/**
 * ==========================================================================
 * STYLES.CSS - Haupt-Stylesheet
 * ==========================================================================
 * 
 * STRUKTUR:
 * 1. Reset & Base
 * 2. Layout (Sidebar, Main)
 * 3. Komponenten (Buttons, Cards, Forms)
 * 4. Tabs
 * 5. Modal
 * 6. Toast
 * 7. Utilities
 */

/* ==========================================================================
 * 1. RESET & BASE
 * ========================================================================== */

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background: var(--bg-secondary);
}

a {
    color: var(--primary);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
}

/* ==========================================================================
 * 2. LAYOUT
 * ========================================================================== */

/* ----- App Container ----- */
#app {
    display: flex;
    min-height: 100vh;
}

/* Logo: Icon wenn collapsed, volles Logo wenn expanded */
.sidebar.collapsed .logo-full { display: none !important; }
/*.sidebar.collapsed .logo-icon { display: block !important; }*/
.sidebar.collapsed .logo-icon {
    display: block !important;
    width: 28px !important;
    min-width: 28px !important;
}
.sidebar:not(.collapsed) .logo-full { display: block !important; }
.sidebar:not(.collapsed) .logo-icon { display: none !important; }

/* ----- Sidebar ----- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    color: var(--text-inverse);
    display: flex;
    flex-direction: column;
    z-index: var(--z-fixed);
    transition: width var(--transition-normal);
}

/* Collapsed State */
.sidebar.collapsed {
    width: var(--sidebar-width-collapsed);
}
.sidebar.collapsed .nav-label,
.sidebar.collapsed .logo-text,
.sidebar.collapsed .sidebar-footer-text {
    display: none;
}
.sidebar.collapsed .nav-item {
    justify-content: center;
    padding: var(--spacing-md);
}

/* Sidebar Header */
.sidebar-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--header-height);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-inverse);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    opacity: 0.7;
    transition: all var(--transition-fast);
}
.sidebar-toggle:hover {
    opacity: 1;
    background: rgba(255,255,255,0.1);
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md);
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-inverse);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xs);
    opacity: 0.7;
    transition: all var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
}
.nav-item:hover {
    opacity: 1;
    background: rgba(255,255,255,0.1);
    text-decoration: none;
}
.nav-item.active {
    opacity: 1;
    background: var(--primary);
}

.nav-item .icon {
    flex-shrink: 0;
}

.nav-label {
    white-space: nowrap;
    overflow: hidden;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: var(--spacing-md);
    border-top: 1px solid rgba(255,255,255,0.1);
}

.sidebar-footer-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    opacity: 0.7;
    transition: all var(--transition-fast);
}
.sidebar-footer-item:hover {
    opacity: 1;
    background: rgba(255,255,255,0.1);
}

.sidebar-version {
    font-size: var(--font-size-xs);
    opacity: 0.5;
    text-align: center;
    margin-top: var(--spacing-sm);
}

/* ----- Admin Mode ----- */
.sidebar.admin-mode {
    border-right: 3px solid var(--primary);
}

.sidebar.admin-mode .nav-item {
    cursor: grab;
    transition: all var(--transition-fast);
}

.sidebar.admin-mode .nav-item:active {
    cursor: grabbing;
}

.sidebar.admin-mode .nav-item.dragging {
    opacity: 0.5;
    transform: scale(0.98);
}

.sidebar.admin-mode .nav-item.drag-over {
    border-top: 2px solid var(--primary);
    margin-top: -2px;
    background: rgba(249, 115, 22, 0.2);
}

.sidebar-footer-item.active {
    background: var(--primary) !important;
    opacity: 1 !important;
}

/* ----- Main Content ----- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    background: var(--bg-secondary);
    transition: margin-left var(--transition-normal);
}

.sidebar.collapsed ~ .main-content {
    margin-left: var(--sidebar-width-collapsed);
}

.content {
    padding: var(--spacing-lg);
    max-width: var(--content-max-width);
}

/* Page Header */
.page-header {
    margin-bottom: var(--spacing-lg);
}
.page-header h1 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}
.page-header h1 .icon {
    color: var(--primary);
}
.page-header p {
    color: var(--text-muted);
}

/* ==========================================================================
 * 3. KOMPONENTEN
 * ========================================================================== */

/* ----- Buttons ----- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary);
    color: white;
}
.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-color);
}
.btn-secondary:hover:not(:disabled) {
    background: var(--bg-secondary);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-color);
}
.btn-outline:hover:not(:disabled) {
    background: var(--bg-tertiary);
}

.btn-danger {
    background: var(--error);
    color: white;
}
.btn-danger:hover:not(:disabled) {
    background: var(--error-hover);
}

.btn-success {
    background: var(--success);
    color: white;
}
.btn-success:hover:not(:disabled) {
    background: var(--success-hover);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-md);
}

/* ----- Cards ----- */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    font-weight: var(--font-weight-semibold);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}
/* ----- Card Title ----- */
.card-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
}

.card-title .icon {
    color: var(--primary);
    position: relative;
    top: 1px;
}

/* ----- Forms ----- */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

/* ----- Tables ----- */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    background: var(--bg-secondary);
}

.table tbody tr:hover {
    background: var(--bg-tertiary);
}

/* ----- Badges ----- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.badge-primary { background: var(--primary-light); color: var(--primary-hover); }
.badge-success { background: #dcfce7; color: var(--success-hover); }
.badge-warning { background: #fef3c7; color: var(--warning-hover); }
.badge-error { background: #fee2e2; color: var(--error-hover); }

