutral-600: #75798c;
  --color-neutral-700: #595d6c;
  --color-neutral-800: #3f424d;
  --color-neutral-900: #292b31;

  --color-accent-100: #f5f4ff;
  --color-accent-200: #e7e5fe;
  --color-accent-300: #d2cefd;
  --color-accent-400: #b5abfc;
  --color-accent-500: #968ae0;
  --color-accent-600: #796cbf;
  --color-accent-700: #5d5294;
  --color-accent-800: #423a6a;
  --color-accent-900: #2b2741;

  --color-accent-2-100: #f5f4ff;
  --color-accent-2-200: #e7e5fe;
  --color-accent-2-300: #d2cefd;
  --color-accent-2-400: #b5afe8;
  --color-accent-2-500: #9690c9;
  --color-accent-2-600: #7972a9;
  --color-accent-2-700: #5c5783;
  --color-accent-2-800: #423e5d;
  --color-accent-2-900: #2b293a;

  /* Deck section-divider ground — review round 3: saturation as presence.
     Dividers take a saturated deep indigo (hue 277, the neutral ramp's own
     family; C 0.094 — written when the accent held C 0.030, before the
     round-7 blurple raised it past the ground's) with a lighter bloom and
     a ghost tint of the same hue, while the slide grounds stay
     desaturated. Deck-scale fills only — not interface colors. */
  --color-section: #262a60;
  --color-section-glow: #353b80;
  --color-section-ghost: #4c5397;

  --font-heading: "Inter", system-ui, sans-serif;
  --font-heading-weight: 500;
  --font-body: "Inter", system-ui, sans-serif;

  --space-1: 2.8px;
  --space-2: 5.6px;
  --space-3: 8.4px;
  --space-4: 11.2px;
  --space-6: 16.8px;
  --space-8: 22.4px;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;

  /* Elevation — derived from the ground: soft ink-tinted shadows on a
     light theme, a hairline edge + ambient darkness on a dark one. */
  --shadow-sm: 0 0 0 1px #3f424d;
  --shadow-md: 0 0 0 1px #595d6c, 0 6px 18px rgba(0,0,0,0.55);
  --shadow-lg: 0 0 0 1px #9397ab, 0 16px 40px rgba(0,0,0,0.65);

  /* — semantic layer — new component work should reach for these, not the
     raw ramp, so a theme's intent lives in one place. */
  --surface-raised: #2b2e3d;
  --surface-hover: color-mix(in srgb, var(--color-text) 6%, transparent);
  --surface-selected: color-mix(in srgb, var(--color-accent) 16%, var(--color-surface));
  --border-subtle: var(--color-divider);
  --border-strong: color-mix(in srgb, var(--color-text) 30%, transparent);
  --text-primary: var(--color-text);
  --text-secondary: var(--color-neutral-300);
  --text-muted: var(--color-neutral-500);
  --accent-hover: color-mix(in srgb, var(--color-accent) 88%, white);
  --accent-subtle: color-mix(in srgb, var(--color-accent) 14%, transparent);
  --success: #6fbf8b;
  --warning: #d9a441;
  --error: #d97a7a;
  --focus-ring: var(--color-accent);
  --accent-contrast: #161826;

  /* — type scale — the sizes new/updated rules use; existing bespoke
     literals elsewhere are untouched by this pass. */
  /*
    HC-HUMAN-USE-1 — raised after the owner's first real recheck: the whole
    product read as too small next to premium daily-use AI interfaces. This
    is a deliberate re-tuning of the SCALE, not a uniform zoom — the ratio
    between steps is preserved, the floor moves up to the owner's named
    minimums, and every existing bespoke px literal across app.css/nocturne
    component rules was individually re-mapped to the corresponding new
    step (a single-pass regex keyed on value, not a global multiplier), so
    hierarchy relationships that already existed are kept, not flattened.
  */
  --text-2xs: 13px;    /* metadata floor — the owner's named minimum */
  --text-xs: 13.5px;   /* secondary metadata */
  --text-sm: 14.5px;   /* secondary UI — labels, buttons, model names */
  --text-base: 15.5px; /* base UI text */
  --text-md: 16.5px;   /* primary reading — turn/Compare/Council body text */
  --text-lg: 17.5px;   /* larger reading, verdict-weight text */
  --text-xl: 21px;
  --measure-reading: 72ch; /* one comfortable line length, used everywhere
     prose is the point: turn responses, Compare answers, Council synthesis */

