/* ═══════════════════════════════════════════════
   Bitcoin Cycle Workbench — Premium Dark Theme
   ═══════════════════════════════════════════════ */

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: rgba(26, 31, 46, 0.78);
  --bg-card-hover: rgba(34, 40, 55, 0.88);
  --bg-elevated: rgba(35, 42, 59, 0.92);
  --border: rgba(148, 163, 184, 0.16);
  --border-highlight: rgba(247, 147, 26, 0.42);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-link: #60a5fa;

  --btc-orange: #f7931a;
  --btc-orange-dim: #d97e0f;
  --green: #10b981;
  --green-dim: #059669;
  --red: #ef4444;
  --red-dim: #dc2626;
  --yellow: #eab308;
  --blue: #3b82f6;
  --purple: #8b5cf6;
  --cyan: #06b6d4;

  --signal-accumulation: #10b981;
  --signal-neutral: #3b82f6;
  --signal-overheated: #eab308;
  --signal-riskoff: #ef4444;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-card: 0 12px 34px rgba(0,0,0,0.28), inset 0 1px 0 rgba(255,255,255,0.035);
  --shadow-elevated: 0 22px 70px rgba(0,0,0,0.42), 0 0 0 1px rgba(247,147,26,0.08);
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --transition: all 0.2s ease;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at 15% -10%, rgba(247, 147, 26, 0.18), transparent 34rem),
    radial-gradient(circle at 88% 8%, rgba(59, 130, 246, 0.12), transparent 28rem),
    linear-gradient(180deg, #080b12 0%, var(--bg-primary) 42%, #070a10 100%);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,0.028) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.72), transparent 72%);
}

a { color: var(--text-link); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ═══ Layout ═══ */
.app-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ═══ Header ═══ */
.app-header {
  padding: 16px 0 10px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.app-header-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.app-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.app-logo .btc-icon {
  width: 32px;
  height: 32px;
  background: var(--btc-orange);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  color: #0a0e17;
}

.app-logo .subtitle {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
  display: block;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.header-right .badge {
  background: var(--bg-card);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
}

/* ═══ Stats Bar ═══ */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}

.stat-card {
  background: linear-gradient(180deg, rgba(26,31,46,0.74), rgba(13,18,29,0.64));
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  backdrop-filter: blur(12px);
}

.stat-card:hover {
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
}

.stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.stat-value {
  font-size: 1.1rem;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}

.stat-change {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  margin-top: 2px;
}

.stat-change.positive { color: var(--green); }
.stat-change.negative { color: var(--red); }
.stat-change.neutral { color: var(--text-muted); }

/* ═══ Tabs ═══ */
.tabs-nav {
  display: flex;
  gap: 4px;
  margin-bottom: 14px;
  background: rgba(17,24,39,0.58);
  border-radius: var(--radius-md);
  padding: 4px;
  border: 1px solid var(--border);
  overflow-x: auto;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  font-family: var(--font-sans);
}

.tab-btn:hover {
  color: var(--text-secondary);
  background: rgba(255,255,255,0.04);
}

.tab-btn.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* ═══ Tab Panels ═══ */
.tab-panel {
  display: none;
  animation: fadeIn 0.25s ease;
}

.tab-panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ═══ Chart Section ═══ */
.chart-section {
  background: linear-gradient(180deg, rgba(26,31,46,0.82), rgba(13,18,29,0.78));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(14px) saturate(120%);
}

.glass-panel {
  position: relative;
  overflow: hidden;
}

.glass-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(255,255,255,0.075), transparent 34%, rgba(247,147,26,0.055) 100%);
}

.hero-chart {
  padding: 22px;
  box-shadow: var(--shadow-elevated);
  border-color: rgba(247,147,26,0.20);
}

.hero-chart .chart-header,
.hero-chart .chart-container {
  position: relative;
  z-index: 1;
}

.eyebrow {
  color: var(--btc-orange);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 3px;
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 8px;
}

.chart-title {
  font-size: 1rem;
  font-weight: 600;
}

.chart-controls {
  display: flex;
  gap: 6px;
}

.chart-control-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 4px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
}

.chart-control-btn:hover {
  border-color: var(--border-highlight);
  color: var(--text-secondary);
}

.chart-control-btn.active {
  background: var(--btc-orange);
  border-color: var(--btc-orange);
  color: #0a0e17;
  font-weight: 600;
}

.chart-container {
  width: 100%;
  height: 480px;
  position: relative;
}

.chart-container canvas {
  border-radius: var(--radius-sm);
}

/* ═══ Metric Cards Grid ═══ */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.metric-card:hover {
  border-color: var(--border-highlight);
}

.metric-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 10px;
}

.metric-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.metric-source {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.metric-value-box {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 6px;
}

.metric-value {
  font-size: 1.25rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.metric-label {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 20px;
  background: rgba(16, 185, 129, 0.12);
  color: var(--green);
}

.metric-label.warning {
  background: rgba(234, 179, 8, 0.12);
  color: var(--yellow);
}

.metric-label.danger {
  background: rgba(239, 68, 68, 0.12);
  color: var(--red);
}

.metric-label.info {
  background: rgba(59, 130, 246, 0.12);
  color: var(--blue);
}

