/* =====================================================
   GTA — Gestión de Turnos para Aeropuertos
   Estilos globales
   ===================================================== */

/* --- Variables --- */
:root {
  --bg-main:       #0f1923;
  --bg-card:       #1a2635;
  --bg-card-alt:   #162030;
  --bg-nav:        #0b1420;
  --text-main:     #e8edf2;
  --text-muted:    #8a9bae;
  --text-dark:     #0f1923;
  --accent:        #0099cc;
  --accent-hover:  #007aaa;
  --accent-light:  rgba(0, 153, 204, 0.15);
  --success:       #2ecc71;
  --warning:       #e67e22;
  --border:        rgba(255, 255, 255, 0.08);
  --shadow:        0 4px 24px rgba(0, 0, 0, 0.4);
  --radius:        10px;
  --radius-sm:     6px;
  --nav-height:    64px;
  --font:          'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono:     'Roboto Mono', 'Consolas', monospace;
  --transition:    0.2s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-hover);
}

ul {
  list-style: none;
}

/* --- Tipografía --- */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
h4 { font-size: 1rem; }

p {
  line-height: 1.75;
  color: var(--text-main);
}

.text-muted {
  color: var(--text-muted);
}

.text-accent {
  color: var(--accent);
}

/* --- Layout --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.page-content {
  padding-top: var(--nav-height);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.section {
  padding: 64px 0;
  flex: 1;
}

.section-sm {
  padding: 40px 0;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.two-col-centered {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

/* --- Navegación --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background-color: var(--bg-nav);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  backdrop-filter: blur(8px);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background-color var(--transition);
}

.nav-links a:hover {
  color: var(--text-main);
  background-color: var(--accent-light);
}

.nav-links a.active {
  color: var(--accent);
  background-color: var(--accent-light);
}

.nav-cta {
  background-color: var(--accent) !important;
  color: #fff !important;
  padding: 7px 16px !important;
  border-radius: var(--radius-sm) !important;
}

.nav-cta:hover {
  background-color: var(--accent-hover) !important;
}

/* Hamburguesa */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition);
}

/* --- Botones --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-decoration: none;
  line-height: 1;
}

.btn-primary {
  background-color: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

.btn-outline {
  background-color: transparent;
  color: var(--text-main);
  border-color: var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-ghost {
  background-color: transparent;
  color: var(--accent);
  border-color: transparent;
  padding-left: 0;
}

.btn-ghost:hover {
  color: var(--accent-hover);
}

.btn-lg {
  padding: 15px 32px;
  font-size: 1rem;
}

/* --- Tarjetas --- */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color var(--transition), transform var(--transition);
}

.card:hover {
  border-color: rgba(0, 153, 204, 0.3);
  transform: translateY(-2px);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  display: block;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}

.card-text {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Grid de módulos */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* --- Caja destacada (quote/callout) --- */
.callout {
  background-color: var(--accent-light);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
  margin: 20px 0;
}

.callout p {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-main);
  margin: 0;
}

/* --- Lista de puntos con icono --- */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 16px 0;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--text-main);
}

.feature-list li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

/* --- Lista de perfiles (iconos reales) --- */
.profile-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.profile-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.profile-item-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.profile-item-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --- Tabs --- */
.tabs {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.tab-nav {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
  overflow-x: auto;
  scrollbar-width: none;
}

.tab-nav::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  padding: 10px 20px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  margin-bottom: -1px;
  font-family: var(--font);
}

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

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-panel {
  display: none;
  animation: fadeIn 0.2s ease;
}

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

/* Subtabs (más pequeños) */
.subtab-nav {
  display: flex;
  gap: 4px;
  background-color: var(--bg-card-alt);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.subtab-btn {
  padding: 6px 14px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
  white-space: nowrap;
}

.subtab-btn:hover {
  color: var(--text-main);
}

.subtab-btn.active {
  background-color: var(--accent);
  color: #fff;
}

.subtab-panel {
  display: none;
  animation: fadeIn 0.2s ease;
}

.subtab-panel.active {
  display: block;
}

/* --- Divisor --- */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 48px 0;
}

/* --- Etiqueta de sección --- */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

/* --- Tabla --- */
.styled-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.styled-table th {
  text-align: left;
  padding: 10px 16px;
  background-color: var(--bg-card-alt);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}

.styled-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-main);
  vertical-align: top;
}

.styled-table td:first-child {
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
}

.styled-table tr:last-child td {
  border-bottom: none;
}

.styled-table tr:hover td {
  background-color: var(--accent-light);
}

/* --- Diagrama de arquitectura --- */
.arch-diagram {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  line-height: 1.8;
  color: var(--text-muted);
  white-space: pre;
  overflow-x: auto;
}

.arch-layer {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  text-align: center;
  position: relative;
}

.arch-layer-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 4px;
}

.arch-layer-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.arch-arrow {
  text-align: center;
  color: var(--accent);
  font-size: 1.2rem;
  padding: 4px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.arch-arrow-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* --- Screenshot cards --- */
.screenshot {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  width: 100%;
}

.screenshot-caption {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 8px;
  font-style: italic;
}

/* Placeholder para screenshots */
.screenshot-placeholder {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card-alt) 100%);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  aspect-ratio: 16/9;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-muted);
}

.screenshot-placeholder-icon {
  font-size: 2rem;
  opacity: 0.4;
}

.screenshot-placeholder-text {
  font-size: 0.8rem;
  opacity: 0.5;
}

/* --- Número / stat destacado --- */
.stat-box {
  background-color: var(--accent-light);
  border: 1px solid rgba(0, 153, 204, 0.3);
  border-radius: var(--radius);
  padding: 20px 24px;
  text-align: center;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* --- Footer de página --- */
.page-footer {
  padding: 20px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- Animaciones --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* --- Responsive --- */
@media (max-width: 1023px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  :root {
    --nav-height: 56px;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: var(--bg-nav);
    border-bottom: 1px solid var(--border);
    padding: 16px;
    gap: 4px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    width: 100%;
    padding: 10px 14px;
  }

  .nav-toggle {
    display: flex;
  }

  .two-col,
  .two-col-centered {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 40px 0;
  }

  .btn-lg {
    padding: 12px 24px;
    font-size: 0.9375rem;
  }
}

@media (max-width: 480px) {
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .tab-nav {
    gap: 2px;
  }

  .tab-btn {
    padding: 8px 14px;
    font-size: 0.875rem;
  }
}