/* =============================================================
   Futuristic overlay for the Minimal Mistakes academic theme
   -------------------------------------------------------------
   Dark deep-space background with a subtle grid, cyan/violet
   accents, monospace-inflected headings, glassy cards, and
   glowing focus states. Loaded after main.css so all rules
   override the base theme.
   ============================================================= */

:root {
  --bg-0: #05070d;
  --bg-1: #0a0f1c;
  --bg-2: #101828;
  --bg-3: #17203a;
  --surface: rgba(15, 23, 42, 0.72);
  --surface-strong: rgba(15, 23, 42, 0.92);
  --border: rgba(120, 180, 255, 0.14);
  --border-strong: rgba(120, 180, 255, 0.28);

  --text-0: #eaf1ff;
  --text-1: #c5d0e6;
  --text-2: #8a98b8;
  --text-3: #5b6784;

  --accent: #22d3ee;      /* cyan */
  --accent-2: #a78bfa;    /* violet */
  --accent-3: #34d399;    /* mint */
  --danger: #fb7185;

  --grad-1: linear-gradient(135deg, #22d3ee 0%, #a78bfa 55%, #f472b6 100%);
  --glow-cyan: 0 0 24px rgba(34, 211, 238, 0.35);
  --glow-violet: 0 0 24px rgba(167, 139, 250, 0.35);

  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 18px;

  --font-sans: 'Inter', 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* ---------- Global background ---------- */
html, body {
  background: var(--bg-0);
  color: var(--text-1);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  position: relative;
  background:
    radial-gradient(1200px 700px at 15% -10%, rgba(34, 211, 238, 0.10), transparent 60%),
    radial-gradient(900px 600px at 85% 10%, rgba(167, 139, 250, 0.10), transparent 60%),
    radial-gradient(1000px 700px at 50% 120%, rgba(52, 211, 153, 0.06), transparent 60%),
    var(--bg-0);
  min-height: 100vh;
}

/* subtle grid */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(120, 180, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 180, 255, 0.045) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(1000px 700px at 50% 20%, #000 40%, transparent 90%);
  -webkit-mask-image: radial-gradient(1000px 700px at 50% 20%, #000 40%, transparent 90%);
}

.page__content, .masthead, #main, .greedy-nav, .archive, .page {
  position: relative;
  z-index: 1;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6,
.page__title, .page__meta,
.archive__item-title, .archive__subtitle,
.sidebar h3 {
  font-family: var(--font-display);
  color: var(--text-0);
  letter-spacing: -0.01em;
}

h1, .page__title {
  font-weight: 700;
  letter-spacing: -0.02em;
}

h2 {
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.35em;
  margin-top: 2.2em;
}

/* Accent bar on CV section headers */
.page__content h1::before,
.page__content h2::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 0.6em;
  border-radius: 2px;
  background: var(--grad-1);
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
}

code, pre, kbd, samp, tt {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

code {
  color: var(--accent);
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.2);
  border-radius: var(--radius-sm);
  padding: 0.1em 0.35em;
}

pre, .highlight, .highlighter-rouge {
  background: var(--bg-2) !important;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

/* ---------- Links ---------- */
a {
  color: var(--accent);
  text-decoration: none;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-size: 0 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size 0.25s ease, color 0.2s ease;
}
a:hover, a:focus {
  color: var(--accent-2);
  background-image: linear-gradient(var(--accent-2), var(--accent-2));
  background-size: 100% 1px;
}

/* ---------- Masthead / top navigation ---------- */
.masthead {
  background: linear-gradient(180deg, rgba(5, 7, 13, 0.9) 0%, rgba(5, 7, 13, 0.55) 100%);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(120,180,255,0.05), 0 10px 30px rgba(0,0,0,0.35);
}

.masthead__inner-wrap {
  padding: 1em;
}

.site-title {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-0) !important;
  background: var(--grad-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.site-title::before {
  content: "◈ ";
  -webkit-text-fill-color: var(--accent);
  color: var(--accent);
}

