/* =========================================================
   ARAVEIL: MODEL PAGES (/models and /models/<provider>)
   Rendered by api/models.js. Loads last (after site.css,
   system.css and nav.css) and only styles what is unique to
   these pages; type, buttons, eyebrows and the footer come
   from the design system.

   1. Section furniture (mirrors the homepage)
   2. Breadcrumbs and brand marks
   3. Hero, stat sheet and spec card
   4. Plan bar and legend
   5. Provider tiles
   6. Model catalog and plan filter
   7. Strengths, plan columns and model cards
   8. Compare, reasons and provider links
   9. FAQ and closing
   10. Responsive
   ========================================================= */

/* ---------------------------------------------------------
   1. SECTION FURNITURE (mirrors the homepage)
   --------------------------------------------------------- */
.section { padding: 6.5rem 0; }
.section-alt { background: var(--bg-surface); }
.section-head {
    display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 1.5rem 4rem;
    align-items: end; margin-bottom: 3rem;
}
.section-head h2 { margin: 0; max-width: 16ch; font-size: clamp(2.1rem, 4vw, 3.25rem); line-height: 1; letter-spacing: -0.04em; text-wrap: balance; }
.section-lede { max-width: 32rem; margin: 0; font-size: 1.08rem; line-height: 1.65; color: var(--text-muted); }
.note { margin: 0.9rem 0 0; font: 500 var(--ds-label-size)/1.5 var(--ds-font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }

/* ---------------------------------------------------------
   2. BREADCRUMBS AND BRAND MARKS
   --------------------------------------------------------- */
.crumbs {
    display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem; margin-bottom: 3rem;
    font: 500 var(--ds-label-size)/1 var(--ds-font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted);
}
.crumbs a { color: var(--text-muted); transition: color 0.2s ease; }
.crumbs a:hover { color: var(--text-main); }
.crumbs [aria-current] { color: var(--text-main); }
.crumbs-sep { opacity: 0.5; }

/* The provider's logo on a square tinted with its brand colour. */
.brand-mark {
    --mark-size: 44px;
    width: var(--mark-size); height: var(--mark-size); flex-shrink: 0;
    display: inline-flex; align-items: center; justify-content: center;
    color: var(--brand, var(--text-main));
    background: color-mix(in srgb, var(--brand, var(--text-main)) 12%, var(--bg-surface));
    border-radius: var(--ds-radius);
}
.brand-mark svg { width: 52%; height: 52%; fill: currentColor; }
.brand-mark.is-small { --mark-size: 30px; }
.brand-mark.is-large { --mark-size: 64px; display: flex; margin-bottom: 1.75rem; }

/* ---------------------------------------------------------
   3. HERO, STAT SHEET AND SPEC CARD
   --------------------------------------------------------- */
.models-hero { padding: 3rem 0 5.5rem; }
.models-hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 3rem 5rem; align-items: end; }
.models-hero h1 { margin: 0; font-size: clamp(2.7rem, 6vw, 5rem); line-height: 0.95; letter-spacing: -0.045em; }
.models-lede { max-width: 34rem; margin: 1.6rem 0 0; font-size: 1.15rem; line-height: 1.6; color: var(--text-muted); }
.models-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2.25rem; }

/* Four headline numbers on a ruled sheet. */
.stat-sheet { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 0; border-top: 1px solid var(--text-main); }
.stat-sheet > div { padding: 1.1rem 0 1.4rem; border-bottom: 1px solid var(--ds-line); }
.stat-sheet > div:nth-child(even) { padding-left: 1.75rem; border-left: 1px solid var(--ds-line); }
.stat-sheet dt, .spec-card dt, .spec-card-title {
    font: 500 var(--ds-label-size)/1.2 var(--ds-font-mono); letter-spacing: var(--ds-label-track);
    text-transform: uppercase; color: var(--text-muted);
}
.stat-sheet dd {
    margin: 0.7rem 0 0; font: 500 clamp(2.4rem, 4.5vw, 3.5rem)/0.9 var(--ds-font-display);
    letter-spacing: -0.05em; font-variant-numeric: tabular-nums; color: var(--text-main);
}
.stat-sheet dd small, .spec-card dd small {
    margin-left: 0.4rem; font: 500 var(--ds-label-size)/1 var(--ds-font-mono);
    letter-spacing: var(--ds-label-track); text-transform: uppercase; color: var(--text-muted);
}

