/* =========================================
   VARIABLES & THEME CONFIGURATION
   ========================================= */
:root {
  /* Tipografía */
  --font-main: "Inter", system-ui, -apple-system, sans-serif;

  /* Paleta de Colores - Modo Claro (Default) */
  --color-bg: #f5f7fa;
  --color-surface: rgba(255, 255, 255, 0.7);
  --color-surface-hover: rgba(255, 255, 255, 0.9);
  --color-text-primary: #1f2937;
  --color-text-secondary: #6b7280;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-accent: #8b5cf6;
  --color-border: rgba(0, 0, 0, 0.08);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --glass-blur: 12px;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
}

[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-surface: rgba(30, 41, 59, 0.7);
  --color-surface-hover: rgba(30, 41, 59, 0.9);
  --color-text-primary: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-primary: #3b82f6;
  --color-primary-hover: #60a5fa;
  --color-border: rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

/* =========================================
   RESET & BASE STYLES
   ========================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.5;
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  text-decoration: none;
  color: inherit;
}

button,
input {
  font-family: inherit;
  border: none;
  outline: none;
}

ul {
  list-style: none;
}

/* =========================================
   LAYOUT UTILITIES
   ========================================= */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

.d-flex {
  display: flex;
}
.align-center {
  align-items: center;
}
.justify-between {
  justify-content: space-between;
}
.justify-center {
  justify-content: center;
}
.gap-sm {
  gap: var(--spacing-sm);
}
.gap-md {
  gap: var(--spacing-md);
}

/* =========================================
   HEADER
   ========================================= */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: var(--spacing-md) 0;
  background: var(--color-surface);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--color-border);
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-accent)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.theme-toggle {
  background: transparent;
  color: var(--color-text-primary);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}

.theme-toggle:hover {
  background: rgba(125, 125, 125, 0.1);
}

/* =========================================
   HERO
   ========================================= */
.hero {
  text-align: center;
  padding: 4rem 0 2rem;
  background: radial-gradient(
      circle at top right,
      rgba(37, 99, 235, 0.1),
      transparent 40%
    ),
    radial-gradient(
      circle at bottom left,
      rgba(139, 92, 246, 0.1),
      transparent 40%
    );
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.hero p {
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  font-size: 1.125rem;
}

/* =========================================
   SEARCH & FILTER
   ========================================= */
.controls-bar {
  margin-bottom: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.search-input-wrapper {
  position: relative;
  flex-grow: 1;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-secondary);
}

.search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 3rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  font-size: 1rem;
  transition: all 0.2s border-color ease, box-shadow 0.2s ease;
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.filter-group {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.2s;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

@media (min-width: 768px) {
  .controls-bar {
    flex-direction: row;
    align-items: center;
  }
}

/* =========================================
   ISO GRID & CARDS
   ========================================= */
.iso-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.iso-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.iso-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  background: var(--color-surface-hover);
}

.iso-header {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.iso-icon {
  width: 48px;
  height: 48px;
  background: rgba(37, 99, 235, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.iso-title h3 {
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.iso-version {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  background: rgba(0, 0, 0, 0.05);
  padding: 2px 8px;
  border-radius: 4px;
}

[data-theme="dark"] .iso-version {
  background: rgba(255, 255, 255, 0.1);
}

.iso-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.iso-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
  flex-grow: 1;
}

.tag {
  font-size: 0.75rem;
  padding: 0.125rem 0.5rem;
  border-radius: 1rem;
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.iso-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: auto;
}

.btn {
  padding: 0.625rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.2s;
  font-size: 0.9375rem;
  text-align: center;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  width: 100%;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
}

.btn-outline:hover {
  border-color: var(--color-text-secondary);
  background: rgba(125, 125, 125, 0.05);
}

/* =========================================
   MODAL
   ========================================= */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-bg);
  width: 90%;
  max-width: 600px;
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.modal-overlay.open .modal {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: transparent;
  cursor: pointer;
  color: var(--color-text-secondary);
  padding: 0.5rem;
  border-radius: 50%;
}

.modal-close:hover {
  background: rgba(125, 125, 125, 0.1);
}

.modal-hash-box {
  background: rgba(125, 125, 125, 0.1);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-family: monospace;
  word-break: break-all;
  margin: var(--spacing-md) 0;
  position: relative;
  font-size: 0.875rem;
  cursor: pointer;
}

.modal-hash-box:hover::after {
  content: "Copiar";
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-main);
  background: var(--color-surface);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
  box-shadow: var(--shadow-sm);
}

/* =========================================
   FOOTER
   ========================================= */
.footer {
  margin-top: auto;
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

/* =========================================
   UTILITIES & ANIMATIONS
   ========================================= */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-text-primary);
  color: var(--color-bg);
  padding: 0.75rem 1.5rem;
  border-radius: 2rem;
  box-shadow: var(--shadow-md);
  z-index: 200;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.skeleton {
  background: linear-gradient(
    90deg,
    rgba(190, 190, 190, 0.2) 25%,
    rgba(129, 129, 129, 0.24) 37%,
    rgba(190, 190, 190, 0.2) 63%
  );
  background-size: 400% 100%;
  animation: skeleton-loading 1.4s ease infinite;
  border-radius: 4px;
}

@keyframes skeleton-loading {
  0% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0 50%;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.4s ease forwards;
}