/**
 * InstaGrid Prompt - Modern Edition
 * Estilos inspirados en Banana Prompts
 */

/* ===== VARIABLES CSS ===== */
:root {
  /* Colores Tema Claro */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.9);
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
  --shadow-color: rgba(15, 23, 42, 0.08);
  --shadow-strong: rgba(15, 23, 42, 0.15);
  --overlay: rgba(0, 0, 0, 0.6);
  
  /* Colores de acento */
  --accent-primary: #0f172a;
  --accent-secondary: #1e293b;
  --accent-hover: #334155;
  --gradient-start: rgba(248, 250, 252, 0.95);
  --gradient-end: rgba(224, 231, 255, 0);
  
  /* Efectos y sombras */
  --blur-amount: 12px;
  --shadow-sm: 0 12px 36px var(--shadow-color);
  --shadow-md: 0 12px 36px var(--shadow-strong);
  --shadow-lg: 0 20px 60px var(--shadow-color);
  
  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 28px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  
  /* Espaciado */
  --container-padding: 1.5rem;
  --gap-sm: 0.75rem;
  --gap-md: 1.5rem;
  --gap-lg: 2.5rem;
  
  /* Z-index */
  --z-base: 1;
  --z-header: 30;
  --z-modal: 50;
  --z-toast: 100;
  
  /* Transiciones */
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.2s ease;
}

/* Tema Oscuro */
.dark-theme {
  --bg-primary: #020617;
  --bg-secondary: #0f172a;
  --bg-card: rgba(15, 23, 42, 0.7);
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --border-color: #1e293b;
  --shadow-color: rgba(15, 23, 42, 0.55);
  --shadow-strong: rgba(15, 23, 42, 0.75);
  
  --accent-primary: #f1f5f9;
  --accent-secondary: #e2e8f0;
  --accent-hover: #cbd5e1;
  --gradient-start: rgba(30, 41, 59, 0.7);
  --gradient-end: rgba(2, 8, 23, 0);
}

/* ===== RESET Y BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

body.theme-transition {
  transition: background-color 0.3s ease, color 0.3s ease;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ===== LAYOUT PRINCIPAL ===== */
.site-wrapper {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.bg-gradient {
  position: absolute;
  inset: 0;
  top: 0;
  height: 420px;
  background: radial-gradient(circle at top, var(--gradient-start) 0%, var(--gradient-end) 70%);
  pointer-events: none;
  z-index: 0;
}

/* ===== HEADER ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--bg-card);
  backdrop-filter: blur(var(--blur-amount));
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

.header-content {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0.75rem var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-md);
  border-radius: var(--radius-full);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  transition: var(--transition-fast);
}

.brand-link:hover {
  opacity: 0.8;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #f59e0b;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.6);
}

.dark-theme .brand-dot {
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.6);
}

.brand-text {
  color: var(--text-primary);
}

.mobile-menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.mobile-menu-toggle:hover {
  border-color: var(--accent-hover);
  background: var(--bg-primary);
}

.icon-menu {
  width: 16px;
  height: 16px;
}

.main-nav {
  flex: 1;
  display: flex;
  justify-content: flex-start;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  padding: 0.5rem 0;
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--text-primary);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.nav-link:hover::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.theme-toggle:hover {
  border-color: var(--accent-hover);
  background: var(--bg-primary);
  color: var(--text-primary);
}

.theme-icon {
  width: 16px;
  height: 16px;
}

/* ===== CONTENIDO PRINCIPAL ===== */
.site-main {
  flex: 1;
  position: relative;
  z-index: 1;
  margin-top: 4rem;
  margin-bottom: 6rem;
}

.page-container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ===== GRID DE PROMPTS ===== */
.prompts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.prompt-card {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.prompt-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
}

.card-link {
  display: block;
  position: relative;
  width: 100%;
  height: 100%;
  text-decoration: none;
}

/* Imagen de fondo */
.card-bg-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.card-link:hover .card-bg-image {
  transform: scale(1.08);
}

.card-bg-placeholder {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* Gradiente overlay */
.card-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.2) 0%,
    rgba(0, 0, 0, 0.1) 40%,
    rgba(0, 0, 0, 0.6) 70%,
    rgba(0, 0, 0, 0.85) 100%
  );
  z-index: 1;
}

/* Header de la card (badge y likes) */
.card-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  z-index: 2;
}

.card-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(12px);
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: white;
  max-width: 70%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card-likes {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.75rem;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(12px);
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card-likes svg {
  width: 14px;
  height: 14px;
  stroke: white;
}

/* Contenido overlay */
.card-overlay-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem 1.25rem;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card-description {
  font-size: 0.9rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.95);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 400;
}

/* Footer de la card */
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.card-copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  background: rgba(255, 255, 255, 0.95);
  color: #1a1a1a;
  border: none;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  backdrop-filter: blur(10px);
}

.card-copy-btn:hover {
  background: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.card-copy-btn svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
}

.card-author {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===== VISTA DETALLE ===== */
.detail-container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.back-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.5rem 0;
  margin-bottom: 2.5rem;
  transition: var(--transition-fast);
}

