/* ════════════════════════════════════════════════════════════════════
   themes.css - site-wide color themes (every layout loads this LAST)

   Two attributes on <html> drive everything:
     data-theme="light"   light mode (the site default); absent = dark
     data-accent="..."    accent palette for the current mode
       light: teal (default) · indigo · terracotta
       dark:  teal (default) · violet · amber

   Every page already colors itself through the same --lime* variables (main
   accent) plus secondary colors --blue / --green / --pink / --purple (stats, chips,
   highlights). Each theme redefines both, so nothing stays teal by accident;
   hard-coded tints use color-mix() on these variables. Selectors carry two attributes, which
   outranks the base :root / [data-theme="light"] definitions.
   To add a palette: copy one block, change the 7 values, add a swatch in
   assets/js/theme.js.
   ════════════════════════════════════════════════════════════════════ */

/* ── Light accents ─────────────────────────────────────────────────── */
[data-theme="light"][data-accent="indigo"] {
  --blue: #2b6cd4; --green: #5a4fcf; --pink: #8a3fb8; --purple: #7a3fd0;
  --lime: #3b4ccf; --lime-dark: #2c3aa6;
  --lime-glow: rgba(59,76,207,.12); --lime-mid: rgba(59,76,207,.25); --lime-low: rgba(59,76,207,.08);
  --lime-dim: rgba(59,76,207,.04); --lime-line: rgba(59,76,207,.3);
}
[data-theme="light"][data-accent="terracotta"] {
  --blue: #b5651d; --green: #8f6a00; --pink: #a63d40; --purple: #8a4a7a;
  --lime: #b4532a; --lime-dark: #8f3f1e;
  --lime-glow: rgba(180,83,42,.12); --lime-mid: rgba(180,83,42,.25); --lime-low: rgba(180,83,42,.08);
  --lime-dim: rgba(180,83,42,.04); --lime-line: rgba(180,83,42,.3);
}

/* ── Dark accents ──────────────────────────────────────────────────── */
:root:not([data-theme="light"])[data-accent="violet"] {
  --blue: #8ab4ff; --green: #c4a7ff; --pink: #f0a6ff; --purple: #d6c2ff;
  --lime: #a78bfa; --lime-dark: #6d4fd1;
  --lime-glow: rgba(167,139,250,.15); --lime-mid: rgba(167,139,250,.25); --lime-low: rgba(167,139,250,.08);
  --lime-dim: rgba(167,139,250,.04); --lime-line: rgba(167,139,250,.3);
}
:root:not([data-theme="light"])[data-accent="amber"] {
  --blue: #ffcf70; --green: #ffb347; --pink: #ff8a65; --purple: #ffd59a;
  --lime: #f5b041; --lime-dark: #9a5b0b;
  --lime-glow: rgba(245,176,65,.15); --lime-mid: rgba(245,176,65,.25); --lime-low: rgba(245,176,65,.08);
  --lime-dim: rgba(245,176,65,.04); --lime-line: rgba(245,176,65,.3);
}

/* Buttons whose hover color was hard-coded teal follow the accent. */
[data-accent] .nav-cta:hover { background: var(--lime-dark) !important; filter: brightness(.88); }

/* ── Theme picker (opened from the round toggle, bottom-right) ─────── */
.theme-menu {
  position: fixed; right: 1.8rem; bottom: 5.2rem; z-index: 650;
  width: 232px; padding: .9rem; border-radius: 10px;
  background: var(--card-bg); border: 1px solid var(--border2, var(--border));
  box-shadow: 0 14px 40px rgba(0,0,0,.28);
  font-family: 'JetBrains Mono', monospace; color: var(--text);
  opacity: 0; transform: translateY(6px) scale(.98); pointer-events: none;
  transition: opacity .18s, transform .18s;
}
.theme-menu.open { opacity: 1; transform: none; pointer-events: all; }
.theme-menu-label { font-size: .56rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 0 0 .5rem; }
.theme-modes { display: grid; grid-template-columns: 1fr 1fr; gap: .3rem; padding: .25rem; border-radius: 8px; background: var(--surface); margin-bottom: .9rem; }
.theme-modes button {
  font: inherit; font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; cursor: pointer;
  border: 0; border-radius: 6px; padding: .5rem 0; background: transparent; color: var(--muted);
}
.theme-modes button[aria-pressed="true"] { background: var(--lime-low); color: var(--text); box-shadow: inset 0 0 0 1px var(--lime-line); }
.theme-swatches { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; }
.theme-swatches button {
  font: inherit; font-size: .52rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted);
  display: flex; flex-direction: column; align-items: center; gap: .35rem;
  background: transparent; border: 1px solid transparent; border-radius: 8px; padding: .45rem .2rem; cursor: pointer;
}
.theme-swatches button:hover { border-color: var(--border); }
.theme-swatches button[aria-pressed="true"] { border-color: var(--lime); color: var(--text); }
.theme-swatches i { width: 26px; height: 26px; border-radius: 50%; background: var(--sw); box-shadow: inset 0 0 0 2px rgba(255,255,255,.18); }
.theme-swatches button[aria-pressed="true"] i { box-shadow: 0 0 0 2px var(--card-bg), 0 0 0 4px var(--sw); }
#theme-toggle[aria-expanded="true"] { border-color: var(--lime); }
@media (hover: none), (pointer: coarse) { .theme-menu { right: 1.2rem; bottom: 4.6rem; } }
@media print { .theme-menu { display: none !important; } }

