/**
 * FlowBridge CRM - Backend UI Design System
 * Basierend auf Landing-Page-Design
 * 
 * Einheitliches Design-System für das gesamte Backend
 */

/* ============================================
   1. CSS VARIABLEN (Farben, Spacing, Typografie)
   ============================================ */

:root {
    /* Primärfarben - FlowBridge Brand */
    --flow-primary: #4229ff;
    --flow-primary-2: #4642fc;
    --flow-primary-rgb: 66, 41, 255;
    
    /* Hintergrundfarben - Light Mode */
    --flow-bg-body: #f8f9fa;
    --flow-bg-body-2: #ffffff;
    --flow-bg-body-3: #f4f7fa;
    --flow-bg-card: #ffffff;
    
    /* Textfarben - Light Mode */
    --flow-text-heading: #031811;
    --flow-text-body: rgba(3, 24, 17, 0.7);
    --flow-text-muted: rgb(99, 102, 108);
    --flow-text-light: rgba(3, 24, 17, 0.5);
    
    /* Border & Shadows */
    --flow-border-color: rgba(66, 41, 255, 0.1);
    --flow-border-radius: 16px;
    --flow-border-radius-sm: 12px;
    --flow-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --flow-shadow-lg: 0 10px 30px rgba(66, 41, 255, 0.15);
    
    /* Spacing */
    --flow-spacing-xs: 0.5rem;
    --flow-spacing-sm: 1rem;
    --flow-spacing-md: 1.5rem;
    --flow-spacing-lg: 2rem;
    --flow-spacing-xl: 3rem;
    
    /* Typografie */
    --flow-font-family: "Inter", sans-serif;
    --flow-font-size-base: 1rem;
    --flow-font-size-sm: 0.875rem;
    --flow-font-size-lg: 1.125rem;
    --flow-font-weight-normal: 400;
    --flow-font-weight-medium: 500;
    --flow-font-weight-semibold: 600;
    --flow-font-weight-bold: 700;
    
    /* Transitions */
    --flow-transition: all 0.3s ease;
}

/* Dark Mode Variablen */
.theme-dark-active {
    --flow-bg-body: #0d1117;
    --flow-bg-body-2: #151526;
    --flow-bg-body-3: #161b22;
    --flow-bg-card: #232333;
    
    --flow-text-heading: #ffffff;
    --flow-text-body: rgba(255, 255, 255, 0.8);
    --flow-text-muted: rgba(255, 255, 255, 0.7);
    --flow-text-light: rgba(255, 255, 255, 0.5);
    
    --flow-border-color: rgba(255, 255, 255, 0.1);
    --flow-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --flow-shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* ============================================
   2. GLOBALE GRUNDLAGEN
   ============================================ */

body {
    font-family: var(--flow-font-family);
    background-color: var(--flow-bg-body);
    color: var(--flow-text-heading);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.flow-app-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    flex: 1;
}

.flow-container {
    flex: 1;
    padding: var(--flow-spacing-lg) 0;
    background-color: var(--flow-bg-body);
}

/* ============================================
   3. BUTTONS (.btn-flow, .btn-flow-primary)
   ============================================ */

.btn-flow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--flow-font-family);
    font-weight: var(--flow-font-weight-semibold);
    font-size: var(--flow-font-size-base);
    padding: 0.75rem 1.5rem;
    border-radius: var(--flow-border-radius-sm);
    border: 2px solid transparent;
    transition: var(--flow-transition);
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
}

.btn-flow:hover {
    box-shadow: var(--flow-shadow);
    text-decoration: none;
}

.btn-flow-primary {
    background: linear-gradient(135deg, var(--flow-primary) 0%, var(--flow-primary-2) 100%);
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(66, 41, 255, 0.3);
}

.btn-flow-primary:hover {
    background: linear-gradient(135deg, #3a1fe6 0%, #3e1ae6 100%);
    color: #ffffff;
    box-shadow: 0 6px 20px rgba(66, 41, 255, 0.4);
}

.btn-flow-secondary {
    background-color: var(--flow-bg-card);
    color: var(--flow-text-heading);
    border-color: var(--flow-border-color);
}

.btn-flow-secondary:hover {
    background-color: var(--flow-bg-body-3);
    color: var(--flow-text-heading);
}

