/* trans2audio — components. Colours come only from tokens in themes.css. */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--font-body); min-height: 100vh; display: flex; flex-direction: column; }
main { flex: 1; }
h1, h2, h3, h4 { font-family: var(--font-head); color: var(--heading); line-height: 1.2; margin: 0 0 .5em; font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
a { color: var(--link); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
img, svg { max-width: 100%; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: 8px; top: -60px; background: var(--surface); color: var(--text); padding: 10px 14px; border-radius: var(--radius-sm); z-index: 100; box-shadow: var(--shadow-lg); }
.skip-link:focus { top: 8px; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--space); }
.narrow { max-width: 760px; }
.muted { color: var(--text-muted); }
.small { font-size: .875rem; }
.center { text-align: center; }
.stack > * + * { margin-top: 12px; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
[hidden] { display: none !important; }

/* ---------------------------------------------------------------- header */
.site-header { position: sticky; top: 0; z-index: 40; background: color-mix(in srgb, var(--surface) 92%, transparent); backdrop-filter: saturate(1.4) blur(8px); border-bottom: 1px solid var(--border); }
.site-header .container { display: flex; align-items: center; gap: 16px; height: 64px; }
.brand { display: inline-flex; align-items: center; text-decoration: none; color: inherit; }
.logo-svg { height: 30px; width: auto; display: block; }
.mark-svg { width: 30px; height: 30px; }
.nav { display: flex; gap: 4px; align-items: center; margin-left: auto; }
.nav a { color: var(--text); text-decoration: none; padding: 8px 12px; border-radius: var(--radius-sm); font-weight: 500; font-size: .95rem; }
.nav a:hover, .nav a[aria-current="page"] { background: var(--surface-2); }
.nav .btn { margin-left: 6px; }
.nav a.btn-primary { color: var(--on-primary); background: var(--primary); }
.nav a.btn-primary:hover { background: var(--primary-hover); }
.site-header .nav-toggle { display: none; margin-left: auto; }
.theme-btn { background: none; border: 1px solid var(--border); color: var(--text); border-radius: 999px; width: 40px; height: 40px; display: inline-grid; place-items: center; cursor: pointer; }
.theme-btn:hover { background: var(--surface-2); }
.theme-btn svg { width: 20px; height: 20px; }
@media (max-width: 900px) {
  .site-header .nav-toggle { display: inline-flex; }
  .nav { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; align-items: stretch; background: var(--surface); border-bottom: 1px solid var(--border); padding: 8px var(--space) 16px; box-shadow: var(--shadow-lg); }
  .nav.open { display: flex; }
  .nav a { padding: 12px; }
  .nav .btn { margin: 8px 0 0; }
  .logo-svg { height: 26px; }
}

/* ---------------------------------------------------------------- buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 18px; border-radius: 999px; border: 1px solid transparent; font: 600 .95rem/1.2 var(--font-body); text-decoration: none; cursor: pointer; transition: background .15s, border-color .15s, transform .05s; white-space: nowrap; }
.btn:active { transform: translateY(1px); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover:not(:disabled) { background: var(--surface-2); }
.btn-ghost { background: transparent; color: var(--text); }
.btn-ghost:hover:not(:disabled) { background: var(--surface-2); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-lg { min-height: 52px; padding: 14px 26px; font-size: 1.05rem; }
.btn-sm { min-height: 36px; padding: 6px 12px; font-size: .85rem; }
.btn-block { width: 100%; }
.btn svg { width: 18px; height: 18px; flex: none; }
.spinner { width: 16px; height: 16px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; display: inline-block; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------------------------------------------------------------- cards, badges, alerts */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow); }
.card-flat { box-shadow: none; }
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 10px; border-radius: 999px; font-size: .78rem; font-weight: 600; background: var(--surface-2); color: var(--text); border: 1px solid var(--border); }
.badge-primary { background: var(--primary-soft); color: var(--on-primary-soft); border-color: transparent; }
.badge-success { background: var(--success-soft); color: var(--success); border-color: transparent; }
.badge-warning { background: var(--warning-soft); color: var(--warning); border-color: transparent; }
.badge-danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.alert { padding: 14px 16px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface-2); color: var(--text); }
.alert-warning { background: var(--warning-soft); color: var(--text); border-color: var(--warning); }
.alert-danger { background: var(--danger-soft); color: var(--text); border-color: var(--danger); }
.alert-success { background: var(--success-soft); color: var(--text); border-color: var(--success); }
.alert strong { color: var(--heading); }
.eyebrow { display: inline-block; font: 600 .8rem/1 var(--font-body); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin-bottom: 14px; }

