/* ==========================================================================
   Flit - Landing & Feature Pages Stylesheet
   Monolithic Brutalism / Architectural Minimalism
   ========================================================================== */

/* Hero Section */
.hero-section {
  padding: 6.5rem 0 5rem;
  position: relative;
  text-align: center;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-base);
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.hero-pill span {
  color: var(--text-primary);
}

.hero-pill .badge-coming-soon {
  color: var(--pastel-mint);
  margin-right: 0.25rem;
}

.hero-pill .hero-pill-divider {
  opacity: 0.4;
  color: var(--text-muted);
}

.hero-title {
  max-width: 1040px;
  margin: 0 auto 1.5rem;
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 6vw, 4.75rem);
  letter-spacing: -0.04em;
  font-weight: 900;
  text-transform: uppercase;
  line-height: 0.95;
  color: var(--text-primary);
}

.hero-subtitle {
  max-width: 780px;
  margin: 0 auto 2.75rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  letter-spacing: -0.01em;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 4rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   Terminal / Live Gateway Simulation (Brutalist Precision)
   ========================================================================== */
.hero-terminal-container {
  max-width: 1040px;
  margin: 0 auto;
  position: relative;
}

.hero-terminal-container::before {
  display: none;
}

.terminal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  text-align: left;
  position: relative;
}

[data-theme="light"] .terminal-card {
  background: #ffffff;
  border-color: #cdc7b8;
}

.terminal-tabs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-subtle);
}

.tab-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--text-primary);
  background: var(--bg-surface);
  border-color: var(--border-medium);
}

.terminal-content {
  padding: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.825rem;
  line-height: 1.7;
  max-height: 420px;
  overflow-y: auto;
  color: var(--text-primary);
}

.terminal-line {
  margin-bottom: 0.6rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  opacity: 0;
  animation: fadeInUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.terminal-line:nth-child(1) { animation-delay: 0.1s; }
.terminal-line:nth-child(2) { animation-delay: 0.2s; }
.terminal-line:nth-child(3) { animation-delay: 0.3s; }
.terminal-line:nth-child(4) { animation-delay: 0.4s; }
.terminal-line:nth-child(5) { animation-delay: 0.5s; }
.terminal-line:nth-child(6) { animation-delay: 0.6s; }
.terminal-line:nth-child(7) { animation-delay: 0.7s; }

.terminal-prompt {
  color: var(--text-muted);
  user-select: none;
}

.terminal-highlight {
  color: var(--accent-success);
}

/* Brutalist Tier Tags */
.terminal-tag {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border-radius: var(--radius-xs, 2px);
  border: 1px solid currentColor;
}

.tag-fast {
  background: rgba(56, 189, 248, 0.1);
  color: var(--pastel-sky);
  border-color: var(--pastel-sky);
}

.tag-smart {
  background: rgba(167, 139, 250, 0.1);
  color: var(--pastel-lavender);
  border-color: var(--pastel-lavender);
}

.tag-power {
  background: rgba(192, 132, 252, 0.1);
  color: var(--pastel-lilac);
  border-color: var(--pastel-lilac);
}

.tag-blocked {
  background: rgba(244, 63, 94, 0.1);
  color: var(--pastel-rose);
  border-color: var(--pastel-rose);
}

[data-theme="light"] .tag-fast {
  background: rgba(2, 132, 199, 0.12);
  color: #0369a1;
  border-color: #0284c7;
}

[data-theme="light"] .tag-smart {
  background: rgba(99, 102, 241, 0.12);
  color: #4338ca;
  border-color: #6366f1;
}

[data-theme="light"] .tag-power {
  background: rgba(147, 51, 234, 0.12);
  color: #7e22ce;
  border-color: #9333ea;
}

[data-theme="light"] .tag-blocked {
  background: rgba(225, 29, 72, 0.12);
  color: #be123c;
  border-color: #e11d48;
}

/* ==========================================================================
   Value Metrics Section
   ========================================================================== */
.metrics-strip {
  padding: 3.5rem 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  margin: 3.5rem 0 5rem;
}

.metric-item {
  text-align: center;
  transition: transform var(--transition-fast);
}

.metric-item:hover {
  transform: translateY(-2px);
}

.metric-value {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  margin-bottom: 0.3rem;
  color: var(--text-primary);
  text-transform: uppercase;
}

.metric-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--text-muted);
}

/* ==========================================================================
   Feature Showcases & Cards
   ========================================================================== */
.section-header {
  text-align: center;
  max-width: 840px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.35em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.section-title {
  margin-bottom: 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.035em;
}

.feature-card {
  position: relative;
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 2rem;
  transition: border-color var(--transition-normal);
}

.feature-card:hover {
  border-color: var(--border-glow);
}

.feature-icon-box {
  width: 44px;
  height: 44px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.feature-icon-box svg {
  width: 20px;
  height: 20px;
}

.feature-card h3 {
  margin-bottom: 0.75rem;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.feature-card p {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* ==========================================================================
   Tiers Visualizer Cards
   ========================================================================== */
.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2.5rem 0;
}

.tier-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 2.25rem;
  position: relative;
  transition: border-color var(--transition-normal);
}

