/**
 * HowTo Videos - Hauptstylesheet
 * Modernes, responsives Design mit Dark Mode
 */

/* ========================================
   CSS Custom Properties (Variables)
   ======================================== */
:root {
    /* Farben - Light Mode */
    --color-bg: #f8fafc;
    --color-bg-secondary: #ffffff;
    --color-bg-tertiary: #f1f5f9;
    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-muted: #94a3b8;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-primary-light: #dbeafe;
    --color-primary-dark: #1d4ed8;
    
    --color-success: #22c55e;
    --color-success-light: #dcfce7;
    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;
    --color-danger: #ef4444;
    --color-danger-light: #fee2e2;
    
    --color-favorite: #facc15;
    
    /* Schatten */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Abstände */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Typografie */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 1100;
    --z-modal: 300;
    --z-toast: 400;
}

/* Dark Mode */
[data-theme="dark"] {
    --color-bg: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-bg-tertiary: #334155;
    --color-text: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    --color-border: #334155;
    --color-border-light: #1e293b;
    
    --color-primary-light: #1e3a5f;
    --color-success-light: #14532d;
    --color-warning-light: #78350f;
    --color-danger-light: #7f1d1d;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.4), 0 1px 2px -1px rgb(0 0 0 / 0.4);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);
}

/* ========================================
   Reset & Base Styles
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, video, iframe {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-hover);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* Focus Styles */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ========================================
   Header
   ======================================== */
.main-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.header-container {
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo:hover {
    color: var(--color-primary);
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
}

.main-nav {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link svg {
    width: 20px;
    height: 20px;
}

.nav-link:hover {
    color: var(--color-text);
    background: var(--color-bg-tertiary);
}

.nav-link.active {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-left: auto;
}

/* User Profile Link mit Username */
.user-profile-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.user-profile-link:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-primary);
}

.user-profile-link svg {
    width: 20px;
    height: 20px;
}

.user-profile-link .profile-avatar {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.user-profile-link .username {
    font-size: 0.875rem;
    font-weight: 500;
}

@media (max-width: 640px) {
    .user-profile-link .username {
        display: none;
    }
}

/* Profile Dropdown */
.profile-dropdown-wrapper {
    position: relative;
}

.profile-dropdown-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    background: var(--color-bg-tertiary);
    cursor: pointer;
    padding: 0;
    overflow: hidden;
    transition: border-color var(--transition-fast);
}

.profile-dropdown-toggle:hover,
.profile-dropdown-toggle.active {
    border-color: var(--color-primary);
}

.profile-dropdown-toggle .profile-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-dropdown-toggle svg {
    width: 20px;
    height: 20px;
    color: var(--color-text);
}

.profile-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 280px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.96);
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
}

.profile-dropdown.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.profile-dropdown-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
}

.profile-dropdown-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    overflow: hidden;
    flex-shrink: 0;
    background: var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-dropdown-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-dropdown-avatar svg {
    width: 22px;
    height: 22px;
    color: var(--color-text-secondary);
}

.profile-dropdown-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.profile-dropdown-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.profile-dropdown-role {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.profile-dropdown-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border-top: 1px solid var(--color-border);
    margin-bottom: 2px;
}

.profile-dropdown-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.5rem 0.25rem;
    border-right: 1px solid var(--color-border);
}

.profile-dropdown-stat:last-child {
    border-right: none;
}

.profile-dropdown-stat-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
}

.profile-dropdown-stat-label {
    font-size: 0.7rem;
    color: var(--color-text-secondary);
    margin-top: 1px;
}

.profile-dropdown-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-xs) 0;
}

.profile-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.9rem;
    border: none;
    background: none;
    width: 100%;
    cursor: pointer;
    font-family: inherit;
    transition: background var(--transition-fast);
}

.profile-dropdown-item:hover {
    background: var(--color-bg-tertiary);
}

.profile-dropdown-item svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--color-text-secondary);
}

.profile-dropdown-logout {
    color: var(--color-danger, #e53935);
}

.profile-dropdown-logout svg {
    color: var(--color-danger, #e53935);
}

/* Theme icons in dropdown — show/hide based on current theme */
.profile-dropdown-item .sun-icon { display: none; }
.profile-dropdown-item .moon-icon { display: block; }
[data-theme="dark"] .profile-dropdown-item .sun-icon { display: block; }
[data-theme="dark"] .profile-dropdown-item .moon-icon { display: none; }

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.user-info svg {
    width: 18px;
    height: 18px;
}

