/* ============================================================
   msrsuvo — shared theme + utilities
   Used by index.html, portfolio.html, blog.html, post.html, admin.html
   ============================================================ */

:root {
  --ink: #0A0E1A;
  --ink2: #0F1424;
  --ink3: #161C30;
  --cream: #F5F3EE;
  --dim: #9AA3B2;
  --accent: #1FB6FF;
  --accent2: #8B5CF6;
  --gold: #FFD66B;
  --emerald: #34D399;
  --red: #F87171;

  --bg: var(--ink);
  --fg: var(--cream);
  --card: rgba(255,255,255,0.04);
  --border: rgba(255,255,255,0.10);
  --muted: var(--dim);
}

[data-theme="light"] {
  --bg: #FAF7F1;
  --fg: #0A0E1A;
  --ink: #FAF7F1;
  --ink2: #F5F0E5;
  --ink3: #EFE9DA;
  --cream: #0A0E1A;
  --dim: #5A6072;
  --card: rgba(10,14,26,0.04);
  --border: rgba(10,14,26,0.10);
  --muted: #5A6072;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', system-ui, -apple-system, 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'cv11','ss01','ss03';
}

/* ========== Glass / cards ========== */
.glass {
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
[data-theme="light"] .glass {
  background: rgba(255,255,255,0.6);
  border-color: rgba(10,14,26,0.08);
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .6rem 1.1rem; border-radius: 999px;
  font-size: .875rem; font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer; user-select: none;
  transition: all .2s ease;
  text-decoration: none;
}
.btn-primary { background: var(--accent); color: var(--ink); }
.btn-primary:hover { box-shadow: 0 0 30px rgba(31,182,255,.4); }
.btn-ghost {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger {
  background: rgba(248,113,113,0.1);
  color: #fca5a5;
  border: 1px solid rgba(248,113,113,0.3);
}
.btn-danger:hover { background: rgba(248,113,113,0.2); }
.btn-sm { padding: .35rem .8rem; font-size: .75rem; }

/* ========== Forms ========== */
.input, .select, .textarea {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: .6rem;
  padding: .65rem .85rem;
  color: var(--fg);
  font-size: .875rem;
  font-family: inherit;
  transition: border .15s ease;
}
[data-theme="light"] .input, [data-theme="light"] .select, [data-theme="light"] .textarea {
  background: rgba(255,255,255,0.7);
}
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.label {
  display: block;
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--muted);
  margin-bottom: .35rem;
  font-weight: 500;
}
.field { margin-bottom: 1rem; }

/* ========== Layout helpers ========== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.25rem; }
@media (min-width: 768px) { .container { padding: 0 2rem; } }

.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ========== Site nav ========== */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,14,26,0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
[data-theme="light"] .site-nav {
  background: rgba(250,247,241,0.85);
}
.site-nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 0;
  gap: 1.5rem;
}
.site-nav .logo {
  font-size: 1.4rem; font-weight: 500;
  color: var(--fg); text-decoration: none;
}
.site-nav .logo .dot { color: var(--accent); }
.site-nav nav { display: flex; gap: 1.5rem; }
.site-nav nav a {
  font-size: .875rem; color: var(--muted);
  text-decoration: none; transition: color .15s ease;
}
.site-nav nav a:hover, .site-nav nav a.active { color: var(--fg); }
@media (max-width: 768px) {
  .site-nav nav { display: none; }
}

/* ========== Footer ========== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 4rem;
  font-size: .8rem;
  color: var(--muted);
  text-align: center;
}

/* ========== Tags / badges ========== */
.tag {
  display: inline-block;
  padding: .2rem .6rem;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  font-size: .7rem;
  color: var(--fg);
}
.tag.accent { background: rgba(31,182,255,0.1); border-color: rgba(31,182,255,0.3); color: var(--accent); }

/* ========== Reveal on scroll ========== */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ========== Utilities ========== */
.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }
.muted { color: var(--muted); }
.center { text-align: center; }
.hidden { display: none !important; }
.spinner {
  width: 1.2rem; height: 1.2rem;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Toast */
.toast {
  position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%) translateY(100px);
  background: var(--ink3);
  color: var(--fg);
  padding: .85rem 1.4rem;
  border-radius: .75rem;
  border: 1px solid var(--border);
  box-shadow: 0 10px 40px rgba(0,0,0,.4);
  font-size: .85rem;
  z-index: 100;
  opacity: 0;
  transition: opacity .25s ease, transform .25s ease;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { border-color: var(--red); }
.toast.success { border-color: var(--emerald); }