:root {
    color-scheme: light;
    --bg: #f7f8fa;
    --panel: #ffffff;
    --text: #17202a;
    --muted: #667085;
    --line: #d8dee8;
    --accent: #1267b3;
    --accent-dark: #0d4d86;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button {
    border: 0;
    border-radius: 7px;
    background: var(--accent);
    color: white;
    cursor: pointer;
    font: inherit;
    font-weight: 650;
    min-height: 40px;
    padding: 0 14px;
}

a.button-link {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0 14px;
    border-radius: 7px;
    background: var(--accent);
    color: white;
    font-weight: 650;
    text-decoration: none;
}

button:hover {
    background: var(--accent-dark);
}

a.button-link:hover {
    background: var(--accent-dark);
}

#devLoginButton {
    background: #5f6b7a;
}

#devLoginButton:hover {
    background: #46515f;
}

.shell {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
    padding: 30px 0;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 18px 0 22px;
}

h1 {
    margin: 0 0 5px;
    font-size: 30px;
    line-height: 1.1;
    letter-spacing: 0;
}

p {
    margin: 0;
    color: var(--muted);
}

.actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.notice {
    display: flex;
    gap: 10px;
    align-items: center;
    border: 1px solid #b8d4f0;
    background: #eef6ff;
    color: #0d4778;
    border-radius: 8px;
    padding: 12px 14px;
    margin-bottom: 18px;
}

.content {
    border: 1px solid var(--line);
    background: var(--panel);
    border-radius: 8px;
    min-height: 320px;
    padding: 16px;
}

.empty {
    color: var(--muted);
    padding: 72px 16px;
    text-align: center;
}

.video-list {
    display: grid;
    gap: 10px;
}

.video-card {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 16px;
    align-items: center;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 14px;
}

.video-card h2 {
    margin: 0 0 5px;
    font-size: 17px;
    line-height: 1.25;
    letter-spacing: 0;
}

.admin-form {
    display: grid;
    gap: 16px;
    max-width: 560px;
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.section-title {
    margin: 0 0 16px;
    font-size: 18px;
    line-height: 1.2;
    letter-spacing: 0;
}

.admin-form label {
    display: grid;
    gap: 7px;
    color: var(--text);
    font-weight: 650;
}

.admin-form input,
.admin-form select,
.admin-form textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 7px;
    padding: 10px 12px;
    font: inherit;
}

.admin-form input,
.admin-form select {
    min-height: 42px;
}

.admin-form textarea {
    resize: vertical;
}

.checkbox-row {
    display: flex !important;
    grid-template-columns: none !important;
    align-items: center;
    gap: 10px !important;
    font-weight: 650;
}

.checkbox-row input {
    width: 18px;
    min-height: 18px;
    padding: 0;
}

.admin-form button {
    justify-self: start;
}

.form-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

button.secondary {
    background: #5f6b7a;
}

button.secondary:hover {
    background: #46515f;
}

.result {
    margin-top: 18px;
    min-height: 24px;
    font-weight: 650;
}

.result.success {
    color: #137333;
}

.result.error {
    color: #b42318;
}

.table-wrap {
    margin-top: 18px;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

th,
td {
    border-bottom: 1px solid var(--line);
    padding: 10px 8px;
    text-align: left;
    vertical-align: top;
}

th {
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
}

.row-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.table-button {
    min-height: 32px;
    padding: 0 10px;
    font-size: 13px;
}

.video-card .meta {
    color: var(--muted);
    font-size: 14px;
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 10;
    display: grid;
    grid-template-rows: 48px 1fr;
    background: #050505;
}

.modal[hidden] {
    display: none;
}

.modal-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 0 14px;
    background: #101418;
    color: white;
}

#closePlayerButton {
    width: 36px;
    min-height: 36px;
    padding: 0;
    background: #2a313a;
    font-size: 24px;
    line-height: 1;
}

#playerFrame {
    width: 100%;
    height: 100%;
    border: 0;
    background: #050505;
}

@media (max-width: 680px) {
    .topbar,
    .notice,
    .video-card {
        align-items: stretch;
        grid-template-columns: 1fr;
        flex-direction: column;
    }

    .actions {
        justify-content: flex-start;
    }

    .admin-grid {
        grid-template-columns: 1fr;
    }
}