/* ========================================
   🌸 Anime Sakura Theme - Glassmorphism
   ======================================== */

:root {
  /* Colors */
  --primary: #f472b6;
  --primary-dark: #db2777;
  --secondary: #a78bfa;
  --accent: #22d3ee;
  
  /* Background */
  --bg: #fef3f3;
  --bg-gradient: linear-gradient(135deg, #fef3f3 0%, #ede9fe 50%, #dbeafe 100%);
  
  /* Surface - Glass */
  --surface: rgba(255, 255, 255, 0.75);
  --surface-hover: rgba(255, 255, 255, 0.9);
  --surface-dark: rgba(30, 41, 59, 0.8);
  
  /* Text */
  --text: #374151;
  --text-muted: #6b7280;
  --text-light: #9ca3af;
  
  /* Border & Shadow */
  --border: rgba(255, 255, 255, 0.5);
  --border-dark: rgba(255, 255, 255, 0.1);
  --shadow: rgba(244, 114, 182, 0.15);
  --shadow-lg: rgba(244, 114, 182, 0.25);
  
  /* Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  
  /* Glass Effect */
  --glass-blur: 20px;
  --glass-saturate: 180%;
}

/* Dark Mode */
[data-theme="dark"],
.dark-mode {
  --bg: #1a1a2e;
  --bg-gradient: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f172a 100%);
  --surface: rgba(30, 41, 59, 0.8);
  --surface-hover: rgba(51, 65, 85, 0.9);
  --text: #f3f4f6;
  --text-muted: #9ca3af;
  --border: rgba(255, 255, 255, 0.1);
  --shadow: rgba(0, 0, 0, 0.3);
}

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

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

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg-gradient);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Particle Canvas */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* ========================================
   Navigation - Glass Pill
   ======================================== */
.nav-glass {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 12px 32px;
  
  background: var(--surface);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  box-shadow: 0 8px 32px var(--shadow);
  
  transition: all 0.3s ease;
}

.nav-glass:hover {
  background: var(--surface-hover);
  box-shadow: 0 12px 40px var(--shadow-lg);
}

.nav-brand {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

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

.nav-links {
  display: flex;
  gap: 8px;
}

.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-full);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: all 0.3s ease;
}

.nav-link:hover {
  background: rgba(244, 114, 182, 0.1);
  color: var(--primary);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: var(--surface);
  cursor: pointer;
  font-size: 1.2rem;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  transform: scale(1.1);
  background: var(--primary);
}

.theme-icon-dark { display: none; }
.dark-mode .theme-icon-light { display: none; }
.dark-mode .theme-icon-dark { display: block; }

/* ========================================
   Main Container
   ======================================== */
.main-container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 24px 80px;
  display: flex;
  gap: 32px;
}

.content-wrapper {
  flex: 1;
  min-width: 0;
}

/* ========================================
   Cards - Glass Effect
   ======================================== */
.card-glass {
  background: var(--surface);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: 0 8px 32px var(--shadow);
  transition: all 0.3s ease;
}

.card-glass:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px var(--shadow-lg);
}

/* ========================================
   Post Cards
   ======================================== */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.post-card {
  background: var(--surface);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 32px var(--shadow);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.post-card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 20px 60px var(--shadow-lg);
}

.post-card-cover {
  height: 180px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  position: relative;
  overflow: hidden;
}

.post-card-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.1) 100%);
}

.post-card-body {
  padding: 24px;
}

.post-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}

.post-card-title a {
  color: var(--text);
  text-decoration: none;
}

.post-card-title a:hover {
  color: var(--primary);
}

.post-card-meta {
  display: flex;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 12px;
}

.post-card-excerpt {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}

/* ========================================
   Tags
   ======================================== */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background: rgba(244, 114, 182, 0.1);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  text-decoration: none;
  transition: all 0.3s;
}

.tag:hover {
  background: var(--primary);
  color: white;
  transform: scale(1.05);
}

