@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+SC:wght@300;400;500;600;700&display=swap');

:root {
  --color-primary: #1a1921;
  --color-secondary: #1c1b22;
  --color-accent: #c4ada8;
  --color-purple: #503ca7;
  --color-blue: #6aa2c1;
  --color-white: #ffffff;
  --color-text: #e8e6ef;
  --color-text-muted: #9a95a8;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-card: rgba(28, 27, 34, 0.7);
  --color-card-hover: rgba(40, 38, 50, 0.8);
  --gradient-purple: linear-gradient(135deg, #503ca7, #6a52d4);
  --gradient-blue: linear-gradient(135deg, #6aa2c1, #4fc3f7);
  --gradient-hero: linear-gradient(180deg, #1a1921 0%, #251f35 50%, #1a1921 100%);
  --gradient-cta: linear-gradient(135deg, #503ca7, #6aa2c1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 30px rgba(80, 60, 167, 0.3);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-primary: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

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

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

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

ul {
  list-style: none;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Header ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}

.header.scrolled {
  background: rgba(26, 25, 33, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 0;
  box-shadow: var(--shadow-md);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--color-white);
}

.logo img {
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

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

.nav-menu a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  position: relative;
}

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

.nav-menu a:hover {
  color: var(--color-white);
}

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

.nav-menu a i {
  font-size: 0.8rem;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

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

.lang-switcher-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  font-family: var(--font-primary);
  transition: var(--transition);
}

.lang-switcher-btn:hover {
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.2);
}

.lang-switcher-btn i {
  font-size: 0.9rem;
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 160px;
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition);
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  overflow: hidden;
}

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

.lang-dropdown a {
  display: block;
  padding: 10px 16px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: var(--transition);
}

.lang-dropdown a:hover,
.lang-dropdown a.active {
  background: rgba(80, 60, 167, 0.15);
  color: var(--color-white);
}

/* CTA Button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-purple);
  color: var(--color-white);
  padding: 10px 24px;
  border-radius: var(--radius-xl);
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  font-family: var(--font-primary);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  opacity: 0;
  transition: var(--transition);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--color-accent);
  padding: 10px 24px;
  border-radius: var(--radius-xl);
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid var(--color-accent);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  font-family: var(--font-primary);
}

.btn-secondary:hover {
  background: rgba(196, 173, 168, 0.1);
  transform: translateY(-2px);
}

.btn-large {
  padding: 16px 40px;
  font-size: 1.1rem;
  border-radius: var(--radius-xl);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: var(--transition);
}

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

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

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

/* ========== Hero ========== */
.hero {
  padding: 140px 0 80px;
  background: var(--gradient-hero);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 50%, rgba(80, 60, 167, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 50%, rgba(106, 162, 193, 0.08) 0%, transparent 60%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-2%, 2%) scale(1.05); }
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(80, 60, 167, 0.2);
  border: 1px solid rgba(80, 60, 167, 0.3);
  color: var(--color-blue);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.hero p {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

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

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}

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

.hero-stat .number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-white);
  display: block;
}

.hero-stat .label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ========== Section Common ========== */
.section {
  padding: 100px 0;
}

.section-alt {
  background: var(--color-secondary);
}

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

.section-header h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* ========== Features ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

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

.feature-card:hover {
  background: var(--color-card-hover);
  transform: translateY(-4px);
  border-color: rgba(80, 60, 167, 0.3);
  box-shadow: var(--shadow-glow);
}

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

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 20px;
  background: rgba(80, 60, 167, 0.15);
  color: var(--color-purple);
}

.feature-card:nth-child(2) .feature-icon {
  background: rgba(106, 162, 193, 0.15);
  color: var(--color-blue);
}

.feature-card:nth-child(3) .feature-icon {
  background: rgba(196, 173, 168, 0.15);
  color: var(--color-accent);
}

.feature-card:nth-child(4) .feature-icon {
  background: rgba(106, 162, 193, 0.15);
  color: var(--color-blue);
}

.feature-card:nth-child(5) .feature-icon {
  background: rgba(80, 60, 167, 0.15);
  color: var(--color-purple);
}

.feature-card:nth-child(6) .feature-icon {
  background: rgba(196, 173, 168, 0.15);
  color: var(--color-accent);
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.features-cta {
  text-align: center;
  margin-top: 48px;
}

/* ========== Use Cases ========== */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.usecase-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}

.usecase-card:hover {
  transform: translateY(-4px);
  border-color: rgba(80, 60, 167, 0.3);
  box-shadow: var(--shadow-md);
}

.usecase-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 20px;
}

.usecase-card:nth-child(1) .usecase-icon {
  background: rgba(80, 60, 167, 0.15);
  color: var(--color-purple);
}

.usecase-card:nth-child(2) .usecase-icon {
  background: rgba(106, 162, 193, 0.15);
  color: var(--color-blue);
}

.usecase-card:nth-child(3) .usecase-icon {
  background: rgba(196, 173, 168, 0.15);
  color: var(--color-accent);
}

.usecase-card:nth-child(4) .usecase-icon {
  background: rgba(80, 60, 167, 0.15);
  color: #8b6fef;
}

.usecase-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 10px;
}

.usecase-card p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ========== Pricing ========== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.pricing-card.popular {
  border-color: var(--color-purple);
  box-shadow: var(--shadow-glow);
  transform: scale(1.03);
}

.pricing-card.popular:hover {
  transform: scale(1.03) translateY(-4px);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-purple);
  color: var(--color-white);
  padding: 4px 16px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}

.pricing-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 8px;
}

.pricing-card .price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 4px;
}

.pricing-card .price span {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.pricing-card .price-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.pricing-features {
  margin-bottom: 28px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--color-text);
}

.pricing-features li i {
  font-size: 0.8rem;
  width: 20px;
  text-align: center;
}

