:root {
    --color-bg: #f4f6f8;
    --color-card: #ffffff;
    --color-text: #1d2733;
    --color-muted: #667085;
    --color-primary: #f4b000;
    --color-primary-dark: #c78d00;
    --color-border: #d9dee7;
    --color-error: #b42318;
    --color-success: #027a48;
    --shadow-card: 0 12px 30px rgba(16, 24, 40, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
}

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

.topbar {
    min-height: 64px;
    background: #111827;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    gap: 24px;
}

.topbar__brand a {
    font-weight: 800;
    letter-spacing: 0.02em;
}

.topbar__nav {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.topbar__nav a {
    color: #e5e7eb;
    font-size: 14px;
}

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

.logout-form {
    margin: 0;
}

.logout-form button {
    border: 1px solid rgba(255,255,255,0.25);
    background: transparent;
    color: #fff;
    border-radius: 8px;
    padding: 7px 12px;
    cursor: pointer;
}

.container {
    width: min(1180px, calc(100% - 32px));
    margin: 28px auto;
}

.page-header {
    margin-bottom: 22px;
}

.page-header h1 {
    margin: 0 0 6px;
}

.page-header p {
    margin: 0;
    color: var(--color-muted);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.stat-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    border-radius: 18px;
    padding: 22px;
}

.stat-card span {
    display: block;
    color: var(--color-muted);
    font-size: 14px;
    margin-bottom: 10px;
}

.stat-card strong {
    font-size: 34px;
}

.stat-card--warning strong {
    color: var(--color-primary-dark);
}

.auth-page {
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(244,176,0,0.25), transparent 30%),
        linear-gradient(135deg, #111827, #263241);
}

.auth-wrapper {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-card {
    width: min(420px, 100%);
    background: #fff;
    border-radius: 22px;
    padding: 32px;
    box-shadow: 0 24px 60px rgba(0,0,0,0.24);
}

.auth-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.auth-logo__mark {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: var(--color-primary);
    color: #111827;
    display: grid;
    place-items: center;
    font-weight: 900;
}

.auth-logo span {
    display: block;
    color: var(--color-muted);
    font-size: 13px;
}

.auth-card h1 {
    margin: 0 0 8px;
}

.muted {
    color: var(--color-muted);
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-weight: 650;
    margin-bottom: 7px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 11px 12px;
    font: inherit;
}

.btn {
    border: 0;
    border-radius: 10px;
    padding: 11px 16px;
    font-weight: 750;
    cursor: pointer;
    display: inline-flex;
    justify-content: center;
    align-items: center;
}

.btn--primary {
    background: var(--color-primary);
    color: #111827;
}

.btn--primary:hover {
    background: var(--color-primary-dark);
}

.btn--block {
    width: 100%;
}

.alert {
    border-radius: 12px;
    padding: 12px 14px;
    margin-bottom: 18px;
    border: 1px solid transparent;
}

.alert--error {
    background: #fef3f2;
    border-color: #fecdca;
    color: var(--color-error);
}

.alert--success {
    background: #ecfdf3;
    border-color: #abefc6;
    color: var(--color-success);
}

@media (max-width: 860px) {
    .topbar {
        align-items: flex-start;
        flex-direction: column;
        padding: 16px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .auth-card {
        padding: 24px;
    }
}

.card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 18px;
    box-shadow: var(--shadow-card);
    padding: 22px;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    text-align: left;
    padding: 14px;
    border-bottom: 1px solid var(--color-border);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 20px;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.btn--small {
    padding: 7px 10px;
    font-size: 13px;
}