/* =========================================================
   Premium Liquid Glass — Tutor Landing (Mobile-First)
   File: /docs/assets/css/styles.css
   Senior-level mobile optimization:
   - Touch targets ≥44×44px (Apple HIG)
   - Safe-area-inset for notched devices
   - Performance optimizations
   - Reduced motion support
   ========================================================= */

/* -----------------------------
   Design tokens
----------------------------- */
:root {
  color-scheme: light dark;

  /* Typography - Premium 'Outfit' */
  --font-sans: "Outfit", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  /* Fluid typography - Optimized for mobile readability */
  --fs-0: clamp(0.75rem, 3.5vw, 0.9rem);    /* 12-14.4px small text */
  --fs-1: clamp(0.95rem, 4.2vw, 1.125rem);  /* 15.2-18px body text - increased for legibility */
  --fs-2: clamp(1.15rem, 4.8vw, 1.35rem);   /* 18.4-21.6px subheadings */
  --fs-3: clamp(1.5rem, 6vw, 2rem);         /* 24-32px h3 */
  --fs-4: clamp(2rem, 8vw, 2.75rem);        /* 32-44px h2 */
  --fs-5: clamp(2.75rem, 11vw, 4.5rem);     /* 44-72px h1 - reduced min for standard phones */

  --lh-tight: 1.1;
  --lh-normal: 1.5;

  /* Layout */
  --container: 1200px;
  /* Slightly wider for modern feel */
  --pad: max(1.25rem, env(safe-area-inset-left, 1.25rem)); /* Slightly reduced side padding for more content width */
  --pad-block: clamp(3rem, 10vw, 5rem); /* Increased minimum vertical spacing for sections */

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
  --space-7: 8rem;

  /* Touch targets */
  --touch-min: 48px;
  /* Larger for better mobile UX */

  /* Radius - Super Round */
  --r-sm: 12px;
  --r-md: 20px;
  --r-lg: 32px;
  --r-xl: 48px;

  /* Motion - Snappy & Smooth */
  --easing: cubic-bezier(0.16, 1, 0.3, 1);
  /* "Spring"-like ease out */
  --dur-1: 200ms;
  --dur-2: 400ms;
  --dur-3: 600ms;

  /* Glassmorphism 2.0 - Desktop Optimized */
  --blur-sm: 12px;
  --blur-md: 24px;      /* Increased for deep glass look */
  --blur-lg: 48px;

  /* Colors - Deep Premium Dark Mode */
  --bg: #030508;
  /* Almost black, slight navy tint */
  --bg-2: #0A0F1C;
  /* Rich dark blue-grey */

  --surface: rgba(255, 255, 255, 0.03);
  --surface-2: rgba(255, 255, 255, 0.08);
  --stroke: rgba(255, 255, 255, 0.08);
  --stroke-strong: rgba(255, 255, 255, 0.15);

  /* Text - Improved Contrast */
  --text: #FFFFFF;
  --muted: #CBD5E1;     /* Lighter gray for better readability */
  --subtle: #94A3B8;    /* Lighter accent text */

  /* Vibrant Accents */
  --primary: #4F8EFF;
  /* Bright Electric Blue */
  --primary-glow: rgba(79, 142, 255, 0.4);
  --accent: #A855F7;
  /* Vivid Purple */
  --accent-glow: rgba(168, 85, 247, 0.4);

  --good: #22C55E;
  --bad: #EF4444;
  --warn: #F59E0B;

  /* Shadows - Colored Glows */
  --shadow-1:
    0 4px 20px -2px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;

  --shadow-2:
    0 24px 48px -12px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(255, 255, 255, 0.08) inset;

  --shadow-glow: 0 0 40px -10px var(--primary-glow);

  --b-1: 1px solid var(--stroke);
  --focus: var(--primary);

  /* Gradients - Mesh & Cinema */
  --g-accent: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
  --g-glass: linear-gradient(180deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.01) 100%);
  --g-sheen: linear-gradient(45deg, transparent 40%, rgba(255, 255, 255, 0.1) 50%, transparent 60%);

  /* Noise Texture (Data URL for performance) */
  --noise: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.05'/%3E%3C/svg%3E");
}

  /* Desktop: усиливаем эффекты для "дорогого" вида */
@media (min-width: 768px) {
  :root {
    --blur-sm: 16px;
    --blur-md: 32px;    /* Strong blur for desktop */
    --blur-lg: 64px;
    --shadow-1: 0 10px 40px rgba(0, 0, 0, 0.45);
    --shadow-2: 0 20px 80px rgba(0, 0, 0, 0.60);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  :root {
    --dur-1: 0ms;
    --dur-2: 0ms;
    --dur-3: 0ms;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* -----------------------------
   Base / reset
----------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  /* Убираем синюю подсветку при tap */
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  /* Предотвращаем горизонтальный скролл */
  overflow-x: hidden;
  height: 100%;
  /* Оптимизация рендеринга на мобильных */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  /* Предотвращаем iOS font scaling */
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  /* Учитываем safe areas для notch */
  padding: env(safe-area-inset-top, 0) env(safe-area-inset-right, 0) env(safe-area-inset-bottom, 0) env(safe-area-inset-left, 0);

