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

body {
  min-width: 320px;
  margin: 0;
  background: radial-gradient(circle at 76% 16%, color-mix(in srgb, var(--bua-action) 13%, transparent), transparent 31rem), var(--page-bg);
  color: var(--text-primary);
  font-family: var(--font-body, system-ui, sans-serif);
}

.mobile-preview-skip {
  position: fixed;
  z-index: 20;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  border-radius: 6px;
  background: var(--bua-action);
  color: var(--bua-action-contrast);
  font-weight: 700;
  transform: translateY(-150%);
}
.mobile-preview-skip:focus { transform: none; }

.mobile-preview-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 520px);
  gap: clamp(40px, 7vw, 110px);
  align-items: center;
  width: min(1180px, calc(100% - 40px));
  min-height: calc(100vh - 88px);
  margin: 0 auto;
  padding: clamp(44px, 7vw, 96px) 0;
}

.mobile-preview-intro { min-width: 0; }
.mobile-preview-brand {
  display: inline-flex;
  width: min(190px, 46vw);
  margin-bottom: clamp(46px, 9vh, 92px);
}
.mobile-preview-brand img { display: block; width: 100%; height: auto; }

.mobile-preview-eyebrow,
.mobile-preview-stage-label {
  margin: 0;
  color: var(--text-secondary);
  font-family: var(--font-data, ui-monospace, monospace);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.mobile-preview-eyebrow { display: flex; gap: 10px; align-items: center; }
.mobile-preview-eyebrow span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--status-success);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--status-success) 14%, transparent);
}

.mobile-preview-intro h1 {
  max-width: 760px;
  margin: 20px 0 24px;
  font-family: var(--font-display, system-ui, sans-serif);
  font-size: clamp(3.3rem, 5.2vw, 5.25rem);
  font-weight: 800;
  letter-spacing: -0.055em;
  line-height: 0.91;
}
.mobile-preview-lead {
  max-width: 620px;
  margin: 0;
  color: var(--text-secondary);
  font-size: clamp(1rem, 1.7vw, 1.25rem);
  line-height: 1.6;
}

.mobile-preview-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.mobile-preview-button,
.mobile-preview-reload {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md, 8px);
  background: transparent;
  color: var(--text-primary);
  font: 700 0.75rem var(--font-data, ui-monospace, monospace);
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease, transform 160ms ease;
}
.mobile-preview-button:hover,
.mobile-preview-button:focus-visible,
.mobile-preview-reload:hover,
.mobile-preview-reload:focus-visible { border-color: var(--bua-action); transform: translateY(-2px); }
.mobile-preview-button--primary { border-color: var(--bua-action); background: var(--bua-action); color: var(--bua-action-contrast); }
.mobile-preview-button--primary:hover,
.mobile-preview-button--primary:focus-visible { background: var(--accent-hover); }
.mobile-preview-reload:disabled { cursor: wait; opacity: 0.6; transform: none; }

.mobile-preview-assurance {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  max-width: 680px;
  margin: clamp(48px, 8vh, 78px) 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--border-default);
  list-style: none;
}
.mobile-preview-assurance li { min-width: 0; padding-right: 20px; }
.mobile-preview-assurance strong,
.mobile-preview-assurance span { display: block; }
.mobile-preview-assurance strong { margin-bottom: 7px; color: var(--bua-action); font-size: 0.88rem; }
.mobile-preview-assurance span { color: var(--text-tertiary); font-size: 0.72rem; line-height: 1.45; }

.mobile-preview-stage {
  min-width: 0;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--border-default);
  border-radius: clamp(18px, 3vw, 30px);
  background: color-mix(in srgb, var(--surface-elevated) 90%, transparent);
  box-shadow: var(--shadow-soft, 0 24px 70px rgba(0, 0, 0, 0.2));
}
.mobile-preview-stage-header { display: flex; gap: 18px; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.mobile-preview-stage-header h2 {
  margin: 5px 0 0;
  font: 800 clamp(1.5rem, 3vw, 2rem) var(--font-display, system-ui, sans-serif);
  letter-spacing: -0.035em;
}
.mobile-preview-reload { min-height: 42px; padding-inline: 14px; font-size: 0.68rem; }

.mobile-device {
  width: min(100%, 430px);
  margin: 0 auto;
  padding: 14px 12px 18px;
  border: 1px solid color-mix(in srgb, var(--border-default) 72%, var(--text-primary));
  border-radius: 38px;
  background: var(--surface-bg);
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.24);
}
.mobile-device-speaker { width: 64px; height: 5px; margin: 0 auto 11px; border-radius: 999px; background: var(--border-default); }
.mobile-device-screen {
  position: relative;
  height: min(730px, 73vh);
  min-height: 560px;
  overflow: hidden;
  border: 1px solid var(--border-default);
  border-radius: 25px;
  background: var(--frame-bg);
}
.mobile-device-screen iframe { display: block; width: 100%; height: 100%; border: 0; background: var(--frame-bg); }
.mobile-preview-status,
.mobile-preview-noscript {
  position: absolute;
  z-index: 2;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  padding: 30px;
  background: var(--frame-bg);
  color: var(--text-secondary);
  text-align: center;
}
.mobile-preview-status[hidden] { display: none; }
.mobile-device-home { width: 104px; height: 5px; margin: 13px auto 0; border-radius: 999px; background: var(--border-default); }
.mobile-preview-help {
  max-width: 430px;
  margin: 18px auto 0;
  color: var(--text-tertiary);
  font-size: 0.75rem;
  line-height: 1.55;
  text-align: center;
}

.mobile-preview-footer {
  display: flex;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 24px 0 34px;
  border-top: 1px solid var(--border-default);
  color: var(--text-tertiary);
  font-size: 0.72rem;
}
.mobile-preview-footer nav { display: flex; gap: 18px; }
.mobile-preview-footer a { color: inherit; font-weight: 700; }

@media (max-width: 900px) {
  .mobile-preview-shell { grid-template-columns: 1fr; width: min(700px, calc(100% - 32px)); }
  .mobile-preview-brand { margin-bottom: 46px; }
  .mobile-preview-stage { width: 100%; }
}

@media (max-width: 560px) {
  .mobile-preview-shell { width: min(100% - 24px, 520px); padding: 28px 0 48px; }
  .mobile-preview-intro h1 { font-size: clamp(3rem, 15vw, 4.8rem); }
  .mobile-preview-actions { flex-direction: column; }
  .mobile-preview-button { width: 100%; }
  .mobile-preview-assurance { grid-template-columns: 1fr; gap: 18px; }
  .mobile-preview-assurance li { padding: 0; }
  .mobile-preview-stage { padding: 16px 10px; border-radius: 22px; }
  .mobile-preview-stage-header { align-items: flex-start; }
  .mobile-preview-reload { min-height: 44px; white-space: nowrap; }
  .mobile-device { padding: 10px 8px 14px; border-radius: 30px; }
  .mobile-device-screen { height: 72vh; min-height: 520px; border-radius: 21px; }
  .mobile-preview-footer { align-items: flex-start; flex-direction: column; width: calc(100% - 32px); }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-preview-button,
  .mobile-preview-reload { transition: none; }
}