/* ==========================================================================
   A.Development - Premium Modern Landing Page Stylesheet
   Domain: adevelopment.wikiour.com
   Full Responsiveness Across All Devices (320px to 1440px+)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design System & Theme Variables
   -------------------------------------------------------------------------- */

/* Default Dark Theme Variables */
:root, [data-theme="dark"] {
  --bg-dark: #07090e;
  --bg-primary: #0b0f19;
  --bg-secondary: #111726;
  --bg-tertiary: #182035;
  --bg-glass: rgba(17, 23, 38, 0.65);
  --bg-glass-hover: rgba(24, 32, 53, 0.85);

  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;

  --gradient-primary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
  --gradient-accent: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --gradient-glow: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(7, 9, 14, 0) 70%);

  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --text-gradient: linear-gradient(135deg, #ffffff 0%, #cbd5e1 50%, #94a3b8 100%);

  --border-subtle: rgba(255, 255, 255, 0.1);
  --border-focus: rgba(59, 130, 246, 0.5);
  --border-glow: rgba(6, 182, 212, 0.35);

  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.2);

  --header-bg: rgba(7, 9, 14, 0.95);
  --mobile-menu-bg: #0b0f19;
  --input-bg: rgba(11, 15, 25, 0.7);
  --code-preview-bg: rgba(15, 23, 42, 0.95);

  --bg-radial-1: rgba(6, 182, 212, 0.08);
  --bg-radial-2: rgba(139, 92, 246, 0.08);
  --bg-radial-3: rgba(59, 130, 246, 0.06);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container-max-width: 1320px;
}

/* Explicit Light Theme via data-theme="light" with High Contrast & Crisp Card Borders */
[data-theme="light"] {
  --bg-dark: #f1f5f9;
  --bg-primary: #ffffff;
  --bg-secondary: #e2e8f0;
  --bg-tertiary: #cbd5e1;
  --bg-glass: #ffffff;
  --bg-glass-hover: #f8fafc;

  --accent-cyan: #0284c7;
  --accent-blue: #2563eb;
  --accent-purple: #7c3aed;
  --accent-emerald: #059669;

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);

  --border-subtle: rgba(15, 23, 42, 0.15);
  --border-focus: rgba(37, 99, 235, 0.5);
  --border-glow: rgba(2, 132, 199, 0.4);

  --shadow-sm: 0 4px 6px -1px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.12);
  --shadow-lg: 0 20px 40px -15px rgba(15, 23, 42, 0.18);
  --shadow-glow: 0 0 30px rgba(37, 99, 235, 0.15);

  --header-bg: rgba(255, 255, 255, 0.95);
  --mobile-menu-bg: #ffffff;
  --input-bg: #ffffff;
  --code-preview-bg: #0f172a;

  --bg-radial-1: rgba(2, 132, 199, 0.08);
  --bg-radial-2: rgba(124, 58, 237, 0.08);
  --bg-radial-3: rgba(37, 99, 235, 0.06);
}

/* --------------------------------------------------------------------------
   2. Reset & Base Styles (With Fixed Header Scroll Padding Offset)
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px; /* Prevents fixed header (80px) from obscuring section content */
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

/* Scroll margin offset for all sections and anchor IDs */
section, .section, .contact-section, .form-card, [id] {
  scroll-margin-top: 100px;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(at 10% 10%, var(--bg-radial-1) 0px, transparent 50%),
    radial-gradient(at 90% 20%, var(--bg-radial-2) 0px, transparent 50%),
    radial-gradient(at 50% 80%, var(--bg-radial-3) 0px, transparent 50%);
  background-attachment: fixed;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

/* Explicit Button & Input Reset to prevent default browser UI override */
button {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background: transparent;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 1rem;
  color: inherit;
  cursor: pointer;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

input, textarea {
  font-family: inherit;
  font-size: 1rem;
  box-sizing: border-box;
}

img, svg {
  display: block;
  max-width: 100%;
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --------------------------------------------------------------------------
   3. Header & Navigation (100% Uniform Links)
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition: background-color var(--transition-normal), backdrop-filter var(--transition-normal), border-color var(--transition-normal);
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  background-color: var(--header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  min-height: 44px;
  z-index: 150;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.4);
}

