/* modules/checkout/checkout.css
   /checkout/ buy flow (tool grid, tier grid, PayPal panel) + /activate/.
   Loaded: checkout, activate. Registered in core/assets.php.
   Builds on ui/css tokens and components (tool-card, pricing-card, callout, btn). */

/* ── Page frame ─────────────────────────────────────────────────────────── */
.tz-buy { max-width: 1120px; }
.tz-buy [hidden] { display: none !important; }
.tz-buy-head { max-width: 720px; margin-bottom: 36px; }
.tz-buy-head h1 { margin: 6px 0 10px; }
.tz-buy-lede { color: var(--text-secondary); font-size: 1rem; margin: 0; }
.tz-buy-muted { color: var(--text-muted); font-size: .85rem; }
.tz-mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: .02em; }
.tz-buy-callout { margin: 0 0 28px; }
.tz-buy-callout a { color: var(--accent); }

/* Stepper */
.tz-buy-steps { display: flex; gap: 8px; margin: 28px 0 0; padding: 0; list-style: none; counter-reset: none; }
.tz-buy-step {
    display: flex; align-items: center; gap: 10px; flex: 1 1 0; min-width: 0;
    padding: 10px 14px; border: 1px solid var(--border); border-radius: var(--radius-md);
    background: var(--bg-surface); color: var(--text-muted); font-size: .8rem; font-weight: 600;
    transition: border-color var(--t-normal), color var(--t-normal), background var(--t-normal);
}
.tz-buy-step-num {
    display: inline-flex; align-items: center; justify-content: center; flex: 0 0 26px; height: 26px;
    border-radius: var(--radius-full); border: 1px solid var(--border-hover);
    font-size: .7rem; letter-spacing: .04em; font-variant-numeric: tabular-nums;
}
.tz-buy-step-label { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tz-buy-step.is-current { color: var(--text-primary); border-color: var(--border-accent); background: var(--accent-light); }
.tz-buy-step.is-current .tz-buy-step-num { background: var(--accent); border-color: var(--accent); color: #fff; }
.tz-buy-step.is-done { color: var(--text-secondary); }
.tz-buy-step.is-done .tz-buy-step-num { background: var(--green-light); border-color: rgba(34,197,94,.35); color: #4ade80; }

/* Stages */
.tz-buy-stage { margin: 0 0 44px; scroll-margin-top: calc(var(--nav-h) + 20px); }
.tz-buy-stage-head { margin-bottom: 20px; }
.tz-buy-stage-head h2 { font-size: clamp(1.3rem, 2.2vw, 1.6rem); margin: 0 0 6px; outline: none; }
.tz-buy-stage-head p { color: var(--text-secondary); margin: 0; font-size: .92rem; }
.tz-buy-stage-head--row { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.tz-buy-change {
    display: inline-flex; align-items: center; gap: 6px; font-size: .85rem; font-weight: 600;
    color: var(--text-secondary); text-decoration: none; padding: 6px 2px;
}
.tz-buy-change:hover { color: var(--text-primary); }

/* ── 01 Tool grid ───────────────────────────────────────────────────────── */
.tz-buy-tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
a.tz-buy-tool { color: inherit; text-decoration: none; cursor: pointer; }
a.tz-buy-tool:hover { border-color: var(--border-accent); }
a.tz-buy-tool:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.tz-buy-tool .tool-card-title { font-size: 1.08rem; }
.tz-buy-code { color: var(--text-muted); font-weight: 600; font-size: .85em; }
.tz-buy-go { display: inline-flex; align-items: center; gap: 6px; font-size: .82rem; font-weight: 700; color: var(--text-accent); }
a.tz-buy-tool:hover .tz-buy-go .tz-icon { transform: translateX(3px); }
.tz-buy-go .tz-icon { transition: transform var(--t-fast); }
.tz-buy-tool.is-soon { opacity: .78; }
.tz-buy-tool.is-soon:hover { transform: none; box-shadow: none; }

/* ── 02 Tier grid ───────────────────────────────────────────────────────── */
.tz-buy-tier-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; align-items: stretch; padding-top: 12px; }
.tz-buy-tier { transition: border-color var(--t-normal), box-shadow var(--t-normal), transform var(--t-normal); }
.tz-buy-tier .pricing-features-list { flex: 1; margin-bottom: 22px; }
.tz-buy-tier.is-selected { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), var(--shadow-md); }
.tz-buy-tier.is-selected .tz-buy-pick { background: var(--accent); border-color: var(--accent); color: #fff; }
.tz-buy-price { display: flex; align-items: baseline; gap: 4px; margin: 14px 0 4px; }
.tz-buy-amount { font-size: clamp(2.1rem, 3.6vw, 2.7rem); font-weight: 800; letter-spacing: -.045em; color: var(--text-primary); line-height: 1; }
.tz-buy-per { font-size: .85rem; color: var(--text-secondary); }
.tz-buy-alt { font-size: .85rem; color: var(--text-secondary); margin: 0 0 18px; padding-bottom: 18px; border-bottom: 1px solid var(--border); min-height: 42px; }
.tz-buy-alt strong { color: var(--text-primary); }
.tz-buy-save {
    display: inline-block; margin-left: 6px; padding: 2px 8px; border-radius: var(--radius-full);
    background: var(--green-light); color: #4ade80; font-size: .72rem; font-weight: 700; white-space: nowrap;
}
.tz-buy-note { display: flex; gap: 10px; align-items: flex-start; margin: 18px 0 0; color: var(--text-muted); font-size: .84rem; line-height: 1.6; }
.tz-buy-note .tz-icon { flex: 0 0 auto; margin-top: 3px; }
.tz-buy-note strong { color: var(--text-secondary); }

