:root {
  --bg-dark: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-card-hover: rgba(30, 41, 59, 0.9);
  --border-color: rgba(255, 255, 255, 0.1);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  
  --primary: #10b981;
  --primary-hover: #059669;
  --secondary: #334155;
  --accent: #6366f1;
  --facebook-blue: #1877f2;
  --instagram-pink: #e1306c;
  --whatsapp-green: #25d366;
  --danger: #ef4444;
  --warning: #f59e0b;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body.dark-theme {
  font-family: 'Plus Jakarta Sans', 'Outfit', sans-serif;
  background: radial-gradient(circle at top right, #1e1b4b, #0f172a 60%);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
}

/* Header */
.app-header {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.modal-card.wide-modal {
  max-width: 650px;
}

.preview-modal-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
}

.modal-prev-tab {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
}

.modal-prev-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.modal-preview-viewport {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 380px;
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
}

.brand-text h1 {
  font-family: 'Outfit', sans-serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.brand-text .sub-title {
  font-size: 13px;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.status-badge {
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.status-badge.live {
  background: rgba(16, 185, 129, 0.15);
  color: var(--primary);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Nav Tabs */
.nav-tabs {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
}

.nav-tab {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.nav-tab:hover {
  color: var(--text-main);
}

.nav-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* App Main Content */
.app-content {
  max-width: 1400px;
  margin: 24px auto;
  padding: 0 24px 60px 24px;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.section-header h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 24px;
  font-weight: 700;
}

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

/* Buttons & Inputs */
.btn {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
  background: var(--secondary);
  color: var(--text-main);
}
.btn-secondary:hover {
  background: #475569;
}

.btn-success {
  background: #0284c7;
  color: #fff;
}
.btn-success:hover {
  background: #0369a1;
}

.btn-danger {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.4);
}
.btn-danger:hover {
  background: var(--danger);
  color: #fff;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

/* 7-Day Weekly Grid */
.weekly-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

.day-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.day-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(16, 185, 129, 0.4);
  transform: translateY(-2px);
}

.day-card.disabled {
  opacity: 0.5;
}

.day-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.day-title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.day-badge {
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
}

.day-time {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
}

.day-card-body h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.day-category {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.day-preview-text {
  font-size: 13px;
  color: #cbd5e1;
  background: rgba(15, 23, 42, 0.5);
  padding: 10px;
  border-radius: var(--radius-sm);
  max-height: 80px;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 14px;
}

.day-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
}

.platform-icons {
  display: flex;
  gap: 8px;
  font-size: 14px;
}

.platform-icons i.fa-facebook { color: var(--facebook-blue); }
.platform-icons i.fa-instagram { color: var(--instagram-pink); }
.platform-icons i.fa-whatsapp { color: var(--whatsapp-green); }

/* Switch Toggle */
.switch {
  appearance: none;
  width: 40px;
  height: 22px;
  background: #475569;
  border-radius: 20px;
  position: relative;
  cursor: pointer;
  outline: none;
  transition: var(--transition);
}

.switch:checked {
  background: var(--primary);
}

.switch::before {
  content: '';
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  position: absolute;
  top: 3px;
  left: 3px;
  transition: var(--transition);
}

.switch:checked::before {
  left: 21px;
}

/* Composer Layout */
.composer-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

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

.composer-form-panel, .composer-preview-panel {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.panel-header, .preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 14px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-main);
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="time"],
.form-group input[type="datetime-local"],
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.platform-checkboxes {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.platform-chip {
  padding: 8px 14px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.platform-chip:hover {
  border-color: var(--primary);
}

.platform-chip.facebook i { color: var(--facebook-blue); }
.platform-chip.instagram i { color: var(--instagram-pink); }
.platform-chip.whatsapp i { color: var(--whatsapp-green); }

.lang-selector-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-lang {
  padding: 6px 12px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-main);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
}

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

.media-input-row {
  display: flex;
  gap: 10px;
}

/* Upload Dropzone */
.upload-dropzone {
  border: 2px dashed rgba(16, 185, 129, 0.4);
  background: rgba(15, 23, 42, 0.6);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.upload-dropzone:hover, .upload-dropzone.dragover {
  border-color: var(--primary);
  background: rgba(16, 185, 129, 0.1);
  transform: scale(1.01);
}

