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

:root {
  --bg: #eef2f7;
  --bg-gradient: linear-gradient(135deg, #eef2f7 0%, #e4ecf5 50%, #eaf0f8 100%);
  --surface: rgba(255, 255, 255, 0.85);
  --surface-solid: #ffffff;
  --surface-soft: #f4f7fb;
  --border: rgba(226, 232, 240, 0.9);
  --border-glow: rgba(123, 154, 204, 0.35);

  --text: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  --accent: #6b8fc4;
  --accent-soft: #e8eef7;
  --accent-glow: rgba(107, 143, 196, 0.2);

  --green: #5ba88e;
  --green-soft: #e6f2ed;
  --green-glow: rgba(91, 168, 142, 0.25);

  --red: #c77b7b;
  --red-soft: #f5e8e8;
  --red-glow: rgba(199, 123, 123, 0.25);

  --amber: #c9a86a;
  --amber-soft: #f5efe3;

  --radius: 16px;
  --radius-sm: 12px;
  --radius-xs: 8px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 24px var(--accent-glow);
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* ==========================================================
   LAYOUT
   ========================================================== */
.app-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 28px 22px 48px;
}

/* ==========================================================
   HEADER
   ========================================================== */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
  padding: 20px 24px;
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.app-header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--green), var(--amber), var(--accent));
  background-size: 300% 100%;
  animation: headerShine 6s linear infinite;
}

@keyframes headerShine {
  0% { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-mark {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--accent), #8aa8d4);
  color: #fff;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 1px;
  box-shadow: 0 4px 14px var(--accent-glow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.logo-mark:hover {
  transform: scale(1.05) rotate(-3deg);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.app-header h1 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--text), #475569);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.refresh-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: linear-gradient(135deg, var(--accent), #8aa8d4);
  color: #fff;
  border: none;
  border-radius: 100px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 4px 14px var(--accent-glow);
  position: relative;
  overflow: hidden;
}

.refresh-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.35) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.refresh-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.refresh-btn:hover::after {
  transform: translateX(100%);
}

.refresh-btn:active {
  transform: translateY(0) scale(0.98);
}

.refresh-btn svg {
  transition: transform 0.5s ease;
}

.refresh-btn.spinning svg {
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.header-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  background: var(--surface-soft);
  padding: 9px 18px;
  border-radius: 100px;
  border: 1px solid var(--border);
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--amber);
  transition: background 0.3s, box-shadow 0.3s;
}

.status-dot.live {
  background: var(--green);
  box-shadow: 0 0 0 4px var(--green-glow);
  animation: pulseGreen 2s infinite;
}

@keyframes pulseGreen {
  0%, 100% { box-shadow: 0 0 0 4px var(--green-glow); }
  50% { box-shadow: 0 0 0 7px rgba(91, 168, 142, 0.12); }
}

.timestamp {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--text);
}

/* ==========================================================
   ASSET SELECTOR
   ========================================================== */
.pair-selector {
  display: flex;
  flex-direction: column;
  gap: 22px;
  margin-bottom: 28px;
}

.selector-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.selector-group-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-muted);
  padding-left: 6px;
  position: relative;
}

.group-icon {
  color: var(--accent);
  flex-shrink: 0;
}

.selector-group-title::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 6px;
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  border-radius: 2px;
}

.selector-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pair-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 13px 18px;
  background: var(--surface);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: inherit;
  min-width: 136px;
  text-align: left;
  position: relative;
  overflow: hidden;
}

.pair-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-soft), transparent);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.pair-btn:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.pair-btn:hover::before {
  opacity: 1;
}

.pair-btn.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 4px 18px var(--accent-glow);
  transform: translateY(-2px);
}

.pair-btn.active::before {
  opacity: 1;
}

.pair-btn .flag {
  font-size: 19px;
  line-height: 1;
  position: relative;
  z-index: 1;
}

.pair-btn .pair-name {
  font-weight: 700;
  font-size: 14px;
  color: var(--text);
  position: relative;
  z-index: 1;
}

.pair-btn .pair-alias {
  font-size: 11px;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
}

/* ==========================================================
   CARDS
   ========================================================== */
.card {
  background: var(--surface);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-header h2 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.icon-inline {
  color: var(--accent);
  flex-shrink: 0;
}

.badge {
  font-size: 11px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 100px;
  background: var(--green-soft);
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-soft {
  background: var(--accent-soft);
  color: var(--accent);
}

/* ==========================================================
   MAIN ROW
   ========================================================== */
.main-row {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 22px;
  margin-bottom: 28px;
}

.price-card {
  display: flex;
  flex-direction: column;
}

.price-display {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}

.price-value {
  font-size: 38px;
  font-weight: 800;
  letter-spacing: -1.5px;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  transition: color 0.3s;
}

.price-change {
  font-size: 15px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 100px;
  font-variant-numeric: tabular-nums;
  transition: all 0.3s ease;
}

.price-change.up {
  background: var(--green-soft);
  color: var(--green);
}

.price-change.down {
  background: var(--red-soft);
  color: var(--red);
}

.price-meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: auto;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 12px 14px;
  background: var(--surface-soft);
  border-radius: var(--radius-xs);
  border: 1px solid rgba(226, 232, 240, 0.6);
  transition: border-color 0.2s;
}

.meta-item:hover {
  border-color: var(--border-glow);
}

.meta-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 700;
}

.meta-value {
  font-size: 15px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.chart-card {
  display: flex;
  flex-direction: column;
}

.chart-wrapper {
  flex: 1;
  position: relative;
  min-height: 280px;
}

.chart-wrapper canvas {
  width: 100% !important;
  height: 100% !important;
}

/* ==========================================================
   INDICATORS GRID
   ========================================================== */
.indicators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 22px;
  margin-bottom: 28px;
}

