/* ==========================================================================
   HireXTech - global stylesheet
   ========================================================================== */

:root {
    --primary: #0f5132;
    --primary-strong: #0a3622;
    --primary-soft: rgba(15, 81, 50, 0.14);
    --success: #16a34a;
    --warning: #d97706;
    --danger: #dc2626;
    --info: #0284c7;

    --bg: #0b0d13;
    --bg-alt: #10131c;
    --surface: #151926;
    --surface-2: #1b2130;
    --border: #262d3f;
    --border-strong: #333c52;
    --text: #eef1f8;
    --muted: #97a0b5;
    --heading: #ffffff;
    --shadow: 0 18px 40px -24px rgba(0, 0, 0, 0.85);
    --shadow-soft: 0 10px 24px -18px rgba(0, 0, 0, 0.7);

    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 22px;
    --container: 1180px;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'SFMono-Regular', ui-monospace, Menlo, Consolas, monospace;
}

[data-theme='light'] {
    --bg: #f8fafc;
    --bg-alt: #ffffff;
    --surface: #ffffff;
    --surface-2: #f1f5f9;
    --border: #e2e8f0;
    --border-strong: #cbd5e1;
    --text: #0f172a;
    --muted: #475569;
    --heading: #0f172a;
    --shadow: 0 18px 40px -26px rgba(15, 23, 42, 0.12);
    --shadow-soft: 0 10px 20px -16px rgba(15, 23, 42, 0.08);
    --primary-soft: rgba(15, 81, 50, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

img,
svg {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

h1, h2, h3, h4 {
    color: var(--heading);
    line-height: 1.2;
    margin: 0 0 0.6rem;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(1.9rem, 4vw, 2.9rem); }
h2 { font-size: clamp(1.35rem, 2.4vw, 1.85rem); }
h3 { font-size: 1.12rem; }

p { margin: 0 0 1rem; }

code {
    font-family: var(--font-mono);
    font-size: 0.92em;
}

.sr-only,
.skip-link:not(:focus) {
    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;
    top: 0.6rem;
    left: 0.6rem;
    z-index: 100;
    background: var(--primary);
    color: #fff;
    padding: 0.6rem 1rem;
    border-radius: var(--radius-sm);
}

.container {
    width: min(100% - 2.5rem, var(--container));
    margin-inline: auto;
}

.narrow {
    width: min(100% - 2.5rem, 820px);
}

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 1rem;
    min-height: 68px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 700;
    color: var(--heading);
    letter-spacing: -0.02em;
    flex-shrink: 0;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), #8b7bff);
    color: #fff;
}

.brand-text { font-size: 1.06rem; }

.primary-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-left: 0.75rem;
}

.nav-link {
    position: relative;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    color: var(--muted);
    font-size: 0.94rem;
    font-weight: 500;
    transition: color 0.15s ease, background 0.15s ease;
}

.nav-link:hover { color: var(--text); background: var(--surface-2); }

.nav-link.is-active { color: var(--heading); background: var(--primary-soft); }

.bookmark-count {
    display: inline-grid;
    place-items: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    margin-left: 4px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 700;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}

.search {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--muted);
    pointer-events: none;
    z-index: 1;
}

.search input[type='search'] {
    width: 230px;
    padding: 0.55rem 0.8rem 0.55rem 2.25rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--text);
    font: inherit;
    font-size: 0.9rem;
    transition: border-color 0.15s ease, width 0.2s ease;
}

.search input[type='search']:focus {
    outline: none;
    border-color: var(--primary);
    width: 280px;
}

.search-results {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    width: min(420px, 90vw);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    z-index: 50;
}

.search-results a {
    display: block;
    padding: 0.7rem 0.9rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

.search-results a:last-child { border-bottom: 0; }
.search-results a:hover { background: var(--surface-2); }
.search-results .search-empty { padding: 0.8rem 0.9rem; color: var(--muted); font-size: 0.88rem; }
.search-results .search-meta { display: block; color: var(--muted); font-size: 0.78rem; margin-top: 2px; }

.icon-button {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--muted);
    cursor: pointer;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.icon-button:hover { color: var(--text); border-color: var(--border-strong); }
[data-theme='dark'] .icon-sun { display: none; }
[data-theme='light'] .icon-moon { display: none; }

.nav-toggle {
    display: none;
    margin-left: auto;
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    padding: 0.4rem 0.5rem;
    cursor: pointer;
}

/* --------------------------------------------------------------- Buttons */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.62rem 1.15rem;
    border: 1px solid transparent;
    border-radius: 999px;
    font: inherit;
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
    white-space: nowrap;
}

.button:active { transform: translateY(1px); }

.button--primary {
    background: linear-gradient(135deg, var(--primary), #166534);
    color: #fff;
    box-shadow: 0 12px 24px -16px rgba(15, 81, 50, 0.85);
}

.button--primary:hover { background: linear-gradient(135deg, var(--primary-strong), #0f5132); }