  font-family: var(--font-sans);
  font-size: var(--fs-1);
  line-height: var(--lh-normal);
  color: var(--text);
  min-height: 100%;
  position: relative;
  
  background: var(--bg);
}

/* Фиксированный фон вынесен отдельно для Edge/Chrome performance */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1200px circle at 10% 10%, rgba(79, 142, 255, 0.08) 0%, transparent 60%),
    radial-gradient(1000px circle at 90% 20%, rgba(168, 85, 247, 0.06) 0%, transparent 60%),
    radial-gradient(1400px circle at 50% 60%, rgba(56, 189, 248, 0.03) 0%, transparent 50%),
    linear-gradient(180deg, var(--bg), var(--bg-2));
  pointer-events: none;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: var(--noise);
  opacity: 0.07;        /* Ultra-subtle texture */
  mix-blend-mode: overlay;
  z-index: 9999;
}

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

a {
  color: inherit;
  text-decoration: none;
  /* Улучшаем область клика на touch-устройствах */
  -webkit-tap-highlight-color: rgba(122, 167, 255, 0.15);
  /* Запрещаем callout на iOS */
  -webkit-touch-callout: none;
}

a:hover {
  text-decoration: underline;
}

::selection {
  background: rgba(122, 167, 255, 0.30);
  color: rgba(255, 255, 255, 0.95);
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}


/* -----------------------------
   Typography helpers
----------------------------- */
.kicker {
  font-size: var(--fs-0);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--subtle);
  font-weight: 600;
}

.h1 {
  font-size: var(--fs-5);
  line-height: var(--lh-tight);
  margin: 0;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.h2 {
  font-size: var(--fs-4);
  line-height: var(--lh-tight);
  margin: 0;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.h3 {
  font-size: var(--fs-3);
  line-height: 1.3;
  margin: 0;
  letter-spacing: -0.01em;
  font-weight: 650;
}

.h4 {
  font-size: var(--fs-2);
  line-height: 1.35;
  margin: 0;
  letter-spacing: -0.005em;
  font-weight: 600;
}

.p {
  font-size: var(--fs-2);
  color: var(--muted);
  margin: 0;
}

.small {
  font-size: var(--fs-0);
  color: var(--subtle);
  line-height: 1.5;
}

/* -----------------------------
   Layout helpers
----------------------------- */
.container {
  width: min(var(--container), 100% - (var(--pad) * 2));
  margin-inline: auto;
}

.section {
  padding-block: clamp(2rem, 8vw, 5rem);
}

.stack {
  display: grid;
  gap: var(--space-3);
}

.center {
  text-align: center;
}

/* Mobile-first grid */
.grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
}

/* Tablet: 2 колонки */
@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid {
    gap: var(--space-4);
  }
}

/* Desktop: 3 колонки */
@media (min-width: 900px) {
  .grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .span-1 { grid-column: span 1; }
  .span-2 { grid-column: span 2; }
  .span-3 { grid-column: span 3; }
}

.divider {
  height: 1px;
  width: 100%;
  background: rgba(255, 255, 255, 0.10);
  margin-block: var(--space-4);
}

@media (min-width: 768px) {
  .divider {
    margin-block: var(--space-5);
  }
}

/* =============================================
   METHOD SECTION LAYOUT
   Новая компоновка: 40% слева (4 карточки) + 60% справа (платформа)
   ============================================= */

/* Mobile: стеком */
.grid-method-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

/* Desktop: 40/60 split */
@media (min-width: 900px) {
  .grid-method-split {
    grid-template-columns: 40% 60%;
    gap: var(--space-5);
  }
}

/* Левая колонка: стек 4 компактных карточек */
.method-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

@media (min-width: 900px) {
  .method-steps {
    gap: var(--space-2);
  }
}

/* Компактные карточки (уменьшенный padding) */
.card.compact {
  padding: var(--space-3);
}

@media (min-width: 768px) {
  .card.compact {
    padding: var(--space-4);
  }
}

/* Правая колонка: акцентная карточка платформы */
.method-platform {
  display: flex;
}

.platform-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  height: 100%;
  padding: var(--space-4);
  /* Слабый акцентный фон */
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.08) 0%, rgba(118, 75, 162, 0.05) 100%);
  border: 1px solid rgba(102, 126, 234, 0.25);
}

@media (min-width: 768px) {
  .platform-card {
    padding: var(--space-5);
  }
}

/* Превью платформы: градиент + иконка */
.platform-preview {
  width: 100%;
  height: clamp(140px, 20vw, 220px);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  margin-bottom: var(--space-3);
  
  /* Interactivity */
  cursor: pointer;
  transition: transform var(--dur-2) var(--easing), box-shadow var(--dur-2) var(--easing), border-color var(--dur-2) var(--easing);
}

