/* ── HIPForge Custom stylesheet — Zero-Cost Showcase ─────────────────── */

:root {
  /* Design Tokens — Light Theme (Default) */
  --bg-primary:      #F9F8F6;
  --bg-secondary:    #EBE5DE;
  --bg-card:         #F9F8F6;
  --bg-card-alt:     #EBE5DE;
  --bg-dark-section: #1A1A1A;
  --text-primary:    #1A1A1A;
  --text-muted:      #6C6863;
  --text-inverted:   #F9F8F6;
  --border-primary:  rgba(26, 26, 26, 0.10);
  --border-strong:   rgba(26, 26, 26, 0.20);
  --border-subtle:   rgba(26, 26, 26, 0.06);
  --surface-input:   rgba(235, 229, 222, 0.20);
  --surface-hover:   rgba(235, 229, 222, 0.40);
  --shadow-card:     0 2px 12px rgba(0,0,0,0.04);
  
  --text-on-dark:      #F9F8F6;
  --text-on-dark-muted: #A6A29E;
  --border-on-dark:    rgba(249, 248, 246, 0.15);

  /* Brand Accents — White, Red, Dark Gray */
  --brand-red:       #C22F2F;
  --brand-red-hover: #9E1F1F;
  --brand-red-light: #FEE2E2;
  --brand-red-text:  #991B1B;
}

[data-theme="dark"] {
  /* Design Tokens — Dark Theme Overrides */
  --bg-primary:      #141210;
  --bg-secondary:    #1E1B18;
  --bg-card:         #1A1714;
  --bg-card-alt:     #241F1B;
  --bg-dark-section: #0D0B09;
  --text-primary:    #EDE8E2;
  --text-muted:      #8C8480;
  --text-inverted:   #1A1A1A;
  --border-primary:  rgba(237, 232, 226, 0.10);
  --border-strong:   rgba(237, 232, 226, 0.20);
  --border-subtle:   rgba(237, 232, 226, 0.05);
  --surface-input:   rgba(237, 232, 226, 0.04);
  --surface-hover:   rgba(237, 232, 226, 0.07);
  --shadow-card:     0 2px 12px rgba(0,0,0,0.30);

  --text-on-dark:      #F9F8F6;
  --text-on-dark-muted: #A6A29E;
  --border-on-dark:    rgba(249, 248, 246, 0.15);

  --brand-red:       #EF4444;
  --brand-red-hover: #F87171;
  --brand-red-light: #450A0A;
  --brand-red-text:  #FECACA;
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important; /* Strictly rectangular — luxury style */
  transition: background-color 300ms ease-out, color 300ms ease-out, border-color 200ms ease-out;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.625;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

/* Paper Noise overlay */
.paper-noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* Vertical grid lines (luxury editorial decoration) */
.grid-lines {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 40;
  display: none;
}

@media (min-width: 1024px) {
  .grid-lines {
    display: block;
  }
}

.grid-line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background-color: var(--border-subtle);
}

.grid-line-1 { left: 8%; }
.grid-line-2 { left: 33%; }
.grid-line-3 { right: 33%; }
.grid-line-4 { right: 8%; }

/* Typography */
h1, h2, h3, h4, h5 {
  font-family: 'Playfair Display', Georgia, serif;
  font-weight: 400;
  line-height: 1.15;
  color: var(--text-primary);
}

p {
  color: var(--text-muted);
}

code, pre {
  font-family: 'JetBrains Mono', monospace;
}

/* Helper utilities */
.container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 1024px) {
  .container {
    padding: 0 4rem;
  }
}

.overline {
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--brand-red);
  display: inline-block;
  margin-bottom: 0.5rem;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  background-color: rgba(249, 248, 246, 0.92);
  border-bottom: 1px solid var(--border-primary);
}

