/* ===== CSS Variables ===== */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --success: #22c55e;
  --bg-dark: #0f172a;
  --bg-card: #1e293b;
  --bg-input: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #334155;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --radius: 12px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* ===== Authentication ===== */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: radial-gradient(circle at top left, #164e63 0, var(--bg-dark) 42%), var(--bg-dark);
}

.auth-card {
  width: min(100%, 420px);
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  color: var(--primary-light);
}

.auth-brand i { font-size: 24px; }
.auth-brand h1 { font-size: 20px; color: var(--text-primary); }
.auth-card h2 { margin-bottom: 6px; }
.auth-subtitle { margin-bottom: 20px; color: var(--text-secondary); font-size: 14px; }

.auth-card label {
  display: block;
  margin: 14px 0 6px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
}

.auth-card input {
  width: 100%;
  padding: 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 14px;
}

.auth-card input:focus { outline: none; border-color: var(--primary); }
.auth-submit { width: 100%; margin-top: 22px; padding: 12px; background: var(--primary); color: white; border: 0; border-radius: 6px; font-weight: 600; cursor: pointer; }
.auth-submit:hover { background: var(--primary-dark); }
.auth-error { padding: 10px 12px; background: rgba(239, 68, 68, .15); color: #fca5a5; border-radius: 6px; font-size: 13px; }
.auth-switch { margin-top: 18px; color: var(--text-secondary); font-size: 13px; text-align: center; }
.auth-switch a { color: var(--primary-light); }

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

/* ===== Header ===== */
.header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

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

.logo i {
  font-size: 28px;
  color: var(--primary);
}

.logo h1 {
  font-size: 22px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.ai-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-input);
  border-radius: 20px;
  font-size: 14px;
}

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

.status-dot.connected {
  background: var(--success);
  box-shadow: 0 0 10px var(--success);
}

.status-dot.error {
  background: var(--danger);
  box-shadow: 0 0 10px var(--danger);
}

/* ===== Main Content ===== */
.main-content {
  padding: 30px 0;
}

/* ===== Section Styles ===== */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 15px;
}

.section-header h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  color: var(--text-primary);
}

.section-header h2 i {
  color: var(--primary);
}

/* ===== Create Section ===== */
.create-section {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 30px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

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

.form-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group label i {
  color: var(--primary);
}

textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 2px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  transition: var(--transition);
}

textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

textarea[readonly] {
  background: var(--bg-dark);
  cursor: default;
}

/* ===== Upload Area ===== */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.upload-area:hover {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.05);
}

.upload-content {
  text-align: center;
  color: var(--text-muted);
}

.upload-content i {
  font-size: 48px;
  margin-bottom: 12px;
  color: var(--primary-light);
}

.upload-content p {
  font-size: 16px;
  margin-bottom: 4px;
}

.upload-hint {
  font-size: 12px;
  color: var(--text-muted);
}

.image-preview {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-dark);
}

.image-preview img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.remove-image {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--danger);
  border: none;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.remove-image:hover {
  background: #dc2626;
  transform: scale(1.1);
}

/* ===== Generate Button ===== */
.btn-generate {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: var(--transition);
  margin-bottom: 20px;
}

.btn-generate:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-generate:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ===== Platform Grid ===== */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}

.platform-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px;
  background: var(--bg-input);
  border: 2px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition);
}

.platform-card:hover {
  border-color: var(--primary-light);
  transform: translateY(-2px);
}

.platform-card input {
  display: none;
}

.platform-card input:checked + .platform-icon {
  background: var(--primary);
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.5);
}

.platform-card input:checked ~ span {
  color: var(--primary);
  font-weight: 600;
}

.platform-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: white;
  background: var(--bg-dark);
  transition: var(--transition);
}

.platform-icon.twitter { color: #1da1f2; }
.platform-icon.instagram { color: #e4405f; }
.platform-icon.facebook { color: #1877f2; }
.platform-icon.linkedin { color: #0a66c2; }
.platform-icon.tiktok { color: #ff0050; }

.platform-card span {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ===== Schedule ===== */
.schedule-row {
  display: flex;
  align-items: center;
  gap: 15px;
  flex-wrap: wrap;
}

.schedule-input {
  flex: 1;
  min-width: 200px;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 2px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
}

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

/* Toggle Switch */
.toggle-switch {
  position: relative;
  width: 50px;
  height: 26px;
  flex-shrink: 0;
}

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

.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--bg-dark);
  border-radius: 26px;
  transition: var(--transition);
  border: 2px solid var(--border);
}

