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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #F8FAFC;
  color: #0F172A;
  line-height: 1.6;
  font-size: 16px;
}

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

ul {
  list-style: none;
}

img, svg {
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* Screen-reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===========================
   Buttons
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 10px 22px;
  border: none;
  border-radius: 12px;
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
  white-space: nowrap;
}

.btn--primary {
  background: #14B8A6;
  color: #fff;
  box-shadow: 0 1px 3px rgba(20, 184, 166, 0.25);
}
.btn--primary:hover,
.btn--primary:focus-visible {
  background: #0D9488;
  box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3);
  transform: translateY(-1px);
}

.btn--secondary {
  background: #fff;
  color: #0F172A;
  border: 1px solid #E2E8F0;
}
.btn--secondary:hover,
.btn--secondary:focus-visible {
  border-color: #14B8A6;
  color: #14B8A6;
}

.btn--block {
  width: 100%;
  padding: 14px 22px;
  font-size: 1rem;
  border-radius: 14px;
}

.btn:focus-visible {
  outline: 2px solid #14B8A6;
  outline-offset: 2px;
}

/* Loading state */
.btn--loading .btn__label { opacity: 0; }
.btn--loading .btn__spinner { display: flex; }
.btn__spinner { display: none; }

/* ===========================
   Navbar
   =========================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 250, 252, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid #E2E8F0;
}

.navbar__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.navbar__logo-icon {
  flex-shrink: 0;
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.navbar__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: #475569;
  transition: color 0.2s;
}
.navbar__link:hover { color: #14B8A6; }

.navbar__cta {
  font-size: 0.875rem;
  padding: 8px 18px;
  border-radius: 10px;
}

/* ===========================
   Hero
   =========================== */
.hero {
  padding: 80px 24px 100px;
}

.hero__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 60px;
  align-items: center;
}

.hero__headline {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: #0F172A;
  margin-bottom: 16px;
}

.hero__subheadline {
  font-size: 1.125rem;
  color: #475569;
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 32px;
}

.hero__bullets {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
}

.hero__bullets li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9375rem;
  color: #0F172A;
  font-weight: 500;
}

.bullet-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Trust badges */
.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  color: #475569;
  font-weight: 500;
  background: #fff;
  border: 1px solid #E2E8F0;
  padding: 6px 14px;
  border-radius: 100px;
}

/* ===========================
   Signup Card
   =========================== */
.signup-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 16px;
  padding: 36px 32px;
  box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
}

.signup-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: #0F172A;
}

/* Form */
.form-group {
  margin-bottom: 16px;
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid #E2E8F0;
  border-radius: 12px;
  font-size: 0.9375rem;
  font-family: inherit;
  color: #0F172A;
  background: #F8FAFC;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input::placeholder {
  color: #94A3B8;
}

.form-input:focus {
  outline: none;
  border-color: #14B8A6;
  box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.15);
  background: #fff;
}

.form-input--error {
  border-color: #DC2626;
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}
.form-input--error:focus {
  border-color: #DC2626;
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

.form-error {
  margin-top: 8px;
  font-size: 0.8125rem;
  color: #DC2626;
  min-height: 1.2em;
}

.signup-card__note {
  margin-top: 12px;
  font-size: 0.8125rem;
  color: #475569;
  font-weight: 500;
  text-align: center;
}

.signup-card__consent {
  margin-top: 8px;
  font-size: 0.75rem;
  color: #94A3B8;
  text-align: center;
  line-height: 1.5;
}

/* Success */
.signup-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 20px 0 8px;
  text-align: center;
}

.signup-success__text {
  font-size: 1rem;
  font-weight: 600;
  color: #16A34A;
}

/* ===========================
   Features
   =========================== */
.features {
  padding: 80px 24px 100px;
  background: #fff;
  border-top: 1px solid #E2E8F0;
}

.features__inner {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.features__heading {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  color: #0F172A;
}

.features__sub {
  font-size: 1.0625rem;
  color: #475569;
  margin-bottom: 56px;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* Feature Card */
.feature-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 16px;
  padding: 36px 28px;
  text-align: left;
  transition: box-shadow 0.25s, transform 0.25s;
}

.feature-card:hover {
  box-shadow: 0 8px 32px rgba(15, 23, 42, 0.08);
  transform: translateY(-4px);
}

.feature-card__icon {
  margin-bottom: 20px;
}

.feature-card__title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #0F172A;
}

.feature-card__desc {
  font-size: 0.9375rem;
  color: #475569;
  line-height: 1.65;
}

/* ===========================
   Footer
   =========================== */
.footer {
  border-top: 1px solid #E2E8F0;
  padding: 40px 24px;
  background: #F8FAFC;
}

.footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__links {
  display: flex;
  gap: 28px;
}

.footer__links a {
  font-size: 0.875rem;
  color: #475569;
  font-weight: 500;
  transition: color 0.2s;
}
.footer__links a:hover { color: #14B8A6; }

.footer__copy {
  font-size: 0.8125rem;
  color: #94A3B8;
}

/* ===========================
   Animations
   =========================== */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeUp 0.7s ease forwards;
}

.fade-up--delayed {
  animation-delay: 0.15s;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Feature cards stagger */
.feature-card {
  opacity: 0;
  transform: translateY(20px);
}

.feature-card.visible {
  animation: fadeUp 0.5s ease forwards;
}
.feature-card.visible:nth-child(2) { animation-delay: 0.1s; }
.feature-card.visible:nth-child(3) { animation-delay: 0.2s; }

/* ===========================
   Responsive
   =========================== */
@media (max-width: 900px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero__card {
    max-width: 480px;
  }

  .features__grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .hero {
    padding: 60px 24px 80px;
  }
}

@media (max-width: 600px) {
  .hero {
    padding: 40px 16px 60px;
  }

  .hero__headline {
    font-size: 1.75rem;
  }

  .hero__subheadline {
    font-size: 1rem;
  }

  .navbar__inner {
    padding: 12px 16px;
  }

  .navbar__link {
    font-size: 0.8125rem;
  }

  .navbar__cta {
    font-size: 0.8125rem;
    padding: 7px 14px;
  }

  .signup-card {
    padding: 28px 20px;
  }

  .features {
    padding: 60px 16px 80px;
  }

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