/* ============================================
   PREMIUM SWISS SPA DESIGN SYSTEM
   Minimalist, High-End, Professional
   ============================================ */

/* ============================================
   COLOR PALETTE - Restrained & Cohesive
   ============================================ */
:root {
  /* Primary Colors - Monochrome Foundation */
  --color-black: #000000;
  --color-white: #ffffff;
  --color-gray-50: #fafafa;
  --color-gray-100: #f5f5f5;
  --color-gray-200: #e5e5e5;
  --color-gray-300: #d4d4d4;
  --color-gray-400: #a3a3a3;
  --color-gray-500: #737373;
  --color-gray-600: #525252;
  --color-gray-700: #404040;
  --color-gray-800: #262626;
  --color-gray-900: #171717;
  
  /* Accent Colors - Minimal & Refined */
  --color-accent-primary: #58d8fb;
  --color-accent-secondary: #be6aef;
  --color-accent-subtle: rgba(88, 216, 251, 0.1);
  
  /* Spacing System - Perfect Balance */
  --spacing-xs: 0.5rem;    /* 8px */
  --spacing-sm: 0.75rem;   /* 12px */
  --spacing-md: 1rem;      /* 16px */
  --spacing-lg: 1.5rem;    /* 24px */
  --spacing-xl: 2rem;      /* 32px */
  --spacing-2xl: 3rem;     /* 48px */
  --spacing-3xl: 4rem;     /* 64px */
  --spacing-4xl: 6rem;     /* 96px */
  --spacing-5xl: 8rem;     /* 128px */
  
  /* Typography */
  --font-primary: 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Google Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   BASE RESET & FOUNDATION
   ============================================ */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-black);
  color: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ============================================
   TYPOGRAPHY - Refined & Elegant
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0;
}

.title.is-3 {
  font-size: 2.25rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  margin-bottom: var(--spacing-xl);
  color: var(--color-white);
}

.title.is-4 {
  font-size: 1.75rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-lg);
  color: var(--color-white);
}

.content {
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--color-gray-300);
  font-weight: 400;
}

.content p {
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-300);
  font-size: 1.125rem;
  font-weight: 400;
}

.content strong,
.content b {
  font-weight: 600;
  color: var(--color-white);
}

/* ============================================
   SPACING SYSTEM - Perfect Balance
   ============================================ */
.section {
  padding-top: var(--spacing-4xl);
  padding-bottom: var(--spacing-4xl);
  position: relative;
  z-index: 1;
  background-color: rgba(0, 0, 0, 0.3);
}

.section:first-of-type {
  padding-top: var(--spacing-5xl);
}

.container.is-max-desktop {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: var(--spacing-xl);
  padding-right: var(--spacing-xl);
}

.column.is-full {
  padding: 0;
}

/* ============================================
   HERO SECTION - Minimal & Impactful
   ============================================ */
.hero-video-section {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.hero-video-container {
  position: relative;
  width: 100%;
  height: 100%;
}

.hero-video-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.hero-overlay-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  z-index: 10;
  padding-bottom: 8vh;
  padding-left: var(--spacing-3xl);
}

.hero-content {
  text-align: left;
  max-width: 1400px;
  padding: var(--spacing-lg);
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.0;
  margin-bottom: var(--spacing-md);
  color: var(--color-white);
}

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  font-size: 1.05rem;
  color: var(--color-gray-400);
  font-weight: 500;
}

.hero-author .author-link {
  color: var(--color-gray-300);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.hero-author .author-link:hover {
  color: var(--color-white);
}

.hero-date {
  color: var(--color-gray-500);
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: var(--spacing-xs);
}

/* ============================================
   BUTTONS - Refined & Subtle
   ============================================ */
.button.is-dark {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 500;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.button.is-dark:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.button.is-dark .icon {
  margin-right: var(--spacing-xs);
}

/* ============================================
   IMAGES & FIGURES - Elegant Presentation
   ============================================ */
figure.image {
  margin: 0 auto;
  border-radius: 12px;
  overflow: hidden;
  background: transparent;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

figure.image:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5);
}

figure.image img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
}

.video-caption {
  text-align: center;
  margin-top: var(--spacing-md);
  font-size: 1rem;
  color: var(--color-gray-500);
  font-weight: 500;
}

/* ============================================
   LISTS - Clean & Readable
   ============================================ */
.content ul {
  list-style: none;
  padding: 0;
  margin: var(--spacing-xl) 0;
}

.content ul li {
  position: relative;
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--color-gray-300);
  font-weight: 400;
}

.content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-gray-600);
}

.content ul li strong {
  color: var(--color-white);
  font-weight: 500;
}

/* ============================================
   TABLES - Premium Data Presentation
   ============================================ */
.results-tabs-container {
  margin-bottom: var(--spacing-3xl);
}

