:root {
    --bg: #f4f6fb;
    --card: #ffffff;
    --ink: #1d2430;
    --muted: #5b6578;
    --border: #d7dcea;
    --navy: #10104f;
    --wine: #7c2b62;
    --magenta: #d73b79;
    --pink: #ff4f70;
    --danger: #b4233f;
    --success: #0f8a52;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(1200px 550px at 10% -10%, #e9ecff 0%, transparent 60%),
        radial-gradient(1200px 650px at 100% -20%, #ffdce7 0%, transparent 55%),
        var(--bg);
}

.login-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
}

.login-card {
    width: min(430px, 92vw);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 28px;
    box-shadow: 0 20px 40px rgba(16, 16, 79, 0.12);
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 2;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    background: linear-gradient(120deg, var(--navy), var(--wine), var(--magenta));
    color: #fff;
}

.brand-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-wrap small {
    display: block;
    opacity: 0.85;
}

.brand-icon {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: linear-gradient(150deg, #fff, #ffd4e5);
}

.layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    min-height: calc(100vh - 62px);
}

.sidebar {
    background: #fff;
    border-right: 1px solid var(--border);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.nav-link {
    text-decoration: none;
    color: var(--ink);
    border: 1px solid transparent;
    padding: 10px 12px;
    border-radius: 10px;
    font-weight: 600;
}

.nav-link:hover {
    border-color: var(--border);
    background: #f8f9ff;
}

.nav-link.active {
    color: #fff;
    border-color: transparent;
    background: linear-gradient(120deg, var(--navy), var(--wine));
}

.content {
    padding: 18px;
}

h1, h2, h3 {
    margin-top: 0;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px;
    margin-bottom: 16px;
    box-shadow: 0 8px 20px rgba(30, 40, 100, 0.05);
}

.metric strong {
    font-size: 1.35rem;
}

.grid-2, .grid-3, .grid-4 {
    display: grid;
    gap: 16px;
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

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

th, td {
    padding: 10px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

input, select, button {
    font: inherit;
}

input[type="text"], input[type="email"], input[type="password"], input[type="number"], select {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px;
    background: #fff;
}

label {
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: 4px;
    display: block;
}

.form-grid {
    display: grid;
    gap: 8px;
}

.form-inline {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.row-check {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 6px 0;
}

.btn {
    display: inline-block;
    border: 1px solid transparent;
    border-radius: 10px;
    padding: 10px 13px;
    text-decoration: none;
    cursor: pointer;
    font-weight: 600;
}

.btn-primary {
    background: linear-gradient(120deg, var(--navy), var(--wine), var(--magenta));
    color: #fff;
}

.btn-light {
    background: #fff;
    color: var(--ink);
    border-color: var(--border);
}

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

.alert {
    padding: 10px 12px;
    border-radius: 10px;
    margin-bottom: 14px;
    border: 1px solid transparent;
}

.alert-success {
    background: #ecfff5;
    border-color: #b7efd0;
    color: #075636;
}

.alert-error {
    background: #fff1f4;
    border-color: #f5b6c3;
    color: #7a1730;
}

.token-list {
    margin-top: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.chip {
    display: inline-block;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 6px 10px;
    background: #fff;
    font-size: 0.85rem;
}

.inline-form {
    display: inline-block;
    margin-right: 6px;
}

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

.parents-toolbar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: end;
    gap: 12px;
    margin-bottom: 12px;
}

.parents-search {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.parents-search input[type="text"] {
    width: min(360px, 100%);
}

.parent-list {
    display: grid;
    gap: 10px;
}

.parent-item {
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #fff;
    overflow: hidden;
}

.parent-summary {
    list-style: none;
    cursor: pointer;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    align-items: center;
    padding: 12px;
    background: linear-gradient(180deg, #fff, #fafbff);
}

.parent-summary::-webkit-details-marker {
    display: none;
}

.parent-main {
    display: grid;
    gap: 4px;
}

.parent-main span {
    color: var(--muted);
    font-size: 0.92rem;
}

.parent-metrics {
    display: grid;
    gap: 6px;
    justify-items: end;
    text-align: right;
    font-size: 0.92rem;
}

.parent-panel {
    border-top: 1px solid var(--border);
    padding: 12px;
    display: grid;
    gap: 10px;
}

.pagination {
    margin-top: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    justify-content: center;
}

.btn-disabled {
    opacity: 0.55;
    pointer-events: none;
}

.password-wrap {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
    align-items: center;
}

.eye-btn {
    min-width: 60px;
}

code {
    background: #f0f3fa;
    padding: 3px 5px;
    border-radius: 6px;
    border: 1px solid var(--border);
}

@media (max-width: 1000px) {
    .layout {
        grid-template-columns: 1fr;
    }
    .sidebar {
        border-right: 0;
        border-bottom: 1px solid var(--border);
        flex-direction: row;
        overflow-x: auto;
    }
    .grid-4, .grid-3, .grid-2 {
        grid-template-columns: 1fr;
    }
    .parent-summary {
        grid-template-columns: 1fr;
    }
    .parent-metrics {
        justify-items: start;
        text-align: left;
    }
}