/* ═══════════════════════════════════════════════════════════════════════
   Buildup – shared stylesheet
   ═══════════════════════════════════════════════════════════════════════ */

:root {
    --primary: #2b3a8e;
    --accent: #3d4eb5;
    --text-muted: #6b6f85;
    --border-color: rgba(43, 58, 142, 0.15);
    --bg: #ffffff;
    --font-sans: 'Roboto', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --pass: #16a34a;
    --fail: #dc2626;
    --warn: #d97706;
}

*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: var(--font-sans);
    margin: 0; padding: 0;
    color: var(--primary);
    background-color: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ── Layout containers ──────────────────────────────────────────────── */
.container, .arch-container {
    max-width: 1200px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.arch-container { background-color: #ffffff; }

/* ── Fixed side nav ────────────────────────────────────────────────── */
.site-nav {
    position: fixed;
    bottom: 3rem;
    left: 3rem;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.site-nav a {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--primary);
    text-decoration: none;
    opacity: 0.55;
    transition: opacity 0.2s;
}

.site-nav a:hover,
.site-nav a.active {
    opacity: 1;
}

@media (max-width: 768px) {
    .site-nav {
        position: fixed;
        bottom: auto;
        top: 0;
        left: 0;
        right: 0;
        flex-direction: row;
        gap: 1.5rem;
        padding: 1rem 1.5rem;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        z-index: 200;
    }
}

/* ── Site name header ──────────────────────────────────────────────── */
.site-name {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 2.5em;
    text-transform: uppercase;
    color: var(--primary);
    display: block;
    text-decoration: none;
    margin-bottom: 2rem;
}

/* ── Page header (tool pages) ───────────────────────────────────────── */
.page-header { padding: 2rem 1.5rem 1.5rem; border-bottom: 1px solid var(--border-color); }
.page-header h1 {
    font-size: clamp(1.5rem, 3.5vw, 2.2rem); font-weight: 300;
    letter-spacing: -0.01em; margin: 1rem 0 0.75rem 0; line-height: 1.15;
}
.page-header .subtitle {
    font-size: 1rem; color: var(--text-muted); margin: 0;
    max-width: 640px; font-weight: 300;
}

.back-link {
    text-decoration: none; color: var(--text-muted);
    font-size: 0.75rem; font-weight: 600; font-family: var(--font-mono);
    text-transform: uppercase; letter-spacing: 0.05em; transition: color 0.2s;
}
.back-link:hover { color: var(--accent); }

/* ── Breadcrumbs ────────────────────────────────────────────────────── */
.breadcrumb {
    display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap;
    justify-content: flex-start;
    font-family: var(--font-mono); font-size: 0.7rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.05em;
    padding: 0; border: none; background: none;
    position: static;
}
.breadcrumb a {
    text-decoration: none; color: var(--text-muted); transition: color 0.2s;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--border-color); user-select: none; }
.breadcrumb .current { color: var(--primary); }

/* ── Main content ───────────────────────────────────────────────────── */
main { padding: 1.5rem; flex: 1; }

/* ── Form elements ──────────────────────────────────────────────────── */
.arch-label {
    display: block; font-family: var(--font-mono); font-size: 0.65rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.08em;
    color: var(--text-muted); margin-bottom: 0.4rem;
}

.arch-input, .arch-select {
    width: 100%; border: 1px solid var(--border-color); background-color: var(--bg);
    padding: 0.6rem 0.8rem; font-family: var(--font-mono); font-size: 0.85rem;
    color: var(--primary); border-radius: 0; transition: all 0.2s; appearance: none;
}
.arch-input:focus, .arch-select:focus {
    outline: none; border-color: var(--primary); background-color: #ffffff;
    box-shadow: 0 0 0 3px rgba(43, 58, 142, 0.1);
}
.arch-input:focus-visible, .arch-select:focus-visible {
    outline: 2px solid var(--accent); outline-offset: -2px;
    box-shadow: none;
}
.arch-input[readonly] { background-color: var(--bg); color: var(--text-muted); }

.select-wrapper { position: relative; }
.select-wrapper::after {
    content: '▾'; position: absolute; right: 0.75rem; top: 50%;
    transform: translateY(-50%); font-size: 0.7rem;
    color: var(--text-muted); pointer-events: none;
}

/* ── Panels & titles ────────────────────────────────────────────────── */
.arch-panel {
    background-color: #ffffff; border: 1px solid var(--border-color);
    padding: 1.5rem; margin-bottom: 1.5rem;
}
.arch-title {
    font-family: var(--font-mono); font-size: 0.8rem; text-transform: uppercase;
    letter-spacing: 0.05em; font-weight: 700; color: var(--primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem; margin-bottom: 1.5rem; margin-top: 0;
}