.pricing-features li i.fa-check {
  color: #4ade80;
}

.pricing-features li i.fa-xmark {
  color: #6b6575;
}

.pricing-card .btn-primary,
.pricing-card .btn-secondary {
  width: 100%;
  justify-content: center;
}

/* ========== Testimonials ========== */
.testimonials-overview {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.testimonials-score {
  text-align: center;
}

.testimonials-score .big-score {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1;
}

.testimonials-score .stars {
  color: #fbbf24;
  font-size: 1.1rem;
  margin: 8px 0;
  display: flex;
  gap: 4px;
  justify-content: center;
}

.testimonials-score .count {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.star-bars {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 200px;
}

.star-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.star-bar .bar {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
}

.star-bar .bar-fill {
  height: 100%;
  background: #fbbf24;
  border-radius: 3px;
}

.testimonials-slider {
  position: relative;
  overflow: hidden;
}

.testimonials-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.testimonial-card {
  min-width: 100%;
  padding: 0 12px;
}

.testimonial-card-inner {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 700px;
  margin: 0 auto;
}

.testimonial-stars {
  color: #fbbf24;
  font-size: 0.9rem;
  display: flex;
  gap: 3px;
  margin-bottom: 16px;
}

.testimonial-card-inner blockquote {
  font-size: 1.05rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--gradient-purple);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 600;
  font-size: 0.9rem;
}

.testimonial-author .name {
  font-weight: 600;
  color: var(--color-white);
  font-size: 0.95rem;
}

.testimonial-author .role {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.testimonials-nav {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
}

.testimonials-nav button {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-text);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.testimonials-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 36px;
}

.testimonials-tags span {
  background: rgba(80, 60, 167, 0.12);
  border: 1px solid rgba(80, 60, 167, 0.2);
  color: var(--color-text);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.82rem;
}

/* ========== Comparison ========== */
.comparison-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 24px;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.92rem;
}

.comparison-table th {
  background: rgba(80, 60, 167, 0.1);
  color: var(--color-white);
  font-weight: 600;
  font-size: 0.95rem;
}

.comparison-table th:first-child,
.comparison-table td:first-child {
  text-align: left;
  font-weight: 500;
}

.comparison-table td {
  color: var(--color-text-muted);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table .highlight {
  background: rgba(80, 60, 167, 0.06);
  color: var(--color-white);
  font-weight: 500;
}

.comparison-table .highlight .fa-check {
  color: var(--color-purple);
  font-size: 1rem;
}

.comparison-table .fa-check {
  color: #4ade80;
}

.comparison-table .fa-xmark {
  color: #6b6575;
}

/* ========== FAQ ========== */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(80, 60, 167, 0.3);
}

.faq-item.active {
  border-color: rgba(80, 60, 167, 0.4);
  box-shadow: 0 2px 12px rgba(80, 60, 167, 0.1);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  cursor: pointer;
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  color: var(--color-white);
  font-size: 0.98rem;
  font-weight: 500;
  font-family: var(--font-primary);
  transition: var(--transition);
  gap: 16px;
}

.faq-question:hover {
  background: rgba(80, 60, 167, 0.05);
}

.faq-question i {
  color: var(--color-purple);
  font-size: 0.85rem;
  transition: var(--transition);
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--color-text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* ========== Final CTA ========== */
.final-cta {
  padding: 100px 0;
  background: linear-gradient(135deg, rgba(80, 60, 167, 0.15) 0%, rgba(106, 162, 193, 0.1) 50%, rgba(80, 60, 167, 0.15) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.final-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(80, 60, 167, 0.2) 0%, transparent 70%);
}

.final-cta .container {
  position: relative;
  z-index: 1;
}

.final-cta h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 16px;
}

.final-cta p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 36px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== Footer ========== */
.footer {
  padding: 60px 0 30px;
  border-top: 1px solid var(--color-border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 60px;
  flex-wrap: wrap;
}

.footer-col h4 {
  color: var(--color-white);
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  padding: 4px 0;
}

.footer-col a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

.footer-bottom-links a {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

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

/* ========== Back to Top ========== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-purple);
  color: var(--color-white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 999;
  box-shadow: var(--shadow-md);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

/* ========== Animations ========== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.animate-on-scroll:nth-child(4) { transition-delay: 0.3s; }
.animate-on-scroll:nth-child(5) { transition-delay: 0.4s; }
.animate-on-scroll:nth-child(6) { transition-delay: 0.5s; }

/* ========== Mobile Nav Overlay ========== */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: rgba(26, 25, 33, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.mobile-nav.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav a {
  color: var(--color-white);
  font-size: 1.3rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.mobile-nav .btn-primary {
  margin-top: 16px;
  font-size: 1.1rem;
  padding: 14px 32px;
}

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

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

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }

  .pricing-card.popular {
    transform: none;
  }

  .pricing-card.popular:hover {
    transform: translateY(-4px);
  }
}

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

  .header-right .btn-primary {
    display: none;
  }

  .hamburger {
    display: flex;
  }

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

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat .number {
    font-size: 1.5rem;
  }

  .section {
    padding: 70px 0;
  }

  .section-header h2 {
    font-size: 1.7rem;
  }

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

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

  .footer-content {
    flex-direction: column;
  }

  .footer-links {
    gap: 32px;
  }

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

  .final-cta h2 {
    font-size: 1.8rem;
  }

  .testimonials-overview {
    flex-direction: column;
    gap: 24px;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 12px 16px;
    font-size: 0.82rem;
  }

  .lang-switcher-btn .lang-name {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }

  .hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 20px;
    width: 100%;
    max-width: 320px;
    margin-left: auto;
    margin-right: auto;
  }

  .container {
    padding: 0 16px;
  }
}