/* =========================================================
   SyllableCounter Design Tokens
   ========================================================= */
:root {
  /* Colors */
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-2: #f6f9ff;             /* very light blue wash */
  --surface-3: #eef4ff;             /* stronger wash */

  --text: #0a1020;
  --text-2: #334155;
  --muted: #64748b;

  --border: rgba(15, 23, 42, 0.12);
  --border-strong: rgba(15, 23, 42, 0.18);

  --blue-50: #eef5ff;
  --blue-100: #dbeaff;
  --blue-200: #b9d7ff;
  --blue-300: #85b6ff;
  --blue-500: #1b74ff;
  --blue-600: #0b5cff;              /* primary */
  --blue-700: #0847d6;              /* hover */
  --blue-800: #0637aa;

  --accent: var(--blue-600);
  --accent-hover: var(--blue-700);

  --shadow-1: 0 1px 2px rgba(2, 8, 23, 0.06);
  --shadow-2: 0 8px 30px rgba(2, 8, 23, 0.10);
  --shadow-3: 0 18px 60px rgba(2, 8, 23, 0.14);

  --ring: 0 0 0 3px rgba(11, 92, 255, 0.18);

  /* Typography */
  --font-sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --fs-12: 0.75rem;
  --fs-13: 0.8125rem;
  --fs-14: 0.875rem;
  --fs-16: 1rem;
  --fs-18: 1.125rem;
  --fs-20: 1.25rem;
  --fs-24: 1.5rem;
  --fs-28: 1.75rem;
  --fs-36: 2.25rem;
  --fs-44: 2.75rem;
  --fs-56: 3.5rem;

  --lh-tight: 1.1;
  --lh-normal: 1.5;
  --lh-relaxed: 1.65;

  /* Layout */
  --container: 1120px;

  /* Radii */
  --r-8: 8px;
  --r-12: 12px;
  --r-16: 16px;
  --r-20: 20px;

  /* Spacing scale */
  --s-2: 0.125rem;
  --s-4: 0.25rem;
  --s-6: 0.375rem;
  --s-8: 0.5rem;
  --s-10: 0.625rem;
  --s-12: 0.75rem;
  --s-14: 0.875rem;
  --s-16: 1rem;
  --s-20: 1.25rem;
  --s-24: 1.5rem;
  --s-28: 1.75rem;
  --s-32: 2rem;
  --s-40: 2.5rem;
  --s-48: 3rem;
  --s-56: 3.5rem;
  --s-64: 4rem;
  --s-80: 5rem;
  --s-96: 6rem;

  /* Motion */
  --ease-out: cubic-bezier(.22, 1, .36, 1);
  --dur-1: 120ms;
  --dur-2: 220ms;
  --dur-3: 420ms;
}

/* Base */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: var(--lh-normal);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.h1 {
  font-size: clamp(var(--fs-36), 2.6vw, var(--fs-56));
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  margin: 0;
}
.h2 {
  font-size: clamp(var(--fs-28), 2vw, var(--fs-44));
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  margin: 0;
}
.h3 {
  font-size: var(--fs-20);
  line-height: 1.25;
  margin: 0;
}
.p {
  margin: var(--s-12) 0 0;
  font-size: var(--fs-16);
  color: var(--text-2);
  line-height: var(--lh-relaxed);
}
.small { font-size: var(--fs-13); }
.subtle { color: var(--muted); }
code {
  font-family: var(--font-mono);
  font-size: 0.95em;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-8);
  padding: 0.1em 0.35em;
}

/* Accessibility */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  padding: var(--s-12) var(--s-16);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-12);
  box-shadow: var(--shadow-2);
  z-index: 9999;
}
.skip-link:focus { left: var(--s-16); top: var(--s-16); }

:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: var(--r-12);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}