/* =====================================================
   SCHAFFIX - MODERNES DESIGN-SYSTEM
   ===================================================== */

:root {
    /* Primärfarben */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-lighter: #dbeafe;
    
    /* Sekundärfarben */
    --secondary-color: #64748b;
    --secondary-dark: #475569;
    --secondary-light: #94a3b8;
    
    /* Akzentfarben */
    --success-color: #059669;
    --warning-color: #d97706;
    --danger-color: #dc2626;
    --info-color: #0891b2;
    
    /* Neutrale Farben */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Schatten */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
}

/* =====================================================
   BASIS-STYLES
   ===================================================== */

* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    margin: 0;
    padding: 0;
}

/* =====================================================
   NAVIGATION
   ===================================================== */

.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    box-shadow: var(--shadow-lg);
    padding: 1rem 0;
    border-bottom: none;
}

.navbar-brand {
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--white) !important;
    text-decoration: none;
}

.navbar-brand:hover {
    color: var(--primary-lighter) !important;
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    transition: all 0.2s ease;
}

.navbar-nav .nav-link:hover {
    color: var(--white) !important;
    background-color: rgba(255, 255, 255, 0.1);
}

.navbar-nav .nav-link.active {
    color: var(--white) !important;
    background-color: rgba(255, 255, 255, 0.2);
}

/* Einheitliche Navigation ohne Farbverläufe */
.nav-link.nav-dashboard,
.nav-link.nav-objekte,
.nav-link.nav-mieter,
.nav-link.nav-abrechnungen,
.nav-link.nav-dokumente,
.nav-link.nav-statistiken,
.nav-link.nav-verwaltung,
.nav-link.nav-einstellungen {
    background: transparent;
    color: rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
}

.nav-link.nav-dashboard:hover,
.nav-link.nav-objekte:hover,
.nav-link.nav-mieter:hover,
.nav-link.nav-abrechnungen:hover,
.nav-link.nav-dokumente:hover,
.nav-link.nav-statistiken:hover,
.nav-link.nav-verwaltung:hover,
.nav-link.nav-einstellungen:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

.nav-link.nav-dashboard.active,
.nav-link.nav-objekte.active,
.nav-link.nav-mieter.active,
.nav-link.nav-abrechnungen.active,
.nav-link.nav-dokumente.active,
.nav-link.nav-statistiken.active,
.nav-link.nav-verwaltung.active,
.nav-link.nav-einstellungen.active {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    font-weight: 500;
}

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

.card {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    background: var(--white);
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
    border-bottom: 1px solid var(--gray-200);
    padding: 1.25rem 1.5rem;
    font-weight: 600;
    color: var(--gray-800);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background-color: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    padding: 1rem 1.5rem;
}

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

.btn {
    font-weight: 500;
    border-radius: var(--radius);
    padding: 0.5rem 1rem;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

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

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

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

.btn-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #047857 100%);
    color: var(--white);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #b45309 100%);
    color: var(--white);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #b91c1c 100%);
    color: var(--white);
}

.btn-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #0e7490 100%);
    color: var(--white);
}

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

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

.btn-outline-secondary {
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
    background: transparent;
}

.btn-outline-secondary:hover {
    background: var(--secondary-color);
    color: var(--white);
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-lg);
}

/* Custom Button Styles */
.btn-primary-custom {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 25px;
    padding: 8px 20px;
    font-weight: 600;
    transition: all 0.3s ease;
    color: var(--white);
}

.btn-primary-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    color: var(--white);
}

.btn-primary-custom.btn-lg {
    padding: 12px 30px;
    font-size: 1.1rem;
}

/* Footer Styles */
.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer h5 {
    color: var(--white);
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer a {
    color: var(--white) !important;
    text-decoration: none !important;
    transition: all 0.2s ease;
    font-weight: 500;
}

.footer a:hover {
    color: var(--primary-lighter) !important;
    text-decoration: underline !important;
}

.footer .text-white {
    color: var(--white) !important;
}

.footer .text-muted {
    color: rgba(255, 255, 255, 0.7) !important;
}

/* Spezifische Footer-Link-Styles */
.footer ul.list-unstyled li a {
    color: var(--white) !important;
    text-decoration: none !important;
    font-weight: 500;
    display: block;
    padding: 0.25rem 0;
    transition: all 0.2s ease;
}

.footer ul.list-unstyled li a:hover {
    color: var(--primary-lighter) !important;
    text-decoration: underline !important;
    transform: translateX(5px);
}

/* =====================================================
   FORMS
   ===================================================== */

.form-control, .form-select {
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
    font-size: var(--font-size-base);
    transition: all 0.2s ease;
    background-color: var(--white);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    outline: none;
}