.platform-preview:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 15px 30px rgba(102, 126, 234, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.platform-preview:active {
  transform: translateY(0) scale(0.98);
  box-shadow: none;
}

.platform-preview:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 4px;
}

/* -----------------------------
   Sticky CTA Button
----------------------------- */
.sticky-cta {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 90;
  
  /* Inherit btn styles manually or mix */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  background: var(--primary);
  color: var(--bg);
  font-weight: 700;
  border-radius: 50px; /* Pill shape */
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
  backdrop-filter: blur(10px);
  
  /* Transition for visibility */
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.95);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.sticky-cta:hover {
  background: var(--text); /* Slightly lighter interaction */
  color: var(--bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(102, 126, 234, 0.6);
}

.sticky-cta:active {
  transform: translateY(0) scale(0.98);
}

.sticky-cta.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

/* Mobile adjustments: Center bottom */
@media (max-width: 767px) {
  .sticky-cta {
    bottom: 20px;
    right: auto;
    left: 15px;  /* Balanced margins */
    width: calc(100% - 85px); /* Full width minus space for chat button (50px) + gap (15px) + right margin (15px) */
    transform: translateY(20px) scale(0.95); 
    white-space: nowrap;
    font-size: 0.95rem;
    padding: 12px 0; /* Horizontal padding removed to fit text if needed, or adjust */
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
  }
  
  .sticky-cta:hover {
    transform: translateY(-2px);
  }

  .sticky-cta.is-visible {
    /* Slide up to 0 from translateY(20px) */
    transform: translateY(0) scale(1);
  }
}

/* Бейдж DEMO */
.platform-badge {
  position: absolute;
  bottom: var(--space-2);
  right: var(--space-2);
  background: rgba(255, 255, 255, 0.25);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: var(--fs-0);
  color: white;
  font-weight: 700;
  letter-spacing: 0.05em;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Arrow in Platform Preview */
.platform-arrow {
  position: absolute;
  top: 16px;
  right: 16px;
  color: rgba(255, 255, 255, 0.6);
  transition: all 0.2s ease;
}

.platform-preview:hover .platform-arrow {
  color: #fff;
  transform: translate(2px, -2px);
}

@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .platform-badge {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
}

/* Контент платформы */
.platform-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* Кнопка в платформе (полная ширина на мобиле) */
.platform-card .btn {
  width: 100%;
  justify-content: center;
}

@media (min-width: 768px) {
  .platform-card .btn {
    width: auto;
    align-self: flex-start;
  }
}

/* -----------------------------
   Component: Tool Card (Ecosystem)
----------------------------- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: var(--r-md);
  cursor: pointer;
  transition: all var(--dur-1) var(--easing);
  text-align: left;
  user-select: none;
  position: relative;
  overflow: hidden;
}

/* Hover State */
.tool-card:hover {
  background: var(--surface-2);
  border-color: var(--stroke-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
}

.tool-card:active {
  transform: translateY(0);
}

/* Icons */
.tool-card__icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  margin-bottom: var(--space-1);
  color: var(--text);
  transition: var(--dur-2);
}

.tool-card:hover .tool-card__icon {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.1);
}

/* Icon Colors */
.tool-card--reader .tool-card__icon { color: var(--primary); background: rgba(79, 142, 255, 0.1); }
.tool-card--reader:hover .tool-card__icon { background: var(--primary); color: #fff; }

.tool-card--trainer .tool-card__icon { color: var(--accent); background: rgba(168, 85, 247, 0.1); }
.tool-card--trainer:hover .tool-card__icon { background: var(--accent); color: #fff; }

.tool-card--sims .tool-card__icon { color: var(--good); background: rgba(34, 197, 94, 0.1); }
.tool-card--sims:hover .tool-card__icon { background: var(--good); color: #fff; }

.tool-card__title {
  font-weight: 600;
  font-size: var(--fs-1);
  color: var(--text);
  line-height: 1.2;
}

.tool-card__desc {
  font-size: 0.875rem;
  color: var(--subtle);
  line-height: 1.3;
}

/* Arrow Icon */
.tool-card__arrow {
  position: absolute;
  top: 12px;
  right: 12px;
  color: var(--subtle);
  opacity: 0.4;
  transition: var(--dur-2);
}

.tool-card:hover .tool-card__arrow {
  opacity: 1;
  color: var(--text);
  transform: translate(2px, -2px);
}

/* -----------------------------
   Glass surfaces
----------------------------- */
.glass {
  background: var(--g-glass);
  border: 1px solid var(--stroke);
  border-top: 1px solid var(--stroke-strong);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-1);
  position: relative;
  overflow: hidden;
  /* Fix: Paint Containment & Isolation
     1. contain: paint -> гарантирует обрезку
     2. isolation: isolate -> создает новый контекст стекинга
     3. mask-image -> WebKit фикс для border-radius + overflow */
  transform: translateZ(0);
  contain: paint style layout;
  isolation: isolate;
  -webkit-mask-image: -webkit-radial-gradient(white, black);
  mask-image: radial-gradient(white, black);
  /* Самый мощный способ обрезки: clip-path */
  clip-path: inset(0 round var(--r-lg));
  transition: transform var(--dur-2) var(--easing), box-shadow var(--dur-2) var(--easing), border-color var(--dur-2) var(--easing), z-index 0s;
  z-index: 1;
}

