/**
 * Admin Content Form Component
 * 
 * Modern content form with split-screen layout option, collapsible sections,
 * auto-save indicator, and sticky form actions bar.
 * Uses BEM naming convention and design system tokens.
 */

.admin-content-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg, 1.5rem);
    padding: var(--space-lg, 1.5rem);
    background: var(--bg, oklch(100% 0 0));
    min-height: 100vh;
    position: relative;
}

/* Alerts */
.admin-content-form__alert {
    padding: var(--space-md, 1rem);
    border-radius: 8px;
    margin-bottom: var(--space-md, 1rem);
    border-left: 4px solid;
    transition: all 0.2s ease;
}

.admin-content-form__alert--error {
    background: oklch(95% 0.05 25 / 0.1);
    border-left-color: var(--accent-error, oklch(60% 0.25 25));
    color: var(--accent-error, oklch(60% 0.25 25));
}

.admin-content-form__alert--info {
    background: oklch(95% 0.05 240 / 0.1);
    border-left-color: var(--accent-info, oklch(58% 0.22 240));
    color: var(--accent-info, oklch(58% 0.22 240));
}

.admin-content-form__alert--success {
    background: oklch(95% 0.05 145 / 0.1);
    border-left-color: var(--accent-success, oklch(58% 0.22 145));
    color: var(--accent-success, oklch(58% 0.22 145));
}

.admin-content-form__error-list {
    margin: var(--space-sm, 0.75rem) 0 0 var(--space-lg, 1.5rem);
    padding: 0;
    list-style: disc;
}

.admin-content-form__error-item {
    margin-bottom: var(--space-xs, 0.5rem);
}

/* Auto-Save Indicator */
.admin-content-form__auto-save {
    display: flex;
    align-items: center;
    gap: var(--space-xs, 0.5rem);
    padding: var(--space-sm, 0.75rem) var(--space-md, 1rem);
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--muted, oklch(50% 0.01 280));
    position: fixed;
    top: var(--space-md, 1rem);
    right: var(--space-md, 1rem);
    z-index: 100;
    box-shadow: 0 2px 8px oklch(0% 0 0 / 0.1);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
}

.admin-content-form__auto-save--visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.admin-content-form__auto-save-icon {
    width: 16px;
    height: 16px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.admin-content-form__auto-save-text {
    font-weight: 500;
}

/* Form Sections Container */
.admin-content-form__sections {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg, 1.5rem);
}

/* Split-Screen Layout */
.admin-content-form--split-screen {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg, 1.5rem);
    align-items: start;
}

.admin-content-form--split-screen .admin-content-form__sections {
    grid-column: 1;
}

.admin-content-form__preview-panel {
    grid-column: 2;
    position: sticky;
    top: var(--space-lg, 1.5rem);
    max-height: calc(100vh - var(--space-lg, 1.5rem) * 2);
    overflow-y: auto;
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
    border-radius: 8px;
    padding: var(--space-md, 1rem);
}

/* Form Section */
.admin-content-form__section {
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border-radius: 8px;
    padding: var(--space-lg, 1.5rem);
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
    transition: all 0.2s ease;
}

.admin-content-form__section--collapsed {
    padding: var(--space-md, 1rem);
}

.admin-content-form__section--collapsed .admin-content-form__section-content {
    display: none;
}

.admin-content-form__section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md, 1rem);
    padding-bottom: var(--space-sm, 0.75rem);
    border-bottom: 2px solid var(--border-light, oklch(75% 0.02 280));
    cursor: pointer;
    user-select: none;
}

.admin-content-form__section-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text, oklch(20% 0.02 280));
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--space-xs, 0.5rem);
}

.admin-content-form__section-toggle {
    background: none;
    border: none;
    color: var(--muted, oklch(50% 0.01 280));
    cursor: pointer;
    padding: var(--space-xs, 0.5rem);
    border-radius: 4px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.admin-content-form__section-toggle:hover {
    background: var(--bg, oklch(100% 0 0));
    color: var(--text, oklch(20% 0.02 280));
}

.admin-content-form__section-toggle-icon {
    width: 20px;
    height: 20px;
    transition: transform 0.2s ease;
}

.admin-content-form__section--collapsed .admin-content-form__section-toggle-icon {
    transform: rotate(-90deg);
}

.admin-content-form__section-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-md, 1rem);
}

/* Form Grid */
.admin-content-form__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md, 1rem);
}

/* Form Field */
.admin-content-form__field {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs, 0.5rem);
}