.form-label {
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-text {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

.invalid-feedback {
    color: var(--danger-color);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* =====================================================
   TABLES
   ===================================================== */

.table {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.table thead th {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
    border-bottom: 2px solid var(--gray-200);
    font-weight: 600;
    color: var(--gray-800);
    padding: 1rem;
    text-transform: uppercase;
    font-size: var(--font-size-sm);
    letter-spacing: 0.05em;
}

.table tbody td {
    padding: 1rem;
    border-bottom: 1px solid var(--gray-100);
    vertical-align: middle;
}

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

.table-hover tbody tr:hover {
    background-color: var(--primary-lighter);
}

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

.badge {
    font-weight: 500;
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
}

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

.bg-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #047857 100%) !important;
}

.bg-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #b45309 100%) !important;
}

.bg-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #b91c1c 100%) !important;
}

.bg-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #0e7490 100%) !important;
}

.bg-secondary {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%) !important;
}

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

.alert {
    border: none;
    border-radius: var(--radius-lg);
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.alert-success {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
}

.alert-warning {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: var(--warning-color);
    border-left: 4px solid var(--warning-color);
}

.alert-danger {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: var(--danger-color);
    border-left: 4px solid var(--danger-color);
}

.alert-info {
    background: linear-gradient(135deg, #cffafe 0%, #a5f3fc 100%);
    color: var(--info-color);
    border-left: 4px solid var(--info-color);
}

/* =====================================================
   BREADCRUMB
   ===================================================== */

.breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 2rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: var(--gray-400);
    font-weight: bold;
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.breadcrumb-item a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.breadcrumb-item.active {
    color: var(--gray-600);
    font-weight: 600;
}

/* =====================================================
   UTILITIES
   ===================================================== */

.text-primary { color: var(--primary-color) !important; }
.text-secondary { color: var(--secondary-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-danger { color: var(--danger-color) !important; }
.text-info { color: var(--info-color) !important; }

.bg-primary { background-color: var(--primary-color) !important; }
.bg-secondary { background-color: var(--secondary-color) !important; }
.bg-success { background-color: var(--success-color) !important; }
.bg-warning { background-color: var(--warning-color) !important; }
.bg-danger { background-color: var(--danger-color) !important; }
.bg-info { background-color: var(--info-color) !important; }

.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow { box-shadow: var(--shadow) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.shadow-xl { box-shadow: var(--shadow-xl) !important; }

.rounded-sm { border-radius: var(--radius-sm) !important; }
.rounded { border-radius: var(--radius) !important; }
.rounded-md { border-radius: var(--radius-md) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-xl { border-radius: var(--radius-xl) !important; }

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

@media (max-width: 768px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .card-header {
        padding: 1rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .btn-group .btn {
        width: auto;
        margin-bottom: 0;
    }
    
    .table-responsive {
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow);
    }
    
    .navbar-nav {
        margin-top: 1rem;
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem 1rem;
        border-radius: var(--radius);
        margin-bottom: 0.25rem;
    }
}

@media (max-width: 576px) {
    .row {
        margin-left: -0.5rem;
        margin-right: -0.5rem;
    }
    
    .col, [class*="col-"] {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .btn-group .btn {
        border-radius: var(--radius) !important;
        margin-bottom: 0.25rem;
    }
}

/* =====================================================
   ANIMATIONS
   ===================================================== */

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

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

/* =====================================================
   LOADING STATES
   ===================================================== */

.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--gray-300);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

/* =====================================================
   CUSTOM COMPONENTS
   ===================================================== */

.stats-card {
    background: linear-gradient(135deg, var(--white) 0%, var(--gray-50) 100%);
    border-left: 4px solid var(--primary-color);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.stats-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.stats-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.stats-label {
    color: var(--gray-600);
    font-weight: 500;
    text-transform: uppercase;
    font-size: var(--font-size-sm);
    letter-spacing: 0.05em;
}

.feature-card {
    text-align: center;
    padding: 2rem 1.5rem;
    border-radius: var(--radius-xl);
    background: var(--white);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: var(--white);
    font-size: 1.5rem;
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--gray-600);
    line-height: 1.6;
}

/* =====================================================
   PRINT STYLES
   ===================================================== */

@media print {
    .navbar,
    .btn,
    .card-header,
    .breadcrumb {
        display: none !important;
    }
    
    .card {
        border: 1px solid var(--gray-300);
        box-shadow: none;
    }
    
    .table {
        box-shadow: none;
    }
    
    body {
        background: var(--white);
        color: var(--gray-900);
    }
}