/* ── Buttons ────────────────────────────────────────────────────────── */
.arch-btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 0.8rem 1.5rem; font-family: var(--font-mono); font-size: 0.75rem;
    font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
    border-radius: 0; transition: all 0.2s; cursor: pointer; border: none;
}
.arch-btn:focus-visible {
    outline: 2px solid var(--accent); outline-offset: 2px;
}
.arch-btn-primary {
    background-color: var(--primary); color: #ffffff;
    border: 1px solid var(--primary);
}
.arch-btn-primary:hover { background-color: var(--accent); border-color: var(--accent); }

/* ── Grid utilities ─────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1.25rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
@media (max-width: 768px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* ── Result hero cells ──────────────────────────────────────────────── */
.result-hero {
    border: 1px solid var(--border-color);
    display: grid; grid-template-columns: 1fr 1fr 1fr;
    margin-bottom: 1.5rem;
}
.result-hero-cell {
    padding: 1.5rem; border-right: 1px solid var(--border-color);
}
.result-hero-cell:last-child { border-right: none; }
.result-label {
    font-family: var(--font-mono); font-size: 0.6rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.08em;
    color: var(--text-muted); margin-bottom: 0.5rem;
}
.result-value {
    font-size: 2rem; font-weight: 300; letter-spacing: -0.02em; line-height: 1.1;
}
.result-sub {
    font-family: var(--font-mono); font-size: 0.65rem;
    color: var(--text-muted); margin-top: 0.25rem;
}

/* ── Results grid (h1-checker style) ────────────────────────────────── */
.results-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 0; border: 1px solid var(--border-color); margin-bottom: 1.5rem;
}
@media (max-width: 700px) { .results-grid { grid-template-columns: 1fr; } }
.result-cell {
    padding: 1.25rem 1.5rem;
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}
.result-cell:nth-child(3n) { border-right: none; }
.result-cell:nth-last-child(-n+3) { border-bottom: none; }
@media (max-width: 700px) {
    .result-cell { border-right: none; }
    .result-cell:last-child { border-bottom: none; }
}

/* ── Badges ─────────────────────────────────────────────────────────── */
.badge {
    display: inline-block; font-family: var(--font-mono); font-size: 0.6rem;
    font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em;
    padding: 0.2rem 0.6rem;
}
.badge-pass { background-color: #dcfce7; color: var(--pass); }
.badge-fail { background-color: #fee2e2; color: var(--fail); }
.badge-warn { background-color: #fef3c7; color: var(--warn); }
.badge-na   { background-color: #f3f4f6; color: var(--text-muted); }

/* ── Tables (span-table / summary-table) ────────────────────────────── */
.span-table, .summary-table {
    width: 100%; border-collapse: collapse;
    font-family: var(--font-mono); font-size: 0.78rem;
}
.span-table th, .summary-table th {
    padding: 0.5rem 0.75rem; text-align: left;
    font-size: 0.6rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.07em;
    color: var(--text-muted); border-bottom: 1px solid var(--border-color);
    background-color: var(--bg);
}
.span-table td, .summary-table td {
    padding: 0.6rem 0.75rem; border-bottom: 1px solid rgba(43, 58, 142, 0.08);
}
.span-table tr:last-child td, .summary-table tr:last-child td { border-bottom: none; }
.span-table tr.highlight td { background-color: rgba(43, 58, 142, 0.06); font-weight: 700; }
.span-table tr.highlight td:first-child { border-left: 3px solid var(--accent); }
.span-table .ok, .summary-table .pass  { color: var(--pass); font-weight: 700; }
.span-table .nok, .summary-table .fail { color: var(--fail); font-weight: 700; }

/* ── Info boxes ─────────────────────────────────────────────────────── */
.caveat-box {
    border-left: 3px solid var(--border-color);
    padding: 1rem 1.25rem; margin-top: 1.5rem;
    font-size: 0.82rem; color: var(--text-muted); line-height: 1.65;
}
.info-note {
    background-color: rgba(43, 58, 142, 0.06); border-left: 3px solid var(--accent);
    padding: 1rem 1.25rem; margin-bottom: 1.25rem;
    font-size: 0.85rem; color: #333; line-height: 1.65;
}
.eligibility-box {
    border-left: 3px solid var(--warn); background-color: #fffbeb;
    padding: 1rem 1.25rem; margin-bottom: 1rem;
    font-size: 0.82rem; color: #92400e; line-height: 1.65;
}
.eligibility-box strong { color: #78350f; }