.button--ghost {
    background: transparent;
    border-color: var(--border-strong);
    color: var(--text);
}

.button--ghost:hover { border-color: var(--primary); color: var(--heading); }

.button--soft {
    background: var(--primary-soft);
    color: var(--heading);
}

.button--danger {
    background: rgba(255, 92, 92, 0.12);
    border-color: rgba(255, 92, 92, 0.4);
    color: #ff8f8f;
}

.button--danger:hover { background: rgba(255, 92, 92, 0.2); }

.button--small { padding: 0.4rem 0.8rem; font-size: 0.84rem; }
.button--block { width: 100%; }
.button:disabled { opacity: 0.45; cursor: not-allowed; }

.text-link {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.text-link:hover { text-decoration: underline; }
.text-link--small { font-size: 0.82rem; }

/* ----------------------------------------------------------------- Hero */

.hero {
    position: relative;
    padding: 4.5rem 0 3.5rem;
    background:
        radial-gradient(900px 380px at 12% -10%, rgba(15, 81, 50, 0.16), transparent 70%),
        radial-gradient(700px 340px at 92% 0%, rgba(2, 132, 199, 0.10), transparent 70%);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
}

.hero-inner {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 3rem;
    align-items: center;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.74rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.hero-lead,
.lead {
    font-size: 1.06rem;
    color: var(--muted);
    max-width: 60ch;
}

.hero-search {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 0.5rem 0.5rem 1rem;
    margin: 1.6rem 0 1.4rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 999px;
    box-shadow: var(--shadow-soft);
    max-width: 560px;
}

.hero-search svg { color: var(--muted); flex-shrink: 0; }

.hero-search input[type='search'] {
    flex: 1;
    min-width: 0;
    padding: 0;
    background: none;
    border: 0;
    color: var(--text);
    font: inherit;
    font-size: 0.95rem;
}

.hero-search input[type='search']:focus { outline: none; }

.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1.8rem;
    margin-bottom: 1.8rem;
}

.stat { display: flex; flex-direction: column; }
.stat__value { font-size: 1.5rem; font-weight: 700; color: var(--heading); }
.stat__label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }

.hero-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; }

.hero-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    transform: rotate(-1.2deg);
}

.hero-card__head {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.8rem 1rem;
    border-bottom: 1px solid var(--border);
    background: var(--surface-2);
}

.hero-card__title { margin-left: 0.6rem; font-size: 0.82rem; color: var(--muted); font-family: var(--font-mono); }

.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot--red { background: #ff5f57; }
.dot--amber { background: #febc2e; }
.dot--green { background: #28c840; }

.hero-card__code {
    margin: 0;
    padding: 1.2rem 1.3rem;
    font-family: var(--font-mono);
    font-size: 0.84rem;
    line-height: 1.7;
    color: #cdd6f4;
    overflow-x: auto;
}

.tok-c { color: #6b7394; }

/* -------------------------------------------------------------- Sections */

.section { padding: 3.5rem 0; }
.section--tight { padding: 2rem 0 3.5rem; }
.section--alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.6rem;
    flex-wrap: wrap;
}

.section-head h2 { margin-bottom: 0.25rem; }
.section-head p { margin: 0; color: var(--muted); }

.page-head {
    padding: 3rem 0 1.5rem;
    background: radial-gradient(700px 260px at 15% -20%, rgba(15, 81, 50, 0.15), transparent 70%);
}

.page-head h1 { margin-bottom: 0.4rem; }

.page-head--accent {
    background: radial-gradient(700px 300px at 10% -30%, color-mix(in srgb, var(--accent, var(--primary)) 30%, transparent), transparent 72%);
}

.page-head__row { display: flex; align-items: center; gap: 1.1rem; }

.page-head__mark {
    display: grid;
    place-items: center;
    width: 62px;
    height: 62px;
    border-radius: 18px;
    background: color-mix(in srgb, var(--accent, var(--primary)) 22%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent, var(--primary)) 45%, transparent);
    color: var(--heading);
    font-weight: 700;
    font-family: var(--font-mono);
    font-size: 1.1rem;
    flex-shrink: 0;
}

/* ---------------------------------------------------------- Category grid */

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}

.category-grid--wide { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }

.category-card {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.9rem;
    padding: 1.1rem 1.2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    inset: 0 auto 0 0;
    width: 4px;
    background: var(--accent);
    opacity: 0.9;
}

.category-card:hover {
    transform: translateY(-3px);
    border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
    box-shadow: var(--shadow-soft);
}

.category-card__mark {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: color-mix(in srgb, var(--accent) 18%, transparent);
    color: var(--heading);
    font-weight: 700;
    font-family: var(--font-mono);
    font-size: 0.86rem;
    flex-shrink: 0;
}

.category-card__link { display: flex; align-items: center; gap: 0.9rem; flex: 1; min-width: 0; }