  /* — motion — short and quiet by design; see the reduced-motion block
     below, which this pass adds. */
  --transition-fast: 120ms cubic-bezier(0.2, 0, 0.2, 1);
  --transition-base: 180ms cubic-bezier(0.2, 0, 0.2, 1);

  /*
    — width doctrine — content width follows the cognitive task; it is not
    inherited from the monitor. Measured against a 1536px acceptance
    viewport, not guessed:

      --width-shell            the outer product boundary. Unchanged at
                                1400px — `.main`'s existing value — this is
                                what already bounds the topbar and every
                                route's outer padding, and Compare/Council
                                legitimately want access to all of it.
      --width-workspace         the tool-appropriate canvas for a page whose
                                content does NOT structurally need the full
                                shell — Command chief among them. 1120px sits
                                inside the owner's own named 1000-1200px
                                target range at 1536px, chosen against the
                                actual measured composition (cmd-main's
                                minmax(0,1fr) 330px rail track, its
                                calc(space-8*1.6) gap, and the existing
                                --measure-reading prose cap already in use
                                inside it) rather than picked in isolation.
      --width-wide-workspace    Compare/Council's own earned width when a
                                side-by-side comparison genuinely wants it.
                                Equal to the shell — there is no wider tier
                                a HyperCommand route currently needs.
  */
  --width-shell: 1400px;
  --width-workspace: 1120px;
  --width-wide-workspace: var(--width-shell);

  /* Collapsed-rail: still a rail (per the doctrine — "compact rail", never
     zero), just no labels. Context: a real toggleable inspector, and IS
     permitted to reserve zero width when closed — see app.css. */
  --width-rail-expanded: 248px;
  --width-rail-collapsed: 56px;
  --width-context: 300px;
}

/* System preference, only when the member has made no explicit choice. */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]):not([data-theme="light"]) {
    color-scheme: light;
    --color-bg: #faf9fc;
    --color-surface: #ffffff;
    --color-text: #20212b;
    --color-accent: #6a5cd6;
    --color-accent-2: #574abf;
    --color-divider: color-mix(in srgb, #20212b 12%, transparent);

    --color-neutral-100: #14151b;
    --color-neutral-200: #262832;
    --color-neutral-300: #3d404d;
    --color-neutral-400: #565a6a;
    --color-neutral-500: #71758a;
    --color-neutral-600: #9297a8;
    --color-neutral-700: #b8bbc8;
    --color-neutral-800: #dddfe6;
    --color-neutral-900: #f2f2f6;

    --color-accent-100: #241d4a;
    --color-accent-200: #362c6b;
    --color-accent-300: #4a3f8e;
    --color-accent-400: #5a4db3;
    --color-accent-500: #6a5cd6;
    --color-accent-600: #8b7fe0;
    --color-accent-700: #ada4e9;
    --color-accent-800: #cfc9f2;
    --color-accent-900: #f0eefb;

    --color-accent-2-100: #211c40;
    --color-accent-2-200: #322a5f;
    --color-accent-2-300: #453a80;
    --color-accent-2-400: #574abf;
    --color-accent-2-500: #6c5fca;
    --color-accent-2-600: #8b80d6;
    --color-accent-2-700: #aca4e3;
    --color-accent-2-800: #cec9ef;
    --color-accent-2-900: #f0eefb;

    --shadow-sm: 0 0 0 1px #dddfe6;
    --shadow-md: 0 0 0 1px #cfd2dc, 0 6px 18px rgba(30,32,50,0.10);
    --shadow-lg: 0 0 0 1px #b8bbc8, 0 16px 40px rgba(30,32,50,0.14);

