/* ============================================================
 * grammar-tool.css — public Ukrainian grammar checker
 * Standalone styling for ukr.vitalinguist.com.  Reads design
 * tokens from theme.css (var(--bg), --fg, --accent, etc.).
 * ============================================================ */

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-body);
    line-height: var(--line);
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Header ---------- */

.grammar-header {
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    padding: 14px 20px;
}
.grammar-header-inner {
    max-width: 880px;
    margin: 0 auto;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}
.grammar-brand {
    display: inline-flex;
    align-items: baseline;
    gap: 8px;
    color: var(--fg);
    font-family: var(--font-head);
    font-weight: 700;
    font-size: 22px;
}
.grammar-brand:hover { text-decoration: none; }
.grammar-brand-mark {
    background: var(--accent);
    color: var(--accent-fg);
    padding: 2px 8px;
    border-radius: var(--radius);
}
.grammar-brand-sub {
    color: var(--fg-muted);
    font-weight: 400;
    font-size: 16px;
}
.grammar-tagline {
    margin: 0;
    color: var(--fg-muted);
    font-size: 14px;
}

/* ---------- Main layout ---------- */

.grammar-main {
    max-width: 880px;
    margin: 0 auto;
    padding: 28px 20px 80px;
}
.grammar-intro h1 {
    font-family: var(--font-head);
    font-size: 32px;
    margin: 0 0 12px;
    line-height: 1.15;
}
.grammar-intro p {
    color: var(--fg-muted);
    max-width: var(--measure);
    margin: 0 0 28px;
}

/* ---------- Input ---------- */

.grammar-input textarea {
    width: 100%;
    min-height: 220px;
    padding: 16px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-soft);
    color: var(--fg);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.5;
    resize: vertical;
    outline: none;
    transition: border-color 120ms ease, box-shadow 120ms ease;
}
.grammar-input textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(194, 65, 12, 0.12);
}
.grammar-input textarea:disabled {
    opacity: 0.65;
    cursor: progress;
}
.grammar-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-top: 12px;
    flex-wrap: wrap;
}
.grammar-counter {
    color: var(--fg-muted);
    font-size: 13px;
    font-variant-numeric: tabular-nums;
}
.grammar-counter--warn {
    color: #b45309;
}
.grammar-buttons { display: flex; gap: 8px; }
.grammar-hint {
    color: var(--fg-muted);
    font-size: 12px;
    margin: 8px 0 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg-soft);
    color: var(--fg);
    font-family: var(--font-body);
    font-size: 15px;
    cursor: pointer;
    transition: background 120ms ease, border-color 120ms ease, transform 80ms ease;
}
.btn:hover:not(:disabled) { background: var(--bg); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary {
    background: var(--accent);
    color: var(--accent-fg);
    border-color: var(--accent);
    font-weight: 600;
}
.btn-primary:hover:not(:disabled) { background: var(--accent); filter: brightness(1.08); }
.btn-ghost { background: transparent; }

/* ---------- Results: stats ---------- */

.grammar-results { margin-top: 36px; }

.grammar-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
    gap: 10px;
    margin-bottom: 24px;
}
.stat {
    display: flex;
    flex-direction: column;
    padding: 12px 14px;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.stat-num {
    font-family: var(--font-head);
    font-size: 26px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    line-height: 1.1;
}
.stat-num--err  { color: #b91c1c; }
.stat-num--warn { color: #b45309; }
.stat-num--hint { color: #4d6cba; }
.stat-lbl {
    color: var(--fg-muted);
    font-size: 12px;
    margin-top: 2px;
}

/* ---------- Highlights pane ---------- */

.grammar-highlights {
    padding: 16px 18px;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: var(--font-body);
    line-height: 1.6;
    margin-bottom: 24px;
}
.hl {
    border-radius: 3px;
    padding: 0 2px;
    cursor: help;
    border-bottom: 2px solid transparent;
    background-color: transparent;
}
.hl--error {
    background-color: rgba(185, 28, 28, 0.14);
    border-bottom-color: #b91c1c;
}
.hl--warning {
    background-color: rgba(180, 83, 9, 0.13);
    border-bottom-color: #b45309;
}
.hl--hint {
    background-color: rgba(77, 108, 186, 0.12);
    border-bottom-color: #4d6cba;
}