/* ── Floating page navigation (assets/js/section-nav.js), every page ──
   ↑ Back to top / ‹ Previous / › Next, stacked bottom-left. Hidden buttons
   take no space, so the stack shrinks to 2 at the first / last section. */
.page-nav { position: fixed !important; left: 1.8rem !important; bottom: 1.8rem !important; top: auto !important; right: auto !important;
  width: auto !important; height: auto !important; padding: 0 !important; margin: 0 !important; background: none !important; border: 0 !important;
  z-index: 600; display: flex !important; flex-direction: column !important; justify-content: flex-end !important; align-items: flex-start !important; gap: .6rem; }
.page-nav #back-to-top, .page-nav .page-nav-btn {
  position: relative !important; left: auto !important; bottom: auto !important;
  width: 46px; height: 46px; border-radius: 50%; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border2, var(--border)); background: var(--card-bg); color: var(--lime);
  box-shadow: 0 4px 18px rgba(0,0,0,.18); transition: border-color .25s, transform .2s, background .3s;
}
.page-nav #back-to-top { opacity: 1 !important; pointer-events: all !important; }
.page-nav #back-to-top:not(.visible), .page-nav .page-nav-btn[hidden] { display: none !important; }
.page-nav #back-to-top:hover, .page-nav .page-nav-btn:hover,
.page-nav #back-to-top:focus-visible, .page-nav .page-nav-btn:focus-visible { border-color: var(--lime); transform: scale(1.08); outline: none; }
/* Hover label: "Next: Experience" slides out to the right of the button. */
.page-nav [data-label]::after {
  content: attr(data-label); position: absolute; left: calc(100% + .6rem); top: 50%; transform: translate(-4px, -50%);
  white-space: nowrap; max-width: 60vw; overflow: hidden; text-overflow: ellipsis;
  font-family: 'JetBrains Mono', monospace; font-size: .62rem; letter-spacing: .06em; text-transform: uppercase;
  color: var(--text); background: var(--card-bg); border: 1px solid var(--border); border-radius: 6px; padding: .4rem .6rem;
  box-shadow: 0 6px 18px rgba(0,0,0,.15); opacity: 0; pointer-events: none; transition: opacity .15s, transform .15s;
}
.page-nav [data-label]:hover::after, .page-nav [data-label]:focus-visible::after { opacity: 1; transform: translate(0, -50%); }
@media (hover: none), (pointer: coarse) {
  .page-nav { left: 1.2rem !important; bottom: 1.2rem !important; gap: .5rem; }
  .page-nav #back-to-top, .page-nav .page-nav-btn { width: 44px; height: 44px; }
  .page-nav [data-label]::after { display: none; }
}
@media print { .page-nav { display: none !important; } }

/* ── Standard footer line, every page ── */
.site-footline { display: flex; justify-content: space-between; flex-wrap: wrap; gap: .5rem 1.5rem; margin-top: 1.4rem; padding-top: 1rem;
  border-top: 1px solid var(--border); font-family: 'JetBrains Mono', monospace; font-size: .6rem; letter-spacing: .06em; color: var(--muted); }
.site-footline a { color: inherit; text-decoration: none; }
.site-footline a:hover { color: var(--lime); }