.logo-text {
  background: var(--text-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-accent {
  color: var(--accent-cyan);
  -webkit-text-fill-color: var(--accent-cyan);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

/* Hide mobile menu footer on desktop screens */
.mobile-menu-footer {
  display: none;
}

/* All Navigation Links are 100% Uniform and Clean */
.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--accent-cyan);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-fast);
  border-radius: 2px;
}

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

.nav-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: 150;
}

/* Theme Switcher Button */
.theme-toggle-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.theme-toggle-btn:hover {
  border-color: var(--accent-blue);
  transform: translateY(-2px);
  color: var(--accent-cyan);
}

.theme-icon-sun, .theme-icon-moon {
  transition: transform 0.3s ease;
}

/* Toggle icon display based on current theme */
[data-theme="dark"] .theme-icon-sun,
:root:not([data-theme="light"]) .theme-icon-sun {
  display: block;
}
[data-theme="dark"] .theme-icon-moon,
:root:not([data-theme="light"]) .theme-icon-moon {
  display: none;
}

[data-theme="light"] .theme-icon-sun {
  display: none;
}
[data-theme="light"] .theme-icon-moon {
  display: block;
}

.mobile-menu-toggle {
  display: none;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  cursor: pointer;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  z-index: 150;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.mobile-menu-toggle:hover {
  border-color: var(--accent-blue);
}

.mobile-menu-toggle svg {
  transition: transform 0.3s ease;
}

.mobile-menu-toggle[aria-expanded="true"] svg {
  transform: rotate(90deg);
}

/* --------------------------------------------------------------------------
   4. Buttons & UI Components
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  min-height: 48px;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  outline: none;
  white-space: nowrap;
  touch-action: manipulation;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #ffffff !important;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.35);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transition: left 0.75s ease;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-blue);
  transform: translateY(-2px);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.15);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
  100% { opacity: 1; transform: scale(1); }
}

/* --------------------------------------------------------------------------
   5. Hero Section & Clean Code Preview Window
   -------------------------------------------------------------------------- */
.hero {
  padding: 180px 0 100px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.75rem;
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.hero-title .highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-subheadline {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 620px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  width: 100%;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  width: 100%;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--text-primary);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  width: 100%;
}

.hero-card-preview {
  background: var(--code-preview-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  width: 100%;
  max-width: 520px;
  position: relative;
  z-index: 2;
  transition: transform var(--transition-normal);
  overflow: hidden;
}

.hero-card-preview:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
}

.card-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.window-dots {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.window-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }

.window-filename {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'Fira Code', 'Courier New', monospace;
  letter-spacing: 0.02em;
  opacity: 0.8;
}

.preview-code-block {
  margin: 0;
  padding: 0;
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: clamp(0.78rem, 1.3vw, 0.88rem);
  line-height: 1.45;
  color: #cbd5e1;
  overflow-x: auto;
}

.code-line {
  display: block;
  min-height: 1.45em;
  white-space: pre;
}

.code-keyword { color: #f472b6; font-weight: 600; }
.code-func { color: #38bdf8; font-weight: 600; }
.code-str { color: #a3e635; }
.code-var { color: #c084fc; font-weight: 600; }

.floating-badge {
  position: absolute;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glow);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  z-index: 3;
  animation: float 4s ease-in-out infinite;
}

.badge-top-right {
  top: -18px;
  right: -15px;
  animation-delay: 0s;
}

.badge-bottom-left {
  bottom: -18px;
  left: -15px;
  animation-delay: 2s;
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
  100% { transform: translateY(0px); }
}

/* --------------------------------------------------------------------------
   6. Services Section (Моя спеціалізація)
   -------------------------------------------------------------------------- */
.section {
  padding: clamp(60px, 8vw, 110px) 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.section-title {
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: var(--text-secondary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.service-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.service-card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-glow);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), 0 0 25px rgba(59, 130, 246, 0.15);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  transition: all var(--transition-normal);
  flex-shrink: 0;
}