.grammar-clean {
    padding: 18px 20px;
    background: rgba(22, 163, 74, 0.08);
    border: 1px solid rgba(22, 163, 74, 0.3);
    border-radius: var(--radius);
    color: #166534;
    font-weight: 600;
}

/* ---------- Issues list ---------- */

.grammar-issues {
    list-style: decimal;
    padding-left: 24px;
    margin: 0;
    counter-reset: issue;
}
.grammar-issue {
    margin: 0 0 14px;
    padding: 12px 14px;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-left-width: 4px;
    border-radius: var(--radius);
}
.grammar-issue--error   { border-left-color: #b91c1c; }
.grammar-issue--warning { border-left-color: #b45309; }
.grammar-issue--hint    { border-left-color: #4d6cba; }

.issue-head {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-wrap: wrap;
    font-family: var(--font-mono);
    font-size: 15px;
    margin-bottom: 6px;
}
.issue-quote {
    background: rgba(185, 28, 28, 0.1);
    padding: 1px 5px;
    border-radius: 3px;
    text-decoration: line-through;
    text-decoration-color: rgba(185, 28, 28, 0.55);
}
.grammar-issue--warning .issue-quote { background: rgba(180, 83, 9, 0.1); }
.grammar-issue--hint    .issue-quote { background: rgba(77, 108, 186, 0.1); text-decoration: none; }
.issue-arrow { color: var(--fg-muted); }
.issue-fix {
    background: rgba(22, 163, 74, 0.13);
    padding: 1px 5px;
    border-radius: 3px;
    font-weight: 600;
}
.issue-msg {
    color: var(--fg);
    font-size: 14px;
}
.issue-meta {
    margin-top: 6px;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.issue-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--fg-muted);
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 1px 6px;
    border-radius: 4px;
}
.issue-tag--source { background: var(--bg); }

.grammar-meta {
    color: var(--fg-muted);
    font-size: 12px;
    margin: 12px 0 0;
}

.grammar-error {
    margin-top: 24px;
    padding: 14px 16px;
    background: rgba(185, 28, 28, 0.08);
    border: 1px solid rgba(185, 28, 28, 0.3);
    border-radius: var(--radius);
    color: #7f1d1d;
}

/* ---------- API section ---------- */

.grammar-api {
    margin-top: 56px;
    padding-top: 32px;
    border-top: 1px dashed var(--border);
}
.grammar-api h2 {
    font-family: var(--font-head);
    font-size: 22px;
    margin: 0 0 8px;
}
.grammar-api p {
    color: var(--fg-muted);
    margin: 0 0 14px;
}
.grammar-api pre {
    background: #1a1a1a;
    color: #e6e2d8;
    padding: 14px 16px;
    border-radius: var(--radius);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.5;
    margin: 0 0 14px;
}
.grammar-api code { font-family: inherit; }
.grammar-api details {
    margin-bottom: 14px;
}
.grammar-api summary {
    cursor: pointer;
    color: var(--accent);
    margin-bottom: 8px;
    user-select: none;
}

/* ---------- Footer ---------- */

.grammar-footer {
    border-top: 1px solid var(--border);
    background: var(--bg);
    padding: 16px 20px;
    color: var(--fg-muted);
    font-size: 13px;
    display: flex;
    justify-content: space-between;
    max-width: 880px;
    margin: 40px auto 0;
}
.grammar-footer-engine {
    font-family: var(--font-mono);
    font-size: 11px;
}

/* ---------- Small screens ---------- */

@media (max-width: 600px) {
    .grammar-intro h1 { font-size: 26px; }
    .grammar-input textarea { min-height: 180px; font-size: 15px; }
    .grammar-controls { flex-direction: column; align-items: stretch; }
    .grammar-buttons { justify-content: flex-end; }
}