/* ──────────────────────────────────────────────
   base.css — shared design tokens, fonts, reset,
   navigation and primitives for devploit.dev.
   Single source of truth: change tokens here once.
   ────────────────────────────────────────────── */

/* ── SELF-HOSTED FONTS ── */
/* JetBrains Mono and Syne are variable fonts: one file per
   subset serves every weight via the font-weight range. */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url('/assets/fonts/jetbrains-mono-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url('/assets/fonts/jetbrains-mono-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Syne';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('/assets/fonts/syne-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Syne';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('/assets/fonts/syne-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ── DESIGN TOKENS ── */
:root {
  /* Dark-only site: keep native UI (scrollbars, form controls) dark too. */
  color-scheme: dark;
  --color-bg:        #0c0c0e;
  --color-surface:   #18181c;
  --color-surface-hi:#1d1d22;
  --color-panel:     #131317;
  --color-border:    #1e1e24;
  --color-border-md: #2a2a30;
  --color-text:      #f0ede6;
  --color-muted:     #aaa79f;
  --color-subtle:    #8a867d;
  --color-accent:    #e88c40;
  --color-accent-soft: rgba(232, 140, 64, 0.16);
  --color-accent-dim:#7a4a20;
  --page-max:        1180px;
  --hero-max:        760px;
  --glow-soft:       radial-gradient(circle at top left, rgba(232, 140, 64, 0.14), transparent 46%);
  --grid-bg:         linear-gradient(180deg, rgba(255,255,255,0.015), transparent 38%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: 'Syne', sans-serif;
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image:
    linear-gradient(to bottom, rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(to right, rgba(255,255,255,0.02) 1px, transparent 1px),
    radial-gradient(circle at top left, rgba(232, 140, 64, 0.08), transparent 28%);
  background-size: 100% 32px, 32px 100%, auto;
}

a {
  color: inherit;
  text-decoration: none;
}

.shell {
  width: min(calc(100% - 48px), var(--page-max));
  margin: 0 auto;
}

/* Skip link for keyboard users */
.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 200;
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  padding: 8px 12px;
  border-radius: 4px;
}

.skip-link:focus {
  top: 12px;
}

/* Focus visible for keyboard nav */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Scroll offset for sticky nav */
[id] {
  scroll-margin-top: 72px;
}

/* ── NAV ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(24, 24, 28, 0.88);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}

.nav-shell {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-accent);
  white-space: nowrap;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links {
  display: flex;
  gap: 32px;
}

/* Supports both markups: index uses `.nav-links a`, inner pages use `.nav-link` */
.nav-links a,
.nav-link {
  position: relative;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--color-muted);
  transition: color 150ms;
}

.nav-links a::after,
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 150ms;
}

.nav-links a:hover,
.nav-link:hover {
  color: var(--color-text);
}

.nav-links a:hover::after,
.nav-links a.active,
.nav-link:hover::after,
.nav-link.active {
  color: var(--color-accent);
}

.nav-links a.active::after,
.nav-links a:hover::after,
.nav-link.active::after,
.nav-link:hover::after {
  transform: scaleX(1);
}

/* ── MOBILE NAV TOGGLE ── */
/* Hidden on desktop and when JS hasn't enhanced the nav. */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  background: none;
  border: 1px solid var(--color-border-md);
  border-radius: 6px;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  margin: 0 auto;
  background: var(--color-text);
  transition: transform 150ms, opacity 150ms;
}

.nav[data-nav-enhanced].is-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav[data-nav-enhanced].is-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav[data-nav-enhanced].is-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── RESPONSIVE NAV ── */
@media (max-width: 768px) {
  .shell {
    width: min(calc(100% - 32px), var(--page-max));
  }

  /* No-JS fallback: links stack and wrap (original behavior) */
  .nav:not([data-nav-enhanced]) .nav-shell {
    min-height: auto;
    padding: 12px 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .nav:not([data-nav-enhanced]) .nav-right {
    width: 100%;
    justify-content: space-between;
    gap: 16px;
  }

  .nav:not([data-nav-enhanced]) .nav-links {
    flex-wrap: wrap;
    gap: 16px;
  }

  /* JS-enhanced: collapsible dropdown menu */
  .nav[data-nav-enhanced] .nav-toggle {
    display: flex;
  }

  .nav[data-nav-enhanced] .nav-right {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 20px;
    background: rgba(18, 18, 21, 0.98);
    border-bottom: 1px solid var(--color-border);
  }

  .nav[data-nav-enhanced].is-open .nav-right {
    display: flex;
  }

  .nav[data-nav-enhanced] .nav-links {
    flex-direction: column;
    gap: 0;
    width: 100%;
  }

  .nav[data-nav-enhanced] .nav-links a,
  .nav[data-nav-enhanced] .nav-link {
    display: block;
    width: 100%;
    padding: 12px 0;
    font-size: 14px;
    border-bottom: 1px solid var(--color-border);
  }

  .nav[data-nav-enhanced] .nav-links a::after,
  .nav[data-nav-enhanced] .nav-link::after {
    display: none;
  }
}

@media (max-width: 560px) {
  .nav:not([data-nav-enhanced]) .nav-right {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}