.admin-content-form__field--full {
    grid-column: 1 / -1;
}

.admin-content-form__label {
    display: flex;
    align-items: center;
    gap: var(--space-xs, 0.5rem);
    font-weight: 500;
    color: var(--text, oklch(20% 0.02 280));
    font-size: 0.875rem;
}

.admin-content-form__required {
    color: var(--accent-error, oklch(60% 0.25 25));
}

.admin-content-form__badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.admin-content-form__badge--info {
    background: oklch(95% 0.05 240 / 0.2);
    color: var(--accent-info, oklch(58% 0.22 240));
}

.admin-content-form__badge--success {
    background: oklch(95% 0.05 145 / 0.2);
    color: var(--accent-success, oklch(58% 0.22 145));
}

.admin-content-form__input-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs, 0.5rem);
}

.admin-content-form__help {
    color: var(--muted, oklch(50% 0.01 280));
    font-size: 0.75rem;
}

.admin-content-form__error {
    color: var(--accent-error, oklch(60% 0.25 25));
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: var(--space-xs, 0.5rem);
}

/* Form Actions - Sticky */
.admin-content-form__actions {
    display: flex;
    gap: var(--space-md, 1rem);
    padding: var(--space-md, 1rem);
    background: var(--bg, oklch(100% 0 0));
    border-top: 1px solid var(--border-light, oklch(75% 0.02 280));
    position: sticky;
    bottom: 0;
    z-index: 10;
    box-shadow: 0 -2px 8px oklch(0% 0 0 / 0.05);
    margin-top: auto;
}

.admin-content-form__actions-button {
    padding: var(--space-sm, 0.75rem) var(--space-lg, 1.5rem);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: var(--space-xs, 0.5rem);
}

.admin-content-form__actions-button--primary {
    background: var(--accent-primary, oklch(60% 0.2 280));
    color: var(--bg, oklch(100% 0 0));
}

.admin-content-form__actions-button--primary:hover {
    background: oklch(55% 0.2 280);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px oklch(60% 0.2 280 / 0.3);
}

.admin-content-form__actions-button--secondary {
    background: var(--bg-secondary, oklch(95% 0.01 280));
    color: var(--text, oklch(20% 0.02 280));
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
}

.admin-content-form__actions-button--secondary:hover {
    background: var(--bg-tertiary, oklch(92% 0.01 280));
}

/* Keyboard Shortcuts Help */
.admin-content-form__shortcuts {
    position: fixed;
    bottom: var(--space-lg, 1.5rem);
    right: var(--space-lg, 1.5rem);
    z-index: 1000;
}

.admin-content-form__shortcuts-button {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent-primary, oklch(60% 0.2 280));
    color: var(--bg, oklch(100% 0 0));
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 12px oklch(0% 0 0 / 0.2);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.admin-content-form__shortcuts-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px oklch(0% 0 0 / 0.3);
}

.admin-content-form__shortcuts-modal {
    position: fixed;
    inset: 0;
    background: oklch(0% 0 0 / 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.admin-content-form__shortcuts-modal--visible {
    opacity: 1;
    pointer-events: auto;
}

.admin-content-form__shortcuts-content {
    background: var(--bg, oklch(100% 0 0));
    border-radius: 12px;
    padding: var(--space-xl, 2rem);
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 8px 32px oklch(0% 0 0 / 0.3);
}

.admin-content-form__shortcuts-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 var(--space-lg, 1.5rem) 0;
    color: var(--text, oklch(20% 0.02 280));
}

.admin-content-form__shortcuts-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md, 1rem);
    list-style: none;
    padding: 0;
    margin: 0;
}

.admin-content-form__shortcuts-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm, 0.75rem);
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border-radius: 6px;
}

.admin-content-form__shortcuts-key {
    font-family: monospace;
    padding: 0.25rem 0.5rem;
    background: var(--bg, oklch(100% 0 0));
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--text, oklch(20% 0.02 280));
}

/* Responsive Design */
@media (max-width: 1024px) {
    .admin-content-form--split-screen {
        grid-template-columns: 1fr;
    }

    .admin-content-form__preview-panel {
        position: static;
        max-height: none;
    }
}

@media (max-width: 768px) {
    .admin-content-form {
        padding: var(--space-md, 1rem);
    }

    .admin-content-form__actions {
        flex-direction: column;
    }

    .admin-content-form__actions-button {
        width: 100%;
        justify-content: center;
    }

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

    .admin-content-form__shortcuts {
        bottom: var(--space-md, 1rem);
        right: var(--space-md, 1rem);
    }
}