/* ---------------------------------------------------------------- forms */
.field { display: flex; flex-direction: column; gap: 6px; }
.field > label, .label { font-weight: 600; font-size: .92rem; color: var(--heading); }
.field .hint { font-size: .82rem; color: var(--text-muted); }
.input, select.input, textarea.input { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); background: var(--surface); color: var(--text); font: inherit; }
textarea.input { min-height: 140px; resize: vertical; line-height: 1.55; }
.input:focus { outline: 3px solid var(--focus); outline-offset: 0; border-color: transparent; }
.input[aria-invalid="true"] { border-color: var(--danger); border-width: 2px; }
.field .error, .form-error { color: var(--danger); font-size: .86rem; font-weight: 600; }
.form-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.form-grid .span-2 { grid-column: 1 / -1; }
.check { display: flex; gap: 10px; align-items: flex-start; }
.check input { width: 20px; height: 20px; margin-top: 2px; accent-color: var(--primary); }
input[type="range"] { accent-color: var(--primary); width: 100%; }

/* ---------------------------------------------------------------- hero and sections */
.hero { background: var(--hero); border-bottom: 1px solid var(--border); padding: 72px 0 64px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.hero p.lead { font-size: 1.15rem; color: var(--text-muted); max-width: 560px; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0 14px; }
.hero-visual { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); padding: 22px; }
.wave { display: flex; align-items: center; gap: 4px; height: 64px; margin: 16px 0; }
.wave i { flex: 1; background: var(--primary); border-radius: 4px; min-height: 6px; opacity: .85; }
.wave i:nth-child(3n) { background: var(--accent-strong); }
@media (max-width: 900px) { .hero { padding: 44px 0; } .hero-grid { grid-template-columns: 1fr; gap: 28px; } }
.section { padding: 72px 0; }
.section-alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { max-width: 680px; margin-bottom: 36px; }
.section-head.center { margin-left: auto; margin-right: auto; }
@media (max-width: 700px) { .section { padding: 48px 0; } }
.feature .icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--primary-soft); color: var(--on-primary-soft); margin-bottom: 14px; }
.feature .icon svg { width: 24px; height: 24px; }
.feature h3 { margin-bottom: 6px; }
.feature p { color: var(--text-muted); margin: 0; }
.steps { counter-reset: step; display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.steps li { list-style: none; counter-increment: step; position: relative; padding: 20px 20px 20px 64px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.steps li::before { content: counter(step); position: absolute; left: 18px; top: 18px; width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; font: 700 .95rem var(--font-head); background: var(--primary); color: var(--on-primary); }
.steps { padding: 0; margin: 0; }
.type-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.type-chips span { background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 6px 14px; font-size: .9rem; }
.band { background: var(--band); color: var(--on-band); border-radius: var(--radius-lg); padding: 40px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.band h2 { color: var(--on-band); margin: 0 0 6px; }
.band p { color: var(--on-band-muted); margin: 0; }
.band .btn-primary { background: var(--accent-strong); color: #1A0A02; }
.band .btn-primary:hover { background: #FF8A63; }

/* ---------------------------------------------------------------- pricing */
.price-card { text-align: left; }
.price { font: 700 2.4rem/1 var(--font-head); color: var(--heading); margin: 8px 0; }
.price small { font: 500 .95rem var(--font-body); color: var(--text-muted); }
.checklist { list-style: none; padding: 0; margin: 16px 0 0; }
.checklist li { padding-left: 28px; position: relative; margin: 8px 0; }
.checklist li::before { content: ''; position: absolute; left: 4px; top: 7px; width: 12px; height: 7px; border-left: 2.5px solid var(--success); border-bottom: 2.5px solid var(--success); transform: rotate(-45deg); }
.estimator output { font: 700 1.8rem var(--font-head); color: var(--heading); }
table.breakdown { width: 100%; border-collapse: collapse; }
table.breakdown td { padding: 8px 0; border-bottom: 1px solid var(--border); }
table.breakdown td:last-child { text-align: right; font-variant-numeric: tabular-nums; }
table.breakdown tr.total td { font-weight: 700; font-size: 1.1rem; border-bottom: 0; color: var(--heading); }

/* ---------------------------------------------------------------- FAQ */
.faq details { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 0 18px; margin-bottom: 10px; }
.faq summary { cursor: pointer; padding: 16px 0; font-weight: 600; color: var(--heading); list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-size: 1.3rem; line-height: 1; color: var(--primary); }
.faq details[open] summary::after { content: '–'; }
.faq details p { color: var(--text-muted); }

/* ---------------------------------------------------------------- footer + AeroSapiens attribution */
.site-footer { margin-top: 64px; border-top: 1px solid var(--border); background: var(--surface); padding: 40px 0 28px; font-size: .92rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 28px; }
.footer-grid h2 { font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; color: var(--text-muted); margin-bottom: 10px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin: 6px 0; }
.footer-grid a { color: var(--text); text-decoration: none; }
.footer-grid a:hover { text-decoration: underline; }
.footer-bottom { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; color: var(--text-muted); font-size: .85rem; }
.parent-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text-muted); font-size: .85rem; }
.parent-brand a { color: var(--text); font-weight: 600; }
.parent-brand .as-logo { display: inline-flex; background: #FFFFFF; border-radius: 6px; padding: 2px 4px; border: 1px solid var(--border); line-height: 0; }
.parent-brand .as-logo img { height: 22px; width: auto; }
.parent-brand .as-tagline { font-style: italic; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-grid > :first-child { grid-column: 1 / -1; } }

