@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&display=swap');

/* ==========================================================================
   CSS Variables - Themes
   ========================================================================== */

:root {
  /* Dark theme (default) */
  --primary: #02080B;
  --secondary: #0e171c;
  --accent: #FF395C;
  --accent-hover: #FF586F;
  --text: #B8FFFF;
  --text-secondary: rgba(184, 255, 255, 0.7);
  --glass-bg: rgba(2, 8, 11, 0.60);
  --border-color: rgba(255, 255, 255, 0.1);
  --card-bg: rgba(14, 23, 28, 0.8);

  --border-radius: 20px;
  --blur: blur(10px);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow: 0 8px 24px rgba(255, 57, 92, 0.25);
  --shadow-big: 0 12px 32px rgba(255, 57, 92, 0.20);
}

.light-theme {
  --primary: #f5f7fa;
  --secondary: #ffffff;
  --accent: #FF395C;
  --accent-hover: #e62e4f;
  --text: #1a1a2e;
  --text-secondary: rgba(26, 26, 46, 0.7);
  --glass-bg: rgba(255, 255, 255, 0.80);
  --border-color: rgba(0, 0, 0, 0.1);
  --card-bg: rgba(255, 255, 255, 0.9);
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  --shadow-big: 0 12px 32px rgba(0, 0, 0, 0.15);
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  font-family: 'Montserrat', sans-serif;
}

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

body {
  background: var(--primary);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
}

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

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

/* ==========================================================================
   Navigation
   ========================================================================== */

.glass-nav {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 40px);
  max-width: 1200px;
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  z-index: 1000;
  transition: var(--transition);
}

.glass-nav:hover {
  box-shadow: var(--shadow);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
}

.brand {
  font-size: 1.4rem;
  font-weight: 700;
  background: linear-gradient(45deg, var(--accent), #FF7355);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-menu {
  display: flex;
  gap: 1.5rem;
}

.nav-menu a {
  padding: 0.5rem 1rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 500;
}

.nav-menu a:hover {
  border-color: var(--accent);
  background: rgba(255, 57, 92, 0.05);
}

.nav-controls {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.theme-toggle,
.lang-toggle {
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.5rem;
  cursor: pointer;
  color: var(--text);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover,
.lang-toggle:hover {
  border-color: var(--accent);
  background: rgba(255, 57, 92, 0.05);
}

.lang-dropdown {
  position: relative;
}

.lang-toggle {
  padding: 0.5rem 0.75rem;
  font-weight: 600;
  font-size: 0.85rem;
  gap: 0.25rem;
}

.lang-arrow {
  transition: transform 0.2s ease;
}

.lang-dropdown.open .lang-arrow {
  transform: rotate(180deg);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s ease;
  min-width: 120px;
}

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

.lang-option {
  display: block;
  width: 100%;
  padding: 0.6rem 1rem;
  background: none;
  border: none;
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: background 0.2s ease;
}

.lang-option:hover {
  background: rgba(255, 57, 92, 0.1);
}

.lang-option.active {
  color: var(--accent);
}

.dark-theme .sun-icon { display: block; }
.dark-theme .moon-icon { display: none; }
.light-theme .sun-icon { display: none; }
.light-theme .moon-icon { display: block; }

.burger-menu {
  display: none;
  width: 24px;
  height: 20px;
  position: relative;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

.burger-menu span {
  position: absolute;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: var(--transition);
}

.burger-menu span:nth-child(1) { top: 0; }
.burger-menu span:nth-child(2) { top: 9px; }
.burger-menu span:nth-child(3) { top: 18px; }

.burger-menu.active span:nth-child(1) {
  transform: rotate(45deg);
  top: 9px;
}

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

.burger-menu.active span:nth-child(3) {
  transform: rotate(-45deg);
  top: 9px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 2rem 4rem;
  text-align: center;
}

.hero-content {
  max-width: 800px;
}

.hero-image {
  width: 100%;
  max-width: 900px;
  margin: 0 auto 2rem;
  -webkit-mask-image:
    linear-gradient(to right, transparent, black 15%, black 85%, transparent),
    linear-gradient(to bottom, transparent, black 15%, black 85%, transparent);
  -webkit-mask-composite: source-in;
  mask-image:
    linear-gradient(to right, transparent, black 15%, black 85%, transparent),
    linear-gradient(to bottom, transparent, black 15%, black 85%, transparent);
  mask-composite: intersect;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
}