/* ========================================
   Main Content
   ======================================== */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
    min-height: calc(100vh - 73px);
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    gap: var(--spacing-md);
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

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

.btn-primary:hover {
    background: var(--color-primary-hover);
    color: white;
}

.btn-outline {
    border: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    color: var(--color-text);
}

.btn-outline:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-text-muted);
    color: var(--color-text);
}

.btn-ghost {
    color: var(--color-text-secondary);
}

.btn-ghost:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}

.btn-danger {
    background: var(--color-danger);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
    color: white;
}

.btn-icon {
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    background: var(--color-bg-tertiary);
}

.btn-icon:hover {
    background: var(--color-border);
    color: var(--color-text);
}

.btn-icon.is-favorite {
    color: var(--color-favorite);
    background: rgba(250, 204, 21, 0.1);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8125rem;
}

.btn-sm svg {
    width: 16px;
    height: 16px;
}

.btn[hidden] {
    display: none;
}

.icon-btn {
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.icon-btn:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}

.icon-btn svg {
    width: 20px;
    height: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-text);
}

.form-group small {
    display: block;
    margin-top: var(--spacing-xs);
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}

input[type="text"],
input[type="password"],
input[type="email"],
textarea,
select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

input::placeholder,
textarea::placeholder {
    color: var(--color-text-muted);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper svg {
    position: absolute;
    left: var(--spacing-md);
    width: 20px;
    height: 20px;
    color: var(--color-text-muted);
    pointer-events: none;
}

.input-wrapper input {
    padding-left: calc(var(--spacing-md) * 2 + 20px);
}

.input-wrapper .toggle-password {
    position: absolute;
    right: var(--spacing-sm);
    padding: var(--spacing-xs);
    color: var(--color-text-muted);
}

.input-wrapper .toggle-password:hover {
    color: var(--color-text);
}

.toggle-password .eye-closed {
    display: none;
}

.toggle-password.show-password .eye-open {
    display: none;
}

.toggle-password.show-password .eye-closed {
    display: block;
}

.form-select {
    padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-sm) center;
    background-size: 18px;
    cursor: pointer;
    appearance: none;
}

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

.form-section {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.form-section h2 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

/* ========================================
   Filter Bar
   ======================================== */
.filter-bar {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 250px;
    max-width: 400px;
}

.search-box svg {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--color-text-muted);
}

.search-box input {
    padding-left: calc(var(--spacing-md) * 2 + 20px);
    padding-right: calc(var(--spacing-md) + 24px);
}

.clear-search {
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    padding: var(--spacing-xs);
    color: var(--color-text-muted);
    border-radius: var(--radius-sm);
}

.clear-search:hover {
    color: var(--color-text);
    background: var(--color-bg-tertiary);
}

.clear-search svg {
    position: static;
    transform: none;
    width: 16px;
    height: 16px;
}

.filter-options {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* ========================================
   Tags Bar
   ======================================== */
.tags-bar {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
    -webkit-overflow-scrolling: touch;
}

.tag-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    white-space: nowrap;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.tag-chip:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-text-muted);
    color: var(--color-text);
}

.tag-chip.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.tag-count {
    font-size: 0.75rem;
    padding: 1px 6px;
    background: rgba(0,0,0,0.1);
    border-radius: var(--radius-full);
}

.tag-chip.active .tag-count {
    background: rgba(255,255,255,0.2);
}

/* ========================================
   Posts Grid
   ======================================== */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.post-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.post-card:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.post-card.is-focused {
    box-shadow: 0 0 0 3px var(--color-primary);
}

.post-thumbnail {
    position: relative;
    aspect-ratio: 16/9;
    background: var(--color-bg-tertiary);
    overflow: hidden;
}

.post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.post-card:hover .post-thumbnail img {
    transform: scale(1.05);
}

.post-thumbnail-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
}

.post-thumbnail-placeholder svg {
    width: 48px;
    height: 48px;
}

.post-type-badge {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    padding: 2px 8px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    background: rgba(0,0,0,0.7);
    color: white;
    border-radius: var(--radius-sm);
}

.post-favorite-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: var(--spacing-xs);
    background: rgba(0,0,0,0.5);
    border-radius: var(--radius-full);
    color: white;
    opacity: 0;
    transition: all var(--transition-fast);
}

.post-card:hover .post-favorite-btn {
    opacity: 1;
}

.post-favorite-btn:hover {
    background: rgba(0,0,0,0.7);
    transform: scale(1.1);
}

