/* ============================================
   OOST.APP Modern Dark Fintech Landing
   ============================================ */

/* CSS Variables */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-glass: rgba(255, 255, 255, 0.05);

  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.5);

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

  --gradient-main: linear-gradient(135deg, #8b5cf6 0%, #3b82f6 100%);
  --gradient-card: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(59, 130, 246, 0.1) 100%);
  --gradient-glow: linear-gradient(135deg, rgba(139, 92, 246, 0.3) 0%, rgba(59, 130, 246, 0.3) 100%);

  --border-color: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(139, 92, 246, 0.5);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(139, 92, 246, 0.3);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 24px;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

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

a:hover {
  color: var(--accent-blue);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Section */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-header h2 {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.125rem;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  background: transparent;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 0;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.navbar-brand img {
  height: 40px;
  width: auto;
}

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

.navbar-nav a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

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

.navbar-nav a:hover,
.navbar-nav a.active {
  color: var(--text-primary);
}

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

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
}

.mobile-toggle span {
  width: 25px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-main);
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(139, 92, 246, 0.5);
  color: white;
}

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-purple);
  color: white;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--accent-purple);
}

.btn-outline:hover {
  background: var(--accent-purple);
  color: white;
}

.btn-sm {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
}

.btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
}

.hero-gradient {
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 100%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 60%);
  animation: pulse-slow 8s ease-in-out infinite;
}

.hero-gradient-2 {
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 60%);
  animation: pulse-slow 10s ease-in-out infinite reverse;
}

@keyframes pulse-slow {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.1); }
}

.hero-grid {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-text h1 {
  margin-bottom: 1.5rem;
}

.hero-text h1 span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  max-width: 500px;
}

.hero-brokers {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.hero-brokers span {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.broker-logos {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.broker-logos img {
  height: 24px;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
  filter: grayscale(100%) brightness(2);
}

.broker-logos img:hover {
  opacity: 1;
}

.hero-image {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-phone {
  position: relative;
  z-index: 2;
}

.hero-phone img {
  max-width: 100%;
  height: auto;
  max-height: 600px;
  filter: drop-shadow(0 20px 60px rgba(139, 92, 246, 0.3));
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 300px;
  height: 300px;
  background: var(--gradient-main);
  filter: blur(100px);
  opacity: 0.3;
  z-index: 1;
}

/* Partner Section (Finam) */
.partner-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.partner-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 3rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 3rem;
  align-items: center;
}

.partner-logo img {
  height: 60px;
  filter: brightness(0) invert(1);
}

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

.partner-benefit {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.partner-benefit-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient-main);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.partner-benefit-icon svg {
  width: 24px;
  height: 24px;
  color: white;
}

.partner-benefit h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.partner-benefit p {
  font-size: 0.875rem;
  margin: 0;
}

.partner-benefit .highlight {
  color: var(--accent-purple);
  font-weight: 600;
}

/* Features Cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

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

.feature-card:hover {
  background: var(--bg-glass);
  border-color: var(--border-glow);
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

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

.feature-icon {
  width: 64px;
  height: 64px;
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon {
  background: var(--gradient-main);
  border-color: transparent;
}

.feature-icon svg {
  width: 32px;
  height: 32px;
  color: var(--accent-purple);
  transition: color var(--transition-normal);
}

.feature-card:hover .feature-icon svg {
  color: white;
}

.feature-card h4 {
  margin-bottom: 0.75rem;
}

.feature-card p {
  font-size: 0.9rem;
  margin: 0;
}

/* Functions Section */
.functions-section {
  background: var(--bg-secondary);
}

.functions-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 3rem;
  align-items: center;
}

.functions-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.function-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  opacity: 0;
  transform: translateX(-30px);
  transition: all var(--transition-slow);
}

.function-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.functions-list.right .function-item {
  flex-direction: row-reverse;
  text-align: right;
  transform: translateX(30px);
}

.functions-list.right .function-item.visible {
  transform: translateX(0);
}

.function-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.function-icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent-purple);
}

.function-item h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.function-item p {
  font-size: 0.875rem;
  margin: 0;
}

.functions-phone {
  position: relative;
}

.functions-phone img {
  max-width: 280px;
  filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.5));
}

/* Extras Section */
.extras-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.extras-image img {
  max-width: 100%;
  filter: drop-shadow(0 20px 60px rgba(139, 92, 246, 0.2));
}

.extras-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.extra-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.extra-item:hover {
  background: var(--bg-glass);
  border-color: var(--border-glow);
}

.extra-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-main);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.extra-icon svg {
  width: 20px;
  height: 20px;
  color: white;
}

.extra-item p {
  margin: 0;
  font-size: 0.95rem;
}

/* Screenshots Section */
.screenshots-section {
  background: var(--bg-secondary);
  overflow: hidden;
}

.screenshots-wrapper {
  position: relative;
  padding: 2rem 0;
}

.screenshots-track {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 1rem;
}

.screenshots-track::-webkit-scrollbar {
  display: none;
}

.screenshot-item {
  flex-shrink: 0;
  width: 200px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid var(--border-color);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.screenshot-item:hover {
  transform: scale(1.05);
  border-color: var(--accent-purple);
  box-shadow: var(--shadow-glow);
}

