@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

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

:root {
  --accent: #2563EB;
  --accent-2: #7C3AED;
  --accent-g: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
  --nav-h: 64px;
  --radius: 16px;
  --radius-sm: 10px;

  --bg: #ffffff;
  --bg-2: #f8f9fc;
  --bg-3: #f1f3f9;
  --fg: #0a0a0f;
  --fg-2: #4b5563;
  --fg-3: #9ca3af;
  --border: rgba(0,0,0,.08);
  --card-bg: #ffffff;
  --nav-bg: rgba(255,255,255,.85);
  --shadow: 0 4px 24px rgba(0,0,0,.06);
  --shadow-lg: 0 12px 48px rgba(0,0,0,.1);
}

[data-theme="dark"] {
  --bg: #080b14;
  --bg-2: #0f1421;
  --bg-3: #161d2e;
  --fg: #f0f4ff;
  --fg-2: #8b95b0;
  --fg-3: #4a5568;
  --border: rgba(255,255,255,.07);
  --card-bg: #0f1421;
  --nav-bg: rgba(8,11,20,.85);
  --shadow: 0 4px 24px rgba(0,0,0,.3);
  --shadow-lg: 0 12px 48px rgba(0,0,0,.4);
}

html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  transition: background .2s, color .2s;
  -webkit-font-smoothing: antialiased;
}

/* ─── NAV ─── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  background: var(--nav-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: background .2s;
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  height: 100%; padding: 0 24px;
  display: flex; align-items: center; gap: 32px;
}
.nav-logo {
  font-size: 1.25rem; font-weight: 800; letter-spacing: -.5px;
  background: var(--accent-g);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; text-decoration: none;
  flex-shrink: 0;
}
.nav-links {
  display: flex; gap: 4px; list-style: none; flex: 1;
}
.nav-links a {
  color: var(--fg-2); text-decoration: none; font-size: .9rem; font-weight: 500;
  padding: 6px 12px; border-radius: 8px;
  transition: color .15s, background .15s;
}
.nav-links a:hover, .nav-links a.active { color: var(--fg); background: var(--bg-3); }
.nav-actions { display: flex; gap: 10px; align-items: center; margin-left: auto; }
.theme-btn {
  width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--bg-2); cursor: pointer; font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: background .15s;
}
.theme-btn:hover { background: var(--bg-3); }
.btn { display: inline-flex; align-items: center; gap: 6px; text-decoration: none; font-weight: 600; border-radius: 980px; transition: all .2s; cursor: pointer; border: none; font-family: inherit; }
.btn-primary {
  background: var(--accent-g); color: #fff;
  padding: 10px 20px; font-size: .875rem;
  box-shadow: 0 4px 16px rgba(37,99,235,.3);
}
.btn-primary:hover { opacity: .9; transform: translateY(-1px); box-shadow: 0 6px 24px rgba(37,99,235,.4); }
.btn-outline {
  background: transparent; color: var(--fg);
  padding: 10px 20px; font-size: .875rem;
  border: 1px solid var(--border);
}
.btn-outline:hover { background: var(--bg-2); }
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-hamburger span { display: block; width: 22px; height: 2px; background: var(--fg); border-radius: 2px; transition: all .2s; }

/* ─── MOBILE NAV ─── */
.nav-mobile {
  display: none; flex-direction: column;
  position: fixed; top: var(--nav-h); left: 0; right: 0; z-index: 99;
  background: var(--nav-bg); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border); padding: 12px;
}
.nav-mobile.open { display: flex; }
.nav-mobile a { color: var(--fg-2); text-decoration: none; padding: 10px 16px; border-radius: 8px; font-weight: 500; }
.nav-mobile a:hover { background: var(--bg-3); color: var(--fg); }

/* ─── LAYOUT ─── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
section { padding: 96px 0; }
.section-head { text-align: center; margin-bottom: 56px; }
.section-head p { color: var(--fg-2); font-size: 1.125rem; margin-top: 12px; max-width: 560px; margin-left: auto; margin-right: auto; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.03em; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); font-weight: 800; }
h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 10px; }
p { color: var(--fg-2); }

/* ─── EYEBROW ─── */
.eyebrow {
  display: inline-block; font-size: .8125rem; font-weight: 700; letter-spacing: .06em;
  text-transform: uppercase;
  background: var(--accent-g); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 16px;
}

