/* ============================================
   BILBAO UNDERGROUND - REDESIGN
   Neo-Grotesque Brutalist Aesthetic
   ============================================ */

/* --------------------------------------------
   CSS VARIABLES
   -------------------------------------------- */
:root {
  /* Colores base */
  --bg-main: #EDEDF4;
  --bg-sidebar: rgba(109, 138, 150, 0.15);
  --text-main: #272D2D;
  --text-secondary: #6D8A96;
  --accent-coral: #E26D5C;
  --accent-mint: #00CC99;
  --black: #272D2D;
  --white: #FFFFFF;

  /* Tipografía */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Darker Grotesque', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Espaciado */
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  /* Reference unit based on RANDOM button */
  --space-lg: 24px;
  --space-xl: 40px;
  --space-xxl: 64px;

  /* Bordes */
  --border-thin: 1px solid var(--black);
  --border-normal: 2px solid var(--black);
  --border-thick: 3px solid var(--black);

  /* Sombras */
  --shadow-sm: 3px 3px 0 var(--black);
  --shadow-md: 4px 4px 0 var(--black);
  --shadow-lg: 6px 6px 0 var(--black);
  --shadow-xl: 8px 8px 0 var(--black);
}

/* --------------------------------------------
   RESET
   -------------------------------------------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* --------------------------------------------
   TEXTURA DE FONDO (GRANO)
   -------------------------------------------- */
.grain-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="300" height="300"><filter id="n"><feTurbulence baseFrequency="0.9" numOctaves="3"/></filter><rect width="300" height="300" filter="url(%23n)" opacity="0.03"/></svg>');
  pointer-events: none;
  z-index: 9999;
  mix-blend-mode: multiply;
}

/* --------------------------------------------
   HEADER
   -------------------------------------------- */
.main-header {
  width: 100%;
  padding: var(--space-lg) var(--space-lg);
  border-bottom: 3px solid var(--black);
  background: var(--white);
  position: relative;
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
}

.site-title {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: var(--space-sm);
  position: relative;
  display: inline-block;
  transform: rotate(-0.5deg);
}

/* Efecto glitch sutil */
.site-title::after {
  content: attr(data-text);
  position: absolute;
  left: 2px;
  top: 0;
  color: var(--accent-mint);
  opacity: 0.25;
  z-index: -1;
  clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
}

.site-subtitle {
  font-family: var(--font-body);
  font-size: 18px;
  color: var(--text-secondary);
  font-weight: 400;
  transform: rotate(0.3deg);
  display: inline-block;
}

/* --------------------------------------------
   LOADING SCREEN
   -------------------------------------------- */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-main);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.3s, visibility 0.3s;
}

.loading-screen.loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-content {
  text-align: center;
  transform: rotate(-1deg);
}

.loading-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-main);
  margin-bottom: var(--space-md);
}

.loading-text {
  font-family: var(--font-body);
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.loading-bar {
  width: 300px;
  height: 8px;
  background: var(--white);
  border: 2px solid var(--black);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin: 0 auto;
}

.loading-progress {
  height: 100%;
  width: 0;
  background: var(--accent-coral);
  animation: loading 1.5s ease-in-out forwards;
}

@keyframes loading {
  to {
    width: 100%;
  }
}

/* --------------------------------------------
   MAIN CONTAINER
   -------------------------------------------- */
.main-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-lg);
  display: none;
}

.main-container.active {
  display: block;
}

/* --------------------------------------------
   STATS SECTION
   -------------------------------------------- */
.stats-section {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.stat-card {
  background: var(--white);
  border: 2px solid var(--black);
  padding: var(--space-md);
  /* Reduced from space-lg space-md */
  text-align: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all 0.2s ease-out;
  position: relative;
}

