:root {
  --bg: #0b0d12;
  --bg-card: rgba(20,24,36,0.78);
  --bg-card-hover: rgba(28,34,50,0.90);
  --text: #f0f2f8;
  --text-secondary: #aab0c4;
  --text-muted: #7a7fa0;
  --border: rgba(255,255,255,0.12);
  --shadow: rgba(0,0,0,0.6);
  --shadow-hover: rgba(90,120,255,0.20);
  --accent: #5e7eff;
  --accent-hover: #7a94ff;
  --danger: #ff4757;
  --glow: rgba(94,126,255,0.18);
  --tooltip-bg: rgba(16,18,28,0.95);
  --tooltip-border: rgba(255,255,255,0.10);
  --admin-bg: #0b0d12;
  --admin-card: rgba(20,24,36,0.88);
  --bg-gradient: radial-gradient(ellipse at 30% 20%, rgba(94,126,255,0.10) 0%, transparent 55%),
                 radial-gradient(ellipse at 70% 80%, rgba(156,80,255,0.08) 0%, transparent 55%);
}

[data-theme="light"] {
  --bg: #eef0f5;
  --bg-card: rgba(255,255,255,0.78);
  --bg-card-hover: rgba(255,255,255,0.93);
  --text: #161824;
  --text-secondary: #50546e;
  --text-muted: #73779a;
  --border: rgba(0,0,0,0.10);
  --shadow: rgba(0,0,0,0.06);
  --shadow-hover: rgba(50,80,200,0.15);
  --accent: #4a6cf7;
  --accent-hover: #5f7dfa;
  --glow: rgba(74,108,247,0.15);
  --tooltip-bg: rgba(255,255,255,0.95);
  --tooltip-border: rgba(0,0,0,0.08);
  --admin-bg: #eef0f5;
  --admin-card: rgba(255,255,255,0.90);
  --bg-gradient: radial-gradient(ellipse at 30% 20%, rgba(74,108,247,0.06) 0%, transparent 55%),
                 radial-gradient(ellipse at 70% 80%, rgba(156,80,255,0.05) 0%, transparent 55%);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--bg);
  background-image: var(--bg-gradient);
  color: var(--text);
  transition: background 0.8s cubic-bezier(0.25,0.1,0.25,1), color 0.6s;
}

/* ===== Canvas ===== */
#canvas-container {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  z-index: 1;
  pointer-events: none;
}
#canvas-container::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(0,0,0,0.50) 100%);
  pointer-events: none;
  z-index: 1;
}
[data-theme="light"] #canvas-container::after {
  background: radial-gradient(ellipse at center, transparent 40%, rgba(255,255,255,0.50) 100%);
}

/* ===== Page Content ===== */
.page-content {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px 20px;
}

/* ===== Header ===== */
.site-header {
  text-align: center;
  pointer-events: none;
  margin-bottom: 16px;
}

.site-header .header-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  pointer-events: auto;
}

.site-header h1 {
  font-size: 40px;
  font-weight: 400;
  letter-spacing: 8px;
  background: linear-gradient(135deg, var(--accent), #a78bfa, var(--accent));
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradShift 4s ease infinite;
  text-shadow: 0 0 40px rgba(94,126,255,0.15);
}

@keyframes gradShift {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

.site-header .subtitle {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 4px;
  color: var(--text-secondary);
  margin-top: 8px;
  opacity: 0.85;
}

.site-header .divider {
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  margin: 14px auto 0;
  opacity: 0.4;
}

/* ===== Theme Toggle ===== */
.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 16px;
  transition: all 0.4s cubic-bezier(0.34,1.56,0.64,1);
  color: var(--text);
  backdrop-filter: blur(12px);
}
.theme-toggle:hover {
  background: var(--bg-card-hover);
  box-shadow: 0 0 30px var(--glow);
  transform: rotate(360deg) scale(1.15);
}