/* ─── HERO ─── */
.hero {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; padding: calc(var(--nav-h) + 60px) 24px 80px;
  position: relative; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(37,99,235,.12) 0%, transparent 70%),
              radial-gradient(ellipse 60% 40% at 80% 80%, rgba(124,58,237,.08) 0%, transparent 60%);
}
[data-theme="dark"] .hero-bg {
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(37,99,235,.2) 0%, transparent 70%),
              radial-gradient(ellipse 60% 40% at 80% 80%, rgba(124,58,237,.14) 0%, transparent 60%);
}
.hero-content { position: relative; z-index: 1; max-width: 820px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: 980px; padding: 6px 16px; font-size: .8125rem; font-weight: 500;
  color: var(--fg-2); margin-bottom: 28px;
}
.hero-badge-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-g);
  box-shadow: 0 0 0 3px rgba(37,99,235,.2);
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 3px rgba(37,99,235,.2); } 50% { box-shadow: 0 0 0 6px rgba(37,99,235,.05); } }
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 900;
  letter-spacing: -.04em; line-height: 1.05;
}
.hero h1 .gradient {
  background: var(--accent-g);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero p { font-size: clamp(1rem, 2vw, 1.25rem); margin-top: 20px; max-width: 600px; margin-left: auto; margin-right: auto; }
.hero-ctas { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 36px; }
.btn-lg { padding: 16px 36px !important; font-size: 1rem !important; }
.hero-stats { display: flex; gap: 48px; justify-content: center; flex-wrap: wrap; margin-top: 64px; padding-top: 48px; border-top: 1px solid var(--border); }
.hero-stat-num { font-size: 2rem; font-weight: 900; letter-spacing: -.03em; background: var(--accent-g); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-stat-label { font-size: .8125rem; color: var(--fg-3); margin-top: 2px; }

/* ─── EMAIL PREVIEW ─── */
.email-preview {
  display: inline-flex; align-items: center; gap: 0;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 20px; margin-top: 32px;
  font-size: 1.25rem; font-weight: 600; letter-spacing: -.01em;
  font-family: 'SF Mono', 'Fira Mono', monospace;
}
.email-preview .username { color: var(--accent); }
.email-preview .at { color: var(--fg-3); padding: 0 2px; }
.email-preview .domain { color: var(--fg); }

/* ─── DOMAIN CLOUD ─── */
.domain-cloud { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 40px; }
.domain-tag {
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: 980px; padding: 8px 18px;
  font-size: .875rem; font-weight: 600; color: var(--fg-2);
  transition: all .2s; cursor: default;
}
.domain-tag:hover { border-color: var(--accent); color: var(--accent); background: rgba(37,99,235,.06); transform: translateY(-2px); }
.domain-tag.featured { background: rgba(37,99,235,.08); border-color: rgba(37,99,235,.3); color: var(--accent); }

/* ─── CARDS ─── */
.card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px;
  box-shadow: var(--shadow);
  transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card-icon { font-size: 2.5rem; margin-bottom: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ─── HIGHLIGHT SECTION ─── */
.highlight-section { background: var(--bg-2); }

/* ─── PRICING ─── */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: start; }
.pricing-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px 32px;
  box-shadow: var(--shadow);
  transition: transform .2s, box-shadow .2s;
}
.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 20px 60px rgba(37,99,235,.15);
  transform: scale(1.03);
}
.pricing-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.pricing-card.featured:hover { transform: scale(1.03) translateY(-4px); }
.featured-badge {
  display: inline-block; background: var(--accent-g); color: #fff;
  font-size: .75rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
  padding: 4px 12px; border-radius: 980px; margin-bottom: 20px;
}
.pricing-plan { font-size: .9375rem; font-weight: 700; color: var(--fg-2); margin-bottom: 8px; }
.pricing-price { font-size: 3rem; font-weight: 900; letter-spacing: -.04em; line-height: 1; }
.pricing-price span { font-size: 1rem; font-weight: 500; color: var(--fg-2); }
.pricing-desc { font-size: .9375rem; color: var(--fg-2); margin: 12px 0 24px; }
.pricing-divider { height: 1px; background: var(--border); margin-bottom: 24px; }
.pricing-features { display: flex; flex-direction: column; gap: 10px; margin-bottom: 32px; }
.pricing-feature { font-size: .9rem; color: var(--fg-2); display: flex; align-items: flex-start; gap: 10px; }
.pricing-check { color: var(--accent); font-weight: 700; flex-shrink: 0; }
.pricing-cta a { display: block; text-align: center; padding: 14px 24px; border-radius: 12px; font-weight: 700; text-decoration: none; transition: all .2s; }
.pricing-cta .btn-grad { background: var(--accent-g); color: #fff; box-shadow: 0 4px 16px rgba(37,99,235,.3); }
.pricing-cta .btn-grad:hover { opacity: .9; }
.pricing-cta .btn-border { border: 1.5px solid var(--border); color: var(--fg); }
.pricing-cta .btn-border:hover { background: var(--bg-2); }

