/**
 * KI Text Tool - Hauptstyles
 * Neutral, Modern, Apple-like mit Glass-Effect
 */

/* ========================================
   CSS Variables
   ======================================== */
:root {
    /* Colors - Neutral Black & White */
    --color-black: #000000;
    --color-white: #ffffff;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;

    /* Accent Colors */
    --color-primary: #000000;
    --color-primary-hover: #262626;
    --color-success: #22c55e;
    --color-error: #ef4444;
    --color-warning: #f59e0b;
    --color-info: #3b82f6;

    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    --glass-blur: blur(10px);

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;

    /* Sidebar */
    --sidebar-width: 260px;
}

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

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

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-gray-900);
    background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-gray-200) 100%);
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
}

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

/* ========================================
   App Layout
   ======================================== */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

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

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    color: var(--color-gray-600);
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-xs);
}

.nav-item:hover {
    background: var(--color-gray-200);
    color: var(--color-gray-900);
}

.nav-item.active {
    background: var(--color-black);
    color: var(--color-white);
}

.nav-icon {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

.nav-divider {
    height: 1px;
    background: var(--color-gray-200);
    margin: var(--spacing-md) 0;
}

.nav-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-500);
    padding: var(--spacing-sm) var(--spacing-md);
}

.sidebar-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
}

.user-info {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-sm);
}

.user-name {
    font-weight: 500;
    color: var(--color-gray-900);
}

.user-role {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.logout-btn {
    display: block;
    text-align: center;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    background: var(--color-gray-100);
    color: var(--color-gray-600);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.logout-btn:hover {
    background: var(--color-gray-200);
    color: var(--color-gray-900);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--spacing-xl);
    max-width: 100%;
    overflow-x: hidden;
}

/* ========================================
   Page Header
   ======================================== */
.page-header {
    margin-bottom: var(--spacing-xl);
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-xs);
}

.page-header .subtitle {
    color: var(--color-gray-500);
}

/* ========================================
   Cards & Glass Effect
   ======================================== */
.card, .stat-card, .dashboard-card, .auth-card, .install-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.stat-icon {
    font-size: 2rem;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
}

.stat-content {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

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

.dashboard-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-gray-200);
}

.dashboard-actions {
    margin-bottom: var(--spacing-xl);
}

.quick-links {
    list-style: none;
}

.quick-links li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-100);
}

.quick-links li:last-child {
    border-bottom: none;
}

.quick-links a {
    color: var(--color-gray-700);
    transition: color var(--transition-fast);
}

.quick-links a:hover {
    color: var(--color-black);
}

.info-list {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-sm) var(--spacing-md);
}

.info-list dt {
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

.info-list dd {
    font-weight: 500;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9375rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.btn-primary:hover {
    background: var(--color-gray-800);
}

.btn-secondary {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

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

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

.btn-danger:hover {
    opacity: 0.9;
}

.btn-block {
    width: 100%;
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-icon {
    font-size: 1.25rem;
}

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

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-700);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    color: var(--color-gray-900);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-black);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

.form-group small {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.8125rem;
    color: var(--color-gray-500);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

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

/* ========================================
   Alerts
   ======================================== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--color-success);
    color: #166534;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--color-error);
    color: #991b1b;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--color-warning);
    color: #92400e;
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--color-info);
    color: #1e40af;
}

.alert-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

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

/* ========================================
   Auth Page
   ======================================== */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--spacing-lg);
}

.auth-container {
    width: 100%;
    max-width: 400px;
}

.auth-card {
    padding: var(--spacing-xl);
}

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

.auth-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.auth-form h2 {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

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

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

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

th {
    font-weight: 600;
    color: var(--color-gray-600);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

/* ========================================
   Error Page
   ======================================== */
.error-page {
    text-align: center;
    padding: var(--spacing-2xl);
}

.error-page h1 {
    font-size: 6rem;
    font-weight: 600;
    color: var(--color-gray-300);
    line-height: 1;
}

.error-message {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    margin: var(--spacing-lg) 0 var(--spacing-xl);
}

/* ========================================
   Modals
   ======================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal.open {
    display: flex;
}

.modal-content {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-gray-500);
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.modal-close:hover {
    color: var(--color-gray-900);
}

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

/* Page Header with Button */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--color-success);
}

.badge-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

/* ========================================
   Utilities
   ======================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-error { color: var(--color-error); }
.text-success { color: var(--color-success); }
.text-muted { color: var(--color-gray-500); }

.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); }

.hidden { display: none !important; }

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: var(--spacing-md);
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .form-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Toast Notifications
   ======================================== */
.toast-container {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column-reverse;
    gap: var(--spacing-sm);
    pointer-events: none;
    max-width: 420px;
    width: calc(100% - var(--spacing-xl) * 2);
}

.toast {
    display: flex;
    align-items: stretch;
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15), 0 2px 10px rgba(0, 0, 0, 0.1);
    pointer-events: auto;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.toast-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.toast-hiding {
    opacity: 0;
    transform: translateY(10px) scale(0.95);
}

.toast-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    font-size: 1.25rem;
    font-weight: bold;
    flex-shrink: 0;
}

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

.toast-error .toast-icon {
    background: var(--color-error);
    color: white;
}

.toast-warning .toast-icon {
    background: var(--color-warning);
    color: white;
}

.toast-info .toast-icon {
    background: var(--color-info);
    color: white;
}

.toast-content {
    flex: 1;
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
}

.toast-message {
    font-size: 0.9375rem;
    color: var(--color-gray-800);
    line-height: 1.4;
}

.toast-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-gray-400);
    cursor: pointer;
    transition: color 0.2s, background 0.2s;
    flex-shrink: 0;
}

.toast-close:hover {
    color: var(--color-gray-700);
    background: var(--color-gray-100);
}

.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-gray-200);
}

.toast-progress-bar {
    height: 100%;
    width: 100%;
    background: var(--color-gray-400);
    transform-origin: left;
}

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

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

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

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

/* Toast auf mobilen Geräten */
@media (max-width: 480px) {
    .toast-container {
        bottom: var(--spacing-md);
        width: calc(100% - var(--spacing-md) * 2);
    }

    .toast-icon {
        width: 40px;
    }

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

    .toast-message {
        font-size: 0.875rem;
    }
}