/* ============================================================
   Thought Pattern AI - Design Tokens
   Dark editorial brand: aubergine #2C0A2C ground, acid yellow
   #E4E527 accent, three-voice type (Fitzgerald · Cormorant
   Garamond · Space Mono). Deco ornament vocabulary.
   ============================================================ */

@import url("https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,400;1,500&family=Space+Mono:ital,wght@0,400;0,700;1,400&display=swap");

/* Fitzgerald - primary display face (local, ships Regular + Black) */
@font-face {
  font-family: "Fitzgerald";
  src: url("assets/fonts/fitzgerald.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Fitzgerald";
  src: url("assets/fonts/fitzblack.ttf") format("truetype");
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

:root {
  /* -------- Brand ------------------------------------------ */
  --tp-yellow:      #E4E527;   /* accent · the voice of rule   */
  --tp-yellow-hi:   #F2F36B;   /* hover / lift                 */
  --tp-yellow-lo:   #BDBE1C;   /* pressed / dim                */
  --tp-yellow-deep: #9C9D17;   /* reading-weight yellow on dark */
  --tp-yellow-glow: rgba(228, 229, 39, 0.22);

  --tp-aubergine:   #2C0A2C;   /* default ground - Ink         */
  --tp-aubergine-1: #1A061A;   /* deeper surface / recessed    */
  --tp-aubergine-2: #3E1540;   /* elevated surface / card      */
  --tp-aubergine-3: #5A2A5C;   /* raised / hover fill          */

  /* -------- Neutrals on dark ------------------------------- */
  --tp-ink-0:   #F7F3F7;   /* primary text on aubergine - Vellum */
  --tp-ink-1:   #D4C9D4;   /* body                          */
  --tp-ink-2:   #A498A5;   /* muted, subtitles, meta        */
  --tp-ink-3:   #6E5F70;   /* subtle, placeholder           */
  --tp-ink-4:   #4A3A4C;   /* hairlines, disabled           */

  --tp-line:        rgba(247, 243, 247, 0.12);  /* 1px borders */
  --tp-line-strong: rgba(247, 243, 247, 0.22);
  --tp-line-yellow: rgba(228, 229, 39, 0.55);
  --tp-rule:        rgba(228, 229, 39, 0.35);   /* deco brass rule */

  /* -------- Semantic (tuned for aubergine ground) ---------- */
  --tp-success:     #4ADE80;
  --tp-success-bg:  rgba(74, 222, 128, 0.12);
  --tp-running:     #7DD3FC;
  --tp-running-bg:  rgba(125, 211, 252, 0.14);
  --tp-warning:     #FBBF24;
  --tp-warning-bg:  rgba(251, 191, 36, 0.14);
  --tp-danger:      #F87171;
  --tp-danger-bg:   rgba(248, 113, 113, 0.15);
  --tp-pending:     var(--tp-ink-3);

  /* -------- Semantic tokens -------------------------------- */
  --tp-bg:           var(--tp-aubergine);
  --tp-bg-surface:   var(--tp-aubergine-2);
  --tp-bg-recessed:  var(--tp-aubergine-1);
  --tp-bg-raised:    var(--tp-aubergine-3);
  --tp-bg-inverse:   var(--tp-ink-0);

  --tp-fg:           var(--tp-ink-0);
  --tp-fg-body:      var(--tp-ink-1);
  --tp-fg-muted:     var(--tp-ink-2);
  --tp-fg-subtle:    var(--tp-ink-3);
  --tp-fg-display:   var(--tp-yellow);   /* section eyebrows */

  --tp-border:        var(--tp-line);
  --tp-border-strong: var(--tp-line-strong);
  --tp-border-active: var(--tp-yellow);

  --tp-action:         var(--tp-yellow);
  --tp-action-hover:   var(--tp-yellow-hi);
  --tp-action-pressed: var(--tp-yellow-lo);
  --tp-action-fg:      var(--tp-aubergine);   /* yellow needs dark text */

  /* -------- Typography - three voices --------------------- */
  --tp-font-display:
    "Fitzgerald", "Didot", "Bodoni 72", "Century Gothic", sans-serif;
  --tp-font-serif:
    "Cormorant Garamond", "EB Garamond", "Garamond", Georgia, serif;
  --tp-font-sans:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --tp-font-mono:
    "Space Mono", "SF Mono", ui-monospace, Menlo, Consolas,
    "Liberation Mono", monospace;

