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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-secondary), sans-serif;
  font-size: 1rem;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  line-height: 1.6;
}

/* CSS Design Tokens */
:root {
  --color-light: #fff;
  --color-black: #000;
  --color-text-primary: #232626;
  --color-text-secondary: #586064;
  --color-text-tertiary: #7a858e;
  --color-bg-primary: var(--color-light);
  --color-bg-secondary: #f8f8fd;
  --color-accent: #14c886;
  --color-button-primary: #050909;
  --color-button-secondary: #ccc;
  --color-button-disabled: #f8f8fd;
  --color-button-hover: var(--color-accent);
  --color-badge-light: #f6f7f8;
  --color-icon-dark: #050909;
  --color-icon-grey: #697379;
  --color-icon-accent: var(--color-accent);
  --color-border-light: #ccd1d6;
  --font-family-base: "Clash Display", sans-serif;
  --font-family-secondary: "Inter Tight", sans-serif;
  --font-family-third: "SF Pro Display", sans-serif;
  --font-size-screencast-mobile: 11px;
  --container-width: 1220px;
  --container-padding-x: 16px;
  --transition-duration: .3s;
  --color-text-card: #535353;
}

/* ===== CONTAINER ===== */
.container {
  max-width: var(--container-width);
  padding: 0 var(--container-padding-x);
  margin: 0 auto;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-base), serif;
  font-weight: 800;
  color: var(--color-text-primary);
  line-height: 1.1;
  margin-bottom: 0.75rem;
}

p {
  font-family: var(--font-family-secondary), sans-serif;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}

.text-tertiary {
  color: var(--color-text-tertiary);
  font-size: 0.85rem;
}

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

.font-clash {
  font-family: var(--font-family-base), serif;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-align: center;
  transition: var(--transition-duration) transform var(--transition-duration),
    var(--transition-duration) box-shadow var(--transition-duration),
    var(--transition-duration) background var(--transition-duration);
  border: none;
  cursor: pointer;
  font-family: var(--font-family-secondary), sans-serif;
}

.btn:hover {
  transform: translateY(-2px);
  text-decoration: none;
}

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

.btn-primary {
  background: var(--color-button-primary);
  color: var(--color-light);
  box-shadow: 0 4px 12px rgba(5, 9, 9, 0.3);
}

.btn-primary:hover {
  background: var(--color-accent);
  color: var(--color-light);
  box-shadow: 0 8px 20px rgba(20, 200, 134, 0.4);
}

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

.btn-secondary:hover {
  background: var(--color-button-hover);
  color: var(--color-light);
  border-color: var(--color-accent);
}

.btn-secondary:disabled {
  background: var(--color-button-disabled);
  color: var(--color-text-tertiary);
  cursor: not-allowed;
  border-color: var(--color-border-light);
}

/* ===== HEADER / NAV ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 9, 9, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-light);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 16px;
}

.nav-logo {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-light);
  font-family: var(--font-family-base), serif;
}

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

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--color-text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color var(--transition-duration);
}

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

.nav-lang-toggle {
  display: flex;
  gap: 6px;
  background: var(--color-badge-light);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  padding: 3px;
}

.nav-lang-btn {
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  letter-spacing: 0.02em;
  font-family: var(--font-family-secondary), sans-serif;
  transition: color var(--transition-duration);
}

.nav-lang-btn.active {
  background: var(--color-accent);
  color: var(--color-light);
}

.nav-lang-btn:hover:not(.active) {
  color: var(--color-accent);
}

/* ===== MOBILE MENU BUTTON ===== */
.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px;
  z-index: 101;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-icon-dark);
  margin: 5px 0;
  transition: var(--transition-duration) transform var(--transition-duration),
    var(--transition-duration) opacity var(--transition-duration);
}

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

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* ===== HERO ===== */
.hero {
  padding: 160px 0 100px;
  background: var(--color-bg-primary);
  position: relative;
  overflow: hidden;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.035em;
  margin-bottom: 24px;
  font-family: var(--font-family-base), serif;
  color: var(--color-text-primary);
}

.hero-badge {
  display: inline-block;
  background: var(--color-badge-light);
  border: 1px solid var(--color-border-light);
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--color-text-primary);
  font-weight: 600;
  letter-spacing: 0.01em;
  margin-bottom: 32px;
}

.hero p {
  color: var(--color-text-secondary);
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto 32px;
  font-family: var(--font-family-secondary), sans-serif;
}