.greedy-nav {
  background: transparent;
}

.greedy-nav a {
  color: var(--text-1) !important;
  font-weight: 500;
  background-image: none;
  padding: 0.5em 0.9em;
  border-radius: var(--radius-sm);
  transition: color 0.2s ease, background 0.2s ease;
}
.greedy-nav a:hover {
  color: var(--accent) !important;
  background: rgba(34, 211, 238, 0.08);
}

.greedy-nav .visible-links a::before {
  background: var(--grad-1);
  height: 2px;
}

/* ---------- Author sidebar profile card ---------- */
.sidebar.sticky {
  color: var(--text-1);
}

.author__avatar img {
  border: 2px solid transparent;
  background:
    linear-gradient(var(--bg-1), var(--bg-1)) padding-box,
    var(--grad-1) border-box;
  border-radius: 50%;
  box-shadow: var(--glow-cyan), 0 8px 20px rgba(0,0,0,0.5);
}

.author__name {
  font-family: var(--font-display);
  color: var(--text-0);
  font-weight: 600;
}

.author__bio {
  color: var(--text-2);
}

.author__urls {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.author__urls li a {
  color: var(--text-1);
  background-image: none;
}
.author__urls li a:hover {
  color: var(--accent);
}
.author__urls li a .fa,
.author__urls li a .ai {
  color: var(--accent);
}

/* ---------- Cards, archives, portfolio ---------- */
.archive__item,
.list__item,
.page__inner-wrap {
  color: var(--text-1);
}

.archive__item {
  padding: 1.25em;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  margin-bottom: 1.5em;
}
.archive__item:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: 0 12px 30px rgba(0,0,0,0.45), 0 0 0 1px rgba(34,211,238,0.15);
}

.archive__item-title {
  color: var(--text-0);
  font-family: var(--font-display);
  font-weight: 600;
  margin-top: 0;
}
.archive__item-title a {
  color: var(--text-0);
  background-image: none;
}
.archive__item-title a:hover {
  color: var(--accent);
}

.archive__item-excerpt {
  color: var(--text-2);
}

.page__meta,
.page__date,
.archive__item-info,
.archive__subtitle {
  font-family: var(--font-mono);
  color: var(--text-3);
  font-size: 0.85em;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

/* ---------- Page content surfaces ---------- */
.page__content {
  color: var(--text-1);
}

.page__content ul, .page__content ol {
  color: var(--text-1);
}

.page__content blockquote {
  border-left: 3px solid var(--accent);
  background: rgba(34, 211, 238, 0.05);
  color: var(--text-1);
  border-radius: var(--radius-sm);
  padding: 0.8em 1em;
}

hr {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
  margin: 2.5em 0;
}

/* Emphasise strong/bold in dark theme */
strong, b { color: var(--text-0); }

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: rgba(34, 211, 238, 0.08);
  color: var(--accent);
  padding: 0.55em 1em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
  background-image: none;
}
.btn:hover {
  transform: translateY(-1px);
  color: var(--text-0);
  background: rgba(34, 211, 238, 0.18);
  box-shadow: var(--glow-cyan);
}
.btn--primary {
  background: var(--grad-1);
  color: #0a0f1c;
  border: none;
}
.btn--primary:hover {
  color: #0a0f1c;
  filter: brightness(1.05);
  box-shadow: var(--glow-violet);
}

/* ---------- Tables ---------- */
table {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
th {
  background: var(--bg-2);
  color: var(--text-0);
  font-family: var(--font-display);
  border-bottom: 1px solid var(--border-strong);
}
td, th {
  border-color: var(--border);
}

/* ---------- Footer ---------- */
.page__footer {
  background: linear-gradient(180deg, transparent, rgba(5,7,13,0.9));
  border-top: 1px solid var(--border);
  color: var(--text-2);
}
.page__footer a { color: var(--text-1); }
.page__footer a:hover { color: var(--accent); }
.page__footer-copyright { color: var(--text-3); font-family: var(--font-mono); font-size: 0.8em; }

/* ---------- Focus rings ---------- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ---------- Subtle scan-line accent for h1 on home ---------- */
.page__hero-image,
.page__hero {
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
}

/* ---------- Selection ---------- */
::selection {
  background: rgba(34, 211, 238, 0.35);
  color: #fff;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}