/* ================================================================
   Gold & Silver Dashboard — Glassmorphism Theme v1.1
   ================================================================ */

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ---------- Design Tokens ---------- */
:root {
  --font: "Inter", system-ui, -apple-system, sans-serif;
  --radius: 18px;
  --radius-sm: 12px;
  --glass-blur: 22px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --green: #22c55e;
  --red: #ef4444;
}

/* ---------- Dark Theme ---------- */
[data-theme="dark"] {
  --bg-1: #0a0a1a;
  --bg-2: #141432;
  --bg-3: #1e1e3f;
  --text: #f0f0f5;
  --text-muted: #9a9ab0;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  --glass-hover: rgba(255, 255, 255, 0.08);
  --gold: #ffd700;
  --gold-soft: #ffc930;
  --gold-24: #f0a500;
  --silver: #c0c8d4;
  --silver-soft: #a8b4c2;
  --accent: #845ef7;
  --btn-bg: rgba(255, 255, 255, 0.06);
  --btn-hover: rgba(255, 255, 255, 0.12);
  --btn-active-bg: rgba(255, 215, 0, 0.15);
  --btn-active-border: rgba(255, 215, 0, 0.45);
  --input-bg: rgba(255, 255, 255, 0.04);
  --table-stripe: rgba(255, 255, 255, 0.02);
  --table-hover: rgba(255, 255, 255, 0.05);
  --chart-gold: #ffd700;
  --chart-gold-fill: rgba(255, 215, 0, 0.12);
  --chart-gold24: #f0a500;
  --chart-gold24-fill: rgba(240, 165, 0, 0.08);
  --chart-silver: #c0c8d4;
  --chart-silver-fill: rgba(192, 200, 212, 0.12);
  --chart-grid: rgba(255, 255, 255, 0.06);
  --toast-bg: rgba(30, 30, 63, 0.92);
  --scrollbar-thumb: rgba(255, 255, 255, 0.1);
  --skel-base: rgba(255, 255, 255, 0.06);
  --skel-shine: rgba(255, 255, 255, 0.12);
  --highlight-up: rgba(34, 197, 94, 0.08);
  --highlight-down: rgba(239, 68, 68, 0.08);
}

/* ---------- Light Theme ---------- */
[data-theme="light"] {
  --bg-1: #faf9f7;
  --bg-2: #f0ece4;
  --bg-3: #e8e0d4;
  --text: #1a1a2e;
  --text-muted: #6b6b80;
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(255, 255, 255, 0.8);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
  --glass-hover: rgba(255, 255, 255, 0.75);
  --gold: #b8860b;
  --gold-soft: #d4a017;
  --gold-24: #cd7f32;
  --silver: #607080;
  --silver-soft: #708898;
  --accent: #6c47d9;
  --btn-bg: rgba(0, 0, 0, 0.03);
  --btn-hover: rgba(0, 0, 0, 0.07);
  --btn-active-bg: rgba(184, 134, 11, 0.12);
  --btn-active-border: rgba(184, 134, 11, 0.45);
  --input-bg: rgba(0, 0, 0, 0.02);
  --table-stripe: rgba(0, 0, 0, 0.015);
  --table-hover: rgba(0, 0, 0, 0.04);
  --chart-gold: #b8860b;
  --chart-gold-fill: rgba(184, 134, 11, 0.1);
  --chart-gold24: #cd7f32;
  --chart-gold24-fill: rgba(205, 127, 50, 0.08);
  --chart-silver: #607080;
  --chart-silver-fill: rgba(96, 112, 128, 0.1);
  --chart-grid: rgba(0, 0, 0, 0.05);
  --toast-bg: rgba(255, 255, 255, 0.92);
  --scrollbar-thumb: rgba(0, 0, 0, 0.12);
  --skel-base: rgba(0, 0, 0, 0.05);
  --skel-shine: rgba(0, 0, 0, 0.1);
  --highlight-up: rgba(34, 197, 94, 0.06);
  --highlight-down: rgba(239, 68, 68, 0.06);
}

/* ---------- Base ---------- */
html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: linear-gradient(145deg, var(--bg-1), var(--bg-2), var(--bg-3));
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }

/* ---------- Animated Blobs ---------- */
.backdrop-blur { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.blob { position: absolute; border-radius: 50%; filter: blur(130px); opacity: 0.25; will-change: transform; }
.blob-gold   { width: 480px; height: 480px; background: var(--gold);   top: -8%;  left: -6%;  animation: drift 22s ease-in-out infinite alternate; }
.blob-silver { width: 400px; height: 400px; background: var(--silver); bottom: -10%; right: -6%; animation: drift 26s ease-in-out infinite alternate-reverse; }
.blob-accent { width: 300px; height: 300px; background: var(--accent); top: 40%; left: 50%; animation: drift 30s ease-in-out infinite alternate; }
@keyframes drift {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(60px, 40px) scale(1.15); }
  100% { transform: translate(-40px, 70px) scale(1.05); }
}