.btn-flow-outline {
    background-color: transparent;
    color: var(--flow-primary);
    border-color: var(--flow-primary);
}

.btn-flow-outline:hover {
    background-color: var(--flow-primary);
    color: #ffffff;
}

/* Button Sizes */
.btn-flow-sm {
    padding: 0.5rem 1rem;
    font-size: var(--flow-font-size-sm);
}

.btn-flow-lg {
    padding: 1rem 2rem;
    font-size: var(--flow-font-size-lg);
}

/* Button mit Icon */
.btn-flow i,
.btn-flow .bi {
    font-size: 1.1em;
}

/* ============================================
   4. CARDS (.card-flow)
   ============================================ */

.card-flow {
    background-color: var(--flow-bg-card);
    border-radius: var(--flow-border-radius);
    box-shadow: var(--flow-shadow);
    border: 1px solid var(--flow-border-color);
    overflow: hidden;
    transition: var(--flow-transition);
    height: 100%;
}

.card-flow:hover {
    box-shadow: var(--flow-shadow-lg);
}

.card-flow-header {
    padding: var(--flow-spacing-md);
    border-bottom: 2px solid var(--flow-border-color);
    background-color: var(--flow-bg-card);
}

.card-flow-title {
    font-size: 1.35rem;
    font-weight: var(--flow-font-weight-bold);
    color: var(--flow-text-heading);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card-flow-title i,
.card-flow-title .bi {
    color: var(--flow-primary);
    font-size: 1.5rem;
}

.theme-dark-active .card-flow-title i,
.theme-dark-active .card-flow-title .bi {
    color: #ffffff;
}

.card-flow-body {
    padding: var(--flow-spacing-md);
    color: var(--flow-text-body);
}

.card-flow-footer {
    padding: var(--flow-spacing-md);
    border-top: 1px solid var(--flow-border-color);
    background-color: var(--flow-bg-body-3);
}

/* ============================================
   5. TABELLEN (.table-flow)
   ============================================ */

.table-flow {
    width: 100%;
    margin-bottom: 0;
    border-collapse: separate;
    border-spacing: 0;
}

.table-flow thead th {
    background-color: var(--flow-bg-body-3);
    color: var(--flow-text-heading);
    font-weight: var(--flow-font-weight-semibold);
    padding: 1rem;
    border-bottom: 2px solid var(--flow-border-color);
    vertical-align: middle;
    position: sticky;
    top: 0;
    z-index: 10;
}

.table-flow tbody td {
    padding: 1rem;
    color: var(--flow-text-body);
    border-bottom: 1px solid var(--flow-border-color);
    vertical-align: middle;
}

.table-flow tbody tr {
    transition: var(--flow-transition);
}

.table-flow tbody tr:hover {
    background-color: rgba(66, 41, 255, 0.05);
}

.theme-dark-active .table-flow tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.table-flow-responsive {
    overflow-x: auto;
    border-radius: var(--flow-border-radius-sm);
}

/* ============================================
   6. FORM CONTROLS (.form-control-flow)
   ============================================ */

.form-control-flow,
.form-control-flow:focus,
.form-select-flow,
.form-select-flow:focus {
    background-color: var(--flow-bg-card);
    border: 2px solid var(--flow-border-color);
    border-radius: var(--flow-border-radius-sm);
    color: var(--flow-text-heading);
    padding: 0.75rem 1rem;
    font-family: var(--flow-font-family);
    font-size: var(--flow-font-size-base);
    transition: var(--flow-transition);
}

.form-control-flow:focus,
.form-select-flow:focus {
    border-color: var(--flow-primary);
    box-shadow: 0 0 0 0.25rem rgba(66, 41, 255, 0.25);
    outline: 0;
    background-color: var(--flow-bg-card);
    color: var(--flow-text-heading);
}

.form-control-flow::placeholder {
    color: var(--flow-text-muted);
    opacity: 0.7;
}

.form-label-flow {
    font-weight: var(--flow-font-weight-semibold);
    color: var(--flow-text-heading);
    margin-bottom: 0.5rem;
}

