/* =========================================================================
   RHOBEAR DESIGN SYSTEM — Foundations
   ========================================================================= */

/* ---------- FONTS (system stacks only — NO CDN, NO @import URLs) -------- */
/* Pixel display family: prefers Silkscreen / Press Start 2P / VT323 if user
   has them locally, falls back to monospace. We do not load webfonts;
   the brand's "pixel-display" voice is provided by the system fallback chain.
   Body uses native system sans for legibility. Mono blocks use the OS mono.
*/

:root {

  /* =====================================================================
     TYPE STACKS
     ===================================================================== */
  --font-display:  "Silkscreen", "Press Start 2P", "VT323", "ChicagoFLF",
                   ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --font-pixel:    "VT323", "Silkscreen", "Press Start 2P",
                   ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --font-body:     -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
                   Arial, sans-serif;
  --font-mono:     ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas,
                   "Liberation Mono", monospace;

  /* =====================================================================
     TYPE SCALE (px-based; clamps applied per element)
     ===================================================================== */
  --fs-display:    clamp(3.25rem, 6.5vw, 5.5rem);   /* hero H1                 */
  --fs-h1:         clamp(2.25rem, 4vw, 3.5rem);     /* page H1                 */
  --fs-h2:         clamp(1.75rem, 2.6vw, 2.5rem);   /* section H2              */
  --fs-h3:         1.25rem;                          /* card H3                 */
  --fs-lead:       clamp(1.05rem, 1.3vw, 1.25rem);  /* deck / sub              */
  --fs-body:       1rem;                             /* default body, ≥16px     */
  --fs-body-lg:    1.125rem;
  --fs-small:      0.875rem;
  --fs-micro:      0.75rem;                          /* mono badge / eyebrow    */

  --lh-tight:      1.1;
  --lh-snug:       1.3;
  --lh-body:       1.6;

  --tracking-mono: 0.04em;
  --tracking-eyebrow: 0.16em;

  /* =====================================================================
     COLOR — PRIMARY (LIGHT mode, default surface)
     ===================================================================== */
  /* Warm off-white paper base — every page sits on this */
  --c-bg:          #f6efe1;          /* warm off-white paper                   */
  --c-bg-2:        #eee4d0;          /* slightly deeper paper, cards behind    */
  --c-bg-3:        #e3d6bd;          /* warmer paper, recessed surfaces        */
  --c-surface:     #fbf6ea;          /* primary card surface                   */
  --c-surface-2:   #f1e7d2;          /* alt card                                */

  /* Charcoal ink — body, headings */
  --c-ink:         #1a1714;          /* primary text                            */
  --c-ink-2:       #3a322a;          /* secondary text                          */
  --c-ink-3:       #6b5f51;          /* muted text                              */
  --c-ink-4:       #9a8b78;          /* placeholder / subtle                    */

  /* Warm amber — THE accent. Use sparingly. */
  --c-amber:       #f59e2c;          /* default accent                          */
  --c-amber-deep:  #d97a1a;          /* hover / pressed / deep-emphasis text    */
  --c-amber-soft:  #fde0b6;          /* tint background for amber pills         */
  --c-amber-tint:  #fff3d9;          /* very light amber wash                   */

  /* Stitch / line / border */
  --c-stitch:      #2a221b;          /* dashed inner border ink                 */
  --c-line:        rgba(26,23,20,0.14);
  --c-line-strong: rgba(26,23,20,0.28);

  /* =====================================================================
     COLOR — DARK BAND (the "tech depth" band)
     Used on dark sections inside light pages (Install, CLI traces, etc.)
     ===================================================================== */
  --c-dark-bg:     #0d1220;          /* deep navy-black                         */
  --c-dark-bg-2:   #131a2c;          /* recessed dark card                       */
  --c-dark-surface:#182135;          /* dark card surface                       */
  --c-dark-ink:    #e8ecf3;          /* dark-mode body text                     */
  --c-dark-ink-2:  #b6bdcc;          /* dark-mode secondary                     */
  --c-dark-ink-3:  #7a8398;          /* dark-mode muted                         */

  --c-cyan:        #7dffd5;          /* mint/cyan accent on dark                */
  --c-cyan-deep:   #4fd6a9;          /* dark-mode active state                  */
  --c-cyan-soft:   rgba(125,255,213,0.16);

  /* =====================================================================
     COLOR — SEMANTIC (status / role badges)
     Lifted from the actual app screenshots
     ===================================================================== */
  --c-status-ok:       #4fd6a9;      /* vetted / pass / merge-ready             */
  --c-status-warn:     #f5c84c;      /* community / caution / unverified        */
  --c-status-error:    #ef6079;      /* unvetted / blocked / failing            */
  --c-status-info:     #7dffd5;      /* active worker / cyan                    */

