/* ========================================
   WhatsApp Groups Manager - Glassmorphism UI
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-dark: #0a0a0f;
  --bg-gradient: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 50%, #0a0a0f 100%);
  --glass: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-hover: rgba(255, 255, 255, 0.06);

  --primary: #00d4aa;
  --primary-dark: #00b894;
  --primary-glow: rgba(0, 212, 170, 0.4);
  --accent: #667eea;
  --accent-glow: rgba(102, 126, 234, 0.3);

  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;

  --text: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;

  --radius: 16px;
  --radius-sm: 10px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-dark);
  background-image: var(--bg-gradient);
  min-height: 100vh;
  color: var(--text);
  line-height: 1.6;
}

/* ========================================
   Login Screen
   ======================================== */

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--bg-dark);
  background-image:
    radial-gradient(ellipse at top, rgba(0, 212, 170, 0.1) 0%, transparent 50%),
    var(--bg-gradient);
}

.login-box {
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 48px 40px;
  width: 100%;
  max-width: 400px;
  text-align: center;
  box-shadow:
    0 25px 50px -12px rgba(0, 0, 0, 0.5),
    0 0 100px rgba(0, 212, 170, 0.05);
}

.login-box h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.login-box > p {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 32px;
  letter-spacing: 2px;
}

.login-box .form-group {
  margin-bottom: 16px;
}

.login-box input {
  width: 100%;
  padding: 14px 18px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.login-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.login-box input::placeholder {
  color: var(--text-muted);
}

.login-error {
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 16px;
  min-height: 20px;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
  padding: 14px 28px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #000;
  box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--primary-glow);
}

.btn-success {
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
  color: #fff;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
}

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

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

.btn-block {
  width: 100%;
  margin-top: 8px;
}

.btn-small {
  padding: 8px 16px;
  font-size: 0.85rem;
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
}

.btn-small:hover {
  border-color: var(--danger);
  color: var(--danger);
}

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

/* ========================================
   Main Container
   ======================================== */

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ========================================
   Header
   ======================================== */

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 32px;
}

header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* ========================================
   Connection Status
   ======================================== */

.status {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
}

.status .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--danger);
}

.status.connected .dot {
  background: var(--success);
  box-shadow: 0 0 10px var(--success);
  animation: pulse 2s infinite;
}

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

.status.disconnected .text {
  color: var(--text-muted);
}

.status.connected .text {
  color: var(--success);
}

/* ========================================
   Main Grid
   ======================================== */

main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  flex: 1;
  padding-bottom: 40px;
}

@media (min-width: 768px) {
  main {
    grid-template-columns: repeat(2, 1fr);
  }

  #stats-section,
  #link-section,
  #groups-section,
  #logs-section,
  #qr-section {
    grid-column: span 2;
  }
}

/* ========================================
   Cards (Glassmorphism)
   ======================================== */

.card {
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all 0.3s ease;
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card h2 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card h2::before {
  content: '';
  width: 4px;
  height: 16px;
  background: var(--primary);
  border-radius: 2px;
}

/* ========================================
   QR Section
   ======================================== */

#qr-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-sm);
  padding: 24px;
}

#qr-container img {
  max-width: 200px;
  border-radius: var(--radius-sm);
  box-shadow: 0 0 30px var(--primary-glow);
}

#qr-container p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

#qr-container.connected {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(16, 185, 129, 0.05) 100%);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

#qr-container.connected p {
  color: var(--success);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

#qr-container.connected p::before {
  content: '✓';
  font-size: 1.2rem;
}

/* ========================================
   Stats Section
   ======================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

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

.stat-item {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 20px;
  text-align: center;
  transition: all 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 10px 30px rgba(0, 212, 170, 0.1);
}

.stat-icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ========================================
   Actions Section
   ======================================== */

.actions-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.actions-grid .btn {
  flex: 1;
  min-width: 180px;
}

/* ========================================
   Link Section
   ======================================== */

.link-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.link-description {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.link-url-box {
  position: relative;
}

.link-url-box input {
  width: 100%;
  padding: 16px 20px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--primary);
  font-size: 0.95rem;
  font-family: 'Monaco', 'Menlo', monospace;
  cursor: pointer;
  transition: all 0.3s ease;
}

.link-url-box input:hover {
  border-color: var(--primary);
  box-shadow: 0 0 20px var(--primary-glow);
}

.link-url-box input:focus {
  outline: none;
  border-color: var(--primary);
}

.link-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.link-info strong {
  color: var(--text);
  font-weight: 600;
}

/* ========================================
   Groups List
   ======================================== */

.groups-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.groups-header h2 {
  margin-bottom: 0;
}

.groups-actions {
  display: flex;
  gap: 8px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

#groups-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 400px;
  overflow-y: auto;
}

#groups-list > p {
  color: var(--text-muted);
  text-align: center;
  padding: 40px 20px;
}

.group-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
}

.group-item:hover {
  border-color: var(--primary);
  background: rgba(0, 212, 170, 0.05);
}

.group-info h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.group-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.member-count {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.group-status {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.group-status.active {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.group-status.full {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.btn-delete {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  font-size: 0.9rem;
}

.btn-delete:hover {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}

/* ========================================
   Logs Section
   ======================================== */

#logs-container {
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-sm);
  padding: 16px;
  max-height: 350px;
  overflow-y: auto;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.8rem;
}

.log-empty {
  color: var(--text-muted);
  text-align: center;
  padding: 40px 20px;
}

.log-entry {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--glass-border);
}

.log-entry:last-of-type {
  border-bottom: none;
}

.log-time {
  color: var(--text-muted);
  font-size: 0.75rem;
  white-space: nowrap;
  min-width: 70px;
}

.log-type {
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  min-width: 65px;
  text-align: center;
}

.log-type.info {
  background: rgba(102, 126, 234, 0.2);
  color: var(--accent);
}

.log-type.success {
  background: rgba(16, 185, 129, 0.2);
  color: var(--success);
}

.log-type.warning {
  background: rgba(245, 158, 11, 0.2);
  color: var(--warning);
}

.log-type.error {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

.log-message {
  flex: 1;
  color: var(--text-secondary);
  word-break: break-word;
}

.log-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--glass-border);
}

.log-pagination span {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.btn-page {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text);
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-page:hover:not(:disabled) {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-page:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ========================================
   Modal
   ======================================== */

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  padding: 20px;
}

.modal-content {
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 32px;
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
}

.modal-content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 24px;
  text-transform: none;
  letter-spacing: normal;
}

.modal-content h2::before {
  display: none;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

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

.form-group input[type="file"] {
  padding: 12px;
}

.image-preview {
  max-width: 100%;
  max-height: 150px;
  margin-top: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 28px;
}

/* ========================================
   Toast Notifications
   ======================================== */

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 16px 24px;
  background: var(--glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  z-index: 2000;
  animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.toast.success {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.1);
}

.toast.error {
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.1);
}

.toast.info {
  border-color: var(--accent);
  background: rgba(102, 126, 234, 0.1);
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes fadeOut {
  to {
    opacity: 0;
    transform: translateY(10px);
  }
}

/* ========================================
   Footer
   ======================================== */

footer {
  text-align: center;
  padding: 24px 0;
  color: var(--text-muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--glass-border);
  margin-top: auto;
}

/* ========================================
   Scrollbar
   ======================================== */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.15);
}