/* ---------- Glass ---------- */
.glass-card, .glass-header, .glass-footer {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--glass-shadow);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

/* ---------- Header ---------- */
.glass-header { position: sticky; top: 0; z-index: 100; border-radius: 0 0 var(--radius) var(--radius); padding: 0.85rem 1.5rem; }
.header-content { max-width: 1260px; margin: auto; display: flex; justify-content: space-between; align-items: center; }
.brand { display: flex; align-items: center; gap: 0.6rem; }
.brand-icon { color: var(--gold); }
.brand h1 { font-size: 1.35rem; font-weight: 700; letter-spacing: -0.02em; background: linear-gradient(135deg, var(--gold), var(--silver)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.header-actions { display: flex; gap: 0.5rem; }

/* ---------- Icon Button ---------- */
.btn-icon { background: var(--btn-bg); border: 1px solid var(--glass-border); border-radius: 50%; width: 40px; height: 40px; cursor: pointer; color: var(--text); display: flex; align-items: center; justify-content: center; transition: all var(--transition); }
.btn-icon:hover { background: var(--btn-hover); transform: scale(1.08); }
.btn-icon:active { transform: scale(0.95); }
[data-theme="dark"] .icon-sun  { display: block; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun  { display: none; }
[data-theme="light"] .icon-moon { display: block; }

/* ---------- Container ---------- */
.container { max-width: 1260px; margin: 1.5rem auto; padding: 0 1rem; }

/* ---------- Price Cards ---------- */
.price-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 0.75rem; }

.price-card {
  padding: 1.4rem 1.25rem 1rem;
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 0.3rem;
  position: relative; overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.price-card:hover { transform: translateY(-5px); box-shadow: var(--glass-shadow), 0 12px 40px rgba(0, 0, 0, 0.15); }

.card-icon { margin-bottom: 0.2rem; opacity: 0.7; }
.gold-card .card-icon   { color: var(--gold); }
.gold24-card .card-icon { color: var(--gold-24); }
.silver-card .card-icon  { color: var(--silver); }

.card-label { font-size: 0.75rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1.5px; }
.card-price { font-size: 2rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; }
.gold-card .card-price   { color: var(--gold); }
.gold24-card .card-price { color: var(--gold-24); }
.silver-card .card-price  { color: var(--silver); }
.card-unit { font-size: 0.7rem; color: var(--text-muted); letter-spacing: 0.5px; }

/* Delta badge */
.card-delta { font-size: 0.72rem; font-weight: 600; padding: 0.15rem 0.5rem; border-radius: 6px; min-height: 1.2em; }
.card-delta.up   { color: var(--green); background: rgba(34, 197, 94, 0.12); }
.card-delta.down { color: var(--red);   background: rgba(239, 68, 68, 0.12); }
.card-delta.flat { color: var(--text-muted); background: var(--glass-bg); }

/* Sparkline canvas */
.sparkline { width: 110px; height: 28px; margin: 0.15rem 0; opacity: 0.85; }

/* Shimmer */
.card-shimmer { position: absolute; inset: 0; background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.04) 50%, transparent 60%); animation: shimmer 4s ease-in-out infinite; pointer-events: none; }
@keyframes shimmer { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }

/* ---------- Skeleton loading ---------- */
.skel-bar { display: inline-block; border-radius: 6px; background: var(--skel-base); animation: skelPulse 1.5s ease-in-out infinite; }
.skel-price { width: 100px; height: 2rem; }

@keyframes skelPulse {
  0%, 100% { opacity: 0.5; }
  50%      { opacity: 1; }
}

.skeleton-card .card-delta,
.skeleton-card .sparkline { visibility: hidden; }

/* ---------- Last Updated ---------- */
.last-updated { text-align: center; font-size: 0.78rem; color: var(--text-muted); margin-bottom: 1.25rem; }

/* ---------- Filter Section ---------- */
.filter-section { padding: 0.85rem 1.25rem; margin-bottom: 1.25rem; }
.filter-row { display: flex; flex-wrap: wrap; gap: 0.85rem; align-items: center; }
.btn-group { display: flex; gap: 0.4rem; }
.btn { padding: 0.48rem 1.15rem; border: 1px solid var(--glass-border); border-radius: var(--radius-sm); background: var(--btn-bg); color: var(--text); cursor: pointer; font-family: var(--font); font-size: 0.85rem; font-weight: 500; transition: all 0.2s ease; }
.btn:hover { background: var(--btn-hover); }
.btn.active { background: var(--btn-active-bg); border-color: var(--btn-active-border); font-weight: 600; }
.btn-primary { background: linear-gradient(135deg, var(--gold), var(--gold-24)); color: #000; font-weight: 600; border: none; }
.btn-primary:hover { filter: brightness(1.1); }

