:root {
    --bg: #f6f7f9;
    --panel: #ffffff;
    --text: #172033;
    --muted: #667085;
    --line: #d9dee8;
    --primary: #1769e0;
    --primary-dark: #1255b4;
    --danger: #c43a31;
    --danger-dark: #9f2f28;
    --success-bg: #e9f8ef;
    --success-text: #17633a;
    --error-bg: #fff0ef;
    --error-text: #9d2d26;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--text);
    background: var(--bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
    color: inherit;
}

.app-shell {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

.sidebar {
    position: sticky;
    top: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100vh;
    padding: 24px;
    border-right: 1px solid var(--line);
    background: var(--panel);
}

.sidebar h2,
.section h2 {
    margin: 0 0 16px;
    font-size: 18px;
}

.user-name {
    margin: 0 0 16px;
    color: var(--muted);
}

.sidebar-nav {
    display: grid;
    gap: 4px;
    margin-top: 18px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 40px;
    padding: 9px 10px;
    border-radius: 6px;
    color: var(--muted);
    font: inherit;
    font-weight: 600;
    text-decoration: none;
}

.nav-link i {
    width: 18px;
    color: #8a94a6;
    text-align: center;
}

.nav-link:hover {
    color: var(--text);
    background: #f0f3f8;
}

.nav-link.is-active {
    color: var(--primary);
    background: #eaf2ff;
}

.nav-link.is-active i {
    color: var(--primary);
}

.sidebar-action {
    margin: 14px 0 0;
    padding-top: 14px;
    border-top: 1px solid var(--line);
}

.nav-button {
    width: 100%;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.version,
.subtle {
    color: var(--muted);
    font-size: 13px;
}

.main-content {
    padding: 28px 32px 48px;
}

.page-header {
    margin-bottom: 20px;
    border-bottom: 1px solid var(--line);
}

.schedule-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
}

.page-header h1 {
    margin: 0 0 8px;
    font-size: 30px;
}

.page-header p {
    margin: 0 0 18px;
    color: var(--muted);
}

.section {
    margin-top: 24px;
}

.card,
.login-card,
.info-box {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
}

.card {
    padding: 18px;
}

.card h3 {
    margin: 0 0 12px;
    font-size: 20px;
}

.card p {
    color: var(--muted);
    line-height: 1.6;
    white-space: pre-line;
}

.element-check-form {
    margin-top: 8px;
}

.element-check-form input {
    width: 100%;
    min-height: 40px;
    margin-bottom: 8px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    font: inherit;
}

.element-check-form textarea {
    width: 100%;
    min-height: 88px;
    margin-bottom: 8px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    font: inherit;
    resize: vertical;
}

.account-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

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

.button-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.button-row form {
    margin: 0;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 40px;
    padding: 8px 14px;
    border: 1px solid transparent;
    border-radius: 6px;
    font: inherit;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
}

.button:disabled {
    cursor: wait;
    opacity: 0.78;
}

.button.is-loading::before {
    width: 14px;
    height: 14px;
    margin-right: 8px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    content: "";
    animation: spin 0.75s linear infinite;
}

.inline-button {
    width: auto;
}

.button-primary {
    color: #ffffff;
    background: var(--primary);
}

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

.button-danger {
    color: #ffffff;
    background: var(--danger);
}

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

.button-secondary {
    margin-top: 10px;
    color: var(--text);
    border-color: var(--line);
    background: #ffffff;
}

.button-secondary:hover {
    background: #f0f3f8;
}

.icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--line);
    border-radius: 6px;
    color: var(--muted);
    background: #ffffff;
    cursor: pointer;
}

.icon-button:hover {
    color: var(--danger);
    background: #fff8f7;
}

.icon-button:disabled {
    cursor: not-allowed;
    opacity: 0.4;
}

.icon-button:disabled:hover {
    color: var(--muted);
    background: #ffffff;
}

.info-box {
    margin-top: 12px;
    padding: 12px;
}

.info-box span {
    display: block;
    color: var(--muted);
    font-size: 13px;
}

.info-box strong {
    display: block;
    margin-top: 4px;
    font-size: 14px;
}