[data-theme="dark"] .navbar {
  background-color: rgba(20, 18, 16, 0.92);
}

.navbar-container {
  display: flex;
  height: 4.5rem;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  text-decoration: none;
}

.navbar-logo {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.35rem;
  color: var(--text-primary);
}

.navbar-subtitle {
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.navbar-controls {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-links {
  display: none;
  gap: 2rem;
  list-style: none;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-link {
  text-decoration: none;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  position: relative;
  padding-bottom: 0.25rem;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  height: 1px;
  width: 0;
  background-color: var(--brand-red);
  transition: width 0.4s ease;
}

.nav-link:hover::after {
  width: 100%;
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border-primary);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.status-dot {
  width: 6px;
  height: 6px;
  background-color: #10B981;
  animation: pulse-slow 3s infinite ease-in-out;
}

.theme-toggle {
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-primary);
  color: var(--text-muted);
  cursor: pointer;
}

.theme-toggle:hover {
  color: var(--brand-red);
  border-color: var(--brand-red);
}

/* Hero Section */
.hero {
  padding: 5rem 0;
  border-bottom: 1px solid var(--border-primary);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.25fr 0.75fr;
    gap: 4rem;
  }
}

.hero-title {
  font-size: 2.5rem;
  line-height: 1.1;
  margin-top: 0.5rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 3.5rem;
  }
}

@media (min-width: 1200px) {
  .hero-title {
    font-size: 4.5rem;
  }
}

.hero-title em {
  font-style: italic;
  color: var(--brand-red);
}

.hero-description {
  font-size: 1rem;
  line-height: 1.7;
  max-width: 600px;
  margin-bottom: 2rem;
}

.hero-notice-box {
  background-color: var(--brand-red-light);
  border-left: 2px solid var(--brand-red);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}

.hero-notice-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--brand-red-text);
  margin-bottom: 0.25rem;
}

.hero-notice-text {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--brand-red-text);
}

/* Buttons */
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
}

.btn-fill {
  background-color: var(--text-primary);
  color: var(--bg-primary);
  border: none;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.btn-fill::before {
  content: '';
  position: absolute;
  inset: 0;
  background-color: var(--brand-red);
  transform: translateX(-100%);
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  z-index: 0;
}

.btn-fill:hover::before {
  transform: translateX(0);
}

.btn-fill > * {
  position: relative;
  z-index: 1;
}

.btn-outline {
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--text-primary);
  background-color: var(--text-primary);
  color: var(--bg-primary);
}

/* How It Works Section */
.workflow-section {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--border-primary);
}

.section-header {
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--border-primary);
  padding-bottom: 1rem;
}

.section-title {
  font-size: 2rem;
  margin-top: 0.25rem;
}

.section-title em {
  font-style: italic;
  color: var(--brand-red);
}

.workflow-steps-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .workflow-steps-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px) {
  .workflow-steps-grid {
    grid-template-columns: repeat(8, 1fr);
  }
}

.workflow-step {
  border-top: 1px solid var(--border-strong);
  padding-top: 1.25rem;
  position: relative;
}

.step-num {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 2.5rem;
  line-height: 1;
  color: rgba(26, 26, 26, 0.08);
  margin-bottom: 0.75rem;
}

[data-theme="dark"] .step-num {
  color: rgba(237, 232, 226, 0.08);
}

.step-title {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

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

/* Dashboard Section */
.dashboard-section {
  padding: 5rem 0;
}

.selector-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-primary);
  margin-bottom: 2.5rem;
  gap: 0.5rem;
}

.selector-tab {
  padding: 1rem 2rem;
  background: transparent;
  border: 1px solid transparent;
  border-bottom: none;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  cursor: pointer;
  margin-bottom: -1px;
}

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

.selector-tab.active {
  color: var(--brand-red);
  border-color: var(--border-primary);
  background-color: var(--bg-card);
  border-top: 2px solid var(--brand-red);
}

