/* -------------------------------------------------------------
   VARIABLES GLOBALES
   ----------------------------------------------------------- */
:root {
  --color-bg: #0f1117;
  --color-surface: #1a1d27;
  --color-surface-2: #22263a;
  --color-accent: #4f8ef7;
  --color-accent-hover: #3a78e8;
  --color-text: #e8eaf0;
  --color-text-muted: #8b90a8;
  --color-border: #2e3349;
  --color-success: #34c77b;
  --color-warning: #f5a623;
  --color-danger: #e74c3c;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --transition: 0.25s ease;
  --font-main: 'Segoe UI', system-ui, sans-serif;
}


/* -------------------------------------------------------
   BASE
  -----------------------------------------------------*/
body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

/* -----------------------------------------------------------
   CONTENEDOR
   ------------------------------------------------------------ */
.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* ------------------------------------------------------------
   CABECERA
   ------------------------------------------------------------ */
.header {
  background:
    linear-gradient(135deg, rgba(26, 29, 39, 0.92) 0%, rgba(34, 40, 70, 0.92) 100%);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border-bottom: 1px solid var(--color-border);
  padding: 2rem 1rem;
  text-align: center;
  transition: background-image 0.4s ease;
}
 
.header__inner {
  max-width: 960px;
  margin: 0 auto;
}
 
.header__icon {
  font-size: 2.4rem;
  display: block;
  margin-bottom: 0.4rem;
}
 
.header__title {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--color-text);
}
 
.header__subtitle {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-top: 0.3rem;
}

/* ------------------------------------------------------------
   BOTÓN DE IDIOMA
   ------------------------------------------------------------ */
.lang-btn {
  margin-top: 1rem;
  padding: 0.45rem 1.1rem;
  background-color: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition);
}

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

/* -----------------------------------------------------------
   SELECTOR DE CIUDAD
   ----------------------------------------------------------- */
.selector-section {
  padding: 1.5rem 1rem;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
 
.selector-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
 
.city-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238b90a8' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  transition: border-color var(--transition);
}
 
.city-select:focus {
  outline: none;
  border-color: var(--color-accent);
}

/* -----------------------------------------------------------
   DASHBOARD PRINCIPAL
   ----------------------------------------------------------- */
.dashboard {
  flex: 1;
  padding: 1.5rem 0;
}
 
.dashboard .container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* -----------------------------------------------------------
   CARDS GENÉRICAS
   ----------------------------------------------------------- */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  animation: fadeIn 0.35s ease;
}
 
.card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1.2rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--color-border);
}

/* -----------------------------------------------------------
   CARD RESUMEN
   ------------------------------------------------------------ */
.summary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
 
.summary-item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  background-color: var(--color-surface-2);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
}
 
.summary-item__label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
 
.summary-item__value {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
}

/* -----------------------------------------------------------
   CARD METEOROLÓGICA
   ------------------------------------------------------------ */
.weather-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
 
.weather-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
  background-color: var(--color-surface-2);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
}
 
.weather-item__icon {
  font-size: 1.4rem;
}
 
.weather-item__label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
 
.weather-item__value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
}

/* ----------------------------------------------------------
   CARD CONVERSIÓN DE MONEDA
   --------------------------------------------------------- */
.currency-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 3rem;
}
 
.currency-label {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}
 
.currency-input {
  padding: 0.75rem 1rem;
  background-color: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 2rem;
  width: 100%;
  transition: border-color var(--transition);
}
 
.currency-input:focus {
  outline: none;
  border-color: var(--color-accent);
}
 
.convert-btn {
  padding: 0.75rem 1.5rem;
  background-color: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition), transform var(--transition);
}
 
.convert-btn:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
}
 
.convert-btn:active {
  transform: translateY(0);
}
 
.currency-result {
  background-color: var(--color-surface-2);
  border-radius: var(--radius-sm);
  padding: 1rem;
  margin-top: 0.5rem;
}
 
.currency-result__line {
  font-size: 1.1rem;
  color: var(--color-text);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}
 
.currency-result__line strong {
  color: var(--color-success);
  font-size: 1.3rem;
}

/* -------------------------------------------------------------
   CARD RECOMENDACIÓN DE VIAJE
   ------------------------------------------------------------ */
.travel-tip {
  font-size: 1rem;
  color: var(--color-text);
  background-color: var(--color-surface-2);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 1rem 1.2rem;
  line-height: 1.7;
}

.travel-tip {
  white-space: pre-line;
}

/* --------------------------------------------------------------
   ESTADOS: loading, error, hidden
   -------------------------------------------------------------- */
.hidden {
  display: none !important;
}
 
.loading-msg {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  padding: 0.5rem 0;
  animation: pulse 1.5s ease-in-out infinite;
}
 
.error-msg {
  color: var(--color-danger);
  font-size: 0.9rem;
  padding: 0.5rem 0;
}
 
/* ----------------------------------------------------------
   PIE DE PÁGINA
   --------------------------------------------------------- */
.footer {
  text-align: center;
  padding: 1.2rem 1rem;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
  margin-top: auto;
}
 
/* --------------------------------------------------------------
   ANIMACIONES
   -------------------------------------------------------------- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
 
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}
 
/* -----------------------------------------------------------
   RESPONSIVE — Tablet y Desktop
   ----------------------------------------------------------- */
@media (min-width: 600px) {
  .header__title {
    font-size: 2.2rem;
  }
 
  .city-select {
    max-width: 400px;
  }
 
  .currency-form {
    flex-direction: row;
    align-items: flex-end;
  }
 
  .currency-input {
    flex: 1;
  }
 
  .convert-btn {
    white-space: nowrap;
  }
}
 
@media (min-width: 768px) {
  .container {
    padding: 0 2rem;
  }
 
  .header {
    padding: 2.5rem 2rem;
  }
 
  .selector-section {
    padding: 1.5rem 2rem;
  }
 
  .dashboard {
    padding: 2rem 0;
  }
 
  .dashboard .container {
    gap: 1.5rem;
  }
 
  .summary-grid {
    grid-template-columns: repeat(4, 1fr);
  }
 
  .weather-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}