/**
 * ============================================================
 * FRIENDSTIME DESIGN SYSTEM
 * ============================================================
 * Modernes, responsives CSS - 100% selbst gebaut
 * Mobile-First Approach
 * ============================================================
 */

/* ============ DESIGN TOKENS ============ */
:root {
    /* Primary Colors */
    --color-primary: #667eea;
    --color-primary-dark: #764ba2;
    --color-primary-light: #818cf8;
    
    /* Danger/Report Colors */
    --color-danger: #dc2626;
    --color-danger-dark: #991b1b;
    --color-danger-light: #ef4444;
    
    /* Success Colors */
    --color-success: #059669;
    --color-success-dark: #047857;
    --color-success-light: #10b981;
    
    /* Warning Colors */
    --color-warning: #d97706;
    --color-warning-dark: #b45309;
    --color-warning-light: #f59e0b;
    
    /* Info Colors */
    --color-info: #2563eb;
    --color-info-dark: #1d4ed8;
    
    /* Neutral Colors */
    --color-text: #1a1a2e;
    --color-text-light: #4a5568;
    --color-text-muted: #718096;
    --color-bg: #ffffff;
    --color-bg-alt: #f7fafc;
    --color-border: #e2e8f0;
    --color-border-dark: #cbd5e1;
    
    /* Dark Mode Colors */
    --dark-bg: #0f172a;
    --dark-bg-alt: #1e293b;
    --dark-text: #f1f5f9;
    --dark-border: #334155;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.3);
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    --font-mono: 'SF Mono', 'Courier New', monospace;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ============ DARK MODE ============ */
@media (prefers-color-scheme: dark) {
    :root {
        --color-text: var(--dark-text);
        --color-bg: var(--dark-bg);
        --color-bg-alt: var(--dark-bg-alt);
        --color-border: var(--dark-border);
    }
}

[data-theme="dark"] {
    --color-text: var(--dark-text);
    --color-bg: var(--dark-bg);
    --color-bg-alt: var(--dark-bg-alt);
    --color-border: var(--dark-border);
}

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

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

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============ LAYOUT ============ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.card {
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.grid {
    display: grid;
    gap: var(--space-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* ============ HEADER ============ */
.header {
    padding: var(--space-2xl) var(--space-md);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header.primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.header.danger {
    background: linear-gradient(135deg, var(--color-danger) 0%, var(--color-danger-dark) 100%);
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    filter: blur(60px);
}

.header h1 {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 800;
    margin-bottom: var(--space-sm);
    position: relative;
    z-index: 1;
}

.header p {
    font-size: clamp(0.875rem, 2vw, 1rem);
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

/* ============ TYPOGRAPHY ============ */
.section-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 3px solid var(--color-primary);
    display: inline-block;
}

.section-title.danger {
    border-bottom-color: var(--color-danger);
}

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

label {
    display: block;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
    font-size: 0.875rem;
}

input[type="text"],
input[type="email"],
input[type="url"],
input[type="tel"],
input[type="password"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-family: inherit;
    background: var(--color-bg);
    color: var(--color-text);
    transition: all var(--transition-base);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.danger input:focus,
.danger select:focus,
.danger textarea:focus {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

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

/* ============ BUTTONS ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 14px 28px;
    font-size: 0.9375rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
}

.btn-primary:hover {
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.btn-danger {
    background: linear-gradient(135deg, var(--color-danger) 0%, var(--color-danger-dark) 100%);
    color: white;
}

.btn-danger:hover {
    box-shadow: 0 10px 20px rgba(220, 38, 38, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, var(--color-success) 0%, var(--color-success-dark) 100%);
    color: white;
}

.btn-success:hover {
    box-shadow: 0 10px 20px rgba(5, 150, 105, 0.3);
}

.btn-info {
    background: linear-gradient(135deg, var(--color-info) 0%, var(--color-info-dark) 100%);
    color: white;
}

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

.btn-secondary:hover {
    background: var(--color-border-dark);
}

.btn-block {
    width: 100%;
}

/* ============ CARDS & BOXES ============ */
.category-box {
    background: var(--color-bg-alt);
    border-left: 4px solid var(--color-primary);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.category-box:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.category-box.danger {
    border-left-color: var(--color-danger);
    background: #fef2f2;
}

.category-box.danger:hover {
    background: #fee2e2;
}

.info-box {
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    font-size: 0.8125rem;
    line-height: 1.7;
}

.info-box.info {
    background: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 100%);
    border: 2px solid var(--color-info);
    color: #0c4a6e;
}