/* ========================================
   Single Post
   ======================================== */
.post-header {
  text-align: center;
  padding: 48px 0;
}

.post-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.post-meta {
  display: flex;
  justify-content: center;
  gap: 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.post-content {
  background: var(--surface);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 48px;
  box-shadow: 0 8px 32px var(--shadow);
}

/* Typography in post */
.post-content h2 {
  font-size: 1.75rem;
  margin: 48px 0 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
}

.post-content h3 {
  font-size: 1.4rem;
  margin: 32px 0 16px;
  color: var(--primary);
}

.post-content p {
  margin-bottom: 20px;
}

.post-content a {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}

.post-content a:hover {
  border-bottom-color: var(--primary);
}

.post-content img {
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px var(--shadow);
}

.post-content blockquote {
  border-left: 4px solid var(--primary);
  margin: 24px 0;
  padding: 16px 24px;
  background: rgba(244, 114, 182, 0.05);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
}

.post-content code {
  background: rgba(244, 114, 182, 0.1);
  color: var(--primary-dark);
  padding: 2px 8px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9em;
}

.post-content pre {
  background: var(--surface-dark);
  padding: 24px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 24px 0;
}

.post-content pre code {
  background: none;
  color: var(--text);
  padding: 0;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.post-content th,
.post-content td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.post-content th {
  background: rgba(244, 114, 182, 0.1);
  font-weight: 600;
}

/* Post Navigation */
.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.post-nav-item {
  flex: 1;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all 0.3s;
}

.post-nav-item:hover {
  transform: translateX(4px);
  border-color: var(--primary);
}

.post-nav-item.prev:hover {
  transform: translateX(-4px);
}

.post-nav-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.post-nav-title {
  font-weight: 600;
  color: var(--text);
}

/* ========================================
   TOC - Glass Sidebar
   ======================================== */
.toc-glass {
  position: sticky;
  top: 120px;
  width: 240px;
  padding: 24px;
  background: var(--surface);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px var(--shadow);
  height: fit-content;
}

.toc-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

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

.toc-item {
  margin: 8px 0;
}

.toc-item a {
  display: block;
  padding: 6px 12px;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  transition: all 0.3s;
}

.toc-item a:hover {
  background: rgba(244, 114, 182, 0.1);
  color: var(--primary);
}

.toc-item.active a {
  background: var(--primary);
  color: white;
}

/* ========================================
   Pagination
   ======================================== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 48px;
}

.page-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text);
  text-decoration: none;
  transition: all 0.3s;
}

.page-link:hover {
  background: var(--primary);
  color: white;
  transform: scale(1.1);
}

.page-link.active {
  background: var(--primary);
  color: white;
}

/* ========================================
   Friends Page
   ======================================== */
.friends-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.friend-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  background: var(--surface);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.friend-card:hover {
  transform: translateY(-8px) rotate(1deg);
  box-shadow: 0 20px 60px var(--shadow-lg);
  border-color: var(--primary);
}

.friend-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--primary);
  box-shadow: 0 4px 16px var(--shadow);
}

.friend-info {
  flex: 1;
}

.friend-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.friend-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.friend-group {
  display: inline-block;
  margin-top: 8px;
  padding: 2px 10px;
  background: rgba(167, 139, 250, 0.2);
  color: var(--secondary);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
}

/* ========================================
   Footer
   ======================================== */
.footer-glass {
  position: relative;
  z-index: 1;
  margin-top: 80px;
  padding: 48px 24px;
  background: var(--surface);
  backdrop-filter: blur(var(--glass-blur));
  border-top: 1px solid var(--border);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-content p {
  color: var(--text-muted);
  margin: 8px 0;
}

.footer-callsign {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.2rem;
  color: var(--primary) !important;
  font-weight: 600;
}

/* ========================================
   Back to Top
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 52px;
  height: 52px;
  background: var(--surface);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  box-shadow: 0 8px 32px var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-4px);
  box-shadow: 0 12px 40px var(--shadow-lg);
}