.slider:before {
  content: '';
  position: absolute;
  height: 18px;
  width: 18px;
  left: 2px;
  bottom: 2px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: var(--transition);
}

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

.toggle-switch input:checked + .slider:before {
  transform: translateX(24px);
  background: white;
}

.toggle-label {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ===== Submit Button ===== */
.btn-submit {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--secondary), #059669);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: var(--transition);
  margin-top: 10px;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ===== Posts Section ===== */
.posts-section {
  margin-bottom: 30px;
}

.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.posts-list {
  display: grid;
  gap: 15px;
}

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 16px;
  align-items: center;
  transition: var(--transition);
}

.post-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow);
}

.post-image {
  width: 80px;
  height: 80px;
  border-radius: 8px;
  object-fit: cover;
  background: var(--bg-dark);
}

.post-content h3 {
  font-size: 15px;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.post-content p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12px;
}

.post-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--text-muted);
}

.post-meta .platforms {
  display: flex;
  gap: 6px;
}

.post-meta .platforms i {
  font-size: 14px;
  padding: 2px;
}

.post-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.btn-retry {
  padding: 7px 10px;
  background: var(--warning);
  color: #111827;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.btn-retry:hover {
  filter: brightness(1.08);
}

.post-status {
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
}

.post-status.pending {
  background: rgba(245, 158, 11, 0.2);
  color: var(--warning);
}

.post-status.scheduled {
  background: rgba(99, 102, 241, 0.2);
  color: var(--primary-light);
}

.post-status.posted {
  background: rgba(34, 197, 94, 0.2);
  color: var(--success);
}

.post-status.failed {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

.btn-icon {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  font-size: 13px;
}

.btn-icon:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

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

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 64px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state p {
  font-size: 16px;
}

/* ===== Config Section ===== */
.config-section {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.config-card {
  background: var(--bg-input);
  border-radius: 10px;
  padding: 16px;
}

.config-card h4 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--text-primary);
  font-size: 15px;
}

.config-card h4 i {
  color: var(--primary);
}

.config-input {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 13px;
  margin-bottom: 8px;
  font-family: monospace;
}

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

.config-instructions {
  margin: 4px 0 12px;
  color: var(--text-secondary);
  font-size: 12px;
}

.connection-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px;
  margin-bottom: 12px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 13px;
}

.connection-status.authorized {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
}

.connection-status.not-authorized {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
}

.page-selector-label {
  display: block;
  margin: 0 0 6px;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
}

.facebook-page-selection {
  margin: -4px 0 20px;
  padding: 14px;
  background: rgba(24, 119, 242, 0.08);
  border: 1px solid rgba(24, 119, 242, 0.35);
  border-radius: 8px;
}

.facebook-page-selection label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
}

.page-select {
  width: 100%;
  padding: 11px 12px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 14px;
}

.page-selection-message {
  margin-top: 8px;
  color: var(--text-muted);
  font-size: 12px;
}

.page-selection-message.error {
  color: var(--danger);
}

.config-instructions summary {
  color: var(--primary-light);
  cursor: pointer;
  font-weight: 600;
}

.config-instructions ol {
  margin: 8px 0 0 18px;
  padding: 0;
}

.config-instructions li {
  margin-bottom: 5px;
}

.btn-save-config {
  width: 100%;
  padding: 10px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.config-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.btn-setup-config {
  width: 100%;
  padding: 10px;
  background: transparent;
  color: var(--primary-light);
  border: 1px solid var(--primary-light);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-setup-config:hover {
  background: rgba(129, 140, 248, 0.12);
}

.btn-save-config:hover {
  background: var(--primary-dark);
}

/* ===== Loading Overlay ===== */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.9);
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  z-index: 1000;
}

.loading-overlay.active {
  display: flex;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-overlay p {
  color: var(--text-secondary);
  font-size: 16px;
}

/* ===== Toast Notifications ===== */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1001;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  padding: 14px 20px;
  border-radius: 10px;
  color: white;
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
  box-shadow: var(--shadow);
  min-width: 300px;
}

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

.toast.error {
  background: linear-gradient(135deg, #dc2626, #ef4444);
}

.toast.info {
  background: linear-gradient(135deg, #4f46e5, #6366f1);
}

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

@keyframes fadeOut {
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 12px;
  }

  .logo h1 {
    font-size: 18px;
  }

  .post-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .post-image {
    margin: 0 auto;
  }

  .post-actions {
    flex-direction: row;
    justify-content: center;
  }

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

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .filter-tabs {
    width: 100%;
  }

  .filter-btn {
    flex: 1;
    text-align: center;
  }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

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

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}