  /* Reading sizes scale slightly larger - serifs need room */
  --tp-fs-xs:   0.72rem;
  --tp-fs-sm:   0.85rem;
  --tp-fs-base: 1rem;
  --tp-fs-md:   1.0625rem;    /* 17px  - body serif          */
  --tp-fs-lg:   1.25rem;      /* 20px  - section intros       */
  --tp-fs-xl:   1.5rem;       /* 24px  - h3 / pull            */
  --tp-fs-2xl:  2rem;         /* 32px  - h2 display           */
  --tp-fs-3xl:  3.25rem;      /* 52px  - h1 deco display      */

  --tp-fw-light:   300;
  --tp-fw-regular: 400;
  --tp-fw-medium:  500;
  --tp-fw-semi:    600;
  --tp-fw-bold:    700;

  --tp-lh-tight: 1.1;
  --tp-lh-snug:  1.3;
  --tp-lh-body:  1.55;   /* serifs breathe                   */

  --tp-ls-display: 0.08em;    /* display tracking             */
  --tp-ls-caps:    0.25em;    /* small-caps eyebrows          */
  --tp-ls-mono:    0.14em;    /* mono meta labels             */

  /* -------- Spacing (4-pt base) ---------------------------- */
  --tp-space-0:  0;
  --tp-space-1:  4px;
  --tp-space-2:  8px;
  --tp-space-3:  12px;
  --tp-space-4:  16px;
  --tp-space-5:  20px;
  --tp-space-6:  24px;
  --tp-space-8:  32px;
  --tp-space-9:  36px;
  --tp-space-10: 40px;
  --tp-space-12: 48px;
  --tp-space-16: 64px;
  --tp-space-20: 80px;

  /* -------- Radii - deco is rectilinear -------------------- */
  --tp-radius-none: 0;
  --tp-radius-xs:   2px;
  --tp-radius-sm:   4px;
  --tp-radius-md:   6px;
  --tp-radius-lg:   8px;
  --tp-radius-pill: 999px;

  /* -------- Elevation ------------------------------------- */
  --tp-shadow-none:  none;
  --tp-shadow-modal: 0 20px 50px rgba(0, 0, 0, 0.55);
  --tp-shadow-focus: 0 0 0 3px var(--tp-yellow-glow);
  --tp-shadow-glow:  0 0 0 1px var(--tp-line-yellow),
                     0 0 24px rgba(228, 229, 39, 0.18);

  /* -------- Motion ---------------------------------------- */
  --tp-duration-fast: 120ms;
  --tp-duration-base: 180ms;
  --tp-ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);

  /* -------- Gradients - ground only ----------------------- */
  --tp-gradient-ground:
    radial-gradient(1200px 600px at 20% -10%,
      rgba(228, 229, 39, 0.10), transparent 60%),
    radial-gradient(900px 500px at 85% 110%,
      rgba(228, 229, 39, 0.04), transparent 50%),
    linear-gradient(180deg, #2C0A2C 0%, #1A061A 100%);
  --tp-gradient-yellow:
    linear-gradient(135deg, #F2F36B 0%, #E4E527 55%, #BDBE1C 100%);
}

/* ============================================================
   Element defaults - editorial register
   ============================================================ */

html, body {
  font-family: var(--tp-font-serif);
  font-size: var(--tp-fs-md);
  font-weight: var(--tp-fw-regular);
  line-height: var(--tp-lh-body);
  color: var(--tp-fg-body);
  background: var(--tp-bg);
  margin: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* H1 / H2 - Fitzgerald display, airy tracking */
h1, h2 {
  font-family: var(--tp-font-display);
  color: var(--tp-fg);
  font-weight: var(--tp-fw-regular);
  letter-spacing: var(--tp-ls-display);
  margin: 0 0 var(--tp-space-5);
}
h1 { font-size: var(--tp-fs-3xl); line-height: var(--tp-lh-tight); }
h2 { font-size: var(--tp-fs-2xl); line-height: var(--tp-lh-snug); }

/* H3 - Cormorant, serif with italic tendencies kept optional */
h3 {
  font-family: var(--tp-font-serif);
  color: var(--tp-fg);
  font-size: var(--tp-fs-xl);
  font-weight: var(--tp-fw-semi);
  line-height: var(--tp-lh-snug);
  letter-spacing: 0;
  margin: 0 0 var(--tp-space-3);
}

p {
  color: var(--tp-fg-body);
  line-height: var(--tp-lh-body);
  margin: 0 0 var(--tp-space-4);
}

em, i { font-style: italic; color: var(--tp-fg); }
strong, b { font-weight: var(--tp-fw-semi); color: var(--tp-fg); }

