:root {
    --bg: #ffffff;
    --bg-subtle: #f5f7fa;
    --text: #111827;
    --text-muted: #6b7280;
    --blue: #1a5fad;
    --blue-hover: #144f91;
    --blue-soft: rgba(26, 95, 173, 0.08);
    --border: rgba(26, 95, 173, 0.22);
    --border-strong: rgba(26, 95, 173, 0.4);
    --danger: #dc2626;
    --success: #16a34a;
    --radius: 999px;
    --radius-box: 12px;
    --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg);
}

.container {
    width: min(720px, calc(100% - 2rem));
    margin-inline: auto;
}

/* Header */
.site-header {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand {
    display: inline-flex;
    text-decoration: none;
}

.brand-logo {
    height: 44px;
    width: auto;
    display: block;
}

.step-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.35rem 0.9rem;
    border-radius: var(--radius);
    border: 1px solid var(--blue);
    color: var(--blue);
    background: var(--blue-soft);
    white-space: nowrap;
}

.main-content {
    padding: 2rem 0 3rem;
}

.body-login .main-content {
    min-height: calc(100vh - 4rem);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 0;
}

.site-footer {
    padding: 1.25rem 0;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    background: var(--bg);
}

.site-footer p { margin: 0; }

/* Cards */
.card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-box);
    padding: 2rem;
    width: 100%;
}

.card-narrow {
    max-width: 420px;
    margin-inline: auto;
}

.card-login {
    text-align: center;
    padding: 2.5rem 2rem;
    box-shadow: 0 4px 24px rgba(26, 95, 173, 0.06);
}

.logo-hero {
    margin-bottom: 1.5rem;
}

.logo-main {
    width: min(180px, 70vw);
    height: auto;
    display: block;
    margin: 0 auto;
}

.card-title {
    margin: 0 0 0.35rem;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
}

.card-lead {
    margin: 0 0 1.5rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.card-header-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    margin: 0 0 0.75rem;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--blue);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Forms */
.form { display: flex; flex-direction: column; gap: 1rem; }

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.field { display: flex; flex-direction: column; gap: 0.35rem; text-align: left; }
.field-full { grid-column: 1 / -1; }

.field-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.field-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.required { color: var(--blue); }

.input {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-box);
    background: var(--bg);
    color: var(--text);
    font: inherit;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.input:focus {
    outline: none;
    border-color: var(--blue);
    box-shadow: 0 0 0 3px var(--blue-soft);
}

.input-code {
    font-size: 1.1rem;
    letter-spacing: 0.06em;
    text-align: center;
    text-transform: uppercase;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font: inherit;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background 0.15s, opacity 0.15s;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--blue);
    color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--blue-hover);
}

.btn-secondary {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border-strong);
}

.btn-secondary:hover:not(:disabled) {
    border-color: var(--blue);
    color: var(--blue);
}

.btn-lg { padding: 0.95rem 1.75rem; }
.btn-block { width: 100%; }
.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.8rem; }

.form-actions { margin-top: 0.25rem; }

/* Alerts */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-box);
    margin-bottom: 1rem;
    font-size: 0.9rem;
    text-align: left;
}

.alert-error {
    border: 1px solid var(--danger);
    background: #fef2f2;
    color: #b91c1c;
}

.alert-warning {
    border: 1px solid var(--blue);
    background: var(--blue-soft);
    color: var(--text);
    margin: 1.25rem 0;
}

.alert-success {
    border: 1px solid var(--success);
    background: #f0fdf4;
    color: #15803d;
}

.link-muted {
    color: var(--text-muted);
    font-size: 0.8rem;
    text-decoration: none;
    white-space: nowrap;
}

.link-muted:hover { color: var(--blue); }

.checkbox-field {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    cursor: pointer;
    font-size: 0.9rem;
    text-align: left;
    color: var(--text);
}

.checkbox-field input {
    margin-top: 0.2rem;
    accent-color: var(--blue);
}

/* Info blocks */
.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.info-box {
    text-align: center;
    padding: 0.85rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-box);
    background: var(--bg-subtle);
}

.info-value {
    display: block;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--blue);
}

.info-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.rules-list {
    margin: 0 0 1.25rem;
    padding-left: 1.1rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.rules-list li { margin-bottom: 0.4rem; }
.rules-list strong { color: var(--text); font-weight: 600; }

.level-table-wrap { margin-top: 0.5rem; }

.level-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.level-table th,
.level-table td {
    padding: 0.6rem 0.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.level-table th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
}

/* Test */
.test-shell { display: flex; flex-direction: column; gap: 1rem; }

.test-topbar {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-box);
    background: var(--bg-subtle);
}

.candidate-chip {
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.35rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    white-space: nowrap;
}

.progress-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}

.progress-bar {
    height: 4px;
    background: #e5e7eb;
    border-radius: var(--radius);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0;
    background: var(--blue);
    border-radius: var(--radius);
    transition: width 0.3s ease;
}

.timer-wrap {
    position: relative;
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
}

.timer-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.timer-ring-bg {
    fill: none;
    stroke: #e5e7eb;
    stroke-width: 3;
}

