* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg: #f5f6f8;
    --card: #ffffff;
    --border: #e1e4e8;
    --text: #1f2328;
    --muted: #6e7781;
    --primary: #0969da;
    --primary-hover: #0858bd;
    --danger: #cf222e;
    --danger-hover: #a40e26;
    --success: #1a7f37;
    --warning: #9a6700;
    --radius: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.muted { color: var(--muted); font-size: 0.9em; }
.center { text-align: center; }
.num { text-align: right; font-variant-numeric: tabular-nums; }

.topbar {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
    margin-bottom: 24px;
}
.topbar-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.brand {
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    color: var(--text);
    letter-spacing: -0.02em;
}
.topbar nav a {
    margin-left: 20px;
    text-decoration: none;
    color: var(--text);
    font-size: 15px;
}
.topbar nav a:hover { color: var(--primary); }
.topbar nav a.muted { color: var(--muted); }

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px 60px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    gap: 12px;
    flex-wrap: wrap;
}
.page-header h1 { font-size: 24px; }

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}
.card h2 { font-size: 16px; margin-bottom: 16px; }
.card h3 { font-size: 14px; margin: 20px 0 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }

.card-danger {
    background: #fff5f5;
    border: 1px solid #f8c0c0;
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 20px;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.metric-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
}
.metric-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 6px; }
.metric-value { font-size: 24px; font-weight: 600; }

.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    background: var(--card);
    color: var(--text);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.1s;
}
.btn:hover { background: #f0f1f3; }
.btn-primary { background: var(--primary); color: white; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { background: var(--danger); color: white; border-color: var(--danger); }
.btn-danger:hover { background: var(--danger-hover); }
.btn-secondary { background: var(--card); color: var(--text); border-color: var(--border); }
.btn-block { width: 100%; }

.btn-link-danger {
    background: none;
    border: none;
    color: var(--danger);
    font-size: 13px;
    cursor: pointer;
    padding: 4px 0;
}
.btn-link-danger:hover { text-decoration: underline; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
@media (max-width: 600px) {
    .form-row { grid-template-columns: 1fr; }
}
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 14px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    background: var(--card);
    color: var(--text);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.15);
}
.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}
.data-table th,
.data-table td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
.data-table th {
    font-weight: 600;
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table a { color: var(--primary); text-decoration: none; }
.data-table a:hover { text-decoration: underline; }

.status {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}
.status-open { background: #ddf4ff; color: #0969da; }
.status-processing { background: #fff8c5; color: #9a6700; }
.status-closed { background: #e8eaee; color: #6e7781; }

.badge {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 4px;
    background: #eef2f6;
    color: var(--muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.attach-form {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 16px;
}
.attach-form input[type="text"],
.attach-form select {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 13px;
}
.attach-form input[type="file"] { font-size: 13px; }

.attachment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
}
.attachment-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px;
    background: #fafbfc;
}
.attachment-item img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 4px;
    display: block;
}
.attachment-item .file-link {
    display: block;
    padding: 30px 8px;
    text-align: center;
    color: var(--primary);
    text-decoration: none;
    font-size: 13px;
    background: var(--card);
    border-radius: 4px;
}
.attachment-meta {
    display: flex;
    gap: 6px;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 6px;
    font-size: 12px;
}

.alert {
    padding: 12px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 14px;
}
.alert-error { background: #ffebe9; color: var(--danger); border: 1px solid #ffc1bc; }

.login-bg {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
.login-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    margin: 20px;
}
.login-card h1 {
    text-align: center;
    margin-bottom: 8px;
    font-size: 28px;
    letter-spacing: -0.02em;
}
.login-card p { margin-bottom: 24px; }