.back-to-top svg {
  width: 24px;
  height: 24px;
}

/* ========================================
   Loading Animation
   ======================================== */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.loading {
  background: linear-gradient(90deg, var(--surface) 25%, var(--surface-hover) 50%, var(--surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-lg);
}

/* ========================================
   Mobile Navigation
   ======================================== */
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.nav-mobile {
  display: none;
  position: fixed;
  top: 80px;
  left: 16px;
  right: 16px;
  background: var(--surface);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: 0 8px 32px var(--shadow-lg);
  z-index: 999;
  flex-direction: column;
  gap: 8px;
}

.nav-mobile.show {
  display: flex;
}

.nav-mobile .nav-link {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  color: var(--text);
  text-decoration: none;
  transition: all 0.3s;
}

.nav-mobile .nav-link:hover {
  background: rgba(244, 114, 182, 0.1);
  color: var(--primary);
}

/* ========================================
   QSO Log Styles - Professional Table & QSL Card
   ======================================== */

/* Log Page Header */
.logs-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.logs-title-section {
  flex: 1;
}

.logs-stats-section {
  text-align: center;
  padding: 16px 32px;
  background: var(--surface);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px var(--shadow);
}

.logs-stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}

.logs-stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Stats Container */
.logs-stats-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 24px;
  padding: 24px;
}

.logs-stats-block h4 {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.logs-stats-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(244, 114, 182, 0.1);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
}

.stat-pill-label {
  color: var(--text-muted);
}

.stat-pill-value {
  font-weight: 600;
  color: var(--primary);
}

/* Mode Colors */
.mode-ssb { background: rgba(34, 197, 94, 0.15); color: #16a34a; }
.mode-cw { background: rgba(239, 68, 68, 0.15); color: #dc2626; }
.mode-fm { background: rgba(59, 130, 246, 0.15); color: #2563eb; }
.mode-am { background: rgba(168, 85, 247, 0.15); color: #9333ea; }
.mode-digital { background: rgba(245, 158, 11, 0.15); color: #d97706; }
.mode-other { background: rgba(107, 114, 128, 0.15); color: #4b5563; }

/* Filter Bar */
.logs-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: flex-end;
  padding: 20px 24px;
  margin-bottom: 24px;
}

.logs-filter-bar .filter-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.logs-filter-bar .filter-group label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.logs-filter-bar .glass-input {
  min-width: 140px;
  padding: 10px 14px;
  font-size: 0.9rem;
}

/* Log Table */
.logs-table-container {
  overflow-x: auto;
  padding: 0;
  -webkit-overflow-scrolling: touch;
}

.logs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.logs-table thead {
  background: rgba(244, 114, 182, 0.05);
  position: sticky;
  top: 0;
  z-index: 10;
}

.logs-table th {
  padding: 16px 12px;
  text-align: left;
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
  border-bottom: 2px solid var(--border);
}

.logs-table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.log-table-row {
  cursor: pointer;
  transition: all 0.2s ease;
}

.log-table-row:hover {
  background: rgba(244, 114, 182, 0.05);
}

.log-table-row:hover td {
  color: var(--primary);
}

/* Table Column Widths */
.log-col-num { width: 40px; text-align: center; color: var(--text-light); }
.log-col-date { width: 100px; }
.log-col-time { width: 70px; }
.log-col-callsign { width: 120px; }
.log-col-band { width: 70px; }
.log-col-frequency { width: 100px; }
.log-col-mode { width: 80px; }
.log-col-rst { width: 70px; }
.log-col-qth { min-width: 120px; }
.log-col-rig { min-width: 100px; }

/* Callsign Badge */
.callsign-badge {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--primary);
  background: rgba(244, 114, 182, 0.1);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

/* Mode Tag */
.mode-tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
}

/* Empty State */
.logs-empty-state {
  text-align: center;
  padding: 60px 20px;
}