/* Dashboard Panel layout */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: 1.25fr 0.75fr;
    gap: 3.5rem;
  }
}

.dashboard-main {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.dashboard-sidebar {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

/* Panel Containers */
.panel {
  background-color: var(--bg-card);
  border: 1px solid var(--border-primary);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.panel-title svg {
  width: 0.875rem;
  height: 0.875rem;
}

.panel-body {
  padding: 1.25rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.15rem 0.5rem;
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--border-primary);
}

.badge-success {
  color: #10B981;
  border-color: rgba(16, 185, 129, 0.2);
  background-color: rgba(16, 185, 129, 0.05);
}

.badge-failure {
  color: #EF4444;
  border-color: rgba(239, 68, 68, 0.2);
  background-color: rgba(239, 68, 68, 0.05);
}

.badge-warning {
  color: #F59E0B;
  border-color: rgba(245, 158, 11, 0.2);
  background-color: rgba(245, 158, 11, 0.05);
}

.badge-info {
  color: var(--text-muted);
  border-color: var(--border-primary);
  background-color: var(--bg-secondary);
}

/* Timeline */
.timeline-list {
  display: flex;
  flex-direction: column;
}

.timeline-item {
  display: flex;
  gap: 1.25rem;
}

.timeline-left {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.timeline-icon {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-primary);
  background-color: transparent;
  font-size: 0.75rem;
}

.timeline-icon.completed {
  border-color: var(--brand-red);
  background-color: var(--brand-red);
  color: #FFFFFF;
}

.timeline-icon.active {
  border-color: var(--text-primary);
  background-color: var(--text-primary);
  color: var(--bg-primary);
}

.timeline-icon.failed {
  border-color: #DC2626;
  background-color: #DC2626;
  color: #FFFFFF;
}

.timeline-icon.skipped {
  opacity: 0.3;
}

.timeline-line {
  width: 1px;
  flex-grow: 1;
  min-height: 2rem;
  background-color: var(--border-primary);
}

.timeline-line.active-path {
  background-color: rgba(194, 47, 47, 0.4);
}

.timeline-right {
  flex-grow: 1;
  padding-bottom: 1.5rem;
}

.timeline-card {
  border-top: 1px solid var(--border-primary);
  padding: 1rem;
  cursor: pointer;
}

.timeline-card:hover {
  background-color: var(--surface-hover);
}

.timeline-card.active {
  border-left: 2px solid var(--brand-red);
  background-color: var(--brand-red-light);
}

[data-theme="dark"] .timeline-card.active {
  background-color: rgba(239, 68, 68, 0.1);
}

.timeline-card.failed {
  border-left: 2px solid #DC2626;
  background-color: rgba(220, 38, 38, 0.05);
}

.timeline-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.25rem;
}

.timeline-stage-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.timeline-stage-time {
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  opacity: 0.6;
}

.timeline-stage-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.timeline-stage-logs {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-subtle);
  display: none;
}

.timeline-card.expanded .timeline-stage-logs {
  display: block;
}

/* Terminals / Pre-blocks */
.terminal-block {
  background-color: #1A1A1A;
  color: #EDE8E2;
  padding: 1rem;
  font-size: 0.75rem;
  line-height: 1.6;
  overflow-y: auto;
  max-height: 250px;
  border: 1px solid var(--border-primary);
  white-space: pre-wrap;
}

.terminal-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1rem;
  background-color: #262626;
  color: #A6A29E;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--border-primary);
  border-bottom: none;
}

.terminal-toolbar-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.terminal-toolbar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.terminal-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #A6A29E;
  padding: 0.25rem 0.5rem;
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
}

.terminal-btn:hover {
  border-color: #FFFFFF;
  color: #FFFFFF;
}

.terminal-row {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.125rem;
}

.terminal-num {
  width: 1.5rem;
  text-align: right;
  color: #6C6863;
  opacity: 0.5;
  user-select: none;
}