/* ---------------------------------------------------------------- toasts and modal */
.toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 90; max-width: calc(100vw - 32px); }
.toast { background: var(--band); color: var(--on-band); padding: 12px 14px; border-radius: var(--radius); display: flex; gap: 12px; align-items: flex-start; box-shadow: var(--shadow-lg); max-width: 420px; }
.toast.error { background: var(--danger); color: #fff; }
.toast button { background: none; border: 0; color: inherit; font-size: 1.2rem; cursor: pointer; line-height: 1; }
dialog { border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); color: var(--text); padding: 0; max-width: min(720px, calc(100vw - 24px)); width: 100%; box-shadow: var(--shadow-lg); }
dialog::backdrop { background: rgba(5, 10, 25, .55); }
.dialog-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; border-bottom: 1px solid var(--border); }
.dialog-head h2 { font-size: 1.2rem; margin: 0; }
.dialog-body { padding: 20px; max-height: 70vh; overflow: auto; }
.dialog-foot { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; flex-wrap: wrap; }

/* ---------------------------------------------------------------- theme picker */
.theme-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.theme-option { position: relative; display: block; cursor: pointer; }
.theme-option input { position: absolute; opacity: 0; }
.theme-option .swatch { display: block; border-radius: var(--radius); border: 2px solid var(--border); overflow: hidden; background: var(--bg); }
.theme-option input:checked + .swatch { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.theme-option input:focus-visible + .swatch { outline: 3px solid var(--focus); outline-offset: 2px; }
.swatch .sw-head { height: 14px; background: var(--surface); border-bottom: 1px solid var(--border); }
.swatch .sw-body { padding: 10px; display: flex; flex-direction: column; gap: 6px; }
.swatch .sw-title { height: 8px; width: 70%; background: var(--heading); border-radius: 4px; }
.swatch .sw-text { height: 6px; width: 90%; background: var(--text-muted); border-radius: 4px; opacity: .7; }
.swatch .sw-btn { height: 14px; width: 50%; background: var(--primary); border-radius: 7px; }
.swatch .sw-name { display: block; padding: 6px 10px; font-size: .82rem; font-weight: 600; background: var(--surface); color: var(--text); border-top: 1px solid var(--border); }

/* ---------------------------------------------------------------- tables (dashboard/admin) */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
table.data { width: 100%; border-collapse: collapse; font-size: .92rem; }
table.data th, table.data td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
table.data th { font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--text-muted); background: var(--surface-2); }
table.data tr:last-child td { border-bottom: 0; }
table.data td.num { text-align: right; font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------------- legal pages */
.prose { max-width: 760px; }
.prose h2 { font-size: 1.3rem; margin-top: 1.8em; }
.prose li { margin: 6px 0; }

/* ---------------------------------------------------------------- auth pages */
.auth-wrap { min-height: calc(100vh - 64px - 200px); display: grid; place-items: center; padding: 40px var(--space); }
.auth-card { width: 100%; max-width: 440px; }

/* ---------------------------------------------------------------- social sign-in (provider brand colours, per their guidelines) */
.social-stack { display: flex; flex-direction: column; gap: 10px; margin: 18px 0 6px; }
.social-btn { width: 100%; border-radius: var(--radius-sm); gap: 12px; font-weight: 600; }
.social-btn svg { width: 20px; height: 20px; }
.social-google { background: #FFFFFF; color: #1F1F1F; border: 1px solid #747775; }
.social-google:hover { background: #F2F2F2; }
.social-facebook { background: #1877F2; color: #FFFFFF; border: 1px solid #1877F2; }
.social-facebook:hover { background: #1465D1; }
[data-theme="midnight"] .social-google { border-color: #FFFFFF; }
[data-theme="contrast"] .social-btn { border: 2px solid #000000; }
.social-note { margin: 6px 0 0; }
.divider { display: flex; align-items: center; gap: 12px; margin: 18px 0; color: var(--text-muted); font-size: .85rem; }
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.social-btn.social-setup { opacity: .6; cursor: not-allowed; filter: grayscale(.35); }
.setup-tag { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; padding: 2px 8px; border-radius: 999px; background: #FFF3DC; color: #6B4200; border: 1px solid #8A5300; }
.social-dev-note { margin: 10px 0 4px; }
.social-dev-note ul { margin: 6px 0 0; padding-left: 18px; }
.social-dev-note code { font-size: .8rem; word-break: break-all; }
.social-btn { white-space: normal; flex-wrap: wrap; text-align: center; row-gap: 6px; }
.auth-wrap > * { min-width: 0; }