:root {
    --bg: #0f1218;
    --panel: #161b24;
    --border: #262d3a;
    --text: #e6e9ef;
    --muted: #8a93a6;
    --accent: #4f7cff;
    --accent-hover: #3d67e6;
    --danger: #e5484d;
    --success: #2ecc71;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1000px; margin: 0 auto; padding: 24px 20px 60px; }

.topbar { background: var(--panel); border-bottom: 1px solid var(--border); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; }
.brand { font-weight: 700; font-size: 18px; color: var(--text); }
.topbar nav { display: flex; align-items: center; gap: 16px; font-size: 14px; }
.topbar nav a { color: var(--muted); }
.topbar nav a:hover { color: var(--text); }

h1 { font-size: 24px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0 0 12px; }
.muted { color: var(--muted); font-size: 14px; }

code {
    background: #1d2330;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
}

.stat-cards { display: flex; gap: 16px; margin: 20px 0; flex-wrap: wrap; }
.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 22px;
    min-width: 180px;
}
.card-label { color: var(--muted); font-size: 13px; margin-bottom: 6px; }
.card-value { font-size: 28px; font-weight: 700; }

.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 22px;
    margin-bottom: 20px;
}

.upload-form { max-width: 560px; }
.form-row { margin-bottom: 14px; display: flex; flex-direction: column; gap: 6px; }
label { font-size: 13px; color: var(--muted); }
input[type=text], input[type=password], input[type=file] {
    background: #0f1420;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px 12px;
    color: var(--text);
    font-size: 14px;
}
input:focus { outline: none; border-color: var(--accent); }

button, .btn-small {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 10px 18px;
    font-size: 14px;
    cursor: pointer;
    display: inline-block;
}
button:hover, .btn-small:hover { background: var(--accent-hover); text-decoration: none; }
.btn-small { padding: 6px 12px; font-size: 13px; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #c9302c; }

.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th, .data-table td {
    text-align: left;
    padding: 10px 8px;
    border-bottom: 1px solid var(--border);
}
.data-table th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
.actions { display: flex; gap: 8px; }
.truncate { max-width: 320px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.alert-error { background: rgba(229,72,77,0.15); border: 1px solid rgba(229,72,77,0.4); color: #ff8b8e; }
.alert-success { background: rgba(46,204,113,0.15); border: 1px solid rgba(46,204,113,0.4); color: #6fe3a0; }

.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-box {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px;
    width: 100%;
    max-width: 360px;
}
.login-box h1 { font-size: 19px; text-align: center; margin-bottom: 20px; }
.login-box form { display: flex; flex-direction: column; gap: 12px; }
.login-box button { margin-top: 8px; }