/* ============================================
   MOF Explorer — Common Stylesheet
   ============================================ */

:root {
  /* --- dark (default) --- */
  --nb0: #04091a;
  --nb1: #070d24;
  --nb2: #0a1535;
  --nb3: #0f2060;
  --bl:  #2563eb;
  --bg:  #3b82f6;
  --bl2: #60a5fa;
  --bpal:#bfdbfe;
  --cu:  #fb923c;
  --ac:  #06b6d4;
  --gold:#f59e0b;
  --goldl:#fbbf24;
  --ok:  #22c55e;
  --err: #ef4444;
  --tx:  #e2e8f0;
  --txm: #94a3b8;
  --txd: #334155;
  --card:      rgba(10,21,53,0.75);
  --border:    rgba(59,130,246,0.18);
  --nav-bg:    rgba(4,9,26,0.72);
  --input-bg:  rgba(4,9,26,0.55);
  --input-bg2: rgba(4,9,26,0.75);
  --body-grad-a: rgba(37,99,235,0.10);
  --body-grad-b: rgba(15,32,96,0.45);
  --body-base:   var(--nb0);
}

/* --- light theme overrides --- */
:root[data-theme="light"] {
  --nb0: #f1f5f9;
  --nb1: #e2e8f0;
  --nb2: #ffffff;
  --nb3: #c7d2fe;
  --bl:  #2563eb;
  --bg:  #3b82f6;
  --bl2: #1d4ed8;
  --bpal:#1e3a8a;
  --tx:  #0f172a;
  --txm: #475569;
  --txd: #94a3b8;
  --card:      rgba(255,255,255,0.92);
  --border:    rgba(37,99,235,0.22);
  --nav-bg:    rgba(255,255,255,0.82);
  --input-bg:  rgba(255,255,255,0.85);
  --input-bg2: #ffffff;
  --body-grad-a: rgba(96,165,250,0.18);
  --body-grad-b: rgba(199,210,254,0.55);
  --body-base:   #f1f5f9;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--nb0);
  color: var(--tx);
  font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

body {
  background:
    radial-gradient(ellipse at top, var(--body-grad-a), transparent 55%),
    radial-gradient(ellipse at bottom right, var(--body-grad-b), transparent 60%),
    var(--body-base);
  transition: background 0.4s ease, color 0.4s ease;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Orbitron', sans-serif;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--tx);
}

a {
  color: var(--bl2);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover { color: var(--bpal); }

/* ---------- NAV ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 60px;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  transition: background 0.4s ease, border-color 0.4s ease;
}
.nav-right { display: flex; align-items: center; gap: 0.4rem; }

.theme-toggle {
  width: 38px; height: 36px;
  border-radius: 8px;
  background: rgba(37,99,235,0.10);
  border: 1px solid var(--border);
  color: var(--tx);
  font-size: 1rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}
.theme-toggle:hover {
  border-color: rgba(59,130,246,0.5);
  background: rgba(37,99,235,0.18);
  transform: rotate(15deg);
}

.nav .logo {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  background: linear-gradient(135deg, var(--bl2), var(--bpal));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.08em;
}

.nav ul {
  list-style: none;
  display: flex;
  gap: 0.4rem;
  align-items: center;
}

.nav a {
  display: inline-block;
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  color: var(--txm);
  font-size: 0.92rem;
  font-weight: 500;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}
.nav a:hover {
  color: var(--tx);
  background: rgba(37,99,235,0.10);
}
.nav a.active {
  color: var(--bpal);
  background: rgba(37,99,235,0.18);
  border-color: rgba(59,130,246,0.35);
}

.nav .ham {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--tx);
  width: 38px; height: 36px;
  border-radius: 8px;
  font-size: 1.1rem;
  cursor: pointer;
}

@media (max-width: 820px) {
  .nav ul {
    position: absolute;
    top: 60px; right: 0;
    flex-direction: column;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    border-left: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem;
    min-width: 200px;
    transform: translateX(100%);
    transition: transform 0.25s ease;
  }
  .nav ul.open { transform: translateX(0); }
  .nav .ham { display: inline-flex; align-items: center; justify-content: center; }
  .nav a { width: 100%; }
}

/* Light theme — tweak hardcoded surfaces */
:root[data-theme="light"] .nav a { color: var(--txm); }
:root[data-theme="light"] .nav a:hover { color: var(--tx); background: rgba(37,99,235,0.08); }
:root[data-theme="light"] .nav a.active {
  color: var(--bl);
  background: rgba(37,99,235,0.12);
  border-color: rgba(37,99,235,0.30);
}
:root[data-theme="light"] .nav .logo {
  background: linear-gradient(135deg, var(--bl), var(--bpal));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
:root[data-theme="light"] .theme-toggle { background: rgba(37,99,235,0.08); }
:root[data-theme="light"] .glow-card:hover { box-shadow: 0 12px 30px -6px rgba(37,99,235,0.20); }
:root[data-theme="light"] .badge { background: rgba(37,99,235,0.10); color: var(--bl); }
:root[data-theme="light"] .footer { color: var(--txm); }

