:root {
    --bg: #0b1018;
    --panel: rgba(17, 24, 39, 0.92);
    --panel-soft: rgba(22, 30, 49, 0.88);
    --panel-strong: rgba(9, 14, 23, 0.96);
    --text: #ecf0f7;
    --muted: #b4bfd3;
    --accent: #8ad2c8;
    --accent-strong: #f0bf8b;
    --danger: #f0a0a8;
    --border: rgba(138, 210, 200, 0.18);
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.28);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    background:
        radial-gradient(circle at top left, rgba(138, 210, 200, 0.12), transparent 28%),
        radial-gradient(circle at top right, rgba(240, 191, 139, 0.08), transparent 20%),
        linear-gradient(180deg, #08111a 0%, #070c14 100%);
    color: var(--text);
    font-family: "Noto Sans JP", sans-serif;
    line-height: 1.6;
}

code {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    color: var(--accent-strong);
}

input,
textarea,
button {
    font: inherit;
}

input,
textarea {
    width: 100%;
    border: 1px solid var(--border);
    background: rgba(7, 12, 20, 0.9);
    color: var(--text);
    padding: 0.9rem 1rem;
}

textarea {
    resize: vertical;
    min-height: 7rem;
}

button,
.admin-link {
    border: 1px solid var(--border);
    background: rgba(138, 210, 200, 0.08);
    color: var(--accent);
    cursor: pointer;
    padding: 0.82rem 1rem;
    text-decoration: none;
    transition: 160ms ease;
}

button:hover,
.admin-link:hover {
    background: var(--accent);
    color: #071019;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

button:disabled:hover {
    background: rgba(138, 210, 200, 0.08);
    color: var(--accent);
}

.admin-shell {
    max-width: 1320px;
    margin: 0 auto;
    padding: 2.5rem 1.25rem 4rem;
}

.admin-header,
.admin-card,
.admin-tabs,
.admin-panel {
    margin-bottom: 1.25rem;
}

.admin-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1.5rem;
}

.admin-kicker {
    margin: 0 0 0.5rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.3em;
    font-size: 0.72rem;
}

.admin-header h1,
.admin-card h2,
.admin-modal-card h2,
.content-card h3 {
    margin: 0 0 0.65rem;
    font-family: "Cormorant Garamond", serif;
    font-weight: 600;
}

.admin-header p,
.admin-card p,
.admin-card li,
.content-card p {
    color: var(--muted);
}

.admin-card,
.content-card,
.content-preview,
.admin-modal-card {
    background: linear-gradient(180deg, var(--panel) 0%, var(--panel-soft) 100%);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.admin-card {
    padding: 1.4rem;
}

.admin-card--nested {
    margin: 0;
    padding: 1rem 1.1rem;
    background: linear-gradient(180deg, rgba(15, 21, 34, 0.92) 0%, rgba(10, 15, 24, 0.95) 100%);
}

.admin-link--ghost {
    background: transparent;
}

.admin-label,
.admin-meta-label,
.content-card legend,
.content-card-header span {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.72rem;
}

.admin-help,
.admin-status {
    font-size: 0.9rem;
}

.admin-status {
    min-height: 1.4em;
    margin: 0.85rem 0 0;
}

.admin-status[data-tone="success"] {
    color: #b9f0de;
}

.admin-status[data-tone="warning"] {
    color: #f4d39d;
}

.admin-status[data-tone="error"] {
    color: var(--danger);
}

.admin-token-row,
.admin-section-header,
.admin-health-header,
.content-card-header,
.admin-modal-header,
.admin-modal-actions {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.9rem;
}

.admin-meta-grid,
.admin-health-grid,
.admin-grid,
.content-layout,
.admin-form-grid,
.admin-checkbox-grid {
    display: grid;
    gap: 1rem;
}

.admin-meta-grid {
    margin-top: 1rem;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.admin-meta-card,
.admin-health {
    border: 1px solid var(--border);
    background: rgba(8, 13, 21, 0.5);
    padding: 1rem;
}

