/* ================================================================
 * DATEI: css/searchable-dropdown.css
 * ZWECK: Styling fuer die Searchable-Dropdown-Komponente
 * DESIGN: Refined Brass Studio -- warm charcoal + brass/gold accents
 * REFERENZIERT: css/variables.css (CSS Custom Properties)
 * REFERENZIERT VON: index.html, js/components/searchable-dropdown.js
 * ================================================================ */

/* ========== WRAPPER ========== */
.searchable-dropdown {
    position: relative;
    width: 100%;
}

/* ========== TRIGGER / DISPLAY ========== */
.sd-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-3);
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal),
                background var(--transition-normal);
    min-height: 40px;
    gap: var(--space-2);
}

.sd-trigger:hover {
    border-color: var(--border-strong);
    background: var(--bg-hover);
}

.searchable-dropdown.open .sd-trigger {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px var(--accent-primary-transparent);
}

.sd-trigger-text,
.sd-selected-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-primary);
    font-size: var(--font-sm);
    font-weight: 500;
}

.sd-trigger-text.placeholder,
.sd-placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.sd-trigger-icon {
    margin-left: var(--space-1);
    color: var(--text-muted);
    font-size: 0.625rem;
    transition: transform var(--transition-normal);
    flex-shrink: 0;
}

.searchable-dropdown.open .sd-trigger-icon {
    transform: rotate(180deg);
    color: var(--accent-primary);
}

/* ========== DROPDOWN PANEL ========== */
.sd-panel,
.sd-dropdown {
    position: absolute;
    top: calc(100% + var(--space-1));
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity var(--transition-normal), transform var(--transition-normal),
                visibility var(--transition-normal);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    max-height: 300px;
    display: flex;
    flex-direction: column;
}

.searchable-dropdown.open .sd-panel,
.searchable-dropdown.open .sd-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* ========== SEARCH INPUT ========== */
.sd-search-wrapper {
    position: relative;
    padding: var(--space-2);
    border-bottom: 1px solid var(--border-subtle);
    flex-shrink: 0;
}

.sd-search-icon {
    position: absolute;
    left: calc(var(--space-2) + 10px);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: var(--font-xs);
    pointer-events: none;
}

.sd-search {
    width: 100%;
    padding: var(--space-2) var(--space-3) var(--space-2) 34px;
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-sm);
    outline: none;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.sd-search:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px var(--accent-primary-transparent);
}

.sd-search::placeholder {
    color: var(--text-muted);
}

/* ========== OPTIONS LIST ========== */
.sd-list-wrapper,
.sd-options {
    overflow-y: auto;
    overflow-x: hidden;
    flex: 1;
    scrollbar-width: thin;
    scrollbar-color: var(--border-default) transparent;
}

.sd-list-wrapper::-webkit-scrollbar,
.sd-options::-webkit-scrollbar {
    width: 5px;
}

.sd-list-wrapper::-webkit-scrollbar-track,
.sd-options::-webkit-scrollbar-track {
    background: transparent;
}

.sd-list-wrapper::-webkit-scrollbar-thumb,
.sd-options::-webkit-scrollbar-thumb {
    background: var(--border-default);
    border-radius: var(--radius-pill);
}

.sd-list-wrapper::-webkit-scrollbar-thumb:hover,
.sd-options::-webkit-scrollbar-thumb:hover {
    background: var(--border-strong);
}

.sd-list {
    list-style: none;
    margin: 0;
    padding: var(--space-1) 0;
}

/* ========== OPTION ITEMS ========== */
.sd-item,
.sd-option {
    display: flex;
    align-items: center;
    padding: var(--space-2) var(--space-3);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
    color: var(--text-primary);
    font-size: var(--font-sm);
    gap: var(--space-2);
    min-height: 36px;
}

.sd-item:hover,
.sd-item.highlighted,
.sd-option:hover {
    background: var(--bg-hover);
}

.sd-item.selected,
.sd-option.selected {
    background: var(--accent-primary-transparent);
    color: var(--accent-primary);
    font-weight: 600;
}

.sd-item.selected::after {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-left: auto;
    font-size: 0.6875rem;
    color: var(--accent-primary);
}

.sd-item.disabled,
.sd-option.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.sd-item.hidden,
.sd-option.hidden {
    display: none;
}

.sd-item-empty {
    color: var(--text-muted);
    font-style: italic;
    padding: var(--space-2) var(--space-3);
}

/* Indentation for hierarchy */
.sd-item.indent-1 { padding-left: 28px; }
.sd-item.indent-2 { padding-left: 44px; }
.sd-item.indent-3 { padding-left: 60px; }
.sd-item.indent-4 { padding-left: 76px; }

/* ========== ITEM ICONS ========== */
.sd-item-icon {
    margin-right: var(--space-1);
    width: 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: var(--font-sm);
    flex-shrink: 0;
    transition: color var(--transition-fast);
}

.sd-item.selected .sd-item-icon {
    color: var(--accent-primary);
}

/* ========== ITEM BADGE ========== */
.sd-item-badge {
    margin-left: auto;
    padding: 2px 8px;
    background: var(--bg-inset);
    border-radius: var(--radius-pill);
    font-size: 0.6875rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ========== GROUP HEADERS ========== */
.sd-group-header {
    padding: var(--space-2) var(--space-3) var(--space-1);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    background: var(--bg-inset);
    border-top: 1px solid var(--border-subtle);
    margin-top: var(--space-1);
}

.sd-group-header:first-child {
    margin-top: 0;
    border-top: none;
}

.sd-group-header.hidden {
    display: none;
}

/* ========== NO RESULTS ========== */
.sd-no-results {
    padding: var(--space-6) var(--space-4);
    text-align: center;
    color: var(--text-muted);
    font-style: italic;
    font-size: var(--font-sm);
}

.sd-no-results.hidden {
    display: none;
}

/* ========== SMALL VARIANT ========== */
.searchable-dropdown.sd-small .sd-trigger {
    padding: var(--space-1) var(--space-2);
    min-height: 32px;
    font-size: var(--font-xs);
}

.searchable-dropdown.sd-small .sd-search {
    padding: var(--space-1) var(--space-2) var(--space-1) 28px;
    font-size: var(--font-xs);
}

.searchable-dropdown.sd-small .sd-item,
.searchable-dropdown.sd-small .sd-option {
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-xs);
    min-height: 30px;
}

/* ========== FORM GROUP INTEGRATION ========== */
.form-group .searchable-dropdown {
    margin-top: 0;
}

/* ========== DISABLED STATE ========== */
.searchable-dropdown.disabled .sd-trigger {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
    background: var(--bg-inset);
}