/* =======================================================
   AEgis Escrow — Light Theme Styles
   Version: 1.0
   Author: AEgis Dev Team
   Description: Unified light theme for crypto escrow MVP
   ======================================================= */

/* ---------- Root Variables ---------- */
:root {
  --primary: #1D4ED8;
  --primary-hover: #2563EB;
  --primary-active: #1E40AF;
  --secondary: #E5E7EB;
  --accent: #3B82F6;
  --background: #F9FAFB;
  --card-bg: #FFFFFF;
  --border: #E5E7EB;
  --text-primary: #111827;
  --text-secondary: #4B5563;
  --success: #16A34A;
  --warning: #F59E0B;
  --error: #DC2626;
  --info: #0284C7;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* ---------- Global Reset ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Segoe UI', Roboto, sans-serif;
  background-color: var(--background);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

h1 { font-size: 2.25rem; font-weight: 700; }
h2 { font-size: 1.75rem; font-weight: 600; }
h3 { font-size: 1.25rem; font-weight: 500; }

p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

small {
  font-size: 0.875rem;
  color: #6B7280;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 10px 18px;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-align: center;
  text-decoration: none;
  min-height: 44px; /* Touch-friendly */
}

.btn-primary {
  background-color: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-primary:active {
  background-color: var(--primary-active);
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--secondary);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: #D1D5DB;
}

.btn-danger {
  background-color: var(--error);
  color: #fff;
}

.btn-danger:hover {
  background-color: #B91C1C;
}

.btn-success {
  background-color: var(--success);
  color: #fff;
}

.btn-success:hover {
  background-color: #15803D;
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.875rem;
  min-height: 36px;
}

.btn-lg {
  padding: 12px 24px;
  font-size: 1.125rem;
  min-height: 52px;
}

/* ---------- Cards ---------- */
.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 20px;
  margin-bottom: 20px;
  transition: all 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-header {
  margin-bottom: 15px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 5px 0 0 0;
}

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

.form-label {
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
  display: block;
}

input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background-color: #fff;
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color 0.2s ease;
  min-height: 44px; /* Touch-friendly */
}

input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

input::placeholder, textarea::placeholder {
  color: #9CA3AF;
}

.form-error {
  font-size: 0.875rem;
  color: var(--error);
  margin-top: 5px;
}

.form-help {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 5px;
}

/* ---------- Header & Nav ---------- */
header {
  background-color: #fff;
  border-bottom: 1px solid var(--border);
  padding: 15px 20px;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
}

.navbar .logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.navbar ul {
  display: flex;
  list-style: none;
  gap: 1.25rem;
  align-items: center;
}

.navbar ul li a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.navbar ul li a:hover {
  color: var(--primary);
}

.navbar ul li a.active {
  color: var(--primary);
  font-weight: 600;
}

/* ---------- Mobile Navigation ---------- */
.hamburger {
  display: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  background-color: var(--secondary);
  border: none;
}

.hamburger div {
  width: 25px;
  height: 3px;
  background-color: var(--text-primary);
  margin: 5px 0;
  transition: 0.4s;
}

.hamburger:hover {
  background-color: #D1D5DB;
}

@media (max-width: 768px) {
  .navbar ul {
    display: none;
    flex-direction: column;
    background: #fff;
    position: absolute;
    top: 60px;
    right: 20px;
    width: 200px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 15px;
    border: 1px solid var(--border);
  }

  .navbar ul.active {
    display: flex;
  }

  .hamburger {
    display: block;
  }
}

/* ---------- Hero Section ---------- */
.hero-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 50%, var(--accent) 100%);
  color: #FFFFFF;
  padding: 80px 0;
  text-align: center;
}

.hero-gradient h1 {
  color: #FFFFFF;
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.hero-gradient p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto 40px auto;
}

/* ---------- Status Badges ---------- */
.badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-success {
  background-color: #DCFCE7;
  color: var(--success);
}