.tier-card:hover {
  border-color: var(--border-glow);
}

.tier-card.featured {
  border-color: var(--text-primary);
}

.tier-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.tier-name {
  font-size: 1.25rem;
  font-weight: 800;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: -0.03em;
}

.tier-desc {
  font-family: var(--font-mono);
  font-size: 0.825rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.tier-models-list {
  list-style: none;
  margin: 1.5rem 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.tier-models-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-secondary);
}

.tier-models-list li strong {
  color: var(--text-primary);
}

/* ==========================================================================
   Architecture Flow Preview
   ========================================================================== */
.arch-diagram-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 2.5rem;
  margin: 3rem 0;
  position: relative;
}

.flow-step-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  position: relative;
}

.flow-step-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  padding: 1.6rem;
  position: relative;
  transition: border-color var(--transition-normal);
}

.flow-step-card:hover {
  border-color: var(--border-glow);
}

.flow-step-num {
  width: 28px;
  height: 28px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.flow-step-card h4 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.flow-step-card p {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Comparison Table (Brutalist Styled)
   ========================================================================== */
.comparison-table-wrapper {
  overflow-x: auto;
  margin: 3rem 0;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

.comparison-table th, .comparison-table td {
  padding: 1.15rem 1.4rem;
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color var(--transition-fast);
}

.comparison-table th {
  background: var(--bg-elevated);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-primary);
}

.comparison-table th.highlight-col, .comparison-table td.highlight-col {
  background: rgba(255, 255, 255, 0.03);
  border-left: 1px solid var(--border-medium);
  border-right: 1px solid var(--border-medium);
}

[data-theme="light"] .comparison-table th.highlight-col,
[data-theme="light"] .comparison-table td.highlight-col {
  background: rgba(20, 20, 19, 0.03);
}

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

.check-icon {
  color: var(--accent-success);
  font-weight: 700;
}

.cross-icon {
  color: var(--text-muted);
}

/* ==========================================================================
   CTA Banner
   ========================================================================== */
.cta-banner {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  padding: 4.5rem 2rem;
  text-align: center;
  margin: 6rem 0 3rem;
  position: relative;
  overflow: hidden;
}

.cta-banner h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 4vw, 3.25rem);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: -0.035em;
}

.cta-banner p {
  max-width: 680px;
  margin: 0 auto 2.5rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-secondary);
}

@media (max-width: 1024px) {
  .flow-step-list { grid-template-columns: repeat(2, 1fr); }
  .tier-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hero-section { padding: 4rem 0 3rem; }
  .flow-step-list { grid-template-columns: 1fr; }
  .metrics-strip { margin: 2rem 0 3rem; }
}

/* ==========================================================================
   Interactive End-to-End Data Flow Animation
   ========================================================================== */
.flow-visualizer-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  margin-bottom: 4rem;
}

.flow-controls-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.flow-btn-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.flow-step-pills {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  max-width: 100%;
}

.flow-pill-btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  padding: 0.4rem 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.flow-pill-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.flow-pill-btn.active {
  background: var(--bg-surface);
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.flow-canvas {
  display: grid;
  grid-template-columns: 1.2fr 0.6fr 1.2fr 0.6fr 1.5fr 0.6fr 1.3fr;
  align-items: center;
  margin: 2rem 0;
  position: relative;
  padding: 1.5rem 0;
}

.flow-node {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 1.25rem 1rem;
  text-align: center;
  position: relative;
  transition: border-color var(--transition-normal);
  z-index: 2;
}

.flow-node.active {
  border-color: var(--text-primary);
  background: var(--bg-card-hover);
}

.flow-node.return-active {
  border-color: var(--accent-success);
  background: var(--bg-card-hover);
}

.flow-node-icon {
  width: 34px;
  height: 34px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  margin: 0 auto 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.flow-node h5 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}

.flow-node p {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.3;
}

.flow-node-subtags {
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.flow-subtag {
  font-size: 0.68rem;
  padding: 0.15rem 0.35rem;
  font-family: var(--font-mono);
  border: 1px solid var(--border-subtle);
}

.flow-channel {
  position: relative;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flow-track {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border-medium);
}

.flow-packet {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--text-primary);
  opacity: 0;
  transition: opacity 0.2s;
}

.flow-packet.travel-forward {
  opacity: 1;
  animation: travelForward 1.2s infinite ease-in-out;
}

.flow-packet.travel-reverse {
  opacity: 1;
  background: var(--accent-success);
  animation: travelReverse 1.2s infinite ease-in-out;
}

@keyframes travelForward {
  0% { left: 0%; opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { left: 100%; opacity: 0; }
}

@keyframes travelReverse {
  0% { right: 0%; opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { right: 100%; opacity: 0; }
}

/* Telemetry Details Panel */
.flow-telemetry-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  margin-top: 1.5rem;
}

.flow-telemetry-header {
  padding: 0.65rem 1.15rem;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.flow-telemetry-body {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.825rem;
  line-height: 1.6;
  color: var(--text-primary);
}

@media (max-width: 960px) {
  .flow-canvas {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  .flow-channel {
    height: 16px;
    transform: rotate(90deg);
    margin: 0.5rem auto;
    width: 40px;
  }
}