:root {
    --bg: #f3f6fd;
    --card: #ffffff;
    --text: #1a2340;
    --muted: #6e7a9a;
    --primary: #3f6df6;
    --primary-dark: #2854d6;
    --danger: #e25252;
    --success: #159d6f;
    --warning: #c67a1b;
    --border: #dbe4ff;
    --shadow: 0 8px 24px rgba(24, 40, 90, 0.08);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
    background: linear-gradient(180deg, #eff3ff 0%, var(--bg) 100%);
    color: var(--text);
}

.app-shell {
    max-width: 1200px;
    margin: 32px auto;
    padding: 0 16px 32px;
}

.small-shell { max-width: 860px; }

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 20px;
}

.app-header h1 {
    margin: 0;
    font-size: 1.8rem;
}

.app-header p {
    color: var(--muted);
    margin: 6px 0 0;
}

.panel {
    background: var(--card);
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 18px;
    margin-bottom: 16px;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 220px auto;
    gap: 12px;
    align-items: end;
}

.form-grid.two-col {
    grid-template-columns: 1fr 1fr;
    margin-top: 12px;
}

label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-weight: 600;
    font-size: 0.92rem;
}

input, select, textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--border);
    font-size: 0.95rem;
    color: var(--text);
    background: #fff;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--primary);
    outline: 2px solid rgba(63, 109, 246, 0.15);
}

textarea {
    min-height: 180px;
    resize: vertical;
}

.btn {
    border: none;
    border-radius: 12px;
    padding: 12px 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all .2s ease;
    text-decoration: none;
    text-align: center;
}

.btn:disabled {
    opacity: .55;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover { background: var(--primary-dark); }

.btn-secondary {
    background: #eaf0ff;
    color: #2b458f;
}

.btn-secondary:hover { background: #dce6ff; }

.btn-danger {
    background: #fee;
    color: #b73535;
}

.btn-danger:hover { background: #ffd9d9; }

.pagination-controls,
.status-line,
.actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.pagination-controls { margin-top: 12px; }

.search-options {
    margin-top: 12px;
}

.checkbox-inline {
    display: inline-flex;
    align-items: center;
    flex-direction: row;
    gap: 8px;
    font-weight: 600;
}

.feedback {
    margin-top: 8px;
    padding: 10px 12px;
    border-radius: 10px;
    font-size: 0.92rem;
}

.feedback.info { background: #ebf2ff; color: #28458b; }
.feedback.success { background: #e7f7f1; color: #156949; }
.feedback.warning { background: #fff7e8; color: #915908; }
.feedback.error { background: #ffecec; color: #9d2c2c; }

.loader {
    width: 36px;
    height: 36px;
    border: 4px solid #d7e3ff;
    border-top-color: var(--primary);
    border-radius: 50%;
    margin-top: 10px;
    animation: spin .8s linear infinite;
}

.hidden { display: none; }

@keyframes spin { to { transform: rotate(360deg); } }

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 14px;
    margin-bottom: 16px;
}

.video-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow);
    padding: 14px;
    transition: transform .18s ease, box-shadow .18s ease;
}

.video-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(24, 40, 90, 0.12);
}

.video-card h3 {
    margin: 8px 0;
    font-size: 1rem;
    line-height: 1.45;
}

.video-card a {
    color: var(--primary-dark);
    word-break: break-all;
    font-size: .9rem;
}

.textareas {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 12px;
}

.settings-form .actions { margin-top: 14px; }

@media (max-width: 960px) {
    .form-grid { grid-template-columns: 1fr; }
    .textareas { grid-template-columns: 1fr; }
    .filters-grid { grid-template-columns: 1fr; }
}


.filters-panel h2 {
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.filters-grid {
    grid-template-columns: 1.3fr 1fr 1fr 1fr auto;
}

.filter-actions {
    display: flex;
    align-items: end;
}

.video-meta {
    display: grid;
    gap: 4px;
    margin-bottom: 8px;
    color: var(--muted);
    font-size: .9rem;
}