.badge-warning {
  background-color: #FEF3C7;
  color: var(--warning);
}

.badge-error {
  background-color: #FEE2E2;
  color: var(--error);
}

.badge-info {
  background-color: #DBEAFE;
  color: var(--info);
}

.badge-primary {
  background-color: #DBEAFE;
  color: var(--primary);
}

/* ---------- Escrow Status ---------- */
.escrow-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
}

.escrow-status.pending {
  background-color: #FEF3C7;
  color: var(--warning);
}

.escrow-status.active {
  background-color: #DCFCE7;
  color: var(--success);
}

.escrow-status.completed {
  background-color: #DBEAFE;
  color: var(--info);
}

.escrow-status.disputed {
  background-color: #FEE2E2;
  color: var(--error);
}

/* ---------- Bitcoin Address ---------- */
.bitcoin-address {
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  background-color: #F3F4F6;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  font-size: 0.875rem;
  word-break: break-all;
  margin: 10px 0;
}

/* ---------- QR Code Container ---------- */
.qr-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  padding: 20px;
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.qr-container img {
  max-width: 200px;
  height: auto;
}

/* ---------- Payment Progress ---------- */
.payment-progress {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin: 20px 0;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--secondary);
  border-radius: 4px;
  overflow: hidden;
  margin: 15px 0;
}

.progress-fill {
  height: 100%;
  background-color: var(--success);
  transition: width 0.3s ease;
}

/* ---------- Dashboard Stats ---------- */
.stat-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ---------- Admin Dashboard ---------- */
.admin-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 15px;
}

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

.admin-table th {
  background-color: var(--background);
  font-weight: 600;
  color: var(--text-primary);
}

.admin-table tr:hover {
  background-color: var(--background);
}

/* ---------- Message System ---------- */
.message-bubble {
  max-width: 70%;
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  word-wrap: break-word;
}

.message-bubble.sender {
  background-color: var(--primary);
  color: #FFFFFF;
  margin-left: auto;
  border-bottom-right-radius: 4px;
}

.message-bubble.receiver {
  background-color: var(--secondary);
  color: var(--text-primary);
  margin-right: auto;
  border-bottom-left-radius: 4px;
}

/* ---------- FAQ Styles ---------- */
.faq-item {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  padding: 15px;
  background-color: var(--background);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  font-weight: 500;
  color: var(--text-primary);
  transition: background-color 0.2s ease;
}

.faq-question:hover {
  background-color: var(--secondary);
}

.faq-answer {
  padding: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-content.active {
  max-height: 500px;
}

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

.faq-icon.rotated {
  transform: rotate(180deg);
}

/* ---------- Review Cards ---------- */
.review-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}

.review-header {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 15px;
}

.review-rating {
  display: flex;
  gap: 4px;
}

.star {
  color: var(--warning);
  font-size: 1.125rem;
}

.star-rating {
  color: var(--warning);
}

/* ---------- Contact Form ---------- */
.contact-form {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-md);
}

/* ---------- Legal Content ---------- */
.legal-content,
.privacy-content {
  line-height: 1.8;
  color: var(--text-secondary);
}

.legal-content h2,
.privacy-content h2 {
  color: var(--primary);
  font-weight: 700;
  margin-top: 30px;
  margin-bottom: 15px;
}

.legal-content h3,
.privacy-content h3 {
  color: var(--text-primary);
  font-weight: 600;
  margin-top: 25px;
  margin-bottom: 10px;
}

/* ---------- Flash Messages ---------- */
.message {
  padding: 15px;
  border-radius: var(--radius-md);
  margin-bottom: 15px;
  border: 1px solid;
}

.message.success {
  background-color: #F0FDF4;
  border-color: #BBF7D0;
  color: var(--success);
}

.message.error {
  background-color: #FEF2F2;
  border-color: #FECACA;
  color: var(--error);
}

.message.warning {
  background-color: #FFFBEB;
  border-color: #FDE68A;
  color: var(--warning);
}