/* ─── FAQ ─── */
.faq { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 4px; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.faq-q {
  width: 100%; background: none; border: none; cursor: pointer;
  padding: 18px 24px; text-align: left; font-family: inherit; font-size: .9375rem; font-weight: 600;
  color: var(--fg); display: flex; justify-content: space-between; align-items: center; gap: 16px;
  transition: background .15s;
}
.faq-q:hover { background: var(--bg-2); }
.faq-q span { font-size: 1.25rem; color: var(--fg-3); transition: transform .2s; flex-shrink: 0; }
.faq-item.open .faq-q span { transform: rotate(45deg); }
.faq-a { display: none; padding: 0 24px 18px; font-size: .9rem; color: var(--fg-2); }
.faq-item.open .faq-a { display: block; }

/* ─── CTA BANNER ─── */
.cta-banner {
  background: var(--accent-g); border-radius: 24px;
  padding: 72px 48px; text-align: center; color: #fff;
}
.cta-banner h2 { color: #fff; font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
.cta-banner p { color: rgba(255,255,255,.8); margin-top: 12px; font-size: 1.125rem; }
.cta-banner .hero-ctas { margin-top: 32px; }
.btn-white {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 980px; font-size: 1rem; font-weight: 700;
  background: #fff; color: #2563EB; text-decoration: none;
  box-shadow: 0 4px 16px rgba(0,0,0,.15);
  transition: all .2s;
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.2); }

/* ─── FOOTER ─── */
.footer { background: var(--bg-2); border-top: 1px solid var(--border); padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .nav-logo { font-size: 1.3rem; display: inline-block; margin-bottom: 12px; }
.footer-brand p { font-size: .875rem; color: var(--fg-2); max-width: 220px; }
.footer-col h4 { font-size: .875rem; font-weight: 700; margin-bottom: 14px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-col a { color: var(--fg-2); text-decoration: none; font-size: .875rem; transition: color .15s; }
.footer-col a:hover { color: var(--fg); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; border-top: 1px solid var(--border); flex-wrap: wrap; gap: 8px; }
.footer-bottom p { font-size: .8125rem; }

/* ─── SIGNUP PAGE ─── */
.signup-hero { padding: calc(var(--nav-h) + 64px) 24px 0; text-align: center; }
.signup-grid {
  display: grid; grid-template-columns: 1fr 420px; gap: 48px;
  max-width: 980px; margin: 48px auto; padding: 0 24px;
  align-items: start;
}
.signup-form-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 20px; padding: 40px; box-shadow: var(--shadow-lg);
}
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: .875rem; font-weight: 600; margin-bottom: 7px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 16px; border: 1.5px solid var(--border);
  border-radius: 10px; background: var(--bg); color: var(--fg);
  font-family: inherit; font-size: .9375rem;
  transition: border-color .15s, box-shadow .15s;
  outline: none;
}
.form-group input:focus, .form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.form-group input.error { border-color: #ef4444; }
.form-group input.valid { border-color: #22c55e; }
.form-error { font-size: .8125rem; color: #ef4444; margin-top: 5px; display: none; }
.form-error.show { display: block; }

/* Email builder */
.email-builder {
  display: flex; align-items: stretch; gap: 0;
  border: 1.5px solid var(--border); border-radius: 10px; overflow: hidden;
  background: var(--bg);
  transition: border-color .15s, box-shadow .15s;
}
.email-builder:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.email-builder input {
  flex: 1 1 0; min-width: 90px; border: none; border-radius: 0; background: transparent;
  box-shadow: none !important;
  padding: 12px 14px;
}
.email-builder input:focus { box-shadow: none; border-color: transparent; }
.email-builder .at-sign {
  display: flex; align-items: center; padding: 0 8px;
  color: var(--fg-3); font-size: .9rem; font-weight: 600; user-select: none;
}
.email-builder select {
  flex: 0 0 130px; width: 130px; border: none; border-radius: 0;
  border-left: 1.5px solid var(--border);
  background: var(--bg-2); box-shadow: none !important;
  padding: 12px 10px; font-weight: 600;
  cursor: pointer; color: var(--accent);
}
.email-preview-live {
  margin-top: 8px; font-size: .8125rem; color: var(--fg-3);
  display: flex; align-items: center; gap: 6px;
}
.email-preview-live .addr { font-weight: 600; color: var(--fg-2); }
.avail-indicator { width: 7px; height: 7px; border-radius: 50%; background: var(--fg-3); display: inline-block; }
.avail-indicator.available { background: #22c55e; }
.avail-indicator.taken { background: #ef4444; }
.avail-indicator.checking { background: var(--accent); animation: pulse 1s infinite; }

