/* ========================================
   VARIABLES & RESET
   ======================================== */

:root {
  /* Colors */
  --color-primary: #43d4aa;
  --color-dark: #102236;
  --color-darker: #262639;
  --color-white: #ffffff;
  --color-gray-light: #f8f9fa;
  --color-gray: #6c757d;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #43d4aa 0%, #38c9a0 100%);
  --gradient-dark: linear-gradient(135deg, #102236 0%, #262639 100%);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;
  
  /* Effects */
  --border-radius: 12px;
  --border-radius-lg: 20px;
  --transition: all 0.3s ease;
  --shadow-sm: 0 2px 8px rgba(16, 34, 54, 0.08);
  --shadow-md: 0 4px 16px rgba(16, 34, 54, 0.12);
  --shadow-lg: 0 8px 32px rgba(16, 34, 54, 0.16);
  --shadow-primary: 0 8px 32px rgba(67, 212, 170, 0.3);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-dark);
  background-color: var(--color-white);
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

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

ul {
  list-style: none;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-label {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-gray);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  text-align: center;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(67, 212, 170, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--color-dark);
  border-color: var(--color-dark);
}

.btn-secondary:hover {
  background: var(--color-dark);
  color: var(--color-white);
}

.btn-lg {
  padding: 1.125rem 2.5rem;
  font-size: var(--font-size-lg);
}

.btn-block {
  width: 100%;
  display: block;
}

/* ========================================
   NAVIGATION
   ======================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
}

.logo-text {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-dark);
  position: relative;
}

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

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  transition: var(--transition);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
  position: relative;
  padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-3xl);
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: var(--gradient-dark);
  opacity: 0.03;
  border-radius: 0 0 0 200px;
  z-index: -1;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
  color: var(--color-dark);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-gray);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.hero-stats {
  display: flex;
  gap: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(16, 34, 54, 0.1);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
}

.hero-image {
  position: relative;
}

.image-placeholder {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--gradient-dark);
  aspect-ratio: 16/10;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ========================================
   FEATURES SECTION
   ======================================== */

.features {
  padding: var(--spacing-3xl) 0;
  background: var(--color-gray-light);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
}

.feature-card {
  background: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, rgba(67, 212, 170, 0.1) 0%, rgba(67, 212, 170, 0.2) 100%);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.feature-icon svg {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--spacing-sm);
}

.feature-description {
  color: var(--color-gray);
  line-height: 1.7;
}

/* ========================================
   BENEFITS SECTION
   ======================================== */

.benefits {
  padding: var(--spacing-3xl) 0;
}

.benefits-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.benefits-image .image-placeholder {
  background: var(--gradient-dark);
  aspect-ratio: 4/3;
}

.benefits-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.benefits-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.benefit-item {
  display: flex;
  gap: var(--spacing-md);
}

.benefit-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.benefit-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-white);
}

.benefit-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--spacing-xs);
}

.benefit-content p {
  color: var(--color-gray);
  line-height: 1.6;
}

/* ========================================
   HOW IT WORKS SECTION
   ======================================== */

.how-it-works {
  padding: var(--spacing-3xl) 0;
  background: var(--color-gray-light);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.step-card {
  background: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.step-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.step-number {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: 800;
  box-shadow: var(--shadow-primary);
}

.step-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, rgba(67, 212, 170, 0.1) 0%, rgba(67, 212, 170, 0.2) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: var(--spacing-xl) auto var(--spacing-md);
}

.step-icon svg {
  width: 40px;
  height: 40px;
  color: var(--color-primary);
}

.step-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--spacing-sm);
}

.step-card p {
  color: var(--color-gray);
  line-height: 1.6;
}

/* ========================================
   SCREENSHOTS SECTION
   ======================================== */

.screenshots {
  padding: var(--spacing-3xl) 0;
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

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

.screenshot-img {
  width: 100%;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--spacing-md);
  background: var(--gradient-dark);
  aspect-ratio: 16/10;
  object-fit: cover;
  transition: var(--transition);
}

.screenshot-item:hover .screenshot-img {
  transform: scale(1.05);
  box-shadow: var(--shadow-primary);
}

.screenshot-label {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-dark);
}

/* ========================================
   PRICING SECTION
   ======================================== */

.pricing {
  padding: var(--spacing-3xl) 0;
  background: var(--color-gray-light);
}

.pricing-notice {
  background: linear-gradient(135deg, rgba(67, 212, 170, 0.1) 0%, rgba(67, 212, 170, 0.05) 100%);
  border: 2px solid var(--color-primary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
  display: flex;
  gap: var(--spacing-lg);
  align-items: flex-start;
}

.notice-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.notice-icon svg {
  width: 28px;
  height: 28px;
  color: var(--color-white);
}

.notice-content h4 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--spacing-sm);
}

.notice-content p {
  color: var(--color-dark);
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
}

.notice-content ul {
  margin: var(--spacing-md) 0;
  padding-left: var(--spacing-lg);
}

.notice-content ul li {
  color: var(--color-dark);
  margin-bottom: var(--spacing-xs);
  position: relative;
  list-style: none;
}

.notice-content ul li::before {
  content: '•';
  position: absolute;
  left: -1rem;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.2rem;
}

.notice-content strong {
  color: var(--color-primary);
  font-weight: 700;
}

.notice-cta {
  margin-top: var(--spacing-md);
  font-weight: 600;
  color: var(--color-primary);
  font-size: var(--font-size-base);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  max-width: 1400px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.pricing-card-featured {
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-primary);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  right: var(--spacing-lg);
  background: var(--gradient-primary);
  color: var(--color-white);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.pricing-name {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--spacing-md);
}

.pricing-price {
  margin-bottom: var(--spacing-md);
}

.price-amount {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-primary);
  display: block;
  line-height: 1;
}

.price-currency {
  font-size: var(--font-size-base);
  color: var(--color-gray);
  font-weight: 500;
}

.pricing-description {
  color: var(--color-gray);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid rgba(16, 34, 54, 0.1);
}

.pricing-features {
  margin-bottom: var(--spacing-xl);
}

.pricing-features li {
  padding: var(--spacing-sm) 0;
  color: var(--color-dark);
  position: relative;
  padding-left: var(--spacing-lg);
}

.pricing-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* ========================================
   CTA SECTION
   ======================================== */

.cta {
  padding: var(--spacing-3xl) 0;
  background: var(--gradient-dark);
  color: var(--color-white);
  text-align: center;
}

.cta-title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
}

.cta-subtitle {
  font-size: var(--font-size-xl);
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
}

.cta .btn-secondary {
  border-color: var(--color-white);
  color: var(--color-white);
}

.cta .btn-secondary:hover {
  background: var(--color-white);
  color: var(--color-dark);
}

/* ========================================
   CONTACT SECTION
   ======================================== */

.contact {
  padding: var(--spacing-3xl) 0;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-3xl);
}

.contact-info h2 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: var(--spacing-md);
}

.contact-info p {
  color: var(--color-gray);
  margin-bottom: var(--spacing-xl);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.contact-item svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.contact-form {
  background: var(--color-gray-light);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  background: var(--color-white);
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  background: var(--color-dark);
  color: var(--color-white);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand h3 {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-brand p {
  opacity: 0.8;
  line-height: 1.6;
}

.footer-column h4 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.footer-column ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-column a {
  opacity: 0.8;
  transition: var(--transition);
}

.footer-column a:hover {
  opacity: 1;
  color: var(--color-primary);
}

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  opacity: 0.6;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 1024px) {
  .hero-content,
  .benefits-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .hero-image {
    order: -1;
  }
  
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .cta-buttons {
    flex-direction: column;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  .features-grid,
  .steps-grid,
  .screenshots-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }
}