  /* Group / column / label dots (Board) */
  --c-tag-a:           #f5c84c;      /* yellow group A                          */
  --c-tag-b:           #4fd6a9;      /* mint group B                            */
  --c-tag-c:           #7dffd5;      /* cyan group C                            */
  --c-tag-d:           #d472f0;      /* magenta group D                         */
  --c-tag-e:           #b0b8c5;      /* neutral standalone                       */

  /* Worlds palette accents */
  --c-world-space:     #7dffd5;      /* cyan — Starship 17-B                    */
  --c-world-west:      #f59e2c;      /* amber — Frontier                         */
  --c-world-neon:      #d472f0;      /* magenta — Neon Rain City                */

  /* =====================================================================
     SPACING SCALE (4-pt grid)
     ===================================================================== */
  --s-1:   4px;
  --s-2:   8px;
  --s-3:  12px;
  --s-4:  16px;
  --s-5:  20px;
  --s-6:  24px;
  --s-8:  32px;
  --s-10: 40px;
  --s-12: 48px;
  --s-16: 64px;
  --s-20: 80px;
  --s-24: 96px;
  --s-32: 128px;

  /* =====================================================================
     RADIUS
     ===================================================================== */
  --r-1:  6px;       /* chips, small badges                                   */
  --r-2:  10px;      /* buttons, inputs                                       */
  --r-3:  14px;      /* small cards, pills                                    */
  --r-4:  18px;      /* main cards (default)                                  */
  --r-5:  22px;      /* hero cards                                            */
  --r-pill: 999px;

  /* =====================================================================
     SHADOWS — soft, warm, NOT crisp UI shadows
     ===================================================================== */
  --shadow-soft:   0 1px 0 rgba(26,23,20,0.05),
                   0 4px 14px -6px rgba(72,52,30,0.18);
  --shadow-card:   0 1px 0 rgba(26,23,20,0.05),
                   0 8px 22px -10px rgba(72,52,30,0.22);
  --shadow-lift:   0 2px 0 rgba(26,23,20,0.05),
                   0 18px 38px -14px rgba(72,52,30,0.30);
  --shadow-inner:  inset 0 1px 0 rgba(255,255,255,0.45);

  /* On dark band */
  --shadow-dark:   0 2px 0 rgba(0,0,0,0.18),
                   0 18px 30px -14px rgba(0,0,0,0.55);

  /* =====================================================================
     BORDERS — the signature is the DASHED INNER STITCH
     ===================================================================== */
  --border-hair:    1px solid var(--c-line);
  --border-card:    1.5px solid var(--c-line-strong);
  --border-stitch:  1.5px dashed var(--c-stitch);   /* the sewn-edge look      */
  --border-stitch-soft: 1.5px dashed rgba(26,23,20,0.45);

  /* =====================================================================
     MOTION
     ===================================================================== */
  --ease-soft:     cubic-bezier(.22,.61,.36,1);
  --ease-out-back: cubic-bezier(.34,1.56,.64,1);
  --dur-fast:      140ms;
  --dur-base:      240ms;
  --dur-slow:      420ms;

  /* Marquee speeds for logo rows */
  --marquee-row1:  52s;
  --marquee-row2:  64s;

  /* Sprite bob (perched-character idle loop) */
  --bob-distance:  3px;
  --bob-duration:  2.4s;
}

/* =========================================================================
   SEMANTIC ELEMENT STYLES — drop this CSS in and elements get the brand
   ========================================================================= */

html { color-scheme: light; }

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--c-ink);
  background: var(--c-bg);
  /* Sharper text on the warm cream background.
     subpixel-antialiased keeps subpixel positioning intact (vs antialiased,
     which forces grayscale and softens edges on light backgrounds). */
  -webkit-font-smoothing: subpixel-antialiased;
  -moz-osx-font-smoothing: auto;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern" 1, "liga" 1;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--c-ink);
  letter-spacing: 0;
  line-height: var(--lh-tight);
  text-wrap: balance;
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); line-height: var(--lh-snug); }

p { text-wrap: pretty; }

em { font-style: normal; color: var(--c-amber-deep); }

code, kbd, samp, pre {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

a {
  color: var(--c-amber-deep);
  text-decoration: underline;
  text-decoration-style: dashed;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color var(--dur-fast) var(--ease-soft);
}
a:hover { color: var(--c-amber); }

/* Eyebrow — pixel mono, small caps, amber */
.eyebrow {
  font-family: var(--font-display);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--c-amber-deep);
}

/* Display H1 — the hero headline */
.h-display {
  font-family: var(--font-display);
  font-size: var(--fs-display);
  line-height: var(--lh-tight);
  color: var(--c-ink);
  text-wrap: balance;
}

/* Mono label — small caps brand sub-label */
.mono-label {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: var(--c-ink-3);
}