.logs-empty-state .empty-icon {
  font-size: 4rem;
  margin-bottom: 16px;
}

.logs-empty-state h3 {
  color: var(--text);
  margin-bottom: 8px;
}

.logs-empty-state p {
  color: var(--text-muted);
}

/* ========================================
   QSL Card Detail Page
   ======================================== */
.log-detail-page {
  max-width: 800px;
  margin: 0 auto;
}

/* QSL Card Header */
.qsl-card-header {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 32px;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}

.qsl-card-header::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  opacity: 0.1;
  border-radius: 50%;
  transform: translate(50%, -50%);
}

.qsl-card-stamp {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  box-shadow: 0 8px 24px var(--shadow-lg);
  position: relative;
  z-index: 1;
}

.qsl-card-title {
  flex: 1;
  position: relative;
  z-index: 1;
}

.qsl-card-title h1 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.qsl-card-subtitle {
  color: var(--text-muted);
  font-size: 1rem;
}

.qsl-card-badge {
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 600;
  position: relative;
  z-index: 1;
}

/* QSL Info Grid */
.qsl-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  padding: 24px;
  margin-bottom: 24px;
}

.qsl-info-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: rgba(244, 114, 182, 0.03);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.qsl-info-item:hover {
  background: rgba(244, 114, 182, 0.08);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.qsl-info-icon {
  font-size: 1.5rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border-radius: var(--radius-md);
}

.qsl-info-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.qsl-info-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.qsl-info-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
}

/* QSL Notes */
.qsl-notes {
  padding: 24px;
  margin-bottom: 24px;
}

.qsl-notes h3 {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.qsl-notes p {
  color: var(--text);
  line-height: 1.8;
  font-size: 1rem;
}

/* QSL Navigation */
.qsl-navigation {
  display: flex;
  justify-content: center;
  margin-top: 32px;
}

.qsl-navigation .glass-btn {
  padding: 12px 24px;
}

/* ========================================
   Responsive - Multi-device Adaptation
   ======================================== */

/* Large Desktop (>1600px) */
@media (min-width: 1600px) {
  .main-container {
    max-width: 1400px;
    padding: 140px 48px 100px;
  }
  
  .posts-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .friends-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .logs-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .post-content {
    padding: 64px;
  }
}

/* Desktop (1200px - 1600px) */
@media (max-width: 1600px) and (min-width: 1200px) {
  .posts-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .friends-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Tablet Landscape (1024px - 1200px) */
@media (max-width: 1200px) {
  .posts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .friends-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .logs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Tablet Portrait (768px - 1024px) */
@media (max-width: 1024px) {
  .toc-glass {
    display: none;
  }
  
  .main-container {
    padding-top: 100px;
    padding-left: 20px;
    padding-right: 20px;
  }
  
  .nav-glass {
    padding: 12px 24px;
    gap: 20px;
  }
  
  .post-title {
    font-size: 2rem;
  }
  
  .post-content {
    padding: 36px;
  }
}

/* Mobile (< 768px) */
@media (max-width: 768px) {
  .nav-glass {
    left: 12px;
    right: 12px;
    top: 12px;
    transform: none;
    padding: 10px 16px;
    gap: 8px;
    justify-content: space-between;
    border-radius: 20px;
  }
  
  .nav-links {
    display: none;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-brand {
    font-size: 1rem;
  }
  
  .main-container {
    padding: 90px 12px 48px;
  }
  
  .post-header {
    padding: 32px 0;
  }
  
  .post-title {
    font-size: 1.5rem;
  }
  
  .post-content {
    padding: 20px;
    border-radius: var(--radius-lg);
  }
  
  .post-content h2 {
    font-size: 1.4rem;
    margin: 32px 0 16px;
  }
  
  .post-content h3 {
    font-size: 1.2rem;
  }
  
  .posts-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .friends-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .logs-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .post-card-cover {
    height: 160px;
  }
  
  .post-card-body {
    padding: 20px;
  }
  
  /* Mobile Log Styles */
  .logs-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  
  .logs-stats-section {
    padding: 12px 24px;
    width: 100%;
  }
  