.results-tabs {
  display: flex;
  gap: var(--spacing-xs);
  background: rgba(255, 255, 255, 0.02);
  padding: var(--spacing-xs);
  border-radius: 8px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.tab-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: transparent;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-gray-400);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
}

.tab-btn:hover {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.is-active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
}

.table-wrapper {
  background: rgba(255, 255, 255, 0.02);
  border-radius: 12px;
  padding: var(--spacing-xl);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  margin: var(--spacing-xl) 0;
}

.results-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 1rem;
}

.results-table th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 700;
  font-size: 1.05rem;
  color: #fff !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.results-table th:not(:first-child) {
  text-align: center;
}

.results-table td {
  padding: var(--spacing-md);
  color: var(--color-white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 1rem;
  font-weight: 500;
}

.results-table td:not(:first-child) {
  text-align: center;
}

.results-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.ours-row {
  background: rgba(255, 165, 0, 0.1) !important;
  border-top: 1px solid rgba(255, 165, 0, 0.3);
}

.ours-row td {
  color: var(--color-white);
}

.ours-cell {
  background: rgba(255, 165, 0, 0.08) !important;
}

/* ============================================
   VIDEO GRID - Clean Layout
   ============================================ */
.dataset-block {
  margin-top: var(--spacing-4xl);
}

.dataset-block:first-of-type {
  margin-top: var(--spacing-2xl);
}

.dataset-title {
  color: var(--color-white);
  margin-bottom: var(--spacing-xl);
}

.dataset-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.dataset-card {
  background: rgba(255, 255, 255, 0.02);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition-base);
}

.dataset-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.dataset-card-inner {
  background: var(--color-black);
  border-radius: 12px;
  overflow: hidden;
}

.dataset-video {
  width: 100%;
  display: block;
  background: var(--color-black);
}

.dataset-caption {
  padding: var(--spacing-md);
  font-size: 1rem;
  color: var(--color-gray-500);
  margin: 0;
  text-align: center;
  font-weight: 500;
}

/* ============================================
   RESPONSIVE DESIGN - Mobile First
   ============================================ */
@media (max-width: 1024px) {
  .dataset-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .container.is-max-desktop {
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-3xl: 3rem;
    --spacing-4xl: 4rem;
    --spacing-5xl: 5rem;
  }
  
  .section {
    padding-top: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-meta {
    flex-direction: column;
    gap: var(--spacing-sm);
    font-size: 1rem;
  }
  
  .hero-links {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-links .button {
    width: 100%;
    justify-content: center;
    font-size: 0.95rem;
  }
  
  .dataset-grid {
    grid-template-columns: 1fr;
  }
  
  .results-tabs {
    flex-wrap: wrap;
  }
  
  .tab-btn {
    flex: 1;
    min-width: calc(50% - var(--spacing-xs));
    font-size: 0.9rem;
  }
  
  .table-wrapper {
    padding: var(--spacing-md);
  }
  
  .results-table {
    font-size: 0.9rem;
  }
  
  .results-table th {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-white) !important;
  }
  
  .results-table td {
    font-size: 0.9rem;
    font-weight: 500;
    padding: var(--spacing-sm);
  }
  
  .content {
    font-size: 1rem;
  }
  
  .content ul li {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .hero-overlay-content {
    padding-left: var(--spacing-md) !important;
  }
  
  .container.is-max-desktop {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }
  
  .title.is-3 {
    font-size: 1.75rem;
    font-weight: 500;
  }
  
  .content {
    font-size: 1rem;
  }
  
  .content ul li {
    font-size: 1rem;
  }
  
  .results-table {
    font-size: 0.85rem;
  }
  
  .results-table th {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-white) !important;
  }
  
  .results-table td {
    font-size: 0.85rem;
    font-weight: 500;
  }
}

/* ============================================
   UTILITIES - Clean Helpers
   ============================================ */
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.has-text-justified {
  text-align: justify;
}

/* ============================================
   BIBTEX SECTION - Clean Code Display
   ============================================ */
.bibtex-container {
  position: relative;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.bibtex-container pre {
  margin: 0;
  padding: 0;
  background: transparent;
  border: none;
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-gray-300);
  overflow-x: auto;
}

.bibtex-container code {
  display: block;
  color: var(--color-gray-300);
  font-family: 'Courier New', monospace;
}

.copy-button {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  padding: var(--spacing-sm);
  color: var(--color-gray-400);
  cursor: pointer;
  transition: all var(--transition-base);
}

.copy-button:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.2);
}

/* ============================================
   FOOTER - Minimal
   ============================================ */
.footer {
  padding: var(--spacing-3xl) 0;
  background: transparent;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: var(--spacing-4xl);
}