/* Checkbox & Radio */
.form-check-flow .form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    margin-top: 0.125rem;
    background-color: var(--flow-bg-card);
    border: 2px solid var(--flow-border-color);
    cursor: pointer;
    border-radius: 0.375rem;
}

.form-check-flow .form-check-input:checked {
    background-color: var(--flow-primary);
    border-color: var(--flow-primary);
}

.form-check-flow .form-check-input:focus {
    border-color: var(--flow-primary);
    box-shadow: 0 0 0 0.25rem rgba(66, 41, 255, 0.25);
}

.form-check-flow .form-check-label {
    color: var(--flow-text-heading);
    margin-left: 0.5rem;
    cursor: pointer;
}

/* ============================================
   7. BADGES
   ============================================ */

.badge-flow {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.375rem 0.75rem;
    font-size: var(--flow-font-size-sm);
    font-weight: var(--flow-font-weight-semibold);
    border-radius: var(--flow-border-radius-sm);
    line-height: 1;
}

.badge-flow-primary {
    background: linear-gradient(135deg, var(--flow-primary) 0%, var(--flow-primary-2) 100%);
    color: #ffffff;
}

.badge-flow-secondary {
    background-color: var(--flow-bg-body-3);
    color: var(--flow-text-heading);
    border: 1px solid var(--flow-border-color);
}

.badge-flow-success {
    background-color: #198754;
    color: #ffffff;
}

.badge-flow-warning {
    background-color: #f59e0b;
    color: #ffffff;
}

.badge-flow-danger {
    background-color: #dc3545;
    color: #ffffff;
}

.badge-flow-info {
    background-color: #0dcaf0;
    color: #ffffff;
}

/* Zone Badge */
.badge-flow-zone {
    background-color: var(--flow-bg-body-3);
    color: var(--flow-text-heading);
    border: 1px solid var(--flow-border-color);
    padding: 0.5rem 1rem;
    border-radius: var(--flow-border-radius-sm);
    transition: var(--flow-transition);
    text-decoration: none;
    display: inline-block;
}

.badge-flow-zone:hover {
    background-color: var(--flow-primary);
    color: #ffffff;
    border-color: var(--flow-primary);
    text-decoration: none;
}

.badge-flow-zone.active {
    background: linear-gradient(135deg, var(--flow-primary) 0%, var(--flow-primary-2) 100%);
    color: #ffffff;
    border-color: transparent;
}

/* ============================================
   8. TYPOGRAPHY & SPACING
   ============================================ */

.flow-heading-1 {
    font-size: 2.5rem;
    font-weight: var(--flow-font-weight-bold);
    background: linear-gradient(135deg, var(--flow-primary) 0%, var(--flow-primary-2) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
}

.theme-dark-active .flow-heading-1 {
    background: linear-gradient(135deg, #ffffff 0%, rgba(255, 255, 255, 0.8) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.flow-heading-2 {
    font-size: 2rem;
    font-weight: var(--flow-font-weight-bold);
    color: var(--flow-text-heading);
    margin: 0 0 var(--flow-spacing-sm) 0;
}

.flow-heading-3 {
    font-size: 1.5rem;
    font-weight: var(--flow-font-weight-semibold);
    color: var(--flow-text-heading);
    margin: 0 0 var(--flow-spacing-sm) 0;
}

.flow-text-muted {
    color: var(--flow-text-muted);
    font-size: var(--flow-font-size-sm);
}

.flow-text-body {
    color: var(--flow-text-body);
    line-height: 1.6;
}

/* Breadcrumb */
.flow-breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0.5rem 0;
}

.flow-breadcrumb-item a {
    color: var(--flow-text-muted);
    text-decoration: none;
    transition: var(--flow-transition);
}

.flow-breadcrumb-item a:hover {
    color: var(--flow-primary);
}

.flow-breadcrumb-item.active {
    color: var(--flow-text-heading);
}

/* ============================================
   9. ALERT BANNER
   ============================================ */

.alert-flow {
    border-radius: var(--flow-border-radius-sm);
    border-left: 4px solid;
    padding: var(--flow-spacing-md);
    margin-bottom: var(--flow-spacing-md);
}

.alert-flow-warning {
    background-color: #fff3cd;
    border-left-color: #f59e0b;
    color: #856404;
}

