/*!
 * Teknik Servis Yönetim Sistemi - Ana CSS
 * Modern, kurumsal, premium tasarım
 */

/* ========================================
   IMPORTS & ROOT VARIABLES
   ======================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --secondary: #7c3aed;
  --secondary-dark: #6d28d9;
  --accent: #0ea5e9;
  
  --bg-base: #0f172a;
  --bg-card: #1e293b;
  --bg-card-hover: #243044;
  --bg-input: #0f172a;
  --bg-sidebar: #111827;
  
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --border: #1e293b;
  --border-light: #334155;
  
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.5);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 30px rgba(37,99,235,0.3);
  
  --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
  --transition-slow: 0.4s cubic-bezier(0.4,0,0.2,1);
  
  --sidebar-width: 260px;
  --header-height: 70px;
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }

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

button, input, textarea, select { font-family: inherit; }

/* ========================================
   SCROLLBAR
   ======================================== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ========================================
   PUBLIC SITE LAYOUT
   ======================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15,23,42,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  padding: 0 24px;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  margin-left: 30px;
}

.site-logo img {
  height: 45px;
  width: auto;
  object-fit: contain;
}

.site-logo-text {
  display: flex;
  flex-direction: column;
}

.site-logo-text .brand {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  line-height: 1.1;
}

.site-logo-text .tagline {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  transition: all var(--transition);
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--text-primary);
  background: var(--bg-card);
}

.site-main {
  min-height: calc(100vh - var(--header-height));
}

.site-footer {
  background: var(--bg-sidebar);
  border-top: 1px solid var(--border-light);
  padding: 40px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}

.site-footer .footer-logo {
  height: 40px;
  width: auto;
  margin: 0 auto 16px;
  opacity: 0.7;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
  position: relative;
  padding: 80px 24px;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(37,99,235,0.3) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(124,58,237,0.2) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(37,99,235,0.15);
  border: 1px solid rgba(37,99,235,0.3);
  color: var(--primary-light);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -2px;
  line-height: 1.1;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ========================================
   TRACK FORM (ANA SAYFA)
   ======================================== */
.track-section {
  padding: 60px 24px;
  max-width: 700px;
  margin: 0 auto;
}

.track-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 48px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.track-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
}

.track-card h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
}

.track-card p {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.track-input-group {
  display: flex;
  gap: 12px;
}

.track-input-group input {
  flex: 1;
  background: var(--bg-input);
  border: 1.5px solid var(--border-light);
  color: var(--text-primary);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.track-input-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.2);
}

.track-input-group input::placeholder {
  color: var(--text-muted);
  letter-spacing: 1px;
  font-size: 14px;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--transition);
}

.btn:hover::before {
  background: rgba(255,255,255,0.08);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 4px 20px rgba(37,99,235,0.4);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 30px rgba(37,99,235,0.5);
}

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

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

.btn-success {
  background: linear-gradient(135deg, #059669, #10b981);
  color: #fff;
}

.btn-danger {
  background: linear-gradient(135deg, #dc2626, #ef4444);
  color: #fff;
}

.btn-warning {
  background: linear-gradient(135deg, #d97706, #f59e0b);
  color: #fff;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 18px 40px;
  font-size: 17px;
  border-radius: var(--radius-lg);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-sm);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ========================================
   FORMS
   ======================================== */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.3px;
}

.form-label .required {
  color: var(--error);
  margin-left: 4px;
}

.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1.5px solid var(--border-light);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 15px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}

.form-control::placeholder { color: var(--text-muted); }

.form-control:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 44px;
  cursor: pointer;
}

.form-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
}

.form-error {
  font-size: 12px;
  color: var(--error);
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-row.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

/* ========================================
   FILE UPLOAD
   ======================================== */
.file-upload-area {
  border: 2px dashed var(--border-light);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.file-upload-area:hover,
.file-upload-area.drag-over {
  border-color: var(--primary);
  background: rgba(37,99,235,0.05);
}

.file-upload-area input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.file-upload-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.file-upload-text {
  color: var(--text-secondary);
  font-size: 15px;
}

.file-upload-text strong {
  color: var(--primary-light);
}

.file-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.file-preview-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 1;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
}