/* A provider's facts at a glance. */
.spec-card { padding: 1.5rem 1.75rem 1.75rem; background: var(--bg-surface); border-top: 2px solid var(--brand, var(--text-main)); border-radius: var(--ds-radius); }
.spec-card dl { margin: 0.9rem 0 1.6rem; }
.spec-card dl > div { display: flex; justify-content: space-between; align-items: baseline; gap: 1.5rem; padding: 0.75rem 0; border-bottom: 1px solid var(--ds-line); }
.spec-card dd { margin: 0; text-align: right; font: 500 1.6rem/1 var(--ds-font-display); letter-spacing: -0.03em; color: var(--text-main); }
.spec-card dd.is-text { font: 500 0.95rem/1.4 var(--ds-font-text); letter-spacing: 0; }
.spec-card dd b { font-weight: 600; }

/* ---------------------------------------------------------
   4. PLAN BAR AND LEGEND
   --------------------------------------------------------- */
.plan-bar { display: flex; gap: 3px; height: 8px; margin-top: 0.9rem; }
.plan-bar span { flex: var(--n) 1 0; background: var(--plan); border-radius: 1px; }
.plan-legend { display: flex; flex-wrap: wrap; gap: 0.4rem 1.25rem; margin: 0.8rem 0 0; padding: 0; list-style: none; }
.plan-legend li {
    display: flex; align-items: center; gap: 0.45rem;
    font: 500 var(--ds-label-size)/1.2 var(--ds-font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted);
}
.plan-legend li::before { content: ""; width: 7px; height: 7px; background: var(--plan); }
.plan-legend b { font-weight: 500; color: var(--text-main); }

/* ---------------------------------------------------------
   5. PROVIDER TILES
   --------------------------------------------------------- */
.provider-tiles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 0; padding: 0; list-style: none; }
.provider-tile {
    display: flex; flex-direction: column; height: 100%; padding: 1.5rem 1.6rem 1.6rem;
    background: var(--bg-surface); border-top: 2px solid var(--brand, var(--ds-line-strong)); border-radius: var(--ds-radius);
    color: var(--text-main); transition: background 0.25s ease;
}
.provider-tile:hover { background: color-mix(in srgb, var(--text-main) 3%, var(--bg-surface)); }
.provider-tile-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.75rem; }
.provider-tile-count, .provider-tile-by {
    font: 500 var(--ds-label-size)/1.2 var(--ds-font-mono); letter-spacing: var(--ds-label-track); text-transform: uppercase; color: var(--text-muted);
}
.provider-tile-name { font: 500 1.75rem/1 var(--ds-font-display); letter-spacing: -0.035em; }
.provider-tile-by { margin-top: 0.5rem; }
.provider-tile-copy { flex: 1; margin: 1rem 0 1.25rem; font-size: 0.94rem; line-height: 1.55; color: var(--text-muted); }
.provider-tile-link {
    display: inline-flex; align-items: center; gap: 0.6rem; margin-top: 1.4rem;
    font: 500 0.72rem/1 var(--ds-font-mono); letter-spacing: 0.13em; text-transform: uppercase;
}
.provider-tile-link::after {
    content: ""; width: 13px; height: 13px; background: currentColor;
    -webkit-mask: var(--ds-arrow) center / contain no-repeat; mask: var(--ds-arrow) center / contain no-repeat;
    transition: transform 0.25s var(--ds-ease);
}
.provider-tile:hover .provider-tile-link::after { transform: translateX(3px); }

/* ---------------------------------------------------------
   6. MODEL CATALOG AND PLAN FILTER
   --------------------------------------------------------- */
.plan-filter { display: inline-flex; flex-wrap: wrap; gap: 0; margin-bottom: 2rem; border: 1px solid var(--ds-line-strong); border-radius: var(--ds-radius); }
.plan-filter-btn {
    display: inline-flex; align-items: center; gap: 0.6rem; min-height: 44px; padding: 0 1.1rem;
    background: transparent; border: 0; cursor: pointer; color: var(--text-muted);
    font: 500 0.72rem/1 var(--ds-font-mono); letter-spacing: 0.12em; text-transform: uppercase;
    transition: background 0.2s ease, color 0.2s ease;
}
.plan-filter-btn + .plan-filter-btn { border-left: 1px solid var(--ds-line-strong); }
.plan-filter-btn::before { content: ""; width: 7px; height: 7px; background: var(--plan); }
.plan-filter-btn b { font-weight: 500; color: var(--text-main); }
.plan-filter-btn:hover { color: var(--text-main); }
.plan-filter-btn[aria-pressed="true"] { background: var(--text-main); color: var(--bg-body); }
.plan-filter-btn[aria-pressed="true"] b { color: var(--bg-body); }

