.theme-dark {
    --app-bg: #111111;
    --app-surface: #1f1f1f;
    --app-text: #f3f2f1;
    --app-text-secondary: #c8c6c4;
    --app-border: #3d3d3d;
    --app-primary: #0078d4;
    --app-header-bg: #0078d4;
    --app-header-text: #ffffff;
    --ribbon-bg: #2b3035;
    --ribbon-panel-bg: #343a40;
    --ribbon-text: #f3f2f1;
    --ribbon-tab-text: #f3f2f1;
    --ribbon-group-label: #f3f2f1;
    --ribbon-group-bar-bg: #252526;
    --ribbon-hover: rgba(255, 255, 255, 0.08);
    --ribbon-pressed: rgba(255, 255, 255, 0.14);
}

.theme-light {
    --app-bg: #fafafa;
    --app-surface: #ffffff;
    --app-text: #212529;
    --app-text-secondary: #6c757d;
    --app-border: #dee2e6;
    --app-primary: #1976d2;
    --app-header-bg: #1976d2;
    --app-header-text: #ffffff;
    --ribbon-bg: #f3f4f6;
    --ribbon-panel-bg: #ffffff;
    --ribbon-text: #212529;
    --ribbon-tab-text: #212529;
    --ribbon-group-label: #495057;
    --ribbon-group-bar-bg: #ececec;
    --ribbon-hover: rgba(0, 0, 0, 0.06);
    --ribbon-pressed: rgba(0, 0, 0, 0.12);
}

.app-shell {
    min-height: 100vh;
    background: var(--app-bg);
    color: var(--app-text);
}

.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1100;
    height: 64px;
    display: flex;
    align-items: center;
    padding: 0 16px;
    background: var(--app-header-bg);
    color: var(--app-header-text);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.app-header-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.app-header-spacer {
    flex: 1;
}

.app-header-user {
    text-align: right;
    margin-right: 8px;
    line-height: 1.2;
}

.app-header-user-name {
    font-size: 0.875rem;
}

.app-header-user-company {
    font-size: 0.75rem;
    opacity: 0.9;
}

.app-main {
    padding-top: 64px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.layout-page-body {
    flex: 1;
    padding: 16px;
    background: var(--app-bg);
    color: var(--app-text);
}

.page-panel {
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: 8px;
    padding: 16px;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}

.page-header h5 {
    margin: 0;
    color: var(--app-text);
}

.form-field {
    margin-bottom: 12px;
}

.form-field label {
    display: block;
    margin-bottom: 4px;
    font-size: 0.875rem;
    color: var(--app-text-secondary);
}

.form-errors {
    background: rgba(209, 52, 56, 0.12);
    border: 1px solid #d13438;
    border-radius: 6px;
    padding: 10px 12px;
    margin-bottom: 12px;
    color: var(--app-text);
}

.form-errors ul {
    margin: 0;
    padding-left: 18px;
}

.dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 16px;
}

.form-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 16px;
}

.form-check-row {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 8px;
}

.line-dialog-scroll {
    max-height: 62vh;
    overflow-y: auto;
    padding-right: 4px;
}

@media (max-width: 720px) {
    .form-grid-2 {
        grid-template-columns: 1fr;
    }
}

.form-section {
    border-radius: 8px;
    background-color: var(--app-surface);
    border: 1px solid var(--app-border);
    margin-bottom: 12px;
}

.form-section-primary {
    border-left: 4px solid var(--app-primary);
}

.form-section-success {
    border-left: 4px solid #107c10;
}

.form-section-warning {
    border-left: 4px solid #ffb900;
}

.form-section-error {
    border-left: 4px solid #d13438;
}

.form-section-title {
    margin: 0 0 12px;
    font-weight: 600;
    color: var(--app-text);
}