.back-button:hover {
  color: var(--text-primary);
}

.back-icon {
  width: 16px;
  height: 16px;
}

.detail-layout {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: var(--gap-lg);
}

.detail-image-column {
  position: relative;
}

.detail-image-wrapper {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  box-shadow: var(--shadow-lg);
}

.detail-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.4) 0%, transparent 50%);
}

.detail-image-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
}

.placeholder-icon-large {
  width: 96px;
  height: 96px;
  color: var(--text-muted);
}

.detail-info-column {
  display: flex;
  flex-direction: column;
  gap: var(--gap-md);
}

.detail-badge {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  background: var(--accent-primary);
  color: var(--bg-primary);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.22em;
}

.dark-theme .detail-badge {
  background: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.detail-title {
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
}

.detail-meta {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.meta-author,
.meta-date {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.prompt-box {
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  backdrop-filter: blur(var(--blur-amount));
  box-shadow: var(--shadow-md);
}

.prompt-label {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.prompt-content {
  max-height: 320px;
  overflow-y: auto;
  padding-right: 0.5rem;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-wrap: break-word;
}

.prompt-content::-webkit-scrollbar {
  width: 6px;
}

.prompt-content::-webkit-scrollbar-track {
  background: var(--bg-primary);
  border-radius: 3px;
}

.prompt-content::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 3px;
}

.prompt-content::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

.prompt-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-sm);
  margin-top: 1.25rem;
}

.action-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  transition: var(--transition-base);
}

.action-button-primary {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

.action-button-primary:hover {
  background: var(--accent-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.dark-theme .action-button-primary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.dark-theme .action-button-primary:hover {
  background: var(--accent-hover);
}

.action-button-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.action-button-secondary:hover {
  border-color: var(--accent-hover);
  background: var(--bg-primary);
}

.button-icon {
  width: 16px;
  height: 16px;
}

.likes-box {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  backdrop-filter: blur(var(--blur-amount));
  box-shadow: var(--shadow-sm);
}

.like-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  background: var(--bg-primary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition-base);
}

.like-button:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-hover);
}

.like-button.is-liked {
  background: #ef4444;
  color: white;
  border-color: #ef4444;
}

.like-button.is-liked .like-icon {
  fill: white;
}

.like-icon {
  width: 16px;
  height: 16px;
  transition: fill 0.3s ease;
}

.like-count {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.likes-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--text-muted);
}

.info-box {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  backdrop-filter: blur(var(--blur-amount));
  box-shadow: var(--shadow-sm);
}

.info-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.info-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-muted);
}

.info-value {
  font-size: 1rem;
  color: var(--text-primary);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
}

/* ===== FOOTER ===== */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: auto;
  padding: 1rem var(--container-padding);
  border-top: 1px solid var(--border-color);
}

.footer-content {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-md);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.footer-copyright {
  flex: 1;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.footer-link {
  transition: var(--transition-fast);
}

.footer-link:hover {
  color: var(--text-primary);
}

.theme-toggle-footer {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.theme-toggle-footer:hover {
  border-color: var(--accent-hover);
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* ===== MENSAJES Y ESTADOS ===== */
.no-posts {
  text-align: center;
  padding: 4rem 2rem;
}

.no-posts h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.no-posts p {
  color: var(--text-secondary);
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(150%);
  padding: 0.875rem 1.5rem;
  border-radius: var(--radius-full);
  background: var(--accent-primary);
  color: var(--bg-primary);
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: var(--z-toast);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1200px) {
  .prompts-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

@media (max-width: 1024px) {
  .prompts-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
  
  .detail-layout {
    grid-template-columns: 1fr;
  }
  
  .detail-image-wrapper {
    max-height: 600px;
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 1rem;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .main-nav {
    display: none;
  }
  
  .prompts-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  
  .prompt-card {
    aspect-ratio: 3 / 4;
  }
  
  .card-badge {
    font-size: 0.7rem;
    padding: 0.4rem 0.8rem;
  }
  
  .card-description {
    font-size: 0.85rem;
    -webkit-line-clamp: 2;
  }
  
  .card-copy-btn {
    font-size: 0.8rem;
    padding: 0.5rem 0.875rem;
  }
  
  .card-author {
    font-size: 0.75rem;
  }
  
  .detail-title {
    font-size: 1.5rem;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .header-content {
    padding: 0.5rem 1rem;
  }
  
  .brand-text {
    font-size: 0.65rem;
  }
  
  .prompts-grid {
    gap: 1rem;
  }
  
  .card-header {
    padding: 0.875rem 1rem;
  }
  
  .card-overlay-content {
    padding: 1.25rem 1rem;
  }
  
  .card-footer {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }
  
  .card-copy-btn {
    width: 100%;
    justify-content: center;
  }
  
  .card-author {
    text-align: center;
  }
  
  .detail-title {
    font-size: 1.25rem;
  }
  
  .prompt-box,
  .likes-box,
  .info-box {
    padding: 1rem;
  }
}