.post-favorite-btn.is-favorite {
    opacity: 1;
    color: var(--color-favorite);
}

.post-favorite-btn svg {
    width: 20px;
    height: 20px;
}

.post-content {
    padding: var(--spacing-md);
}

.post-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 0.8125rem;
}

.post-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.post-date svg {
    width: 14px;
    height: 14px;
}

.post-tags-preview {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    flex-wrap: wrap;
}

.post-tags-preview .tag-chip {
    font-size: 0.75rem;
    padding: 2px 8px;
}

/* ========================================
   Loading & Empty States
   ======================================== */
.loading-indicator {
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-2xl);
    color: var(--color-text-secondary);
}

.loading-indicator:not([hidden]) {
    display: flex;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.no-results {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-secondary);
}

.no-results svg {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    color: var(--color-text-muted);
}

.no-results h2 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.no-results p {
    margin-bottom: var(--spacing-lg);
}

/* ========================================
   Pagination
   ======================================== */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-2xl);
}

/* ========================================
   Upload Zone
   ======================================== */
.drop-zone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
}

.drop-zone:hover,
.drop-zone.dragover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.drop-zone svg {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-md);
    color: var(--color-text-muted);
}

.drop-zone h3 {
    margin-bottom: var(--spacing-xs);
}

.drop-zone p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.drop-zone small {
    color: var(--color-text-muted);
}

.file-list {
    margin-top: var(--spacing-lg);
}

.file-list h4 {
    margin-bottom: var(--spacing-md);
}

.file-list ul {
    list-style: none;
}

.file-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
}

.file-list .file-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
}

.file-list .file-icon svg {
    width: 24px;
    height: 24px;
}

.file-list .file-details {
    flex: 1;
    min-width: 0;
}

.file-list .file-name {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-list .file-size {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.file-list .file-remove {
    padding: var(--spacing-xs);
    color: var(--color-text-muted);
    border-radius: var(--radius-sm);
}

.file-list .file-remove:hover {
    color: var(--color-danger);
    background: var(--color-danger-light);
}

.file-list .file-remove svg {
    width: 18px;
    height: 18px;
}

/* Thumbnail Button in File List */
.file-list .file-thumbnail-btn {
    padding: var(--spacing-xs);
    color: var(--color-text-muted);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.file-list .file-thumbnail-btn:hover {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.file-list .file-thumbnail-btn.active {
    color: var(--color-primary);
}

.file-list .file-thumbnail-btn svg {
    width: 20px;
    height: 20px;
}

.file-list li.is-thumbnail {
    border: 2px solid var(--color-primary);
    background: var(--color-primary-light);
}

.file-list .thumbnail-badge {
    display: inline-block;
    padding: 2px 6px;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-sm);
    margin-left: var(--spacing-xs);
}

/* Upload Progress */
.upload-progress {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.progress-bar {
    height: 8px;
    background: var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
    width: 0%;
}

/* ========================================
   Post Detail
   ======================================== */
.post-detail {
    max-width: 1000px;
    margin: 0 auto;
}

.post-detail .post-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.post-detail .post-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.media-viewer {
    margin-bottom: var(--spacing-xl);
}

.media-section {
    margin-bottom: var(--spacing-xl);
}

.media-section h3 {
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.video-container {
    margin-bottom: var(--spacing-lg);
}

.video-container video {
    width: 100%;
    border-radius: var(--radius-lg);
    background: black;
}

.video-container .media-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
}

.video-container .filename {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* Image Gallery */
.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.gallery-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 50%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-md);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay span {
    color: white;
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.gallery-overlay .btn {
    align-self: flex-start;
}

/* Lightbox */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    background: rgba(0,0,0,0.95);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    font-size: 2rem;
    color: white;
    opacity: 0.7;
}

.lightbox-close:hover {
    opacity: 1;
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    padding: var(--spacing-md);
    color: white;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.lightbox-prev:hover,
.lightbox-next:hover {
    opacity: 1;
}

.lightbox-prev {
    left: var(--spacing-lg);
}

.lightbox-next {
    right: var(--spacing-lg);
}

.lightbox-prev svg,
.lightbox-next svg {
    width: 32px;
    height: 32px;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 80vh;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
}

.lightbox-info {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-md);
    color: white;
    font-size: 0.875rem;
}

/* PDF List */
.pdf-list {
    display: grid;
    gap: var(--spacing-md);
}

.pdf-item {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.pdf-preview {
    height: 300px;
    background: var(--color-bg-tertiary);
}

