:root {
    --font-base: "Museo", "Helvetica Neue", Arial, sans-serif;
    --color-bg: #ffffff;
    --color-surface: #f5f5f5;
    --color-text: #111111;
    --color-muted: #4a4a4a;
    --color-border: #e7e7e7;
    --color-primary: #f80010;
    --color-primary-dark: #c7000d;
    --color-success: #0f8a5f;
    --color-error: #b22b2b;
}

.site-header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 2px 8px rgba(13, 16, 30, 0.04);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
}

.logo h1 {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
    color: var(--color-primary);
}

.main-nav {
    display: flex;
    align-items: center;
}

.logout-btn {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s ease;
}

.logout-btn:hover {
    background: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
}

body {
    margin: 0;
    font-family: var(--font-base);
    font-size: 16px;
    line-height: 1.6;
    background: #fafafa;
    color: var(--color-text);
}

.container {
    width: min(1040px, calc(100% - 36px));
    margin: 0 auto;
    padding: 36px 0;
}

.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 18px;
    box-shadow: 0 24px 60px rgba(13, 16, 30, 0.08);
    padding: 32px;
}

h1,
h2,
h3,
h4,
h5 {
    margin: 0 0 18px;
    font-weight: 700;
    color: var(--color-text);
}

p {
    margin: 0 0 18px;
    color: var(--color-muted);
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 10px;
    font-weight: 700;
    color: var(--color-text);
}

input[type="text"],
input[type="password"],
select,
textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    font-size: 15px;
    color: var(--color-text);
    background: #ffffff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="text"]:focus,
input[type="password"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(248, 0, 16, 0.12);
}

button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 20px;
    border: none;
    border-radius: 14px;
    background: var(--color-primary);
    color: #ffffff;
    cursor: pointer;
    font-size: 15px;
    font-weight: 700;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

button:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

button[style*="background: #dc2626"] {
    background: #b22b2b;
}

button[style*="background: #dc2626"]:hover {
    background: #8c2222;
}

.alert {
    padding: 16px 18px;
    border-radius: 14px;
    margin-bottom: 20px;
    font-weight: 600;
}

.alert.error {
    background: #fee8e8;
    color: var(--color-error);
}

.alert.success {
    background: #e9f8f2;
    color: var(--color-success);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 28px;
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    overflow: hidden;
}

thead {
    background: #fafafa;
}

th,
td {
    padding: 16px 18px;
    border-bottom: 1px solid var(--color-border);
    text-align: left;
    color: var(--color-text);
}

th {
    font-weight: 700;
}

tbody tr:hover {
    background: #f9f9f9;
}

code {
    display: inline-block;
    background: rgba(248, 0, 16, 0.08);
    padding: 5px 8px;
    border-radius: 8px;
    color: var(--color-primary-dark);
    font-size: 0.95em;
}

.footer {
    margin-top: 28px;
    font-size: 14px;
    color: var(--color-muted);
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

@media (max-width: 720px) {
    .container {
        padding: 28px 0;
    }

    .card {
        padding: 24px;
    }

    .header-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .logo h1 {
        font-size: 20px;
    }

    input[type="text"],
    input[type="password"],
    select {
        padding: 12px 14px;
    }

    th,
    td {
        padding: 14px 12px;
    }

    .migration-grid {
        grid-template-columns: 1fr;
    }
}

textarea {
    resize: vertical;
    min-height: 120px;
    font-family: inherit;
}

.migration-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 20px;
}

.migration-section {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 14px;
    border: 1px solid var(--color-border);
}

.migration-section h3 {
    margin: 0 0 12px;
    font-size: 18px;
    color: var(--color-text);
}

.migration-section p {
    margin: 0 0 16px;
    color: var(--color-muted);
    font-size: 14px;
}