/* dfm-base.css — Defimec base: custom properties, reset, typography */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ─── Design Tokens ─── */
:root {
  /* Palette */
  --dfm-bg-dark:         #0E0D0B;
  --dfm-bg-dark-alt:     #161410;
  --dfm-bg-dark-card:    #1C1916;
  --dfm-bg-light:        #F5F0E8;
  --dfm-bg-white:        #FAFAF8;
  --dfm-border-dark:     rgba(245,240,232,0.08);
  --dfm-border-dark-mid: rgba(245,240,232,0.14);
  --dfm-border-light:    rgba(14,13,11,0.12);

  /* Amber/Forge Accent */
  --dfm-amber:           #D97706;
  --dfm-amber-aa-light:  #92400E;
  --dfm-amber-muted:     #78350F;
  --dfm-amber-glow:      rgba(217,119,6,0.18);

  /* Foreground */
  --dfm-fg-dark-1:       #F5F0E8;   /* ratio ~16:1 vs dark */
  --dfm-fg-dark-2:       #9C9188;   /* ratio ~5.2:1 vs dark — AA */
  --dfm-fg-dark-3:       #6B6059;   /* decorative only */
  --dfm-fg-light-1:      #0E0D0B;   /* ratio ~16:1 vs light */
  --dfm-fg-light-2:      #52473C;   /* ratio ~7.2:1 vs light — AA */

  /* Chain Colors (decorative — not for text on dark bg) */
  --dfm-chain-sol:       #9945FF;
  --dfm-chain-base:      #0052FF;
  --dfm-chain-arb:       #28A0F0;

  /* Status */
  --dfm-danger:          #EF4444;
  --dfm-danger-on-dark:  #FCA5A5;
  --dfm-success:         #10B981;

  /* Typography */
  --dfm-font-sans:       'Inter', system-ui, -apple-system, sans-serif;
  --dfm-font-mono:       'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* Font scale */
  --dfm-h1:              clamp(2.5rem, 5vw, 4rem);
  --dfm-h2:              clamp(1.75rem, 3vw, 2.5rem);
  --dfm-h3:              1.25rem;
  --dfm-body:            1rem;
  --dfm-small:           0.875rem;
  --dfm-mono:            0.875rem;

  /* Spacing */
  --dfm-section-py:      clamp(64px, 8vw, 112px);
  --dfm-container-w:     1200px;
  --dfm-gutter:          clamp(20px, 5vw, 48px);

  /* Radius */
  --dfm-radius-sm:       4px;
  --dfm-radius-md:       8px;
  --dfm-radius-lg:       12px;
  --dfm-radius-xl:       16px;

  /* Transitions */
  --dfm-trans-fast:      150ms ease;
  --dfm-trans-med:       250ms ease;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--dfm-font-sans);
  font-size: var(--dfm-body);
  line-height: 1.65;
  background: var(--dfm-bg-dark);
  color: var(--dfm-fg-dark-1);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.dfm-page--light-top {
  background: var(--dfm-bg-white);
  color: var(--dfm-fg-light-1);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; }
table { border-collapse: collapse; width: 100%; }

/* ─── Container ─── */
.dfm-container {
  width: 100%;
  max-width: var(--dfm-container-w);
  margin: 0 auto;
  padding-left: var(--dfm-gutter);
  padding-right: var(--dfm-gutter);
}

/* ─── Typography ─── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--dfm-font-sans);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.dfm-section--dark h1,
.dfm-section--dark h2,
.dfm-section--dark h3,
.dfm-section--dark h4 {
  color: var(--dfm-fg-dark-1);
}

.dfm-section--light h1,
.dfm-section--light h2,
.dfm-section--light h3,
.dfm-section--light h4,
.dfm-section--white h1,
.dfm-section--white h2,
.dfm-section--white h3,
.dfm-section--white h4 {
  color: var(--dfm-fg-light-1);
}

p { line-height: 1.7; }

.dfm-section--dark p,
.dfm-section--dark li {
  color: var(--dfm-fg-dark-2);
}

.dfm-section--light p,
.dfm-section--light li,
.dfm-section--white p,
.dfm-section--white li {
  color: var(--dfm-fg-light-2);
}

code, .dfm-mono {
  font-family: var(--dfm-font-mono);
  font-size: var(--dfm-mono);
  background: var(--dfm-bg-dark-card);
  color: var(--dfm-amber);
  padding: 2px 6px;
  border-radius: var(--dfm-radius-sm);
  line-height: 1.4;
}

body.dfm-page--light-top code,
body.dfm-page--light-top .dfm-mono {
  background: rgba(14,13,11,0.07);
  color: var(--dfm-amber-aa-light);
}

/* ─── Eyebrow label ─── */
.dfm-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.dfm-section--dark .dfm-eyebrow {
  color: var(--dfm-amber);
}

.dfm-section--light .dfm-eyebrow,
.dfm-section--white .dfm-eyebrow {
  color: var(--dfm-amber-aa-light);
}