.category-card__body { display: flex; flex-direction: column; min-width: 0; }
.category-card__name { font-weight: 650; color: var(--heading); }
.category-card__desc { font-size: 0.85rem; color: var(--muted); }

.category-card__count {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--muted);
    background: var(--surface-2);
    border-radius: 999px;
    padding: 0.2rem 0.6rem;
    flex-shrink: 0;
}

.category-card--block { flex-direction: column; align-items: stretch; }
.category-card__actions { display: flex; gap: 1rem; margin-top: 0.85rem; padding-top: 0.75rem; border-top: 1px solid var(--border); }

/* ---------------------------------------------------- Structured Preparation Pathways */

.pathway-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 1.25rem;
}

@media (max-width: 960px) {
    .pathway-grid {
        grid-template-columns: 1fr;
    }
}

.pathway-card {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1.75rem 1.6rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
}

.pathway-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 4px;
}

.pathway-card--freshers::before { background: #16a34a; }
.pathway-card--experienced::before { background: #0f5132; }
.pathway-card--tips::before { background: #d97706; }

.pathway-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px -8px rgba(0, 0, 0, 0.4);
}
.pathway-card--freshers:hover { border-color: rgba(22, 163, 74, 0.45); }
.pathway-card--experienced:hover { border-color: rgba(15, 81, 50, 0.45); }
.pathway-card--tips:hover { border-color: rgba(217, 119, 6, 0.45); }

.pathway-card__header {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    margin-bottom: 1rem;
}

.pathway-card__badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    font-weight: 800;
    font-family: var(--font-mono, monospace);
    font-size: 0.95rem;
    flex-shrink: 0;
}

.pathway-card--freshers .pathway-card__badge {
    background: rgba(22, 163, 74, 0.12);
    color: #16a34a;
    border: 1px solid rgba(22, 163, 74, 0.25);
}

.pathway-card--experienced .pathway-card__badge {
    background: rgba(15, 81, 50, 0.12);
    color: #0f5132;
    border: 1px solid rgba(15, 81, 50, 0.25);
}

.pathway-card--tips .pathway-card__badge {
    background: rgba(217, 119, 6, 0.12);
    color: #d97706;
    border: 1px solid rgba(217, 119, 6, 0.25);
}

.pathway-card__heading {
    display: flex;
    flex-direction: column;
}

.pathway-card__level {
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.pathway-card--freshers .pathway-card__level { color: #16a34a; }
.pathway-card--experienced .pathway-card__level { color: #0f5132; }
.pathway-card--tips .pathway-card__level { color: #d97706; }

.pathway-card__title {
    margin: 0.2rem 0 0 0;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--heading);
    line-height: 1.35;
}

.pathway-card__desc {
    margin: 0 0 1.25rem 0;
    font-size: 0.9rem;
    color: var(--muted);
    line-height: 1.6;
}

.pathway-card__pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-bottom: 1.5rem;
}

.pathway-pill {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    background: var(--surface-2);
    color: var(--text);
    border: 1px solid var(--border);
}

.pathway-card__action {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.pathway-card__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.92rem;
    font-weight: 700;
    text-decoration: none;
    transition: gap 0.2s ease;
}
.pathway-card--freshers .pathway-card__cta { color: #16a34a; }
.pathway-card--experienced .pathway-card__cta { color: #0f5132; }
.pathway-card--tips .pathway-card__cta { color: #d97706; }

.pathway-card__cta:hover {
    gap: 0.75rem;
    text-decoration: underline;
}

/* ------------------------------------------------------------ Two column */

.two-column {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2.5rem;
}

.two-column--wide { gap: 2rem; }

/* ---------------------------------------------------------------- Lists */

.latest-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.6rem; }

.latest-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.8rem 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.latest-item a { font-weight: 550; }
.latest-item a:hover { color: var(--primary); }
.latest-item__meta { display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }
.latest-item__category { font-size: 0.8rem; color: var(--muted); }

.mini-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; }

.mini-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
    font-size: 0.9rem;
}

.mini-list__label { display: inline-flex; align-items: center; gap: 0.5rem; }
.mini-list__dot { width: 10px; height: 10px; border-radius: 3px; display: inline-block; flex-shrink: 0; }
.mini-list__value { font-family: var(--font-mono); color: var(--muted); }

/* ----------------------------------------------------------------- Tags */

.tag-list { display: flex; flex-wrap: wrap; gap: 0.4rem; }

.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.22rem 0.6rem;
    border-radius: 999px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.78rem;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.tag:hover { color: var(--heading); border-color: var(--primary); }
.tag--large { font-size: 0.85rem; padding: 0.35rem 0.8rem; }
.tag__count { opacity: 0.6; font-family: var(--font-mono); font-size: 0.72rem; }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* --------------------------------------------------------------- Badges */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    font-size: 0.74rem;
    font-weight: 650;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid transparent;
}

