/* ==========================================================================
   ShaMinKet — Citador Bibliográfico (Winter / Christmas Edition)
   Paleta Estricta: Negro Obsidiana, Azul Eléctrico y Morado Profundo
   ========================================================================== */

:root {
  --bg-obsidian: #060811;
  --bg-deep: #0b0f1f;
  --bg-card: rgba(16, 22, 43, 0.78);
  --bg-card-elevated: rgba(24, 32, 62, 0.85);
  --bg-input: rgba(8, 11, 22, 0.85);

  --border-subtle: rgba(139, 92, 246, 0.22);
  --border-blue: rgba(59, 130, 246, 0.35);
  --border-glow: rgba(139, 92, 246, 0.55);

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-blue: #3b82f6;
  --accent-blue-light: #60a5fa;
  --accent-blue-glow: rgba(59, 130, 246, 0.38);

  --accent-purple: #8b5cf6;
  --accent-purple-light: #a78bfa;
  --accent-purple-glow: rgba(139, 92, 246, 0.38);

  --frost-white: #e0f2fe;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-pill: 9999px;

  --transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html, body {
  min-height: 100vh;
  background-color: var(--bg-obsidian);
  background-image:
    radial-gradient(circle at 18% 12%, rgba(59, 130, 246, 0.16) 0%, transparent 42%),
    radial-gradient(circle at 82% 18%, rgba(139, 92, 246, 0.18) 0%, transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
    linear-gradient(180deg, #060811 0%, #0a0e1d 55%, #05070e 100%);
  background-attachment: fixed;
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", "Segoe UI", Roboto, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}

/* ==========================================================================
   DECORACIÓN NAVIDEÑA SHAMINKET (SOLO AZUL, MORADO Y BLANCO ESCARCHA)
   ========================================================================== */
.snow-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.snowflake {
  position: absolute;
  top: -16px;
  border-radius: 50%;
  pointer-events: none;
  animation: snowfall linear infinite;
}

@keyframes snowfall {
  0% {
    transform: translateY(-15px) translateX(0) rotate(0deg);
    opacity: 0;
  }
  15% {
    opacity: 0.85;
  }
  85% {
    opacity: 0.85;
  }
  100% {
    transform: translateY(105vh) translateX(28px) rotate(360deg);
    opacity: 0;
  }
}

/* Guirnalda de luces navideñas en la paleta Negro / Azul / Morado */
.christmas-garland {
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: 8px 16px 12px;
  border-bottom: 1px solid rgba(139, 92, 246, 0.18);
  position: relative;
  z-index: 2;
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.08) 0%, transparent 100%);
}

.bulb {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  position: relative;
  animation: twinkle 1.8s infinite alternate ease-in-out;
}

.bulb::before {
  content: "";
  position: absolute;
  top: -3px;
  left: 2.5px;
  width: 4px;
  height: 3px;
  background: rgba(255, 255, 255, 0.45);
  border-radius: 2px 2px 0 0;
}

.bulb.blue {
  background: var(--accent-blue);
  box-shadow: 0 0 12px 3px rgba(59, 130, 246, 0.85);
  animation-delay: 0s;
}

.bulb.purple {
  background: var(--accent-purple);
  box-shadow: 0 0 12px 3px rgba(139, 92, 246, 0.85);
  animation-delay: 0.45s;
}

.bulb.frost {
  background: var(--frost-white);
  box-shadow: 0 0 12px 3px rgba(224, 242, 254, 0.8);
  animation-delay: 0.9s;
}

.bulb.violet {
  background: #c084fc;
  box-shadow: 0 0 12px 3px rgba(192, 132, 252, 0.85);
  animation-delay: 1.35s;
}

@keyframes twinkle {
  0% {
    opacity: 0.35;
    transform: scale(0.85);
    filter: brightness(0.75);
  }
  100% {
    opacity: 1;
    transform: scale(1.22);
    filter: brightness(1.35);
  }
}

/* ==========================================================================
   ENCABEZADO MINIMALISTA SHAMINKET
   ========================================================================== */
header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(6, 8, 17, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  max-width: 920px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

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

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.15rem;
  color: #fff;
  box-shadow: 0 0 20px var(--accent-purple-glow);
  position: relative;
}

.brand-mark::after {
  content: "❄";
  position: absolute;
  top: -6px;
  right: -6px;
  font-size: 12px;
  background: var(--bg-obsidian);
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue-light);
}

.brand-text h1 {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, #ffffff 25%, var(--accent-blue-light) 65%, var(--accent-purple-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pill-btn {
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.pill-btn:hover {
  background: rgba(139, 92, 246, 0.25);
  border-color: var(--accent-purple);
  color: #fff;
  box-shadow: 0 0 14px var(--accent-purple-glow);
}

/* ==========================================================================
   CONTENEDOR PRINCIPAL ULTRA SIMPLE
   ========================================================================== */
main {
  max-width: 820px;
  margin: 0 auto;
  padding: 32px 20px 64px;
  position: relative;
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.hero-box {
  text-align: center;
  margin-bottom: 4px;
}

.winter-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: linear-gradient(90deg, rgba(59, 130, 246, 0.16), rgba(139, 92, 246, 0.18));
  border: 1px solid var(--border-subtle);
  color: var(--accent-purple-light);
  margin-bottom: 10px;
}

.hero-box h2 {
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.hero-box p {
  font-size: 0.94rem;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto;
}

/* ==========================================================================
   TARJETA DE ENTRADA (LINK DE PÁGINA O IMAGEN)
   ========================================================================== */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.55), 0 0 28px rgba(59, 130, 246, 0.08);
  transition: var(--transition);
}

