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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: #FAFAFA;
  color: #18181B;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
}

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

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: #18181B;
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -0.025em;
}

.section-subtitle {
  font-size: 1.125rem;
  color: #71717A;
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: #0F172A;
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 8px;
  transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
  background-color: #1e293b;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.25);
}

.btn-green {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: #10B981;
  color: #fff;
  font-weight: 600;
  border-radius: 10px;
  transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.btn-green:hover {
  background-color: #059669;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.35);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: #0F172A;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 8px;
  border: 1.5px solid #d4d4d8;
  transition: border-color 0.2s, background-color 0.2s;
}

.btn-outline:hover {
  border-color: #0F172A;
  background-color: rgba(15, 23, 42, 0.04);
}

/* ===== ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }
.fade-in-delay-5 { transition-delay: 0.5s; }

/* ===== HEADER / NAVBAR ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(250, 250, 250, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}

.header.scrolled {
  border-bottom-color: #e4e4e7;
  background: rgba(250, 250, 250, 0.95);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: #0F172A;
  letter-spacing: -0.02em;
}

.logo-img {
  height: 32px;
  width: auto;
}

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

.nav-links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: #71717A;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #18181B;
}

.nav-cta {
  margin-left: 8px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: #18181B;
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  width: 100%;
  background: rgba(250, 250, 250, 0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #e4e4e7;
  padding: 24px;
  flex-direction: column;
  gap: 16px;
  z-index: 999;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  font-size: 1rem;
  font-weight: 500;
  color: #18181B;
  padding: 8px 0;
}

.mobile-menu .btn-primary {
  text-align: center;
  margin-top: 8px;
}

/* ===== HERO ===== */
.hero {
  padding: 140px 0 80px;
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

@media (min-width: 1025px) {
  .hero .container {
    grid-template-columns: 1fr 1fr;
  }
}

.hero-content {
  max-width: 560px;
}

.hero-content h1 {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.035em;
  color: #0F172A;
  margin-bottom: 20px;
}

.hero-content p {
  font-size: 1.125rem;
  color: #71717A;
  line-height: 1.7;
  margin-bottom: 32px;
}

/* Hero Form */
.hero-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 420px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: #3f3f46;
}

.form-group input {
  font-family: inherit;
  font-size: 1rem;
  padding: 12px 16px;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  background: #fff;
  color: #18181B;
  width: 100%;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-group input::placeholder {
  color: #a1a1aa;
}

.form-group input:focus {
  border-color: #10B981;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.12);
}

.form-group input.input-error {
  border-color: #ef4444;
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
}

.form-checkbox input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: #10B981;
  cursor: pointer;
  flex-shrink: 0;
  border-radius: 4px;
}

.form-checkbox label {
  font-size: 0.875rem;
  color: #3f3f46;
  cursor: pointer;
  user-select: none;
}

.hero-form-btn {
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  padding: 14px 32px;
  width: 100%;
  background-color: #10B981;
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.hero-form-btn:hover {
  background-color: #059669;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.hero-form-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.form-message {
  font-size: 0.875rem;
  line-height: 1.5;
  display: none;
}

.form-message.success {
  display: block;
  color: #059669;
}

.form-message.error {
  display: block;
  color: #ef4444;
}

.hero-cta-helper {
  font-size: 0.8125rem;
  color: #a1a1aa;
}

/* Hero Screenshot */
.hero-screenshot {
  background: #fff;
  border-radius: 16px;
  border: 1px solid #e4e4e7;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.04);
  overflow: hidden;
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.screenshot-img {
  max-width: 280px;
  width: 100%;
  height: auto;
  opacity: 0.6;
}

/* ===== CREDIBILITY BAR ===== */
.credibility {
  padding: 60px 0;
  border-top: 1px solid #e4e4e7;
  border-bottom: 1px solid #e4e4e7;
  background: #fff;
}

.credibility h3 {
  text-align: center;
  font-size: 0.875rem;
  font-weight: 600;
  color: #a1a1aa;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 24px;
}

.credibility-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.credibility-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #FAFAFA;
  border: 1px solid #e4e4e7;
  border-radius: 100px;
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  color: #3f3f46;
  white-space: nowrap;
  transition: border-color 0.2s, background-color 0.2s;
}

.credibility-tag:hover {
  border-color: #10B981;
  background: #ecfdf5;
}

.credibility-tag .tag-icon {
  font-size: 1rem;
}

/* ===== FEATURES ===== */
.features {
  padding: 100px 0;
}

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

.feature-card {
  background: #fff;
  border: 1px solid #e4e4e7;
  border-radius: 14px;
  padding: 32px 28px;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
}

.feature-card:hover {
  border-color: #d4d4d8;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
  transform: translateY(-4px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: #f4f4f5;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: #18181B;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: 0.9375rem;
  color: #71717A;
  line-height: 1.65;
}

/* ===== HOW IT WORKS ===== */
.how-it-works {
  padding: 100px 0;
  background: #fff;
  border-top: 1px solid #e4e4e7;
  border-bottom: 1px solid #e4e4e7;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 8px;
}