.stat-card:nth-child(1) {
  transform: rotate(-0.5deg);
}

.stat-card:nth-child(2) {
  transform: rotate(0.3deg);
}

.stat-card:nth-child(3) {
  transform: rotate(-0.2deg);
}

.stat-card:nth-child(4) {
  transform: rotate(0.4deg);
}

.stat-card:hover {
  transform: rotate(0deg) translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-coral);
}

.stat-card.active {
  background: var(--accent-mint);
  border-color: var(--black);
  transform: rotate(0deg);
  box-shadow: var(--shadow-lg);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.stat-card.active .stat-label {
  color: var(--text-main);
}

/* --------------------------------------------
   SEARCH SECTION
   -------------------------------------------- */
.search-section {
  margin-bottom: var(--space-xl);
}

.search-wrapper {
  display: flex;
  gap: var(--space-md);
  align-items: stretch;
}

.search-input {
  flex: 1;
  font-family: var(--font-body);
  font-size: 18px;
  padding: var(--space-md) var(--space-lg);
  background: var(--white);
  border: 2px solid var(--black);
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
  transform: rotate(-0.2deg);
  transition: all 0.2s ease-out;
}

.search-input::placeholder {
  color: var(--text-secondary);
  opacity: 0.8;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-coral);
  box-shadow: var(--shadow-md);
  transform: rotate(0deg);
}

/* Random Button System */
.random-wrapper {
  position: relative;
  z-index: 10;
  transform: rotate(2deg);
  font-family: var(--font-display);
  min-width: 200px;

  /* Base Flex behavior */
  display: flex;
  width: 100%;
}

.random-btn-main {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  padding: var(--space-md) var(--space-lg);
  background: var(--accent-coral);
  color: var(--white);
  border: 3px solid var(--black);
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: all 0.2s ease-out;
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
}

.sub-button {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  padding: 8px 16px;
  background: var(--accent-coral);
  border: 3px solid var(--black);
  color: var(--white);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  line-height: 1;
}

/* BREAKPOINT 1: Web & Tablet (> 600px) - Horizontal Layout */
@media (min-width: 601px) {
  .random-wrapper {
    flex-direction: row;
    align-items: stretch;
    gap: 16px;
    width: auto;
    margin-left: auto;
    /* Right alignment */
  }

  .sub-button {
    flex: 0 0 60px;
    /* Compact */
    min-width: 60px;
    padding: 0;
  }

  .random-btn-main {
    flex: 0 1 auto;
    /* Adapts to content */
    min-width: 160px;
  }

  .sub-button.back {
    order: 1;
  }

  .random-btn-main {
    order: 2;
  }

  .sub-button.reset {
    order: 3;
  }
}

/* BREAKPOINT 2: Mobile (< 600px) - Stacked Layout */
@media (max-width: 600px) {
  .random-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    transform: rotate(0deg);
  }

  .random-btn-main {
    grid-column: 1 / -1;
    width: 100%;
    order: -1;
    padding: 16px 12px;
  }

  .sub-button {
    width: 100%;
    padding: 16px 12px;
  }
}

/* Shared Interaction States */
.random-btn-main:hover,
.sub-button:hover {
  background: var(--accent-mint);
  color: var(--black);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.random-btn-main:active,
.sub-button:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.list-item,
.related-album,
.stat-card {
  animation: fadeInUp 0.4s ease-out backwards;
}

.list-item:nth-child(1) {
  animation-delay: 0.05s;
}

.list-item:nth-child(2) {
  animation-delay: 0.1s;
}

.list-item:nth-child(3) {
  animation-delay: 0.15s;
}

.list-item:nth-child(4) {
  animation-delay: 0.2s;
}

.list-item:nth-child(5) {
  animation-delay: 0.25s;
}

/* --------------------------------------------
   SEARCH RESULTS (GLOBAL)
   -------------------------------------------- */
.search-results-global {
  display: none;
  background: var(--white);
  border: 3px solid var(--black);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--space-lg);
  max-height: 70vh;
  overflow-y: auto;
  transform: rotate(-0.3deg);
}