.catalog { display: grid; gap: 2.75rem; }
.catalog-group-head { display: flex; align-items: center; gap: 0.85rem; padding-bottom: 0.9rem; border-bottom: 1px solid var(--text-main); }
.catalog-group-head h3 { flex: 1; margin: 0; font-size: 1.45rem; }
.catalog-group-head h3 a { color: inherit; transition: color 0.2s ease; }
.catalog-group-head h3 a:hover { color: var(--primary); }
.catalog-group-count { font: 500 var(--ds-label-size)/1 var(--ds-font-mono); letter-spacing: 0.1em; color: var(--text-muted); }

.model-list { margin: 0; padding: 0; list-style: none; }
.model-row {
    display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.75fr) minmax(0, 0.8fr) minmax(0, 1fr) minmax(0, 1.6fr) 4.5rem;
    gap: 1rem; align-items: center; padding: 0.75rem 0; border-bottom: 1px solid var(--ds-line);
}
.model-name { font: 500 1rem/1.3 var(--ds-font-display); letter-spacing: -0.01em; color: var(--text-main); }
.model-kind, .model-context { font-size: 0.9rem; color: var(--text-muted); }
.model-context { font-variant-numeric: tabular-nums; color: var(--text-main); }
.model-context small { color: var(--text-muted); font-size: 0.8rem; }
.model-price { font-size: 0.9rem; font-variant-numeric: tabular-nums; color: var(--text-main); }
.model-price small { color: var(--text-muted); font-size: 0.8rem; }
.model-plan {
    display: inline-flex; align-items: center; justify-content: flex-end; gap: 0.45rem; color: var(--text-main);
    font: 500 0.625rem/1 var(--ds-font-mono); letter-spacing: 0.12em; text-transform: uppercase;
}
.model-plan::before { content: ""; width: 7px; height: 7px; background: var(--plan); }

.model-traits { display: flex; flex-wrap: wrap; gap: 4px; }
.model-traits span {
    padding: 4px 6px; border: 1px solid var(--ds-line-strong); border-radius: var(--ds-radius);
    font: 500 0.6rem/1 var(--ds-font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted);
}

/* The filter shows what each plan includes; plans build on each other. */
.catalog[data-show="free"] .model-row:not([data-plan="free"]),
.catalog[data-show="lite"] .model-row[data-plan="pro"],
.catalog[data-show="free"] .catalog-group[data-free="0"],
.catalog[data-show="lite"] .catalog-group[data-lite="0"] { display: none; }

/* ---------------------------------------------------------
   7. STRENGTHS, PLAN COLUMNS AND MODEL CARDS
   --------------------------------------------------------- */
.strengths {
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 3rem;
    margin: 0; padding: 0; list-style: none; counter-reset: strength; border-top: 1px solid var(--text-main);
}
.strengths li {
    display: flex; gap: 1rem; align-items: baseline; padding: 1.35rem 0;
    border-bottom: 1px solid var(--ds-line); font: 500 1.3rem/1.2 var(--ds-font-display); letter-spacing: -0.02em;
}
.strengths li::before {
    counter-increment: strength; content: counter(strength, decimal-leading-zero);
    font: 500 var(--ds-label-size)/1 var(--ds-font-mono); letter-spacing: 0.1em; color: var(--primary);
}

.plan-columns { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; align-items: start; }
.plan-column {
    --col-muted: var(--text-muted);
    --card-bg: var(--bg-body);
    padding: 1.4rem 1.4rem 1.5rem; background: var(--bg-body); border-top: 2px solid var(--plan); border-radius: var(--ds-radius);
}
/* Pro, the recommended plan, is printed in reverse. */
.plan-column.is-featured {
    --col-muted: color-mix(in srgb, var(--bg-body) 62%, var(--text-main));
    --card-bg: color-mix(in srgb, var(--bg-body) 9%, var(--text-main));
    background: var(--text-main); color: var(--bg-body);
}
.plan-column header { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; margin-bottom: 1.25rem; }
.plan-column-name { margin: 0; font: 500 1.5rem/1 var(--ds-font-display); letter-spacing: -0.03em; color: inherit; }
.plan-column-name span {
    display: block; margin-top: 0.55rem; font: 500 var(--ds-label-size)/1.2 var(--ds-font-mono);
    letter-spacing: 0.1em; text-transform: uppercase; color: var(--col-muted);
}
.plan-column-price { margin: 0; text-align: right; font: 500 1.5rem/1 var(--ds-font-display); letter-spacing: -0.03em; color: inherit; }
.plan-column-price small {
    display: block; margin-top: 0.55rem; font: 500 var(--ds-label-size)/1 var(--ds-font-mono);
    letter-spacing: 0.1em; text-transform: uppercase; color: var(--col-muted);
}
.plan-column-empty { margin: 0; font-size: 0.94rem; line-height: 1.55; color: var(--col-muted); }

