/* ============================================
   NUBA Links Page - Static Stylesheet
   Mobile-first design
   ============================================ */

/* CSS Variables */
:root {
  --color-primary-terra: #935234;
  --color-terra-light: #b58d79;
  --color-white: #ffffff;
  --color-white-soft: rgba(255, 255, 255, 0.9);
  --color-overlay: rgba(0, 0, 0, 0.45);
  --color-btn-hover: rgba(255, 255, 255, 0.15);
  
  --font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  --border-radius: 50px;
  --transition: all 0.3s ease;
}

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

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

body {
  font-family: var(--font-family);
  color: var(--color-white);
  min-height: 100vh;
  min-height: 100dvh;
  background-image: url('../img/fondo-1.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  position: relative;
  overflow-x: hidden;
}

/* Background Overlay */
.background-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: 0;
  pointer-events: none;
}

/* Main Container */
.container {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-height: 100vh;
  min-height: 100dvh;
  padding: var(--spacing-lg) var(--spacing-sm);
  max-width: 400px;
  margin: 0 auto;
}

/* Language Selector Dropdown */
.lang-dropdown {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  z-index: 100;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--color-white);
  font-family: var(--font-family);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
}

.lang-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: var(--color-white);
}

.lang-current {
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.lang-chevron {
  transition: transform 0.2s ease;
}

.lang-dropdown.open .lang-chevron {
  transform: rotate(180deg);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 120px;
  background: rgba(30, 30, 30, 0.40);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.2s ease;
}

.lang-dropdown.open .lang-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  background: #93523470;
  backdrop-filter: blur(7px);
}

.lang-option {
  display: block;
  width: 100%;
  background: transparent;
  border: none;
  color: var(--color-white-soft);
  font-family: var(--font-family);
  font-size: 0.8rem;
  font-weight: 400;
  padding: 10px 12px;
  border-radius: 6px;
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}

.lang-option:hover {
  background: rgba(255, 255, 255, 0.1);
}

.lang-option.active {
  background: var(--color-white);
  color: var(--color-primary-terra);
  font-weight: 500;
}

/* Header - Logo & Slogan */
.header {
  text-align: center;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.logo {
  width: 200px;
  height: auto;
  margin-bottom: var(--spacing-sm);
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
}

.slogan {
  font-size: 0.8rem;
  font-weight: 300;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-white-soft);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

/* Schedule Section */
.schedule {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  backdrop-filter: blur(4px);
  width: 100%;
}

.schedule-icon {
  color: var(--color-white);
}

.schedule-icon svg {
  width: 28px;
  height: 28px;
}

.schedule-text {
  font-size: 1rem;
  font-weight: 400;
  text-align: center;
  color: var(--color-white-soft);
  line-height: 1.5;
}

/* Links Navigation */
.links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  width: 100%;
}

.link-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  width: 100%;
  min-height: 52px;
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(2px);
  border: 2px solid var(--color-white);
  border-radius: var(--border-radius);
  color: var(--color-white);
  font-family: var(--font-family);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}

.link-btn:hover,
.link-btn:focus {
  background: var(--color-btn-hover);
  border-color: var(--color-terra-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.link-btn:active {
  transform: translateY(0);
}

.link-btn svg {
  flex-shrink: 0;
}

.link-btn span {
  text-align: center;
}

/* Footer */
.footer {
  margin-top: auto;
  padding-top: var(--spacing-lg);
  text-align: center;
}

.footer p {
  font-size: 0.75rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 1px;
}

/* ============================================
   Responsive Adjustments
   ============================================ */

/* Small phones */
@media (max-width: 320px) {
  :root {
    font-size: 14px;
  }
  
  .logo {
    width: 200px;
  }
  
  .slogan {
    letter-spacing: 2px;
  }
}

/* Larger phones & small tablets */
@media (min-width: 480px) {
  .container {
    padding: var(--spacing-xl) var(--spacing-md);
  }
  
  .logo {
    width: 200px;
  }
  
  .slogan {
    font-size: 0.8rem;
    letter-spacing: 4px;
  }
  
  .link-btn {
    font-size: 1rem;
    min-height: 56px;
  }
}

/* Tablets & Desktop */
@media (min-width: 768px) {
  .container {
    max-width: 440px;
  }
  
  .lang-dropdown {
    top: var(--spacing-md);
    right: var(--spacing-md);
  }
  
  .header {
    margin-top: 4rem;
  }
  
  .logo {
    width: 200px;
  }
}

/* Landscape orientation on mobile */
@media (max-height: 500px) and (orientation: landscape) {
  .container {
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
  }
  
  .header {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
  }
  
  .logo {
    width: 200px;
  }
  
  .slogan {
    font-size: 0.8rem;
  }
  
  .schedule {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
  }
  
  .links {
    gap: var(--spacing-xs);
  }
  
  .link-btn {
    min-height: 44px;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  body {
    -webkit-font-smoothing: subpixel-antialiased;
  }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* Focus styles for accessibility */
.link-btn:focus-visible,
.lang-toggle:focus-visible,
.lang-option:focus-visible {
  outline: 2px solid var(--color-terra-light);
  outline-offset: 2px;
}