/* Admin CSS - Mobile First */
:root {
    --primary: #667eea;
    --primary-dark: #5568d3;
    --danger: #e53e3e;
    --success: #38a169;
    --warning: #dd6b20;
    --gray-50: #f7fafc;
    --gray-100: #edf2f7;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e0;
    --gray-400: #a0aec0;
    --gray-600: #718096;
    --gray-700: #4a5568;
    --gray-800: #2d3748;
    --gray-900: #1a202c;
    --sidebar-width: 260px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--gray-50);
}

/* Layout */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: -var(--sidebar-width);
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--gray-900);
    color: white;
    transition: left 0.3s;
    z-index: 1000;
    overflow-y: auto;
}

.sidebar.active {
    left: 0;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h1 {
    font-size: 20px;
    font-weight: 600;
}

.sidebar-nav {
    padding: 20px 0;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--gray-300);
    text-decoration: none;
    transition: all 0.2s;
}

.sidebar-nav a:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

.sidebar-nav a.active {
    background: var(--primary);
    color: white;
}

.sidebar-nav-icon {
    margin-right: 10px;
    font-size: 18px;
}

.sidebar-divider {
    height: 1px;
    background: rgba(255,255,255,0.1);
    margin: 12px 20px;
}

/* Main Content */
.main-content {
    flex: 1;
    width: 100%;
    transition: margin-left 0.3s;
}

/* Header */
.header {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.menu-toggle {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--gray-700);
    padding: 4px;
}

.header-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
}

.header-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-email {
    display: none;
    color: var(--gray-600);
    font-size: 13px;
}

/* Content Area */
.content {
    padding: 20px;
    max-width: 1400px;
}

/* Cards */
.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.card-header {
    padding: 20px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
}

.card-body {
    padding: 20px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.stat-label {
    color: var(--gray-600);
    font-size: 13px;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 6px;
    color: var(--gray-700);
    font-weight: 500;
    font-size: 14px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
input[type="datetime-local"],
input[type="color"],
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.2s;
}

input[type="color"] {
    height: 46px;
    cursor: pointer;
    padding: 4px;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
}

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

.help-text {
    font-size: 12px;
    color: var(--gray-600);
    margin-top: 4px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    text-align: center;
}

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

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

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

.btn-danger:hover {
    background: #c53030;
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-300);
}

.btn-small {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--gray-700);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

tr:hover {
    background: var(--gray-50);
}

.table-actions {
    display: flex;
    gap: 8px;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: #c6f6d5;
    color: #22543d;
}

.badge-danger {
    background: #fed7d7;
    color: #9b2c2c;
}

.badge-warning {
    background: #feebc8;
    color: #7c2d12;
}

.badge-info {
    background: #bee3f8;
    color: #2c5282;
}

/* Tabs - Pill Style */
.tabs {
    display: inline-flex;
    gap: 4px;
    background: var(--gray-100);
    padding: 4px;
    border-radius: 8px;
}

.tab {
    padding: 8px 16px;
    text-decoration: none;
    color: var(--gray-600);
    font-weight: 500;
    font-size: 14px;
    border-radius: 6px;
    transition: all 0.2s;
}

.tab:hover {
    color: var(--gray-800);
    background: rgba(255,255,255,0.5);
}

.tab.active {
    color: var(--gray-900);
    background: white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.tab .tab-count {
    display: inline-block;
    background: var(--gray-200);
    color: var(--gray-700);
    font-size: 12px;
    padding: 2px 6px;
    border-radius: 10px;
    margin-left: 6px;
}

.tab.active .tab-count {
    background: var(--primary);
    color: white;
}

/* Button Success (für Aktivieren) */
.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: #2f855a;
    color: white;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success {
    background: #c6f6d5;
    color: #22543d;
    border: 1px solid #68d391;
}

.alert-error {
    background: #fed7d7;
    color: #9b2c2c;
    border: 1px solid #fc8181;
}

.alert-info {
    background: #bee3f8;
    color: #2c5282;
    border: 1px solid #90cdf4;
}

/* Filter Form */
.filter-form {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

.filter-actions {
    display: flex;
    gap: 8px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray-600);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* Overlay */
.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
}

.overlay.active {
    display: block;
}

/* Tablet & Desktop */
@media (min-width: 768px) {
    .sidebar {
        left: 0;
    }
    
    .main-content {
        margin-left: var(--sidebar-width);
    }
    
    .menu-toggle {
        display: none;
    }
    
    .user-email {
        display: block;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .filter-form {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .content {
        padding: 30px;
    }
}

@media (min-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .filter-form {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Utility Classes */
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--gray-600); }
.text-small { font-size: 12px; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }