/* ═══════════════════════════════════════════════
   RESET & BASE
═══════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:           #080b12;
  --bg2:          #0d1120;
  --bg3:          #111827;
  --border:       rgba(255,255,255,.07);
  --border-light: rgba(255,255,255,.12);
  --text:         #e2e8f0;
  --text-muted:   #64748b;
  --text-dim:     #94a3b8;
  --accent:       #6366f1;
  --accent2:      #8b5cf6;
  --green:        #10b981;
  --red:          #ef4444;
  --gold:         #f59e0b;
  --cyan:         #06b6d4;
  --radius:       12px;
  --radius-lg:    16px;
  --shadow:       0 4px 24px rgba(0,0,0,.4);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ═══════════════════════════════════════════════
   ANIMATED BACKGROUND
═══════════════════════════════════════════════ */
.bg-grid {
  position: fixed; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(99,102,241,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.bg-glow {
  position: fixed; z-index: 0;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  animation: float 8s ease-in-out infinite;
}
.bg-glow-1 {
  width: 600px; height: 600px;
  top: -200px; left: -200px;
  background: radial-gradient(circle, rgba(99,102,241,.12) 0%, transparent 70%);
}
.bg-glow-2 {
  width: 500px; height: 500px;
  bottom: -100px; right: -100px;
  background: radial-gradient(circle, rgba(139,92,246,.1) 0%, transparent 70%);
  animation-delay: -4s;
}
@keyframes float {
  0%,100% { transform: translateY(0);}
  50%      { transform: translateY(-30px);}
}

/* ═══════════════════════════════════════════════
   HEADER
═══════════════════════════════════════════════ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(8,11,18,.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}
.header-inner {
  max-width: 1400px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon { font-size: 24px; color: var(--accent); }
.logo-text {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 20px; font-weight: 700; letter-spacing: -.5px;
}
.logo-badge {
  background: var(--green); color: #000;
  font-size: 9px; font-weight: 800; letter-spacing: 1px;
  padding: 2px 7px; border-radius: 4px;
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100%{opacity:1;} 50%{opacity:.6;} }

.header-meta { display: flex; align-items: center; gap: 12px; }

.status-pill {
  display: flex; align-items: center; gap: 7px;
  background: var(--bg3); border: 1px solid var(--border);
  padding: 6px 14px; border-radius: 99px;
  font-size: 13px; color: var(--text-dim);
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: pulse 2s infinite;
}

.btn-refresh {
  display: flex; align-items: center; gap: 7px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff; border: none; border-radius: 8px;
  padding: 8px 18px; font-size: 13px; font-weight: 600;
  cursor: pointer; transition: all .2s;
}
.btn-refresh svg { width: 14px; height: 14px; }
.btn-refresh:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(99,102,241,.4); }
.btn-refresh:active { transform: translateY(0); }
.btn-refresh.loading svg { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ═══════════════════════════════════════════════
   HERO
═══════════════════════════════════════════════ */
.hero {
  position: relative; z-index: 1;
  max-width: 1400px; margin: 0 auto;
  padding: 60px 24px 32px;
  text-align: center;
}
.hero-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 800; line-height: 1.15;
  letter-spacing: -.5px;
  margin-bottom: 16px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--cyan), var(--accent2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 16px; color: var(--text-dim); max-width: 560px; margin: 0 auto 40px;
}
.hero-sub strong { color: var(--text); }

/* Stats bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px; max-width: 800px; margin: 0 auto 24px;
}
.stat-card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 20px;
  transition: border-color .2s;
}
.stat-card:hover { border-color: var(--border-light); }
.stat-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .8px; margin-bottom: 6px; }
.stat-value { font-family: 'Space Grotesk', sans-serif; font-size: 22px; font-weight: 700; color: var(--text); }

/* Notice */
.notice {
  display: flex; align-items: center; gap: 8px; justify-content: center;
  background: rgba(245,158,11,.08); border: 1px solid rgba(245,158,11,.2);
  border-radius: 8px; padding: 10px 20px; max-width: 700px; margin: 0 auto;
  font-size: 13px; color: var(--gold);
}
.notice svg { flex-shrink: 0; }

/* ═══════════════════════════════════════════════
   CONTROLS
═══════════════════════════════════════════════ */
.controls-bar {
  position: relative; z-index: 1;
  max-width: 1400px; margin: 0 auto;
  padding: 0 24px 20px;
  display: flex; align-items: center;
}
.window-selector { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.controls-label { font-size: 13px; color: var(--text-muted); margin-right: 4px; }
.window-btn {
  background: var(--bg2); border: 1px solid var(--border);
  color: var(--text-dim); font-size: 13px; font-weight: 500;
  padding: 6px 16px; border-radius: 6px; cursor: pointer; transition: all .2s;
}
.window-btn:hover { border-color: var(--accent); color: var(--text); }
.window-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-color: transparent; color: #fff;
  box-shadow: 0 2px 12px rgba(99,102,241,.3);
}

/* ═══════════════════════════════════════════════
   MAIN CONTENT
═══════════════════════════════════════════════ */
.main-content {
  position: relative; z-index: 1;
  max-width: 1400px; margin: 0 auto;
  padding: 0 24px 80px;
}

/* Loading */
.loading-state {
  display: flex; flex-direction: column; align-items: center;
  gap: 20px; padding: 80px 0; color: var(--text-muted);
}
.spinner {
  width: 44px; height: 44px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Error */
.error-state {
  text-align: center; padding: 80px 0;
}
.error-icon { font-size: 48px; margin-bottom: 16px; }
.error-state h3 { font-size: 20px; margin-bottom: 8px; }
.error-state p { color: var(--text-muted); margin-bottom: 24px; }

/* ═══════════════════════════════════════════════
   RANKINGS TABLE
═══════════════════════════════════════════════ */
.rankings-table {
  width: 100%; border-collapse: collapse;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow);
}

.rankings-table thead tr {
  background: rgba(255,255,255,.03);
  border-bottom: 1px solid var(--border);
}
.rankings-table th {
  padding: 14px 16px; font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .8px;
  color: var(--text-muted); white-space: nowrap;
}
.rankings-table th.sortable { cursor: pointer; }
.rankings-table th.sortable:hover { color: var(--text); }
.rankings-table th.active-sort { color: var(--accent); }
.rankings-table th svg { vertical-align: middle; margin-left: 4px; opacity: .6; }

.th-rank  { width: 52px; text-align: center; }
.th-coin  { text-align: left; min-width: 180px; }
.th-delta { text-align: right; }
.th-total { text-align: right; }
.th-price { text-align: right; }
.th-change{ text-align: right; }
.th-mcap  { text-align: right; }

/* Rows */
.rankings-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background .15s;
  cursor: default;
}
.rankings-table tbody tr:last-child { border-bottom: none; }
.rankings-table tbody tr:hover { background: rgba(255,255,255,.03); }

/* Top 3 highlight */
.rankings-table tbody tr.rank-1 { background: linear-gradient(90deg, rgba(245,158,11,.06) 0%, transparent 60%); }
.rankings-table tbody tr.rank-2 { background: linear-gradient(90deg, rgba(148,163,184,.04) 0%, transparent 60%); }
.rankings-table tbody tr.rank-3 { background: linear-gradient(90deg, rgba(205,127,50,.04) 0%, transparent 60%); }

.rankings-table td {
  padding: 14px 16px; font-size: 14px; vertical-align: middle;
}

/* Rank cell */
.td-rank { text-align: center; }
.rank-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 6px;
  font-size: 13px; font-weight: 700;
  background: var(--bg3); color: var(--text-muted);
}
.rank-1 .rank-badge { background: rgba(245,158,11,.15); color: var(--gold); }
.rank-2 .rank-badge { background: rgba(148,163,184,.1);  color: #94a3b8; }
.rank-3 .rank-badge { background: rgba(205,127,50,.12);  color: #cd7f32; }

/* Coin cell */
.coin-cell { display: flex; align-items: center; gap: 12px; }
.coin-img {
  width: 36px; height: 36px; border-radius: 50%;
  object-fit: cover; flex-shrink: 0;
  background: var(--bg3);
}
.coin-img-fallback {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; color: #fff; flex-shrink: 0;
}
.coin-name { font-weight: 600; font-size: 14px; display: block; }
.coin-symbol {
  font-size: 11px; color: var(--text-muted);
  background: var(--bg3); padding: 1px 6px;
  border-radius: 4px; display: inline-block;
  margin-top: 2px;
}

/* Delta cell */
.td-delta { text-align: right; }
.delta-pill {
  display: inline-flex; align-items: center; gap: 5px;
  background: rgba(16,185,129,.12); border: 1px solid rgba(16,185,129,.2);
  color: var(--green); font-weight: 700; font-size: 14px;
  padding: 4px 10px; border-radius: 6px;
}
.delta-pill.no-data {
  background: rgba(100,116,139,.08); border-color: rgba(100,116,139,.15);
  color: var(--text-muted); font-weight: 400; font-size: 12px;
}
.delta-pill.delta-neg {
  background: rgba(239,68,68,.1); border-color: rgba(239,68,68,.2);
  color: var(--red);
}
.delta-pill.delta-zero {
  background: rgba(245,158,11,.1); border-color: rgba(245,158,11,.2);
  color: var(--gold);
}
.delta-pill .delta-icon { font-size: 12px; }

/* Total portfolio */
.td-total { text-align: right; }
.portfolio-count {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px; font-weight: 600;
  color: var(--cyan);
  background: rgba(6,182,212,.08);
  border: 1px solid rgba(6,182,212,.15);
  padding: 3px 9px; border-radius: 6px;
  letter-spacing: .3px;
}

/* Price */
.td-price { text-align: right; font-weight: 500; }

/* Price change */
.td-change { text-align: right; }
.change-badge {
  display: inline-block;
  padding: 3px 8px; border-radius: 5px;
  font-size: 12px; font-weight: 600;
}
.change-badge.pos { background: rgba(16,185,129,.12); color: var(--green); }
.change-badge.neg { background: rgba(239,68,68,.1);   color: var(--red); }
.change-badge.neu { background: var(--bg3); color: var(--text-muted); }

/* Market cap */
.td-mcap { text-align: right; color: var(--text-muted); font-size: 13px; }

/* ═══════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════ */
.site-footer {
  position: relative; z-index: 1;
  text-align: center; padding: 24px;
  border-top: 1px solid var(--border);
  font-size: 12px; color: var(--text-muted);
}
.site-footer a { color: var(--accent); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }

/* ═══════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════ */
@media (max-width: 900px) {
  .th-mcap, .td-mcap { display: none; }
}
@media (max-width: 700px) {
  .th-mcap, .td-mcap { display: none; }   /* hide market cap before portfolio count */
  .hero { padding: 40px 16px 24px; }
  .main-content { padding: 0 12px 60px; }
  .controls-bar { padding: 0 12px 16px; }
}
@media (max-width: 560px) {
  .th-total, .td-total { display: none; } /* hide portfolio count only on very small screens */
}
@media (max-width: 500px) {
  .th-change, .td-change { display: none; }
  .rankings-table td { padding: 12px 10px; }
  .btn-refresh span { display: none; }
}

/* ═══════════════════════════════════════════════
   ANIMATIONS
═══════════════════════════════════════════════ */
.fade-in { animation: fadeIn .4s ease both; }
@keyframes fadeIn { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:none; } }

tr.new-row { animation: rowIn .35s ease both; }
@keyframes rowIn { from { opacity:0; transform:translateX(-8px); } to { opacity:1; transform:none; } }