    --surface-raised: #f5f4f9;
    --surface-hover: color-mix(in srgb, var(--color-text) 5%, transparent);
    --surface-selected: color-mix(in srgb, var(--color-accent) 10%, var(--color-surface));
    --border-subtle: var(--color-divider);
    --border-strong: color-mix(in srgb, var(--color-text) 24%, transparent);
    --text-primary: var(--color-text);
    --text-secondary: var(--color-neutral-300);
    --text-muted: var(--color-neutral-500);
    --accent-hover: color-mix(in srgb, var(--color-accent) 88%, black);
    --accent-subtle: color-mix(in srgb, var(--color-accent) 10%, transparent);
    --success: #2f9e5c;
    --warning: #ad7314;
    --error: #c23b3b;
    --focus-ring: var(--color-accent);
    --accent-contrast: #ffffff; /* text/icon color ON a solid accent fill */
  }
}

/* Explicit member choice — always wins over system preference. */
[data-theme="light"] {
  color-scheme: light;
  --color-bg: #faf9fc;
  --color-surface: #ffffff;
  --color-text: #20212b;
  --color-accent: #6a5cd6;
  --color-accent-2: #574abf;
  --color-divider: color-mix(in srgb, #20212b 12%, transparent);

  --color-neutral-100: #14151b;
  --color-neutral-200: #262832;
  --color-neutral-300: #3d404d;
  --color-neutral-400: #565a6a;
  --color-neutral-500: #71758a;
  --color-neutral-600: #9297a8;
  --color-neutral-700: #b8bbc8;
  --color-neutral-800: #dddfe6;
  --color-neutral-900: #f2f2f6;

  --color-accent-100: #241d4a;
  --color-accent-200: #362c6b;
  --color-accent-300: #4a3f8e;
  --color-accent-400: #5a4db3;
  --color-accent-500: #6a5cd6;
  --color-accent-600: #8b7fe0;
  --color-accent-700: #ada4e9;
  --color-accent-800: #cfc9f2;
  --color-accent-900: #f0eefb;

  --color-accent-2-100: #211c40;
  --color-accent-2-200: #322a5f;
  --color-accent-2-300: #453a80;
  --color-accent-2-400: #574abf;
  --color-accent-2-500: #6c5fca;
  --color-accent-2-600: #8b80d6;
  --color-accent-2-700: #aca4e3;
  --color-accent-2-800: #cec9ef;
  --color-accent-2-900: #f0eefb;

  --shadow-sm: 0 0 0 1px #dddfe6;
  --shadow-md: 0 0 0 1px #cfd2dc, 0 6px 18px rgba(30,32,50,0.10);
  --shadow-lg: 0 0 0 1px #b8bbc8, 0 16px 40px rgba(30,32,50,0.14);

  --surface-raised: #f5f4f9;
  --surface-hover: color-mix(in srgb, var(--color-text) 5%, transparent);
  --surface-selected: color-mix(in srgb, var(--color-accent) 10%, var(--color-surface));
  --border-subtle: var(--color-divider);
  --border-strong: color-mix(in srgb, var(--color-text) 24%, transparent);
  --text-primary: var(--color-text);
  --text-secondary: var(--color-neutral-300);
  --text-muted: var(--color-neutral-500);
  --accent-hover: color-mix(in srgb, var(--color-accent) 88%, black);
  --accent-subtle: color-mix(in srgb, var(--color-accent) 10%, transparent);
  --success: #2f9e5c;
  --warning: #ad7314;
  --error: #c23b3b;
  --focus-ring: var(--color-accent);
  --accent-contrast: #ffffff;
}
[data-theme="dark"] { color-scheme: dark; }

@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;
  }
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
}
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: var(--font-heading-weight); }