.glass:hover {
  z-index: 10;
}

/* -----------------------------
   Mobile Optimization: List View
   Make tools look like native app list items on phone
----------------------------- */
@media (max-width: 767px) {
  .tool-grid {
    grid-template-columns: 1fr; /* Stack vertically */
    gap: 12px;
  }

  .tool-card {
    flex-direction: row; /* Horizontal layout [Icon | Text | Arrow] */
    align-items: center;
    padding: 16px;
    gap: 16px;
    min-height: auto;
  }

  .tool-card__icon {
    width: 48px;
    height: 48px;
    margin-bottom: 0; /* Reset desktop margin */
    flex-shrink: 0;
  }

  .tool-card__arrow {
    position: static; /* Flow naturally in flex row */
    margin-left: auto; /* Push to far right */
    opacity: 1; /* Always visible on touch */
    transform: none;
    color: var(--subtle);
  }
  
  .tool-card:active {
    background: var(--surface-2);
    transform: scale(0.98);
  }
}


.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--g-sheen);
  opacity: 0;
  transform: translateX(-100%) skewX(-15deg);
  /* Fix: Reset Logic
     При уходе мыши: сначала быстро исчезаем (0.2s),
     затем мгновенно (0s) телепортируемся в начало c задержкой (0.2s) */
  transition: opacity 0.2s ease-out, transform 0s 0.2s;
  pointer-events: none;
  z-index: 2;
}

@media (hover: hover) {
  .glass:hover::before {
    opacity: 1;
    transform: translateX(100%) skewX(-15deg);
    /* Fix: Play Logic
       При наведении: плывем 0.8s */
    transition: transform 0.8s ease-in-out, opacity 0.1s;
  }
}



/* Прогрессивное улучшение: backdrop-filter только на поддерживающих устройствах */
@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  @media (min-width: 768px) {
    .glass {
      backdrop-filter: blur(var(--blur-md)) saturate(1.25);
      -webkit-backdrop-filter: blur(var(--blur-md)) saturate(1.25);
    }
  }

  /* На мобильных: легче */
  @media (max-width: 767px) {
    .glass {
      backdrop-filter: blur(var(--blur-sm)) saturate(1.1);
      -webkit-backdrop-filter: blur(var(--blur-sm)) saturate(1.1);
    }
  }
}

/* Highlight только на desktop */
@media (min-width: 768px) {
  .glass::after {
    content: "";
    position: absolute;
    inset: 0; /* Убрал -2px, чтобы не было 'протечек' */
    pointer-events: none;
    background:
      radial-gradient(800px 220px at 20% 10%, rgba(255, 255, 255, 0.14), transparent 60%),
      radial-gradient(700px 220px at 80% 0%, rgba(255, 255, 255, 0.08), transparent 55%);
    opacity: 0.40;
  }
}

.card {
  padding: clamp(1rem, 4vw, 1.5rem);
}

/* Hover только на устройствах с мышью */
@media (hover: hover) and (pointer: fine) {
  .card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-2);
  }
}

/* Transitions */
.card,
.btn,
.input,
.textarea,
.nav a {
  transition:
    transform 500ms var(--easing),
    box-shadow 500ms var(--easing),
    background-color 500ms var(--easing),
    border-color 500ms var(--easing),
    opacity 500ms var(--easing),
    filter 500ms var(--easing);
}

/* -----------------------------
   Header / Mobile Navigation
----------------------------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding-block: 0.75rem;
  padding-inline: max(var(--pad), env(safe-area-inset-left, 1rem));
  background: rgba(6, 10, 18, 0.85);
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
}

@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .header {
    backdrop-filter: blur(var(--blur-sm)) saturate(1.3);
    -webkit-backdrop-filter: blur(var(--blur-sm)) saturate(1.3);
  }
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

/* Mobile: hamburger menu */
.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  background: transparent;
  border: none;
  cursor: pointer;
  min-width: var(--touch-min);
  min-height: var(--touch-min);
  align-items: center;
  justify-content: center;
  border-radius: var(--r-sm);
}

.nav-toggle:active {
  background: rgba(255, 255, 255, 0.08);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--dur-2) var(--easing), opacity var(--dur-2) var(--easing);
}

/* Анимация X */
.nav-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.nav-links {
  display: none;
  position: fixed;
  top: calc(60px + env(safe-area-inset-top, 0));
  left: 0;
  right: 0;
  background: rgba(6, 10, 18, 0.98);
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
  padding: var(--space-4) var(--pad);
  flex-direction: column;
  gap: 0.5rem;
  max-height: calc(100vh - 60px - env(safe-area-inset-top, 0) - env(safe-area-inset-bottom, 0));
  overflow-y: auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .nav-links {
    backdrop-filter: blur(20px) saturate(1.5);
    -webkit-backdrop-filter: blur(20px) saturate(1.5);
  }
}