.alert {
    margin: 0 0 16px;
    padding: 12px 14px;
    border-radius: 8px;
    font-weight: 600;
}

.alert-success {
    color: var(--success-text);
    background: var(--success-bg);
}

.alert-error {
    color: var(--error-text);
    background: var(--error-bg);
}

.tabs {
    display: grid;
    grid-template-columns: max-content max-content 1fr;
    gap: 0 8px;
}

.tabs input {
    position: absolute;
    opacity: 0;
}

.tabs label {
    padding: 10px 14px;
    border: 1px solid var(--line);
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    background: #edf1f6;
    cursor: pointer;
}

.tab-panel {
    display: none;
    grid-column: 1 / -1;
    padding: 16px 20px;
    border: 1px solid var(--line);
    border-radius: 0 8px 8px 8px;
    background: var(--panel);
}

.tab-panel ol {
    margin: 0;
    padding-left: 22px;
    color: var(--muted);
    line-height: 1.8;
}

#startup-tab:checked ~ label[for="startup-tab"],
#shutdown-tab:checked ~ label[for="shutdown-tab"] {
    background: var(--panel);
}

#startup-tab:checked ~ .startup-panel,
#shutdown-tab:checked ~ .shutdown-panel {
    display: block;
}

.login-page {
    display: grid;
    min-height: 100vh;
    place-items: center;
    padding: 24px;
}

.login-panel {
    width: min(420px, 100%);
}

.login-panel h1 {
    margin: 0 0 18px;
    text-align: center;
}

.login-card {
    padding: 22px;
}

.login-card h2 {
    margin: 0 0 18px;
}

.login-card label {
    display: block;
    margin-bottom: 14px;
}

.login-card span {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 14px;
}

.login-card input {
    width: 100%;
    min-height: 42px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    font: inherit;
}

.date-filter {
    min-width: 300px;
    margin-bottom: 18px;
}

.date-filter label {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 14px;
    font-weight: 600;
}

.date-filter div {
    display: grid;
    grid-template-columns: 1fr 96px;
    gap: 8px;
}

.date-filter input {
    min-height: 40px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    font: inherit;
}

.template-form {
    display: grid;
    gap: 16px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
}

.template-form-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.template-form-heading h2 {
    margin: 0;
}

.template-form label span {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

.template-form input,
.template-form select,
.template-form textarea {
    width: 100%;
    min-height: 40px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    font: inherit;
}

.template-form textarea {
    min-height: 88px;
    resize: vertical;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 120px;
    gap: 12px;
    align-items: end;
}

.schedule-create-grid {
    display: grid;
    grid-template-columns: minmax(220px, 1fr) minmax(220px, 1fr) 160px;
    gap: 12px;
    align-items: end;
}

.observation-form-grid {
    display: grid;
    grid-template-columns: 180px minmax(240px, 1fr) 120px;
    gap: 12px;
    align-items: end;
}

.toggle-row,
.row-check {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toggle-row {
    min-height: 40px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
}

.toggle-row input,
.row-check input {
    width: auto;
    min-height: 0;
}

.toggle-row span,
.row-check span {
    margin: 0;
    color: var(--text);
}

.session-template-editor {
    display: grid;
    gap: 10px;
}

.session-template-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.session-template-heading h2 {
    margin: 0;
}

.add-session-button {
    margin-top: 0;
}

.session-template-table {
    display: grid;
    gap: 8px;
}

.session-template-row {
    display: grid;
    grid-template-columns: 96px minmax(160px, 0.7fr) minmax(220px, 1fr) 72px 40px;
    gap: 8px;
    align-items: center;
}

.session-template-head {
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.template-list {
    display: grid;
    gap: 14px;
}

.template-accordion {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
}

.template-accordion summary {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 18px;
    cursor: pointer;
    list-style: none;
}

.template-accordion summary::-webkit-details-marker {
    display: none;
}

.template-accordion summary h2 {
    margin: 0 0 6px;
    font-size: 20px;
}

.template-accordion summary p {
    margin: 0;
    color: var(--muted);
}

.template-summary-side {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.template-summary-side i {
    color: var(--muted);
    transition: transform 0.15s ease;
}