.file-preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.file-preview-remove {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 24px;
  height: 24px;
  background: rgba(239,68,68,0.9);
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition);
}

.file-preview-remove:hover { transform: scale(1.1); }

/* ========================================
   CARDS
   ======================================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

.card:hover {
  border-color: rgba(37,99,235,0.3);
  box-shadow: var(--shadow-md);
}

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 17px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-body {
  padding: 24px;
}

.card-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-light);
  background: rgba(0,0,0,0.2);
}

/* ========================================
   STATUS BADGES
   ======================================== */
.status-badge,
.payment-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.3px;
  white-space: nowrap;
}

/* ========================================
   ALERTS
   ======================================== */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.alert-success { background: rgba(16,185,129,0.15); border: 1px solid rgba(16,185,129,0.3); color: #34d399; }
.alert-error   { background: rgba(239,68,68,0.15);  border: 1px solid rgba(239,68,68,0.3);  color: #f87171; }
.alert-warning { background: rgba(245,158,11,0.15); border: 1px solid rgba(245,158,11,0.3); color: #fbbf24; }
.alert-info    { background: rgba(59,130,246,0.15); border: 1px solid rgba(59,130,246,0.3); color: #60a5fa; }

.alert-icon { font-size: 18px; flex-shrink: 0; }

/* ========================================
   TABLES
   ======================================== */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table thead {
  background: var(--bg-sidebar);
}

.data-table th {
  padding: 14px 16px;
  text-align: left;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.7px;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-light);
  white-space: nowrap;
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(30,41,59,0.5);
  vertical-align: middle;
}

.data-table tbody tr {
  transition: background var(--transition);
}

.data-table tbody tr:hover {
  background: rgba(37,99,235,0.05);
}

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

/* ========================================
   STAT CARDS
   ======================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  border-radius: 3px 0 0 3px;
}

.stat-card.primary::before   { background: var(--primary); }
.stat-card.success::before   { background: var(--success); }
.stat-card.warning::before   { background: var(--warning); }
.stat-card.secondary::before { background: var(--secondary); }
.stat-card.info::before      { background: var(--info); }

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(37,99,235,0.3);
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.stat-card.primary .stat-icon   { background: rgba(37,99,235,0.15); }
.stat-card.success .stat-icon   { background: rgba(16,185,129,0.15); }
.stat-card.warning .stat-icon   { background: rgba(245,158,11,0.15); }
.stat-card.secondary .stat-icon { background: rgba(124,58,237,0.15); }
.stat-card.info .stat-icon      { background: rgba(14,165,233,0.15); }

.stat-info {}

.stat-value {
  font-size: 32px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -1px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ========================================
   TIMELINE / NOTES
   ======================================== */
.timeline {
  position: relative;
  padding-left: 24px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), transparent);
}

.timeline-item {
  position: relative;
  padding: 16px 0 16px 24px;
  border-bottom: 1px solid rgba(30,41,59,0.4);
}

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

.timeline-dot {
  position: absolute;
  left: -24px;
  top: 22px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid var(--bg-card);
  box-shadow: 0 0 0 2px var(--primary);
}

.timeline-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.timeline-author {
  font-weight: 600;
  color: var(--text-secondary);
}

.timeline-content {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
}

.timeline-type-badge {
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
}

/* ========================================
   PAGINATION
   ======================================== */
.pagination {
  display: flex;
  align-items: center;
  gap: 6px;
  justify-content: center;
  padding: 20px 0;
  flex-wrap: wrap;
}

.page-btn {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
}

.page-btn:hover {
  color: var(--text-primary);
  border-color: var(--primary);
  background: rgba(37,99,235,0.1);
}

.page-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ========================================
   MODAL
   ======================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px) scale(0.98);
  transition: transform var(--transition);
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

.modal-header {
  padding: 24px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
}

.modal-close {
  width: 36px;
  height: 36px;
  border: none;
  background: var(--bg-input);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.modal-close:hover {
  background: rgba(239,68,68,0.2);
  color: var(--error);
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* ========================================
   LOGIN PAGE
   ======================================== */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--bg-base);
  position: relative;
  overflow: hidden;
}