.theme-dark-active .alert-flow-warning {
    background-color: rgba(255, 193, 7, 0.2);
    border-left-color: #ffc107;
    color: #ffc107;
}

.alert-flow-success {
    background-color: #d1e7dd;
    border-left-color: #198754;
    color: #0a3622;
}

.theme-dark-active .alert-flow-success {
    background-color: rgba(25, 135, 84, 0.2);
    border-left-color: #198754;
    color: #75b798;
}

.alert-flow-info {
    background-color: #cff4fc;
    border-left-color: #0dcaf0;
    color: #055160;
}

.theme-dark-active .alert-flow-info {
    background-color: rgba(13, 202, 240, 0.2);
    border-left-color: #0dcaf0;
    color: #5dd0f0;
}

.alert-flow-danger {
    background-color: #f8d7da;
    border-left-color: #dc3545;
    color: #721c24;
}

.theme-dark-active .alert-flow-danger {
    background-color: rgba(220, 53, 69, 0.2);
    border-left-color: #dc3545;
    color: #f1aeb5;
}

/* ============================================
   10. UTILITY CLASSES
   ============================================ */

/* Spacing */
.flow-mt-sm { margin-top: var(--flow-spacing-sm); }
.flow-mt-md { margin-top: var(--flow-spacing-md); }
.flow-mt-lg { margin-top: var(--flow-spacing-lg); }
.flow-mb-sm { margin-bottom: var(--flow-spacing-sm); }
.flow-mb-md { margin-bottom: var(--flow-spacing-md); }
.flow-mb-lg { margin-bottom: var(--flow-spacing-lg); }
.flow-p-sm { padding: var(--flow-spacing-sm); }
.flow-p-md { padding: var(--flow-spacing-md); }
.flow-p-lg { padding: var(--flow-spacing-lg); }

/* Flex Utilities */
.flow-flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--flow-spacing-sm);
}

.flow-flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--flow-spacing-sm);
}

/* ============================================
   11. FOOTER (.flow-footer)
   ============================================ */

.flow-footer {
    background-color: var(--flow-bg-body-2);
    border-top: 1px solid var(--flow-border-color);
    padding: var(--flow-spacing-lg) 0;
    margin-top: auto;
}

.flow-footer-content {
    padding: 0;
}

.flow-footer-left {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.flow-footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.flow-footer-logo {
    height: 28px;
    width: auto;
    opacity: 0.9;
}

.flow-footer-brand-name {
    font-size: 1.125rem;
    font-weight: var(--flow-font-weight-bold);
    color: var(--flow-text-heading);
    letter-spacing: -0.02em;
}

.flow-footer-copyright {
    font-size: var(--flow-font-size-sm);
    color: var(--flow-text-muted);
    line-height: 1.5;
}

.flow-footer-right {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.flow-footer-links {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 1.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.flow-footer-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--flow-text-muted);
    text-decoration: none;
    font-size: var(--flow-font-size-sm);
    font-weight: var(--flow-font-weight-medium);
    transition: var(--flow-transition);
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
}

.flow-footer-link i {
    font-size: 1rem;
    opacity: 0.8;
}

.flow-footer-link:hover {
    color: var(--flow-primary);
    background-color: rgba(66, 41, 255, 0.05);
    text-decoration: none;
}

.flow-footer-link:hover i {
    opacity: 1;
}

.theme-dark-active .flow-footer-link:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

/* ============================================
   12. RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .flow-heading-1 {
        font-size: 2rem;
    }
    
    .flow-heading-2 {
        font-size: 1.5rem;
    }
    
    .btn-flow {
        padding: 0.625rem 1.25rem;
        font-size: var(--flow-font-size-sm);
    }
    
    .card-flow-header,
    .card-flow-body {
        padding: var(--flow-spacing-sm);
    }
    
    .flow-footer {
        padding: var(--flow-spacing-md) 0;
    }
    
    .flow-footer-left {
        margin-bottom: var(--flow-spacing-md);
        text-align: center;
    }
    
    .flow-footer-right {
        justify-content: center;
    }
    
    .flow-footer-links {
        justify-content: center;
        gap: 1rem;
    }
    
    .flow-footer-link {
        padding: 0.375rem 0.625rem;
        font-size: 0.8125rem;
    }
}