.lighten{mix-blend-mode:lighten;background-color:transparent}

/* ══════════════════════════════════════════════════════════════════════════
   Components — built with the tokens above. Plain CSS
   on plain HTML: no JavaScript, no build step. Each class is documented in
   readme.md and demonstrated in foundations/ and components/.
   ══════════════════════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; font-size: 16.5px; line-height: 1.55; font-weight: 400; }
/* Quiet, restrained motion on every interactive surface — one declaration,
   rather than a transition property re-authored per component. Silenced
   globally under prefers-reduced-motion, above. */
a, button, input, textarea, select, .btn, .chip, .card, .tag, .rail-item {
  transition: background-color var(--transition-fast), border-color var(--transition-fast),
    color var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  line-height: 1.12; letter-spacing: -0.015em; margin: 0 0 var(--space-2);
}
h1 { font-size: 42px; }
h2 { font-size: 32px; }
h3 { font-size: 26px; }
h4 { font-size: 21px; }
h5 { font-size: 17px; }
h6 { font-size: 15px; }
h6 { letter-spacing: 0.08em; text-transform: uppercase; }
p { margin: 0 0 var(--space-3); }
a { color: var(--color-accent); text-underline-offset: 3px; }
img { display: block; max-width: 100%; }
figure { margin: 0; }
figcaption {
  font-size: 13.5px; margin-top: var(--space-1);
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}
.text-muted { color: color-mix(in srgb, var(--color-text) 55%, transparent); }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

/* — rules — */
/* Rules fade to transparent at both ends instead of stopping cleanly — a
   Nocturne signature. The ramp is 48px an end (one deck baseline unit),
   painted from the same divider token. Freestanding rules fade; box
   outlines, in-control separators, and short accent marks stay solid. */
.hr {
  height: 1px; border: 0; margin: var(--space-4) 0;
  background: linear-gradient(to right,
    transparent, var(--color-divider) 48px,
    var(--color-divider) calc(100% - 48px), transparent);
}

/* — buttons — */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer; text-decoration: none;
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 15.5px; line-height: 1.2; color: var(--color-text); /* matches the .input's 14px —
     the pair sits side by side in sign-up rows */
  background: transparent; border: 1px solid transparent;
  padding: var(--space-2) calc(var(--space-3) * 1.2);
  border-radius: var(--radius-md);
}
.btn svg { display: block; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary { color: var(--color-accent); border-color: var(--color-accent); }
.btn-primary:hover { background: color-mix(in srgb, var(--color-accent) 12%, transparent); }
.btn-primary:active { background: color-mix(in srgb, var(--color-accent) 22%, transparent); }
.btn-secondary { border-color: var(--color-divider); }
.btn-secondary:hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.btn-secondary:active { background: color-mix(in srgb, var(--color-text) 14%, transparent); }
.btn-ghost { color: var(--color-accent); padding-inline: var(--space-1); }
.btn-ghost:hover { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.btn-ghost:active { background: color-mix(in srgb, var(--color-accent) 18%, transparent); }
.btn-icon { width: 36px; height: 36px; padding: 0; }
.btn-block { width: 100%; margin-top: var(--space-2); }

/* — forms — */
.field > label {
  display: block; font-size: 14.5px; margin-bottom: 5px;
  color: color-mix(in srgb, var(--color-text) 70%, transparent);
}
.input {
  width: 100%; min-height: 36px; padding: 6px 10px; font: inherit;
  font-size: 15.5px; color: var(--color-text); caret-color: var(--color-accent);
  background: var(--color-surface);
  border: 1px solid var(--color-divider); border-radius: var(--radius-md);
}
.input:hover { border-color: color-mix(in srgb, var(--color-text) 45%, transparent); }
.input:focus-visible { border-color: var(--color-accent); outline-offset: 0; }
textarea.input { min-height: 90px; resize: vertical; }
.radio { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; font-size: 15.5px; }
.radio input, .seg-opt input {
  position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none;
}
.radio .dot {
  width: 16px; height: 16px; flex: none; border-radius: 50%;
  border: 1.5px solid var(--color-divider);
}
.radio:hover .dot { border-color: var(--color-accent); }
.radio input:checked + .dot {
  border-color: var(--color-accent); background: var(--color-accent);
  box-shadow: inset 0 0 0 4px var(--color-bg);
}
.radio input:focus-visible + .dot { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.seg {
  display: inline-flex; overflow: hidden;
  border: 1px solid var(--color-divider); border-radius: var(--radius-md);
}
.seg-opt {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px; font-size: 15px; cursor: pointer;
}
.seg-opt + .seg-opt { border-left: 1px solid var(--color-divider); }
.seg-opt:has(input:checked) { color: var(--color-accent); box-shadow: inset 0 0 0 1px var(--color-accent); }
.seg-opt:not(:has(input:checked)):hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.seg-opt:has(input:focus-visible) { outline: 2px solid var(--color-accent); outline-offset: -2px; }