  .logs-stat-number {
    font-size: 2rem;
  }
  
  .logs-stats-container {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 16px;
  }
  
  .logs-filter-bar {
    padding: 16px;
  }
  
  .logs-filter-bar .filter-group {
    flex: 1;
    min-width: calc(50% - 8px);
  }
  
  .logs-filter-bar .glass-input {
    min-width: 100%;
    width: 100%;
  }
  
  /* Hide some columns on mobile */
  .log-col-time,
  .log-col-frequency,
  .log-col-rig {
    display: none;
  }
  
  .logs-table th,
  .logs-table td {
    padding: 12px 8px;
    font-size: 0.85rem;
  }
  
  .callsign-badge {
    font-size: 0.85rem;
    padding: 3px 8px;
  }
  
  .mode-tag {
    padding: 3px 8px;
    font-size: 0.75rem;
  }
  
  /* QSL Card Mobile */
  .qsl-card-header {
    flex-direction: column;
    text-align: center;
    padding: 24px;
    gap: 16px;
  }
  
  .qsl-card-stamp {
    width: 60px;
    height: 60px;
    font-size: 1.2rem;
  }
  
  .qsl-card-title h1 {
    font-size: 1.75rem;
  }
  
  .qsl-info-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 16px;
  }
  
  .qsl-info-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 12px;
  }
  
  .qsl-info-icon {
    width: 36px;
    height: 36px;
    font-size: 1.2rem;
  }
  
  .qsl-info-value {
    font-size: 0.9rem;
  }
  
  .log-detail-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  .post-nav {
    flex-direction: column;
    gap: 12px;
    margin-top: 32px;
  }
  
  .post-nav-item {
    padding: 16px;
  }
  
  .post-meta {
    flex-direction: column;
    gap: 8px;
    font-size: 0.875rem;
  }
  
  .log-detail-meta {
    flex-direction: column;
    gap: 8px;
  }
  
  .pagination {
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 32px;
  }
  
  .page-link {
    width: 40px;
    height: 40px;
  }
  
  .toc-glass {
    display: none;
  }
  
  .back-to-top {
    width: 44px;
    height: 44px;
    bottom: 20px;
    right: 20px;
  }
  
  .footer-glass {
    margin-top: 48px;
    padding: 32px 16px;
  }
}

/* Small Mobile (< 480px) */
@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .nav-glass {
    top: 8px;
    left: 8px;
    right: 8px;
    padding: 8px 12px;
    border-radius: 16px;
  }
  
  .nav-brand {
    font-size: 0.9rem;
  }
  
  .main-container {
    padding: 80px 10px 40px;
  }
  
  .page-header {
    padding: 24px 0;
  }
  
  .site-title {
    font-size: 1.5rem;
  }
  
  .post-title {
    font-size: 1.35rem;
  }
  
  .post-content {
    padding: 16px;
  }
  
  .post-content pre {
    padding: 16px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .card-glass {
    padding: 16px;
  }
  
  .post-card-cover {
    height: 140px;
  }
  
  .post-card-body {
    padding: 16px;
  }
  
  .post-card-title {
    font-size: 1.1rem;
  }
  
  .log-card {
    padding: 16px;
  }
  
  .log-callsign {
    font-size: 1.2rem;
  }
  
  .log-detail-callsign {
    font-size: 1.5rem;
  }
  
  .log-detail-content {
    padding: 16px;
  }
  
  .tags-section {
    padding: 20px;
  }
  
  .back-to-top {
    width: 40px;
    height: 40px;
    bottom: 16px;
    right: 16px;
  }
  
  .theme-toggle {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
  .nav-glass,
  .toc-glass,
  .back-to-top,
  #particle-canvas {
    display: none !important;
  }
  
  body {
    background: white !important;
  }
  
  .post-content {
    box-shadow: none !important;
    border: none !important;
  }
}