/* The paper-grain card surface */
.card-paper {
  background: var(--c-surface);
  background-image:
    radial-gradient(rgba(120,80,30,0.04) 1px, transparent 1.4px),
    radial-gradient(rgba(120,80,30,0.025) 1px, transparent 1.4px);
  background-size: 4px 4px, 7px 7px;
  background-position: 0 0, 2px 3px;
  border-radius: var(--r-4);
  box-shadow: var(--shadow-card), var(--shadow-inner);
  position: relative;
}
.card-paper.stitched::after {
  content: "";
  position: absolute;
  inset: 6px;
  border: var(--border-stitch);
  border-radius: calc(var(--r-4) - 6px);
  pointer-events: none;
}

/* Dark band — the cyan/depth section */
.band-dark {
  background: var(--c-dark-bg);
  color: var(--c-dark-ink);
  --c-ink: var(--c-dark-ink);
  --c-ink-2: var(--c-dark-ink-2);
  --c-ink-3: var(--c-dark-ink-3);
}
.band-dark h1, .band-dark h2, .band-dark h3 { color: var(--c-dark-ink); }
.band-dark .eyebrow { color: var(--c-cyan); }
.band-dark em { color: var(--c-cyan); }

/* Amber pill button */
.btn-amber {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: 12px 22px;
  border-radius: var(--r-pill);
  background: var(--c-amber);
  color: #221608;
  font-family: var(--font-display);
  font-size: var(--fs-small);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  text-decoration: none;
  border: 1.5px solid var(--c-amber-deep);
  box-shadow: var(--shadow-soft), inset 0 1px 0 rgba(255,255,255,0.45);
  transition: transform var(--dur-fast) var(--ease-soft),
              box-shadow var(--dur-fast) var(--ease-soft),
              background var(--dur-fast) var(--ease-soft);
}
.btn-amber:hover { background: var(--c-amber-deep); color: #fff; transform: translateY(-1px); }
.btn-amber:active { transform: translateY(0); }

/* Ghost button */
.btn-ghost {
  display: inline-flex; align-items: center; gap: var(--s-2);
  padding: 11px 20px; border-radius: var(--r-pill);
  background: transparent; color: var(--c-ink);
  font-family: var(--font-display); font-size: var(--fs-small);
  letter-spacing: var(--tracking-mono); text-transform: uppercase;
  text-decoration: none;
  border: 1.5px solid var(--c-ink-2);
  transition: background var(--dur-fast) var(--ease-soft);
}
.btn-ghost:hover { background: rgba(26,23,20,0.06); }

/* Dashed mono chip — the "OAuth not API keys" pattern */
.chip-mono {
  display: inline-flex; align-items: center; gap: var(--s-2);
  padding: 7px 14px;
  border-radius: var(--r-pill);
  background: transparent;
  border: var(--border-stitch-soft);
  font-family: var(--font-mono); font-size: var(--fs-micro);
  text-transform: uppercase; letter-spacing: var(--tracking-mono);
  color: var(--c-ink-2);
}

/* Amber chip — quant pills, 9-pillar ribbon */
.chip-amber {
  display: inline-flex; align-items: center; gap: var(--s-2);
  padding: 8px 14px;
  border-radius: var(--r-pill);
  background: var(--c-amber-soft);
  color: var(--c-amber-deep);
  border: 1.5px dashed var(--c-amber-deep);
  font-family: var(--font-display); font-size: var(--fs-micro);
  text-transform: uppercase; letter-spacing: var(--tracking-mono);
}

/* Cyan chip — for dark bands / "active world" */
.chip-cyan {
  display: inline-flex; align-items: center; gap: var(--s-2);
  padding: 8px 14px;
  border-radius: var(--r-pill);
  background: var(--c-cyan-soft);
  color: var(--c-cyan);
  border: 1.5px solid rgba(125,255,213,0.45);
  font-family: var(--font-display); font-size: var(--fs-micro);
  text-transform: uppercase; letter-spacing: var(--tracking-mono);
}

/* Terminal block — used in CLI traces, install, etc. */
.terminal {
  background: #0a0f1c;
  color: #d8e1f0;
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  line-height: 1.65;
  padding: var(--s-6) var(--s-6);
  border-radius: var(--r-3);
  border: 1px solid #1c2540;
  box-shadow: var(--shadow-dark);
  overflow-x: auto;
  white-space: pre;
}
.terminal .ok    { color: var(--c-cyan); }
.terminal .warn  { color: var(--c-status-warn); }
.terminal .err   { color: var(--c-status-error); }
.terminal .dim   { color: #6c7795; }
.terminal .you   { color: var(--c-amber); }
.terminal .role  { color: var(--c-cyan); }

/* Sprite bob — perched-character idle loop */
@media (prefers-reduced-motion: no-preference) {
  .bob {
    animation: rho-bob var(--bob-duration) ease-in-out infinite;
    will-change: transform;
  }
  @keyframes rho-bob {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(calc(var(--bob-distance) * -1)); }
  }
}

/* Pixel-art image rendering for sprite/screenshot fidelity */
.pixelated {
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
}