.template-accordion[open] .template-summary-side i {
    transform: rotate(180deg);
}

.template-accordion-body {
    padding: 0 18px 16px;
}

.template-accordion-body .compact-session-list {
    margin-top: 0;
}

.template-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 12px;
}

.compact-session-list {
    display: grid;
    gap: 8px;
    margin: 16px 0 0;
    padding: 0;
    list-style: none;
}

.compact-session-list li {
    display: grid;
    grid-template-columns: 72px minmax(180px, 0.6fr) 1fr;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fbfcfe;
}

.compact-session-list span {
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
}

.compact-session-list strong {
    font-size: 14px;
}

.compact-session-list p {
    margin: 0;
}

.timeline {
    position: relative;
    margin: 0;
    padding: 0;
    list-style: none;
}

.timeline-item {
    position: relative;
    margin-bottom: 18px;
}

.timeline-content {
    padding: 16px 18px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
}

.timeline-content h2 {
    margin: 0 0 6px;
    font-size: 20px;
}

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

.schedule-title-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.schedule-meta {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin: 16px 0 0;
}

.schedule-meta div {
    padding-top: 10px;
    border-top: 1px solid var(--line);
}

.schedule-meta dt {
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
}

.schedule-meta dd {
    margin: 4px 0 0;
    font-weight: 600;
}

.session-list {
    display: grid;
    gap: 10px;
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.session-item {
    display: grid;
    grid-template-columns: 112px 1fr;
    gap: 12px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fbfcfe;
}

.session-time-stack {
    display: grid;
    gap: 8px;
}

.session-time-stack time {
    display: grid;
    gap: 2px;
    min-height: 42px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
}

.session-time-stack time.is-empty {
    color: var(--muted);
}

.session-time-stack time.execution-time:not(.is-empty) {
    color: var(--success-text);
}

.session-time-stack span {
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
}

.session-body h3 {
    margin: 0 0 6px;
    font-size: 16px;
}

.session-body {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.session-main {
    min-width: 0;
}

.session-side {
    display: grid;
    justify-items: end;
    gap: 8px;
    width: 150px;
    flex: 0 0 150px;
}

.session-body p {
    line-height: 1.5;
}

.session-actions {
    min-height: 40px;
}

.session-actions form {
    margin: 0;
}

.session-empty {
    margin-top: 18px !important;
}

.empty-state {
    padding: 32px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
    text-align: center;
}

.empty-state h2 {
    margin: 0 0 8px;
    font-size: 20px;
}

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

.table-shell {
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 760px;
}

.data-table th,
.data-table td {
    padding: 13px 14px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: middle;
}

.data-table th {
    color: var(--muted);
    background: #f0f3f8;
    font-size: 13px;
    font-weight: 700;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table td:nth-child(3) {
    color: var(--muted);
    line-height: 1.5;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    min-height: 28px;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 700;
}

.status-active {
    color: var(--success-text);
    background: var(--success-bg);
}

.status-inactive {
    color: var(--muted);
    background: #eef1f5;
}

.status-scheduled {
    color: var(--primary);
    background: #eaf2ff;
}

.status-done {
    color: var(--success-text);
    background: var(--success-bg);
}

.status-canceled {
    color: var(--error-text);
    background: var(--error-bg);
}

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-top: 18px;
    color: var(--muted);
    font-size: 14px;
}

.pagination-placeholder {
    min-width: 58px;
    color: #a0a8b5;
    text-align: center;
}

@media (max-width: 900px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
        height: auto;
    }

    .account-grid,
    .two-column,
    .schedule-meta,
    .form-grid,
    .schedule-create-grid,
    .observation-form-grid,
    .session-template-row,
    .compact-session-list li,
    .session-item {
        grid-template-columns: 1fr;
    }

    .session-body {
        display: block;
    }

    .session-side {
        justify-items: start;
        width: auto;
        margin-top: 12px;
    }

    .schedule-header {
        display: block;
    }

    .date-filter {
        min-width: 0;
    }

    .pagination {
        flex-wrap: wrap;
    }
}

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