:root {
    --color-bg: #f4f6f6;
    --color-card: #ffffff;
    --color-border: #dde2e2;
    --color-text: #2a2a2a;
    --color-muted: #6b7280;
    --color-primary: #2b97a4;
    --color-primary-dark: #227a85;
    --color-danger: #dc2626;
    --color-success: #15803d;
    --color-error-bg: #fdecea;
    --color-success-bg: #eaf7ed;
    --color-info-bg: #e8f5f7;
    --color-topbar-bg: #3a3a3a;
}

* {
    box-sizing: border-box;
}

input[type="radio"],
input[type="checkbox"] {
    accent-color: var(--color-primary);
}

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

h1, h2, h3 {
    font-family: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.topbar {
    background: var(--color-topbar-bg);
    border-bottom: 1px solid var(--color-topbar-bg);
}

.topbar-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.15rem;
    font-family: "Manrope", sans-serif;
}

.brand-logo {
    height: 30px;
    width: auto;
    display: block;
}

.topbar nav {
    display: flex;
    align-items: center;
    gap: 16px;
}

.topbar nav a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
}

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

.user-name {
    color: #c9cccc;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px 20px 60px;
}

.card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 24px 28px;
    margin-bottom: 24px;
}

.auth-card {
    max-width: 420px;
    margin: 60px auto;
}

.column-hint {
    color: var(--color-muted);
    font-size: 0.9rem;
    margin-top: -6px;
}

.column-hint.trusted-device-notice {
    margin-top: 18px;
}

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

.tooltip {
    position: relative;
    cursor: default;
    border-bottom: 1px dotted var(--color-muted);
}

.toggle-row.tooltip {
    border-bottom: none;
    width: fit-content;
    padding-bottom: 4px;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 0;
    bottom: 100%;
    margin-bottom: 6px;
    background: var(--color-text);
    color: #fff;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.85rem;
    white-space: normal;
    max-width: 320px;
    overflow: hidden;
    text-overflow: ellipsis;
    opacity: 0;
    visibility: hidden;
    transform: translateY(4px);
    transition: opacity 0.1s ease, transform 0.1s ease;
    z-index: 10;
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.table-responsive {
    overflow-x: auto;
}

h1 {
    margin-top: 0;
    font-size: 1.4rem;
}

label {
    display: block;
    margin-bottom: 14px;
    font-weight: 500;
}

form input[type="text"],
form input[type="password"],
form input[type="email"],
form input[type="tel"],
form textarea,
form select {
    width: 100%;
    padding: 9px 10px;
    margin-top: 5px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
}

.checkbox-label {
    font-weight: 400;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.phone-input-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 5px;
    margin-bottom: 18px;
}

.phone-plus {
    color: var(--color-muted);
    font-weight: 500;
}

form input.phone-prefix-input {
    width: 56px;
    flex-shrink: 0;
    padding: 9px 8px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    text-align: center;
}

.phone-input-row input[type="tel"] {
    flex: 1;
}

.field-group {
    margin-bottom: 14px;
}

.toggle-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 6px;
}

.toggle-label {
    font-weight: 400;
    color: var(--color-muted);
    cursor: pointer;
    transition: color 0.15s ease, font-weight 0.15s ease;
    width: 82px;
}

.toggle-label:first-child {
    text-align: right;
}

.toggle-label:first-child.active {
    color: #1a1a1a;
    font-weight: 700;
}

.toggle-label:last-child.active {
    color: var(--color-primary);
    font-weight: 700;
}

.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
    flex-shrink: 0;
    margin-bottom: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.switch .slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #1a1a1a;
    border-radius: 26px;
    transition: background-color 0.15s ease;
}

.switch .slider::before {
    content: "";
    position: absolute;
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: #fff;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    transition: transform 0.15s ease;
}

.switch input:checked + .slider {
    background-color: var(--color-primary);
}

.switch input:checked + .slider::before {
    transform: translateX(24px);
}

.preview-box {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 14px 16px;
    white-space: pre-wrap;
    font-size: 0.95rem;
    margin-bottom: 8px;
    min-height: 1.2em;
}

.preview-meta {
    color: var(--color-muted);
    font-size: 0.85rem;
    margin: 0 0 20px;
}

button,
.button {
    display: inline-block;
    background: var(--color-primary);
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
}

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

.button-secondary {
    background: #fff;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.button-secondary:hover {
    background: #f0fdfa;
}

.link-button {
    background: none;
    border: none;
    color: var(--color-primary);
    padding: 0;
    text-decoration: underline;
    cursor: pointer;
    font-size: 0.95rem;
}

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

.inline-form {
    display: inline;
}

.resend-form {
    display: block;
    margin-top: 16px;
}

.alert {
    padding: 10px 14px;
    border-radius: 6px;
    margin-bottom: 16px;
}

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

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

.alert-info {
    background: var(--color-info-bg);
    color: var(--color-primary-dark);
}

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

.data-table th,
.data-table td {
    text-align: left;
    vertical-align: top;
    padding: 10px 8px;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.95rem;
}

.admin-stats {
    display: flex;
    gap: 16px;
    margin: 20px 0;
}

.stat-box {
    background: var(--color-bg);
    border-radius: 8px;
    padding: 16px 20px;
    display: flex;
    flex: 1;
    flex-direction: column;
    align-items: center;
    min-width: 140px;
}

.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
}

.admin-nav {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
    background: var(--color-bg);
    color: var(--color-muted);
}

.badge-success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

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

.import-cell-input {
    width: 100%;
    min-width: 90px;
    padding: 5px 6px;
    border: 1px solid var(--color-border);
    border-radius: 5px;
    font-size: 0.88rem;
    font-family: inherit;
}

.import-cell-missing {
    border-color: var(--color-danger);
    background: var(--color-error-bg);
}

.import-raw-hint {
    margin: 3px 0 0;
    color: var(--color-muted);
    font-size: 0.75rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 160px;
}

@media (max-width: 640px) {
    .container {
        padding: 16px 14px 40px;
    }

    .topbar-inner {
        padding: 12px 14px;
        flex-wrap: wrap;
        gap: 8px;
    }

    .topbar nav {
        flex-wrap: wrap;
        gap: 10px 14px;
        font-size: 0.9rem;
    }

    .card {
        padding: 18px 16px;
    }

    .auth-card {
        margin: 24px auto;
    }

    .data-table th,
    .data-table td {
        padding: 8px 6px;
        font-size: 0.88rem;
    }

    .admin-stats {
        flex-wrap: wrap;
    }

    .stat-box {
        flex: 1 1 auto;
        min-width: 0;
    }

    .admin-nav .button {
        width: 100%;
        text-align: center;
    }

    .tooltip::after {
        max-width: 200px;
    }
}