:root {
    --bg: #0b1016;
    --panel: #141c26;
    --panel-alt: #1a2432;
    --border: #2a394c;
    --text: #e4ebf3;
    --muted: #98a9be;
    --accent: #2ea8ff;
    --accent-soft: rgba(46, 168, 255, 0.18);
    --success: #52d685;
    --error: #ff6e7c;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    color: var(--text);
    background: radial-gradient(circle at 15% 0%, #122033 0%, var(--bg) 50%);
    font-family: Segoe UI, Tahoma, Arial, sans-serif;
}

.shell {
    max-width: 1280px;
    margin: 0 auto;
    padding: 20px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}

.topbar h1 { margin: 0; font-size: 1.6rem; }
.topbar p { margin: 4px 0 0; color: var(--muted); }

.navbar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}

.nav-btn {
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--muted);
    border-radius: 8px;
    padding: 9px 12px;
    cursor: pointer;
}

.nav-btn.active {
    color: var(--text);
    border-color: var(--accent);
    background: linear-gradient(180deg, var(--accent-soft), rgba(46, 168, 255, 0.06));
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.card {
    background: linear-gradient(180deg, var(--panel) 0%, #101924 100%);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px;
    margin-bottom: 12px;
}

.card h2, .card h3 { margin-top: 0; }

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 10px;
}

label { display: grid; gap: 6px; color: var(--muted); font-size: 0.9rem; }
input, select, button, textarea {
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--panel-alt);
    color: var(--text);
    padding: 9px;
    font: inherit;
}
button { cursor: pointer; }
button.primary { border-color: #2e7fb7; background: #185c84; }
button.danger { border-color: #9d3e48; background: #642731; }
button.ghost { background: transparent; }

.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { border: 1px solid var(--border); padding: 8px; text-align: left; }
th { cursor: pointer; color: #bad0e8; background: #1b2634; }

.toolbar {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.inline { display: flex; gap: 8px; flex-wrap: wrap; }
.small { font-size: 0.85rem; color: var(--muted); }
.error-text { color: var(--error); min-height: 20px; }
.success-text { color: var(--success); min-height: 20px; }

.pagination { display: flex; gap: 8px; align-items: center; margin-top: 10px; }

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 10px;
}

.metric {
    background: var(--panel-alt);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px;
}

.metric .value { font-size: 1.4rem; font-weight: 600; }

.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
}

.modal {
    width: min(680px, 94vw);
    background: #121b27;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px;
}

.toast {
    background: #102233;
    border: 1px solid #26506f;
    color: var(--text);
    border-radius: 8px;
    padding: 8px 10px;
    margin-top: 6px;
}