.service-card:hover .service-icon-wrapper {
  background: var(--gradient-primary);
  color: #ffffff;
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
}

.service-title {
  font-size: clamp(1.2rem, 2.5vw, 1.45rem);
  font-weight: 700;
  color: var(--text-primary);
}

.service-description {
  color: var(--text-secondary);
  font-size: clamp(0.9rem, 1.5vw, 1rem);
  line-height: 1.6;
}

.service-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.5rem;
}

.service-feature-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.feature-check {
  color: var(--accent-cyan);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   7. Why Choose Me / Advantages
   -------------------------------------------------------------------------- */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.advantage-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: clamp(1.5rem, 2.5vw, 2rem);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.advantage-card:hover {
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.3);
}

.advantage-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.advantage-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.advantage-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   8. Cases / Portfolio Section (36 Projects)
   -------------------------------------------------------------------------- */
.cases-section {
  background: var(--bg-primary);
  position: relative;
}

.cases-filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.filter-btn {
  padding: 0.65rem 1.4rem;
  min-height: 44px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all var(--transition-fast);
  outline: none;
  box-sizing: border-box;
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-blue);
  transform: translateY(-2px);
}

.filter-btn.active {
  background: var(--gradient-primary);
  color: #ffffff !important;
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.35);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.case-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
  transition: all var(--transition-normal);
  position: relative;
  box-shadow: var(--shadow-md);
}

.case-card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-glow);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), 0 0 25px rgba(59, 130, 246, 0.15);
}

.case-card.hidden {
  display: none !important;
}

.case-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.case-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.25);
}

.case-niche {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.case-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
}

.case-description {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.case-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.metric-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 700;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-emerald);
}

.case-action-btn {
  width: 100%;
  padding: 0.75rem;
  min-height: 44px;
  font-size: 0.88rem;
  font-weight: 600;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  outline: none;
}

.case-card:hover .case-action-btn {
  background: var(--gradient-primary);
  border-color: transparent;
  color: #ffffff !important;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.cases-load-more-wrapper {
  display: flex;
  justify-content: center;
  margin-top: 3rem;
  width: 100%;
}

.load-more-btn {
  padding: 0.85rem 2.25rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.load-more-btn:hover {
  transform: translateY(-3px);
  border-color: var(--accent-cyan);
  box-shadow: 0 8px 25px rgba(6, 182, 212, 0.25);
  color: var(--accent-cyan);
}

/* --------------------------------------------------------------------------
   9. Pricing Section (Вартість послуг & Індивідуальне ціноутворення)
   -------------------------------------------------------------------------- */
.pricing-section {
  background: var(--bg-dark);
  position: relative;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 3.5rem;
}

.pricing-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 3vw, 2.5rem);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
  transition: all var(--transition-normal);
  position: relative;
  box-shadow: var(--shadow-md);
}

.pricing-card.featured {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.25);
  transform: scale(1.03);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured:hover {
  transform: scale(1.03) translateY(-6px);
}

.pricing-badge-popular {
  position: absolute;
  top: -14px;
  right: 24px;
  background: var(--gradient-primary);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.4);
}

.pricing-header {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.pricing-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
}

.pricing-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.pricing-price-box {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin: 0.5rem 0;
}

.pricing-amount {
  font-size: clamp(2rem, 3.5vw, 2.5rem);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.pricing-period {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.pricing-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.pricing-feature-icon {
  color: var(--accent-cyan);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 0.15rem;
}

/* Custom Pricing Banner */
.custom-pricing-banner {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.1) 0%, rgba(59, 130, 246, 0.1) 50%, rgba(139, 92, 246, 0.1) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 4vw, 3rem);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  box-shadow: var(--shadow-lg);
}

.custom-pricing-content {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 780px;
}

.custom-pricing-title {
  font-size: clamp(1.25rem, 2.5vw, 1.65rem);
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.custom-pricing-text {
  font-size: clamp(0.95rem, 1.5vw, 1.05rem);
  color: var(--text-secondary);
  line-height: 1.65;
}