.nav-links.is-open {
  display: flex;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.875rem 1rem;
  border-radius: var(--r-md);
  border: 1px solid transparent;
  min-height: var(--touch-min);
  display: flex;
  align-items: center;
  font-size: var(--fs-2);
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a:active,
.nav-links a.is-active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
  text-decoration: none;
}

/* Desktop: горизонтальное меню */
@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .nav-links {
    display: flex;
    position: static;
    flex-direction: row;
    background: transparent;
    border: none;
    padding: 0;
    box-shadow: none;
    max-height: none;
    overflow: visible;
    gap: 0.25rem;
    flex-wrap: wrap;
  }

  .nav-links a {
    padding: 0.625rem 0.875rem;
    font-size: var(--fs-1);
    min-height: auto;
  }
}

/* -----------------------------
   Hero
----------------------------- */
.hero {
  padding-block: clamp(2rem, 8vw, 6rem);
}

.hero .h1 {
  text-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

.hero-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-3);
}

@media (min-width: 768px) {
  .hero-actions {
    margin-top: var(--space-4);
  }
}

/* Mobile: full-width buttons */
@media (max-width: 640px) {
  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }
}

.hero-badges {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-3);
}

/* -----------------------------
   Buttons - Touch Optimized
----------------------------- */
.btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;

  /* Минимум 44x44px для touch */
  min-height: var(--touch-min);
  padding: 0.875rem 1.25rem;
  border-radius: 999px;

  font-weight: 650;
  font-size: var(--fs-1);
  line-height: 1.2;
  letter-spacing: -0.01em;

  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.14);

  /* Предотвращаем double-tap zoom на iOS */
  touch-action: manipulation;
}

@media (hover: hover) and (pointer: fine) {
  .btn:hover {
    text-decoration: none;
    transform: translateY(-2px) scale(1.02);
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.35);
    /* Солнечное сияние - мягкий glow эффект */
    box-shadow: 
      0 0 15px rgba(255, 255, 255, 0.25),
      0 0 30px rgba(255, 255, 255, 0.15),
      0 0 50px rgba(79, 142, 255, 0.2),
      0 0 80px rgba(168, 85, 247, 0.1),
      0 4px 20px rgba(0, 0, 0, 0.2);
  }
}

/* Active state для touch */
.btn:active {
  transform: scale(0.98);
  background: rgba(255, 255, 255, 0.12);
}

.btn-primary {
  color: rgba(8, 10, 18, 0.95);
  background: var(--g-accent);
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow:
    0 10px 36px rgba(122, 167, 255, 0.20),
    0 2px 0 rgba(255, 255, 255, 0.16) inset;
}

@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover {
    transform: translateY(-3px) scale(1.03);
    /* Явно осветляем фон */
    background: linear-gradient(135deg, #5A9CFF 0%, #A06CF7 100%);
    border-color: rgba(255, 255, 255, 0.5);
    /* Солнечное сияние - яркий glow эффект */
    box-shadow:
      0 0 20px rgba(79, 142, 255, 0.6),
      0 0 40px rgba(79, 142, 255, 0.4),
      0 0 60px rgba(168, 85, 247, 0.3),
      0 0 100px rgba(168, 85, 247, 0.15),
      0 2px 0 rgba(255, 255, 255, 0.4) inset;
  }
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
}

.btn-lg {
  padding: 1rem 1.5rem;
  font-size: var(--fs-2);
  min-height: 52px;
}

.btn[disabled],
.btn.is-disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
  pointer-events: none;
}

.btn.is-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.85;
}

.btn.is-loading::after {
  content: "";
  width: 16px;
  height: 16px;
  border-radius: 999px;
  border: 2px solid rgba(255, 255, 255, 0.55);
  border-top-color: rgba(255, 255, 255, 0.0);
  margin-left: 0.4rem;
  animation: spin 900ms linear infinite;
}

/* -----------------------------
   Pills / badges
----------------------------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  font-size: var(--fs-0);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  line-height: 1.3;
}

.pill strong {
  color: var(--text);
  font-weight: 650;
}

/* -----------------------------
   Forms - Touch Optimized
----------------------------- */
.form {
  display: grid;
  gap: var(--space-3);
}

@media (min-width: 768px) {
  .form {
    gap: var(--space-4);
  }
}

.label {
  display: grid;
  gap: 0.5rem;
  font-size: var(--fs-1);
  color: var(--text);
  font-weight: 500;
}

.input,
.textarea {
  width: 100%;
  /* Минимум 44px для touch */
  min-height: var(--touch-min);
  padding: 0.875rem 1rem;
  border-radius: var(--r-md);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);

  /* Улучшаем читаемость на мобильных */
  font-size: max(16px, var(--fs-1));
  /* Предотвращает zoom на iOS */
  line-height: 1.5;
  font-family: inherit;

  /* Лучшее UX на мобильных */
  touch-action: manipulation;
  -webkit-appearance: none;
  appearance: none;
}