/* ---------- LAYOUT ---------- */
.page {
  padding-top: 60px;
  position: relative;
  z-index: 1;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

@media (max-width: 820px) {
  .container { padding: 1.5rem 1.25rem; }
}

/* ---------- CARDS ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem;
  transition: all 0.2s ease;
}
.card:hover {
  border-color: rgba(59,130,246,0.40);
}

.glow-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}
.glow-card:hover {
  transform: translateY(-4px);
  border-color: rgba(96,165,250,0.55);
  box-shadow: 0 12px 36px -8px rgba(37,99,235,0.35);
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1.1rem;
  border-radius: 8px;
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--tx);
  transition: all 0.2s ease;
  text-decoration: none;
}
.btn:hover {
  border-color: rgba(59,130,246,0.55);
  background: rgba(37,99,235,0.10);
}
.btn:focus-visible,
.theme-toggle:focus-visible,
.nav a:focus-visible {
  outline: 2px solid var(--bl2);
  outline-offset: 2px;
}
.glow-card:focus-visible {
  outline: 2px solid var(--bl2);
  outline-offset: 4px;
}

.btn-primary {
  background: rgba(37,99,235,0.25);
  border: 1px solid rgba(59,130,246,0.50);
  color: var(--bpal);
}
.btn-primary:hover {
  background: rgba(37,99,235,0.40);
  border-color: var(--bl2);
}

.btn-accent {
  background: rgba(245,158,11,0.18);
  border: 1px solid rgba(245,158,11,0.45);
  color: var(--goldl);
}
.btn-accent:hover {
  background: rgba(245,158,11,0.28);
  border-color: var(--gold);
}

.btn-ghost {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--txm);
}
.btn-ghost:hover {
  color: var(--tx);
}

/* ---------- BADGES ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.7rem;
  font-size: 0.72rem;
  font-weight: 500;
  border-radius: 100px;
  background: rgba(37,99,235,0.15);
  border: 1px solid rgba(59,130,246,0.30);
  color: var(--bl2);
  letter-spacing: 0.04em;
}
.badge-gold {
  background: rgba(245,158,11,0.15);
  border-color: rgba(245,158,11,0.40);
  color: var(--goldl);
}
.badge-ok {
  background: rgba(34,197,94,0.15);
  border-color: rgba(34,197,94,0.40);
  color: var(--ok);
}
.badge-cu {
  background: rgba(251,146,60,0.15);
  border-color: rgba(251,146,60,0.40);
  color: var(--cu);
}

/* ---------- TEXT UTIL ---------- */
.muted { color: var(--txm); }
.dim   { color: var(--txd); }
.center{ text-align: center; }
.mono  { font-family: 'JetBrains Mono', 'Courier New', monospace; }

.h-orb { font-family: 'Orbitron', sans-serif; }
.gradient-text {
  background: linear-gradient(135deg, #93c5fd 0%, #3b82f6 50%, #1e3a8a 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- ANIMATIONS ---------- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.35; }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.05); }
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes spinRev {
  from { transform: rotate(360deg); }
  to   { transform: rotate(0deg); }
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-10px); }
  40% { transform: translateX(10px); }
  60% { transform: translateX(-6px); }
  80% { transform: translateX(6px); }
}

.section-fade { animation: fadeIn 0.5s ease both; }

/* ---------- PARTICLE BG CANVAS ---------- */
#bgCanvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  width: 100vw;
  height: 100vh;
}

/* ---------- FOOTER ---------- */
.footer {
  text-align: center;
  padding: 2.5rem 1rem 2rem;
  color: var(--txm);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  margin-top: 4rem;
}

/* ---------- FORMS ---------- */
input[type="text"],
input[type="number"],
input[type="date"],
textarea,
select {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--tx);
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 0.95rem;
  padding: 0.65rem 0.85rem;
  border-radius: 10px;
  transition: all 0.2s ease;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--bl2);
  background: var(--input-bg2);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.18);
}
textarea { resize: vertical; min-height: 90px; font-family: inherit; }

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--txm);
  margin-bottom: 0.4rem;
}

/* ---------- SCROLLBAR ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--nb0); }
::-webkit-scrollbar-thumb {
  background: rgba(59,130,246,0.25);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(59,130,246,0.45); }

/* ---------- PRINT ---------- */
@media print {
  .nav, .footer, .no-print, #bgCanvas { display: none !important; }
  body { background: #fff !important; color: #1a1a1a !important; }
  .page { padding-top: 0 !important; }
}