/* ==========================================================================
   Learn French with Kopal - Global Styles
   ========================================================================== */

/* --- CSS Variables --- */
:root {
  /* Color Palette */
  --color-primary: #2563eb;       /* Primary Blue */
  --color-primary-dark: #1d4ed8;  /* Dark Blue (Hover) */
  --color-primary-light: #eff6ff; /* Light Accent Blue */
  --color-white: #ffffff;
  --color-bg-light: #f8fafc;
  --color-text-main: #1e293b;     /* Slate 800 */
  --color-text-muted: #64748b;    /* Slate 500 */
  --color-border: #e2e8f0;        /* Slate 200 */
  --color-warning: #fbbf24;       /* For stars / highlights */

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --spacing-xs: 0.25rem; /* 4px */
  --spacing-sm: 0.5rem;  /* 8px */
  --spacing-md: 1rem;    /* 16px */
  --spacing-lg: 2rem;    /* 32px */
  --spacing-xl: clamp(2.5rem, 5vw, 4rem);    /* 40px to 64px */
  --spacing-2xl: clamp(3.5rem, 8vw, 6rem);   /* 56px to 96px */

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-hover: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
}

/* --- Resets & Base Styles --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text-main);
  background-color: var(--color-bg-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-main);
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-normal);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul {
  list-style: none;
}

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

.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.bg-white { background-color: var(--color-white); }
.bg-light { background-color: var(--color-bg-light); }
.bg-primary { 
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%); 
  color: var(--color-white); 
}
.bg-primary-light { background-color: var(--color-primary-light); }

.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.section-padding {
  padding: var(--spacing-2xl) 0;
}

.section-title {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

.section-subtitle {
  font-size: clamp(1rem, 3vw, 1.125rem);
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.6;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease-in-out;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 15rem;
  height: 15rem;
  background-color: currentColor;
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.5s ease-out, opacity 0.5s ease-out;
  z-index: 0;
}

.btn:active::after {
  transform: translate(-50%, -50%) scale(1);
  opacity: 0.15;
  transition: 0s;
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
}

.btn:active {
  transform: scale(0.95) !important;
  box-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.1) !important;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: all 0.6s ease;
  z-index: -1;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 12px 24px -8px var(--color-primary);
}

.btn-pulse {
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4); }
  70% { box-shadow: 0 0 0 15px rgba(37, 99, 235, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0); }
}

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

.btn-outline:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 8px 16px -8px var(--color-primary);
}

/* White Button Variant (Solid) */
.btn-white {
  background-color: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
  box-shadow: var(--shadow-md);
  z-index: 1;
}

.btn-white:hover {
  background-color: var(--color-bg-light);
  color: var(--color-primary-dark);
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 12px 24px -8px rgba(255, 255, 255, 0.5);
}

/* White Outline Button Variant */
.btn-white-outline {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
  z-index: 1;
}

.btn-white-outline::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--color-bg-light);
  transition: all 0.4s ease;
  z-index: -1;
}

.btn-white-outline:hover::before {
  left: 0;
}

.btn-white-outline:hover {
  color: var(--color-primary-dark);
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 12px 24px -8px rgba(255, 255, 255, 0.5);
}

.btn-header {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn-header:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-2px);
}

/* --- Header & Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--color-primary);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-primary-dark);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100px;
}

.logo img {
  height: 80px;
  width: auto;
  transform-origin: left center;
  transition: transform 0.3s ease;
}

.logo:hover img {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1rem;
  color: var(--color-white);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-white);
  transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link:hover {
  color: var(--color-white);
  opacity: 0.8;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  margin: 5px 0;
  transition: all var(--transition-normal);
}

/* --- Global Footer --- */
.footer {
  background-color: var(--color-text-main);
  color: var(--color-white);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.footer-brand .logo-text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  display: block;
}

.footer-brand p {
  color: #94a3b8;
  font-size: 0.9rem;
}

.footer-section h4 {
  color: var(--color-white);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
}

.footer-link {
  display: block;
  color: #94a3b8;
  margin-bottom: var(--spacing-sm);
  font-size: 0.95rem;
}

.footer-link:hover {
  color: var(--color-white);
  padding-left: 4px;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid #334155;
  color: #94a3b8;
  font-size: 0.9rem;
}

/* --- Floating WhatsApp --- */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  background-color: #25D366;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  box-shadow: var(--shadow-lg);
  z-index: 100;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-hover);
  color: white;
}

/* --- Sections --- */

/* Hero Section */
.hero {
  padding: calc(100px + var(--spacing-xl)) 0 var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-white) 100%);
  display: flex;
  align-items: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.hero-title {
  font-size: clamp(2rem, 6vw, 4rem);
  color: var(--color-text-main);
  margin-bottom: var(--spacing-sm);
  line-height: 1.1;
}

.hero-subtitle {
  font-size: clamp(1rem, 3vw, 1.25rem);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xl);
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

