/* ============================================================
   TOKENS
   ============================================================ */
:root {
  /* Colors */
  --color-bg:          #09090b;
  --color-surface:     #111113;
  --color-border:      #27272a;
  --color-text:        #fafafa;
  --color-muted:       #a1a1aa;
  --color-accent:      #c9a84c;
  --color-accent-dark: #9e7c30;
  --color-accent-glow: rgba(201, 168, 76, 0.18);
  --color-error:       #f87171;
  --color-success:     #4ade80;

  /* Typography */
  --font-sans:   -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-serif:  Georgia, "Times New Roman", serif;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  --weight-normal:    400;
  --weight-medium:    500;
  --weight-semibold:  600;
  --weight-bold:      700;
  --weight-black:     900;

  --leading-tight:  1.2;
  --leading-normal: 1.6;
  --leading-loose:  1.8;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Radii */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   20px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:     0 1px 3px rgba(0,0,0,.4);
  --shadow-md:     0 4px 16px rgba(0,0,0,.5);
  --shadow-accent: 0 0 32px var(--color-accent-glow);

  /* Transitions */
  --transition: 200ms ease;
  --transition-slow: 400ms ease;

  /* Layout */
  --max-w-sm:  480px;
  --max-w-md:  680px;
  --max-w-lg:  860px;
  --max-w-xl:  1100px;
}

/* ============================================================
   RESET
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100dvh;
}

img, video { display: block; max-width: 100%; }
input, textarea, select, button { font: inherit; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
.heading-xl {
  font-size: clamp(var(--text-3xl), 6vw, var(--text-5xl));
  font-weight: var(--weight-black);
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
}

.heading-lg {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
}

.heading-md {
  font-size: clamp(var(--text-xl), 3vw, var(--text-3xl));
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
}

.text-accent { color: var(--color-accent); }
.text-muted  { color: var(--color-muted); }

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-w-lg);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container--sm { max-width: var(--max-w-sm); }
.container--md { max-width: var(--max-w-md); }
.container--xl { max-width: var(--max-w-xl); }

.section {
  padding-block: var(--space-16);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-md);
  font-weight: var(--weight-semibold);
  font-size: var(--text-base);
  cursor: pointer;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--color-accent);
  color: #000;
}

.btn-primary:hover {
  background: #d9b85c;
  box-shadow: var(--shadow-accent);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}

.btn-outline:hover {
  background: var(--color-accent-glow);
}

.btn--lg {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-lg);
  border-radius: var(--radius-lg);
}

.btn--full { width: 100%; }

/* ============================================================
   FORMS
   ============================================================ */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.form-input {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  color: var(--color-text);
  font-size: var(--text-base);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-input::placeholder { color: var(--color-border); }

.form-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

/* ============================================================
   DIVIDER
   ============================================================ */
.divider {
  width: 48px;
  height: 2px;
  background: var(--color-accent);
  border: none;
}

/* ============================================================
   UTILITIES
   ============================================================ */
.text-center { text-align: center; }
.mt-auto     { margin-top: auto; }
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
}