.login-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 60% 50% at 30% 30%, rgba(37,99,235,0.2) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 70% 70%, rgba(124,58,237,0.2) 0%, transparent 60%);
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  width: 100%;
  max-width: 440px;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo img {
  height: 60px;
  width: auto;
  margin: 0 auto 16px;
}

.login-logo h1 {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.login-logo p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 6px;
}

/* ========================================
   TRACK RESULT (MÜŞTERİ SONUÇ SAYFASI)
   ======================================== */
.track-result {
  max-width: 800px;
  margin: 40px auto;
  padding: 0 24px;
}

.track-result-header {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 32px;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
}

.track-result-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.tracking-number-display {
  font-family: 'JetBrains Mono', monospace;
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-light);
  letter-spacing: 3px;
  margin-bottom: 8px;
}

.device-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.device-info-item {
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 16px;
}

.device-info-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.7px;
  margin-bottom: 6px;
}

.device-info-value {
  font-size: 15px;
  font-weight: 600;
}

/* ========================================
   IMAGE GALLERY
   ======================================== */
.image-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}

.image-gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 1;
  border: 1px solid var(--border-light);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.image-gallery-item:hover {
  border-color: var(--primary);
  transform: scale(1.02);
}

.image-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ========================================
   CONTAINER
   ======================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.page-content {
  padding: 40px 0;
}

/* ========================================
   SECTION HEADERS
   ======================================== */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.section-title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 4px;
}

/* ========================================
   LIGHTBOX
   ======================================== */
#lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

#lightbox.active {
  opacity: 1;
  pointer-events: all;
}

#lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

#lightbox-close {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.1);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ========================================
   LOADER
   ======================================== */
.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid rgba(255,255,255,0.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========================================
   FEATURES SECTION
   ======================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding: 60px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: rgba(37,99,235,0.4);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  font-size: 36px;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
}

/* ========================================
   SEARCH BAR
   ======================================== */
.search-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-card);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 0 16px;
  transition: border-color var(--transition);
}

.search-bar:focus-within {
  border-color: var(--primary);
}

.search-bar input {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 14px;
  padding: 12px 0;
  flex: 1;
  outline: none;
}

.search-bar input::placeholder {
  color: var(--text-muted);
}

.search-icon {
  color: var(--text-muted);
  font-size: 18px;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
  .form-row { grid-template-columns: 1fr; }
  .form-row.cols-3 { grid-template-columns: 1fr; }
  .track-input-group { flex-direction: column; }
  .track-card { padding: 28px 20px; }
  .login-card { padding: 32px 24px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 2rem; letter-spacing: -1px; }
  .hero { padding: 50px 24px; }
  .file-preview-grid { grid-template-columns: repeat(2, 1fr); }
  .site-nav { display: none; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .device-info { grid-template-columns: 1fr; }
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.fade-in { animation: fadeIn 0.4s ease forwards; }

.animate-pulse { animation: pulse 2s cubic-bezier(0.4,0,0.6,1) infinite; }

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
  .site-header, .site-footer, .btn, .no-print { display: none !important; }
  body { background: #fff; color: #000; }
  .card { border: 1px solid #ddd; box-shadow: none; }
}

/* ========================================
   TOOLTIP
   ======================================== */
[data-tooltip] {
  position: relative;
  cursor: help;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 110%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-sidebar);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition);
  z-index: 100;
  border: 1px solid var(--border-light);
}

[data-tooltip]:hover::after {
  opacity: 1;
}

/* ========================================
   TOGGLE SWITCH
   ======================================== */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--border-light);
  border-radius: var(--radius-full);
  transition: background var(--transition);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 3px;
  top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--transition);
}

.toggle-switch input:checked + .toggle-slider {
  background: var(--primary);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(20px);
}

/* ========================================
   EMPTY STATE
   ======================================== */
.empty-state {
  text-align: center;
  padding: 60px 24px;
}

.empty-state-icon {
  font-size: 60px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.empty-state p {
  color: var(--text-muted);
  font-size: 14px;
}

/* ========================================
   SECTION DIVIDER
   ======================================== */
.divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-light), transparent);
  margin: 32px 0;
}