.metric-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.metric-chart-mini {
  height: 48px;
  margin-top: 10px;
  position: relative;
}

/* ═══ Cycle Posture Panel ═══ */
.posture-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

@media (max-width: 900px) {
  .posture-section {
    grid-template-columns: 1fr;
  }
}

.posture-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.posture-card .section-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.posture-main {
  display: flex;
  align-items: center;
  gap: 20px;
}

.posture-indicator {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  text-align: center;
  line-height: 1.2;
  flex-shrink: 0;
  transition: var(--transition);
}

.posture-indicator.signal-accumulation {
  background: rgba(16, 185, 129, 0.15);
  color: var(--green);
  border: 2px solid var(--green);
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.2);
}

.posture-indicator.signal-neutral {
  background: rgba(59, 130, 246, 0.15);
  color: var(--blue);
  border: 2px solid var(--blue);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.2);
}

.posture-indicator.signal-overheated {
  background: rgba(234, 179, 8, 0.15);
  color: var(--yellow);
  border: 2px solid var(--yellow);
  box-shadow: 0 0 20px rgba(234, 179, 8, 0.2);
}

.posture-indicator.signal-riskoff {
  background: rgba(239, 68, 68, 0.15);
  color: var(--red);
  border: 2px solid var(--red);
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.2);
}

.posture-info {
  flex: 1;
}

.posture-phase {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.posture-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.posture-components {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}

.posture-component {
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}

.posture-component-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.posture-component-value {
  font-size: 0.85rem;
  font-weight: 500;
}

/* Educational Signal Panel */
.signal-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.signal-panel .section-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.signal-description {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--blue);
}

.signal-label {
  font-weight: 600;
  color: var(--text-primary);
}

.signal-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.signal-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  cursor: default;
}

.signal-item:hover {
  background: var(--bg-elevated);
}

.signal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.signal-dot.dot-green { background: var(--green); }
.signal-dot.dot-blue { background: var(--blue); }
.signal-dot.dot-yellow { background: var(--yellow); }
.signal-dot.dot-red { background: var(--red); }

.signal-name {
  font-size: 0.85rem;
  font-weight: 500;
  flex: 1;
}

.signal-status {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.signal-status.good { color: var(--green); }
.signal-status.warn { color: var(--yellow); }
.signal-status.bad { color: var(--red); }

.signal-footer {
  margin-top: 16px;
  padding: 10px 12px;
  border-top: 1px solid var(--border);
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
}

/* ═══ Insights Section ═══ */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.insight-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.insight-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-2px);
  box-shadow: var(--shadow-elevated);
}

.insight-source {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-link);
  font-weight: 600;
  margin-bottom: 6px;
}

.insight-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}

.insight-summary {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.insight-date {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 10px;
}

.insight-link {
  font-size: 0.75rem;
  margin-top: 8px;
  display: inline-block;
}

/* ═══ Dashboard Section Titles ═══ */
.section-title-main {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-title-main .accent {
  width: 4px;
  height: 18px;
  background: var(--btc-orange);
  border-radius: 2px;
  display: inline-block;
}

/* ═══ Footer ═══ */
.app-footer {
  margin-top: 40px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.app-footer a {
  color: var(--text-link);
}

.disclaimer-box {
  background: rgba(17, 24, 39, 0.62);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-bottom: 18px;
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.disclaimer-box strong {
  color: var(--text-secondary);
}

.education-below-chart {
  margin-top: -4px;
  backdrop-filter: blur(10px);
}

/* ═══ Loading / Error States ═══ */
.loading-state {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  flex-direction: column;
  gap: 12px;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--btc-orange);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.error-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--red);
}

/* ═══ Scrollbar ═══ */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-highlight);
}

.chart-sub-grid {
  display: grid !important;
}

/* ═══ Responsive ═══ */
@media (max-width: 768px) {
  .app-container {
    padding: 0 12px;
  }
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  .chart-sub-grid {
    grid-template-columns: 1fr !important;
  }
  .metrics-grid {
    grid-template-columns: 1fr;
  }
  .insights-grid {
    grid-template-columns: 1fr;
  }
  .posture-main {
    flex-direction: column;
    text-align: center;
  }
  .posture-components {
    grid-template-columns: 1fr;
  }
  .chart-container {
    height: 300px;
  }
}

/* ═══ Education Cards Below Hero ═══ */
.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin: 0 0 18px;
}

.education-card {
  background: linear-gradient(180deg, rgba(26,31,46,0.74), rgba(13,18,29,0.62));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
}

.education-card h3 {
  font-size: 0.95rem;
  line-height: 1.35;
  margin: 4px 0 8px;
}

.education-card p {
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

.education-kicker {
  color: var(--btc-orange);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ═══ Context Explainers ═══ */
.chart-why {
  font-size: 0.74rem;
  line-height: 1.45;
  color: var(--text-secondary);
  margin: 0 0 12px;
}

.chart-why strong,
.metric-context strong {
  color: var(--text-primary);
}

.metric-context {
  margin-top: 10px;
  padding: 10px 12px;
  border: 1px solid rgba(148,163,184,0.12);
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.42);
  font-size: 0.72rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.metric-timeline {
  margin-top: 8px;
  font-size: 0.68rem;
  line-height: 1.4;
  color: var(--text-muted);
}