.pdf-preview iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.pdf-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
}

.pdf-info svg {
    width: 24px;
    height: 24px;
    color: var(--color-danger);
    flex-shrink: 0;
}

.pdf-info span {
    flex: 1;
    font-weight: 500;
}

/* Unified Media Item Styles */
.video-item,
.image-item,
.pdf-item,
.excel-item,
.word-item {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

/* Unified Media Header */
.media-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-tertiary);
}

.media-header svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--color-text-muted);
}

.media-header svg.excel-icon {
    color: #217346;
}

.media-header svg.word-icon {
    color: #2b579a;
}

.media-header span {
    flex: 1;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Video Preview */
.video-preview {
    background: #000;
}

.video-preview video {
    width: 100%;
    max-height: 500px;
    display: block;
}

/* Image List & Preview */
.image-list {
    display: grid;
    gap: var(--spacing-md);
}

.image-preview {
    max-height: 300px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    cursor: pointer;
}

.image-preview img {
    max-width: 100%;
    max-height: 300px;
    object-fit: contain;
}

.excel-header,
.word-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-tertiary);
}

.excel-header svg,
.word-header svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.excel-header svg {
    color: #217346;
}

.word-header svg {
    color: #2b579a;
}

.excel-header span,
.word-header span {
    flex: 1;
    font-weight: 500;
}

.doc-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.excel-preview,
.word-preview {
    max-height: 500px;
    overflow: auto;
    padding: var(--spacing-md);
    background: var(--color-bg);
}

.excel-loading,
.word-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    color: var(--color-text-muted);
}

/* Excel Table Styles */
.excel-preview table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.excel-preview th,
.excel-preview td {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    text-align: left;
    white-space: nowrap;
}

.excel-preview th {
    background: var(--color-bg-tertiary);
    font-weight: 600;
    position: sticky;
    top: 0;
}

.excel-preview tr:nth-child(even) {
    background: var(--color-bg-secondary);
}

.excel-preview tr:hover {
    background: var(--color-bg-tertiary);
}

/* Word Document Styles */
.word-preview .document-content {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

.word-preview .document-content h1,
.word-preview .document-content h2,
.word-preview .document-content h3 {
    margin-top: 1.5em;
    margin-bottom: 0.5em;
}

.word-preview .document-content p {
    margin-bottom: 1em;
}

.word-preview .document-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1em 0;
}

.word-preview .document-content table td,
.word-preview .document-content table th {
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
}

.word-preview .document-content img {
    max-width: 100%;
    height: auto;
}

.excel-error,
.word-error {
    color: var(--color-danger);
    padding: var(--spacing-md);
    text-align: center;
}

/* Small Preview Styles */
.pdf-preview-small {
    height: 200px;
}

.excel-preview-small,
.word-preview-small {
    max-height: 200px;
}

/* Document Viewer Modal */
.doc-viewer-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
}

.doc-viewer-modal[hidden] {
    display: none;
}

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

.doc-viewer-header h3 {
    margin: 0;
    font-size: 1.125rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.doc-viewer-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    font-size: 2rem;
    color: var(--color-text);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background-color 0.2s;
}

.doc-viewer-close:hover {
    background: var(--color-bg-tertiary);
}

.doc-viewer-content {
    flex: 1;
    overflow: auto;
    padding: var(--spacing-lg);
}

.doc-viewer-content iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.doc-viewer-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

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

.doc-viewer-content th {
    background: var(--color-bg-tertiary);
    font-weight: 600;
    position: sticky;
    top: 0;
}

.doc-viewer-content tr:nth-child(even) {
    background: var(--color-bg-secondary);
}

.doc-viewer-content .document-content {
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.8;
    font-size: 1rem;
}

.doc-viewer-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    height: 100%;
    color: var(--color-text-muted);
}

/* Files List */
.files-list {
    display: grid;
    gap: var(--spacing-sm);
}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.file-item svg {
    width: 24px;
    height: 24px;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.file-item .filename {
    flex: 1;
    font-weight: 500;
}

.no-media {
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    color: var(--color-text-muted);
}

.no-media svg {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-md);
}

/* Post Info */
.post-info {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.post-info .post-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.post-info .post-tags {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.post-info .post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.meta-item svg {
    width: 18px;
    height: 18px;
}

.post-description h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.post-description p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ========================================
   Edit Page
   ======================================== */
.existing-files {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.existing-file {
    position: relative;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.existing-file .file-preview {
    aspect-ratio: 16/9;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
}

