/* ============================================
   Stablecode — Main Stylesheet
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --color-bg: #0F0F1A;
  --color-bg-light: #161627;
  --color-surface: rgba(255, 255, 255, 0.05);
  --color-surface-hover: rgba(255, 255, 255, 0.08);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text: #FFFFFF;
  --color-text-secondary: #94A3B8;
  --color-text-muted: #64748B;
  --color-primary: #6C63FF;
  --color-secondary: #3B82F6;
  --color-accent: #06B6D4;
  --gradient-main: linear-gradient(135deg, #6C63FF, #3B82F6, #06B6D4);
  --gradient-btn: linear-gradient(135deg, #6C63FF 0%, #3B82F6 50%, #06B6D4 100%);
  --gradient-text: linear-gradient(135deg, #6C63FF, #3B82F6, #06B6D4);
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --container-max: 1200px;
  --header-height: 72px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --transition: 0.3s ease;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
  list-style: none;
}

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

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
  color: inherit;
}

button {
  cursor: pointer;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
}

p {
  color: var(--color-text-secondary);
}

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

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.125rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-btn);
  background-size: 200% 200%;
  color: #fff;
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.35);
}

.btn-primary:hover {
  background-position: 100% 100%;
  box-shadow: 0 6px 30px rgba(108, 99, 255, 0.5);
  transform: translateY(-2px);
}

.btn-outline {
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
  background: var(--color-surface);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  background: rgba(108, 99, 255, 0.1);
}

/* ---------- Cards (Glassmorphism) ---------- */
.glass-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: all var(--transition);
}

.glass-card:hover {
  background: var(--color-surface-hover);
  border-color: rgba(108, 99, 255, 0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: all var(--transition);
}

.header.scrolled {
  background: rgba(15, 15, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-list a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-main);
  transition: width var(--transition);
  border-radius: 2px;
}

.nav-list a:hover {
  color: var(--color-text);
}

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

/* ---------- Language Switcher ---------- */
.lang-switcher {
  position: relative;
}

.lang-current {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 50px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.lang-current:hover {
  border-color: var(--color-primary);
  color: var(--color-text);
}

.lang-current svg {
  width: 12px;
  height: 12px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  transition: transform var(--transition);
}

.lang-switcher.open .lang-current svg {
  transform: rotate(180deg);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 140px;
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition);
  z-index: 1002;
  box-shadow: var(--shadow-card);
}

.lang-switcher.open .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-dropdown a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: 6px;
  transition: all var(--transition);
}

.lang-dropdown a:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.lang-dropdown a.active {
  color: var(--color-primary);
  background: rgba(108, 99, 255, 0.1);
}

.mobile-nav .mobile-lang {
  display: flex;
  gap: 16px;
  margin-top: 16px;
}

.mobile-nav .mobile-lang a {
  font-size: 1rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 50px;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all var(--transition);
}

.mobile-nav .mobile-lang a:hover {
  border-color: var(--color-primary);
  color: var(--color-text);
}

.mobile-nav .mobile-lang a.active {
  background: var(--gradient-btn);
  border-color: transparent;
  color: #fff;
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  cursor: pointer;
  z-index: 1001;
}

.burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

.burger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.burger.active span:nth-child(2) {
  opacity: 0;
}

.burger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Mobile Nav Overlay ---------- */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 15, 26, 0.97);
  backdrop-filter: blur(20px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  transition: opacity var(--transition);
}

.mobile-nav.open {
  display: flex;
  opacity: 1;
}

.mobile-nav a {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

.mobile-nav a:hover {
  color: var(--color-text);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero h1 {
  margin-bottom: 24px;
}

.hero p {
  font-size: 1.25rem;
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 560px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: blobFloat 8s ease-in-out infinite;
}

.blob-1 {
  width: 500px;
  height: 500px;
  background: var(--color-primary);
  top: -10%;
  right: -5%;
  animation-delay: 0s;
}

.blob-2 {
  width: 400px;
  height: 400px;
  background: var(--color-secondary);
  bottom: -10%;
  left: 10%;
  animation-delay: -3s;
}

.blob-3 {
  width: 300px;
  height: 300px;
  background: var(--color-accent);
  top: 40%;
  right: 20%;
  animation-delay: -5s;
}

@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* ---------- Services ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.service-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.service-icon svg {
  width: 28px;
  height: 28px;
  stroke: #fff;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-card h3 {
  margin-bottom: 8px;
}

.service-card > p {
  font-size: 0.9375rem;
  margin-bottom: 16px;
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.service-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gradient-main);
  flex-shrink: 0;
}

/* ---------- About ---------- */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text p {
  font-size: 1.0625rem;
  margin-bottom: 16px;
  line-height: 1.8;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.stat-item {
  text-align: center;
  padding: 28px 16px;
}

.stat-number {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* ---------- Advantages ---------- */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.advantage-card {
  text-align: center;
  padding: 40px 24px;
}

.advantage-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.advantage-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.advantage-card h3 {
  font-size: 1.125rem;
  margin-bottom: 12px;
}

.advantage-card p {
  font-size: 0.875rem;
  line-height: 1.6;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-item-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.contact-item-text strong {
  display: block;
  font-size: 0.9375rem;
  margin-bottom: 4px;
}

.contact-item-text span,
.contact-item-text a {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.contact-item-text a:hover {
  color: var(--color-primary);
}

/* ---------- Contact Form ---------- */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea {
  padding: 14px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.9375rem;
  transition: border-color var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  background: rgba(108, 99, 255, 0.05);
}

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

.form-group.error input,
.form-group.error textarea {
  border-color: #EF4444;
}

.form-error {
  font-size: 0.8125rem;
  color: #EF4444;
  display: none;
}

.form-group.error .form-error {
  display: block;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-primary);
  flex-shrink: 0;
  cursor: pointer;
}

.checkbox-group label {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  cursor: pointer;
}

.checkbox-group label a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.checkbox-group label a:hover {
  color: var(--color-accent);
}

.checkbox-group.error {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid #EF4444;
  background: rgba(239, 68, 68, 0.06);
  animation: shake 0.4s ease;
}

.checkbox-group .form-error {
  display: none;
  font-size: 0.8125rem;
  color: #EF4444;
  margin-top: 4px;
}

.checkbox-group.error .form-error {
  display: block;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

.form-success {
  display: none;
  text-align: center;
  padding: 40px;
}

.form-success.show {
  display: block;
}

.form-success svg {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  stroke: #22C55E;
  fill: none;
  stroke-width: 2;
}

.form-success h3 {
  margin-bottom: 8px;
  color: var(--color-text);
}

.form-success p {
  font-size: 0.9375rem;
}

/* ---------- Footer ---------- */
.footer {
  padding: 48px 0 32px;
  border-top: 1px solid var(--color-border);
}

.footer-content {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-logo {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-legal {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

/* ---------- Policy Pages ---------- */
.policy-page {
  padding-top: calc(var(--header-height) + 60px);
  padding-bottom: 80px;
  min-height: 100vh;
}

.policy-content {
  max-width: 800px;
  margin: 0 auto;
}

.policy-content h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  margin-bottom: 12px;
}

.policy-content .policy-date {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 40px;
}

.policy-content h2 {
  font-size: 1.25rem;
  margin-top: 36px;
  margin-bottom: 16px;
}

.policy-content p {
  margin-bottom: 14px;
  font-size: 0.9375rem;
  line-height: 1.8;
}

.policy-content ul,
.policy-content ol {
  margin-bottom: 14px;
  padding-left: 24px;
}

.policy-content ul {
  list-style: disc;
}

.policy-content ol {
  list-style: decimal;
}

.policy-content li {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 6px;
}

/* ---------- reCAPTCHA badge hide ---------- */
.grecaptcha-badge {
  visibility: hidden !important;
}

.recaptcha-notice {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 8px;
  line-height: 1.5;
}

.recaptcha-notice a {
  color: var(--color-text-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- Scroll Animations ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ---------- Responsive: Tablet ---------- */
@media (max-width: 1024px) {
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

/* ---------- Responsive: Mobile ---------- */
@media (max-width: 768px) {
  section {
    padding: 64px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .nav-list {
    display: none;
  }

  .lang-switcher {
    display: none;
  }

  .burger {
    display: flex;
  }

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

  .advantages-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .advantage-card {
    padding: 28px 20px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero h1 {
    font-size: clamp(1.75rem, 6vw, 2.5rem);
  }

  .hero p {
    font-size: 1.0625rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: flex-start;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .stat-item {
    padding: 20px 16px;
  }

  .footer-content {
    flex-direction: column;
    gap: 24px;
  }

  .blob-1 { width: 300px; height: 300px; }
  .blob-2 { width: 250px; height: 250px; }
  .blob-3 { width: 200px; height: 200px; }
}