/* ========================================================================
   Smart Copy — Design Tokens
   A scratch-pad aesthetic: paper + ink, with marker-on-paper color use.
   ======================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@500;600;700;800&family=Instrument+Sans:wght@400;500;600;700&family=Caveat:wght@500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* ─── Brand palette (raw) ─────────────────────────────────────────── */
  --jet-black:    #2a2d34;
  --blue-bell:    #009ddc;
  --tiger-flame:  #f26430;
  --shamrock:     #009b72;
  --sun-yellow:   #f5c400;
  --dusty-grape:  #6761a8;

  /* ─── Highlighter (marker-on-paper) — low-alpha brand colors ──────── */
  --hl-blue:    rgba(0, 157, 220, 0.22);
  --hl-orange:  rgba(242, 100, 48, 0.22);
  --hl-green:   rgba(0, 155, 114, 0.22);
  --hl-yellow:  rgba(245, 196, 0, 0.38);
  --hl-grape:   rgba(103, 97, 168, 0.22);

  /* ─── Ink tints (text) ────────────────────────────────────────────── */
  --ink:        #2a2d34;
  --ink-soft:   #4a4d54;
  --ink-muted:  #6b6e75;
  --ink-faint:  #9a9da4;

  /* ─── Paper (surfaces) ─ default: off-white paper ─────────────────── */
  --paper:        #fbfaf6;
  --paper-edge:   #f3f1ea;
  --paper-deep:   #ecebe3;
  --paper-line:   rgba(42, 45, 52, 0.06);
  --paper-rule:   rgba(0, 157, 220, 0.16);  /* ruled lines, blue-pencil tint */

  /* ─── Roles ───────────────────────────────────────────────────────── */
  --bg:           var(--paper);
  --bg-muted:     var(--paper-edge);
  --surface:      #ffffff;
  --border:       rgba(42, 45, 52, 0.12);
  --border-soft:  rgba(42, 45, 52, 0.07);
  --border-strong: rgba(42, 45, 52, 0.22);
  --accent:       var(--blue-bell);
  --accent-ink:   #007aab;
  --accent-soft:  rgba(0, 157, 220, 0.10);

  /* ─── Status ──────────────────────────────────────────────────────── */
  --success:      var(--shamrock);
  --success-soft: rgba(0, 155, 114, 0.10);
  --warning:      var(--sun-yellow);
  --warning-ink:  #a8860a;
  --warning-soft: rgba(245, 196, 0, 0.16);
  --danger:       var(--tiger-flame);
  --danger-soft:  rgba(242, 100, 48, 0.10);
  --info:         var(--dusty-grape);
  --info-soft:    rgba(103, 97, 168, 0.10);

  /* ─── Fonts ───────────────────────────────────────────────────────── */
  --font-display: "Syne", system-ui, sans-serif;
  --font-body:    "Instrument Sans", system-ui, sans-serif;
  --font-hand:    "Caveat", "Comic Sans MS", cursive;
  --font-mono:    "JetBrains Mono", ui-monospace, Menlo, monospace;

  /* ─── Spacing scale (4px base) ────────────────────────────────────── */
  --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;

  /* ─── Radius scale ────────────────────────────────────────────────── */
  --r-xs: 2px;
  --r-sm: 4px;   /* default UI radius */
  --r-md: 6px;
  --r-lg: 10px;
  --r-xl: 16px;
  --r-full: 999px;

  /* ─── Shadows — paper laid on a desk ─────────────────────────────── */
  --shadow-1: 0 1px 2px rgba(42, 45, 52, 0.04), 0 1px 1px rgba(42, 45, 52, 0.04);
  --shadow-2: 0 2px 4px rgba(42, 45, 52, 0.05), 0 4px 12px rgba(42, 45, 52, 0.06);
  --shadow-3: 0 4px 8px rgba(42, 45, 52, 0.06), 0 12px 24px rgba(42, 45, 52, 0.08);
  --shadow-4: 0 8px 16px rgba(42, 45, 52, 0.08), 0 24px 48px rgba(42, 45, 52, 0.10);
  --shadow-hard: 4px 4px 0 rgba(42, 45, 52, 0.88);

  /* ─── Type scale ──────────────────────────────────────────────────── */
  --t-12: 12px;
  --t-13: 13px;
  --t-14: 14px;
  --t-16: 16px;
  --t-18: 18px;
  --t-20: 20px;
  --t-24: 24px;
  --t-28: 28px;
  --t-32: 32px;
  --t-40: 40px;
  --t-48: 48px;
  --t-64: 64px;
  --t-80: 80px;
}

/* ─── Background variants ─ for tweak panel ─────────────────────────── */
body[data-paper="cream"] {
  --paper:      #faf5e8;
  --paper-edge: #f1ebd8;
  --paper-deep: #e7dfc6;
  --paper-line: rgba(42, 45, 52, 0.07);
  --paper-rule: rgba(242, 100, 48, 0.18); /* legal pad blue→orange feel */
}
body[data-paper="grey"] {
  --paper:      #f4f5f7;
  --paper-edge: #ebedf0;
  --paper-deep: #dde0e5;
  --paper-line: rgba(42, 45, 52, 0.07);
  --paper-rule: rgba(42, 45, 52, 0.10);
}

/* ─── Base reset ────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, h5 { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; margin: 0; }
p { margin: 0; }
a { color: var(--accent-ink); text-decoration: none; }