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

/* ===== SECTIONS ===== */
section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 80px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: 1.1rem;
}

/* ===== ALTERNATING SECTION BACKGROUNDS ===== */
section.light {
  background: var(--color-bg-primary);
}

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

/* Features section uses light by default */
.features {
  background: var(--color-bg-primary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: 12px;
  padding: 32px;
  transition: var(--transition-duration) transform var(--transition-duration),
    var(--transition-duration) border-color var(--transition-duration),
    var(--transition-duration) box-shadow var(--transition-duration);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-light);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.feature-card p {
  color: var(--color-text-secondary);
  font-size: 0.93rem;
  line-height: 1.45;
}

/* ===== STATS / NUMBERS ===== */
.numbers {
  background: var(--color-bg-primary);
  padding-top: 80px;
  padding-bottom: 80px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 32px;
  text-align: center;
}

.stat-item {
  padding: 20px;
}

.stat-number {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 8px;
  font-family: var(--font-family-base), serif;
}

.stat-label {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

/* ===== SERVICES ===== */
.services {
  background: var(--color-bg-primary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: 12px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: var(--transition-duration) transform var(--transition-duration),
    var(--transition-duration) border-color var(--transition-duration);
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-light);
}

.service-icon {
  font-size: 1.8rem;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.service-card p {
  color: var(--color-text-secondary);
  font-size: 0.93rem;
  line-height: 1.45;
  flex: 1;
}

/* ===== ABOUT ===== */
.about {
  background: var(--color-bg-primary);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  text-align: center;
  margin-top: 48px;
}

.about-stats .stat-number {
  font-size: 2rem;
  color: var(--color-accent);
  font-family: var(--font-family-base), serif;
}

/* ===== TEAM ===== */
.team {
  background: var(--color-bg-primary);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.team-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: 12px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: var(--transition-duration) border-color var(--transition-duration);
}

.team-card:hover {
  border-color: var(--color-border-light);
}

.team-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-badge-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  flex-shrink: 0;
  margin-bottom: 16px;
}

.team-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

.team-info p {
  color: var(--color-text-secondary);
  font-size: 0.88rem;
  line-height: 1.35;
}

/* ===== REVIEWS ===== */
.reviews {
  background: var(--color-bg-secondary);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.review-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: 12px;
  padding: 28px;
  transition: var(--transition-duration) transform var(--transition-duration);
}

.review-card:hover {
  transform: translateY(-3px);
}

.review-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  line-height: 1.45;
  font-style: italic;
}

.review-author {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

/* ===== FAQ ===== */
.faq {
  background: var(--color-bg-primary);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
  transition: var(--transition-duration) border-color var(--transition-duration);
}

.faq-item:hover {
  border-color: var(--color-border-light);
}

.faq-item h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.faq-item p {
  color: var(--color-text-secondary);
  font-size: 0.92rem;
  line-height: 1.45;
}

/* ===== CONTACT ===== */
.contact {
  background: var(--color-bg-primary);
  padding-top: 120px;
  padding-bottom: 120px;
}

.contact-content {
  max-width: 640px;
  margin: 0 auto;
}

.contact-content h2 {
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.contact-content p {
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-button-primary);
  color: var(--color-light);
  padding: 80px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 48px;
  margin-bottom: 64px;
}

.footer-col h3 {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-bottom: 20px;
  color: var(--color-light);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 12px;
}

.footer-col a {
  color: var(--color-text-tertiary);
  font-size: 0.9rem;
  transition: color var(--transition-duration);
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border-light);
  padding-top: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

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

.footer-social {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.social-link {
  color: var(--color-text-tertiary);
  font-size: 0.82rem;
  font-weight: 600;
  transition: color var(--transition-duration);
}

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

/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(5, 9, 9, 0.98);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links a {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border-light);
    color: var(--color-light) !important;
  }

  .nav-lang-toggle {
    width: 100%;
    justify-content: center;
  }

  .nav-lang-btn {
    flex: 1;
    text-align: center;
  }

  .nav-toggle {
    display: block;
  }

  .hero {
    padding: 120px 0 80px;
  }

  .hero h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
  }

  section {
    padding: 60px 0;
  }

  .section-header {
    margin: 0 auto 48px;
  }

  .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 20px;
  }

  .service-grid,
  .features-grid,
  .team-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
  }
}