/* ============================================================
   MURRU DEV — Brand System tokens & primitives
   ============================================================ */

/* ---- Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

/* ============================================================
   COLOR TOKENS
   ============================================================ */
:root {
  /* Brand raw scales (stable across themes) */
  --blue-100: #E5ECFF;
  --blue-300: #9DB4FF;
  --blue-500: #2F5BFF;   /* electric blue — core brand */
  --blue-600: #1E40E0;
  --blue-700: #1730B0;

  --gold-300: #FFD27A;
  --gold-400: #FFC24D;   /* electric amber — accent (dark) */
  --gold-500: #FFAA1D;   /* electric amber — accent (light) */
  --gold-600: #E08A00;

  --ink-900: #070B16;    /* deep blue-black */
  --ink-800: #0C1326;
  --ink-700: #131C33;

  --radius-sm: 8px;
  --radius:    14px;
  --radius-lg: 22px;

  --maxw: 1080px;

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---- Light theme (default) ---- */
:root,
[data-theme="light"] {
  --bg:          #F4F6FC;
  --bg-tint:     #ECF0FA;
  --surface:     #FFFFFF;
  --surface-2:   #EEF2FB;
  --border:      #DCE3F2;
  --border-strong:#C5CFE6;
  --text:        #0C1326;
  --text-muted:  #59617A;
  --text-faint:  #8A92AB;

  --primary:        var(--blue-500);
  --primary-strong: var(--blue-600);
  --on-primary:     #FFFFFF;
  --accent:         var(--gold-500);
  --accent-strong:  var(--gold-600);
  --on-accent:      #2A1E04;

  --logo-stroke: var(--blue-500);
  --logo-accent: var(--gold-500);

  --shadow: 0 1px 2px rgba(12,19,38,.05), 0 12px 32px -12px rgba(12,19,38,.18);
  --grid-line: rgba(12,19,38,.05);
}

/* ---- Dark theme ---- */
[data-theme="dark"] {
  --bg:          #070B16;
  --bg-tint:     #0A1020;
  --surface:     #0F1626;
  --surface-2:   #161F35;
  --border:      #222C45;
  --border-strong:#324063;
  --text:        #EAEEF8;
  --text-muted:  #9AA4BE;
  --text-faint:  #69728C;

  --primary:        #5B82FF;
  --primary-strong: #7C9BFF;
  --on-primary:     #06112E;
  --accent:         var(--gold-400);
  --accent-strong:  var(--gold-300);
  --on-accent:      #241803;

  --logo-stroke: #5B82FF;
  --logo-accent: var(--gold-400);

  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 18px 48px -16px rgba(0,0,0,.6);
  --grid-line: rgba(255,255,255,.045);
}

/* ============================================================
   RESET / BASE
   ============================================================ */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.55;
}
h1,h2,h3,h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.05; margin: 0; letter-spacing: -0.02em; }
p { margin: 0; }
a { color: inherit; }

.mono { font-family: var(--font-mono); }
.muted { color: var(--text-muted); }
.faint { color: var(--text-faint); }

/* eyebrow label */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-strong);
  font-weight: 500;
}
[data-theme="dark"] .eyebrow { color: var(--accent); }

/* ============================================================
   LAYOUT
   ============================================================ */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }

section.block {
  padding: 96px 0;
  border-top: 1px solid var(--border);
}
.sec-head { margin-bottom: 48px; max-width: 640px; }
.sec-head h2 { font-size: clamp(28px, 4vw, 40px); margin: 14px 0 12px; }
.sec-head p { color: var(--text-muted); font-size: 17px; }
.sec-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  letter-spacing: 0.1em;
}

/* ============================================================
   MONOGRAM / LOGO
   ============================================================ */
.mono-mark { display: block; }
.mono-mark .mk-base {
  fill: none;
  stroke: var(--logo-stroke);
  stroke-width: 13;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.mono-mark .mk-accent {
  fill: none;
  stroke: var(--logo-accent);
  stroke-width: 13;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.mono-mark .mk-node { fill: var(--logo-accent); }

/* lockup */
.lockup { display: inline-flex; align-items: center; gap: 18px; }
.lockup .wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  white-space: nowrap;
}
.wordmark .w-murru { color: var(--text); }
.wordmark .w-dev { color: var(--primary); }
.wordmark .w-dot { color: var(--accent); }

/* ============================================================
   BUTTONS / CHIPS
   ============================================================ */
.btn {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  border: none; cursor: pointer;
  padding: 12px 20px;
  border-radius: 999px;
  display: inline-flex; align-items: center; gap: 10px;
  transition: transform .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease);
}
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: var(--primary-strong); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border-strong); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

.chip {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: var(--surface);
}

/* ============================================================
   CARDS / GRIDS
   ============================================================ */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.grid { display: grid; gap: 20px; }
@media (max-width: 720px){ .grid { grid-template-columns: 1fr !important; } }