/**
 * @file
 * Case Study Dossier Component
 * 
 * A sophisticated, editorial-style component for showcasing market research projects.
 * Features asymmetric layout with hero image, client logo, and tabbed content panels.
 * 
 * USAGE:
 * ------
 * <div class="case-dossier">
 *   <div class="case-dossier-visual">
 *     <div class="case-dossier-image">
 *       <img src="hero.jpg" alt="Project">
 *     </div>
 *     <div class="case-dossier-logo">
 *       <img src="logo.svg" alt="Client">
 *     </div>
 *   </div>
 *   <div class="case-dossier-content">
 *     <div class="case-dossier-header">
 *       <span class="case-dossier-label">Market Research</span>
 *       <h2 class="case-dossier-title">Project Title</h2>
 *       <p class="case-dossier-intro">Short intro...</p>
 *     </div>
 *     <div class="case-dossier-tabs">
 *       <div class="case-dossier-tabs-nav">
 *         <button class="case-dossier-tab active" data-tab="overview">Overview</button>
 *         <button class="case-dossier-tab" data-tab="details">Deep Dive</button>
 *         <button class="case-dossier-tab" data-tab="services">Services</button>
 *       </div>
 *       <div class="case-dossier-tabs-content">
 *         <div class="case-dossier-panel active" id="overview">...</div>
 *         <div class="case-dossier-panel" id="details">...</div>
 *         <div class="case-dossier-panel" id="services">...</div>
 *       </div>
 *     </div>
 *   </div>
 * </div>
 * 
 * STYLE VARIANTS:
 * ---------------
 * - (default)           → Light theme, left image
 * - case-dossier-dark   → Dark theme
 * - case-dossier-flip   → Image on right side
 * - case-dossier-accent-coral / -purple / -gold → Accent color variants
 */

/* ==========================================================================
   CASE DOSSIER - Main Container
   ========================================================================== */

.case-dossier {
  display: grid;
  grid-template-columns: 45% 55%;
  gap: 0;
  background: #ffffff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 
    0 4px 20px rgba(0, 0, 0, 0.08),
    0 8px 40px rgba(0, 0, 0, 0.04);
  margin-bottom: 3rem;
  min-height: 480px;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.case-dossier.case-dossier-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hover state */
.case-dossier:hover {
  box-shadow: 
    0 8px 30px rgba(0, 0, 0, 0.10),
    0 16px 60px rgba(0, 0, 0, 0.06);
}

/* ==========================================================================
   CASE DOSSIER - Visual Side (Image + Logo)
   ========================================================================== */

.case-dossier-visual {
  position: relative;
  overflow: hidden;
  background: #f3f4f6;
}

/* Hero Image */
.case-dossier-image {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.case-dossier-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  margin: 0;
}

/* Subtle zoom on hover */
.case-dossier:hover .case-dossier-image img {
  transform: scale(1.04);
}

/* Gradient overlay for depth */
.case-dossier-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(0, 0, 0, 0) 0%,
    rgba(0, 0, 0, 0) 50%,
    rgba(0, 0, 0, 0.15) 100%
  );
  pointer-events: none;
}

/* Client Logo Badge */
.case-dossier-logo {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  z-index: 10;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  max-width: 140px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case-dossier-logo img {
  display: block;
  max-height: 40px;
  width: auto;
  margin: 0;
}

.case-dossier:hover .case-dossier-logo {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* ==========================================================================
   CASE DOSSIER - Content Side
   ========================================================================== */

.case-dossier-content {
  display: flex;
  flex-direction: column;
  padding: 2.5rem;
}

/* Header Area */
.case-dossier-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid #e5e7eb;
}

/* Category Label */
.case-dossier-label {
  display: inline-block;
  font-family: 'Oswald', sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #0d9488;
  background: rgba(13, 148, 136, 0.1);
  padding: 0.375rem 0.875rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}

/* Project Title */
.case-dossier-title {
  font-family: 'Oswald', sans-serif;
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.2;
  color: #1a1a1a;
  margin: 0 0 0.875rem 0;
  text-align: left;
  letter-spacing: -0.01em;
}

/* Intro Paragraph */
.case-dossier-intro {
  font-family: 'Figtree', sans-serif;
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.6;
  color: #6b7280;
  margin: 0;
  text-align: left;
}

/* ==========================================================================
   CASE DOSSIER - Tabs Navigation
   ========================================================================== */

.case-dossier-tabs {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.case-dossier-tabs-nav {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid #e5e7eb;
  padding-bottom: 0;
}

.case-dossier-tab {
  position: relative;
  padding: 0.75rem 1.25rem;
  font-family: 'Figtree', sans-serif;
  font-size: 0.9375rem;
  font-weight: 500;
  color: #6b7280;
  background: transparent;
  border: none;
  border-radius: 0;
  cursor: pointer;
  transition: color 0.25s ease;
  white-space: nowrap;
  margin-bottom: -2px;
}

.case-dossier-tab::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: transparent;
  transition: background 0.25s ease;
}