.model-cards { display: grid; gap: 6px; margin: 0; padding: 0; list-style: none; }
.model-card { display: grid; gap: 0.4rem; padding: 0.85rem 0.95rem; background: var(--card-bg); border-radius: var(--ds-radius); }
.model-card-name { font: 500 1.05rem/1.25 var(--ds-font-display); letter-spacing: -0.01em; }
.model-card-meta { font-size: 0.85rem; color: var(--col-muted); }
.model-card-price { font-size: 0.85rem; font-variant-numeric: tabular-nums; color: var(--col-muted); }
.model-card .model-traits { margin-top: 0.2rem; }
.plan-column.is-featured .model-traits span { border-color: color-mix(in srgb, var(--bg-body) 26%, transparent); color: var(--col-muted); }

/* ---------------------------------------------------------
   8. COMPARE, REASONS AND PROVIDER LINKS
   --------------------------------------------------------- */
.compare { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); border-top: 1px solid var(--text-main); }
.compare-side { display: flex; flex-direction: column; padding: 1.5rem 2.5rem 2rem 0; }
.compare-side.is-araveil {
    --inverse-muted: color-mix(in srgb, var(--bg-body) 62%, var(--text-main));
    padding: 1.5rem 2rem 2rem; background: var(--text-main); color: var(--bg-body);
}
.compare-label { margin: 0; font: 500 var(--ds-label-size)/1.3 var(--ds-font-mono); letter-spacing: var(--ds-label-track); text-transform: uppercase; color: var(--text-muted); }
.compare-side.is-araveil .compare-label, .compare-side.is-araveil .compare-copy { color: var(--inverse-muted); }
.compare-price { margin: 0.6rem 0 1rem; font: 500 clamp(3rem, 5.5vw, 4.5rem)/0.9 var(--ds-font-display); letter-spacing: -0.05em; color: inherit; }
.compare-price small { margin-left: 0.4rem; font: 500 var(--ds-label-size)/1 var(--ds-font-mono); letter-spacing: var(--ds-label-track); text-transform: uppercase; color: var(--text-muted); }
.compare-side.is-araveil .compare-price small { color: var(--inverse-muted); }
.compare-copy { max-width: 26rem; margin: 0 0 1.5rem; font-size: 0.98rem; line-height: 1.6; color: var(--text-muted); }
.compare-side .btn { align-self: flex-start; margin-top: auto; }
.compare-note { max-width: 60rem; margin: 1.4rem 0 0; font-size: 0.82rem; line-height: 1.65; color: var(--text-muted); }
.compare-note a { color: var(--text-main); text-decoration: underline; text-decoration-color: var(--primary); text-underline-offset: 3px; }

.reasons { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 0; padding: 0; list-style: none; counter-reset: reason; }
.reasons li { padding: 1.5rem 1.6rem 1.75rem; background: var(--bg-surface); border-radius: var(--ds-radius); }
.reasons li::before {
    counter-increment: reason; content: counter(reason, decimal-leading-zero); display: block; margin-bottom: 2.25rem;
    font: 500 var(--ds-label-size)/1 var(--ds-font-mono); letter-spacing: 0.1em; color: var(--primary);
}
.reasons h3 { margin: 0 0 0.6rem; font-size: 1.35rem; }
.reasons p { margin: 0; font-size: 0.96rem; line-height: 1.6; color: var(--text-muted); }