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

.input::placeholder,
.textarea::placeholder {
  color: rgba(255, 255, 255, 0.45);
}

.input:focus,
.textarea:focus {
  outline: none;
  border-color: rgba(122, 167, 255, 0.65);
  box-shadow: 0 0 0 4px rgba(122, 167, 255, 0.16);
  background: rgba(255, 255, 255, 0.08);
}

.input:invalid,
.textarea:invalid {
  border-color: rgba(255, 107, 122, 0.65);
}

.help {
  font-size: var(--fs-0);
  color: var(--subtle);
  line-height: 1.5;
}

/* -----------------------------
   Lists
----------------------------- */
.ul {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--muted);
}

.ul li {
  margin: 0.5rem 0;
  line-height: 1.6;
}

/* -----------------------------
   Media containers
----------------------------- */
.media {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
}

.media--portrait {
  aspect-ratio: 3 / 4;
}

.media--landscape {
  aspect-ratio: 16 / 9;
}

.media--doc {
  aspect-ratio: 4 / 3;
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media--padded {
  padding: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
}

.media--padded img {
  border-radius: calc(var(--r-lg) - 6px);
}

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

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

@keyframes sheen {
  0% {
    transform: translateX(-120%) rotate(12deg);
    opacity: 0;
  }

  15% {
    opacity: 0.35;
  }

  55% {
    opacity: 0.18;
  }

  100% {
    transform: translateX(140%) rotate(12deg);
    opacity: 0;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(10px);
}

.reveal.is-visible {
  animation: fadeUp var(--dur-3) var(--easing) both;
}

/* Sheen только на desktop */
@media (min-width: 768px) and (hover: hover) {
  .glass.is-sheen::before {
    content: "";
    position: absolute;
    inset: -40% -40%;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.00) 35%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.00) 65%,
        transparent 100%);
    pointer-events: none;
    transform: translateX(-120%) rotate(12deg);
    animation: sheen 6.2s var(--easing) infinite;
    opacity: 0.0;
  }
}

/* -----------------------------
   Footer
----------------------------- */
.footer {
  padding-block: 2rem;
  padding-inline: max(var(--pad), env(safe-area-inset-left, 1rem));
  color: var(--subtle);
  font-size: var(--fs-0);
  border-top: 1px solid rgba(255, 255, 255, 0.10);
  text-align: center;
}

@media (min-width: 768px) {
  .footer {
    padding-block: 2.5rem;
  }
}

/* -----------------------------
   Utilities
----------------------------- */
.hidden {
  display: none !important;
}

.mt-2 {
  margin-top: var(--space-2);
}

.mt-3 {
  margin-top: var(--space-3);
}

.mt-4 {
  margin-top: var(--space-4);
}

.mt-5 {
  margin-top: var(--space-5);
}

/* ============================================
   LIGHTBOX - Mobile Optimized
   ============================================ */

.lightbox {
  display: none;
  position: fixed;
  z-index: 9999;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.96);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  /* Учитываем safe areas */
  padding: max(var(--space-3), env(safe-area-inset-top, 16px)) max(var(--space-2), env(safe-area-inset-right, 16px)) max(var(--space-3), env(safe-area-inset-bottom, 16px)) max(var(--space-2), env(safe-area-inset-left, 16px));
  animation: fadeIn 0.25s ease;
  /* Блокируем скролл body при открытом lightbox */
  overscroll-behavior: contain;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.lightbox-content {
  max-width: 94%;
  max-height: 75vh;
  object-fit: contain;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.9);
  border-radius: var(--r-md);
  animation: zoomIn 0.25s ease;
  /* Запрещаем перетаскивание изображения */
  user-select: none;
  -webkit-user-drag: none;
  -webkit-user-select: none;
}

@media (min-width: 768px) {
  .lightbox-content {
    max-width: 90%;
    max-height: 85vh;
    border-radius: var(--r-lg);
  }
}

@keyframes zoomIn {
  from {
    transform: scale(0.85);
    opacity: 0;
  }

  to {
    transform: scale(1);
    opacity: 1;
  }
}

.lightbox-caption {
  color: white;
  font-size: var(--fs-1);
  text-align: center;
  margin-top: var(--space-3);
  max-width: 90%;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--r-md);
  line-height: 1.4;
}

@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .lightbox-caption {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }
}

@media (min-width: 768px) {
  .lightbox-caption {
    font-size: var(--fs-2);
    max-width: 80%;
    padding: 1rem 1.25rem;
  }
}

.lightbox-close {
  position: absolute;
  top: max(12px, env(safe-area-inset-top, 12px));
  right: max(12px, env(safe-area-inset-right, 12px));
  width: var(--touch-min);
  height: var(--touch-min);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 300;
  color: white;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  background: rgba(0, 0, 0, 0.6);
  border-radius: 50%;
  transition: 0.2s;
  z-index: 10;
  touch-action: manipulation;
}

