/*
Theme Name: Future Pulse
Theme URI: https://github.com/future-pulse
Author: Mann
Author URI: https://openclaw.ai
Description: 面向未来的热点新闻时间线主题 - 以当下为锚点，向未来延伸，追溯历史
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: future-pulse
Tags: timeline, news, futuristic, one-column, custom-post-types
*/

/* ========================================
   CSS Variables - 主题色彩系统
======================================== */
:root {
  /* 主色调 */
  --primary-start: #6366f1;
  --primary-end: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-orange: #f59e0b;
  
  /* 状态色 */
  --confirmed: #10b981;
  --predicted: #f59e0b;
  --ongoing: #3b82f6;
  
  /* 分类色 */
  --cat-policy: #ef4444;
  --cat-civil: #10b981;
  --cat-hotspot: #f59e0b;
  --cat-official: #3b82f6;
  
  /* 背景 */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: rgba(30, 41, 59, 0.8);
  
  /* 文字 */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  /* 玻璃效果 */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  
  /* 间距 */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* 圆角 */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  
  /* 阴影 */
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
  --shadow-card: 0 4px 30px rgba(0, 0, 0, 0.3);
  
  /* 动画 */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
}

/* ========================================
   Reset & Base
======================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* 背景网格效果 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: -1;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--text-primary);
}

img {
  max-width: 100%;
  height: auto;
}

/* ========================================
   Typography
======================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

/* ========================================
   Header
======================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--spacing-md) var(--spacing-xl);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-start), var(--primary-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.site-logo::before {
  content: '⚡';
  -webkit-text-fill-color: initial;
  font-size: 1.75rem;
}

.main-nav ul {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.main-nav a {
  color: var(--text-secondary);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.main-nav a:hover,
.main-nav .current-menu-item a {
  color: var(--text-primary);
  background: var(--glass-bg);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* ========================================
   Buttons
======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-start), var(--primary-end));
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--primary-start);
}

.btn-icon {
  padding: var(--spacing-sm);
  border-radius: 50%;
}

/* ========================================
   Main Content
======================================== */
.site-main {
  padding-top: 80px;
  min-height: 100vh;
}

/* ========================================
   Timeline Section
======================================== */
.timeline-section {
  position: relative;
  padding: var(--spacing-2xl) 0;
  min-height: calc(100vh - 80px);
  display: flex;
  flex-direction: column;
}

/* Filter Bar */
.filter-bar {
  padding: var(--spacing-lg) var(--spacing-xl);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--glass-border);
}

.filter-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.filter-categories {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.filter-btn[data-category="policy"].active { border-color: var(--cat-policy); color: var(--cat-policy); }
.filter-btn[data-category="civil"].active { border-color: var(--cat-civil); color: var(--cat-civil); }
.filter-btn[data-category="hotspot"].active { border-color: var(--cat-hotspot); color: var(--cat-hotspot); }
.filter-btn[data-category="official"].active { border-color: var(--cat-official); color: var(--cat-official); }

.filter-time {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.filter-time input {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  font-size: 0.875rem;
}

.filter-time input:focus {
  outline: none;
  border-color: var(--primary-start);
}

/* Timeline Container */
.timeline-container {
  flex: 1;
  position: relative;
  overflow-x: auto;
  overflow-y: visible;
  padding: var(--spacing-2xl) 0;
  cursor: grab;
  scrollbar-width: thin;
  scrollbar-color: var(--primary-start) var(--bg-secondary);
}

.timeline-container::-webkit-scrollbar {
  height: 8px;
}

.timeline-container::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

.timeline-container::-webkit-scrollbar-thumb {
  background: linear-gradient(90deg, var(--primary-start), var(--primary-end));
  border-radius: 4px;
}

.timeline-container:active {
  cursor: grabbing;
}

/* Timeline Track */
.timeline-track {
  position: relative;
  min-width: 3000px;
  padding: 0 100px;
}

/* Center Line */
.timeline-line {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, 
    transparent,
    var(--primary-start) 10%,
    var(--primary-end) 90%,
    transparent
  );
  transform: translateY(-50%);
}

.timeline-line::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: inherit;
  filter: blur(10px);
  opacity: 0.5;
}

/* Now Marker */
.now-marker {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.now-marker::before {
  content: '';
  width: 24px;
  height: 24px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--primary-start));
  border-radius: 50%;
  box-shadow: 0 0 20px var(--accent-cyan), 0 0 40px rgba(6, 182, 212, 0.3);
  animation: pulse 2s ease-in-out infinite;
}

.now-marker::after {
  content: '当下';
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--accent-cyan);
  color: var(--bg-primary);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0.8; }
}

