/* ============================================
   Historical Date Calculator — Styles
   ============================================ */

/* Layout */
.hist-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-xl);
  max-width: var(--container-max);
  margin: 0 auto;
  align-items: start;
}

.hist-input-panel,
.hist-result-panel {
  padding: var(--space-xl);
}

.panel-title {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
}

.hint-text {
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

/* Input Rows */
.hist-input-row {
  display: flex;
  gap: var(--space-md);
  align-items: end;
  flex-wrap: wrap;
}

.hist-input-row .form-group {
  flex: 1;
  min-width: 80px;
}

.year-input {
  font-family: 'JetBrains Mono', monospace;
}

/* Era Toggle */
.era-toggle {
  display: flex;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--surface-glass-border);
}

.era-btn {
  flex: 1;
  padding: 0.6rem 1rem;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-align: center;
}

.era-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

.era-btn.active {
  background: var(--gradient-accent);
  color: white;
  box-shadow: 0 2px 10px rgba(108, 99, 255, 0.3);
}

/* Divider OR */
.divider-or {
  text-align: center;
  color: var(--text-muted);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 2px;
  position: relative;
}

.divider-or::before,
.divider-or::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 30%;
  height: 1px;
  background: var(--surface-glass-border);
}

.divider-or::before { left: 0; }
.divider-or::after { right: 0; }

/* Big Result Display */
.hist-big-result {
  text-align: center;
  padding: var(--space-lg);
  background: rgba(108, 99, 255, 0.06);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(108, 99, 255, 0.1);
}

.hist-result-number {
  font-size: 3rem;
  font-weight: var(--fw-bold);
  font-family: 'JetBrains Mono', monospace;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.hist-result-label {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-top: 4px;
}

/* Sub Results */
.hist-result-sub {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.hist-sub-item {
  text-align: center;
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
}

.sub-val {
  display: block;
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
}

.sub-label {
  display: block;
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

/* Fun Fact Box */
.hist-fun-fact {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: rgba(255, 167, 38, 0.06);
  border: 1px solid rgba(255, 167, 38, 0.12);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
}

.fact-icon {
  font-size: var(--fs-xl);
  flex-shrink: 0;
}

/* Day Finder Result */
.day-result-big {
  text-align: center;
  padding: var(--space-xl);
  background: rgba(108, 99, 255, 0.06);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(108, 99, 255, 0.1);
}

.day-name-display {
  font-size: 2.5rem;
  font-weight: var(--fw-extrabold);
  font-family: var(--font-heading);
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.day-full-date {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-top: var(--space-sm);
}

/* Leap Year Result */
.leap-result-big {
  text-align: center;
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
}

.leap-badge {
  font-size: 3rem;
  font-weight: var(--fw-extrabold);
  font-family: var(--font-heading);
  line-height: 1;
}

.leap-badge.yes {
  color: var(--success);
}

.leap-badge.no {
  color: var(--error);
}

.leap-year-text {
  font-size: var(--fs-md);
  color: var(--text-secondary);
  margin-top: var(--space-sm);
}

.leap-reason {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  text-align: center;
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
}

.leap-nearby h4 {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-sm);
}

.leap-nearby-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.leap-year-pill {
  padding: 0.3rem 0.8rem;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.15);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-family: 'JetBrains Mono', monospace;
  font-weight: var(--fw-semibold);
  color: var(--accent-primary);
}

.leap-year-pill.current {
  background: var(--gradient-accent);
  color: white;
  border-color: transparent;
}

/* ═══ Famous Events ═══ */
.events-container {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding: var(--space-xl);
}

.events-filter-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.events-filter {
  max-width: 400px;
}

.event-cat-btns {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.cat-btn {
  padding: 0.35rem 0.9rem;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--surface-glass-border);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.3s ease;
}

.cat-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
}

.cat-btn.active {
  background: var(--gradient-accent);
  color: white;
  border-color: transparent;
}

.events-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-height: 600px;
  overflow-y: auto;
  padding-right: var(--space-sm);
}

.event-card {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
}

.event-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(108, 99, 255, 0.15);
  transform: translateX(4px);
}

.event-card[data-category="ancient-india"] { border-left: 3px solid #FFA726; }
.event-card[data-category="world"] { border-left: 3px solid #6C63FF; }
.event-card[data-category="modern-india"] { border-left: 3px solid #4ECDC4; }
.event-card[data-category="science"] { border-left: 3px solid #FF6B9D; }

.event-year {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--accent-primary);
  min-width: 100px;
  text-align: center;
  flex-shrink: 0;
}

.event-info {
  flex: 1;
}

.event-title {
  font-family: var(--font-heading);
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  margin-bottom: 4px;
}

.event-desc {
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.event-ago {
  padding: 0.25rem 0.7rem;
  background: rgba(78, 205, 196, 0.12);
  border: 1px solid rgba(78, 205, 196, 0.15);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ═══ Responsive ═══ */
@media (max-width: 900px) {
  .hist-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hist-input-row {
    flex-direction: column;
  }

  .hist-result-sub {
    grid-template-columns: 1fr;
  }

  .hist-result-number,
  .day-name-display {
    font-size: 2rem;
  }

  .event-card {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .event-year {
    min-width: auto;
    text-align: left;
  }

  .event-ago {
    align-self: flex-start;
  }

  .event-cat-btns {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: var(--space-xs);
  }

  .cat-btn {
    flex-shrink: 0;
  }
}

@media (max-width: 480px) {
  .leap-badge {
    font-size: 2rem;
  }
}