:root {
    --bg: #f5f7fb;
    --card: #ffffff;
    --text: #1f2937;
    --border: #d9e2ef;
    --primary: #000000;
    --success: #15803d;
    --danger: #b91c1c;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
    font-family: Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.container,
.guest-container {
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

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

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.card,
.auth-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
}

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

.table th,
.table td {
    border-bottom: 1px solid var(--border);
    padding: 12px;
    text-align: left;
}

.form-group {
    margin-bottom: 16px;
}

input:not([type="checkbox"]):not([type="radio"]),
textarea,
select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
}

.btn,
button {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 10px 16px;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
}

.btn-danger {
    background: #b91c1c;
}

.btn-secondary {
    background: #475569;
}

.btn-small {
    padding: 8px 12px;
    font-size: 14px;
}

.builder-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.builder-option-row {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-bottom: 10px;
}

.builder-option-input {
    flex: 1;
}

.question-options-container {
    background: #f8fafc;
    border: 1px dashed var(--border);
    border-radius: 8px;
    padding: 15px;
}

.alert {
    margin-bottom: 16px;
    padding: 12px 16px;
    border-radius: 8px;
}

.alert-success {
    background: #dcfce7;
    color: var(--success);
}

.alert-error {
    background: #fee2e2;
    color: var(--danger);
}

.error {
    color: var(--danger);
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.option-line {
    display: block;
    margin-bottom: 8px;
}

.rating-row {
    display: flex;
    gap: 12px;
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .table {
        display: block;
        overflow-x: auto;
    }
}

.checkbox-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #f8fbff;
}

.checkbox-row__label {
    margin: 0;
    font-weight: 600;
    color: var(--text);
    flex: 1 1 auto;
}

.checkbox-row input[type="checkbox"],
input[type="checkbox"].checkbox-row__input {
    width: 18px;
    height: 18px;
    margin: 0;
    accent-color: var(--primary);
    cursor: pointer;
    flex-shrink: 0;
}

.app-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-shell > main {
    flex: 1 0 auto;
}

.guest-auth-wrapper {
    flex: 1 0 auto;
}

.footer {
    margin-top: auto;
}