* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { min-width: 320px; }
body { margin: 0; min-height: 100vh; background: var(--ds-screen); color: var(--ds-text); font-family: var(--ds-font); }
button, input { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: wait; opacity: .55; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--ds-focus); outline-offset: 3px; }
.topbar { height: 86px; max-width: 1328px; padding: 0 32px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 13px; text-decoration: none; font-size: 18px; font-weight: 700; letter-spacing: -.035em; white-space: nowrap; }
.brand-mark { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 12px; color: var(--ds-text-inverse); background: var(--ds-text); font-size: 24px; line-height: 1; }
.brand-muted { color: var(--ds-text-tertiary); font-weight: 400; }
.topbar-actions { display: flex; align-items: center; gap: 16px; }
.theme-control { display: inline-flex; padding: 4px; border-radius: 999px; background: var(--ds-fill-1); gap: 2px; }
.theme-control button { border: 0; background: transparent; color: var(--ds-text-secondary); padding: 8px 12px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.theme-control button[aria-pressed="true"] { background: var(--ds-surface); color: var(--ds-text); box-shadow: var(--ds-segment-shadow); }
.quiet-button { border: 0; background: var(--ds-fill-1); color: var(--ds-text); padding: 12px 18px; border-radius: 999px; font-size: 13px; font-weight: 650; transition: background var(--ds-motion-state), transform var(--ds-motion-press); }
.quiet-button:hover { background: var(--ds-fill-2); }
.quiet-button:active, .ds-button:active { transform: scale(.97); }
.page { max-width: 1328px; padding: 48px 32px 100px; margin: auto; }
.eyebrow, .step { display: block; color: var(--ds-text-tertiary); font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
h1, h2, p { margin-top: 0; }
.page-heading { margin-bottom: 42px; }
.page-heading h1 { margin: 12px 0 14px; font-size: clamp(48px, 6vw, 82px); letter-spacing: -.065em; line-height: .99; font-weight: 650; }
.page-heading p { max-width: 600px; margin: 0; color: var(--ds-text-secondary); font-size: 17px; line-height: 1.5; }
.admin-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; }
.admin-heading .quiet-button { margin-bottom: 5px; }
.loading-state { min-height: 55vh; display: grid; place-items: center; color: var(--ds-text-secondary); }
.auth-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(340px, 440px); gap: clamp(32px, 7vw, 110px); align-items: center; min-height: min(620px, calc(100vh - 160px)); }
.auth-intro h1 { font-size: clamp(54px, 8vw, 112px); line-height: .95; letter-spacing: -.07em; font-weight: 650; margin: 22px 0 30px; }
.auth-intro p { max-width: 490px; font-size: clamp(18px, 2.2vw, 25px); color: var(--ds-text-secondary); line-height: 1.4; }
.auth-card { padding: 36px; border-radius: 30px; background: var(--ds-surface-2); }
.auth-card-top { display: flex; align-items: flex-start; gap: 17px; margin-bottom: 32px; }
.key-mark { flex: 0 0 auto; display: grid; place-items: center; width: 48px; height: 48px; border-radius: 16px; background: var(--ds-text); color: var(--ds-text-inverse); font-size: 25px; }
.auth-card h2 { font-size: 24px; line-height: 1.15; letter-spacing: -.035em; margin: 3px 0 7px; }
.auth-card-top p, .auth-note { color: var(--ds-text-secondary); font-size: 14px; line-height: 1.5; margin: 0; }
.auth-note { margin-top: 20px; font-size: 13px; }
.field { display: grid; gap: 9px; color: var(--ds-text); font-size: 14px; font-weight: 600; }
.field input { width: 100%; min-height: 54px; border: 1px solid transparent; border-radius: var(--ds-radius-control); padding: 0 17px; background: var(--ds-fill-1); color: var(--ds-text); outline: none; }
.field input:hover { background: var(--ds-fill-2); }
.field input:focus-visible { border-color: var(--ds-focus); background: var(--ds-surface); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ds-focus) 20%, transparent); }
.field input::placeholder { color: var(--ds-text-tertiary); }
.field small { font-size: 12px; line-height: 1.45; font-weight: 400; color: var(--ds-text-tertiary); }
.ds-button.primary { display: inline-flex; justify-content: center; align-items: center; width: 100%; min-height: 54px; border: 0; border-radius: 999px; background: var(--ds-button-main); color: var(--ds-text-inverse); font-weight: 700; font-size: 15px; transition: background var(--ds-motion-state), transform var(--ds-motion-press); }
.ds-button.primary:hover { background: var(--ds-button-main-press); }
#auth-form { display: grid; gap: 18px; }
.notice { min-height: 19px; margin: 13px 0 0; color: var(--ds-success-text); font-size: 13px; line-height: 1.4; }
.notice[data-error="true"] { color: var(--ds-danger-text); }
.workspace { display: grid; grid-template-columns: minmax(0, 780px) minmax(230px, 1fr); gap: clamp(32px, 5vw, 72px); align-items: start; }
.editor { padding: 36px; background: var(--ds-surface-2); border-radius: 30px; }
.section-head h2 { margin: 12px 0 8px; font-size: 30px; letter-spacing: -.045em; line-height: 1.1; }
.section-head p { margin: 0; color: var(--ds-text-secondary); font-size: 15px; line-height: 1.45; }
#invite-form { display: grid; gap: 32px; margin-top: 33px; }
.form-group { border: 0; padding: 0; margin: 0; min-width: 0; }
.form-group legend { padding: 0 0 13px; font-size: 15px; font-weight: 700; }
.site-options { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.site-option, .mode-option { display: flex; align-items: center; gap: 13px; min-height: 74px; border-radius: 20px; background: var(--ds-surface); padding: 14px 16px; cursor: pointer; transition: background var(--ds-motion-state); }
.site-option:hover, .mode-option:hover { background: var(--ds-fill-2); }
.site-option:has(input:checked), .mode-option:has(input:checked) { background: var(--ds-info-fill); }
.site-option input, .mode-option input { accent-color: var(--ds-blue); width: 19px; height: 19px; flex: 0 0 auto; margin: 0; }
.site-option span, .mode-option span { min-width: 0; display: grid; gap: 4px; }
.site-option strong, .mode-option strong { font-size: 14px; line-height: 1.25; font-weight: 650; }
.site-option small, .mode-option small { color: var(--ds-text-secondary); font-size: 12px; line-height: 1.35; }
.mode-options { display: grid; gap: 9px; }
.mode-option { align-items: flex-start; min-height: 78px; }
.mode-option input { margin-top: 2px; }
.duration-options { display: flex; flex-wrap: wrap; gap: 8px; }
.duration-options button { min-height: 38px; border: 0; border-radius: 999px; padding: 0 14px; background: var(--ds-surface); color: var(--ds-text); font-size: 13px; font-weight: 600; }
.duration-options button:hover { background: var(--ds-fill-2); }
.duration-options button[aria-pressed="true"] { background: var(--ds-text); color: var(--ds-text-inverse); }
.date-field { margin-top: 17px; }
.date-field input { max-width: 320px; background: var(--ds-surface); }
.field-summary { color: var(--ds-text-secondary); font-size: 13px; margin: 11px 0 0; }
.guide { padding-top: 7px; color: var(--ds-text-secondary); }
.guide ol { list-style: none; counter-reset: guide; padding: 0; margin: 23px 0 20px; }
.guide li { counter-increment: guide; position: relative; padding: 0 0 27px 43px; line-height: 1.45; font-size: 15px; }
.guide li::before { content: counter(guide); position: absolute; top: 0; left: 0; display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--ds-fill-2); color: var(--ds-text); font-size: 12px; font-weight: 700; }
.guide p { font-size: 13px; line-height: 1.5; color: var(--ds-text-tertiary); }
.issued { margin-top: 78px; }