.custom-pricing-action {
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   10. FAQ Section (Часті запитання) & Accordion Styling
   -------------------------------------------------------------------------- */
.faq-section {
  background: var(--bg-primary);
  position: relative;
}

.faq-categories {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2.75rem;
}

.faq-grid {
  max-width: 920px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.faq-item.hidden {
  display: none !important;
}

.faq-item:hover, .faq-item.active {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-md);
}

.faq-question {
  width: 100%;
  padding: 1.35rem 1.75rem;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: clamp(1rem, 2vw, 1.15rem);
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  outline: none;
  min-height: 56px;
  line-height: 1.4;
  box-sizing: border-box;
}

.faq-icon {
  width: 22px;
  height: 22px;
  color: var(--accent-cyan);
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.35s ease;
  padding: 0 1.75rem;
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.65;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 1.75rem 1.5rem 1.75rem;
}

/* --------------------------------------------------------------------------
   11. Contact & Socials Section
   -------------------------------------------------------------------------- */
.contact-section {
  background: var(--bg-primary);
  position: relative;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-card-box {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.contact-header-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.phone-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.phone-link {
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  letter-spacing: -0.02em;
  word-break: break-word;
  min-height: 48px;
}

.phone-link:hover {
  color: var(--accent-cyan);
}

.messengers-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.messenger-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.25rem;
  min-height: 44px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  color: #ffffff !important;
  transition: transform var(--transition-fast), filter var(--transition-fast);
  touch-action: manipulation;
}

.messenger-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.15);
}

.messenger-telegram { background-color: #26a5e4; }
.messenger-whatsapp { background-color: #25d366; }
.messenger-viber { background-color: #7360f2; }

.socials-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.social-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.25rem;
  min-height: 52px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.social-item:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-blue);
  transform: translateX(4px);
}

.social-left {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.social-icon-box {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  flex-shrink: 0;
}

.icon-fb { background: #1877f2; }
.icon-ig { background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%); }

.social-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.social-arrow {
  color: var(--text-muted);
  transition: color var(--transition-fast);
  flex-shrink: 0;
}

.social-item:hover .social-arrow {
  color: var(--accent-cyan);
}

/* --------------------------------------------------------------------------
   12. Lead Capture Form (Web3Forms Integration)
   -------------------------------------------------------------------------- */
.form-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3.5vw, 2.5rem);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg);
  position: relative;
}

.form-title {
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.lead-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-input, .form-textarea {
  width: 100%;
  padding: 0.85rem 1.1rem;
  min-height: 48px;
  background: var(--input-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.25);
}

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

.form-submit-btn {
  width: 100%;
  padding: 1rem;
  font-size: 1rem;
  margin-top: 0.5rem;
}

.form-response-message {
  padding: 1rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  display: none;
  margin-top: 1rem;
}

.form-response-message.success {
  display: block;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-emerald);
}

.form-response-message.error {
  display: block;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

/* --------------------------------------------------------------------------
   13. Footer & Modal
   -------------------------------------------------------------------------- */
.footer {
  background-color: var(--bg-dark);
  border-top: 1px solid var(--border-subtle);
  padding: 3rem 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  flex-wrap: wrap;
}

.footer-link-item {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.footer-link-item:hover {
  color: var(--accent-cyan);
}

.privacy-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  padding: 1rem;
}

.privacy-modal.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  max-width: 680px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.75rem;
  cursor: pointer;
  padding: 0.5rem;
  line-height: 1;
  min-width: 44px;
  min-height: 44px;
}

.modal-close-btn:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem 1.75rem;
  overflow-y: auto;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.modal-body h4 {
  color: var(--text-primary);
  margin: 1.25rem 0 0.5rem;
}

/* --------------------------------------------------------------------------
   14. Strict Responsive Breakpoints (0px to 1440px+)
   -------------------------------------------------------------------------- */

/* Large Desktop (>= 1440px) */
@media (min-width: 1440px) {
  .container {
    max-width: 1360px;
  }
}