@media (min-width: 768px) {
  .lightbox-close {
    top: max(var(--space-5), env(safe-area-inset-top, 20px));
    right: max(var(--space-5), env(safe-area-inset-right, 20px));
    font-size: 42px;
    width: 52px;
    height: 52px;
    background: rgba(0, 0, 0, 0.4);
  }
}

@media (hover: hover) and (pointer: fine) {
  .lightbox-close:hover {
    color: #ff4444;
    transform: scale(1.08);
    background: rgba(0, 0, 0, 0.8);
  }
}

.lightbox-close:active {
  transform: scale(0.95);
}

/* Стрелки навигации - адаптивные */
.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: var(--touch-min);
  height: var(--touch-min);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: bold;
  color: white;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  background: rgba(0, 0, 0, 0.6);
  border-radius: 50%;
  transition: 0.2s;
  z-index: 10;
  touch-action: manipulation;
}

@media (min-width: 768px) {

  .lightbox-prev,
  .lightbox-next {
    font-size: 32px;
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.12);
  }
}

@media (hover: hover) and (pointer: fine) {

  .lightbox-prev:hover,
  .lightbox-next:hover {
    background: rgba(255, 255, 255, 0.22);
    transform: translateY(-50%) scale(1.08);
  }
}

.lightbox-prev:active,
.lightbox-next:active {
  transform: translateY(-50%) scale(0.95);
}

.lightbox-prev {
  left: max(8px, env(safe-area-inset-left, 8px));
}

.lightbox-next {
  right: max(8px, env(safe-area-inset-right, 8px));
}

@media (min-width: 768px) {
  .lightbox-prev {
    left: max(var(--space-5), env(safe-area-inset-left, 20px));
  }

  .lightbox-next {
    right: max(var(--space-5), env(safe-area-inset-right, 20px));
  }
}

/* Стили для thumbnail-карточек */
.cert-thumbnail {
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  overflow: hidden;
  /* Улучшаем область клика */
  -webkit-tap-highlight-color: rgba(122, 167, 255, 0.15);
  touch-action: manipulation;
}

@media (hover: hover) and (pointer: fine) {
  .cert-thumbnail:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  }

  .cert-thumbnail:hover img {
    transform: scale(1.04);
  }
}

/* На touch-устройствах: легкое нажатие */
@media (hover: none) {
  .cert-thumbnail:active {
    transform: scale(0.97);
  }
}

.cert-thumbnail img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.25s ease;
}

.cert-thumbnail figcaption {
  text-align: center;
  padding: var(--space-2);
  font-weight: 500;
  font-size: var(--fs-0);
  line-height: 1.4;
}

@media (min-width: 768px) {
  .cert-thumbnail figcaption {
    font-size: var(--fs-1);
    padding: var(--space-3);
  }
}

/* ============================================
   CERT-GALLERY специфичные стили
   ============================================ */

.cert-gallery {
  /* Mobile: 1 колонка для лучшей читаемости */
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .cert-gallery {
    /* Tablet: 2 колонки */
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .cert-gallery {
    /* Desktop: 3 колонки */
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ============================================
   BENTO HERO (Hub)
   ============================================ */

.bento {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .bento {
    grid-template-columns: 1.35fr 1fr;
    grid-template-rows: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
    align-items: stretch;
  }
}

.bento-hero {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 900px) {
  .bento-hero {
    grid-row: 1 / 4;
    align-content: start;
  }
}

.bento-hero__top {
  display: grid;
  gap: var(--space-3);
}

@media (min-width: 768px) {
  .bento-hero__top {
    grid-template-columns: 1fr auto;
    align-items: start;
    gap: var(--space-4);
  }
}

.bento-portrait {
  margin: 0;
  width: clamp(120px, 18vw, 190px);
  aspect-ratio: 1 / 1;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: var(--shadow-1);
  background: rgba(255, 255, 255, 0.03);
}

.bento-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bento-mini {
  padding: clamp(0.9rem, 2.4vw, 1.2rem);
  background: rgba(255, 255, 255, 0.04);
}

.bento-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  align-content: start;
}

@media (min-width: 900px) {
  .bento-card {
    min-height: 0;
  }
}

.bento-card__icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 22px;
}

.bento-demo {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

@media (min-width: 640px) {
  .bento-demo {
    grid-template-columns: 1fr 1fr;
  }
}

.bento-card:hover {
  text-decoration: none;
}

/* ============================================
   HOVER ANIMATIONS FIXES
   ============================================ */

/* Utility классы для безопасных hover-эффектов */
.hover-lift {
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform: translateZ(0);
  /* GPU acceleration */
}

.hover-lift-wrapper:hover .hover-lift {
  transform: translateY(-8px) translateZ(0);
}

/* Отключить hover на мобильных */
@media (hover: none) {
  .hover-lift-wrapper:hover .hover-lift {
    transform: none;
  }
}

/* Оптимизированный glassmorphism */
.glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  /* Снижено с 16px для performance */
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  transform: translateZ(0);
  /* GPU acceleration */
  will-change: transform;
  /* РќР• backdrop-filter! */
}