/* ===== Greeting ===== */
.greeting {
  text-align: center;
  margin-bottom: 4px;
}
.greeting .greet-text {
  font-size: 17px;
  font-weight: 400;
  letter-spacing: 3px;
  color: var(--text-secondary);
  text-shadow: 0 0 20px rgba(0,0,0,0.2);
}
.greeting .greet-icon {
  font-size: 20px;
  margin-right: 6px;
  display: inline-block;
  animation: floatY 3s ease-in-out infinite;
}

/* ===== Quote ===== */
.quote {
  text-align: center;
  margin-bottom: 18px;
  max-width: 520px;
}
.quote .quote-text {
  font-size: 13px;
  font-style: italic;
  letter-spacing: 2px;
  color: var(--text-secondary);
  line-height: 1.7;
  opacity: 0.85;
}
.quote .quote-text::before { content: '"'; }
.quote .quote-text::after { content: '"'; }

/* ===== NAV CARDS - COMPLETE REDESIGN ===== */
.nav-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
  padding: 10px;
  width: 100%;
  perspective: 1200px;
}

.nav-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 22px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 18px;
  text-decoration: none;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 24px var(--shadow), inset 0 1px 0 rgba(255,255,255,0.06);
  transition: all 0.4s cubic-bezier(0.34,1.56,0.64,1);
  cursor: pointer;
  user-select: none;
  min-width: 130px;
  flex: 0 1 auto;
  position: relative;
  overflow: visible;
  animation: cardFloat 3s ease-in-out infinite;
  animation-delay: calc(var(--i, 0) * -0.3s);
  transform-style: preserve-3d;
}

.nav-card::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 20px;
  background: conic-gradient(
    from var(--angle, 0deg),
    var(--accent),
    #a78bfa,
    #f472b6,
    #fb923c,
    var(--accent)
  );
  opacity: 0;
  transition: opacity 0.5s;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 2px;
  z-index: -1;
  animation: borderSpin 3s linear infinite;
}

@property --angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

@keyframes borderSpin {
  to { --angle: 360deg; }
}

.nav-card:hover::before {
  opacity: 1;
}

.nav-card::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 22px;
  background: radial-gradient(circle at 50% 0%, var(--accent), transparent 70%);
  opacity: 0;
  transition: opacity 0.6s;
  z-index: -2;
  filter: blur(20px);
}

.nav-card:hover::after {
  opacity: 0.35;
}

.nav-card:hover {
  background: var(--bg-card-hover);
  box-shadow: 0 12px 48px var(--shadow-hover), 0 0 60px var(--glow), inset 0 1px 0 rgba(255,255,255,0.08);
  transform: translateY(-8px) scale(1.06) rotateX(2deg) rotateY(-2deg);
  border-color: transparent;
}

.nav-card:active {
  transform: translateY(0) scale(0.97) rotateX(0) rotateY(0);
  transition-duration: 0.1s;
}

@keyframes cardFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.nav-card .card-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.nav-card .card-icon {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
  border: 1px solid rgba(255,255,255,0.06);
  font-size: 15px;
  flex-shrink: 0;
  backdrop-filter: blur(4px);
  transition: all 0.4s;
}

.nav-card:hover .card-icon {
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  border-color: transparent;
  transform: scale(1.1) rotate(-5deg);
}

.nav-card .card-logo {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  object-fit: cover;
  background: rgba(255,255,255,0.04);
  flex-shrink: 0;
  transition: all 0.4s cubic-bezier(0.34,1.56,0.64,1);
  border: 1px solid rgba(255,255,255,0.06);
}

.nav-card:hover .card-logo {
  transform: scale(1.15) rotate(-5deg);
  box-shadow: 0 0 20px rgba(94,126,255,0.3);
  border-color: var(--accent);
}

.nav-card .card-body {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.nav-card .card-title {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.3;
  color: var(--text);
  transition: color 0.3s;
}

.nav-card:hover .card-title {
  color: var(--accent);
}

.nav-card .card-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 150px;
  opacity: 0.75;
  transition: opacity 0.3s;
}