.info-box.warning {
    background: linear-gradient(135deg, #fef3c7 0%, #fef08a 100%);
    border: 2px solid var(--color-warning);
    color: #92400e;
}

.info-box.danger {
    background: linear-gradient(135deg, #fee2e2 0%, #fef2f2 100%);
    border: 2px solid var(--color-danger);
    color: #7f1d1d;
}

.info-box.success {
    background: linear-gradient(135deg, #d1fae5 0%, #dcfce7 100%);
    border: 2px solid var(--color-success);
    color: #065f46;
}

/* ============ BADGES ============ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-danger {
    background: #fee2e2;
    color: var(--color-danger-dark);
}

.badge-warning {
    background: #fef3c7;
    color: var(--color-warning-dark);
}

.badge-success {
    background: #d1fae5;
    color: var(--color-success-dark);
}

.badge-info {
    background: #dbeafe;
    color: var(--color-info-dark);
}

/* ============ CHECKBOXES & RADIOS ============ */
.checkbox-item,
.radio-item {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.checkbox-item input[type="checkbox"],
.radio-item input[type="radio"] {
    width: 18px;
    height: 18px;
    margin-right: var(--space-sm);
    cursor: pointer;
    accent-color: var(--color-primary);
}

.danger .checkbox-item input,
.danger .radio-item input {
    accent-color: var(--color-danger);
}

.checkbox-item label,
.radio-item label {
    margin: 0;
    cursor: pointer;
    font-weight: 500;
}

/* ============ PROGRESS BAR ============ */
.progress {
    width: 100%;
    height: 8px;
    background: var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: var(--space-md) 0;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

/* ============ STEPS INDICATOR ============ */
.steps {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-2xl);
    position: relative;
}

.steps::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-border);
    z-index: 0;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
    flex: 1;
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--color-text-muted);
    transition: all var(--transition-base);
}

.step.active .step-number {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.step.completed .step-number {
    background: var(--color-success);
    border-color: var(--color-success);
    color: white;
}

.step-label {
    margin-top: var(--space-sm);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-align: center;
}

/* ============ PREVIEW PANEL ============ */
.preview-panel {
    background: var(--color-bg-alt);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    max-height: 800px;
    overflow-y: auto;
}

.preview-content {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.8;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: var(--color-text-light);
}

/* ============ ANIMATIONS ============ */
@keyframes slideIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

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

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

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

.animate-slide { animation: slideIn var(--transition-base); }
.animate-fade { animation: fadeIn var(--transition-base); }
.animate-pulse { animation: pulse 2s infinite; }

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ============ TABS ============ */
.tabs {
    display: flex;
    gap: var(--space-sm);
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--space-lg);
}

.tab {
    padding: var(--space-md) var(--space-lg);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    font-weight: 600;
    color: var(--color-text-muted);
    transition: all var(--transition-base);
}

.tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

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

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

.table th {
    font-weight: 700;
    color: var(--color-text);
    background: var(--color-bg-alt);
}

.table tr:hover {
    background: var(--color-bg-alt);
}

/* ============ TOAST/NOTIFICATIONS ============ */
.toast {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    animation: slideIn var(--transition-base);
    max-width: 400px;
}

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

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

/* ============ MODAL ============ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn var(--transition-base);
    padding: var(--space-md);
}

.modal {
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideIn var(--transition-base);
}

.modal-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

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

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

/* ============ UTILITIES ============ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.hidden { display: none; }
.w-full { width: 100%; }

/* ============ FOOTER ============ */
.footer {
    background: var(--color-bg-alt);
    padding: var(--space-xl) var(--space-md);
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

.footer a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}

.footer a:hover {
    text-decoration: underline;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    .container {
        padding: 0 var(--space-sm);
    }

    .header {
        padding: var(--space-xl) var(--space-md);
    }

    .steps {
        overflow-x: auto;
        padding-bottom: var(--space-sm);
    }

    .step-label {
        font-size: 0.625rem;
    }

    .preview-panel {
        max-height: 400px;
    }

    .tabs {
        overflow-x: auto;
    }

    .tab {
        padding: var(--space-sm) var(--space-md);
        white-space: nowrap;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .btn {
        padding: 12px 20px;
        font-size: 0.875rem;
    }

    input, select, textarea {
        font-size: 16px; /* Prevents zoom on iOS */
    }

    .card {
        border-radius: var(--radius-lg);
    }

    .modal {
        margin: var(--space-sm);
    }
}

/* ============ PRINT ============ */
@media print {
    body * {
        visibility: hidden;
    }

    .printable, .printable * {
        visibility: visible;
    }

    .printable {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
    }

    .no-print {
        display: none !important;
    }
}