/* SilverStack Premium Early Access — tokens.css design system */

:root {
  --panel: rgba(21, 23, 31, 0.82);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
}

[data-theme="light"] {
  --panel: rgba(255, 255, 255, 0.92);
  --shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  font-family: var(--voice-body-font);
  background:
    radial-gradient(circle at top left, rgba(52, 211, 153, 0.08), transparent 28%),
    radial-gradient(circle at top right, rgba(52, 211, 153, 0.04), transparent 24%),
    linear-gradient(180deg, var(--bg), #040506 100%);
  color: var(--silver2);
}

html[data-theme="light"] body {
  background:
    radial-gradient(circle at top left, rgba(5, 150, 105, 0.06), transparent 26%),
    linear-gradient(180deg, var(--bg), #f0f4f0 100%);
}

.cross-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
}

.page-wrap,
.footer-inner {
  width: min(960px, calc(100vw - 2rem));
  margin: 0 auto;
}

/* Hero */
.premium-hero {
  padding: clamp(56px, 9vw, 100px) 0 40px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.premium-title {
  margin: 0;
  font-family: var(--voice-display-font);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 0.94;
  letter-spacing: -0.04em;
  color: var(--silver1);
}

.premium-sub {
  max-width: 48ch;
  margin: 18px auto 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--silver3);
}

/* Feature grid */
.premium-features {
  padding: 0 0 52px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.feature-card {
  padding: 22px 20px;
  border: 1px solid var(--border);
  background: var(--bg2);
  border-radius: 2px;
}

.feature-icon {
  display: block;
  margin-bottom: 10px;
  font-size: 22px;
}

.feature-card h3 {
  margin: 0 0 8px;
  color: var(--silver1);
  font-family: var(--voice-display-font);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.feature-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--silver3);
}

/* Waitlist */
.waitlist-section {
  max-width: 520px;
  margin: 0 auto;
  padding: 40px 0 clamp(72px, 10vw, 120px);
  text-align: center;
}

.waitlist-title {
  margin: 0;
  font-family: var(--voice-display-font);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--silver1);
}

.waitlist-sub {
  max-width: 42ch;
  margin: 10px auto 24px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--silver3);
}

.waitlist-form {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.waitlist-input {
  flex: 1 1 220px;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--border2);
  background: var(--bg2);
  color: var(--silver1);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 180ms ease;
}

.waitlist-input:focus { border-color: var(--green); }

.waitlist-input::placeholder {
  color: var(--silver4);
}

.waitlist-btn {
  flex-shrink: 0;
  min-height: 42px;
  padding: 0 20px;
  background: var(--green);
  border: none;
  color: #0a0b0d;
  font-size: 12px;
  font-weight: 700;
  font-family: inherit;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity 180ms ease;
}

.waitlist-btn:hover:not(:disabled) { opacity: 0.85; }
.waitlist-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.waitlist-status {
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.waitlist-status.success { color: var(--green); }
.waitlist-status.error   { color: var(--red); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--silver4);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 150ms;
}

.footer-links a:hover { color: var(--silver2); }

.footer-note {
  margin: 0;
  font-size: 12px;
  color: var(--silver4);
}