.nav-card:hover .card-desc {
  opacity: 1;
}

/* ===== Sparkle hover effect ===== */
.nav-card .sparkle-container {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: visible;
  z-index: 5;
}

/* ===== Clock ===== */
.clock {
  text-align: center;
  margin-top: 16px;
}
.clock .clock-time {
  font-size: 38px;
  font-weight: 400;
  letter-spacing: 6px;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 30px rgba(94,126,255,0.10);
}
.clock .clock-date {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 4px;
  color: var(--text-secondary);
  margin-top: 4px;
  opacity: 0.8;
}

/* ===== Footer ===== */
.site-footer {
  position: fixed;
  bottom: 18px;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 11px;
  color: var(--text-muted);
  z-index: 10;
  letter-spacing: 3px;
  pointer-events: none;
  opacity: 0.55;
}

/* ===== Admin Entry ===== */
.admin-entry {
  position: fixed;
  bottom: 18px;
  right: 22px;
  z-index: 10;
}
.admin-entry a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  transition: all 0.3s;
  opacity: 0.35;
}
.admin-entry a:hover {
  color: var(--text);
  opacity: 1;
  transform: rotate(90deg);
}

/* ===== Tooltip ===== */
#tooltip {
  position: fixed;
  z-index: 20;
  pointer-events: none;
  background: var(--tooltip-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--tooltip-border);
  border-radius: 10px;
  padding: 6px 14px;
  font-size: 12px;
  color: var(--text);
  display: none;
  white-space: nowrap;
  font-weight: 450;
  box-shadow: 0 8px 32px var(--shadow);
}

/* ===== No Links ===== */
.no-links {
  text-align: center;
  color: var(--text-secondary);
}
.no-links .icon { font-size: 48px; opacity: 0.08; margin-bottom: 8px; }
.no-links p { font-size: 15px; }
.no-links .admin-hint { font-size: 13px; color: var(--text-muted); margin-top: 6px; }
.no-links .admin-hint a { color: var(--accent); text-decoration: none; font-weight: 500; }

/* ===== Animations ===== */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes floatY { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes pulse { 0%, 100% { opacity: 0.4; } 50% { opacity: 0.8; } }