.step {
  text-align: center;
  padding: 0 16px;
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: #0F172A;
  color: #fff;
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.step h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: #18181B;
  margin-bottom: 10px;
}

.step p {
  font-size: 0.9375rem;
  color: #71717A;
  line-height: 1.65;
}

/* ===== PRICING ===== */
.pricing {
  padding: 100px 0;
}

.pricing-card {
  max-width: 520px;
  margin: 0 auto;
  background: #fff;
  border: 2px solid #10B981;
  border-radius: 20px;
  padding: 48px 40px;
  text-align: center;
  box-shadow: 0 8px 40px rgba(16, 185, 129, 0.1);
  position: relative;
}

.pricing-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #10B981;
  background: #ecfdf5;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.pricing-price {
  font-size: 3.5rem;
  font-weight: 800;
  color: #0F172A;
  letter-spacing: -0.03em;
  margin-bottom: 4px;
}

.pricing-price span {
  font-size: 1.125rem;
  font-weight: 500;
  color: #71717A;
}

.pricing-users {
  font-size: 1rem;
  color: #71717A;
  margin-bottom: 32px;
}

.pricing-features {
  text-align: left;
  margin-bottom: 36px;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 0;
  font-size: 0.9375rem;
  color: #3f3f46;
}

.pricing-features li .check {
  color: #10B981;
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.pricing-card .btn-green {
  width: 100%;
  font-size: 1.0625rem;
  padding: 16px 32px;
}

.pricing-helper {
  font-size: 0.8125rem;
  color: #a1a1aa;
  margin-top: 14px;
}

.pricing-enterprise {
  text-align: center;
  margin-top: 40px;
  color: #71717A;
  font-size: 0.9375rem;
}

.pricing-enterprise a {
  color: #0F172A;
  font-weight: 600;
  border-bottom: 1px solid #d4d4d8;
  transition: border-color 0.2s;
}

.pricing-enterprise a:hover {
  border-color: #0F172A;
}

/* ===== FAQ ===== */
.faq {
  padding: 100px 0;
  background: #fff;
  border-top: 1px solid #e4e4e7;
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid #e4e4e7;
}

.faq-question {
  width: 100%;
  background: none;
  text-align: left;
  padding: 20px 0;
  font-size: 1rem;
  font-weight: 600;
  color: #18181B;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: color 0.2s;
}

.faq-question:hover {
  color: #0F172A;
}

.faq-chevron {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform 0.3s;
  color: #a1a1aa;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-answer-inner {
  padding-bottom: 20px;
  font-size: 0.9375rem;
  color: #71717A;
  line-height: 1.7;
}

/* ===== CTA FINAL ===== */
.cta-final {
  padding: 100px 0;
  background: #0F172A;
  text-align: center;
}

.cta-final h2 {
  font-size: 2.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.025em;
}

.cta-final p {
  font-size: 1.125rem;
  color: #94a3b8;
  margin-bottom: 36px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.cta-final .btn-green {
  font-size: 1.0625rem;
  padding: 16px 40px;
}

.cta-final .cta-helper-bottom {
  margin-top: 16px;
  font-size: 0.875rem;
  color: #64748b;
}

/* ===== FOOTER ===== */
.footer {
  padding: 64px 0 32px;
  border-top: 1px solid #e4e4e7;
  background: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.875rem;
  color: #71717A;
  line-height: 1.6;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 0.8125rem;
  font-weight: 700;
  color: #18181B;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: #71717A;
  padding: 5px 0;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: #18181B;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 32px;
  border-top: 1px solid #e4e4e7;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: #a1a1aa;
}

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

.social-links a {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: #f4f4f5;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s;
}

.social-links a:hover {
  background: #e4e4e7;
}

.social-links svg {
  width: 18px;
  height: 18px;
  color: #71717A;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-content {
    max-width: 100%;
    text-align: center;
  }

  .hero-content h1 {
    font-size: 2.5rem;
  }

  .hero-form {
    margin: 0 auto;
    max-width: 420px;
  }

  .hero-screenshot {
    max-width: 560px;
    margin: 0 auto;
  }

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

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

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

  .nav-cta.desktop {
    display: none;
  }

  .hamburger {
    display: flex;
  }

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

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

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

  .section-title {
    font-size: 1.75rem;
  }

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

  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .hero-screenshot {
    min-height: 280px;
    padding: 32px;
  }

  .pricing-card {
    padding: 36px 24px;
  }

  .pricing-price {
    font-size: 2.75rem;
  }

  .credibility-tags {
    flex-wrap: nowrap;
    justify-content: flex-start;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 8px;
    scrollbar-width: none;
  }

  .credibility-tags::-webkit-scrollbar {
    display: none;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .cta-final h2 {
    font-size: 1.75rem;
  }
}

@media (max-width: 400px) {
  .hero-content h1 {
    font-size: 1.75rem;
  }

  .hero-screenshot {
    min-height: 220px;
    padding: 24px;
  }

  .screenshot-img {
    max-width: 180px;
  }
}