/* Cards */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary-light);
}

.card-icon {
  width: 48px;
  height: 48px;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: var(--spacing-md);
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.card-text {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
}

/* Sub-course Cards */
.sub-course-card {
  display: block;
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-main);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.sub-course-card:hover {
  background-color: var(--color-white);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.sub-course-card::before {
  content: '→';
  position: absolute;
  right: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%) translateX(-10px);
  opacity: 0;
  color: var(--color-primary);
  transition: all var(--transition-fast);
}

.sub-course-card:hover::before {
  transform: translateY(-50%) translateX(0);
  opacity: 1;
}

.sub-course-card:hover span {
  padding-right: 20px;
}

.sub-course-card span {
  display: inline-block;
  transition: padding-right var(--transition-fast);
}

/* Testimonial Cards */
.testimonial-card {
  padding: var(--spacing-xl) var(--spacing-lg);
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: all var(--transition-normal);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
}

.stars {
  color: var(--color-warning);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
}

.client-name {
  font-weight: 600;
  font-family: var(--font-heading);
  margin-top: var(--spacing-md);
  display: block;
}

/* FAQ Accordion */
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  background-color: var(--color-white);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: var(--spacing-md) var(--spacing-lg);
  background: none;
  border: none;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-text-main);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-icon {
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--color-primary);
}

.faq-item.active .faq-question {
  color: var(--color-primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal) ease-in-out;
  padding: 0 var(--spacing-lg);
  color: var(--color-text-muted);
}

.faq-item.active .faq-answer {
  max-height: 500px; /* arbitrary max height */
  padding-bottom: var(--spacing-md);
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-family: var(--font-heading);
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-main);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* Animations */
.animate-fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-slide-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.animate-fade-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* --- Responsive Media Queries --- */
@media (max-width: 991px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: var(--color-primary);
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    box-shadow: var(--shadow-md);
    clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
    transition: clip-path 0.4s ease-in-out;
    border-top: 1px solid var(--color-primary-dark);
  }

  .nav-links.active {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
  }
  
  .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* --- Modal Styles --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(4px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease-in-out;
}

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

.modal-container {
  background-color: var(--color-white);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hover);
  position: relative;
  transform: scale(0.9);
  opacity: 0;
  transition: all 0.3s ease-in-out;
  padding: var(--spacing-lg);
  margin: var(--spacing-md);
}

.modal-overlay.active .modal-container {
  transform: scale(1);
  opacity: 1;
}

.modal-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: none;
  border: none;
  font-size: 2rem;
  line-height: 1;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
  padding: 0 0.5rem;
  border-radius: var(--radius-sm);
}

.modal-close:hover {
  color: var(--color-text-main);
  background-color: var(--color-bg-light);
}

body.modal-open {
  overflow: hidden;
}

.modal-form .form-label {
  font-size: 0.95rem;
}

/* --- Reviews Page Additions --- */
.review-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
}

.filter-btn {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 0.5rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.3s ease;
}

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

.testimonial-card {
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.testimonial-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

.review-content {
  color: var(--color-text-main);
  line-height: 1.6;
  font-size: 0.95rem;
  position: relative;
  transition: max-height 0.3s ease;
}

.review-content.clamped {
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;  
  overflow: hidden;
}

.read-more-btn {
  background: none;
  border: none;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0;
  cursor: pointer;
  margin-top: 5px;
}

.read-more-btn:hover {
  text-decoration: underline;
}

.text-highlight {
  font-weight: 600;
  color: var(--color-primary-dark);
  position: relative;
  display: inline-block;
  padding: 0 4px;
}
.text-highlight::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 40%;
  background-color: var(--color-primary-light);
  z-index: -1;
}

.profile-initial {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin-right: 12px;
}

.video-preview-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  background-color: #000;
}
.video-preview-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  opacity: 0.8;
}
.video-preview-container:hover img {
  transform: scale(1.05);
  opacity: 1;
}
.play-icon-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background: rgba(37, 99, 235, 0.9);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
  transition: all 0.3s ease;
}
.video-preview-container:hover .play-icon-overlay {
  transform: translate(-50%, -50%) scale(1.15);
  background: var(--color-primary-dark);
}

.video-lightbox {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  background: rgba(0, 0, 0, 0.9);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease;
}
.video-lightbox.active {
  opacity: 1;
  visibility: visible;
}
.video-lightbox iframe {
  width: 90%;
  max-width: 900px;
  aspect-ratio: 16/9;
  border: none;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}
.lightbox-close {
  position: absolute;
  top: 24px; right: 24px;
  background: none;
  border: none;
  color: white;
  font-size: 40px;
  line-height: 1;
  cursor: pointer;
  transition: color 0.3s ease;
}
.lightbox-close:hover {
  color: var(--color-primary-light);
}

@media (max-width: 768px) {
  .reviews-grid { grid-template-columns: 1fr !important; }
}