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

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background: #fff;
  color: #111;
  line-height: 1.5;
}

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

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 76px;
  padding: 0 7%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid #eee;
  z-index: 100;
}

.logo {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.navbar nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.navbar nav a {
  font-size: 14px;
  color: #666;
  transition: color 0.2s ease;
}

.navbar nav a:hover {
  color: #111;
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 130px 7% 100px;
}

.hero-inner {
  max-width: 900px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 22px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 2px;
  color: #777;
}

.hero h1 {
  max-width: 900px;
  font-size: clamp(58px, 9vw, 125px);
  line-height: 0.92;
  letter-spacing: -7px;
  font-weight: 800;
}

.hero h1 span {
  display: block;
  color: #999;
}

.hero p {
  max-width: 600px;
  margin-top: 35px;
  font-size: 18px;
  line-height: 1.7;
  color: #666;
}

.hero-buttons {
  display: flex;
  gap: 12px;
  margin-top: 35px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 23px;
  border-radius: 8px;
  border: 1px solid #111;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    background 0.2s ease,
    color 0.2s ease;
}

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

.primary {
  background: #111;
  color: #fff;
}

.primary:hover {
  background: #333;
}

.secondary {
  background: #fff;
  color: #111;
  border-color: #ddd;
}

.secondary:hover {
  background: #f6f6f6;
}

.about-section {
  padding: 180px 7%;
  border-top: 1px solid #eee;
}

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

.about-content h2,
.section-title h2,
.cta-box h2 {
  font-size: clamp(42px, 6vw, 78px);
  line-height: 1;
  letter-spacing: -4px;
}

.about-content p {
  max-width: 600px;
  margin-top: 30px;
  color: #666;
  font-size: 18px;
  line-height: 1.8;
}

.features-section {
  padding: 160px 7%;
  background: #fafafa;
}

.section-title {
  margin-bottom: 70px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: #ddd;
  border: 1px solid #ddd;
}

.feature-card {
  min-height: 300px;
  padding: 45px;
  background: #fff;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-number {
  font-size: 12px;
  font-weight: 800;
  color: #aaa;
}

.feature-card h3 {
  margin-top: 70px;
  font-size: 25px;
}

.feature-card p {
  max-width: 430px;
  margin-top: 15px;
  color: #777;
}

.cta-section {
  padding: 160px 7%;
}

.cta-box {
  padding: 90px 60px;
  text-align: center;
  border: 1px solid #ddd;
  border-radius: 16px;
}

.cta-box p {
  max-width: 500px;
  margin: 25px auto 30px;
  color: #777;
}

footer {
  min-height: 100px;
  padding: 30px 7%;
  border-top: 1px solid #eee;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-brand strong {
  font-size: 14px;
}

.footer-brand span {
  font-size: 12px;
  color: #999;
}

.footer-links {
  display: flex;
  gap: 25px;
}

.footer-links a {
  font-size: 13px;
  color: #777;
}

.footer-links a:hover {
  color: #111;
}


/* AUTH */

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}

.back-link {
  position: fixed;
  top: 30px;
  left: 5%;
  font-size: 14px;
  color: #777;
}

.auth-card {
  width: 100%;
  max-width: 430px;
}

.auth-logo {
  display: block;
  margin-bottom: 70px;
  font-size: 19px;
  font-weight: 800;
}

.auth-card h1 {
  font-size: 58px;
  letter-spacing: -3px;
  line-height: 1;
}

.auth-description {
  margin-top: 15px;
  color: #777;
}

.auth-form {
  margin-top: 35px;
}

.auth-form label {
  display: block;
  margin: 18px 0 8px;
  font-size: 13px;
  font-weight: 700;
}

.auth-form input {
  width: 100%;
  height: 52px;
  padding: 0 15px;
  border: 1px solid #ddd;
  border-radius: 7px;
  outline: none;
  background: #fff;
  font-size: 15px;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

.auth-form input:focus {
  border-color: #111;
  box-shadow: 0 0 0 3px #eee;
}

.full {
  width: 100%;
  margin-top: 25px;
}

.message {
  min-height: 22px;
  margin-top: 15px;
  font-size: 13px;
  text-align: center;
}

.message.error {
  color: #c33;
}

.message.success {
  color: #28733b;
}

.switch {
  margin-top: 25px;
  text-align: center;
  font-size: 14px;
  color: #777;
}

.switch a {
  color: #111;
  font-weight: 700;
}


/* PRIVACY */

.page {
  max-width: 850px;
  margin: 0 auto;
  padding: 150px 30px 100px;
}

.page h1 {
  font-size: clamp(50px, 8vw, 90px);
  letter-spacing: -5px;
  line-height: 1;
}

.page .updated {
  margin-top: 20px;
  color: #999;
  font-size: 13px;
}

.privacy-content {
  margin-top: 80px;
}

.privacy-content section {
  margin-bottom: 55px;
}

.privacy-content h2 {
  margin-bottom: 15px;
  font-size: 25px;
}

.privacy-content p {
  color: #666;
  line-height: 1.8;
}


/* SCROLL REVEAL */

.reveal {
  opacity: 0;
  transform: translateY(45px);
  transition:
    opacity 0.8s ease,
    transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}


/* RESPONSIVE */

@media (max-width: 700px) {

  .navbar {
    padding: 0 20px;
  }

  .navbar nav {
    gap: 15px;
  }

  .navbar nav a:nth-child(1) {
    display: none;
  }

  .hero {
    padding: 120px 25px 80px;
  }

  .hero h1 {
    letter-spacing: -4px;
  }

  .hero p {
    font-size: 16px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .about-section,
  .features-section,
  .cta-section {
    padding: 100px 25px;
  }

  .about-content h2,
  .section-title h2,
  .cta-box h2 {
    letter-spacing: -3px;
  }

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

  .feature-card {
    min-height: 250px;
  }

  .cta-box {
    padding: 60px 25px;
  }

  footer {
    padding: 30px 25px;
    align-items: flex-start;
    flex-direction: column;
  }

  .auth-card {
    max-width: 100%;
  }

  .auth-logo {
    margin-bottom: 50px;
  }

  .page {
    padding-left: 25px;
    padding-right: 25px;
  }
}