/* ============================================
   CoKi Design System - Konsistentes UI
   ============================================
   Einheitliches Design für alle Module
   Glasmorphism-Stil für Header und Navigation
*/

:root {
    /* Primärfarben - Türkis/Cyan aus dem Logo */
    --coki-primary: #06b6d4;
    --coki-primary-hover: #0891b2;
    --coki-primary-light: #22d3ee;
    --coki-primary-glow: rgba(6, 182, 212, 0.4);
    
    /* Sekundär/Akzent - Blau aus dem Logo */
    --coki-accent: #0ea5e9;
    --coki-accent-hover: #0284c7;
    --coki-accent-light: #38bdf8;
    
    /* Dunkle Palette */
    --coki-dark-bg: #0a0f1a;
    --coki-dark-surface: #111827;
    --coki-dark-card: #1e293b;
    --coki-dark-elevated: #283548;
    --coki-dark-border: #334155;
    --coki-dark-border-light: #475569;
    
    /* Alias-Variablen für Kompatibilität */
    --dark-bg: var(--coki-dark-bg);
    --dark-surface: var(--coki-dark-surface);
    --dark-card: var(--coki-dark-card);
    --dark-elevated: var(--coki-dark-elevated);
    --dark-border: var(--coki-dark-border);
    --primary-color: var(--coki-primary);
    --accent-color: var(--coki-accent);
    
    /* Glasmorphism */
    --glass-bg: rgba(17, 24, 39, 0.85);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-highlight: rgba(255, 255, 255, 0.05);
    
    /* Status-Farben */
    --coki-success: #10b981;
    --coki-success-bg: rgba(16, 185, 129, 0.15);
    --coki-warning: #f59e0b;
    --coki-warning-bg: rgba(245, 158, 11, 0.15);
    --coki-danger: #ef4444;
    --coki-danger-bg: rgba(239, 68, 68, 0.15);
    --coki-info: #3b82f6;
    --coki-info-bg: rgba(59, 130, 246, 0.15);
    
    /* Text */
    --text-white: #ffffff;
    --text-primary: rgba(255, 255, 255, 0.95);
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.45);
    --text-disabled: rgba(255, 255, 255, 0.25);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 50%, #14b8a6 100%);
    --gradient-surface: linear-gradient(180deg, rgba(30, 41, 59, 0.8) 0%, rgba(17, 24, 39, 0.95) 100%);
    --gradient-glow: radial-gradient(ellipse at 50% 0%, rgba(6, 182, 212, 0.15) 0%, transparent 60%);
    
    /* Layout */
    --sidebar-width: 260px;
    --header-height: 64px;
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(6, 182, 212, 0.2);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

/* ============================================
   Base Styles
   ============================================ */

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--coki-dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Subtiler animierter Hintergrund */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(14, 165, 233, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(20, 184, 166, 0.04) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

/* ============================================
   Glasmorphism Components
   ============================================ */

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-md);
}

.glass-card {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-normal);
}

.glass-card:hover {
    border-color: rgba(6, 182, 212, 0.3);
    box-shadow: var(--shadow-glow);
}

/* ============================================
   Sidebar - Glasmorphism Style
   ============================================ */

.coki-sidebar {
    width: var(--sidebar-width);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
    z-index: 100;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.coki-sidebar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: var(--gradient-glow);
    pointer-events: none;
}

.sidebar-brand {
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    position: relative;
}

.sidebar-brand-logo {
    width: 36px;
    height: 36px;
    border-radius: var(--border-radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
}

.sidebar-brand-logo img {
    width: 24px;
    height: 24px;
}

.sidebar-brand-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-back-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8125rem;
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
    transition: all var(--transition-fast);
}

.sidebar-back-link:hover {
    color: var(--coki-primary);
    background: var(--glass-highlight);
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 1.5rem;
}

.nav-section-title {
    padding: 0.5rem 1.5rem;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-disabled);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
    cursor: pointer;
    position: relative;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--coki-primary);
    border-radius: 0 2px 2px 0;
    transition: height var(--transition-fast);
}

.nav-item:hover {
    color: var(--text-white);
    background: var(--glass-highlight);
}

.nav-item:hover::before {
    height: 50%;
}

.nav-item.active {
    color: var(--coki-primary-light);
    background: linear-gradient(90deg, rgba(6, 182, 212, 0.12) 0%, transparent 100%);
}

.nav-item.active::before {
    height: 70%;
}

.nav-item-icon {
    width: 20px;
    height: 20px;
    opacity: 0.8;
    flex-shrink: 0;
}

.nav-item.active .nav-item-icon {
    opacity: 1;
}

.nav-item-badge {
    margin-left: auto;
    padding: 0.125rem 0.5rem;
    background: var(--coki-primary);
    color: white;
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: 10px;
}

/* ============================================
   Header - Glasmorphism Style (Matching Sidebar)
   ============================================ */

.coki-header {
    height: var(--header-height);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 50;
}

.coki-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(90deg, 
        rgba(6, 182, 212, 0.03) 0%, 
        transparent 30%,
        transparent 70%,
        rgba(14, 165, 233, 0.03) 100%);
    pointer-events: none;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
}