/* ── 03 Pay panel ───────────────────────────────────────────────────────── */
.tz-buy-pay-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.tz-buy-pay-card, .tz-buy-pay-side {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 26px;
}
.tz-buy-pay-card { position: relative; }
.tz-buy-summary { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr); gap: 10px; margin: 0 0 18px; }
.tz-buy-summary > div { padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--bg-surface); min-width: 0; }
.tz-buy-summary dt { font-size: .72rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 4px; }
.tz-buy-summary dd { margin: 0; font-weight: 700; color: var(--text-primary); overflow-wrap: anywhere; }
.tz-buy-summary--center { grid-template-columns: repeat(2, minmax(0, 180px)); justify-content: center; margin: 18px 0; }
.tz-buy-hint { font-size: .85rem; color: var(--text-secondary); margin: 0 0 14px; }

.tz-pp-frame {
    position: relative; min-height: 140px; padding: 18px; border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: min-height var(--t-normal);
}
.tz-pp-frame[data-state="error"] { background: transparent; padding: 0; min-height: 0; border: 0; }
.tz-pp-loading {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: 10px;
    color: #5b6275; font-size: .85rem; font-weight: 600; background: #fff; border-radius: inherit; z-index: 1;
}
.tz-pp-mount { min-height: 104px; }
.tz-pp-mount a { color: #0b57d0; }
.tz-pp-frame noscript .callout { background: var(--bg-surface); }
.tz-pp-result { margin-top: 4px; }
.tz-buy-pay-card.is-complete .tz-pp-frame,
.tz-buy-pay-card.is-complete .tz-buy-hint { display: none; }
.tz-pp-notice p { margin: 4px 0 12px; font-size: .88rem; }
.tz-pp-notice .btn { width: auto; }

.tz-spinner {
    display: inline-block; width: 18px; height: 18px; border-radius: 50%;
    border: 2px solid rgba(120,120,140,.25); border-top-color: var(--accent);
    animation: tzSpin .8s linear infinite;
}
.tz-spinner--lg { width: 34px; height: 34px; border-width: 3px; }
@keyframes tzSpin { to { transform: rotate(360deg); } }

.tz-buy-pay-side { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.tz-buy-pay-side p { font-size: .86rem; color: var(--text-secondary); margin: 0; }
.tz-buy-pay-side a { color: var(--accent); }
.tz-buy-pay-side a .tz-icon { margin-left: 4px; vertical-align: -2px; }
.tz-pp-qr-wrap { align-self: center; padding: 12px; background: #fff; border-radius: var(--radius-lg); line-height: 0; }
.tz-pp-qr { display: block; width: 168px; height: 168px; object-fit: contain; }
.tz-buy-after { width: 100%; margin-top: 4px; padding-top: 14px; border-top: 1px solid var(--border); }
.tz-buy-after strong { display: block; font-size: .85rem; margin-bottom: 4px; color: var(--text-primary); }

/* Sign-in / verify / blocked gate */
.tz-buy-gate {
    display: flex; gap: 18px; align-items: flex-start; padding: 26px; border-radius: var(--radius-xl);
    border: 1px solid var(--border-accent); background: linear-gradient(135deg, rgba(249,115,22,.07), var(--bg-card) 60%);
}
.tz-buy-gate h2, .tz-buy-gate h3 { font-size: 1.2rem; margin: 0 0 6px; }
.tz-buy-gate p { color: var(--text-secondary); margin: 0; font-size: .92rem; }
.tz-buy-gate-icon {
    display: inline-flex; align-items: center; justify-content: center; flex: 0 0 46px; height: 46px;
    border-radius: 12px; background: var(--accent-light); color: var(--text-accent); border: 1px solid rgba(249,115,22,.25);
}
.tz-buy-gate .tz-dashboard-actions { margin-top: 16px; }

/* Success */
.tz-buy-success {
    text-align: center; padding: 34px 26px; border-radius: var(--radius-xl);
    border: 1px solid rgba(34,197,94,.3); background: linear-gradient(180deg, rgba(34,197,94,.08), var(--bg-card) 70%);
}
.tz-buy-success h2, .tz-buy-success h3 { font-size: 1.5rem; margin: 14px 0 6px; outline: none; }
.tz-buy-success-icon {
    display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px;
    border-radius: 50%; background: var(--green-light); color: #4ade80; border: 1px solid rgba(34,197,94,.35);
    animation: tzPop .35s ease-out;
}
.tz-buy-success-plan { color: var(--text-secondary); margin: 0; }
.tz-dashboard-actions--center { justify-content: center; }
@keyframes tzPop { from { transform: scale(.6); opacity: 0; } to { transform: scale(1); opacity: 1; } }