/* Desktop & Laptop (1024px to 1279px) */
@media (max-width: 1279px) {
  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2.5rem;
  }

  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Tablet Layout (768px to 1023px) */
@media (max-width: 1023px) {
  .hero {
    padding: 140px 0 80px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero-visual {
    max-width: 540px;
    margin: 0 auto;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .pricing-card.featured {
    transform: none;
  }
  
  .pricing-card.featured:hover {
    transform: translateY(-6px);
  }

  .custom-pricing-banner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }

  .custom-pricing-action {
    width: 100%;
  }

  .custom-pricing-action .btn {
    width: 100%;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

/* --------------------------------------------------------------------------
   PREMIUM MOBILE NAVIGATION MENU OVERLAY (0px to 767px)
   -------------------------------------------------------------------------- */
@media (max-width: 767px) {
  .nav-container {
    height: 70px;
  }

  /* Full Screen, Modern Opaque Overlay Mobile Menu */
  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    background: var(--mobile-menu-bg);
    background-image: 
      radial-gradient(at 15% 15%, var(--bg-radial-1) 0px, transparent 60%),
      radial-gradient(at 85% 85%, var(--bg-radial-2) 0px, transparent 60%);
    opacity: 1;
    z-index: 140;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 80px 1.75rem 2.5rem;
    gap: 1rem;
    border-bottom: none;
    transform: translateY(-100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: none;
    overflow-y: auto;
  }

  .nav-links.mobile-open {
    transform: translateY(0);
  }

  /* Premium Mobile Link Cards */
  .nav-link {
    font-size: 1.25rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary) !important;
    padding: 0.85rem 1.25rem;
    width: 100%;
    text-align: center;
    background: rgba(255, 255, 255, 0.03) !important;
    border: 1px solid var(--border-subtle) !important;
    border-radius: var(--radius-md) !important;
    box-shadow: none !important;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    transition: all var(--transition-fast);
  }

  .nav-link:hover,
  .nav-link:focus,
  .nav-link.active {
    background: rgba(6, 182, 212, 0.12) !important;
    border-color: var(--accent-cyan) !important;
    color: var(--accent-cyan) !important;
    transform: translateX(4px);
  }

  .nav-link::after {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .nav-controls .btn-primary {
    display: none;
  }

  .hero {
    padding: 120px 0 60px;
  }

  .hero-content {
    align-items: center;
    text-align: center;
  }

  .hero-subheadline {
    text-align: center;
  }

  .hero-actions {
    justify-content: center;
  }

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

  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    text-align: center;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .advantages-grid {
    grid-template-columns: 1fr;
  }

  .cases-grid {
    grid-template-columns: 1fr;
  }

  .messengers-row {
    flex-direction: column;
  }

  .messenger-btn {
    width: 100%;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: 1.25rem;
  }

  .footer-links {
    justify-content: center;
  }

  .floating-badge {
    display: none;
  }
}

/* Small Mobile Devices (<= 480px) */
@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .nav-link {
    font-size: 1.15rem;
    padding: 0.75rem 1rem;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .stat-item {
    align-items: center;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 0.75rem;
  }

  .stat-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }

  .social-item {
    padding: 0.75rem 1rem;
  }

  .social-name {
    font-size: 0.85rem;
  }

  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: 0.82rem;
    width: 100%;
  }

  .faq-question {
    padding: 1.1rem 1.25rem;
    font-size: 0.95rem;
  }

  .faq-answer {
    padding: 0 1.25rem;
    font-size: 0.9rem;
  }

  .faq-item.active .faq-answer {
    padding: 0 1.25rem 1.25rem 1.25rem;
  }
}

/* Extra Small Phones (<= 360px) */
@media (max-width: 360px) {
  .logo-text {
    font-size: 1.15rem;
  }

  .logo-icon {
    width: 32px;
    height: 32px;
  }

  .phone-link {
    font-size: 1.2rem;
  }

  .btn {
    padding: 0.75rem 1.25rem;
    font-size: 0.88rem;
  }
}