.badge--easy { background: rgba(46, 204, 113, 0.14); color: #58e08d; border-color: rgba(46, 204, 113, 0.35); }
.badge--medium { background: rgba(245, 166, 35, 0.14); color: #f7bb5c; border-color: rgba(245, 166, 35, 0.35); }
.badge--hard { background: rgba(255, 92, 92, 0.14); color: #ff8f8f; border-color: rgba(255, 92, 92, 0.35); }
.badge--muted { background: var(--surface-2); color: var(--muted); border-color: var(--border); }

.chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 550;
    border: 1px solid var(--border);
    background: var(--surface-2);
    color: var(--text);
}

.chip--category { border-color: color-mix(in srgb, var(--chip-accent, var(--primary)) 45%, var(--border)); }
.chip__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--chip-accent, var(--primary)); }
.chip--filter a { color: var(--muted); font-size: 1rem; line-height: 1; }
.chip--filter a:hover { color: var(--danger); }

.active-filters { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; margin-bottom: 1.2rem; }
.active-filters__label { font-size: 0.82rem; color: var(--muted); }

/* ---------------------------------------------------------- Question list */

.question-list { display: grid; gap: 1rem; }

.question-card {
    padding: 1.3rem 1.4rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.question-card:hover { border-color: var(--border-strong); box-shadow: var(--shadow-soft); }

.question-card__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; margin-bottom: 0.7rem; }

.question-card__title { font-size: 1.12rem; margin-bottom: 0.5rem; }
.question-card__title a:hover { color: var(--primary); }
.question-card__index { color: var(--muted); font-family: var(--font-mono); font-size: 0.9rem; margin-right: 0.4rem; }

.question-card__excerpt { color: var(--muted); font-size: 0.93rem; margin-bottom: 0.9rem; }

.question-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    padding-top: 0.8rem;
    border-top: 1px solid var(--border);
}

.question-card__actions { display: flex; align-items: center; gap: 0.7rem; }

.views { display: inline-flex; align-items: center; gap: 0.3rem; color: var(--muted); font-size: 0.84rem; }

.bookmark-button {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.5rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--muted);
    cursor: pointer;
    font: inherit;
    font-size: 0.84rem;
    transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.bookmark-button:hover { color: var(--heading); border-color: var(--primary); }
.bookmark-button.is-saved { color: var(--primary); border-color: var(--primary); background: var(--primary-soft); }
.bookmark-button.is-saved svg { fill: currentColor; }
.bookmark-button--wide { padding: 0.45rem 0.9rem; }

.read-more { font-size: 0.86rem; font-weight: 600; color: var(--primary); }
.read-more:hover { text-decoration: underline; }

/* ------------------------------------------------------------- Sidebar */

.layout-sidebar {
    display: grid;
    grid-template-columns: 290px minmax(0, 1fr);
    gap: 2rem;
    align-items: start;
}

.sidebar { position: sticky; top: 92px; display: grid; gap: 1rem; }

.filter-form {
    display: grid;
    gap: 0.9rem;
    padding: 1.3rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.filter-form__title { font-size: 1rem; margin: 0; }
.filter-form__actions { display: grid; gap: 0.5rem; margin-top: 0.3rem; }

.field { display: grid; gap: 0.35rem; }
.field__label { font-size: 0.82rem; font-weight: 600; color: var(--muted); }
.field__hint { font-size: 0.78rem; color: var(--muted); }
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }

input[type='text'],
input[type='search'],
input[type='password'],
input[type='color'],
select,
textarea {
    width: 100%;
    padding: 0.6rem 0.75rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font: inherit;
    font-size: 0.92rem;
    transition: border-color 0.15s ease;
}

input[type='color'] { padding: 0.2rem; height: 40px; cursor: pointer; }

textarea { resize: vertical; min-height: 90px; line-height: 1.6; }

input:focus,
select:focus,
textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }

.stack { display: grid; gap: 1rem; }

.sidebar-note,
.card-panel {
    padding: 1.2rem 1.3rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.sidebar-note h3 { margin-bottom: 0.4rem; }
.sidebar-note p { margin: 0; color: var(--muted); font-size: 0.9rem; }
.sidebar-note--wide { margin-top: 1.5rem; }
.sidebar-note ol { margin: 0.5rem 0 0; padding-left: 1.2rem; color: var(--muted); font-size: 0.9rem; }

.empty-state {
    padding: 3rem 1.5rem;
    text-align: center;
    background: var(--surface);
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius);
}

.empty-state h2 { font-size: 1.2rem; }
.empty-state p { color: var(--muted); }
.empty-state .button { margin-top: 0.5rem; }

.muted-text { color: var(--muted); font-size: 0.9rem; }

/* ------------------------------------------------------------ Pagination */

.pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem;
    margin-top: 1.8rem;
}

.page-link {
    display: inline-grid;
    place-items: center;
    min-width: 40px;
    height: 40px;
    padding: 0 0.75rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 0.88rem;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.page-link:hover { border-color: var(--primary); }
.page-link.is-current { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 650; }
.page-link.is-disabled { opacity: 0.4; pointer-events: none; }
.page-ellipsis { color: var(--muted); padding: 0 0.2rem; }
.page-info { font-size: 0.86rem; color: var(--muted); padding: 0 0.5rem; }