.screenshot-item img {
  width: 100%;
  height: auto;
  display: block;
}

.screenshots-nav {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.screenshots-nav button {
  width: 48px;
  height: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.screenshots-nav button:hover {
  background: var(--accent-purple);
  border-color: var(--accent-purple);
}

/* Pricing Section */
.pricing-section {
  position: relative;
}

.tariffs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.tariff-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.tariff-card.popular {
  border-color: var(--accent-purple);
  background: var(--gradient-card);
}

.tariff-card.popular::before {
  content: 'ПОПУЛЯРНЫЙ';
  position: absolute;
  top: 20px;
  right: -35px;
  background: var(--gradient-main);
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 2rem;
  transform: rotate(45deg);
}

.tariff-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-glow);
  border-color: var(--border-glow);
}

.tariff-header {
  text-align: center;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.tariff-name {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.tariff-depo {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.tariff-price {
  text-align: center;
  margin-bottom: 1.5rem;
}

.tariff-amount {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tariff-currency {
  font-size: 1.5rem;
  font-weight: 600;
}

.tariff-period {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.tariff-features {
  flex: 1;
  margin-bottom: 1.5rem;
}

.tariff-features ul {
  list-style: none;
}

.tariff-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.tariff-features li svg {
  width: 18px;
  height: 18px;
  color: var(--accent-green);
  flex-shrink: 0;
}

.tariff-card .btn {
  width: 100%;
}

.tariffs-loading {
  text-align: center;
  padding: 4rem;
  color: var(--text-muted);
}

.tariffs-loading .spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent-purple);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

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

/* Support / FAQ Section */
.support-section {
  background: var(--bg-secondary);
}

.support-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
}

.support-contact {
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  text-align: center;
}

.support-contact h3 {
  margin-bottom: 1rem;
}

.support-contact p {
  margin-bottom: 1.5rem;
}

.telegram-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #0088cc;
  color: white;
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.telegram-link:hover {
  background: #006699;
  color: white;
  transform: translateY(-2px);
}

.telegram-link svg {
  width: 24px;
  height: 24px;
}

.faq-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.faq-tab {
  padding: 0.75rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.9rem;
}

.faq-tab:hover {
  background: var(--bg-glass);
}

.faq-tab.active {
  background: var(--gradient-main);
  border-color: transparent;
  color: white;
}

.faq-content {
  display: none;
}

.faq-content.active {
  display: block;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
}

.faq-question {
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: var(--bg-glass);
}

.faq-question h4 {
  margin: 0;
  font-size: 1rem;
  font-weight: 500;
}

.faq-question svg {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.faq-item.open .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding: 0 1.5rem 1.25rem;
  margin: 0;
}

/* Download Section */
.download-section {
  text-align: center;
  position: relative;
  overflow: hidden;
}

.download-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-card);
  z-index: -1;
}

.download-content {
  max-width: 600px;
  margin: 0 auto;
}

.download-content h2 {
  margin-bottom: 1rem;
}

.download-content p {
  font-size: 1.125rem;
  margin-bottom: 2rem;
}

.download-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

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

.footer-cta {
  background: var(--gradient-card);
  padding: 4rem 0;
  text-align: center;
}

.footer-cta h3 {
  margin-bottom: 1rem;
}

.footer-cta .btn {
  margin-top: 1rem;
}

.footer-bottom {
  padding: 2rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
}

.footer-brand img {
  height: 32px;
}

.footer-copyright {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

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

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.6s ease-out;
}

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

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: all 0.6s ease-out;
}

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

.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: all 0.6s ease-out;
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-text {
    order: 2;
  }

  .hero-image {
    order: 1;
  }

  .hero-phone img {
    max-height: 400px;
  }

  .hero-text p {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-brokers {
    justify-content: center;
    flex-direction: column;
    gap: 1rem;
  }

  .btn-group {
    justify-content: center;
  }

  .partner-card {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }

  .partner-benefits {
    grid-template-columns: 1fr;
  }

  .partner-benefit {
    justify-content: center;
  }

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

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

  .functions-phone {
    order: -1;
  }

  .functions-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1rem;
  }

  .functions-list.right .function-item {
    flex-direction: row;
    text-align: left;
  }

  .function-item {
    flex: 1 1 calc(50% - 0.5rem);
    min-width: 280px;
  }

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

  .extras-image {
    order: -1;
    text-align: center;
  }

  .extras-image img {
    max-width: 300px;
  }

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

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  .section {
    padding: 60px 0;
  }

  .navbar-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 1.5rem;
    gap: 0;
    border-bottom: 1px solid var(--border-color);
  }

  .navbar-nav.open {
    display: flex;
  }

  .navbar-nav li {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
  }

  .navbar-nav li:last-child {
    border-bottom: none;
  }

  .mobile-toggle {
    display: flex;
  }

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

  .function-item {
    flex: 1 1 100%;
  }

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

  .tariff-card.popular::before {
    font-size: 0.6rem;
    padding: 0.2rem 1.5rem;
    right: -40px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .btn-group {
    flex-direction: column;
  }

  .btn-group .btn {
    width: 100%;
  }

  .hero-phone img {
    max-height: 300px;
  }

  .screenshot-item {
    width: 150px;
  }

  .faq-tabs {
    justify-content: center;
  }

  .faq-tab {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
  }
}

/* Print styles */
@media print {
  .navbar,
  .hero-bg,
  .btn,
  .screenshots-nav {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .section {
    padding: 20px 0;
  }
}