/* — cards — */
.card {
  display: flex; flex-direction: column; gap: var(--space-2);
  padding: var(--space-3); border-radius: var(--radius-md); background: var(--color-surface);
}
.card-kicker { font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-accent); }
.card-title {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 17.5px; line-height: 1.2;
}
.card-body { margin: 0; font-size: 15px; opacity: 0.8; flex: 1; }
.card-meta {
  display: flex; align-items: center; gap: 6px; font-size: 13.5px;
  color: color-mix(in srgb, var(--color-text) 50%, transparent);
}
.elev-sm { box-shadow: var(--shadow-sm); }
.elev-md { box-shadow: var(--shadow-md); }
.elev-lg { box-shadow: var(--shadow-lg); }

/* — tags — */
.tag {
  display: inline-flex; align-items: center; font-size: 13.5px;
  letter-spacing: 0.02em; padding: 3px 10px;
  border-radius: calc(var(--radius-md) * 0.75);
}
.tag-accent { background: var(--color-accent-800); color: var(--color-accent-100); }
.tag-accent-2 { background: var(--color-accent-2-800); color: var(--color-accent-2-100); }
.tag-neutral { background: var(--color-neutral-800); color: var(--color-neutral-100); }
.tag-outline { border: 1px solid var(--color-accent); color: var(--color-accent); }

/* — navigation — */
.nav {
  display: flex; align-items: center; gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-bottom: none;
}
.nav-brand {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 19px; margin-right: auto;
}
.nav a { color: inherit; text-decoration: none; font-size: 15.5px; }
.nav a:hover, .nav a[aria-current='page'] { color: var(--color-accent); }

/* — tables — */
.table { width: 100%; border-collapse: collapse; font-size: 15.5px; }
.table th {
  text-align: left; font-size: 13.5px; letter-spacing: 0.08em; text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text) 60%, transparent);
  padding: var(--space-2); border-bottom: 1px solid transparent; /* keeps layout; the row paints the fading rule */
}
.table td {
  padding: var(--space-2);
  border-bottom: 1px solid transparent;
}
/* Row rules as row-level strips so the end-fade spans the row, not each cell. */
.table thead tr {
  background: linear-gradient(to right,
    transparent, var(--color-divider) 48px,
    var(--color-divider) calc(100% - 48px), transparent) no-repeat bottom / 100% 1px;
}
.table tbody tr {
  background: linear-gradient(to right,
    transparent, color-mix(in srgb, var(--color-text) 8%, transparent) 48px,
    color-mix(in srgb, var(--color-text) 8%, transparent) calc(100% - 48px), transparent) no-repeat bottom / 100% 1px;
}
.table tbody tr:hover {
  /* the hover tint layers over the row rule, which keeps painting */
  background:
    linear-gradient(color-mix(in srgb, var(--color-text) 4%, transparent),
                    color-mix(in srgb, var(--color-text) 4%, transparent)) no-repeat 0 0 / 100% 100%,
    linear-gradient(to right,
      transparent, color-mix(in srgb, var(--color-text) 8%, transparent) 48px,
      color-mix(in srgb, var(--color-text) 8%, transparent) calc(100% - 48px), transparent) no-repeat bottom / 100% 1px;
}

/* — dialog — */
.dialog-backdrop {
  position: fixed; inset: 0; display: grid; place-items: center;
  padding: var(--space-4);
  background: color-mix(in srgb, var(--color-neutral-900) 50%, transparent);
}
.dialog {
  width: min(440px, 100%); display: flex; flex-direction: column; gap: var(--space-3);
  padding: var(--space-4); border-radius: var(--radius-lg);
  background: var(--color-surface); box-shadow: var(--shadow-lg);
}
.dialog-title {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 21px;
}
.dialog-body { font-size: 15.5px; opacity: 0.85; }
.dialog-actions { display: flex; justify-content: flex-end; gap: var(--space-2); margin-top: var(--space-2); }