/* ─── Paper backgrounds (textures) ──────────────────────────────────── */
.paper-grid {
  background-image:
    linear-gradient(var(--paper-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--paper-line) 1px, transparent 1px);
  background-size: 24px 24px;
}
.paper-ruled {
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 31px,
    var(--paper-rule) 31px,
    var(--paper-rule) 32px
  );
}
.paper-dotted {
  background-image: radial-gradient(var(--paper-line) 1.2px, transparent 1.2px);
  background-size: 18px 18px;
}

/* ─── Marker-on-paper highlighter helpers ───────────────────────────── */
.hl {
  background: linear-gradient(180deg, transparent 38%, var(--hl-yellow) 38%, var(--hl-yellow) 92%, transparent 92%);
  padding: 0 0.15em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
.hl-blue   { background-image: linear-gradient(180deg, transparent 38%, var(--hl-blue)   38%, var(--hl-blue)   92%, transparent 92%); }
.hl-orange { background-image: linear-gradient(180deg, transparent 38%, var(--hl-orange) 38%, var(--hl-orange) 92%, transparent 92%); }
.hl-green  { background-image: linear-gradient(180deg, transparent 38%, var(--hl-green)  38%, var(--hl-green)  92%, transparent 92%); }
.hl-grape  { background-image: linear-gradient(180deg, transparent 38%, var(--hl-grape)  38%, var(--hl-grape)  92%, transparent 92%); }

/* ─── Hand-drawn underline (uses inline SVG) ────────────────────────── */
.ink-underline {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 8' preserveAspectRatio='none'><path d='M2 5 Q 50 1 100 4 T 198 5' fill='none' stroke='%232a2d34' stroke-width='2' stroke-linecap='round'/></svg>");
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 100% 6px;
  padding-bottom: 4px;
}
.ink-underline-blue {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 8' preserveAspectRatio='none'><path d='M2 5 Q 50 1 100 4 T 198 5' fill='none' stroke='%23009ddc' stroke-width='2.5' stroke-linecap='round'/></svg>");
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 100% 6px;
  padding-bottom: 4px;
}

/* Hand-circled emphasis (svg) */
.ink-circle {
  position: relative;
  display: inline-block;
  padding: 2px 10px;
}
.ink-circle::before {
  content: "";
  position: absolute;
  inset: -4px -8px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 60' preserveAspectRatio='none'><path d='M30 8 Q 8 12 6 30 Q 4 52 100 54 Q 196 56 194 30 Q 192 6 100 6 Q 60 6 30 8' fill='none' stroke='%23f26430' stroke-width='2.4' stroke-linecap='round'/></svg>");
  background-repeat: no-repeat;
  background-size: 100% 100%;
  pointer-events: none;
}

/* Hand-arrow */
.hand-arrow {
  display: inline-block;
  font-family: var(--font-hand);
  color: var(--ink-soft);
  font-size: 22px;
  transform: rotate(-4deg);
}

/* ─── Generic doc primitives ────────────────────────────────────────── */
.kicker {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.kicker::before {
  content: "";
  width: 18px;
  height: 1.5px;
  background: var(--ink-muted);
  display: inline-block;
}
.hand-label {
  font-family: var(--font-hand);
  font-weight: 600;
  font-size: 22px;
  color: var(--ink-soft);
  line-height: 1;
}
.mono { font-family: var(--font-mono); font-size: 12px; }
.swatch-meta { font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted); letter-spacing: 0.02em; }

/* Section card */
.section {
  padding: var(--s-16) 0;
}
.section + .section { border-top: 1px dashed var(--border); }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--s-8);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--s-8);
  margin-bottom: var(--s-10);
  flex-wrap: wrap;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.05;
  max-width: 640px;
}
.section-head .lead {
  max-width: 380px;
  color: var(--ink-muted);
  font-size: 15px;
  line-height: 1.6;
}

/* ─── Component samples ─────────────────────────────────────────────── */
.btn {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 18px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform .08s ease, box-shadow .12s ease, background .12s ease;
  line-height: 1;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: var(--shadow-1); }
.btn-primary:hover { background: var(--accent-ink); }
.btn-secondary { background: var(--surface); color: var(--ink); border-color: var(--border-strong); box-shadow: var(--shadow-1); }
.btn-secondary:hover { background: var(--paper-edge); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--paper-edge); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-sm { font-size: 13px; padding: 7px 12px; }
.btn-lg { font-size: 15px; padding: 13px 22px; }

/* Input */
.input {
  font-family: var(--font-body);
  font-size: 14px;
  padding: 10px 12px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
  outline: none;
  width: 100%;
  transition: border-color .12s, box-shadow .12s;
}
.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.label {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
  display: block;
  margin-bottom: 6px;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  border-radius: var(--r-full);
  background: var(--paper-edge);
  color: var(--ink-soft);
  border: 1px solid var(--border);
  line-height: 1.4;
}
.badge .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge-blue   { background: var(--accent-soft);  color: var(--accent-ink); border-color: rgba(0,157,220,.22); }
.badge-green  { background: var(--success-soft); color: var(--success);    border-color: rgba(0,155,114,.22); }
.badge-orange { background: var(--danger-soft);  color: var(--danger);     border-color: rgba(242,100,48,.22); }
.badge-yellow { background: var(--warning-soft); color: var(--warning-ink);border-color: rgba(245,196,0,.30); }
.badge-grape  { background: var(--info-soft);    color: var(--info);       border-color: rgba(103,97,168,.22); }

/* Card */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: var(--s-6);
  box-shadow: var(--shadow-2);
}

/* Brand-logo wordmark */
.wordmark {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.035em;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.wordmark em { font-style: normal; color: var(--accent); }
.wordmark img { width: 28px; height: 28px; }