/* ========================================
   DESIGN TOKENS
   ======================================== */

:root {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', 'Helvetica Neue', Arial, sans-serif;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
}

/* ========================================
   COLOR — Dark Intelligence Theme
   ======================================== */

:root, [data-theme="dark"] {
  --color-bg: #0c0f14;
  --color-surface: #131720;
  --color-surface-2: #1a1f2c;
  --color-surface-offset: #171c26;
  --color-border: #2a3040;
  --color-divider: #1e2433;

  --color-text: #d4d8e0;
  --color-text-muted: #7e8594;
  --color-text-faint: #4a5060;

  --color-primary: #4f98a3;
  --color-primary-hover: #3a7f8c;
  --color-primary-dim: rgba(79, 152, 163, 0.15);

  --color-critical: #e05555;
  --color-critical-dim: rgba(224, 85, 85, 0.12);
  --color-warning: #e8a44c;
  --color-warning-dim: rgba(232, 164, 76, 0.12);
  --color-success: #4aba7a;
  --color-success-dim: rgba(74, 186, 122, 0.12);
  --color-info: #5591c7;
  --color-info-dim: rgba(85, 145, 199, 0.12);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
}

[data-theme="light"] {
  --color-bg: #f4f3f0;
  --color-surface: #ffffff;
  --color-surface-2: #f9f8f6;
  --color-surface-offset: #eeecea;
  --color-border: #d4d1ca;
  --color-divider: #e5e3de;

  --color-text: #1a1d24;
  --color-text-muted: #5c6370;
  --color-text-faint: #9ca0a8;

  --color-primary: #0a6068;
  --color-primary-hover: #084e55;
  --color-primary-dim: rgba(10, 96, 104, 0.08);

  --color-critical: #c03030;
  --color-critical-dim: rgba(192, 48, 48, 0.08);
  --color-warning: #b07020;
  --color-warning-dim: rgba(176, 112, 32, 0.08);
  --color-success: #2a7a4a;
  --color-success-dim: rgba(42, 122, 74, 0.08);
  --color-info: #2a6094;
  --color-info-dim: rgba(42, 96, 148, 0.08);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
}

/* ========================================
   HEADER
   ======================================== */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.header-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-text);
  white-space: nowrap;
}

.header-nav {
  display: flex;
  gap: var(--space-6);
}

.header-nav a {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
}

.header-nav a:hover {
  color: var(--color-primary);
}

.theme-toggle {
  padding: var(--space-2);
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-primary-dim);
}

@media (max-width: 768px) {
  .header-nav { display: none; }
  .header-logo span { font-size: var(--text-xs); }
}

/* ========================================
   HERO
   ======================================== */

.hero {
  padding: clamp(var(--space-16), 10vw, var(--space-32)) var(--space-6) clamp(var(--space-12), 6vw, var(--space-20));
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-border);
}

.hero-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-critical);
  padding: var(--space-1) var(--space-3);
  background: var(--color-critical-dim);
  border: 1px solid color-mix(in srgb, var(--color-critical) 25%, transparent);
  border-radius: var(--radius-sm);
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-critical);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-date {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

.hero-title {
  font-family: var(--font-body);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1.05;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.hero-title em {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
  margin-bottom: var(--space-10);
  line-height: 1.7;
}

.hero-kpis {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.kpi-card {
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.kpi-label {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
  font-weight: 500;
}

.kpi-value {
  display: block;
  font-size: var(--text-xl);
  font-weight: 700;
  font-variant-numeric: tabular-nums lining-nums;
  line-height: 1;
  margin-bottom: var(--space-2);
}

.kpi-delta {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.kpi-critical .kpi-value { color: var(--color-success); }
.kpi-critical .kpi-delta { color: var(--color-success); }
.kpi-warning .kpi-value { color: var(--color-warning); }
.kpi-warning .kpi-delta { color: var(--color-warning); }
.kpi-danger .kpi-value { color: var(--color-critical); }
.kpi-danger .kpi-delta { color: var(--color-critical); }
.kpi-info .kpi-value { color: var(--color-info); }
.kpi-info .kpi-delta { color: var(--color-info); }

@media (max-width: 768px) {
  .hero-kpis { grid-template-columns: repeat(2, 1fr); }
  .hero-title { font-size: var(--text-2xl); }
}

@media (max-width: 480px) {
  .hero-kpis { grid-template-columns: 1fr; }
}

/* ========================================
   SECTIONS
   ======================================== */

.section {
  padding: clamp(var(--space-12), 6vw, var(--space-24)) var(--space-6);
}