/* Timeline Events Container */
.timeline-events {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 500px;
}

/* ========================================
   Timeline Event Card
======================================== */
.event-card {
  position: absolute;
  width: 300px;
  transform: translateX(-50%);
  transition: all var(--transition-base);
}

.event-card.above {
  bottom: calc(50% + 40px);
}

.event-card.below {
  top: calc(50% + 40px);
}

/* Event Node */
.event-node {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary-start);
  border: 3px solid var(--bg-primary);
  box-shadow: var(--shadow-glow);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.event-card.above .event-node {
  bottom: -28px;
}

.event-card.below .event-node {
  top: -28px;
}

.event-node:hover {
  transform: translateX(-50%) scale(1.3);
}

/* Node colors by category */
.event-card[data-category="policy"] .event-node { background: var(--cat-policy); box-shadow: 0 0 15px var(--cat-policy); }
.event-card[data-category="civil"] .event-node { background: var(--cat-civil); box-shadow: 0 0 15px var(--cat-civil); }
.event-card[data-category="hotspot"] .event-node { background: var(--cat-hotspot); box-shadow: 0 0 15px var(--cat-hotspot); }
.event-card[data-category="official"] .event-node { background: var(--cat-official); box-shadow: 0 0 15px var(--cat-official); }

/* Connection Line */
.event-connector {
  position: absolute;
  left: 50%;
  width: 2px;
  background: linear-gradient(to bottom, var(--glass-border), transparent);
  transform: translateX(-50%);
}

.event-card.above .event-connector {
  bottom: -10px;
  height: 20px;
}

.event-card.below .event-connector {
  top: -10px;
  height: 20px;
}

/* Card Content */
.event-content {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
}

.event-card:hover .event-content {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card), 0 0 30px rgba(99, 102, 241, 0.2);
  border-color: var(--primary-start);
}

/* Predicted Event Style */
.event-card[data-status="predicted"] .event-content {
  border-style: dashed;
  opacity: 0.9;
}

.event-card[data-status="predicted"] .event-node {
  animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Ongoing Event Style */
.event-card[data-status="ongoing"] .event-node {
  animation: ongoing-pulse 1.5s ease-in-out infinite;
}

@keyframes ongoing-pulse {
  0%, 100% { box-shadow: 0 0 15px var(--ongoing); }
  50% { box-shadow: 0 0 25px var(--ongoing), 0 0 40px rgba(59, 130, 246, 0.3); }
}

/* Event Meta */
.event-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  font-size: 0.75rem;
}

.event-date {
  color: var(--text-muted);
}

.event-status {
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.625rem;
  letter-spacing: 0.05em;
}

.event-status.confirmed { background: rgba(16, 185, 129, 0.2); color: var(--confirmed); }
.event-status.predicted { background: rgba(245, 158, 11, 0.2); color: var(--predicted); }
.event-status.ongoing { background: rgba(59, 130, 246, 0.2); color: var(--ongoing); }

.event-category {
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.625rem;
}

.event-category.policy { background: rgba(239, 68, 68, 0.2); color: var(--cat-policy); }
.event-category.civil { background: rgba(16, 185, 129, 0.2); color: var(--cat-civil); }
.event-category.hotspot { background: rgba(245, 158, 11, 0.2); color: var(--cat-hotspot); }
.event-category.official { background: rgba(59, 130, 246, 0.2); color: var(--cat-official); }

/* Event Title */
.event-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
  line-height: 1.4;
}

.event-title a {
  color: inherit;
}

.event-title a:hover {
  color: var(--accent-cyan);
}

/* Event Excerpt */
.event-excerpt {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

/* Event Image */
.event-image {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--spacing-md);
}

.event-image img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.event-card:hover .event-image img {
  transform: scale(1.05);
}

/* Event Footer */
.event-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--glass-border);
}

.event-importance {
  display: flex;
  gap: 2px;
}

.event-importance .star {
  color: var(--cat-hotspot);
  font-size: 0.75rem;
}

.event-importance .star.empty {
  opacity: 0.3;
}

.event-link {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.event-link:hover {
  color: var(--accent-cyan);
}

/* ========================================
   Timeline Navigation
======================================== */
.timeline-nav {
  position: fixed;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-xl);
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  z-index: 100;
}

.timeline-nav-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.timeline-nav-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border-color: var(--primary-start);
}

.timeline-zoom {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.timeline-zoom input[type="range"] {
  width: 100px;
  -webkit-appearance: none;
  background: var(--glass-border);
  border-radius: 4px;
  height: 4px;
}

