/* VizoChat - Global Styles */

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

:root {
  --bg: #f7f8fc;
  --surface: #ffffff;
  --text: #151827;
  --muted: #697085;
  --border: #e6e8ef;
  --primary: #5b4bdb;
  --primary-dark: #4939c5;
  --shadow: 0 12px 35px rgba(21, 24, 39, 0.08);
  --radius: 18px;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

/* Header */

.site-header {
  width: 100%;
  min-height: 72px;
  padding: 0 6%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.6px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 600;
}

.nav-menu a {
  transition: color 0.2s ease;
}

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

.nav-login {
  padding: 9px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  background: var(--surface);
}

/* Hero */

.hero {
  min-height: 620px;
  padding: 90px 6%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background:
    radial-gradient(
      circle at 50% 10%,
      rgba(91, 75, 219, 0.14),
      transparent 38%
    ),
    var(--bg);
}

.hero-content {
  width: 100%;
  max-width: 780px;
}

.hero-label,
.section-label {
  margin-bottom: 14px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
}

.hero h1 {
  margin-bottom: 22px;
  font-size: clamp(42px, 8vw, 76px);
  line-height: 1.05;
  letter-spacing: -3px;
}

.hero-description {
  max-width: 620px;
  margin: 0 auto 32px;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  min-height: 50px;
  padding: 13px 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-weight: 700;
  transition:
    transform 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease;
}

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

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

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
}

.guest-info {
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
}

/* Sections */

.features,
.rules {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 90px 6%;
}

.section-heading {
  margin-bottom: 38px;
}

.section-heading h2 {
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1.1;
  letter-spacing: -1.5px;
}

/* Feature Cards */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.feature-card {
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.feature-icon {
  margin-bottom: 18px;
  font-size: 30px;
}

.feature-card h3 {
  margin-bottom: 9px;
  font-size: 19px;
}

.feature-card p {
  color: var(--muted);
  font-size: 14px;
}

/* Rules */

.rules {
  max-width: 1000px;
}

.rules-list {
  display: grid;
  gap: 14px;
}

.rule {
  display: flex;
  gap: 20px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.rule-number {
  min-width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--primary);
  background: rgba(91, 75, 219, 0.1);
  font-size: 12px;
  font-weight: 800;
}

.rule h3 {
  margin-bottom: 5px;
  font-size: 17px;
}

.rule p {
  color: var(--muted);
  font-size: 14px;
}

/* Footer */

.site-footer {
  padding: 50px 6% 25px;
  color: var(--muted);
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto 35px;
  display: flex;
  justify-content: space-between;
  gap: 30px;
}

.footer-content strong {
  color: var(--text);
  font-size: 20px;
}

.footer-content p {
  margin-top: 5px;
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 22px;
  align-items: center;
  font-size: 14px;
  font-weight: 600;
}

.footer-bottom {
  max-width: 1200px;
  margin: auto;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 13px;
}

/* Tablet */

@media (max-width: 850px) {

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

  .hero {
    min-height: 560px;
    padding-top: 70px;
    padding-bottom: 70px;
  }
}

/* Mobile */

@media (max-width: 600px) {

  .site-header {
    min-height: 64px;
    padding: 0 18px;
  }

  .logo {
    font-size: 21px;
  }

  .nav-menu {
    gap: 10px;
    font-size: 13px;
  }

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

  .nav-login {
    padding: 7px 11px;
  }

  .hero {
    padding: 60px 18px;
  }

  .hero h1 {
    letter-spacing: -2px;
  }

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

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

  .btn {
    width: 100%;
  }

  .features,
  .rules {
    padding: 65px 18px;
  }

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

  .rule {
    gap: 14px;
    padding: 18px;
  }

  .footer-content {
    flex-direction: column;
  }

  .footer-links {
    flex-wrap: wrap;
  }
}