/**
 * Estilos Principales - Simulador y Creador de Tarjetas para Redes Sociales
 * Fijate Tools - Social Previewer
 */

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

:root {
  /* Paleta Base Oscura (Predeterminada) */
  --bg-app: #090d16;
  --bg-surface: #0f172a;
  --bg-surface-elevated: #1e293b;
  --bg-surface-hover: #334155;
  --bg-input: #0b1120;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: #3b82f6;
  --border-strong: rgba(255, 255, 255, 0.16);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  --accent-primary: #2563eb;
  --accent-primary-hover: #1d4ed8;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --accent-purple: #8b5cf6;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px -5px rgba(37, 99, 235, 0.35);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Outfit', var(--font-sans);
  --font-mono: 'JetBrains Mono', monospace;

  --header-height: 68px;
}

[data-theme="light"] {
  --bg-app: #f1f5f9;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f8fafc;
  --bg-surface-hover: #e2e8f0;
  --bg-input: #ffffff;

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-focus: #2563eb;
  --border-strong: rgba(0, 0, 0, 0.16);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 25px -5px rgba(37, 99, 235, 0.2);
}

/* Reset y Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-app);
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: radial-gradient(circle at 50% 0%, rgba(37, 99, 235, 0.08) 0%, transparent 60%), var(--bg-app);
}

/* Cabecera Principal */
.app-header {
  height: var(--header-height);
  background-color: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
}

[data-theme="light"] .app-header {
  background-color: rgba(255, 255, 255, 0.85);
}

.header-container {
  width: 100%;
  max-width: 1720px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 800;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  box-shadow: var(--shadow-glow);
}

.brand-text h1 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.brand-text span {
  font-size: 0.75rem;
  color: var(--text-secondary);
  display: block;
}

/* Barra de Inspección de URL en Header */
.url-inspect-bar {
  flex: 1;
  max-width: 620px;
  display: flex;
  align-items: center;
  background-color: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 0.25rem 0.35rem 0.25rem 1rem;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.url-inspect-bar:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
}

.url-inspect-icon {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  margin-right: 0.5rem;
}

.url-inspect-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  outline: none;
}

.url-inspect-input::placeholder {
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Botones y Controles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.55rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.18s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), #1d4ed8);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #1e40af);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.45);
}

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

.btn-secondary {
  background-color: var(--bg-surface-elevated);
  border-color: var(--border-subtle);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--border-strong);
}

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

.btn-ghost:hover {
  background-color: var(--bg-surface-hover);
  color: var(--text-primary);
}

.btn-pill {
  border-radius: var(--radius-full);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Layout Principal */
.app-main {
  flex: 1;
  max-width: 1720px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 460px 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 1200px) {
  .app-main {
    grid-template-columns: 420px 1fr;
  }
}

@media (max-width: 980px) {
  .app-main {
    grid-template-columns: 1fr;
  }
}

/* Paneles */
.panel {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.panel-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.panel-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.panel-body {
  padding: 1.25rem;
}

/* Formularios y Campos */
.form-group {
  margin-bottom: 1.2rem;
}

.form-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.4rem;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.char-counter {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 600;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface-elevated);
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.char-counter.status-optimal {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
}

.char-counter.status-warning {
  background-color: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
}

.char-counter.status-danger {
  background-color: rgba(244, 63, 94, 0.15);
  color: var(--accent-rose);
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  background-color: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.85rem;
  color: var(--text-primary);
  font-size: 0.88rem;
  font-family: var(--font-sans);
  transition: all 0.18s ease;
  outline: none;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
  line-height: 1.45;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.form-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.75rem;
}

/* Tarjeta de Gestión de Imagen OG */
.image-upload-card {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-md);
  padding: 1rem;
  background-color: var(--bg-input);
  text-align: center;
  transition: all 0.2s ease;
  position: relative;
}

.image-upload-card.drag-over {
  border-color: var(--accent-primary);
  background-color: rgba(37, 99, 235, 0.08);
}

.image-preview-thumb {
  width: 100%;
  height: 140px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  margin-bottom: 0.75rem;
  border: 1px solid var(--border-subtle);
}

.image-actions-row {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Auditor SEO & Score */
.audit-card {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.7), rgba(15, 23, 42, 0.9));
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-top: 1.25rem;
}

.audit-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.audit-score-badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.score-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  color: #ffffff;
}

.score-excellent {
  background: linear-gradient(135deg, #10b981, #059669);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.35);
}

.score-good {
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.35);
}

.score-warning {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.35);
}

.score-bad {
  background: linear-gradient(135deg, #f43f5e, #e11d48);
  box-shadow: 0 0 15px rgba(244, 63, 94, 0.35);
}

.audit-score-text h4 {
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.2;
}

.audit-score-text span {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.audit-checklist {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.audit-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.8rem;
  line-height: 1.35;
  padding: 0.5rem 0.65rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
}

.audit-icon-success { color: var(--accent-emerald); flex-shrink: 0; }
.audit-icon-warning { color: var(--accent-amber); flex-shrink: 0; }
.audit-icon-error { color: var(--accent-rose); flex-shrink: 0; }
.audit-icon-info { color: var(--accent-cyan); flex-shrink: 0; }

.audit-item-content strong {
  display: block;
  font-size: 0.82rem;
  margin-bottom: 0.1rem;
}

.audit-item-content p {
  color: var(--text-secondary);
  font-size: 0.78rem;
}

/* Barra de Pestañas / Selector de Plataforma */
.view-tabs-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 0.5rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.platform-tabs {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  overflow-x: auto;
  padding-bottom: 2px;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
}

.tab-btn:hover {
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
}

.tab-btn.active {
  background-color: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.3);
}

.preview-theme-toggle {
  display: flex;
  align-items: center;
  background-color: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 0.2rem;
}

.theme-toggle-btn {
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-full);
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: all 0.18s ease;
}

.theme-toggle-btn.active {
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
}

/* Área de Código Generado */
.code-export-panel {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 1.5rem;
}

.code-tabs {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-input);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.5rem 1rem;
}

.code-subtabs {
  display: flex;
  gap: 0.35rem;
}

.code-subtab {
  padding: 0.35rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.code-subtab:hover {
  color: var(--text-primary);
}

.code-subtab.active {
  background-color: var(--bg-surface-elevated);
  border-color: var(--border-subtle);
  color: var(--text-primary);
}

.code-viewer {
  background-color: #0b1120;
  padding: 1.25rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  color: #e2e8f0;
  max-height: 280px;
}

/* Modales */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-dialog {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
}

.modal-close {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  background-color: var(--bg-input);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  min-width: 280px;
  max-width: 420px;
  padding: 0.85rem 1.1rem;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-primary);
  font-size: 0.85rem;
}

.toast-success { border-left: 4px solid var(--accent-emerald); }
.toast-error { border-left: 4px solid var(--accent-rose); }
.toast-warning { border-left: 4px solid var(--accent-amber); }
.toast-info { border-left: 4px solid var(--accent-cyan); }

.toast-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  margin-left: auto;
  font-size: 1.2rem;
}

/* Animaciones */
.animate-fade-in { animation: fadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.animate-fade-out { animation: fadeOut 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.animate-scale-up { animation: scaleUp 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.animate-slide-in { animation: slideIn 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards; }

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes scaleUp {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}