.timeline-zoom input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  background: linear-gradient(135deg, var(--primary-start), var(--primary-end));
  border-radius: 50%;
  cursor: pointer;
}

.jump-to-now {
  background: linear-gradient(135deg, var(--accent-cyan), var(--primary-start));
  border: none;
  color: white;
  font-weight: 600;
  font-size: 0.875rem;
}

.jump-to-now:hover {
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.5);
}

/* ========================================
   Single Event Page
======================================== */
.single-event {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--spacing-2xl);
}

.event-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.event-header .event-meta {
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.event-header .event-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.event-featured-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: var(--spacing-2xl);
}

.event-featured-image img {
  width: 100%;
  height: auto;
}

.event-body {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.event-body p {
  margin-bottom: var(--spacing-lg);
}

.event-body h2 {
  color: var(--text-primary);
  margin-top: var(--spacing-xl);
}

/* ========================================
   Comments Section
======================================== */
.comments-section {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--glass-border);
}

.comments-title {
  margin-bottom: var(--spacing-lg);
}

.comment-list {
  list-style: none;
}

.comment {
  padding: var(--spacing-lg);
  background: var(--glass-bg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
}

.comment-author {
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.comment-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-sm);
}

.comment-content {
  color: var(--text-secondary);
}

.comment-respond {
  margin-top: var(--spacing-xl);
}

.comment-form label {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form textarea {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
  margin-bottom: var(--spacing-md);
}

.comment-form input:focus,
.comment-form textarea:focus {
  outline: none;
  border-color: var(--primary-start);
}

.comment-form textarea {
  min-height: 150px;
  resize: vertical;
}

/* ========================================
   Submit Event Form
======================================== */
.submit-event-page {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-2xl);
}

.submit-event-form {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-start);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

/* ========================================
   User Auth
======================================== */
.auth-page {
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
}

.auth-form {
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
}

.auth-form h2 {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.auth-form .form-group {
  margin-bottom: var(--spacing-md);
}

.auth-form .btn {
  width: 100%;
  justify-content: center;
  margin-top: var(--spacing-lg);
}

.auth-links {
  text-align: center;
  margin-top: var(--spacing-lg);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.auth-links a {
  color: var(--accent-cyan);
}

/* ========================================
   History Panel (Sidebar)
======================================== */
.history-panel {
  position: fixed;
  top: 80px;
  right: -400px;
  width: 400px;
  height: calc(100vh - 80px);
  background: var(--bg-secondary);
  border-left: 1px solid var(--glass-border);
  padding: var(--spacing-xl);
  overflow-y: auto;
  transition: right var(--transition-base);
  z-index: 100;
}

.history-panel.open {
  right: 0;
}

.history-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}

.history-panel-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

.history-item {
  padding: var(--spacing-md);
  background: var(--glass-bg);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.history-item:hover {
  background: rgba(255, 255, 255, 0.1);
}

.history-item .event-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.history-item .event-title {
  font-size: 0.875rem;
  margin-bottom: 0;
}

/* ========================================
   Footer
======================================== */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--glass-border);
  padding: var(--spacing-2xl) var(--spacing-xl);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ========================================
   Responsive Design
======================================== */
@media (max-width: 1024px) {
  .filter-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .timeline-nav {
    bottom: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    gap: var(--spacing-md);
  }
  
  .main-nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
  }
  
  .main-nav ul {
    flex-wrap: nowrap;
  }
  
  .event-card {
    width: 250px;
  }
  
  .timeline-track {
    min-width: 2000px;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .history-panel {
    width: 100%;
    right: -100%;
  }
}

@media (max-width: 480px) {
  :root {
    font-size: 14px;
  }
  
  .site-header {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .site-logo {
    font-size: 1.25rem;
  }
  
  .filter-bar {
    padding: var(--spacing-md);
  }
  
  .timeline-nav {
    width: calc(100% - 32px);
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .event-card {
    width: 200px;
  }
}

/* ========================================
   Animations
======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.event-card {
  animation: fadeInUp 0.5s ease forwards;
}

/* Stagger animation for cards */
.event-card:nth-child(1) { animation-delay: 0.1s; }
.event-card:nth-child(2) { animation-delay: 0.2s; }
.event-card:nth-child(3) { animation-delay: 0.3s; }
.event-card:nth-child(4) { animation-delay: 0.4s; }
.event-card:nth-child(5) { animation-delay: 0.5s; }
.event-card:nth-child(6) { animation-delay: 0.6s; }

/* ========================================
   Utility Classes
======================================== */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-lg); }
.mt-3 { margin-top: var(--spacing-xl); }
.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-lg); }
.mb-3 { margin-bottom: var(--spacing-xl); }

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}