.admin-meta-value {
    margin: 0;
    color: var(--text);
}

.admin-health-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.health-pill {
    border: 1px solid var(--border);
    padding: 0.8rem 0.95rem;
    color: var(--text);
    background: rgba(138, 210, 200, 0.06);
}

.health-pill[data-state="ok"] {
    border-color: rgba(185, 240, 222, 0.45);
    color: #b9f0de;
}

.health-pill[data-state="warning"] {
    border-color: rgba(244, 211, 157, 0.42);
    color: #f4d39d;
}

.health-pill[data-state="error"] {
    border-color: rgba(240, 160, 168, 0.45);
    color: var(--danger);
}

.admin-tabs {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.admin-tab.is-active {
    background: var(--accent);
    color: #071019;
}

.admin-panel {
    display: none;
}

.admin-panel.is-active {
    display: block;
}

.content-sections {
    display: grid;
    gap: 1rem;
}

.content-card {
    padding: 1.2rem;
}

.content-layout {
    grid-template-columns: minmax(0, 1.8fr) minmax(260px, 1fr);
    align-items: start;
}

.content-form-grid {
    display: grid;
    gap: 0.85rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.content-form-grid--single {
    grid-template-columns: minmax(0, 1fr);
}

.admin-field {
    display: grid;
    gap: 0.45rem;
}

.admin-field label,
.admin-field span,
.content-item-header strong {
    color: var(--text);
    font-weight: 500;
}

.admin-field textarea[data-markdown="true"] {
    min-height: 10rem;
}

.content-preview {
    padding: 1rem;
    background: linear-gradient(180deg, rgba(11, 17, 28, 0.92) 0%, rgba(8, 12, 21, 0.96) 100%);
}

.content-preview h4 {
    margin: 0 0 0.7rem;
    font-size: 0.95rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.14em;
}

.content-preview-body {
    color: var(--text);
}

.content-preview-body p,
.content-preview-body ul,
.content-preview-body ol {
    margin: 0 0 0.9rem;
}

.content-preview-body a {
    color: var(--accent);
}

.content-list {
    display: grid;
    gap: 0.8rem;
}

.content-item {
    border: 1px solid var(--border);
    background: rgba(9, 15, 24, 0.55);
    padding: 1rem;
}

.content-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
}

.content-item-actions {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.content-item-actions button {
    padding: 0.55rem 0.75rem;
}

.admin-table-wrap {
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th,
.admin-table td {
    border-bottom: 1px solid var(--border);
    padding: 0.85rem 0.7rem;
    text-align: left;
    vertical-align: top;
}

.admin-table th {
    color: var(--accent);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

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

.admin-grid--triple {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.admin-results {
    display: grid;
    gap: 0.75rem;
}

.admin-results ul {
    margin: 0;
    padding-left: 1.2rem;
}

.admin-modal {
    border: none;
    background: transparent;
    padding: 1rem;
    width: min(720px, calc(100vw - 2rem));
}

.admin-modal::backdrop {
    background: rgba(2, 6, 10, 0.7);
}

.admin-modal-card {
    padding: 1.4rem;
}

.admin-fieldset {
    border: 1px solid var(--border);
    padding: 1rem;
    margin: 1rem 0 0;
}

.admin-checkbox-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.admin-checkbox-grid label {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--text);
}

.admin-checkbox-grid input {
    width: auto;
    margin: 0;
}

ul {
    margin: 0;
    padding-left: 1.2rem;
}

@media (max-width: 980px) {
    .admin-meta-grid,
    .admin-health-grid,
    .admin-grid,
    .admin-grid--triple,
    .content-layout,
    .content-form-grid,
    .admin-form-grid,
    .admin-checkbox-grid {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 760px) {
    .admin-shell {
        padding-inline: 0.9rem;
    }

    .admin-header,
    .admin-token-row,
    .admin-section-header,
    .admin-health-header,
    .content-card-header,
    .admin-modal-header,
    .admin-modal-actions {
        display: grid;
    }
}