/* ---- Editorial utility classes ---- */

/* Eyebrow / section label - "I · Positioning" */
.tp-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--tp-space-4);
  font-family: var(--tp-font-mono);
  font-size: var(--tp-fs-xs);
  font-weight: var(--tp-fw-regular);
  letter-spacing: var(--tp-ls-caps);
  text-transform: uppercase;
  color: var(--tp-yellow-deep);
}

/* Section intro - italic serif, editorial */
.tp-intro {
  font-family: var(--tp-font-serif);
  font-style: italic;
  font-size: var(--tp-fs-lg);
  line-height: 1.45;
  color: var(--tp-ink-1);
  max-width: 640px;
  margin: 0 0 var(--tp-space-12);
}

/* Mono meta - specs, coordinates, timestamps */
.tp-meta {
  font-family: var(--tp-font-mono);
  font-size: var(--tp-fs-xs);
  font-weight: var(--tp-fw-regular);
  letter-spacing: var(--tp-ls-mono);
  text-transform: uppercase;
  color: var(--tp-fg-muted);
}

/* Subtitle - serif italic or muted serif */
.tp-subtitle {
  font-family: var(--tp-font-serif);
  font-style: italic;
  font-size: var(--tp-fs-lg);
  color: var(--tp-fg-muted);
}

code, pre, kbd, samp {
  font-family: var(--tp-font-mono);
  font-size: var(--tp-fs-sm);
  color: var(--tp-ink-1);
}
pre {
  background: var(--tp-bg-recessed);
  color: var(--tp-ink-0);
  padding: var(--tp-space-4);
  border: 1px solid var(--tp-border);
  border-radius: var(--tp-radius-sm);
  overflow-x: auto;
  line-height: 1.6;
}

/* ============================================================
   Ornament vocabulary - deco structural elements
   ============================================================ */

/* Double rule - brass/yellow, for mastheads and section breaks */
.tp-rule-double {
  border-top: 1px solid var(--tp-yellow-deep);
  border-bottom: 1px solid var(--tp-yellow-deep);
  height: 4px;
  margin: var(--tp-space-8) 0;
}

/* Section-label rule - matches eyebrow; line leads + trails */
.tp-section-label {
  display: flex;
  align-items: center;
  gap: var(--tp-space-5);
  margin-bottom: var(--tp-space-12);
  font-family: var(--tp-font-mono);
  font-size: var(--tp-fs-xs);
  font-weight: var(--tp-fw-regular);
  letter-spacing: var(--tp-ls-caps);
  text-transform: uppercase;
  color: var(--tp-yellow-deep);
}
.tp-section-label::before {
  content: "";
  width: 40px;
  height: 1px;
  background: var(--tp-yellow);
  flex: none;
}
.tp-section-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--tp-rule);
}

/* Deco divider - line · diamond · line */
.tp-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--tp-space-4);
  margin: var(--tp-space-12) 0;
}
.tp-divider::before,
.tp-divider::after {
  content: "";
  width: 120px;
  height: 1px;
  background: var(--tp-yellow-deep);
}
.tp-divider-diamond {
  width: 8px;
  height: 8px;
  background: var(--tp-yellow);
  transform: rotate(45deg);
}

/* Corner brackets - for hero / plate cards. Apply to a positioned
   parent with .tp-brackets, and it paints four hairline L's. */
.tp-brackets {
  position: relative;
}
.tp-brackets::before,
.tp-brackets::after,
.tp-brackets > .tp-brackets-bl,
.tp-brackets > .tp-brackets-br {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  border: 0 solid var(--tp-yellow);
  pointer-events: none;
}
.tp-brackets::before {
  top: 10px; left: 10px;
  border-top-width: 1px;
  border-left-width: 1px;
}
.tp-brackets::after {
  top: 10px; right: 10px;
  border-top-width: 1px;
  border-right-width: 1px;
}
.tp-brackets > .tp-brackets-bl {
  bottom: 10px; left: 10px;
  border-bottom-width: 1px;
  border-left-width: 1px;
}
.tp-brackets > .tp-brackets-br {
  bottom: 10px; right: 10px;
  border-bottom-width: 1px;
  border-right-width: 1px;
}

/* Paper grain - faint radial wash on the body, editorial depth */
.tp-grain::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(228,229,39,0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(228,229,39,0.025) 0%, transparent 55%);
}

/* ============================================================
   Controls - deco rectilinear, serif-body mixed with mono labels
   ============================================================ */

