/* ===================================
   KAZAKHTELECOM — LIQUID GLASS DESIGN
   =================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #0066CC;
  --primary-dark: #004C99;
  --accent: #00C9FF;
  --accent-purple: #7B2CBF;
  --accent-pink: #FF006E;
  --bg-dark: #0A0E1A;
  --bg-card: rgba(255, 255, 255, 0.05);
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.1);
  --text-primary: #FFFFFF;
  --text-secondary: #B0B8C8;
  --text-muted: #6B7280;
  --gradient-1: linear-gradient(135deg, #0066CC 0%, #00C9FF 100%);
  --gradient-2: linear-gradient(135deg, #7B2CBF 0%, #FF006E 100%);
  --gradient-3: linear-gradient(180deg, #0A0E1A 0%, #1A1F2E 100%);
  --blur: blur(20px);
  --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.3);
  --transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Liquid Background */
.liquid-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: var(--bg-dark);
  overflow: hidden;
}

.liquid-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  animation: float 20s infinite ease-in-out;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: var(--primary);
  top: -200px;
  right: -100px;
  animation-delay: 0s;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: var(--accent-purple);
  bottom: -150px;
  left: -100px;
  animation-delay: -7s;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: var(--accent-pink);
  top: 50%;
  left: 50%;
  animation-delay: -14s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(50px, -50px) scale(1.1); }
  50% { transform: translate(-30px, 30px) scale(0.9); }
  75% { transform: translate(-50px, -30px) scale(1.05); }
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  background: rgba(10, 14, 26, 0.8);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition);
}

.nav.scrolled {
  padding: 12px 0;
  background: rgba(10, 14, 26, 0.95);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-icon {
  font-size: 32px;
  -webkit-text-fill-color: initial;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-1);
  transition: var(--transition);
}

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

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

.btn-personal {
  padding: 12px 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 980px;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 40px 60px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
  animation: pulse 15s infinite ease-in-out;
}

.orb-1 {
  width: 800px;
  height: 800px;
  background: var(--primary);
  top: -300px;
  right: -200px;
}

.orb-2 {
  width: 600px;
  height: 600px;
  background: var(--accent-purple);
  bottom: -200px;
  left: -100px;
  animation-delay: -5s;
}

.orb-3 {
  width: 500px;
  height: 500px;
  background: var(--accent);
  top: 50%;
  left: 50%;
  animation-delay: -10s;
}

@keyframes pulse {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.4; }
  50% { transform: translate(30px, -30px) scale(1.2); opacity: 0.6; }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  text-align: center;
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: 32px;
  padding: 60px 40px;
  box-shadow: var(--shadow-glass);
}

.hero-card h1 {
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 24px;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -2px;
}

.hero-subtitle {
  font-size: clamp(24px, 4vw, 36px);
  color: var(--text-primary);
  margin-bottom: 16px;
  font-weight: 400;
}

.hero-description {
  font-size: clamp(18px, 2.5vw, 22px);
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.7;
}

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

.btn-primary,
.btn-secondary {
  padding: 18px 36px;
  border-radius: 980px;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background: var(--gradient-1);
  color: white;
  box-shadow: 0 10px 40px rgba(0, 102, 204, 0.4);
}

.btn-primary:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 20px 60px rgba(0, 102, 204, 0.6);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--glass-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--primary);
  background: rgba(0, 102, 204, 0.1);
  transform: translateY(-4px);
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  opacity: 0;
  animation: fadeIn 1s ease forwards;
  animation-delay: 1s;
}

.mouse {
  width: 28px;
  height: 44px;
  border: 2px solid var(--text-secondary);
  border-radius: 16px;
  position: relative;
}

.wheel {
  width: 4px;
  height: 10px;
  background: var(--text-secondary);
  border-radius: 2px;
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll 2s infinite;
}

@keyframes scroll {
  0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0.5; transform: translateX(-50%) translateY(14px); }
}

@keyframes fadeIn {
  to { opacity: 1; }
}

/* Sections */
section {
  padding: 120px 40px;
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 80px;
}

.section-title {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 700;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
  background: linear-gradient(180deg, #FFFFFF 0%, #B0B8C8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: clamp(18px, 2.5vw, 22px);
  color: var(--text-secondary);
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.service-card {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 40px 32px;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-1);
  opacity: 0;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-12px);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

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

.service-icon {
  font-size: 56px;
  margin-bottom: 24px;
  display: block;
}

.service-card h3 {
  font-size: 24px;
  margin-bottom: 12px;
  font-weight: 600;
}

.service-card p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: 16px;
}

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

.service-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.service-feature::before {
  content: '✓';
  color: var(--accent);
  font-weight: 700;
}

/* Tariffs */
.tariff-tabs {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 40px;
  flex-wrap: wrap;
}

.tab {
  padding: 14px 28px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 980px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.tab.active,
.tab:hover {
  background: var(--gradient-1);
  border-color: transparent;
  color: white;
}

.tariffs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.tariff-card {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 40px 32px;
  position: relative;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.tariff-card.popular {
  border-color: var(--primary);
  box-shadow: 0 0 40px rgba(0, 102, 204, 0.3);
}

.tariff-card.popular::before {
  content: 'Популярный';
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 6px 14px;
  background: var(--gradient-1);
  border-radius: 980px;
  font-size: 12px;
  font-weight: 600;
}