/* ===== Admin Panel ===== */
.admin-page {
  min-height: 100vh;
  background: var(--admin-bg);
  color: var(--text);
  transition: background 0.4s, color 0.4s;
}
.admin-layout {
  max-width: 980px;
  margin: 0 auto;
  padding: 30px 20px 60px;
}
.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}
.admin-header h1 { font-size: 22px; font-weight: 600; }
.admin-nav { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.admin-nav-btn {
  padding: 8px 18px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 450;
}
.admin-nav-btn:hover { background: var(--bg-card-hover); }
.admin-nav-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.admin-section { display: none; }
.admin-section.active { display: block; }
.admin-card {
  background: var(--admin-card);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  padding: 32px 28px;
  box-shadow: 0 4px 24px var(--shadow);
  border: 1px solid var(--border);
  margin-bottom: 24px;
  transition: background 0.4s;
}
.admin-card h2 { font-size: 17px; font-weight: 600; margin-bottom: 20px; }
.admin-card h3 { font-size: 14px; font-weight: 500; margin-bottom: 12px; color: var(--text-secondary); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.form-row.three { grid-template-columns: 1fr 1fr 1fr; }
.form-row.four { grid-template-columns: 1fr 1fr 1fr 1fr; }
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 12px; font-weight: 500; color: var(--text-secondary); margin-bottom: 5px; letter-spacing: 0.3px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 9px 12px;
  border: 1px solid var(--border); border-radius: 10px;
  font-size: 13px; background: var(--bg);
  transition: border-color 0.2s, box-shadow 0.2s, background 0.4s;
  outline: none; color: var(--text);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--glow);
}
.form-group textarea { resize: vertical; min-height: 60px; font-family: inherit; }
.form-group input[type="color"] { height: 40px; padding: 3px; cursor: pointer; }
.form-group .hint { font-size: 11px; color: var(--text-muted); margin-top: 3px; }
.form-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); }
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 9px 20px; border-radius: 10px; font-size: 13px; font-weight: 500; border: none; cursor: pointer; transition: all 0.2s; text-decoration: none; line-height: 1; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.85; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg); }
.btn-sm { padding: 6px 14px; font-size: 12px; border-radius: 8px; }
.btn-group { display: flex; gap: 8px; }
.links-table { width: 100%; border-collapse: collapse; }
.links-table th, .links-table td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); font-size: 13px; }
.links-table th { font-weight: 600; color: var(--text-secondary); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
.links-table td { color: var(--text); }
.links-table tr:hover td { background: rgba(255,255,255,0.02); }
[data-theme="light"] .links-table tr:hover td { background: rgba(0,0,0,0.02); }
.links-table .url-cell { color: var(--accent); max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.links-table .actions-cell { text-align: right; }
.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.toolbar .count { font-size: 12px; color: var(--text-muted); }
.empty-state { text-align: center; padding: 40px 20px; color: var(--text-muted); font-size: 13px; }
.empty-state .icon { font-size: 28px; margin-bottom: 8px; opacity: 0.2; }
.toggle-wrap { display: flex; align-items: center; gap: 10px; }
.toggle { position: relative; width: 40px; height: 24px; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle .slider { position: absolute; inset: 0; background: var(--border); border-radius: 24px; cursor: pointer; transition: 0.3s; }
.toggle .slider::before { content: ''; position: absolute; width: 18px; height: 18px; left: 3px; bottom: 3px; background: #fff; border-radius: 50%; transition: 0.3s; }
.toggle input:checked + .slider { background: var(--accent); }
.toggle input:checked + .slider::before { transform: translateX(16px); }
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.3); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; z-index: 100; opacity: 0; pointer-events: none; transition: opacity 0.25s; }
.modal-overlay.active { opacity: 1; pointer-events: auto; }
.modal { background: var(--admin-card); border-radius: 20px; padding: 28px; width: 100%; max-width: 460px; margin: 20px; box-shadow: 0 20px 60px rgba(0,0,0,0.15); border: 1px solid var(--border); transition: background 0.4s; }
.modal h2 { font-size: 18px; font-weight: 600; margin-bottom: 20px; }
.modal .btn-group { margin-top: 20px; justify-content: flex-end; }
.auth-view { max-width: 380px; margin: 80px auto; text-align: center; }
.auth-view h2 { font-size: 22px; font-weight: 600; margin-bottom: 24px; }
.auth-view .form-group { text-align: left; }
.auth-view .btn { width: 100%; margin-top: 8px; }
.auth-view .error { color: var(--danger); font-size: 13px; text-align: center; margin-bottom: 12px; }
.auth-view .hint { font-size: 12px; color: var(--text-muted); text-align: center; margin-top: 16px; }
.logout-link { font-size: 12px; color: var(--text-muted); text-decoration: none; padding: 6px 12px; border-radius: 8px; transition: all 0.2s; }
.logout-link:hover { color: var(--danger); background: rgba(255,59,48,0.08); }
.upload-preview { display: flex; align-items: center; gap: 12px; margin-top: 8px; }
.upload-preview img { width: 40px; height: 40px; border-radius: 10px; object-fit: cover; background: var(--border); border: 1px solid var(--border); }
.upload-preview .upload-name { font-size: 12px; color: var(--text-secondary); }

@media (max-width: 680px) {
  .site-header h1 { font-size: 24px; letter-spacing: 10px; }
  .nav-card { min-width: 0; width: 100%; }
  .form-row, .form-row.three, .form-row.four { grid-template-columns: 1fr; }
  .admin-header { flex-direction: column; align-items: flex-start; }
  .clock .clock-time { font-size: 24px; letter-spacing: 4px; }
  .greeting .greet-text { font-size: 15px; }
}