.issued-head { display: flex; justify-content: space-between; align-items: end; padding-bottom: 17px; border-bottom: 1px solid var(--ds-line); }
.issued-head h2 { margin-bottom: 0; }
.count { color: var(--ds-text-tertiary); font-size: 16px; }
.invite-row { display: flex; justify-content: space-between; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--ds-line); }
.invite-main { min-width: 0; }
.invite-main strong { font-size: 17px; font-weight: 650; }
.invite-main p { margin: 6px 0 7px; color: var(--ds-text-secondary); font-size: 14px; line-height: 1.4; }
.invite-main small { color: var(--ds-text-tertiary); font-size: 12px; }
.invite-right { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 15px; }
.status { padding: 7px 11px; border-radius: 999px; white-space: nowrap; background: var(--ds-fill-1); color: var(--ds-text-secondary); font-size: 12px; font-weight: 650; }
.status.active { color: var(--ds-success-text); background: var(--ds-success-fill); }
.status.revoked, .status.expired { color: var(--ds-danger-text); background: var(--ds-danger-fill); }
.revoke-button { border: 0; background: transparent; color: var(--ds-danger-text); font-size: 13px; font-weight: 650; padding: 10px; border-radius: 999px; }
.revoke-button:hover { background: var(--ds-danger-fill); }
.empty-state { margin: 0; padding: 30px 0; color: var(--ds-text-secondary); font-size: 15px; }
.site-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; max-width: 960px; }
.site-card { position: relative; display: grid; gap: 8px; min-height: 132px; padding: 26px; border-radius: 24px; background: var(--ds-surface-2); text-decoration: none; transition: background var(--ds-motion-state), transform var(--ds-motion-state); }
.site-card:hover { background: var(--ds-fill-2); transform: translateY(-2px); }
.site-card strong { font-size: 20px; letter-spacing: -.03em; }
.site-card small { color: var(--ds-text-secondary); font-size: 13px; }
.site-card span { position: absolute; right: 24px; top: 23px; font-size: 20px; }
.guest-foot { margin-top: 42px; }
.created-dialog { width: min(540px, calc(100vw - 24px)); border: 0; padding: 0; border-radius: 28px; background: var(--ds-surface); color: var(--ds-text); box-shadow: var(--ds-shadow); }
.created-dialog::backdrop { background: rgb(0 0 0 / 48%); }
.dialog-inner { padding: 32px; }
.dialog-inner h2 { font-size: 32px; letter-spacing: -.05em; margin: 12px 0; }
.dialog-inner p { color: var(--ds-text-secondary); font-size: 14px; line-height: 1.5; }
.dialog-inner .field input { font-size: 13px; }
.dialog-actions { display: flex; align-items: center; gap: 10px; margin-top: 24px; }
.dialog-actions .ds-button { width: auto; padding: 0 21px; }

@media (max-width: 900px) {
  .workspace { grid-template-columns: 1fr; }
  .guide { display: none; }
  .auth-layout { grid-template-columns: 1fr; gap: 30px; align-items: start; }
  .auth-intro h1 { font-size: clamp(58px, 10vw, 88px); }
  .auth-card { max-width: 520px; }
}
@media (max-width: 640px) {
  .topbar { height: 76px; padding: 0 20px; }
  .brand { font-size: 16px; }
  .brand-mark { width: 32px; height: 32px; border-radius: 10px; }
  .theme-control { display: none; }
  .page { padding: 45px 20px 72px; }
  .page-heading { margin-bottom: 28px; }
  .page-heading h1 { font-size: clamp(45px, 12vw, 65px); }
  .admin-heading { display: block; }
  .admin-heading .quiet-button { margin-top: 18px; }
  .editor { padding: 25px 20px; border-radius: 24px; }
  .site-options, .site-grid { grid-template-columns: 1fr; }
  .invite-row { display: block; }
  .invite-right { justify-content: flex-start; margin-top: 14px; }
  .issued { margin-top: 56px; }
  .auth-intro h1 { margin: 16px 0 20px; }
  .auth-intro p { font-size: 18px; }
  .auth-card { padding: 24px; border-radius: 24px; }
  .dialog-inner { padding: 24px; }
  .dialog-actions { flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; } }