.other-providers { padding-top: 0; }
.provider-links { display: grid; grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr)); gap: 0; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--text-main); }
.provider-links a {
    display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: 0.75rem; align-items: center;
    height: 100%; padding: 1.1rem 1rem 1.1rem 0; border-bottom: 1px solid var(--ds-line); color: var(--text-main);
    transition: color 0.2s ease;
}
.provider-links .brand-mark { grid-row: span 2; }
.provider-links span:not(.brand-mark) { font: 500 1.1rem/1.1 var(--ds-font-display); letter-spacing: -0.02em; }
.provider-links small { font: 500 var(--ds-label-size)/1.3 var(--ds-font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }
.provider-links a:hover { color: var(--primary); }
.provider-links a.is-all { grid-template-columns: 1fr; }

/* ---------------------------------------------------------
   9. FAQ AND CLOSING
   --------------------------------------------------------- */
.faq-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.65fr); gap: 2.5rem 4.5rem; align-items: start; }
.faq-split h2 { margin: 0; font-size: clamp(2.1rem, 4vw, 3.25rem); line-height: 1; letter-spacing: -0.04em; }
.faq-list { border-top: 1px solid var(--text-main); }
.faq { border-bottom: 1px solid var(--ds-line); }
.faq summary {
    display: flex; align-items: center; justify-content: space-between; gap: 1.5rem;
    padding: 1.3rem 0; list-style: none; cursor: pointer;
    font: 500 1.15rem/1.25 var(--ds-font-display); letter-spacing: -0.02em; color: var(--text-main);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
    content: ""; flex-shrink: 0; width: 12px; height: 12px; color: var(--text-muted);
    background:
        linear-gradient(currentColor, currentColor) center / 100% 1px no-repeat,
        linear-gradient(currentColor, currentColor) center / 1px 100% no-repeat;
    transition: transform 0.25s var(--ds-ease);
}
.faq[open] summary::after { transform: rotate(45deg); }
.faq summary:hover { color: var(--primary); }
.faq p { max-width: 40rem; margin: 0 0 1.4rem; font-size: 1rem; line-height: 1.65; color: var(--text-muted); }

.models-closing { padding: 6rem 0 1rem; }
.closing-row { display: grid; grid-template-columns: minmax(0, 1.5fr) auto; gap: 2rem 4rem; align-items: end; padding-top: 2.5rem; border-top: 1px solid var(--text-main); }
.closing-row h2 { max-width: 16ch; margin: 0; font-size: clamp(2.4rem, 5vw, 4.25rem); line-height: 0.95; letter-spacing: -0.045em; text-wrap: balance; }
.closing-actions { display: flex; flex-direction: column; align-items: flex-start; }

/* ---------------------------------------------------------
   10. RESPONSIVE
   --------------------------------------------------------- */
@media (max-width: 1024px) {
    .models-hero-grid { grid-template-columns: minmax(0, 1fr); }
    .provider-tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .plan-columns { grid-template-columns: minmax(0, 1fr); }
    .strengths { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .model-row { grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.8fr) minmax(0, 0.8fr) minmax(0, 1fr) 4.5rem; }
    .model-row .model-traits { display: none; }
}
@media (max-width: 900px) {
    .section { padding: 5rem 0; }
    .section-head, .faq-split, .closing-row, .compare { grid-template-columns: minmax(0, 1fr); }
    .compare-side { padding-right: 0; }
    .reasons { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
    .models-hero { padding: 2rem 0 4rem; }
    .crumbs { margin-bottom: 2rem; }
    .provider-tiles, .strengths { grid-template-columns: minmax(0, 1fr); }
    .stat-sheet > div:nth-child(even) { padding-left: 1.1rem; }
    .stat-sheet dd small { display: block; margin: 0.5rem 0 0; }
    .models-actions .btn { flex: 1 1 100%; }
    .plan-filter { display: flex; width: 100%; }
    .plan-filter-btn { flex: 1; justify-content: center; padding: 0 0.6rem; letter-spacing: 0.08em; }
    .plan-filter-on { display: none; }
    /* Rows become two lines: name and plan, then what it is. */
    .model-row { grid-template-columns: minmax(0, 1fr) auto; row-gap: 0.3rem; }
    .model-kind { grid-column: 1; grid-row: 2; font-size: 0.85rem; }
    .model-context { grid-column: 2; grid-row: 2; text-align: right; font-size: 0.85rem; }
    .model-plan { grid-column: 2; grid-row: 1; }
    .model-price { grid-column: 1 / -1; grid-row: 3; font-size: 0.85rem; color: var(--text-muted); }
    .model-price:empty { display: none; }
    .compare-side.is-araveil { padding: 1.5rem 1.25rem 1.75rem; }
}
@media (max-width: 380px) {
    .plan-filter-btn b { display: none; }
}