/* ------------------------------------------------- Question detail */

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 1.4rem;
    font-size: 0.84rem;
    color: var(--muted);
}

.breadcrumb a:hover { color: var(--primary); }

.question-detail {
    padding: 1.8rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
}

.question-detail__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem; margin-bottom: 1rem; }
.question-detail__title { font-size: clamp(1.4rem, 3vw, 2rem); }
.question-detail__toolbar { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 1.4rem; }

.answer-reveal {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-alt);
    overflow: hidden;
}

.answer-reveal > summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 1.2rem;
    cursor: pointer;
    list-style: none;
    background: var(--surface-2);
    border-bottom: 1px solid transparent;
    font-weight: 650;
}

.answer-reveal > summary::-webkit-details-marker { display: none; }
.answer-reveal[open] > summary { border-bottom-color: var(--border); }
.answer-reveal__hint { font-size: 0.8rem; font-weight: 500; color: var(--muted); }
.answer-reveal .answer { padding: 1.3rem 1.4rem; }

.track-study-guide {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.15rem 1.4rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}
.track-study-guide__title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--heading);
    margin-bottom: 0.5rem;
}
.track-study-guide p {
    margin: 0;
    font-size: 0.88rem;
    color: var(--muted);
    line-height: 1.5;
}

.editorial-trust-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.84rem;
    color: var(--muted);
    background: var(--surface-2);
    padding: 0.55rem 0.9rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    margin-bottom: 1.2rem;
}
.editorial-trust-item { display: inline-flex; align-items: center; gap: 0.35rem; }
.editorial-trust-sep { opacity: 0.4; }
.editorial-trust-link { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }

.interview-prep-guide {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.1rem 1.25rem;
    margin-bottom: 1.4rem;
}
.prep-guide-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.92rem;
    color: var(--heading);
    margin-bottom: 0.85rem;
}
.prep-guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
}
.prep-guide-item {
    display: flex;
    gap: 0.75rem;
    font-size: 0.88rem;
}
.prep-guide-num {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--primary);
    background: color-mix(in srgb, var(--primary) 12%, transparent);
    padding: 0.2rem 0.45rem;
    border-radius: 4px;
    height: fit-content;
}
.prep-guide-item strong { display: block; color: var(--heading); margin-bottom: 0.2rem; font-size: 0.88rem; }
.prep-guide-item p { margin: 0; color: var(--muted); line-height: 1.45; }

.answer-section {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-alt);
    overflow: hidden;
    margin-bottom: 1.4rem;
}
.answer-section__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1.25rem;
    background: var(--surface-2);
    border-bottom: 1px solid var(--border);
}
.answer-section__title { font-weight: 700; color: var(--heading); font-size: 0.95rem; }
.answer-section__badge {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--success, #10b981) 15%, transparent);
    color: var(--success, #10b981);
    border: 1px solid color-mix(in srgb, var(--success, #10b981) 30%, transparent);
}
.answer-section .answer { padding: 1.4rem; }

.candidate-tips-box {
    background: var(--surface);
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    padding: 1.1rem 1.3rem;
    margin-top: 1.3rem;
}
.candidate-tips-box h3 { margin: 0 0 0.6rem 0; font-size: 0.95rem; color: var(--heading); }
.candidate-tips-box ol { margin: 0; padding-left: 1.2rem; display: flex; flex-direction: column; gap: 0.4rem; font-size: 0.88rem; color: var(--muted); line-height: 1.45; }
.candidate-tips-box ol li strong { color: var(--text); }

.question-feedback-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.84rem;
    color: var(--muted);
    padding-top: 1rem;
    margin-top: 1.2rem;
    border-top: 1px solid var(--border);
}
.feedback-link { color: var(--primary); text-decoration: none; font-weight: 500; }
.feedback-link:hover { text-decoration: underline; }

.section-subtext { color: var(--muted); font-size: 0.9rem; margin-top: -0.2rem; margin-bottom: 1rem; }

.related { margin-top: 2.5rem; }
.related-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }
.related-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}
.related-list a:hover { color: var(--primary); }

/* ---------------------------------------------------------------- Prose */

.prose { color: var(--text); }
.prose > *:first-child { margin-top: 0; }
.prose > *:last-child { margin-bottom: 0; }
.prose p { margin: 0 0 1rem; }
.prose ul,
.prose ol { margin: 0 0 1rem; padding-left: 1.4rem; }
.prose li { margin-bottom: 0.35rem; }
.prose strong { color: var(--heading); }
.prose a { color: var(--primary); text-decoration: underline; }

.inline-code {
    padding: 0.12rem 0.4rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.86em;
    color: #c4b5fd;
}

