:root {
    --bg: #f4f6f8;
    --fg: #1f2933;
    --muted: #62707b;
    --card: #ffffff;
    --border: #d8dee4;
    --accent: #1f6feb;
    --accent-dk: #1859c2;
    --ok-bg: #e6f4ea;
    --ok-fg: #1e6b3a;
    --err-bg: #fdecea;
    --err-fg: #a01c1c;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 14px;
}

.topbar {
    background: #1f2933;
    color: #fff;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.topbar .brand {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    letter-spacing: .3px;
}
.topbar .who { margin-right: 12px; opacity: .85; }
.btn-link {
    background: transparent;
    border: 1px solid #4a5560;
    color: #fff;
    padding: 4px 10px;
    cursor: pointer;
    border-radius: 4px;
}
.btn-link:hover { background: #4a5560; }
.logout-form { display: flex; align-items: center; }

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

.foot {
    text-align: center;
    color: var(--muted);
    padding: 20px;
    font-size: 12px;
}

h1, h2 { margin: 0 0 12px; }
h1 { font-size: 22px; }
h2 { font-size: 16px; margin-top: 24px; }

.alert {
    padding: 10px 12px;
    border-radius: 6px;
    margin-bottom: 16px;
    border: 1px solid transparent;
}
.alert.ok  { background: var(--ok-bg);  color: var(--ok-fg);  border-color: #b8dec5; }
.alert.error { background: var(--err-bg); color: var(--err-fg); border-color: #f4c1bd; }

.breadcrumbs {
    background: var(--card);
    border: 1px solid var(--border);
    padding: 10px 14px;
    border-radius: 6px;
    margin-bottom: 16px;
}
.breadcrumbs a { color: var(--accent); text-decoration: none; }
.breadcrumbs a:hover { text-decoration: underline; }
.breadcrumbs .sep { color: var(--muted); margin: 0 6px; }

.upload, .listing {
    background: var(--card);
    border: 1px solid var(--border);
    padding: 14px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
}
.upload form {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}
.upload .cb {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--muted);
}
.upload .hint {
    color: var(--muted);
    font-size: 12px;
    margin-left: auto;
}

.btn {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 6px 14px;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    font: inherit;
    display: inline-block;
}
.btn:hover { background: var(--accent-dk); }
.btn.primary { background: var(--accent); }
.btn.small { padding: 4px 10px; font-size: 12px; }

table {
    width: 100%;
    border-collapse: collapse;
}
table th, table td {
    text-align: left;
    padding: 8px 10px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
table th { background: #fafbfc; color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }
table td a { color: var(--accent); text-decoration: none; }
table td a:hover { text-decoration: underline; }
table .r { text-align: right; white-space: nowrap; }

.empty { color: var(--muted); font-style: italic; }

.login-card {
    max-width: 360px;
    margin: 60px auto;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 1px 2px rgba(0,0,0,.04);
}
.login-card h1 { font-size: 20px; margin-bottom: 16px; }
.login-card label { display: block; margin-bottom: 12px; }
.login-card label span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.login-card input[type=text],
.login-card input[type=password] {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font: inherit;
}
.login-card button { width: 100%; padding: 8px; margin-top: 6px; }