/* Убрать blur на больших экранах для производительности */
@media (min-width: 1400px) {
  .glass {
    backdrop-filter: blur(4px);
    /* РњРёРЅРёРјСѓРј */
    background: rgba(255, 255, 255, 0.15);
    /* Более непрозрачный */
  }
}

/* Убрать blur в модальных окнах */
.modal-overlay,
.lightbox {
  backdrop-filter: none;
  background: rgba(0, 0, 0, 0.8);
}

/* Исправленный hover для Bento cards */
.bento-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  align-content: start;
  position: relative;
  padding: var(--space-4);
  border-radius: 24px;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform: translateZ(0);
  /* GPU acceleration */
  z-index: 1;
}

.bento-card:hover {
  text-decoration: none;
  z-index: 10;
  /* Поднять над соседями */
  transform: translateY(-6px) translateZ(0);
}

/* Расширенная hover area для стабильности */
.bento-card::before {
  content: '';
  position: absolute;
  inset: -8px;
  /* Расширяет hover area */
  pointer-events: auto;
  z-index: -1;
}

/* Исправления для сертификатов */
.cert-thumbnail {
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform: translateZ(0);
}

.cert-thumbnail:hover {
  transform: translateY(-6px) translateZ(0);
}

.cert-thumbnail:hover img {
  transform: scale(1.04);
}

/* Предотвращение анимаций при загрузке страницы */
.card,
.bento-card,
.cert-thumbnail,
.btn {
  opacity: 0;
  transform: translateY(20px) translateZ(0);
}

.is-loaded .card,
.is-loaded .bento-card,
.is-loaded .cert-thumbnail,
.is-loaded .btn {
  opacity: 1;
  transform: translateY(0) translateZ(0);
  transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Animation debugging is active but visual indicators are hidden for production */

/* -----------------------------
   Reviews / Testimonials Section
----------------------------- */
.reviews-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  width: 100%;
}

@media (min-width: 650px) {
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .reviews-grid {
    /* 6-column grid trick for centered 3-to-2 layout */
    grid-template-columns: repeat(6, 1fr);
  }
  
  .review-card {
    grid-column: span 2; /* 3 items per row (6/2=3) */
  }

  /* Make last 2 cards span 3 columns each (centered row of 2) */
  .review-card:nth-child(4),
  .review-card:nth-child(5) {
    grid-column: span 3;
  }
}

.review-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  
  /* Reset strict containment to allow shadows but clip sheen */
  contain: layout style !important; 
  overflow: hidden !important;
  isolation: isolate;
  
  /* Premium Glass Effect */
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--r-md);
  box-shadow: 0 4px 24px -1px rgba(0, 0, 0, 0.2);
  
  /* Ensure single backdrop filter */
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  
  transition: transform 0.4s var(--easing), box-shadow 0.4s var(--easing), border-color 0.4s var(--easing);
  
  /* GPU stability */
  transform: translateZ(0);
  will-change: transform;
  position: relative;
  min-height: 260px;
}

/* Enable sheen effect - clipped by overflow: hidden */
.review-card::before {
  display: block !important;
}

.review-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px -5px rgba(0, 0, 0, 0.4);
  border-color: var(--primary);
  background: rgba(255, 255, 255, 0.06);
  z-index: 5;
}

.review-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #38bdf8);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.15rem;
  color: white;
  flex-shrink: 0;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.05);
}

.review-meta {
  flex: 1;
  min-width: 0;
}

.review-name {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  line-height: 1.2;
}

.review-date {
  font-size: 0.85rem;
  color: var(--subtle);
  margin-top: 2px;
}

.review-external-link {
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--subtle);
  transition: color 0.2s, transform 0.2s;
  padding: 4px;
}

.review-external-link:hover {
  color: var(--primary);
  transform: translate(2px, -2px);
}

.review-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 8px;
  border-radius: 6px;
  background: rgba(79, 142, 255, 0.1);
  color: var(--primary);
  border: 1px solid rgba(79, 142, 255, 0.2);
}

.review-text {
  font-size: 1rem;
  color: #cad4e0;
  line-height: 1.6;
  margin: 0;
  flex: 1;
}

.review-rating {
  display: flex;
  gap: 4px;
  margin-top: auto;
  padding-top: var(--space-2);
}

.review-rating .star {
  color: #FBBF24;
  font-size: 1.1rem;
  filter: drop-shadow(0 0 4px rgba(251, 191, 36, 0.3));
}

/* Profi.ru Link Style */
.profi-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 100px;
  color: var(--text);
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  text-decoration: none;
  backdrop-filter: blur(10px);
}

.profi-link:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px -5px rgba(79, 142, 255, 0.3);
  text-decoration: none;
  color: white;
}

.profi-link svg {
  color: var(--subtle);
  transition: 0.3s;
}

.profi-link:hover svg {
  color: var(--primary);
  transform: translate(3px, -3px);
}

/* Utility */
.mt-4 { margin-top: var(--space-4); }
.pricing-desc { flex: 1; }