.code-block {
    margin: 0 0 1.1rem;
    padding: 1.1rem 1.2rem;
    background: #0d1017;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow-x: auto;
}

[data-theme='light'] .code-block { background: #1b2030; }

.code-block code {
    font-family: var(--font-mono);
    font-size: 0.84rem;
    line-height: 1.72;
    color: #cdd6f4;
    white-space: pre;
}

/* ------------------------------------------------------------- Practice */

.practice-setup {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
    gap: 1rem;
    align-items: end;
    padding: 1.3rem;
    margin-bottom: 2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.practice { display: grid; gap: 1.2rem; }
.practice__status { display: grid; gap: 0.6rem; }

.progress { height: 6px; background: var(--surface-2); border-radius: 999px; overflow: hidden; }
.progress__bar { height: 100%; background: linear-gradient(90deg, var(--primary), #a82346); transition: width 0.3s ease; }

.practice__counters { display: flex; align-items: center; justify-content: space-between; font-size: 0.88rem; color: var(--muted); }
.practice__score { display: flex; gap: 1rem; }
.score--good strong { color: #58e08d; }
.score--bad strong { color: #ff8f8f; }

.flashcard {
    padding: 1.8rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
}

.flashcard__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem; margin-bottom: 1.2rem; }
.flashcard__question { font-size: clamp(1.25rem, 2.6vw, 1.7rem); margin-bottom: 1.4rem; }
.flashcard__answer { margin: 1.3rem 0; padding: 1.2rem 1.3rem; background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius); }
.flashcard__actions { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: space-between; margin-top: 1.3rem; }

.practice__done {
    padding: 2.5rem 1.5rem;
    text-align: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.practice__done .hero-cta { justify-content: center; }

/* ----------------------------------------------------------- Accordion */

.accordion { display: grid; gap: 0.6rem; }

.accordion__item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.accordion__item[open] { border-color: var(--border-strong); }

.accordion__summary {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    padding: 1rem 1.2rem;
    cursor: pointer;
    list-style: none;
}

.accordion__summary::-webkit-details-marker { display: none; }

.accordion__index {
    display: grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: var(--surface-2);
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    flex-shrink: 0;
}

.accordion__question { flex: 1; font-weight: 600; color: var(--heading); }
.accordion__chevron { color: var(--muted); transition: transform 0.2s ease; flex-shrink: 0; }
.accordion__item[open] .accordion__chevron { transform: rotate(180deg); }
.accordion__body { padding: 0 1.2rem 1.2rem 3.1rem; }
.accordion__actions { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: 1rem; padding-top: 0.9rem; border-top: 1px solid var(--border); }
.accordion--compact .accordion__body { padding-left: 1.2rem; }

/* ---------------------------------------------------- Category Load More */

.load-more-section {
    margin-top: 2rem;
    padding: 1.6rem 1.4rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.1rem;
    box-shadow: var(--shadow-sm);
}

.load-more-counter {
    font-size: 0.9rem;
    color: var(--muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.55rem;
    width: 100%;
    max-width: 340px;
}

.load-more-counter strong {
    color: var(--heading);
}

.load-more-progress-bar-track {
    width: 100%;
    height: 6px;
    background: var(--surface-2);
    border-radius: 999px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.load-more-progress-bar-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 999px;
    transition: width 0.3s ease;
}

.load-more-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-width: 260px;
    padding: 0.75rem 1.6rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s, background-color 0.15s, border-color 0.15s;
}

.load-more-btn:hover {
    transform: translateY(-1px);
}

.load-more-done {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--success, #10b981);
    font-size: 0.92rem;
    font-weight: 600;
    margin: 0;
}

@keyframes fadeInItem {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.accordion__item.is-fade-in {
    animation: fadeInItem 0.25s ease-out forwards;
}

.difficulty-tabs { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.4rem; }

.difficulty-tab {
    padding: 0.45rem 0.95rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--muted);
    font-size: 0.86rem;
    font-weight: 550;
}

.difficulty-tab:hover { color: var(--text); border-color: var(--border-strong); }
.difficulty-tab.is-active { background: var(--primary-soft); border-color: var(--primary); color: var(--heading); }

/* ------------------------------------------------------------------ CTA */

.cta-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    padding: 2.2rem 2.4rem;
    background: linear-gradient(135deg, rgba(15, 81, 50, 0.12), rgba(2, 132, 199, 0.08));
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
}

.cta-banner h2 { margin-bottom: 0.4rem; }
.cta-banner p { margin: 0; color: var(--muted); }

/* ----------------------------------------------------------------- Admin */

.admin-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; }
.admin-head__actions { display: flex; align-items: center; gap: 0.7rem; flex-wrap: wrap; }

.admin-nav-wrap { border-bottom: 1px solid var(--border); background: var(--bg-alt); }

.admin-nav { display: flex; flex-wrap: wrap; gap: 0.3rem; padding: 0.5rem 0; }

.admin-nav__link {
    padding: 0.5rem 0.9rem;
    border-radius: var(--radius-sm);
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 550;
}