.custom-range { display: none; flex-wrap: wrap; gap: 0.5rem; align-items: center; animation: fadeSlide 0.25s ease; }
.custom-range.visible { display: flex; }
@keyframes fadeSlide { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }

.range-sep { font-size: 0.85rem; color: var(--text-muted); }
.input-glass { padding: 0.45rem 0.75rem; border-radius: var(--radius-sm); border: 1px solid var(--glass-border); background: var(--input-bg); color: var(--text); font-family: var(--font); font-size: 0.85rem; outline: none; transition: border-color 0.2s; }
.input-glass:focus { border-color: var(--gold); }

/* ---------- Charts ---------- */
.charts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-bottom: 1.25rem; }
.chart-card { padding: 1.25rem; }
.chart-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.85rem; }
.chart-header h2 { font-size: 0.9rem; font-weight: 600; color: var(--text-muted); letter-spacing: 0.3px; margin: 0; }
.chart-wrapper { position: relative; width: 100%; }

/* Chart type toggle */
.chart-type-toggle { display: flex; gap: 2px; background: var(--btn-bg); border-radius: 8px; padding: 2px; border: 1px solid var(--glass-border); }
.chart-toggle-btn { background: none; border: none; cursor: pointer; padding: 4px 8px; border-radius: 6px; color: var(--text-muted); display: flex; align-items: center; justify-content: center; transition: all 0.2s; }
.chart-toggle-btn:hover { color: var(--text); }
.chart-toggle-btn.active { background: var(--btn-active-bg); color: var(--text); }

/* ---------- Table ---------- */
.table-section { padding: 1.25rem; margin-bottom: 1.5rem; }
.table-section h2 { font-size: 0.9rem; font-weight: 600; color: var(--text-muted); margin-bottom: 0.85rem; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
thead th { text-align: left; padding: 0.7rem 0.85rem; border-bottom: 1px solid var(--glass-border); color: var(--text-muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.5px; white-space: nowrap; }
tbody td { padding: 0.65rem 0.85rem; border-bottom: 1px solid var(--glass-border); white-space: nowrap; }
tbody tr:nth-child(even) td { background: var(--table-stripe); }
tbody tr:hover td { background: var(--table-hover); }

/* Table row highlights for big price changes */
tbody tr.row-up td:first-child { border-left: 3px solid var(--green); }
tbody tr.row-down td:first-child { border-left: 3px solid var(--red); }
tbody tr.row-up td { background: var(--highlight-up); }
tbody tr.row-down td { background: var(--highlight-down); }

.empty-state { display: none; text-align: center; padding: 2rem 1rem; color: var(--text-muted); font-size: 0.9rem; }
.empty-state.visible { display: block; }

/* ---------- Footer ---------- */
.glass-footer { border-radius: var(--radius) var(--radius) 0 0; padding: 0.75rem 1.5rem; text-align: center; margin-top: 0.5rem; }
.footer-content { max-width: 1260px; margin: auto; display: flex; justify-content: center; align-items: center; gap: 0.6rem; font-size: 0.75rem; color: var(--text-muted); flex-wrap: wrap; }
.footer-sep { opacity: 0.4; }

/* ---------- Toast ---------- */
.toast { position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%) translateY(80px); background: var(--toast-bg); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); color: var(--text); padding: 0.7rem 1.4rem; border-radius: var(--radius-sm); border: 1px solid var(--glass-border); font-size: 0.85rem; z-index: 200; opacity: 0; pointer-events: none; transition: all 0.35s ease; }
.toast.visible { transform: translateX(-50%) translateY(0); opacity: 1; pointer-events: auto; }

/* ---------- Spinner ---------- */
.btn-icon.spinning svg { animation: spin 0.8s linear infinite; }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .charts-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .price-cards { grid-template-columns: 1fr 1fr; }
  .header-content h1 { font-size: 1.1rem; }
  .card-price { font-size: 1.5rem; }
  .filter-row { flex-direction: column; align-items: stretch; }
  .btn-group { justify-content: center; }
  .custom-range.visible { justify-content: center; }
}
@media (max-width: 480px) {
  .price-cards { grid-template-columns: 1fr; }
  .container { padding: 0 0.65rem; }
  .glass-header { padding: 0.7rem 0.85rem; }
  .brand h1 { font-size: 1rem; }
  .card-price { font-size: 1.75rem; }
  .chart-card { padding: 1rem; }
}