/* Plan selector */
.plan-selector { display: flex; flex-direction: column; gap: 10px; }
.plan-option {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px; border: 1.5px solid var(--border); border-radius: 10px;
  cursor: pointer; transition: all .15s; user-select: none;
}
.plan-option:hover { border-color: var(--accent); background: rgba(37,99,235,.03); }
.plan-option.selected { border-color: var(--accent); background: rgba(37,99,235,.06); }
.plan-option input[type="radio"] { display: none; }
.plan-dot { width: 18px; height: 18px; border-radius: 50%; border: 2px solid var(--border); flex-shrink: 0; transition: all .15s; }
.plan-option.selected .plan-dot { border-color: var(--accent); background: var(--accent); box-shadow: 0 0 0 3px rgba(37,99,235,.2); }
.plan-info { flex: 1; }
.plan-name { font-size: .9375rem; font-weight: 700; }
.plan-desc { font-size: .8125rem; color: var(--fg-3); margin-top: 2px; }
.plan-price { font-size: .9375rem; font-weight: 800; background: var(--accent-g); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

/* Submit area */
.form-submit { margin-top: 28px; }
.btn-submit {
  width: 100%; padding: 15px; background: var(--accent-g); color: #fff;
  border: none; border-radius: 12px; font-family: inherit; font-size: 1rem; font-weight: 700;
  cursor: pointer; transition: all .2s;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.btn-submit:hover { opacity: .9; transform: translateY(-1px); box-shadow: 0 6px 24px rgba(37,99,235,.4); }
.btn-submit:disabled { opacity: .6; cursor: not-allowed; transform: none; }
.form-hint { font-size: .8125rem; color: var(--fg-3); text-align: center; margin-top: 12px; }

/* Feature list in signup sidebar */
.signup-features { display: flex; flex-direction: column; gap: 16px; margin-top: 32px; }
.signup-feature { display: flex; gap: 14px; align-items: flex-start; }
.signup-feature-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: rgba(37,99,235,.1); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
}
.signup-feature strong { font-size: .9375rem; display: block; }
.signup-feature p { font-size: .875rem; color: var(--fg-2); margin-top: 2px; }

/* Alert */
.alert {
  padding: 14px 16px; border-radius: 10px; font-size: .875rem; font-weight: 500;
  display: none; margin-bottom: 20px;
}
.alert.show { display: block; }
.alert-error { background: rgba(239,68,68,.1); color: #dc2626; border: 1px solid rgba(239,68,68,.2); }
.alert-success { background: rgba(34,197,94,.1); color: #16a34a; border: 1px solid rgba(34,197,94,.2); }

/* ─── SUCCESS PAGE ─── */
.success-page {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: var(--nav-h) 24px 48px;
}
.success-card {
  max-width: 520px; width: 100%;
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 24px; padding: 52px 48px; text-align: center;
  box-shadow: var(--shadow-lg);
}
.success-icon { font-size: 4rem; margin-bottom: 24px; }
.success-email {
  display: inline-block; background: rgba(37,99,235,.08); border: 1px solid rgba(37,99,235,.2);
  border-radius: 10px; padding: 10px 20px; font-size: 1.125rem; font-weight: 700;
  color: var(--accent); margin: 20px 0; letter-spacing: -.01em;
  font-family: 'SF Mono', monospace;
}
.server-info {
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: 12px; padding: 20px 24px; margin: 24px 0; text-align: left;
}
.server-info-row { display: flex; justify-content: space-between; align-items: center; padding: 6px 0; }
.server-info-row:not(:last-child) { border-bottom: 1px solid var(--border); }
.server-info-label { font-size: .8125rem; color: var(--fg-3); }
.server-info-value { font-size: .875rem; font-weight: 600; font-family: monospace; color: var(--fg); }

/* ─── SCROLL REVEAL ─── */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .grid-3 { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing-card.featured { transform: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .signup-grid { grid-template-columns: 1fr; }
  .signup-grid .signup-info { order: 2; }
}
@media (max-width: 600px) {
  section { padding: 64px 0; }
  .hero h1 { font-size: 2.2rem; }
  .hero-stats { gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-banner { padding: 48px 24px; }
  .signup-form-card { padding: 28px 20px; }
}