:root {
    --ui-bg: #e9edf3;
    --ui-surface: #f7f9fc;
    --ui-surface-strong: #eef2f7;
    --ui-border: #c6d0db;
    --ui-border-strong: #9aa9b8;
    --ui-text: #18212b;
    --ui-muted: #5e6b78;
    --ui-primary: #2563eb;
    --ui-primary-dark: #1d4ed8;
    --ui-danger: #c2410c;
    --ui-danger-dark: #9a3412;
    --ui-success: #1f7a42;
    --ui-radius-sm: 4px;
    --ui-radius-md: 6px;
    --ui-shadow: 0 8px 18px rgba(24, 33, 43, 0.06);
    --ui-modal-shadow: 0 18px 40px rgba(24, 33, 43, 0.2);
    --ui-toast-shadow: 0 10px 30px rgba(15, 23, 42, 0.24);
    --editor-bg: var(--ui-bg);
    --editor-surface: var(--ui-surface);
    --editor-surface-strong: var(--ui-surface-strong);
    --editor-border: var(--ui-border);
    --editor-border-strong: var(--ui-border-strong);
    --editor-text: var(--ui-text);
    --editor-muted: var(--ui-muted);
    --editor-primary: var(--ui-primary);
    --editor-primary-dark: var(--ui-primary-dark);
    --editor-danger: var(--ui-danger);
    --editor-danger-dark: var(--ui-danger-dark);
    --editor-radius-sm: var(--ui-radius-sm);
    --editor-radius-md: var(--ui-radius-md);
    --editor-shadow: var(--ui-shadow);
    --admin-bg: var(--ui-bg);
    --admin-surface: var(--ui-surface);
    --admin-surface-strong: var(--ui-surface-strong);
    --admin-border: var(--ui-border);
    --admin-border-strong: var(--ui-border-strong);
    --admin-text: var(--ui-text);
    --admin-muted: var(--ui-muted);
    --admin-primary: var(--ui-primary);
    --admin-primary-dark: var(--ui-primary-dark);
    --admin-danger: #b93815;
    --admin-success: var(--ui-success);
    --admin-radius-sm: var(--ui-radius-sm);
    --admin-radius-md: var(--ui-radius-md);
    --admin-shadow: var(--ui-shadow);
}

* {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

button,
input,
select,
textarea {
    font: inherit;
}

.eyebrow {
    margin: 0;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.topbar-home-link {
    text-decoration: none;
}

.topbar-home-link:hover,
.topbar-home-link:focus-visible {
    text-decoration: underline;
}

.app-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    min-height: 70px;
    padding: 14px 24px;
    border-bottom: 1px solid rgba(154, 169, 184, 0.2);
    background: linear-gradient(180deg, #f8fafc 0%, #f2f5f9 100%);
}

.app-topbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    color: var(--ui-primary-dark);
}

.app-topbar .eyebrow {
    margin: 0;
}

.app-topbar-home {
    color: inherit;
    text-decoration: none;
}

.app-topbar-home:hover,
.app-topbar-home:focus-visible {
    text-decoration: underline;
}

.app-topbar-separator,
.app-topbar-context {
    color: inherit;
}

.app-topbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.editor-section,
.admin-panel {
    background: var(--ui-surface);
    border: 1px solid var(--ui-border);
    border-radius: var(--ui-radius-md);
    box-shadow: var(--ui-shadow);
}

.field input,
.field select,
.block-card textarea,
.block-card input,
.admin-form input,
.admin-filter-field input,
.admin-filter-field select {
    width: 100%;
    padding: 10px 12px;
    color: var(--ui-text);
    background-color: #fff;
    border: 1px solid var(--ui-border-strong);
    border-radius: var(--ui-radius-sm);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.65);
}

.field select,
.admin-filter-field select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    padding-right: 36px;
    background-image:
        linear-gradient(45deg, transparent 50%, var(--ui-muted) 50%),
        linear-gradient(135deg, var(--ui-muted) 50%, transparent 50%);
    background-position:
        calc(100% - 18px) calc(50% - 2px),
        calc(100% - 12px) calc(50% - 2px);
    background-size: 6px 6px, 6px 6px;
    background-repeat: no-repeat;
}

.field input:focus,
.field select:focus,
.block-card textarea:focus,
.block-card input:focus,
.admin-form input:focus,
.admin-filter-field input:focus,
.admin-filter-field select:focus {
    border-color: var(--ui-primary);
}

.toolbar button,
.primary-action,
.block-actions button,
.secondary-button,
.admin-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 7px 10px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--ui-radius-sm);
    cursor: pointer;
}

.toolbar button,
.primary-action,
.block-actions button,
.admin-button-primary,
.admin-button-success,
.admin-button-danger {
    color: #fff;
    border: 1px solid rgba(0, 0, 0, 0.08);
}

.toolbar button,
.primary-action,
.block-actions button,
.admin-button-primary {
    background: linear-gradient(180deg, var(--ui-primary) 0%, var(--ui-primary-dark) 100%);
}

.secondary-button,
.admin-button-secondary {
    color: var(--ui-text);
    background: #fff;
    border: 1px solid var(--ui-border-strong);
}

.secondary-button:hover,
.admin-button-secondary:hover {
    background-color: #f3f6fa;
}

.block-actions .danger,
.admin-button-danger {
    background: linear-gradient(180deg, var(--ui-danger) 0%, var(--ui-danger-dark) 100%);
}

.admin-button-success {
    background: linear-gradient(180deg, #1f9d55 0%, #157347 100%);
}

.modal-shell,
.admin-modal-shell {
    position: fixed;
    inset: 0;
}

.modal-backdrop,
.admin-modal-backdrop {
    position: absolute;
    inset: 0;
    background-color: rgba(24, 33, 43, 0.45);
}

.modal-panel,
.admin-modal-panel {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 20px;
    background-color: var(--ui-surface);
    border: 1px solid var(--ui-border-strong);
    border-radius: var(--ui-radius-md);
    box-shadow: var(--ui-modal-shadow);
}

.modal-header,
.admin-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: 12px;
}

.modal-body,
.admin-modal-body {
    gap: 14px;
}

.modal-footer,
.admin-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.validation-message,
.admin-toast {
    position: fixed;
    left: 50%;
    bottom: 20px;
    padding: 10px 14px;
    margin: 0;
    font-size: 13px;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--ui-radius-md);
    box-shadow: var(--ui-toast-shadow);
    transform: translate(-50%, 16px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease;
}

.validation-message.is-success,
.admin-toast.is-success {
    background: rgba(21, 115, 71, 0.96);
}

.validation-message.is-error,
.admin-toast.is-error {
    background: rgba(127, 29, 29, 0.96);
}

.validation-message.is-visible,
.admin-toast.is-visible {
    opacity: 1;
    transform: translate(-50%, 0);
}

@media (max-width: 720px) {
    .app-topbar {
        min-height: 66px;
        padding: 12px 16px;
    }
}