.admin-nav__link:hover { color: var(--text); background: var(--surface-2); }
.admin-nav__link.is-active { color: var(--heading); background: var(--primary-soft); }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1rem; margin-bottom: 2.5rem; }

.stat-card {
    padding: 1.2rem 1.3rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.stat-card__value { display: block; font-size: 1.9rem; font-weight: 700; color: var(--heading); line-height: 1.1; }
.stat-card__label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }

.inline-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    align-items: center;
    margin-bottom: 1.4rem;
}

.inline-filters input[type='search'] { max-width: 280px; }
.inline-filters select { width: auto; min-width: 150px; }

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }

.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }

.data-table th,
.data-table td { padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid var(--border); }

.data-table th {
    background: var(--surface-2);
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    font-weight: 650;
}

.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table tbody tr:hover { background: var(--surface-2); }
.data-table__title a { font-weight: 550; }
.data-table__title a:hover { color: var(--primary); }
.text-right { text-align: right; }
.table-actions { display: inline-flex; gap: 0.4rem; }
.table-actions form { display: inline; }

.auth-card { display: grid; place-items: center; min-height: 62vh; }
.auth-card__panel { width: min(100%, 420px); padding: 2rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.auth-card__hint { margin: 1.2rem 0 0; font-size: 0.84rem; color: var(--muted); }

.form-actions { display: flex; gap: 0.7rem; flex-wrap: wrap; }

/* ------------------------------------------------------ Admin import */

.file-input {
    width: 100%;
    padding: 0.7rem 0.75rem;
    background: var(--surface);
    border: 1px dashed var(--border);
    border-radius: var(--radius-sm);
    color: var(--muted);
    font: inherit;
    font-size: 0.88rem;
}

.file-input::file-selector-button {
    margin-right: 0.75rem;
    padding: 0.4rem 0.85rem;
    border: 0;
    border-radius: var(--radius-sm);
    background: var(--primary);
    color: #fff;
    font: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
}

.field--plain { border: 0; margin: 0; padding: 0; }

.checkbox-field {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    font-size: 0.9rem;
    color: var(--text);
    cursor: pointer;
}

.checkbox-field input { margin-top: 0.15rem; accent-color: var(--primary); }

.sidebar-note .format-list {
    margin: 0.6rem 0 0;
    padding-left: 1.1rem;
    color: var(--muted);
    font-size: 0.88rem;
    display: grid;
    gap: 0.35rem;
}

.sidebar-note .sidebar-note__action { margin-top: 0.7rem; }

.import-actions { margin-top: 1.6rem; }
.import-actions form { display: inline; }
.import-note { margin-top: 0.6rem; font-size: 0.85rem; }

/* ---------------------------------------------------------------- Flash */

.flash-stack { margin-top: 1rem; }

.flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.flash--success { background: rgba(46, 204, 113, 0.12); border-color: rgba(46, 204, 113, 0.4); color: #58e08d; }
.flash--error { background: rgba(255, 92, 92, 0.12); border-color: rgba(255, 92, 92, 0.4); color: #ff8f8f; }

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

.site-footer {
    margin-top: 5rem;
    padding: 3.5rem 0 2rem 0;
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1.1fr 1.1fr 1.1fr;
    gap: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.footer-col {
    display: flex;
    flex-direction: column;
}

.footer-brand {
    font-weight: 800;
    color: var(--heading);
    margin: 0 0 0.6rem 0;
    font-size: 1.35rem;
    letter-spacing: -0.02em;
}

.footer-note {
    margin: 0 0 1rem 0;
    color: var(--muted);
    font-size: 0.88rem;
    max-width: 320px;
    line-height: 1.6;
}

.footer-contact-info {
    margin-top: 0.25rem;
}

.footer-email-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.86rem;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.footer-email-link:hover {
    text-decoration: underline;
}

.footer-col__title {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--heading);
    margin: 0 0 1.1rem 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.footer-link {
    display: block;
    color: var(--muted);
    font-size: 0.88rem;
    line-height: 1.4;
    text-decoration: none;
    transition: color 0.15s ease, transform 0.15s ease;
}

.footer-link:hover {
    color: var(--primary);
    transform: translateX(3px);
    text-decoration: underline;
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1.25rem;
}

.footer-copy {
    margin: 0;
    color: var(--muted);
    font-size: 0.84rem;
}

.footer-bottom-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.85rem;
}

.footer-bottom-links a {
    color: var(--muted);
    font-size: 0.82rem;
    text-decoration: none;
    transition: color 0.15s ease;
}

.footer-bottom-links a:hover {
    color: var(--primary);
    text-decoration: underline;
}

.footer-sep {
    color: var(--border-strong);
    font-size: 0.75rem;
}

@media (max-width: 960px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 600px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ---------------------------------------------------- Contact form */

