:root {
    --ng-primary: #17365d;
    --ng-primary-hover: #244d7e;
    --ng-accent: #16a3a3;
    --ng-background: #f3f6fa;
    --ng-surface: #ffffff;
    --ng-text: #263445;
    --ng-muted: #68788b;
    --ng-border: #dce4ed;
    --ng-sidebar-width: 250px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--ng-background);
    color: var(--ng-text);
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
    font-size: 14px;
    line-height: 1.5;
}

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

a:hover {
    text-decoration: underline;
}

.seeyou-layout {
    display: flex;
    min-height: 100vh;
}

.seeyou-sidebar {
    width: var(--ng-sidebar-width);
    background: var(--ng-primary);
    color: white;
    padding: 24px 16px;
    flex-shrink: 0;
}

.seeyou-brand {
    padding: 8px 12px 28px;
    font-size: 23px;
    font-weight: 750;
    letter-spacing: 0.5px;
}

.seeyou-brand span {
    color: #59dddd;
}

.seeyou-nav a {
    display: block;
    padding: 12px 14px;
    margin-bottom: 5px;
    border-radius: 8px;
    color: #e4edf7;
}

.seeyou-nav a:hover,
.seeyou-nav a.active {
    background: rgba(255,255,255,0.14);
    color: white;
    text-decoration: none;
}

.seeyou-main {
    flex: 1;
    min-width: 0;
}

.seeyou-header {
    min-height: 70px;
    background: white;
    border-bottom: 1px solid var(--ng-border);
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.seeyou-content {
    max-width: 1300px;
    margin: 0 auto;
    padding: 32px;
}

.seeyou-card {
    background: var(--ng-surface);
    border: 1px solid var(--ng-border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 3px 12px rgba(20,45,75,0.035);
}

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

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

.seeyou-button {
    display: inline-block;
    background: var(--ng-primary);
    color: white;
    border: 0;
    border-radius: 7px;
    padding: 10px 17px;
    font: inherit;
    cursor: pointer;
}

.seeyou-button:hover {
    background: var(--ng-primary-hover);
    color: white;
    text-decoration: none;
}

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

.seeyou-table th,
.seeyou-table td {
    padding: 13px 15px;
    text-align: left;
    border-bottom: 1px solid var(--ng-border);
}

.seeyou-table th {
    color: var(--ng-muted);
    background: #f7f9fc;
    font-weight: 600;
}

.seeyou-field {
    margin-bottom: 18px;
}

.seeyou-field label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
}

.seeyou-field input,
.seeyou-field textarea,
.seeyou-field select {
    width: 100%;
    max-width: 650px;
    padding: 11px 12px;
    border: 1px solid var(--ng-border);
    border-radius: 7px;
    background: white;
    color: var(--ng-text);
    font: inherit;
}

.seeyou-alert {
    padding: 14px 18px;
    border: 1px solid #e8b9b9;
    background: #fff3f3;
    border-radius: 8px;
    margin-bottom: 20px;
}

@media (max-width: 800px) {
    .seeyou-layout {
        flex-direction: column;
    }

    .seeyou-sidebar {
        width: 100%;
        padding: 12px;
    }

    .seeyou-brand {
        padding-bottom: 12px;
    }

    .seeyou-nav {
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
    }

    .seeyou-header,
    .seeyou-content {
        padding: 18px;
    }
}