/* ==========================================================================
   Fluid Palette Tech - Material Design 3 (M3) Components
   (Hero Metrics, Interactive Demos, Case Studies, Writing, Resume)
   ========================================================================== */

/* Section & Tags */
.section {
  padding: 64px 0;
}

.section-header {
  margin-bottom: 40px;
  max-width: 720px;
}

.section-tag, .eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--md-sys-color-primary);
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  padding: 4px 12px;
  border-radius: var(--md-shape-sm);
  margin-bottom: 12px;
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

/* Minimal Hero */
.hero-minimal {
  padding: 80px 0 50px;
}

.hero-lead {
  font-size: 1.15rem;
  line-height: 1.6;
  margin: 20px 0 32px;
  max-width: 760px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

/* Material 3 Metric Cards */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.metric-card {
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-shape-md);
  padding: 24px;
  box-shadow: var(--md-elevation-1);
  transition: var(--transition-smooth);
}

.metric-card:hover {
  box-shadow: var(--md-elevation-2);
  border-color: var(--md-sys-color-outline);
}

.metric-card strong {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--md-sys-color-primary);
  line-height: 1.1;
  margin-bottom: 6px;
  font-family: var(--font-sans);
}

.metric-card span {
  font-size: 0.86rem;
  color: var(--md-sys-color-on-surface-variant);
  font-weight: 500;
}

/* Material 3 Interactive Live Demo Box */
.demo-box {
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-shape-lg);
  overflow: hidden;
  box-shadow: var(--md-elevation-2);
}

.demo-tabs {
  display: flex;
  background: var(--md-sys-color-surface-container);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  overflow-x: auto;
}

.demo-tab {
  padding: 16px 24px;
  background: transparent;
  border: none;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition-smooth);
  white-space: nowrap;
}

.demo-tab:hover {
  color: var(--md-sys-color-primary);
  background: var(--md-sys-color-surface-container-high);
}

.demo-tab.active {
  color: var(--md-sys-color-primary);
  border-bottom-color: var(--md-sys-color-primary);
  background: var(--md-sys-color-surface);
}

.demo-panel {
  display: none;
  padding: 32px;
}

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

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

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

.calc-result-box {
  background: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-shape-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.calc-result-score {
  font-size: 3.5rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--md-sys-color-primary);
  line-height: 1;
  margin: 12px 0;
}

/* Material 3 Case Study Cards */
.case-studies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.case-card {
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-shape-lg);
  padding: 30px;
  box-shadow: var(--md-elevation-1);
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

.case-card:hover {
  box-shadow: var(--md-elevation-3);
  transform: translateY(-3px);
  border-color: var(--md-sys-color-outline);
}

.case-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.case-domain {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--md-sys-color-primary);
  text-transform: uppercase;
}

.case-metric-highlight {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--md-sys-color-secondary);
}

.case-title {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.case-desc {
  font-size: 0.92rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.tag-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface-variant);
  padding: 4px 10px;
  border-radius: var(--md-shape-xs);
  border: 1px solid var(--md-sys-color-outline-variant);
}

/* Material 3 Resume Timeline */
.resume-timeline {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.resume-item {
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-shape-md);
  padding: 24px;
  box-shadow: var(--md-elevation-1);
}

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

.resume-role {
  font-size: 1.15rem;
  font-weight: 700;
}

.resume-period {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--md-sys-color-primary);
}

.resume-company {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 12px;
}

/* Ad Unit Container */
.ad-slot-container {
  margin: 36px auto;
  padding: 14px;
  background: var(--md-sys-color-surface-container-low);
  border: 1px dashed var(--md-sys-color-outline);
  border-radius: var(--md-shape-md);
  text-align: center;
  max-width: 970px;
}

.ad-slot-label {
  display: block;
  font-size: 0.68rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--md-sys-color-outline);
  margin-bottom: 6px;
}

.ad-banner-leaderboard {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.85rem;
}