/* ─── Buttons ─── */
.dfm-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--dfm-radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  transition: all var(--dfm-trans-fast);
  white-space: nowrap;
  border: 2px solid transparent;
  text-decoration: none;
}

/* Primary Amber — any bg */
.dfm-btn--primary {
  background: var(--dfm-amber);
  color: #0E0D0B;
  border-color: var(--dfm-amber);
}
.dfm-btn--primary:hover {
  background: #B45309;
  border-color: #B45309;
}

/* Outline amber on dark */
.dfm-btn--outline-dark {
  background: transparent;
  color: var(--dfm-amber);
  border-color: var(--dfm-amber);
}
.dfm-btn--outline-dark:hover {
  background: var(--dfm-amber-glow);
}

/* Ghost on dark */
.dfm-btn--ghost-dark {
  background: transparent;
  color: var(--dfm-fg-dark-1);
  border-color: var(--dfm-border-dark-mid);
}
.dfm-btn--ghost-dark:hover {
  border-color: rgba(245,240,232,0.3);
  color: #fff;
}

/* Outline on light */
.dfm-btn--outline-light {
  background: transparent;
  color: var(--dfm-fg-light-1);
  border-color: var(--dfm-fg-light-1);
}
.dfm-btn--outline-light:hover {
  background: var(--dfm-fg-light-1);
  color: var(--dfm-bg-white);
}

/* Ghost on light */
.dfm-btn--ghost-light {
  background: transparent;
  color: var(--dfm-fg-light-2);
  border-color: var(--dfm-border-light);
}
.dfm-btn--ghost-light:hover {
  border-color: var(--dfm-fg-light-1);
  color: var(--dfm-fg-light-1);
}

/* Small variant */
.dfm-btn--sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

/* ─── Section backgrounds ─── */
.dfm-section--dark    { background: var(--dfm-bg-dark); }
.dfm-section--dark-alt { background: var(--dfm-bg-dark-alt); }
.dfm-section--light   { background: var(--dfm-bg-light); }
.dfm-section--white   { background: var(--dfm-bg-white); }

/* ─── Section spacing ─── */
.dfm-section {
  padding-top: var(--dfm-section-py);
  padding-bottom: var(--dfm-section-py);
}

.dfm-section--tight {
  padding-top: clamp(40px, 5vw, 64px);
  padding-bottom: clamp(40px, 5vw, 64px);
}

/* ─── Cards ─── */
.dfm-card {
  background: var(--dfm-bg-dark-card);
  border: 1px solid var(--dfm-border-dark);
  border-radius: var(--dfm-radius-lg);
  padding: 28px;
}

.dfm-card--light {
  background: var(--dfm-bg-white);
  border: 1px solid var(--dfm-border-light);
  border-radius: var(--dfm-radius-lg);
  padding: 28px;
}

/* ─── Mono/code blocks ─── */
.dfm-code-block {
  font-family: var(--dfm-font-mono);
  font-size: 0.8125rem;
  line-height: 1.5;
  background: #0A0908;
  border: 1px solid var(--dfm-border-dark);
  border-radius: var(--dfm-radius-md);
  padding: 20px 24px;
  overflow-x: auto;
  color: var(--dfm-fg-dark-1);
}

.dfm-code-block .token-key   { color: var(--dfm-amber); }
.dfm-code-block .token-val   { color: #86EFAC; }
.dfm-code-block .token-str   { color: #93C5FD; }
.dfm-code-block .token-num   { color: #F9A8D4; }
.dfm-code-block .token-comment { color: var(--dfm-fg-dark-3); }

/* ─── Focus styles ─── */
:focus-visible {
  outline: 2px solid var(--dfm-amber);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ─── Utility ─── */
.dfm-sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.dfm-text-amber       { color: var(--dfm-amber); }
.dfm-text-amber-light { color: var(--dfm-amber-aa-light); }
.dfm-text-danger      { color: var(--dfm-danger-on-dark); }
.dfm-text-success     { color: var(--dfm-success); }

/* ─── Divider ─── */
.dfm-divider {
  border: none;
  border-top: 1px solid var(--dfm-border-dark);
  margin: 0;
}

body.dfm-page--light-top .dfm-divider {
  border-top-color: var(--dfm-border-light);
}

/* ─── Fade-in animation (failsafe after 600ms) ─── */
.dfm-fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.dfm-fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Chain indicator dots ─── */
.dfm-chain-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dfm-chain-dot--sol  { background: var(--dfm-chain-sol); }
.dfm-chain-dot--base { background: var(--dfm-chain-base); }
.dfm-chain-dot--arb  { background: var(--dfm-chain-arb); }

/* ─── Responsive helpers ─── */
@media (max-width: 768px) {
  .dfm-hide-mobile { display: none !important; }
}
@media (min-width: 769px) {
  .dfm-hide-desktop { display: none !important; }
}