.message.info {
  background-color: #EFF6FF;
  border-color: #BFDBFE;
  color: var(--info);
}

/* ---------- Mobile Menu ---------- */
#mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--card-bg);
  z-index: 1000;
  padding: 20px;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
}

#mobile-menu.show {
  transform: translateX(0);
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border);
}

.mobile-menu-nav {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.mobile-menu-link {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text-primary);
  text-decoration: none;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.mobile-menu-link:hover {
  color: var(--primary);
}

/* ---------- Back to Top Button ---------- */
.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background-color: var(--primary);
  color: #FFFFFF;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: all 0.2s ease;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
}

/* ---------- Loading States ---------- */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-radius: 50%;
  border-top-color: var(--primary);
  animation: spin 1s ease-in-out infinite;
}

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

/* ---------- Cards & Dashboard ---------- */
.dashboard {
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 24px;
  max-width: 1200px;
  margin: 40px auto;
  padding: 0 20px;
}

@media (max-width: 1024px) {
  .dashboard {
    grid-template-columns: 1fr;
  }
}

/* ---------- Container ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.container-fluid {
  width: 100%;
  padding: 0 20px;
}

.section {
  padding: 60px 0;
}

/* ---------- Grid System ---------- */
.grid {
  display: grid;
  gap: 20px;
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- Footer ---------- */
footer {
  background-color: #fff;
  border-top: 1px solid var(--border);
  padding: 20px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ---------- Utility Classes ---------- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }

.p-1 { padding: 10px; }
.p-2 { padding: 20px; }
.p-3 { padding: 30px; }

.w-100 { width: 100%; }

.rounded { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* ---------- Responsive Design ---------- */
@media (max-width: 768px) {
  h1 { font-size: 1.875rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.125rem; }
  
  .container {
    padding: 0 15px;
  }
  
  .card {
    padding: 15px;
  }
  
  .btn {
    width: 100%;
    margin-bottom: 10px;
  }
  
  .hero-gradient {
    padding: 60px 0;
  }
  
  .hero-gradient h1 {
    font-size: 2rem;
  }
  
  .hero-gradient p {
    font-size: 1rem;
  }
  
  .section {
    padding: 40px 0;
  }
  
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
  
  .stat-card {
    padding: 15px;
  }
  
  .stat-number {
    font-size: 1.5rem;
  }
  
  .admin-table {
    font-size: 0.875rem;
  }
  
  .admin-table th,
  .admin-table td {
    padding: 8px;
  }
  
  .message-bubble {
    max-width: 85%;
  }
  
  .contact-form {
    padding: 20px;
  }
  
  .back-to-top {
    bottom: 15px;
    right: 15px;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 480px) {
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
  
  .container {
    padding: 0 10px;
  }
  
  .card {
    padding: 12px;
  }
  
  .hero-gradient {
    padding: 40px 0;
  }
  
  .hero-gradient h1 {
    font-size: 1.75rem;
  }
  
  .section {
    padding: 30px 0;
  }
  
  .stat-card {
    padding: 12px;
  }
  
  .stat-number {
    font-size: 1.25rem;
  }
  
  .contact-form {
    padding: 15px;
  }
  
  .admin-table {
    font-size: 0.75rem;
  }
  
  .admin-table th,
  .admin-table td {
    padding: 6px;
  }
}

/* ---------- Print Styles ---------- */
@media print {
  .navbar,
  .btn,
  .back-to-top,
  #mobile-menu {
    display: none !important;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #000000;
  }
  
  .hero-gradient {
    background: #f0f0f0 !important;
    color: #000000 !important;
  }
  
  .hero-gradient h1,
  .hero-gradient p {
    color: #000000 !important;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
  }
  
  h1 { font-size: 18pt; }
  h2 { font-size: 16pt; }
  h3 { font-size: 14pt; }
  
  .container {
    max-width: none;
    padding: 0;
  }
  
  .section {
    padding: 20pt 0;
  }
  
  .card {
    padding: 15pt;
    margin-bottom: 15pt;
  }
}