.contact-form { display: flex; flex-direction: column; gap: 1.25rem; margin-top: 1.5rem; }
.form-group { display: flex; flex-direction: column; gap: 0.35rem; }
.form-label { font-size: 0.9rem; font-weight: 600; color: var(--heading); }
.form-input {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    padding: 0.6rem 0.85rem;
    transition: border-color 0.15s, box-shadow 0.15s;
    width: 100%;
}
.form-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent); outline: none; }
textarea.form-input { resize: vertical; min-height: 8rem; }
select.form-input { cursor: pointer; }

/* --------------------------------------------------------- Error page */

.error-page { text-align: center; padding: 4rem 0; }
.error-code { font-family: var(--font-mono); font-size: 4rem; font-weight: 700; color: var(--primary); margin: 0; line-height: 1; }
.error-actions { display: flex; justify-content: center; gap: 0.7rem; margin-top: 1.5rem; flex-wrap: wrap; }

/* ---------------------------------------------------------- Responsive */

@media (max-width: 1080px) {
    .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
    .hero-panel { display: none; }
    .layout-sidebar { grid-template-columns: 1fr; }
    .sidebar { position: static; }
    .practice-setup { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
    .nav-toggle { display: inline-flex; order: 3; }
    .primary-nav {
        display: none;
        order: 4;
        flex-basis: 100%;
        flex-direction: column;
        align-items: stretch;
        margin: 0 0 0.8rem;
        padding: 0.5rem;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
    }
    .primary-nav.is-open { display: flex; }
    .header-inner { flex-wrap: wrap; }
    .header-actions { order: 2; margin-left: auto; }
    .search input[type='search'] { width: 150px; }
    .search input[type='search']:focus { width: 180px; }
    .two-column { grid-template-columns: 1fr; gap: 2rem; }
    .cta-banner { flex-direction: column; align-items: flex-start; }
    .field-row { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .container { width: calc(100% - 2rem); }
    .hero { padding: 3rem 0 2.5rem; }
    .question-detail { padding: 1.3rem; }
    .practice-setup { grid-template-columns: 1fr; }
    .flashcard__actions { flex-direction: column; }
    .flashcard__actions .button { width: 100%; }
    .accordion__body { padding-left: 1.2rem; }
    .search { display: none; }
    .data-table { font-size: 0.84rem; }
    .data-table th:nth-child(1),
    .data-table td:nth-child(1),
    .data-table th:nth-child(5),
    .data-table td:nth-child(5) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
    html { scroll-behavior: auto; }
}

@media print {
    .site-header, .site-footer, .question-detail__toolbar, .related, .sidebar, .hero-panel { display: none !important; }
    body { background: #fff; color: #000; }
    .answer-reveal { border-color: #ccc; }
}

/* Cookie & Privacy Consent Banner */
.cookie-banner { position: fixed; bottom: 0; left: 0; right: 0; z-index: 9999; background: var(--surface, #ffffff); border-top: 1px solid var(--border, #e2e8f0); box-shadow: 0 -4px 24px rgba(0,0,0,0.12); padding: 1.15rem 1.5rem; font-size: 0.88rem; animation: slideUpBanner 0.25s ease-out; }
@keyframes slideUpBanner { from { transform: translateY(100%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.cookie-banner__inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 1.75rem; }
.cookie-banner__content { display: flex; align-items: center; gap: 1rem; flex: 1; }
.cookie-banner__icon { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 12px; background: rgba(15, 81, 50, 0.12); color: #0f5132; flex-shrink: 0; }
.cookie-banner__text { margin: 0; color: var(--text, #0f172a); line-height: 1.55; font-size: 0.88rem; }
.cookie-banner__text a { color: var(--primary, #0f5132); font-weight: 600; text-decoration: underline; }
.cookie-banner__actions { flex-shrink: 0; display: flex; align-items: center; gap: 0.65rem; }
.cookie-banner__btn { border: none; border-radius: 8px; padding: 0.6rem 1.15rem; font-size: 0.85rem; font-weight: 600; cursor: pointer; transition: all 0.15s ease; white-space: nowrap; font-family: inherit; }
.cookie-banner__btn--primary { background: var(--primary, #0f5132); color: #ffffff; }
.cookie-banner__btn--primary:hover { background: var(--primary-strong, #0a3622); }
.cookie-banner__btn--secondary { background: var(--surface-2, #f1f5f9); color: var(--text, #0f172a); border: 1px solid var(--border-strong, #cbd5e1); }
.cookie-banner__btn--secondary:hover { background: var(--border, #e2e8f0); color: var(--heading, #0f172a); }
@media (max-width: 860px) {
    .cookie-banner__inner { flex-direction: column; align-items: stretch; gap: 1.1rem; }
    .cookie-banner__content { align-items: flex-start; }
    .cookie-banner__actions { justify-content: flex-end; width: 100%; }
}
@media (max-width: 480px) {
    .cookie-banner__actions { flex-direction: column; }
    .cookie-banner__btn { width: 100%; text-align: center; }
}