/* Theme-based image switching */
.hero-img-light {
  display: none;
}

.light-theme .hero-img-dark {
  display: none;
}

.light-theme .hero-img-light {
  display: block;
}

.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 1.5rem;
  line-height: 1.2;
  background: linear-gradient(45deg, var(--text), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-button {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 1rem 2.5rem;
  border: none;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.cta-button:hover {
  background: var(--accent-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  color: white;
}

/* ==========================================================================
   Features Section
   ========================================================================== */

.features {
  padding: 6rem 2rem;
}

.features h2,
.pricing h2,
.faq h2,
.company h2 {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 3rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background: var(--card-bg);
  backdrop-filter: var(--blur);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
}

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

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: rgba(255, 57, 92, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ==========================================================================
   Pricing Section
   ========================================================================== */

.pricing {
  padding: 6rem 2rem;
  background: var(--secondary);
}

.pricing-subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-top: -2rem;
  margin-bottom: 3rem;
}

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

.cards-scroller {
  display: flex;
  gap: 1.5rem;
  padding: 1rem 0;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.cards-scroller::-webkit-scrollbar {
  height: 6px;
}

.cards-scroller::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 50px;
}

.pricing-card {
  flex: 0 0 280px;
  scroll-snap-align: start;
  background: var(--card-bg);
  backdrop-filter: var(--blur);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.pricing-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-big);
}

.pricing-card.free {
  border-color: var(--accent);
  background: rgba(255, 57, 92, 0.05);
}

.pricing-card.popular {
  border-color: var(--accent);
  position: relative;
}

.pricing-card.best-value {
  border-color: #10b981;
}

.plan-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.plan-header h3 {
  font-size: 1.2rem;
}

.badge {
  background: var(--accent);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.best-badge {
  background: #10b981;
}

.price-block {
  margin: 1rem 0;
  flex-grow: 1;
}

.price {
  font-size: 2.5rem;
  font-weight: 700;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.25rem;
}

.price .from {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-secondary);
}

.price .currency {
  font-size: 1.5rem;
}

.per-month {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

.benefits {
  list-style: none;
  margin: 1.5rem 0;
  text-align: left;
}

.benefits li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-secondary);
}

.benefits li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
}

.pricing-card .cta-button {
  width: 100%;
  margin-top: auto;
  padding: 0.875rem 1.5rem;
}

.pricing-card.free .cta-button {
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent);
}

.pricing-card.free .cta-button:hover {
  background: var(--accent);
  color: white;
}

.pricing-note {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 2rem;
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */

.faq {
  padding: 6rem 2rem;
}

.faq-grid {
  max-width: 800px;
  margin: 0 auto;
}

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

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

.faq-item summary {
  padding: 1.5rem;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 3rem;
  font-weight: 500;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--accent);
  transition: var(--transition);
}

.faq-item[open] summary::after {
  content: "-";
}

.faq-item[open] summary {
  border-bottom: 1px solid var(--border-color);
}

.faq-item p {
  padding: 1.5rem;
  color: var(--text-secondary);
}

.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.glass-footer {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 20px;
}

.footer-content {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2rem;
  text-align: center;
}

.legal-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.legal-links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

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

.footer-company {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.footer-company .company-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.footer-company .company-details {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.footer-company .company-support {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.footer-company .company-support a {
  color: var(--accent);
}

.footer-bottom {
  text-align: center;
}

.copyright {
  color: var(--text-secondary);
  font-size: 0.75rem;
}

/* ==========================================================================
   Media Queries
   ========================================================================== */


@media (max-width: 768px) {
  .glass-nav {
    top: 10px;
    width: calc(100% - 20px);
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: var(--blur);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    flex-direction: column;
    gap: 0.5rem;
  }

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

  .nav-menu a {
    display: block;
    padding: 1rem;
    text-align: center;
  }

  .burger-menu {
    display: block;
  }

  .nav-controls {
    margin-right: 1rem;
  }

  .hero {
    padding: 7rem 1.5rem 3rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

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

  .features h2,
  .pricing h2,
  .faq h2,
  .company h2 {
    font-size: 1.8rem;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .pricing-card {
    flex: 0 0 260px;
  }

  .legal-links {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0.75rem 1rem;
  }

  .brand {
    font-size: 1.2rem;
  }

  .hero-image {
    max-width: 300px;
  }

  .hero h1 {
    font-size: 1.6rem;
  }

  .cta-button {
    padding: 0.875rem 2rem;
    font-size: 1rem;
  }

  .pricing-card {
    flex: 0 0 240px;
  }
}