.indicator-card {
  display: flex;
  flex-direction: column;
}

.indicator-desc {
  font-size: 12.5px;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.55;
}

.indicator-values {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.ind-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 9px 16px;
  background: var(--surface-soft);
  border-radius: var(--radius-xs);
  min-width: 84px;
  border: 1px solid rgba(226, 232, 240, 0.6);
}

.ind-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 700;
}

.ind-value {
  font-size: 15px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.chart-mini {
  position: relative;
  height: 120px;
  margin-top: auto;
}

.chart-mini canvas {
  width: 100% !important;
  height: 100% !important;
}

/* ==========================================================
   RADAR TABLE
   ========================================================== */
.radar-card {
  margin-bottom: 28px;
}

.radar-desc {
  font-size: 12.5px;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.55;
}

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
}

.radar-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

.radar-table thead {
  background: var(--surface-soft);
}

.radar-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.radar-table td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(226, 232, 240, 0.5);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}

.radar-table tbody tr {
  transition: background 0.2s;
}

.radar-table tbody tr:hover {
  background: var(--surface-soft);
}

.radar-table tbody tr:last-child td {
  border-bottom: none;
}

.radar-empty {
  text-align: center;
  color: var(--text-light);
  padding: 24px !important;
  font-style: italic;
}

.radar-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 6px;
  vertical-align: middle;
}

.radar-dot.overbought {
  background: var(--green);
  box-shadow: 0 0 0 3px var(--green-glow);
}

.radar-dot.oversold {
  background: var(--red);
  box-shadow: 0 0 0 3px var(--red-glow);
}

.radar-signal {
  font-weight: 700;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 100px;
  display: inline-block;
}

.radar-signal.overbought {
  background: var(--green-soft);
  color: var(--green);
}

.radar-signal.oversold {
  background: var(--red-soft);
  color: var(--red);
}

/* ==========================================================
   FOOTER & DISCLAIMER
   ========================================================== */
.app-footer {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.footer-credit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-muted);
  text-align: center;
  padding: 14px 20px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.footer-credit strong {
  color: var(--accent);
  font-weight: 700;
}

.footer-icon {
  color: var(--green);
  flex-shrink: 0;
}

.disclaimer {
  background: linear-gradient(135deg, rgba(245, 239, 227, 0.55), rgba(245, 232, 232, 0.35));
  border: 1px solid rgba(201, 168, 106, 0.35);
  border-left: 4px solid var(--amber);
  border-radius: var(--radius);
  padding: 26px 28px;
  box-shadow: var(--shadow-sm);
}

.disclaimer-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(201, 168, 106, 0.3);
}

.disclaimer-icon {
  color: var(--amber);
  flex-shrink: 0;
}

.disclaimer-header h3 {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.6px;
  color: #7a5b2e;
  text-transform: uppercase;
}

.disclaimer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 18px;
  margin-bottom: 20px;
}

.disclaimer-section {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(201, 168, 106, 0.18);
  border-radius: var(--radius-xs);
  padding: 16px 18px;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.disclaimer-section:hover {
  border-color: rgba(201, 168, 106, 0.4);
  background: rgba(255, 255, 255, 0.75);
}

.disclaimer-section h4 {
  font-size: 12.5px;
  font-weight: 800;
  color: #8a6428;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.disclaimer-section p {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.65;
}

.disclaimer-section strong {
  color: #8a6428;
  font-weight: 700;
}

.disclaimer-footer {
  padding-top: 16px;
  border-top: 1px solid rgba(201, 168, 106, 0.3);
  text-align: center;
}

.disclaimer-footer p {
  font-size: 12.5px;
  color: #7a5b2e;
  font-weight: 600;
  font-style: italic;
}

.footer-bottom {
  margin-top: 24px;
  padding-top: 16px;
  text-align: center;
  font-size: 11.5px;
  color: var(--text-light);
}

/* ==========================================================
   RESPONSIVE
   ========================================================== */
@media (max-width: 1024px) {
  .main-row {
    grid-template-columns: 1fr;
  }
  .price-card { order: 1; }
  .chart-card { order: 2; }

  .disclaimer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .app-container { padding: 18px 14px 36px; }

  .app-header {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 18px;
  }

  .app-header h1 { font-size: 18px; }

  .header-actions {
    width: 100%;
    justify-content: space-between;
  }

  .refresh-btn { padding: 9px 14px; font-size: 12px; }

  .pair-btn { min-width: 110px; padding: 11px 14px; }
  .pair-btn .pair-name { font-size: 13px; }
  .pair-btn .pair-alias { font-size: 10px; }

  .price-value { font-size: 30px; }
  .price-meta { grid-template-columns: 1fr; }

  .indicators-grid { grid-template-columns: 1fr; }
  .chart-mini { height: 100px; }

  .disclaimer {
    padding: 20px 18px;
  }

  .disclaimer-header h3 {
    font-size: 14px;
  }

  .disclaimer-section {
    padding: 14px 16px;
  }
}

@media (max-width: 420px) {
  .pair-btn { min-width: 90px; padding: 9px 11px; }
  .pair-btn .flag { font-size: 16px; }
  .pair-btn .pair-name { font-size: 12px; }
  .pair-btn .pair-alias { display: none; }

  .radar-table { font-size: 12px; }
  .radar-table th, .radar-table td { padding: 10px 10px; }

  .disclaimer-grid {
    gap: 12px;
  }

  .disclaimer-section h4 {
    font-size: 11.5px;
  }

  .disclaimer-section p {
    font-size: 11.5px;
  }
}