.card-body {
  padding: 22px;
}

/* Selector de Modo: Página Web vs Imagen */
.mode-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  background: rgba(6, 8, 17, 0.65);
  padding: 5px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(139, 92, 246, 0.16);
  margin-bottom: 18px;
}

.mode-tab {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 700;
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}

.mode-tab.active {
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
  color: #ffffff;
  box-shadow: 0 4px 16px var(--accent-purple-glow);
}

/* Barra principal para pegar link */
.url-input-group {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

@media (max-width: 600px) {
  .url-input-group {
    flex-direction: column;
  }
}

.input-wrapper {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 14px;
  font-size: 1rem;
  color: var(--accent-blue-light);
  pointer-events: none;
}

.url-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 16px 14px 42px;
  color: var(--text-primary);
  font-size: 0.96rem;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}

.url-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.22);
}

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

.btn-cite {
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  padding: 14px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
  box-shadow: 0 6px 20px var(--accent-blue-glow);
  transition: var(--transition);
}

.btn-cite:hover {
  transform: translateY(-1px);
  filter: brightness(1.1);
  box-shadow: 0 8px 26px var(--accent-purple-glow);
}

.btn-cite:active {
  transform: scale(0.98);
}

/* Zona opcional para subir o pegar archivo de imagen directamente */
.image-dropzone {
  display: none;
  margin-top: 10px;
  margin-bottom: 12px;
  padding: 16px;
  border: 1.5px dashed rgba(139, 92, 246, 0.4);
  border-radius: var(--radius-md);
  background: rgba(139, 92, 246, 0.06);
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.image-dropzone.visible {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.image-dropzone:hover {
  border-color: var(--accent-blue-light);
  background: rgba(59, 130, 246, 0.1);
}

.dropzone-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.84rem;
  color: var(--text-secondary);
}

.image-preview-thumb {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--border-blue);
  display: none;
}

/* Botones de ejemplos rápidos y ajuste de datos */
.quick-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 6px;
}

.Quick-chips {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.chip-label {
  font-size: 0.76rem;
  color: var(--text-dim);
}

.chip {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: var(--transition);
}

.chip:hover {
  background: rgba(59, 130, 246, 0.18);
  color: #fff;
  border-color: var(--accent-blue);
}

.toggle-edit-btn {
  background: transparent;
  border: none;
  color: var(--accent-purple-light);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: var(--transition);
}

.toggle-edit-btn:hover {
  color: var(--accent-blue-light);
  text-decoration: underline;
}

/* Panel desplegable de edición rápida de metadatos */
.metadata-drawer {
  display: none;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(139, 92, 246, 0.18);
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.metadata-drawer.open {
  display: grid;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.field-group label {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.field-group input {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  color: var(--text-primary);
  font-size: 0.86rem;
  font-family: inherit;
  outline: none;
}

.field-group input:focus {
  border-color: var(--accent-purple);
}

/* ==========================================================================
   TARJETA DE RESULTADOS: APA 7 Y OTROS FORMATOS
   ========================================================================== */
.format-pills {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(139, 92, 246, 0.16);
  margin-bottom: 18px;
}

.format-pills::-webkit-scrollbar {
  display: none;
}

.format-btn {
  background: rgba(6, 8, 17, 0.6);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.format-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-blue);
}

.format-btn.active {
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 3px 12px var(--accent-blue-glow);
}

.badge-star {
  font-size: 0.68rem;
  background: rgba(255, 255, 255, 0.22);
  padding: 1px 6px;
  border-radius: var(--radius-pill);
}

/* Caja de la Referencia Generada */
.citation-result-box {
  background: rgba(6, 8, 17, 0.72);
  border: 1px solid var(--border-blue);
  border-left: 4px solid var(--accent-purple);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  margin-bottom: 16px;
  position: relative;
}

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

.result-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-blue-light);
  display: flex;
  align-items: center;
  gap: 6px;
}

.copy-btn {
  background: rgba(59, 130, 246, 0.16);
  border: 1px solid rgba(59, 130, 246, 0.4);
  color: #ffffff;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.copy-btn:hover {
  background: var(--accent-blue);
  box-shadow: 0 0 14px var(--accent-blue-glow);
}

.citation-output {
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--text-primary);
  padding-left: 28px;
  text-indent: -28px; /* Sangría francesa estándar académica */
  word-break: break-word;
}

/* Cita dentro del texto (Parentética y Narrativa) */
.intext-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 600px) {
  .intext-grid {
    grid-template-columns: 1fr;
  }
}

.intext-card {
  background: rgba(11, 15, 31, 0.75);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.intext-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.intext-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 700;
}

.intext-value {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--accent-purple-light);
}

.mini-copy-btn {
  background: rgba(139, 92, 246, 0.14);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 5px 10px;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.mini-copy-btn:hover {
  background: var(--accent-purple);
  color: #fff;
}

/* ==========================================================================
   HISTORIAL GUARDADO EN LA SESIÓN
   ========================================================================== */
.saved-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.saved-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.saved-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.saved-item {
  background: rgba(6, 8, 17, 0.55);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 0.86rem;
  color: var(--text-secondary);
}

.saved-item-text {
  flex: 1;
  word-break: break-word;
}

/* Pie de página */
footer {
  text-align: center;
  padding: 24px 16px;
  font-size: 0.78rem;
  color: var(--text-dim);
  border-top: 1px solid rgba(139, 92, 246, 0.14);
  position: relative;
  z-index: 5;
}

footer strong {
  color: var(--accent-purple-light);
}