.section-alt {
  background: var(--color-surface);
}

.section-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
}

.section-header {
  margin-bottom: var(--space-10);
}

.section-number {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
  font-variant-numeric: tabular-nums;
}

.section-header h2 {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 60ch;
  line-height: 1.7;
}

.section-desc strong {
  color: var(--color-text);
  font-weight: 600;
}

/* ========================================
   OVERVIEW GRID
   ======================================== */

.overview-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.overview-card {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.overview-card h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.overview-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  line-height: 1.6;
}

.overview-card p strong {
  color: var(--color-text);
}

@media (max-width: 768px) {
  .overview-grid { grid-template-columns: 1fr; }
}

/* ========================================
   MARKET CARDS & GRID
   ======================================== */

.market-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.market-card {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
}

.section-alt .market-card {
  background: var(--color-surface-2);
}

.market-card-featured {
  grid-column: span 1;
}

.market-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.market-header h3 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}

.market-volume {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.market-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-3);
  line-height: 1.5;
  font-style: italic;
}

.market-link {
  display: inline-block;
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
}

.market-link:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

@media (max-width: 768px) {
  .market-grid { grid-template-columns: 1fr; }
  .market-card-featured { grid-column: span 1; }
}

/* ========================================
   PROBABILITY BARS
   ======================================== */

.probability-bars {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.prob-row {
  display: grid;
  grid-template-columns: minmax(110px, 160px) 1fr 44px;
  align-items: center;
  gap: var(--space-3);
}

.prob-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.prob-bar-container {
  height: 8px;
  background: var(--color-surface-offset, var(--color-divider));
  border-radius: 4px;
  overflow: hidden;
}

.prob-bar {
  height: 100%;
  background: var(--color-primary);
  border-radius: 4px;
  transition: width 800ms cubic-bezier(0.16, 1, 0.3, 1);
  min-width: 3px;
}

.prob-bar-critical { background: var(--color-critical); }
.prob-bar-high { background: var(--color-warning); }
.prob-bar-success { background: var(--color-success); }
.prob-bar-low { background: var(--color-text-faint); }

.prob-value {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 480px) {
  .prob-row {
    grid-template-columns: minmax(80px, 120px) 1fr 40px;
    gap: var(--space-2);
  }
}

/* ========================================
   CHARTS
   ======================================== */

.chart-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
}

.chart-section {
  margin-top: var(--space-10);
}

.chart-section h3 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.chart-wide {
  aspect-ratio: 21 / 9;
}

@media (max-width: 768px) {
  .chart-container { aspect-ratio: 4 / 3; }
  .chart-wide { aspect-ratio: 16 / 10; }
}

/* ========================================
   TAKEAWAYS
   ======================================== */

.section-takeaways {
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);
  border-top: 1px solid var(--color-border);
}

.takeaway-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.takeaway-card {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
}

.takeaway-icon {
  font-size: var(--text-lg);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  line-height: 1;
}

.takeaway-card h3 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.takeaway-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

.takeaway-card p strong {
  color: var(--color-text);
}

.volume-callout {
  padding: var(--space-6) var(--space-8);
  border-radius: var(--radius-lg);
  background: var(--color-primary-dim);
  border: 1px solid color-mix(in srgb, var(--color-primary) 20%, transparent);
}

.volume-callout h3 {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.volume-callout p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

.volume-callout p strong {
  color: var(--color-text);
}

@media (max-width: 768px) {
  .takeaway-grid { grid-template-columns: 1fr; }
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  padding: var(--space-8) var(--space-6);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.footer-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  text-align: center;
}

.footer-disclaimer {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  max-width: 60ch;
  margin-inline: auto;
}

.footer-disclaimer a {
  color: var(--color-primary);
  text-decoration: none;
}

.footer-attribution {
  font-size: var(--text-xs);
}

.footer-attribution a {
  color: var(--color-text-faint);
  text-decoration: none;
}

.footer-attribution a:hover {
  color: var(--color-primary);
}

/* ========================================
   SCROLL ANIMATIONS
   ======================================== */

.section-header,
.market-card,
.overview-card,
.kpi-card,
.takeaway-card,
.volume-callout,
.chart-section {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .section-header,
  .market-card,
  .overview-card,
  .kpi-card,
  .takeaway-card,
  .volume-callout,
  .chart-section {
    opacity: 1;
    transform: none;
  }
}