/**
 * ============================================
 * medDevice Design System
 * Umfassendes Theme Pattern für strukturierte, moderne UIs
 * ============================================
 */

/* ============================================
   CSS VARIABLEN - Zentrales Design-Token System
   ============================================ */

:root {
    /* === FARBEN === */
    /* Primärfarben */
    --primary: #3498db;
    --primary-light: #5dade2;
    --primary-dark: #2980b9;
    --primary-hover: #2c81ba;
    
    /* Sekundärfarben */
    --secondary: #26404a;
    --secondary-light: #34545f;
    --secondary-dark: #1a2f38;
    
    /* Semantische Farben */
    --success: #28a745;
    --success-light: #34ce57;
    --success-dark: #1e7e34;
    
    --warning: #ffc107;
    --warning-light: #ffcd38;
    --warning-dark: #e0a800;
    
    --danger: #dc3545;
    --danger-light: #e4606d;
    --danger-dark: #bd2130;
    
    --info: #17a2b8;
    --info-light: #3ab4c7;
    --info-dark: #117a8b;
    
    /* Neutrale Farben - Light Mode */
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #fafbfc;
    
    --surface: #ffffff;
    --surface-hover: #f6f8fa;
    --surface-active: #eef1f4;
    
    --border: #e1e4e8;
    --border-light: #eaecef;
    --border-dark: #d1d5da;
    
    --text-primary: #24292e;
    --text-secondary: #586069;
    --text-muted: #6a737d;
    --text-disabled: #959da5;
    
    /* === ABSTÄNDE === */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* === BORDER RADIUS === */
    --radius-xs: 2px;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-round: 50%;
    
    /* === SCHATTEN === */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-xl: 0 8px 24px rgba(0,0,0,0.15);
    
    /* === TRANSITIONS === */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
    
    /* === TYPOGRAFIE === */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --font-family-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
    
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-base: 14px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-xxl: 24px;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.25;
    --line-height-base: 1.5;
    --line-height-relaxed: 1.75;
    
    /* === Z-INDEX === */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Dark Mode Variablen */
[data-theme="dark"] {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #1c2128;
    
    --surface: #161b22;
    --surface-hover: #1c2128;
    --surface-active: #21262d;
    
    --border: #30363d;
    --border-light: #21262d;
    --border-dark: #484f58;
    
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --text-disabled: #484f58;
    
    --primary: #58a6ff;
    --primary-light: #79c0ff;
    --primary-dark: #1f6feb;
    
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.5);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.6);
    --shadow-xl: 0 8px 24px rgba(0,0,0,0.7);
}

/* ============================================
   BASE STYLES
   ============================================ */

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   LAYOUT CONTAINER
   ============================================ */

.container-fluid {
    width: 100%;
    padding-right: var(--spacing-md);
    padding-left: var(--spacing-md);
    margin-right: auto;
    margin-left: auto;
}

.container {
    max-width: 1200px;
    margin-right: auto;
    margin-left: auto;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: calc(var(--spacing-md) * -0.5);
    margin-left: calc(var(--spacing-md) * -0.5);
}

.col {
    flex: 1 0 0%;
    padding-right: calc(var(--spacing-md) * 0.5);
    padding-left: calc(var(--spacing-md) * 0.5);
}

.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }
.col-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
.col-12 { flex: 0 0 100%; max-width: 100%; }

/* ============================================
   SECTION STYLES - Wie im Bild
   ============================================ */

.section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border);
}

.section-icon {
    width: 24px;
    height: 24px;
    color: var(--primary);
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.section-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--primary);
    margin: 0;
    flex: 1;
}

/* ============================================
   FORM STYLES - Wie im Bild
   ============================================ */

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

.form-group.form-row {
    display: flex;
    gap: var(--spacing-md);
}

.form-group.form-row > * {
    flex: 1;
}

.form-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.form-label i {
    font-size: var(--font-size-base);
    color: var(--text-muted);
}

.form-control {
    display: block;
    width: 100%;
    padding: 10px 12px;
    font-size: var(--font-size-base);
    font-family: inherit;
    line-height: var(--line-height-base);
    color: var(--text-primary);
    background: var(--surface);
    background-clip: padding-box;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
    opacity: 1;
}

.form-control:disabled,
.form-control[readonly] {
    background-color: var(--surface-hover);
    color: var(--text-disabled);
    opacity: 0.7;
    cursor: not-allowed;
}

/* Textarea */
textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

/* Select */
select.form-control,
select {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    cursor: pointer;
    padding-right: 32px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236a737d' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 12px;
}

/* Form Control Sizes */
.form-control-sm {
    padding: 6px 10px;
    font-size: var(--font-size-sm);
}

.form-control-lg {
    padding: 12px 16px;
    font-size: var(--font-size-md);
}

/* Input Icons */
.form-group-with-icon {
    position: relative;
}

.form-group-with-icon .form-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

.form-group-with-icon .form-control {
    padding-left: 38px;
}

/* Form Text Helper */
.form-text {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* Validation States */
.form-control.is-valid {
    border-color: var(--success);
}

.form-control.is-valid:focus {
    border-color: var(--success);
    box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.1);
}

.form-control.is-invalid {
    border-color: var(--danger);
}

.form-control.is-invalid:focus {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.valid-feedback,
.invalid-feedback {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.valid-feedback {
    color: var(--success);
}

