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

:root {
  --purple: #9D7BFF;
  --purple-dark: #5B33E6;
  --purple-light: #C4AEFF;
  --frost: #F2F0FF;
  --ink: #1A1A2E;
  --gray: #6b7280;
  --white: #ffffff;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* HEADER */
header {
  padding: 20px 0;
  border-bottom: 1px solid rgba(157, 123, 255, 0.15);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-img {
  height: 36px;
  width: auto;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 50px;
  transition: background 0.15s, color 0.15s;
}

.nav-link:hover,
.nav-link.active {
  background: var(--frost);
  color: var(--purple-dark);
}

/* CONTACT PAGE */
.contact-page {
  padding: 100px 0 80px;
  background: linear-gradient(160deg, var(--frost) 0%, var(--white) 60%);
}

.contact-page h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
  color: var(--ink);
}

.contact-sub {
  font-size: 1.1rem;
  color: var(--gray);
  margin-bottom: 48px;
}

.contact-card {
  display: inline-flex;
  align-items: center;
  gap: 20px;
  background: var(--white);
  border: 1px solid rgba(196, 174, 255, 0.3);
  border-radius: 16px;
  padding: 28px 36px;
}

.contact-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--purple) 0%, var(--purple-dark) 100%);
  border-radius: 12px;
  color: var(--white);
  flex-shrink: 0;
}

.contact-label {
  font-size: 0.85rem;
  color: var(--gray);
  margin-bottom: 4px;
}

.contact-value {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--purple-dark);
  text-decoration: none;
}

.contact-value:hover {
  text-decoration: underline;
}

/* HERO */
.hero {
  padding: 80px 0;
  background: linear-gradient(160deg, var(--frost) 0%, var(--white) 60%);
  overflow: hidden;
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: 64px;
}

.hero-text {
  flex: 1;
  min-width: 0;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 20px;
  color: var(--ink);
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--gray);
  margin-bottom: 36px;
}

.hero-phone {
  flex-shrink: 0;
}

.phone-frame {
  width: 260px;
  border-radius: 40px;
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(91, 51, 230, 0.2), 0 8px 24px rgba(0,0,0,0.1);
  border: 6px solid var(--ink);
  background: var(--ink);
}

.phone-screen {
  width: 100%;
  display: block;
}

@media (max-width: 768px) {
  .hero-inner {
    flex-direction: column;
    text-align: center;
    gap: 40px;
  }

  .hero-sub {
    margin: 0 auto 36px;
  }

  .phone-frame {
    width: 220px;
  }
}

/* BUTTON */
.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--purple) 0%, var(--purple-dark) 100%);
  color: var(--white);
  font-size: 1rem;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.1s;
}

.btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* FEATURES */
.features {
  padding: 80px 0;
  background: var(--white);
}

.features h2 {
  text-align: center;
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 48px;
  color: var(--ink);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}

.feature-card {
  background: var(--frost);
  border-radius: 16px;
  padding: 36px 28px;
  text-align: center;
  border: 1px solid rgba(196, 174, 255, 0.3);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--purple) 0%, var(--purple-dark) 100%);
  border-radius: 14px;
  color: var(--white);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--ink);
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--gray);
}

/* SIGNUP */
.signup {
  padding: 80px 0;
  background: linear-gradient(160deg, var(--frost) 0%, #ede9ff 100%);
  text-align: center;
}

.signup h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--ink);
}

.signup p {
  color: var(--gray);
  margin-bottom: 32px;
}

.signup-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.signup-form input[type="email"] {
  padding: 14px 20px;
  font-size: 1rem;
  border: 2px solid var(--purple-light);
  border-radius: 50px;
  outline: none;
  width: 300px;
  transition: border-color 0.2s;
  background: var(--white);
  color: var(--ink);
}

.signup-form input[type="email"]:focus {
  border-color: var(--purple);
}

.form-feedback {
  margin-top: 16px;
  font-size: 0.95rem;
  min-height: 24px;
  color: var(--purple-dark);
  font-weight: 500;
}

/* FOOTER */
footer {
  padding: 32px 0;
  text-align: center;
  border-top: 1px solid rgba(157, 123, 255, 0.15);
}

footer p {
  font-size: 0.9rem;
  color: var(--gray);
}

/* MOBILE */
@media (max-width: 600px) {
  .hero {
    padding: 64px 0 56px;
  }

  .signup-form {
    flex-direction: column;
    align-items: center;
  }

  .signup-form input[type="email"] {
    width: 100%;
    max-width: 360px;
  }
}