.case-dossier-tab:hover {
  color: #1a1a1a;
}

.case-dossier-tab.active {
  color: #0d9488;
}

.case-dossier-tab.active::after {
  background: #0d9488;
}

/* Focus state */
.case-dossier-tab:focus-visible {
  outline: 2px solid rgba(13, 148, 136, 0.4);
  outline-offset: 2px;
}

/* ==========================================================================
   CASE DOSSIER - Tab Panels
   ========================================================================== */

.case-dossier-tabs-content {
  flex-grow: 1;
  position: relative;
}

.case-dossier-panel {
  display: none;
  opacity: 0;
  transform: translateY(10px);
}

.case-dossier-panel.active {
  display: block;
  animation: caseDossierFadeIn 0.35s ease forwards;
}

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

/* Panel Content Styling */
.case-dossier-panel p {
  font-family: 'Figtree', sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: #4b5563;
  margin: 0 0 1rem 0;
  text-align: left;
}

.case-dossier-panel p:last-child {
  margin-bottom: 0;
}

/* Services List */
.case-dossier-services {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.case-dossier-services li {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
  font-family: 'Figtree', sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  color: #4b5563;
  padding: 0.625rem 0;
  border-bottom: 1px solid #f3f4f6;
  margin: 0;
}

.case-dossier-services li:last-child {
  border-bottom: none;
}

/* Service Icon */
.case-dossier-services li::before {
  content: '';
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  background: #0d9488;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-size: 12px;
  background-repeat: no-repeat;
  background-position: center;
}

/* ==========================================================================
   CASE DOSSIER - Accent Divider Line
   ========================================================================== */

.case-dossier-visual::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, #0d9488, #14b8a6);
  z-index: 5;
}

/* ==========================================================================
   STYLE VARIANT: Flipped (Image on Right)
   ========================================================================== */

.case-dossier.case-dossier-flip {
  grid-template-columns: 55% 45%;
}

.case-dossier.case-dossier-flip .case-dossier-visual {
  order: 2;
}

.case-dossier.case-dossier-flip .case-dossier-content {
  order: 1;
}

.case-dossier.case-dossier-flip .case-dossier-visual::before {
  right: auto;
  left: 0;
}

.case-dossier.case-dossier-flip .case-dossier-logo {
  left: auto;
  right: 1.5rem;
}

/* ==========================================================================
   STYLE VARIANT: Dark Theme
   ========================================================================== */

.case-dossier.case-dossier-dark {
  background: #1f2937;
}

.case-dossier.case-dossier-dark .case-dossier-header {
  border-bottom-color: #374151;
}

.case-dossier.case-dossier-dark .case-dossier-label {
  color: #5eead4;
  background: rgba(94, 234, 212, 0.15);
}

.case-dossier.case-dossier-dark .case-dossier-title {
  color: #f9fafb;
}

.case-dossier.case-dossier-dark .case-dossier-intro {
  color: #9ca3af;
}

.case-dossier.case-dossier-dark .case-dossier-tabs-nav {
  border-bottom-color: #374151;
}

.case-dossier.case-dossier-dark .case-dossier-tab {
  color: #9ca3af;
}

.case-dossier.case-dossier-dark .case-dossier-tab:hover {
  color: #f3f4f6;
}

.case-dossier.case-dossier-dark .case-dossier-tab.active {
  color: #5eead4;
}

.case-dossier.case-dossier-dark .case-dossier-tab.active::after {
  background: #5eead4;
}

.case-dossier.case-dossier-dark .case-dossier-panel p {
  color: #d1d5db;
}

.case-dossier.case-dossier-dark .case-dossier-services li {
  color: #d1d5db;
  border-bottom-color: #374151;
}

.case-dossier.case-dossier-dark .case-dossier-services li::before {
  background: #5eead4;
}

/* ==========================================================================
   STYLE VARIANT: Accent Colors
   ========================================================================== */

/* Coral Accent */
.case-dossier.case-dossier-accent-coral .case-dossier-visual::before {
  background: linear-gradient(to bottom, #f97316, #fb923c);
}

.case-dossier.case-dossier-accent-coral .case-dossier-label {
  color: #ea580c;
  background: rgba(249, 115, 22, 0.1);
}

.case-dossier.case-dossier-accent-coral .case-dossier-tab.active {
  color: #ea580c;
}

.case-dossier.case-dossier-accent-coral .case-dossier-tab.active::after {
  background: #ea580c;
}

.case-dossier.case-dossier-accent-coral .case-dossier-services li::before {
  background: #f97316;
}

/* Purple Accent */
.case-dossier.case-dossier-accent-purple .case-dossier-visual::before {
  background: linear-gradient(to bottom, #8b5cf6, #a78bfa);
}

.case-dossier.case-dossier-accent-purple .case-dossier-label {
  color: #7c3aed;
  background: rgba(139, 92, 246, 0.1);
}