.tp-btn {
  display: inline-flex; align-items: center; gap: var(--tp-space-2);
  padding: 10px 20px;
  font-family: var(--tp-font-mono);
  font-size: var(--tp-fs-xs);
  font-weight: var(--tp-fw-regular);
  letter-spacing: var(--tp-ls-caps);
  text-transform: uppercase;
  border: 1px solid var(--tp-line-yellow);
  border-radius: var(--tp-radius-none);
  background: transparent;
  color: var(--tp-fg);
  cursor: pointer;
  transition:
    background var(--tp-duration-fast) var(--tp-ease-out),
    border-color var(--tp-duration-fast) var(--tp-ease-out),
    color var(--tp-duration-fast) var(--tp-ease-out);
}
.tp-btn:hover  { background: var(--tp-bg-raised); border-color: var(--tp-yellow); color: var(--tp-yellow); }
.tp-btn:focus-visible { outline: none; box-shadow: var(--tp-shadow-focus); }

.tp-btn--primary {
  background: var(--tp-action);
  color: var(--tp-action-fg);
  border-color: var(--tp-action);
}
.tp-btn--primary:hover  { background: var(--tp-action-hover); border-color: var(--tp-action-hover); color: var(--tp-action-fg); }
.tp-btn--primary:active { background: var(--tp-action-pressed); border-color: var(--tp-action-pressed); }

.tp-btn--danger {
  background: transparent; color: var(--tp-danger); border-color: var(--tp-danger);
}

/* Inputs - recessed, hairline, yellow focus */
.tp-input, .tp-select, .tp-textarea {
  width: 100%;
  padding: 10px 12px;
  font-family: var(--tp-font-serif);
  font-size: var(--tp-fs-md);
  color: var(--tp-fg);
  background: var(--tp-bg-recessed);
  border: 1px solid var(--tp-border-strong);
  border-radius: var(--tp-radius-none);
}
.tp-input::placeholder, .tp-textarea::placeholder {
  color: var(--tp-fg-subtle);
  font-style: italic;
}
.tp-input:focus, .tp-select:focus, .tp-textarea:focus {
  outline: none;
  border-color: var(--tp-yellow);
  box-shadow: var(--tp-shadow-focus);
}
.tp-label {
  display: block;
  font-family: var(--tp-font-mono);
  font-size: var(--tp-fs-xs);
  font-weight: var(--tp-fw-regular);
  letter-spacing: var(--tp-ls-caps);
  text-transform: uppercase;
  color: var(--tp-fg-muted);
  margin-bottom: var(--tp-space-2);
}

/* Pills */
.tp-pill {
  display: inline-block;
  padding: 3px 12px;
  border-radius: var(--tp-radius-pill);
  font-family: var(--tp-font-mono);
  font-size: var(--tp-fs-xs);
  font-weight: var(--tp-fw-regular);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(247,243,247,0.08); color: var(--tp-ink-1);
  border: 1px solid var(--tp-border);
}
.tp-pill--active   { background: var(--tp-success-bg); color: var(--tp-success); border-color: rgba(74,222,128,0.35); }
.tp-pill--running  { background: var(--tp-running-bg); color: var(--tp-running); border-color: rgba(125,211,252,0.35); }
.tp-pill--warning  { background: var(--tp-warning-bg); color: var(--tp-warning); border-color: rgba(251,191,36,0.35); }
.tp-pill--danger   { background: var(--tp-danger-bg);  color: var(--tp-danger);  border-color: rgba(248,113,113,0.35); }
.tp-pill--highlight{ background: var(--tp-yellow); color: var(--tp-action-fg); border-color: var(--tp-yellow); }

/* Cards - hairline-ruled, rectilinear, no rounded-everything */
.tp-card {
  background: var(--tp-bg-surface);
  border: 1px solid var(--tp-border);
  border-radius: var(--tp-radius-sm);
  padding: var(--tp-space-6);
  color: var(--tp-fg-body);
}
.tp-card--plate {
  /* Heavy editorial plate: rectilinear, bracket-ready */
  background: var(--tp-bg-surface);
  border: 1px solid var(--tp-rule);
  border-radius: 0;
  padding: var(--tp-space-12) var(--tp-space-8);
  position: relative;
}
.tp-card--active { border-color: var(--tp-yellow); box-shadow: var(--tp-shadow-glow); }

/* Plate caption - "Fig. 01 - Primary Mark · Aubergine" */
.tp-plate-caption {
  position: absolute;
  bottom: -28px;
  left: 0;
  font-family: var(--tp-font-mono);
  font-size: var(--tp-fs-xs);
  letter-spacing: var(--tp-ls-caps);
  text-transform: uppercase;
  color: var(--tp-yellow-deep);
}