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

:root {
  /* Primary palette — fresh blue-green */
  --color-primary: #0066FF;
  --color-primary-dark: #0052CC;
  --color-primary-light: #E8F0FE;

  /* Accent */
  --color-accent: #00C853;
  --color-accent-light: #E8F5E9;

  /* Neutrals */
  --color-bg: #FFFFFF;
  --color-bg-alt: #F7F9FC;
  --color-bg-dark: #0B1120;
  --color-text: #1A1A2E;
  --color-text-secondary: #5A6178;
  --color-text-light: #8B92A8;
  --color-border: #E2E6EF;

  /* Gradient */
  --gradient-primary: linear-gradient(135deg, #0066FF 0%, #00C853 100%);
  --gradient-hero: linear-gradient(135deg, #F7F9FC 0%, #E8F0FE 50%, #E8F5E9 100%);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 16px;
}

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
}

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

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

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}

ul {
  list-style: none;
}

/* ========== CONTAINER ========== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-sm {
  max-width: 720px;
}

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  padding: 12px 24px;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-ghost:hover {
  border-color: var(--color-text);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

.btn-block {
  width: 100%;
}

/* ========== NAVBAR ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s;
}

.navbar.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--color-text);
}

.logo-icon {
  font-size: 1.5rem;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

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

.btn-nav {
  padding: 10px 20px;
  font-size: 0.88rem;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ========== HERO ========== */
.hero {
  padding: 140px 0 80px;
  background: var(--gradient-hero);
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  background: var(--color-accent-light);
  color: #2E7D32;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

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

.hero-sub {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 500px;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-trust {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.trust-item {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

/* Browser mockup */
.browser-mockup {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.browser-dots {
  display: flex;
  gap: 8px;
  padding: 14px 16px;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #FF5F57; }
.dot.yellow { background: #FFBD2E; }
.dot.green { background: #28CA41; }

.browser-bar {
  margin: 0 16px;
  margin-top: -30px;
  margin-left: 60px;
  display: inline-block;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 4px 16px;
  font-size: 0.78rem;
  color: var(--color-text-light);
  position: relative;
  top: -8px;
}

.browser-content {
  padding: 24px;
}

.mock-header {
  height: 14px;
  width: 40%;
  background: var(--color-border);
  border-radius: 4px;
  margin-bottom: 20px;
}

.mock-hero-block {
  height: 100px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  opacity: 0.15;
}

.mock-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

.mock-card {
  height: 70px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

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

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

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

.section-header h2 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* ========== PROBLEM / SOLUTION ========== */
.section-problem {
  padding: 80px 0;
  background: var(--color-bg);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.problem-card,
.solution-card {
  padding: 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.problem-card {
  background: #FFF8F8;
  border-color: #FFE0E0;
}

.solution-card {
  background: var(--color-accent-light);
  border-color: #C8E6C9;
}

.problem-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.problem-card h3,
.solution-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.problem-list li,
.solution-list li {
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.problem-list li::before {
  content: '✕';
  position: absolute;
  left: 0;
  color: #E53935;
  font-weight: 700;
}

.solution-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #2E7D32;
  font-weight: 700;
}

/* ========== STEPS ========== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step-card {
  text-align: center;
  padding: 40px 32px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.step-number {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-light);
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.step-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.step-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.step-card p {
  font-size: 0.93rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ========== EXAMPLES ========== */
.examples-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.example-card {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform 0.3s, box-shadow 0.3s;
}

.example-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.example-visual {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
}

.example-icon {
  font-size: 1.8rem;
}

.example-type {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.example-info h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 4px 0 8px;
}

.example-info p {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ========== FEATURES ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 32px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: transform 0.3s;
}

.feature-card:hover {
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

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

.pricing-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  position: relative;
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.pricing-featured {
  border-color: var(--color-primary);
  border-width: 2px;
  box-shadow: var(--shadow-lg);
  transform: scale(1.04);
}

.pricing-featured:hover {
  transform: scale(1.04) translateY(-4px);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 20px;
  border-radius: 100px;
}

.pricing-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.pricing-period {
  font-size: 0.88rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
}

.pricing-features {
  text-align: left;
  margin-bottom: 32px;
}

.pricing-features li {
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-note {
  text-align: center;
  margin-top: 32px;
  font-size: 0.88rem;
  color: var(--color-text-light);
}

/* ========== FAQ ========== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.3s;
}

.faq-item:hover {
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  padding: 20px 24px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-text-light);
  transition: transform 0.3s;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  padding: 0 24px 20px;
  font-size: 0.93rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ========== CONTACT / CTA ========== */
.section-cta {
  background: var(--color-bg-dark);
  color: #fff;
}

.section-cta .section-header h2 {
  color: #fff;
}

.section-cta .section-header p {
  color: rgba(255,255,255,0.6);
}

.contact-form {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: rgba(255,255,255,0.8);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: var(--font-family);
  font-size: 0.95rem;
  transition: border-color 0.2s, background 0.2s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255,255,255,0.35);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(255,255,255,0.12);
}

.form-group select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='rgba(255,255,255,0.5)' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-group select option {
  background: var(--color-bg-dark);
  color: #fff;
}

.section-cta .btn-primary {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
  font-size: 1.05rem;
}

.section-cta .btn-primary:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
}

/* ========== FOOTER ========== */
.footer {
  background: var(--color-bg-dark);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 60px 0 0;
  color: rgba(255,255,255,0.6);
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

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

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.6;
  max-width: 300px;
}

.footer-links h4 {
  color: #fff;
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.5);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  text-align: center;
  font-size: 0.82rem;
}

/* ========== ANIMATIONS ========== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 2.6rem;
  }

  .hero-inner {
    gap: 40px;
  }
}

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

  .mobile-toggle {
    display: flex;
  }

  /* Mobile menu */
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }

  .btn-nav.active {
    display: inline-flex;
    position: absolute;
    top: calc(72px + var(--mobile-nav-height, 200px));
  }

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

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .hero-visual {
    order: -1;
  }

  .hero-trust {
    flex-direction: column;
    gap: 8px;
  }

  .problem-grid,
  .steps-grid,
  .features-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

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

  .pricing-featured {
    transform: none;
    order: -1;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 24px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .section {
    padding: 60px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .section-header h2 {
    font-size: 1.8rem;
  }
}

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

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

  .hero-ctas {
    flex-direction: column;
  }

  .btn-lg {
    padding: 14px 24px;
    font-size: 0.95rem;
  }

  .step-card,
  .feature-card,
  .pricing-card {
    padding: 28px 24px;
  }
}