/* ----- Alerts ----- */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.alert-info { background: #dbeafe; color: var(--info-hover); }
.alert-success { background: #dcfce7; color: var(--success-hover); }
.alert-warning { background: #fef3c7; color: var(--warning-hover); }
.alert-error { background: #fee2e2; color: var(--error-hover); }

/* ==========================================================================
 * 4. TABS
 * ========================================================================== */

.tabs {
    width: 100%;
}

.tab-nav {
    display: flex;
    gap: var(--spacing-xs);
    border-bottom: 2px solid var(--border-color);
    margin-bottom: var(--spacing-md);
}

.tab-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}
.tab-btn:hover {
    color: var(--text-primary);
}
.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    /* Container für Panels */
}

.tab-panel {
    display: none;
}
.tab-panel.active {
    display: block;
}

/* ==========================================================================
 * 5. MODAL
 * ========================================================================== */

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
    z-index: var(--z-modal-backdrop);
}
.modal-backdrop.visible {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.95) translateY(-20px);
    transition: transform var(--transition-normal);
}
.modal-backdrop.visible .modal {
    transform: scale(1) translateY(0);
}

.modal-sm { max-width: 400px; }
.modal-lg { max-width: 700px; }
.modal-xl { max-width: 900px; }

.modal-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--spacing-xs);
    line-height: 1;
    border-radius: var(--radius-sm);
}
.modal-close:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* ==========================================================================
 * 6. TOAST
 * ========================================================================== */

.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: toast-in 0.3s ease;
    max-width: 400px;
}

.toast.removing {
    animation: toast-out 0.3s ease forwards;
}

.toast-success { border-left: 4px solid var(--success); }
.toast-error { border-left: 4px solid var(--error); }
.toast-warning { border-left: 4px solid var(--warning); }
.toast-info { border-left: 4px solid var(--info); }

@keyframes toast-in {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes toast-out {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* ==========================================================================
 * 7. UTILITIES
 * ========================================================================== */

/* ----- Spacing ----- */
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.pt-md { padding-top: var(--spacing-md); }
.pb-md { padding-bottom: var(--spacing-md); }
.px-md { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
.py-md { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }

/* ----- Flexbox ----- */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }

/* ----- Text ----- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-error { color: var(--error); }
.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }
.font-bold { font-weight: var(--font-weight-bold); }

/* ----- Display ----- */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

/* ----- Avatar ----- */
.avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
}
.avatar-sm { width: 28px; height: 28px; font-size: 10px; }
.avatar-lg { width: 48px; height: 48px; font-size: var(--font-size-md); }

/* ----- Stat Cards ----- */
.stat-card {
    text-align: center;
}
.stat-icon {
    margin-bottom: var(--spacing-sm);
}
.stat-icon .icon {
    width: 32px;
    height: 32px;
}
.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}
.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}
.stat-trend {
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
}

/* ----- Chart Placeholder ----- */
.chart-placeholder {
    height: 200px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
}
.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-md);
    height: 100%;
    width: 100%;
    padding: var(--spacing-md) 0;
}
.chart-bar {
    flex: 1;
    background: var(--primary);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    min-height: 20px;
    position: relative;
    transition: all 0.3s ease;
}
.chart-bar:hover {
    background: var(--primary-hover);
}
.chart-bar span {
    position: absolute;
    bottom: -24px;
    left: 50%;
    transform: translateX(-50%);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* ----- Distribution Bars ----- */
.distribution-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}
.distribution-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}
.distribution-label {
    width: 140px;
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}
.distribution-bar {
    flex: 1;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}
.distribution-fill {
    height: 100%;
    border-radius: var(--radius-full);
    transition: width 0.5s ease;
}
.distribution-value {
    width: 40px;
    text-align: right;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

/* ----- Icons ----- */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: var(--icon-size-md);
    height: var(--icon-size-md);
    flex-shrink: 0;
}
.icon svg {
    width: 100%;
    height: 100%;
}

.icon-sm, .icon.sm {
    width: var(--icon-size-sm);
    height: var(--icon-size-sm);
}

.icon-lg, .icon.lg {
    width: var(--icon-size-lg);
    height: var(--icon-size-lg);
}

.icon-xl, .icon.xl {
    width: var(--icon-size-xl);
    height: var(--icon-size-xl);
}

/* ----- Loading ----- */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ----- Grid ----- */
.grid {
    display: grid;
    gap: var(--spacing-md);
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}
/* ----- Zusaetzliche Utilities ----- */
.gap-lg { gap: var(--spacing-lg); }
.gap-xs { gap: var(--spacing-xs); }
.w-full { width: 100%; }
.flex-1 { flex: 1; }
.justify-center { justify-content: center; }
.cursor-pointer { cursor: pointer; }
.border-t { border-top: 1px solid var(--border-color); }

/* ----- Button Group / Toggle ----- */
.btn-group {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-toggle {
    flex: 1;
    border: 2px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-secondary);
}

.btn-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-toggle.active {
    border-color: var(--primary);
    background: var(--primary);
    color: white;
}

/* ----- Swatch (Farbkreis) ----- */
.swatch {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast);
    cursor: pointer;
}

.swatch:hover {
    transform: scale(1.1);
}

.swatch-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.swatch-item:hover {
    background: var(--bg-secondary);
}

.swatch-item.active {
    border-color: var(--text-primary);
    background: var(--bg-secondary);
}

.swatch-item.active .swatch {
    box-shadow: 0 0 0 3px var(--bg-primary), 0 0 0 5px var(--text-primary);
}

.swatch-label {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* ----- Upload Area ----- */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.upload-area:hover {
    border-color: var(--primary);
    background: var(--bg-secondary);
}

.upload-area.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
}

/* ----- Page Footer ----- */
.page-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

@media (max-width: 600px) {
    .page-footer {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}