.search-results-global.active {
  display: block;
}

.search-category {
  border-bottom: 2px solid var(--black);
  padding: var(--space-lg);
}

.search-category:last-child {
  border-bottom: none;
}

.search-category-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-main);
  margin-bottom: var(--space-md);
}

.search-category-count {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--text-secondary);
  margin-left: var(--space-sm);
}

.search-result-item {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease-out;
  font-family: var(--font-mono);
  font-size: 16px;
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item:hover {
  background: var(--accent-coral);
  color: var(--white);
  padding-left: var(--space-lg);
  transform: translateX(4px);
}

.search-no-results {
  padding: var(--space-xl);
  text-align: center;
  font-family: var(--font-body);
  font-size: 18px;
  color: var(--text-secondary);
}

.show-more-btn {
  width: 100%;
  padding: var(--space-md);
  margin-top: var(--space-md);
  background: var(--accent-coral);
  border: 3px solid var(--black);
  color: var(--white);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease-out;
  text-transform: uppercase;
  box-shadow: var(--shadow-md);
  transform: rotate(-0.5deg);
}

.show-more-btn:hover {
  background: var(--accent-mint);
  color: var(--black);
  box-shadow: var(--shadow-lg);
  transform: rotate(0deg) translateY(-2px);
}

/* --------------------------------------------
   CONTENT WRAPPER
   -------------------------------------------- */
.content-wrapper {
  display: grid;
  grid-template-columns: minmax(250px, 320px) 1fr;
  /* Responsive width */
  gap: var(--space-lg);
  /* Reduced gap */
  align-items: start;
}

/* --------------------------------------------
   SIDEBAR
   -------------------------------------------- */
.sidebar {
  background: var(--bg-sidebar);
  border: 3px solid var(--black);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: var(--space-md);
  max-height: calc(100vh - var(--space-lg));
  /* Better sticky height handling */
  overflow-y: auto;
  transform: rotate(-0.5deg);
}

.sidebar-header {
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--black);
}

.sidebar-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-main);
  margin-bottom: var(--space-xs);
}

.sidebar-count {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-secondary);
}



.list-item {
  padding: var(--space-sm) var(--space-md);
  margin-bottom: var(--space-xs);
  cursor: pointer;
  transition: all 0.15s ease-out;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--text-main);
  border-left: 3px solid transparent;
}

.list-item:hover {
  border-left: 3px solid var(--accent-coral);
  background: rgba(226, 109, 92, 0.08);
  padding-left: var(--space-lg);
  transform: translateX(4px);
}

/* Scrollbar personalizado */
.sidebar::-webkit-scrollbar {
  width: 8px;
}

.sidebar::-webkit-scrollbar-track {
  background: var(--bg-main);
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--text-secondary);
  border: 1px solid var(--black);
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--accent-coral);
}

/* --------------------------------------------
   DETAIL AREA
   -------------------------------------------- */
.detail-area {
  background: var(--white);
  border: 3px solid var(--black);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
  min-height: 600px;
  transform: rotate(0.3deg);
}

/* Empty state */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 500px;
  text-align: center;
}

.empty-text {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: var(--space-sm);
  transform: rotate(-1deg);
}

.large-random-btn {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  padding: 16px 32px;
  background: var(--accent-coral);
  color: var(--white);
  border: 3px solid var(--black);
  cursor: pointer;
  box-shadow: 6px 6px 0 var(--black);
  transition: all 0.2s ease-out;
  margin-top: var(--space-md);
  transform: rotate(-1deg);
}

.large-random-btn:hover {
  background: var(--accent-mint);
  color: var(--black);
  transform: rotate(-1deg) translateY(-2px);
  box-shadow: 8px 8px 0 var(--black);
}

.large-random-btn:active {
  transform: rotate(-1deg) translateY(0);
  box-shadow: 2px 2px 0 var(--black);
}

