* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); }
body { font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 16px; line-height: 1.45; }
button, input, textarea { font: inherit; }
a { color: inherit; }
button, a, input, textarea { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }

.app-shell { width: min(100%, var(--shell-max)); min-height: 100dvh; margin: 0 auto; display: grid; grid-template-rows: var(--topbar-h) auto minmax(0, 1fr) auto; background: var(--surface); box-shadow: var(--shadow); }
.topbar { min-width: 0; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px var(--gutter); border-bottom: 1px solid var(--line); }
.brand { min-width: 0; display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand img { width: 40px; height: 40px; flex: 0 0 auto; border-radius: 13px; }
.brand span { min-width: 0; display: grid; }
.brand strong { font-size: 14px; line-height: 1.1; letter-spacing: .075em; }
.brand small { overflow: hidden; color: var(--muted); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.utility { display: flex; align-items: center; gap: 6px; }
.utility-link, .wallet-link { min-height: 40px; display: inline-flex; align-items: center; justify-content: center; padding: 0 10px; border: 1px solid var(--line); border-radius: 999px; font-size: 12px; font-weight: 750; text-decoration: none; white-space: nowrap; }
.wallet-link { color: var(--paid); }

.tabs { height: var(--tabs-h); display: flex; align-items: end; gap: 22px; padding: 0 var(--gutter); border-bottom: 1px solid var(--line); overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tabs a { height: 100%; display: inline-flex; align-items: center; border-bottom: 2px solid transparent; color: var(--muted); font-size: 14px; font-weight: 700; text-decoration: none; white-space: nowrap; }
.tabs a.active { border-color: var(--primary); color: var(--text); }

.workspace { min-height: 0; overflow-y: auto; padding: clamp(24px, 6vh, 56px) var(--gutter) calc(var(--bottom-safe) + 12px); overscroll-behavior: contain; }
.eyebrow { margin: 0 0 9px; color: var(--primary); font-size: 12px; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
h1, h2, p { margin-top: 0; }
h1 { max-width: 18ch; margin-bottom: 16px; font-size: clamp(29px, 7vw, 46px); line-height: .99; letter-spacing: -.045em; }
h2 { margin: 28px 0 8px; font-size: 18px; line-height: 1.15; }
p { color: var(--muted); }

.mission-empty, .mission-object, .auth-plane { min-height: min(520px, calc(100dvh - 260px)); display: flex; flex-direction: column; justify-content: center; }
.mission-empty p, .auth-plane > p { max-width: 54ch; }
.auth-plane .button { width: min(100%, 360px); margin-top: 10px; }
.text-link { width: fit-content; margin-top: 20px; color: var(--muted); font-size: 14px; }
.mission-kicker { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; color: var(--primary); font-size: 12px; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.state-badge { padding: 5px 9px; border: 1px solid color-mix(in srgb, var(--primary) 35%, transparent); border-radius: 999px; letter-spacing: 0; text-transform: none; }
.mission-instruction { max-width: 60ch; color: var(--text); font-size: clamp(18px, 4vw, 22px); line-height: 1.4; }
.mission-guidance { margin: 26px 0 0; display: grid; gap: 16px; }
.mission-guidance div { padding-left: 14px; border-left: 2px solid var(--line); }
.mission-guidance dt { margin-bottom: 4px; color: var(--muted); font-size: 12px; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.mission-guidance dd { margin: 0; max-width: 62ch; }

.claim-form { margin-top: 30px; display: grid; gap: 10px; }
.claim-form > label:first-child, .review-item > label { font-size: 13px; font-weight: 750; }
input[type="url"], textarea { width: 100%; padding: 13px 14px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--bg); color: var(--text); }
textarea { margin-top: 6px; resize: vertical; }
.check-row { display: grid; grid-template-columns: 24px 1fr; align-items: start; gap: 9px; margin-top: 5px; font-size: 13px; }
.check-row input { width: 20px; height: 20px; margin: 1px 0 0; accent-color: var(--primary); }
.field-hint { margin: 0; font-size: 12px; }

.bottom-panel { position: fixed; z-index: 20; bottom: 0; width: min(100%, var(--shell-max)); padding: 0 var(--gutter) calc(10px + env(safe-area-inset-bottom)); background: linear-gradient(to bottom, transparent 0, color-mix(in srgb, var(--surface) 92%, transparent) 20px, var(--surface) 44px); }
.bottom-signal { min-height: 34px; display: flex; align-items: center; justify-content: center; gap: 6px; color: var(--muted); font-size: 12px; }
.activity-dots { display: none; gap: 3px; }
.bottom-signal[data-state="activity"] .activity-dots { display: inline-flex; }
.activity-dots i { width: 3px; height: 3px; border-radius: 50%; background: currentColor; animation: dot-pulse 900ms infinite alternate; }
.activity-dots i:nth-child(2) { animation-delay: 150ms; }.activity-dots i:nth-child(3) { animation-delay: 300ms; }
.action-row { min-height: 54px; display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 9px; }
.button { min-height: 50px; display: inline-flex; align-items: center; justify-content: center; padding: 0 18px; border: 1px solid transparent; border-radius: 14px; cursor: pointer; font-weight: 800; text-align: center; text-decoration: none; }
.button.primary { background: var(--primary); color: var(--primary-text); }
.button.secondary { border-color: var(--line); background: var(--surface-strong); color: var(--text); }
.button.danger { border-color: color-mix(in srgb, var(--danger) 40%, transparent); background: transparent; color: var(--danger); }
.button:disabled { cursor: wait; opacity: .55; }

.history-plane > h1, .review-plane > h1, .rules-plane > h1 { font-size: clamp(28px, 6vw, 40px); }
.history-list { list-style: none; margin: 28px 0 0; padding: 0; border-top: 1px solid var(--line); }
.history-list li { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 17px 0; border-bottom: 1px solid var(--line); }
.history-list div { min-width: 0; display: grid; gap: 3px; }
.history-list strong { line-height: 1.2; }
.history-list small { color: var(--muted); }
.history-list a, .review-head a { flex: 0 0 auto; color: var(--primary); font-size: 13px; font-weight: 750; }
.empty-state { min-height: 360px; display: flex; flex-direction: column; justify-content: center; }
.empty-state h1 { margin-bottom: 10px; font-size: 30px; }
.review-list { display: grid; gap: 18px; margin-top: 26px; }
.review-item { padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg); }
.review-head { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.review-head div { display: grid; gap: 4px; }.review-head small { color: var(--muted); }
.review-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; margin-top: 14px; }
.review-actions .button { min-height: 42px; }
.rules-plane { max-width: 64ch; padding-bottom: 24px; }
.inline-error { padding: 10px 12px; border-left: 3px solid var(--danger); background: color-mix(in srgb, var(--danger) 9%, transparent); color: var(--text); }
.toast-region { position: fixed; z-index: 50; top: calc(12px + env(safe-area-inset-top)); left: 50%; width: min(calc(100% - 32px), 480px); transform: translateX(-50%); pointer-events: none; }
.toast { padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--text); color: var(--surface); box-shadow: var(--shadow); }

@keyframes dot-pulse { from { opacity: .25; transform: translateY(0); } to { opacity: 1; transform: translateY(-2px); } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; } }
@media (max-width: 430px) {
  :root { --topbar-h: 66px; --gutter: 16px; }
  .brand img { width: 36px; height: 36px; }.brand small { max-width: 145px; }
  .utility-link { display: none; }.wallet-link { min-height: 38px; padding-inline: 9px; }
  .workspace { padding-top: 28px; }
  .mission-empty, .mission-object, .auth-plane { min-height: min(500px, calc(100dvh - 245px)); }
  .action-row { grid-auto-flow: row; grid-auto-columns: auto; grid-template-columns: 1fr 1.3fr; }
  .action-row .button:only-child { grid-column: 1 / -1; }
  .review-actions { display: grid; grid-template-columns: 1fr 1fr; }.review-actions .button.primary { grid-column: 1 / -1; }
}
@media (max-width: 340px) { .brand small { display: none; }.brand strong { font-size: 12px; }.wallet-link { font-size: 11px; } }