:root {
    --bg: #f4f7fb;
    --card: #ffffff;
    --text: #172033;
    --muted: #6b7280;
    --primary: #1769e0;
    --danger: #c62828;
    --border: #dbe2ea;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: var(--bg);
    color: var(--text);
}
.container {
    width: min(1100px, calc(100% - 28px));
    margin: 0 auto;
}
.topbar {
    background: #0f172a;
    color: #fff;
    padding: 14px 0;
}
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}
.brand {
    color: #fff;
    font-weight: 700;
    text-decoration: none;
    font-size: 18px;
}
nav {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
nav a {
    color: #fff;
    text-decoration: none;
}
.user-chip {
    background: rgba(255,255,255,.14);
    padding: 7px 10px;
    border-radius: 999px;
}
main { padding: 28px 0; }
.grid {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 20px;
    align-items: start;
}
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 20px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, .06);
}
.auth-card {
    max-width: 430px;
    margin: 40px auto;
}
h1, h2 { margin-top: 0; }
label {
    display: block;
    font-weight: 700;
    margin: 14px 0 6px;
}
input, select {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 9px;
    padding: 11px 12px;
    font: inherit;
    background: #fff;
}
small, .muted { color: var(--muted); }
button, .btn {
    display: inline-block;
    border: 0;
    border-radius: 9px;
    padding: 10px 13px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    background: var(--primary);
    color: #fff;
    margin-top: 12px;
}
.secondary { background: #334155; color: #fff; }
.danger { background: var(--danger); color: #fff; }
.alert {
    padding: 12px 14px;
    border-radius: 10px;
    margin-bottom: 16px;
}
.alert.success { background: #e9f8ef; color: #176b3a; }
.alert.error { background: #fdecec; color: #972222; }
.table-wrap { overflow-x: auto; }
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    text-align: left;
    border-bottom: 1px solid var(--border);
    padding: 11px 8px;
    vertical-align: top;
}
.actions {
    display: flex;
    gap: 8px;
    align-items: center;
}
.actions form, .inline-form { margin: 0; }
.actions button, .actions .btn { margin-top: 0; }
.inline-form {
    display: flex;
    gap: 6px;
    min-width: 250px;
}
.inline-form input { min-width: 140px; }
.inline-form button { margin-top: 0; }
.footer {
    color: var(--muted);
    padding: 18px 0 32px;
    text-align: center;
}
@media (max-width: 800px) {
    .grid { grid-template-columns: 1fr; }
    .nav { align-items: flex-start; }
    nav { justify-content: flex-end; }
}

/* View & Share */
.btn.view { background: #087f5b; }
.btn.share { background: #7c3aed; }
.btn.ghost { background: #e2e8f0; color: #172033; }
.status {
    display: inline-block;
    padding: 5px 9px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    white-space: nowrap;
}
.status.active { background: #dcfce7; color: #166534; }
.status.inactive { background: #f1f5f9; color: #64748b; }
.preview-card { padding: 18px; }
.preview-head {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 18px;
}
.preview-head h1 { margin-bottom: 4px; overflow-wrap: anywhere; }
.preview-area {
    min-height: 480px;
    background: #eef2f7;
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}
.preview-frame {
    width: 100%;
    min-height: 72vh;
    border: 0;
    background: #fff;
}
.preview-image {
    display: block;
    max-width: 100%;
    max-height: 75vh;
    object-fit: contain;
}
.preview-video {
    display: block;
    width: min(100%, 960px);
    max-height: 75vh;
}
.preview-area audio { width: min(90%, 650px); }
.preview-empty { text-align: center; padding: 40px 24px; max-width: 600px; }
.share-card { max-width: 760px; margin: 0 auto; }
.share-box {
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}
.copy-row { display: flex; gap: 8px; }
.copy-row input { flex: 1; }
.copy-row button { margin-top: 0; white-space: nowrap; }
.share-actions { margin-top: 12px; }
.share-actions form { margin: 0; }
.share-form { max-width: 420px; }
.share-card hr { border: 0; border-top: 1px solid var(--border); margin: 24px 0; }
.public-preview { margin-top: 8px; }
@media (max-width: 800px) {
    .preview-head { flex-direction: column; }
    .actions { flex-wrap: wrap; }
    .copy-row { flex-direction: column; }
    .copy-row button { width: 100%; }
    .preview-area { min-height: 360px; }
}