.terminal-time {
  color: #6C6863;
}

.terminal-level {
  width: 3.5rem;
}

.terminal-level.error { color: #F87171; }
.terminal-level.warn { color: #FBBF24; }
.terminal-level.info { color: #34D399; }

.terminal-content {
  flex-grow: 1;
}

/* Journal layout */
.journal-item {
  border: 1px solid var(--border-primary);
  margin-bottom: 1rem;
}

.journal-header {
  background-color: var(--bg-secondary);
  padding: 0.75rem 1rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.journal-entry-row {
  padding: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.journal-entry-row:last-child {
  border-bottom: none;
}

.journal-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.journal-state {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
}

.journal-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 0.5rem;
}

.journal-desc span {
  font-weight: 600;
  color: var(--text-primary);
}

/* Checklist / Report Grid */
.report-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.report-row:last-child {
  border-bottom: none;
}

.report-label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.report-value {
  font-size: 0.75rem;
  color: var(--text-primary);
}

.report-value code {
  background-color: var(--bg-secondary);
  padding: 0.15rem 0.35rem;
  border: 1px solid var(--border-primary);
}

.report-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.metric-cell {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  padding: 1rem;
  text-align: center;
}

.metric-val {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.75rem;
  color: var(--text-primary);
}

.metric-lbl {
  font-size: 0.5625rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Alert panel */
.alert-panel {
  padding: 1rem;
  border: 1px solid var(--border-primary);
  font-size: 0.75rem;
  display: flex;
  gap: 0.75rem;
  align-items: start;
}

.alert-panel-warning {
  border-color: rgba(239, 68, 68, 0.2);
  background-color: rgba(239, 68, 68, 0.03);
}

.alert-panel-warning .alert-icon {
  color: var(--brand-red);
  font-size: 1.15rem;
  font-weight: bold;
}

.alert-panel-title {
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--brand-red);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Diff Blocks */
.diff-block {
  font-family: 'JetBrains Mono', monospace;
  background-color: #1A1A1A;
  color: #EDE8E2;
  font-size: 0.6875rem;
  line-height: 1.5;
  padding: 1rem;
  overflow-x: auto;
  border: 1px solid var(--border-primary);
}

.diff-line {
  white-space: pre;
}

.diff-line.addition {
  background-color: rgba(16, 185, 129, 0.15);
  color: #34D399;
}

.diff-line.deletion {
  background-color: rgba(239, 68, 68, 0.15);
  color: #F87171;
}

.diff-line.meta {
  color: #A6A29E;
  opacity: 0.5;
}

/* Validation checklist status */
.validation-checklist {
  list-style: none;
}

.validation-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.validation-item:last-child {
  border-bottom: none;
}

.validation-label-wrapper {
  display: flex;
  flex-direction: column;
}

.validation-item-name {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.validation-item-sub {
  font-size: 0.6875rem;
  color: var(--text-muted);
}

/* Footer styling */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-primary);
  padding: 3rem 0;
  margin-top: 5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
  }
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-link:hover {
  color: var(--text-primary);
}

/* Micro-animations */
@keyframes pulse-slow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.animate-pulse-slow {
  animation: pulse-slow 3s infinite ease-in-out;
}

/* Interactive elements */
.log-filter-box {
  margin-bottom: 1rem;
}

.log-filter-input {
  width: 100%;
  padding: 0.5rem 1rem;
  background-color: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-size: 0.75rem;
}

.log-filter-input:focus {
  border-color: var(--brand-red);
  outline: none;
}

.collapse-trigger {
  cursor: pointer;
}

.collapse-trigger:hover {
  background-color: var(--surface-hover);
}

.hidden-element {
  display: none !important;
}

.flex-center {
  display: flex;
  align-items: center;
}

.chevron-icon {
  transition: transform 0.3s ease;
}

.timeline-card.expanded .chevron-icon {
  transform: rotate(180deg);
}