.upload-icon {
  font-size: 32px;
  color: var(--primary);
}

.upload-text strong {
  display: block;
  font-size: 14px;
  color: var(--text-main);
}

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

.uploaded-image-preview {
  margin-top: 12px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.uploaded-image-preview img {
  max-height: 80px;
  border-radius: 6px;
  object-fit: cover;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

/* Multi-Platform Live Previews */
.preview-tabs {
  display: flex;
  gap: 6px;
}

.prev-tab {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 6px 12px;
  font-size: 12px;
  border-radius: 20px;
  cursor: pointer;
}

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

.preview-viewport {
  min-height: 420px;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Facebook Card Mockup */
.fb-mockup {
  width: 100%;
  max-width: 480px;
  background: #242526;
  border-radius: 10px;
  padding: 14px;
  color: #e4e6eb;
  box-shadow: var(--shadow);
}

.fb-mockup .mockup-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.fb-mockup .avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

.fb-mockup .meta {
  display: flex;
  flex-direction: column;
}

.fb-mockup .page-name { font-size: 14px; color: #e4e6eb; }
.fb-mockup .post-time { font-size: 11px; color: #b0b3b8; }
.fb-mockup .mockup-body { font-size: 14px; margin-bottom: 12px; white-space: pre-wrap; }
.fb-mockup .mockup-image img { width: 100%; border-radius: 6px; margin-bottom: 12px; }
.fb-mockup .mockup-footer {
  display: flex;
  justify-content: space-around;
  border-top: 1px solid #3e4042;
  padding-top: 10px;
  font-size: 13px;
  color: #b0b3b8;
}

/* Instagram Phone Mockup */
.ig-mockup {
  width: 100%;
  max-width: 380px;
  background: #000;
  border-radius: 16px;
  border: 1px solid #333;
  padding: 12px;
  color: #fff;
  box-shadow: var(--shadow);
}

.ig-mockup .mockup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.ig-mockup .avatar { width: 32px; height: 32px; border-radius: 50%; }
.ig-mockup .meta { flex-grow: 1; margin-left: 10px; }
.ig-mockup .page-name { font-size: 13px; display: block; }
.ig-mockup .location { font-size: 10px; color: #aaa; }
.ig-mockup .mockup-image img { width: 100%; aspect-ratio: 1/1; object-fit: cover; border-radius: 4px; }
.ig-mockup .mockup-actions { display: flex; justify-content: space-between; font-size: 18px; margin: 10px 0; }
.ig-mockup .mockup-caption { font-size: 13px; white-space: pre-wrap; }

/* WhatsApp Chat Mockup */
.wa-mockup {
  width: 100%;
  max-width: 400px;
  background: #0b141a;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.wa-header {
  background: #202c33;
  padding: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #e9edef;
  font-size: 14px;
}

.wa-header .avatar { width: 36px; height: 36px; border-radius: 50%; }
.wa-chat-bg {
  background-image: radial-gradient(#202c33 1px, transparent 1px);
  background-size: 16px 16px;
  background-color: #0b141a;
  padding: 16px;
  min-height: 320px;
}

.wa-bubble {
  background: #005c4b;
  color: #e9edef;
  padding: 12px;
  border-radius: 8px;
  font-size: 13px;
  max-width: 90%;
  margin-left: auto;
  position: relative;
  white-space: pre-wrap;
}

.wa-bubble .mockup-image img { width: 100%; border-radius: 6px; margin-bottom: 8px; }
.wa-time { display: block; text-align: right; font-size: 10px; color: rgba(255,255,255,0.6); margin-top: 4px; }

/* Posts Queue List */
.queue-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.queue-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.queue-info h4 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.queue-meta { font-size: 12px; color: var(--text-muted); display: flex; gap: 12px; }

/* Presets Grid */
.presets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 20px;
}

.preset-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
}

.preset-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.preset-preview { font-size: 13px; color: var(--text-muted); background: rgba(15,23,42,0.6); padding: 10px; border-radius: 6px; margin: 12px 0; max-height: 90px; overflow: hidden; }

/* Modal */
.modal-backdrop {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal-card {
  background: #1e293b;
  width: 100%;
  max-width: 550px;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

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

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--primary);
  color: #fff;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  font-weight: 600;
  z-index: 300;
}