.existing-file .file-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.existing-file .file-preview svg {
    width: 32px;
    height: 32px;
    color: var(--color-text-muted);
}

.existing-file .file-info {
    padding: var(--spacing-sm);
}

.existing-file .filename {
    font-size: 0.8125rem;
    font-weight: 500;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.existing-file .file-type {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

.existing-file .remove-file {
    padding: var(--spacing-xs);
    background: transparent;
    flex-shrink: 0;
}

.existing-file .remove-file svg {
    width: 16px;
    height: 16px;
}

/* Thumbnail-Markierung */
.existing-file.is-thumbnail {
    border: 2px solid var(--color-primary);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.3);
}

.existing-file.is-thumbnail::before {
    content: 'THUMBNAIL';
    position: absolute;
    top: var(--spacing-xs);
    left: var(--spacing-xs);
    padding: 2px 6px;
    background: var(--color-primary);
    color: white;
    font-size: 0.625rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    z-index: 10;
}

.file-actions {
    display: flex;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    padding-top: 0;
}

.set-thumbnail-btn {
    flex: 1;
    font-size: 0.75rem !important;
    padding: var(--spacing-xs) var(--spacing-sm) !important;
}

.set-thumbnail-btn svg {
    width: 14px;
    height: 14px;
}

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

.no-files {
    color: var(--color-text-muted);
    font-style: italic;
}

/* ========================================
   Login Page
   ======================================== */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: var(--spacing-lg);
}

.login-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-logo {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    color: var(--color-primary);
}

.login-header h1 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.login-header p {
    color: var(--color-text-secondary);
}

.login-form .form-group {
    margin-bottom: var(--spacing-md);
}

/* ========================================
   Alerts
   ======================================== */
.alert {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.alert svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.alert-error {
    background: var(--color-danger-light);
    color: var(--color-danger);
}

.alert-success {
    background: var(--color-success-light);
    color: var(--color-success);
}

.alert-warning {
    background: var(--color-warning-light);
    color: var(--color-warning);
}

/* ========================================
   Toast Notifications
   ======================================== */
.toast-container {
    position: fixed;
    bottom: var(--spacing-xl);
    left: var(--spacing-xl);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    padding-bottom: calc(var(--spacing-md) + 4px);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    animation: slideInLeft 0.3s ease;
    overflow: hidden;
}

.toast svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.toast-success svg {
    color: var(--color-success);
}

.toast-error svg {
    color: var(--color-danger);
}

.toast-message {
    flex: 1;
}

.toast-close {
    padding: var(--spacing-xs);
    color: var(--color-text-muted);
}

.toast-close:hover {
    color: var(--color-text);
}

.toast-close svg {
    width: 16px;
    height: 16px;
}

.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 4px;
    background: var(--color-primary);
    width: 100%;
    transform-origin: left;
    animation: shrinkProgress linear forwards;
}

.toast-success .toast-progress {
    background: var(--color-success);
}

.toast-error .toast-progress {
    background: var(--color-danger);
}

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

@keyframes shrinkProgress {
    from {
        transform: scaleX(1);
    }
    to {
        transform: scaleX(0);
    }
}

/* ========================================
   Modal
   ======================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 400px;
    margin: var(--spacing-lg);
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

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

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-close {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    line-height: 1;
}

.modal-close:hover {
    color: var(--color-text);
}

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

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

/* ========================================
   Theme Toggle
   ======================================== */
#theme-toggle .moon-icon {
    display: none;
}

[data-theme="dark"] #theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] #theme-toggle .moon-icon {
    display: block;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
    .header-container {
        padding: var(--spacing-md);
    }
    
    .main-nav {
        display: none;
    }
    
    .main-content {
        padding: var(--spacing-md);
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .filter-bar {
        flex-direction: column;
    }
    
    .search-box {
        max-width: none;
    }
    
    .filter-options {
        width: 100%;
        justify-content: space-between;
    }
    
    .posts-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .toast-container {
        left: var(--spacing-md);
        right: var(--spacing-md);
        bottom: var(--spacing-md);
    }
    
    .toast {
        min-width: 0;
    }
    
    .form-actions {
        flex-direction: column-reverse;
    }
    
    .form-actions .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .header-actions {
        gap: var(--spacing-sm);
    }
    
    .user-info span {
        display: none;
    }
    
    .logout-form .btn span {
        display: none;
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
    }
}