/* ── Utility ────────────────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Loading skeleton ───────────────────────────────────────────────── */
.loading-pulse {
    background: linear-gradient(90deg, var(--bg) 25%, #e8e8ec 50%, var(--bg) 75%);
    background-size: 200% 100%;
    animation: pulse-sweep 1.5s ease-in-out infinite;
    border-radius: 2px;
    min-height: 1.2em;
}
@keyframes pulse-sweep {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}
.loading-text {
    font-family: var(--font-mono); font-size: 0.75rem;
    color: var(--text-muted); text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ── Result fade-in transition ──────────────────────────────────────── */
.result-fade {
    animation: resultFadeIn 0.15s ease-out;
}
@keyframes resultFadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Footer ─────────────────────────────────────────────────────────── */
footer {
    padding: 1.5rem 2rem; border-top: 1px solid var(--border-color);
    margin-top: auto; font-family: var(--font-mono); font-size: 0.7rem;
    color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em;
}
.footer-flex {
    display: flex; justify-content: space-between;
    align-items: center; flex-wrap: wrap; gap: 1rem;
}
.footer-contact {
    text-decoration: none; color: var(--text-muted); transition: color 0.2s;
}
.footer-contact:hover { color: var(--accent); }

/* ── Print (all tool pages) ─────────────────────────────────────────── */
@media print {
    * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
    body { background: #ffffff; }
    .site-nav, footer, .breadcrumb { display: none !important; }
    .arch-container, .container {
        border: none; max-width: 100%;
    }
    .page-header { padding: 1rem 0 0.75rem; border-bottom: 1px solid #ccc; }
    .page-header h1 { font-size: 1.5rem; margin: 0.5rem 0; }
    main { padding: 1rem 0; }
    .arch-panel { break-inside: avoid; border: 1px solid #ccc; }
    .result-hero, .results-grid { break-inside: avoid; }
    .arch-btn { display: none !important; }
    a[href]::after { content: none; }
}

/* ── Keyboard nav helper (applied by shared.js) ────────────────────── */
.dropdown-focus { color: var(--accent) !important; background: var(--bg) !important; }

/* ── Mobile responsive tool layouts ────────────────────────────────── */
.tool-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 1.5rem;
    align-items: start;
}
@media (max-width: 800px) {
    .tool-layout {
        grid-template-columns: 1fr;
    }
}

/* ── Calculating state ─────────────────────────────────────────────── */
.calculating-indicator {
    display: none;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent);
    padding: 0.4rem 0;
    animation: calcPulse 1s ease-in-out infinite;
}
.calculating-indicator.active { display: block; }
@keyframes calcPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ── Input validation ──────────────────────────────────────────────── */
.arch-input.input-error, .arch-select.input-error {
    border-color: var(--fail);
    background-color: #fef2f2;
}
.validation-msg {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--fail);
    margin-top: 0.25rem;
    display: none;
}
.validation-msg.visible { display: block; }

/* ── Reset button ──────────────────────────────────────────────────── */
.reset-link {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    text-decoration: none;
    cursor: pointer;
    border: none;
    background: none;
    padding: 0;
    transition: color 0.2s;
    margin-left: auto;
}
.reset-link:hover { color: var(--fail); }

/* ── Help tooltip ──────────────────────────────────────────────────── */
.help-tip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background-color: var(--bg);
    border: 1px solid var(--border-color);
    font-family: var(--font-mono);
    font-size: 0.55rem;
    font-weight: 700;
    color: var(--text-muted);
    text-decoration: none;
    cursor: help;
    margin-left: 0.35rem;
    vertical-align: middle;
    position: relative;
    transition: all 0.15s;
}
.help-tip:hover {
    background-color: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
}
.help-tip[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: #ffffff;
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    line-height: 1.4;
    padding: 0.5rem 0.75rem;
    white-space: nowrap;
    max-width: 280px;
    white-space: normal;
    z-index: 50;
}

/* ── Share URL button ──────────────────────────────────────────────── */
.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    background: none;
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.75rem;
    cursor: pointer;
    transition: all 0.15s;
}
.share-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
}
.share-btn.copied {
    color: var(--pass);
    border-color: var(--pass);
}

/* ── Tool header actions (reset + share) ───────────────────────────── */
.tool-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

/* ── API error banner ──────────────────────────────────────────────── */
.api-error {
    background-color: #fef2f2;
    border: 1px solid #fca5a5;
    border-left: 3px solid var(--fail);
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: #991b1b;
    display: none;
}
.api-error.visible { display: block; }

/* ── Homepage tool filter ──────────────────────────────────────────── */
.tools-filter {
    padding: 1.25rem 2rem;
    border-bottom: 1px solid var(--border-color);
    background-color: #ffffff;
}
.tools-filter input {
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-color);
    background-color: var(--bg);
    padding: 0.6rem 0.8rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--primary);
    border-radius: 0;
    transition: all 0.2s;
}
.tools-filter input:focus {
    outline: none;
    border-color: var(--primary);
    background-color: #ffffff;
}
.tools-filter input::placeholder {
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}