/* Trust row */
.tz-buy-trust { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 8px 0 0; padding: 0; list-style: none; }
.tz-buy-trust li { display: flex; gap: 10px; align-items: flex-start; font-size: .82rem; color: var(--text-muted); line-height: 1.55; }
.tz-buy-trust .tz-icon { flex: 0 0 auto; color: var(--text-secondary); margin-top: 1px; }
.tz-buy-trust a { color: var(--text-secondary); }

/* ── /activate/ ─────────────────────────────────────────────────────────── */
.tz-activate-grid { margin-bottom: 36px; }
.tz-activate-status { text-align: center; padding: 30px 10px; }
.tz-activate-status h2, .tz-activate-status h3 { font-size: 1.2rem; margin: 16px 0 6px; }
.tz-activate-status p { color: var(--text-secondary); margin: 0; font-size: .9rem; }
.tz-activate-form .callout { margin-bottom: 18px; }
.tz-activate-row {
    display: grid; grid-template-columns: 150px minmax(0, 1fr) auto; gap: 6px 16px; align-items: center;
    padding: 16px 0; border-bottom: 1px solid var(--border);
}
.tz-activate-row--stack { grid-template-columns: minmax(0, 1fr); }
.tz-activate-label { font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); }
.tz-activate-value { display: flex; flex-direction: column; min-width: 0; overflow-wrap: anywhere; }
.tz-activate-value strong { color: var(--text-primary); }
.tz-activate-aside { font-size: .82rem; color: var(--text-secondary); white-space: nowrap; }
.tz-activate-aside:hover { color: var(--text-primary); }
.tz-activate .tz-input, .tz-activate select {
    width: 100%; min-width: 0; box-sizing: border-box; background: var(--bg-input); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 12px 14px; color: var(--text-primary); font-size: 16px;
}
.tz-activate .tz-input:focus-visible, .tz-activate select:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-color: var(--accent); }
.tz-activate [aria-invalid="true"] { border-color: #ff8c87; }
.tz-activate .tz-field-help { font-size: .8rem; color: var(--text-muted); margin: 6px 0 0 !important; line-height: 1.55; } /* !important: account.css pulls .tz-field-help up by 10px (!important) and it overlapped the input */
.tz-activate .tz-field-help code, .tz-activate-help code { font-size: .78rem; color: var(--text-secondary); }
.tz-activate-onfile { display: flex; gap: 8px; align-items: flex-start; margin: 2px 0 0; font-size: .88rem; color: var(--text-secondary); }
.tz-activate-onfile .tz-icon { color: #4ade80; flex: 0 0 auto; margin-top: 3px; }
.tz-activate-onfile code { color: var(--text-primary); }
.tz-activate-more { margin-top: 8px; font-size: .85rem; }
.tz-activate-more summary { cursor: pointer; color: var(--text-secondary); padding: 4px 0; }
.tz-activate-more summary:hover { color: var(--text-primary); }
.tz-activate-more[open] summary { margin-bottom: 8px; }
.tz-activate-form .btn-block { margin-top: 22px; min-height: 46px; font-size: .95rem; }
.tz-activate-help { display: flex; flex-direction: column; gap: 14px; margin: 0; padding: 0; list-style: none; }
.tz-activate-help li { display: flex; gap: 10px; font-size: .84rem; color: var(--text-secondary); line-height: 1.55; }
.tz-activate-help .tz-icon { flex: 0 0 auto; margin-top: 3px; color: var(--text-accent); }
.tz-activate-help strong { display: block; color: var(--text-primary); }

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 960px) {
    .tz-buy-tier-grid { grid-template-columns: 1fr; max-width: 520px; row-gap: 24px; }
    .tz-buy-pay-grid { grid-template-columns: 1fr; }
    .tz-buy-trust { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .tz-buy-steps { gap: 6px; }
    .tz-buy-step { padding: 8px; justify-content: center; }
    .tz-buy-step-label { display: none; }
    .tz-buy-step.is-current .tz-buy-step-label { display: inline; }
    .tz-buy-pay-card, .tz-buy-pay-side, .tz-buy-gate { padding: 20px 16px; }
    .tz-buy-summary { grid-template-columns: 1fr 1fr; }
    .tz-buy-summary > div:first-child { grid-column: 1 / -1; }
    .tz-buy-summary--center { grid-template-columns: 1fr 1fr; }
    .tz-buy-gate { flex-direction: column; }
    .tz-activate-row:not(.tz-activate-row--stack) { grid-template-columns: minmax(0, 1fr) auto; } /* a stacked row (label, input, help) stays one column, or the input collapses to ~30px */
    .tz-activate-row > .tz-activate-label { grid-column: 1 / -1; }
    .tz-pp-frame { padding: 14px 10px; }
}
@media (prefers-reduced-motion: reduce) {
    .tz-spinner { animation-duration: 2.4s; }
    .tz-buy-success-icon { animation: none; }
    .tz-buy-tier, .tz-buy-step, .tz-buy-go .tz-icon { transition: none; }
}