.timer-ring-fill {
    fill: none;
    stroke: var(--blue);
    stroke-width: 3;
    stroke-linecap: round;
    transition: stroke-dasharray 0.3s linear;
}

.timer-urgent .timer-ring-fill { stroke: var(--danger); }
.timer-urgent .timer-value { color: var(--danger); }

.timer-value {
    font-size: 0.8rem;
    font-weight: 700;
    position: relative;
    z-index: 1;
    color: var(--text);
}

.test-card { min-height: 300px; }

.topic-tag {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--blue);
    border: 1px solid var(--border);
    background: var(--blue-soft);
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius);
    margin-bottom: 0.85rem;
}

.question-text {
    margin: 0 0 1.25rem;
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text);
}

.options {
    display: grid;
    gap: 0.6rem;
    margin-bottom: 1.25rem;
}

.option-btn {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    width: 100%;
    padding: 0.85rem 1rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-box);
    background: var(--bg);
    color: var(--text);
    font: inherit;
    text-align: left;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
}

.option-btn:hover {
    border-color: var(--blue);
    background: var(--blue-soft);
}

.option-btn.selected {
    border-color: var(--blue);
    background: var(--blue-soft);
}

.option-key {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    border: 1px solid var(--border-strong);
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--blue);
}

.option-btn.selected .option-key {
    background: var(--blue);
    border-color: var(--blue);
    color: #ffffff;
}

.test-actions {
    display: flex;
    justify-content: flex-end;
}

.hidden { display: none !important; }

.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
    gap: 0.45rem;
    margin: 1rem 0 1.25rem;
}

.review-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
    padding: 0.5rem 0.3rem;
    border-radius: var(--radius-box);
    border: 1px solid var(--border);
    background: var(--bg-subtle);
    font: inherit;
    color: var(--text);
    cursor: pointer;
}

.review-item:hover { border-color: var(--blue); }
.review-filled { border-color: var(--blue); background: var(--blue-soft); }
.review-empty { opacity: 0.55; }

.review-num {
    font-size: 0.65rem;
    color: var(--text-muted);
}

.review-answer {
    font-weight: 700;
    font-size: 0.95rem;
}

.loading-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.spinner {
    width: 36px;
    height: 36px;
    margin: 0 auto 1rem;
    border: 2px solid var(--border);
    border-top-color: var(--blue);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Results */
.result-card { text-align: center; }

.result-eyebrow {
    margin: 0;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--blue);
}

.score-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

.score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: grid;
    place-content: center;
    border: 2px solid var(--blue);
    background: var(--blue-soft);
}

.score-number {
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1;
    color: var(--blue);
}

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

.score-details { text-align: left; }

.score-points {
    margin: 0 0 0.25rem;
    font-size: 1rem;
}

.score-level {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--blue);
}

.result-legend {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    margin-bottom: 0.75rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 0.3rem;
    vertical-align: middle;
}

.dot-ok { background: var(--blue); }
.dot-ko { background: var(--danger); }

.result-grid .review-item { cursor: default; }
.review-ok { border-color: var(--blue); background: var(--blue-soft); }
.review-ko { border-color: var(--danger); background: #fef2f2; opacity: 1; }

.result-footer-note {
    margin-top: 1rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.result-actions {
    display: flex;
    justify-content: center;
    margin-top: 1.5rem;
}

.result-actions .btn {
    text-decoration: none;
    min-width: 200px;
}

/* Admin */
.admin-table-wrap { overflow-x: auto; }

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.admin-table th,
.admin-table td {
    padding: 0.65rem 0.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.admin-table th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
}

.badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius);
    font-size: 0.7rem;
    font-weight: 600;
    border: 1px solid;
}

.badge-active {
    border-color: var(--success);
    background: #f0fdf4;
    color: #15803d;
}

.badge-inactive {
    border-color: var(--danger);
    background: #fef2f2;
    color: #b91c1c;
}

.inline-form {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: flex-end;
}

.inline-form .field { flex: 1; min-width: 140px; }

/* Admin dashboard */
.body-wide .container {
    width: min(960px, calc(100% - 2rem));
}

.admin-shell {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.admin-header {
    margin-bottom: 0.25rem;
}

.admin-header .card-lead {
    margin-bottom: 0;
}

.admin-block {
    margin-bottom: 0;
}

.admin-inline-form {
    display: inline;
    margin: 0;
}

.table-empty {
    color: var(--text-muted);
    text-align: center;
    padding: 1.5rem 0;
}

.admin-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.admin-toolbar .section-subtitle {
    margin-bottom: 0;
}

.admin-toolbar-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.btn-danger {
    background: var(--danger);
    color: #ffffff;
}

.btn-danger:hover:not(:disabled) {
    background: #b91c1c;
}

.admin-table .btn-danger {
    white-space: nowrap;
}

@media (max-width: 640px) {
    .form-grid { grid-template-columns: 1fr; }
    .info-grid { grid-template-columns: 1fr; }
    .test-topbar { grid-template-columns: 1fr; }
    .card { padding: 1.25rem; }
    .card-login { padding: 2rem 1.25rem; }
}