.header-selectors {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.selector-group {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.selector-label {
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.coki-select {
    padding: 0.5rem 0.875rem;
    padding-right: 2rem;
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-size: 0.8125rem;
    cursor: pointer;
    min-width: 160px;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.5)' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    transition: all var(--transition-fast);
}

.coki-select:hover {
    border-color: rgba(6, 182, 212, 0.4);
}

.coki-select:focus {
    outline: none;
    border-color: var(--coki-primary);
    box-shadow: 0 0 0 3px var(--coki-primary-glow);
}

.selector-separator {
    color: var(--text-disabled);
    font-size: 1.25rem;
    margin-top: 0.75rem;
}

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

.llm-selector-wrapper {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.5rem 1rem;
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
}

.llm-selector-wrapper:hover {
    border-color: rgba(6, 182, 212, 0.4);
}

.llm-icon {
    color: var(--coki-primary);
    width: 18px;
    height: 18px;
}

.llm-selector {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 0.8125rem;
    cursor: pointer;
    min-width: 140px;
}

.llm-selector:focus {
    outline: none;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    position: relative;
}

/* User Menu */
.user-menu {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.user-menu:hover {
    background: var(--glass-highlight);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    box-shadow: var(--shadow-sm);
}

.user-info {
    text-align: left;
}

.user-name {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.user-role {
    font-size: 0.6875rem;
    color: var(--text-muted);
}

/* Logout Button */
.coki-btn-ghost {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    transition: all var(--transition-fast);
}

.coki-btn-ghost:hover {
    background: var(--glass-highlight);
    color: var(--text-white);
    border-color: rgba(255, 255, 255, 0.15);
}

/* ============================================
   Main Content Area
   ============================================ */

.coki-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.page-content {
    flex: 1;
    padding: 1.5rem;
}

/* Page Header */
.page-header {
    margin-bottom: 1.5rem;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.25rem;
}

.page-subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ============================================
   Cards - Glasmorphism Style
   ============================================ */

.coki-card {
    background: rgba(30, 41, 59, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 1.25rem;
    margin-bottom: 1rem;
    transition: all var(--transition-normal);
}

.coki-card:hover {
    border-color: rgba(6, 182, 212, 0.2);
}

.coki-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--glass-border);
}

.coki-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-white);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ============================================
   Buttons
   ============================================ */

.coki-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--border-radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.coki-btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 2px 12px var(--coki-primary-glow);
}

.coki-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--coki-primary-glow);
}

.coki-btn-secondary {
    background: rgba(30, 41, 59, 0.8);
    color: var(--text-secondary);
    border: 1px solid var(--glass-border);
}

.coki-btn-secondary:hover {
    background: var(--coki-dark-elevated);
    color: var(--text-white);
    border-color: rgba(255, 255, 255, 0.15);
}

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

.coki-btn-success:hover {
    background: #0d9668;
}

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

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

.coki-btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.coki-btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

.coki-btn-icon {
    padding: 0.5rem;
    border-radius: var(--border-radius-sm);
}

/* ============================================
   Form Elements
   ============================================ */

.coki-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(17, 24, 39, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.coki-input:hover {
    border-color: rgba(255, 255, 255, 0.15);
}

.coki-input:focus {
    outline: none;
    border-color: var(--coki-primary);
    box-shadow: 0 0 0 3px var(--coki-primary-glow);
}

.coki-input::placeholder {
    color: var(--text-disabled);
}

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

.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* ============================================
   Badges & Tags
   ============================================ */

.coki-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.625rem;
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.coki-badge-primary {
    background: rgba(6, 182, 212, 0.2);
    color: var(--coki-primary-light);
}

.coki-badge-success {
    background: var(--coki-success-bg);
    color: var(--coki-success);
}

.coki-badge-warning {
    background: var(--coki-warning-bg);
    color: var(--coki-warning);
}

.coki-badge-danger {
    background: var(--coki-danger-bg);
    color: var(--coki-danger);
}

/* ============================================
   Tooltips
   ============================================ */

[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    padding: 0.5rem 0.75rem;
    background: var(--coki-dark-elevated);
    color: var(--text-primary);
    font-size: 0.75rem;
    border-radius: var(--border-radius-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-8px);
}

/* ============================================
   Animations
   ============================================ */

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

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

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.animate-fadeIn { animation: fadeIn 0.3s ease; }
.animate-slideUp { animation: slideUp 0.4s ease; }
.animate-slideInRight { animation: slideInRight 0.4s ease; }
.animate-pulse { animation: pulse 2s ease infinite; }

/* Loading Skeleton */
.skeleton {
    background: linear-gradient(90deg, 
        var(--coki-dark-card) 25%, 
        var(--coki-dark-elevated) 50%, 
        var(--coki-dark-card) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--border-radius-sm);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
    :root {
        --sidebar-width: 80px;
    }
    
    .sidebar-brand-text,
    .nav-section-title,
    .nav-item span:not(.nav-item-icon) {
        display: none;
    }
    
    .nav-item {
        justify-content: center;
        padding: 1rem;
    }
    
    .nav-item-icon {
        margin: 0;
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 0px;
    }
    
    .coki-sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }
    
    .coki-sidebar.open {
        transform: translateX(0);
        width: 260px;
    }
    
    .coki-main {
        margin-left: 0;
    }
}