.tariff-card:hover {
  transform: translateY(-8px);
  border-color: rgba(255, 255, 255, 0.2);
}

.tariff-name {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.tariff-speed,
.tariff-channels {
  font-size: 18px;
  color: var(--accent);
  margin-bottom: 20px;
  font-weight: 500;
}

.tariff-price {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 24px;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tariff-price span {
  font-size: 18px;
  -webkit-text-fill-color: var(--text-secondary);
}

.tariff-features {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.tariff-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.tariff-feature::before {
  content: '✓';
  color: var(--accent);
  font-weight: 700;
  font-size: 16px;
}

.btn-tariff {
  width: 100%;
  padding: 16px;
  background: var(--gradient-1);
  border: none;
  border-radius: 12px;
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-tariff:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 102, 204, 0.4);
}

/* Bundles */
.bundles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 32px;
}

.bundle-card {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 40px 32px;
  position: relative;
  transition: var(--transition);
}

.bundle-card.popular {
  border-color: var(--accent-purple);
  box-shadow: 0 0 40px rgba(123, 44, 191, 0.3);
}

.bundle-card.popular::before {
  content: 'Выгодно';
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 6px 14px;
  background: var(--gradient-2);
  border-radius: 980px;
  font-size: 12px;
  font-weight: 600;
}

.bundle-card:hover {
  transform: translateY(-8px);
}

.bundle-name {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}

.bundle-description {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: 16px;
}

.bundle-pricing {
  margin-bottom: 24px;
}

.bundle-original {
  font-size: 20px;
  color: var(--text-muted);
  text-decoration: line-through;
  margin-bottom: 8px;
}

.bundle-price {
  font-size: 48px;
  font-weight: 800;
  background: var(--gradient-2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bundle-discount {
  display: inline-block;
  margin-left: 12px;
  padding: 6px 14px;
  background: rgba(255, 0, 110, 0.2);
  border: 1px solid var(--accent-pink);
  border-radius: 980px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-pink);
}

.bundle-includes {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.bundle-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--text-secondary);
}

.bundle-item::before {
  content: '📦';
  font-size: 18px;
}

/* Stats */
.stats {
  background: linear-gradient(180deg, transparent 0%, rgba(0, 102, 204, 0.05) 100%);
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
}

.stats-container {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 60px;
  padding: 60px 40px;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: clamp(48px, 6vw, 72px);
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.stat-number::after {
  content: '+';
  -webkit-text-fill-color: var(--accent);
}

.stat-label {
  font-size: 16px;
  color: var(--text-secondary);
}

/* News */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 32px;
}

.news-card {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.news-card:hover {
  transform: translateY(-8px);
  border-color: rgba(255, 255, 255, 0.2);
}

.news-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.news-content {
  padding: 28px;
}

.news-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

.news-category {
  padding: 4px 12px;
  background: rgba(0, 102, 204, 0.2);
  border-radius: 980px;
  color: var(--accent);
  text-transform: capitalize;
}

.news-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.4;
}

.news-card p {
  color: var(--text-secondary);
  font-size: 15px;
}

/* FAQ */
.faq-container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--primary);
  background: rgba(0, 102, 204, 0.05);
}

.faq-question {
  width: 100%;
  padding: 24px 28px;
  background: transparent;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  text-align: left;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.faq-icon {
  font-size: 24px;
  transition: var(--transition);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding: 0 28px 24px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Contact Form */
.contact-form-container {
  max-width: 600px;
  margin: 0 auto;
}

.contact-form {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 40px;
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 16px 20px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 16px;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.btn-submit {
  width: 100%;
  padding: 18px;
  background: var(--gradient-1);
  border: none;
  border-radius: 12px;
  color: white;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 40px rgba(0, 102, 204, 0.4);
}

/* Footer */
.footer {
  background: rgba(5, 8, 16, 0.8);
  backdrop-filter: var(--blur);
  border-top: 1px solid var(--glass-border);
  padding: 80px 40px 40px;
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.footer-description {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: 15px;
}

.social-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.social-link {
  padding: 10px 18px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 980px;
  color: var(--text-secondary);
  font-size: 13px;
  text-decoration: none;
  transition: var(--transition);
}

.social-link:hover {
  border-color: var(--primary);
  color: var(--text-primary);
  background: rgba(0, 102, 204, 0.1);
}

.footer-column h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-column a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  margin-bottom: 12px;
  transition: var(--transition);
}

.footer-column a:hover {
  color: var(--text-primary);
  transform: translateX(4px);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
}

.contact-label {
  font-size: 13px;
  color: var(--text-muted);
}

.contact-value {
  font-size: 15px;
  color: var(--text-primary);
  text-decoration: none;
}

.contact-value:hover {
  color: var(--accent);
}

.footer-bottom {
  max-width: 1400px;
  margin: 0 auto;
  padding-top: 40px;
  border-top: 1px solid var(--glass-border);
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}

/* Responsive */
@media (max-width: 1024px) {
  .footer-container {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero-card {
    padding: 40px 24px;
  }

  section {
    padding: 80px 24px;
  }

  .services-grid,
  .tariffs-grid,
  .bundles-grid,
  .news-grid {
    grid-template-columns: 1fr;
  }

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

  .stat-number::after {
    content: '+';
  }
}