/**
 * Estructura de diseño, contenedores y grilla responsiva de Nimbus.
 */

.app-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}

.app-container {
  width: 100%;
  max-width: 1360px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  box-sizing: border-box;
  overflow-x: clip;
}

@media (max-width: 768px) {
  .app-container {
    padding: 1.15rem 1rem 3rem;
    gap: 1.35rem;
  }
}

/* Barra de cabecera */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 0.35rem 0;
}

@media (max-width: 580px) {
  .app-header {
    flex-wrap: wrap;
    gap: 0.9rem;
  }
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.95rem;
  cursor: pointer;
  user-select: none;
}

.brand-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.25), rgba(129, 140, 248, 0.35));
  border: 1px solid var(--color-border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  box-shadow: var(--shadow-sm), 0 0 20px rgba(56, 189, 248, 0.2);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  flex-shrink: 0;
}

.header-brand:hover .brand-icon {
  transform: scale(1.05);
  box-shadow: var(--shadow-sm), 0 0 25px rgba(56, 189, 248, 0.35);
}

.brand-icon .svg-icon {
  width: 26px;
  height: 26px;
}

.brand-title {
  font-size: 1.65rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #ffffff 30%, #bae6fd 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.15;
}

body.mode-light .brand-title {
  background: linear-gradient(135deg, #0f172a 30%, #0284c7 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tagline {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-weight: 700;
  margin-top: 2px;
}

@media (max-width: 480px) {
  .brand-title {
    font-size: 1.35rem;
  }
  .brand-tagline {
    font-size: 0.72rem;
  }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

/* Área de búsqueda y favoritos */
.app-search-area {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
}

/* Cuadrícula principal de clima */
.weather-main-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  width: 100%;
  min-width: 0;
}

.weather-main-layout > * {
  min-width: 0;
  max-width: 100%;
}

/* En pantallas amplias (>= 1100px), activar cuadrícula balanceada 2x2 */
@media (min-width: 1100px) {
  .weather-main-layout {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    grid-template-areas:
      "hero daily"
      "chart metrics";
    align-items: stretch;
    gap: 1.75rem;
  }

  .grid-area-hero {
    grid-area: hero;
    display: flex;
    flex-direction: column;
    min-width: 0;
  }

  .grid-area-daily {
    grid-area: daily;
    display: flex;
    flex-direction: column;
    min-width: 0;
  }

  .grid-area-chart {
    grid-area: chart;
    display: flex;
    flex-direction: column;
    min-width: 0;
  }

  .grid-area-metrics {
    grid-area: metrics;
    display: flex;
    flex-direction: column;
    min-width: 0;
  }

  .grid-area-hero > section,
  .grid-area-daily > section,
  .grid-area-chart > section,
  .grid-area-metrics > section {
    height: 100%;
  }
}

/* En pantallas medianas o ventanas redimensionadas (< 1100px), orden fluido en 1 columna */
@media (max-width: 1099px) {
  .grid-area-hero { order: 1; }
  .grid-area-chart { order: 2; }
  .grid-area-daily { order: 3; }
  .grid-area-metrics { order: 4; }
}

/* Superficie de tarjeta estándar con alto relieve */
.card-surface {
  background: var(--color-bg-surface);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-md);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-fast);
  animation: cardPop 0.35s cubic-bezier(0.16, 1, 0.3, 1) backwards;
  box-sizing: border-box;
  min-width: 0;
  max-width: 100%;
}

@media (max-width: 640px) {
  .card-surface {
    padding: 1.3rem;
    border-radius: var(--radius-lg);
  }
}

.card-surface:hover {
  border-color: var(--color-border-hover);
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1.35rem;
}

.section-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--color-text-primary);
}

.section-icon {
  color: var(--color-primary);
  display: flex;
  align-items: center;
}

.section-icon .svg-icon {
  width: 20px;
  height: 20px;
}

.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.section-subtitle {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* Pie de página */
.app-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  padding: 1.75rem 1.25rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.45rem;
}

.footer-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
}

.footer-link:hover {
  text-decoration: underline;
}