/* Album detail */
.album-title {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-main);
  margin-bottom: var(--space-sm);
  transform: rotate(-0.5deg);
  display: inline-block;
}

.album-artist {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.album-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.meta-item {
  background: var(--bg-main);
  border: 2px solid var(--black);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.meta-item:nth-child(odd) {
  transform: rotate(-0.3deg);
}

.meta-item:nth-child(even) {
  transform: rotate(0.2deg);
}

.meta-label {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xs);
}

.meta-value {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
}

/* Section headers */
.section-title {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-main);
  border-bottom: 4px solid var(--black);
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-lg);
  margin-top: var(--space-xl);
  display: inline-block;
  transform: rotate(-0.5deg);
}

.section-title.coral-accent {
  border-bottom-color: var(--accent-coral);
}

.section-title.mint-accent {
  border-bottom-color: var(--accent-mint);
}

/* Tags */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  padding: var(--space-xs) var(--space-sm);
  /* Compact padding */
  background: var(--bg-main);
  border: 2px solid var(--black);
  color: var(--text-main);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all 0.15s ease-out;
}

.tag:nth-child(odd) {
  transform: rotate(-1deg);
}

.tag:nth-child(even) {
  transform: rotate(0.5deg);
}

.tag:hover {
  background: var(--accent-coral);
  color: var(--white);
  transform: rotate(0deg) scale(1.05);
  box-shadow: var(--shadow-md);
}

/* Bandcamp button */
.bandcamp-btn {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  padding: var(--space-md) var(--space-xl);
  background: var(--accent-coral);
  color: var(--white);
  border: 3px solid var(--black);
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  margin-top: var(--space-lg);
  transform: rotate(1deg);
  transition: all 0.2s ease-out;
}

.bandcamp-btn:hover {
  background: var(--accent-mint);
  color: var(--black);
  transform: rotate(-1deg) translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* Related section */
.related-section {
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 3px solid var(--black);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.related-album {
  background: var(--bg-main);
  border: 2px solid var(--black);
  padding: var(--space-md);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all 0.15s ease-out;
}

.related-album:nth-child(3n+1) {
  transform: rotate(-0.3deg);
}

.related-album:nth-child(3n+2) {
  transform: rotate(0.2deg);
}

.related-album:nth-child(3n+3) {
  transform: rotate(-0.1deg);
}

.related-album:hover {
  border-color: var(--accent-coral);
  box-shadow: var(--shadow-md);
  transform: rotate(0deg) translateY(-3px);
}

.related-album-title {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: var(--space-xs);
  line-height: 1.3;
}

.related-album-artist {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-secondary);
}

/* Artist header */
.artist-header {
  margin-bottom: var(--space-xl);
}

.artist-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

/* --------------------------------------------
   RESPONSIVE
   -------------------------------------------- */
@media (max-width: 1200px) {
  .content-wrapper {
    grid-template-columns: 250px 1fr;
  }
}

@media (max-width: 900px) {
  .stats-section {
    grid-template-columns: repeat(2, 1fr);
    /* 2x2 grid for mobile */
  }

  .content-wrapper {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  /* Mobile Centering Fixes */
  .tag-cloud,
  .related-grid,
  .artist-meta-grid {
    justify-content: center;
  }

  .related-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    /* Ensure better centering */
  }

  .sidebar {
    position: relative;
    top: 0;
    max-height: 60vh;
    /* Fix overflow */
    overflow-y: auto;
    transform: rotate(0deg);
  }

  .list-item {
    font-size: 15px;
    padding: 12px;
  }

  .detail-area {
    transform: rotate(0deg);
  }
}

@media (max-width: 600px) {
  .site-title {
    font-size: 32px;
  }

  .stats-section {
    grid-template-columns: 1fr;
  }

  .search-wrapper {
    flex-direction: column;
  }



  .main-container {
    padding: var(--space-md);
  }
}