.invalid-feedback {
    color: var(--danger);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 10px 16px;
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-tight);
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    vertical-align: middle;
    user-select: none;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-primary {
    color: #fff;
    background: var(--primary);
    border-color: var(--primary);
}

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

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

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

.btn-success {
    color: #fff;
    background: var(--success);
    border-color: var(--success);
}

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

.btn-danger {
    color: #fff;
    background: var(--danger);
    border-color: var(--danger);
}

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

.btn-warning {
    color: #000;
    background: var(--warning);
    border-color: var(--warning);
}

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

.btn-info {
    color: #fff;
    background: var(--info);
    border-color: var(--info);
}

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

/* Button Sizes */
.btn-sm {
    padding: 6px 12px;
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: 12px 24px;
    font-size: var(--font-size-md);
}

/* Button Block */
.btn-block {
    display: flex;
    width: 100%;
}

/* ============================================
   CARDS
   ============================================ */

.card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
}

.card-header {
    padding: var(--spacing-lg);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0;
}

.card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.card-body {
    flex: 1 1 auto;
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ============================================
   BADGES
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 4px 10px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: var(--radius-xl);
}

.badge-primary { background: var(--primary); color: #fff; }
.badge-success { background: var(--success); color: #fff; }
.badge-warning { background: var(--warning); color: #000; }
.badge-danger { background: var(--danger); color: #fff; }
.badge-info { background: var(--info); color: #fff; }
.badge-secondary { background: var(--text-muted); color: #fff; }

.badge-light {
    background: var(--surface-hover);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
    position: relative;
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border: 1px solid transparent;
    border-left: 4px solid;
    border-radius: var(--radius-md);
}

.alert-success {
    background: #e8f5e9;
    border-color: var(--success);
    color: #1b5e20;
}

.alert-danger {
    background: #f8d7da;
    border-color: var(--danger);
    color: #721c24;
}

.alert-warning {
    background: #fff3cd;
    border-color: var(--warning);
    color: #856404;
}

.alert-info {
    background: #e3f2fd;
    border-color: var(--info);
    color: #01579b;
}

[data-theme="dark"] .alert-success {
    background: rgba(40, 167, 69, 0.15);
    color: #56d364;
}

[data-theme="dark"] .alert-danger {
    background: rgba(220, 53, 69, 0.15);
    color: #f85149;
}

[data-theme="dark"] .alert-warning {
    background: rgba(255, 193, 7, 0.15);
    color: #f0ad4e;
}

[data-theme="dark"] .alert-info {
    background: rgba(23, 162, 184, 0.15);
    color: #58a6ff;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

/* Spacing */
.m-0 { margin: 0 !important; }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.ml-0 { margin-left: 0 !important; }
.mr-0 { margin-right: 0 !important; }

.m-1 { margin: var(--spacing-xs) !important; }
.m-2 { margin: var(--spacing-sm) !important; }
.m-3 { margin: var(--spacing-md) !important; }
.m-4 { margin: var(--spacing-lg) !important; }
.m-5 { margin: var(--spacing-xl) !important; }

.mt-1 { margin-top: var(--spacing-xs) !important; }
.mt-2 { margin-top: var(--spacing-sm) !important; }
.mt-3 { margin-top: var(--spacing-md) !important; }
.mt-4 { margin-top: var(--spacing-lg) !important; }
.mt-5 { margin-top: var(--spacing-xl) !important; }

.mb-1 { margin-bottom: var(--spacing-xs) !important; }
.mb-2 { margin-bottom: var(--spacing-sm) !important; }
.mb-3 { margin-bottom: var(--spacing-md) !important; }
.mb-4 { margin-bottom: var(--spacing-lg) !important; }
.mb-5 { margin-bottom: var(--spacing-xl) !important; }

.p-0 { padding: 0 !important; }
.p-1 { padding: var(--spacing-xs) !important; }
.p-2 { padding: var(--spacing-sm) !important; }
.p-3 { padding: var(--spacing-md) !important; }
.p-4 { padding: var(--spacing-lg) !important; }
.p-5 { padding: var(--spacing-xl) !important; }

/* Text Alignment */
.text-left { text-align: left !important; }
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }

/* Text Colors */
.text-primary { color: var(--primary) !important; }
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-info { color: var(--info) !important; }
.text-muted { color: var(--text-muted) !important; }

/* Font Weights */
.fw-normal { font-weight: var(--font-weight-normal) !important; }
.fw-medium { font-weight: var(--font-weight-medium) !important; }
.fw-semibold { font-weight: var(--font-weight-semibold) !important; }
.fw-bold { font-weight: var(--font-weight-bold) !important; }

/* Display */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }

/* Flex */
.flex-row { flex-direction: row !important; }
.flex-column { flex-direction: column !important; }
.align-items-center { align-items: center !important; }
.align-items-start { align-items: flex-start !important; }
.align-items-end { align-items: flex-end !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-between { justify-content: space-between !important; }
.justify-content-end { justify-content: flex-end !important; }
.gap-1 { gap: var(--spacing-xs) !important; }
.gap-2 { gap: var(--spacing-sm) !important; }
.gap-3 { gap: var(--spacing-md) !important; }
.gap-4 { gap: var(--spacing-lg) !important; }

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .col-6,
    .col-4,
    .col-3,
    .col-8 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .form-group.form-row {
        flex-direction: column;
    }
    
    .section {
        padding: var(--spacing-md);
    }
    
    .section-header {
        flex-wrap: wrap;
    }
}