.case-dossier.case-dossier-accent-purple .case-dossier-tab.active {
  color: #7c3aed;
}

.case-dossier.case-dossier-accent-purple .case-dossier-tab.active::after {
  background: #7c3aed;
}

.case-dossier.case-dossier-accent-purple .case-dossier-services li::before {
  background: #8b5cf6;
}

/* Gold Accent */
.case-dossier.case-dossier-accent-gold .case-dossier-visual::before {
  background: linear-gradient(to bottom, #d97706, #fbbf24);
}

.case-dossier.case-dossier-accent-gold .case-dossier-label {
  color: #b45309;
  background: rgba(217, 119, 6, 0.1);
}

.case-dossier.case-dossier-accent-gold .case-dossier-tab.active {
  color: #b45309;
}

.case-dossier.case-dossier-accent-gold .case-dossier-tab.active::after {
  background: #b45309;
}

.case-dossier.case-dossier-accent-gold .case-dossier-services li::before {
  background: #d97706;
}

/* ==========================================================================
   RESPONSIVE - Tablet
   ========================================================================== */

@media (max-width: 1024px) {
  .case-dossier {
    grid-template-columns: 40% 60%;
    min-height: 420px;
  }
  
  .case-dossier.case-dossier-flip {
    grid-template-columns: 60% 40%;
  }
  
  .case-dossier-content {
    padding: 2rem;
  }
  
  .case-dossier-title {
    font-size: 1.5rem;
  }
  
  .case-dossier-logo {
    padding: 0.625rem 1rem;
  }
  
  .case-dossier-logo img {
    max-height: 32px;
  }
}

/* ==========================================================================
   RESPONSIVE - Mobile
   ========================================================================== */

@media (max-width: 768px) {
  .case-dossier {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  
  .case-dossier.case-dossier-flip {
    grid-template-columns: 1fr;
  }
  
  .case-dossier.case-dossier-flip .case-dossier-visual {
    order: 1;
  }
  
  .case-dossier.case-dossier-flip .case-dossier-content {
    order: 2;
  }
  
  .case-dossier-visual {
    position: relative;
    height: 280px;
  }
  
  .case-dossier-visual::before {
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 4px;
  }
  
  .case-dossier.case-dossier-flip .case-dossier-visual::before {
    left: 0;
  }
  
  .case-dossier-content {
    padding: 1.5rem;
  }
  
  .case-dossier-header {
    margin-bottom: 1.5rem;
    padding-bottom: 1.25rem;
  }
  
  .case-dossier-title {
    font-size: 1.375rem;
  }
  
  .case-dossier-intro {
    font-size: 1rem;
  }
  
  .case-dossier-tabs-nav {
    flex-wrap: wrap;
    gap: 0.25rem;
  }
  
  .case-dossier-tab {
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
    flex: 1 1 auto;
    text-align: center;
  }
  
  .case-dossier-logo {
    top: 1rem;
    left: 1rem;
    padding: 0.5rem 0.875rem;
  }
  
  .case-dossier-logo img {
    max-height: 28px;
  }
}

@media (max-width: 480px) {
  .case-dossier-visual {
    height: 220px;
  }
  
  .case-dossier-content {
    padding: 1.25rem;
  }
  
  .case-dossier-title {
    font-size: 1.25rem;
  }
  
  .case-dossier-tab {
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
  }
}

/* ==========================================================================
   CONTAINER - Multiple Dossiers Layout
   ========================================================================== */

.case-dossier-grid {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

/* Alternating layout - every other dossier is flipped */
.case-dossier-grid.case-dossier-alternate .case-dossier:nth-child(even) {
  grid-template-columns: 55% 45%;
}

.case-dossier-grid.case-dossier-alternate .case-dossier:nth-child(even) .case-dossier-visual {
  order: 2;
}

.case-dossier-grid.case-dossier-alternate .case-dossier:nth-child(even) .case-dossier-content {
  order: 1;
}

.case-dossier-grid.case-dossier-alternate .case-dossier:nth-child(even) .case-dossier-visual::before {
  right: auto;
  left: 0;
}

.case-dossier-grid.case-dossier-alternate .case-dossier:nth-child(even) .case-dossier-logo {
  left: auto;
  right: 1.5rem;
}

@media (max-width: 768px) {
  .case-dossier-grid.case-dossier-alternate .case-dossier:nth-child(even) {
    grid-template-columns: 1fr;
  }
  
  .case-dossier-grid.case-dossier-alternate .case-dossier:nth-child(even) .case-dossier-visual {
    order: 1;
  }
  
  .case-dossier-grid.case-dossier-alternate .case-dossier:nth-child(even) .case-dossier-content {
    order: 2;
  }
  
  .case-dossier-grid.case-dossier-alternate .case-dossier:nth-child(even) .case-dossier-visual::before {
    left: 0;
    right: 0;
  }
  
  .case-dossier-grid.case-dossier-alternate .case-dossier:nth-child(even) .case-dossier-logo {
    left: 1rem;
    right: auto;
  }
}