/* CRM System - Modern UI/UX Styles */

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    --danger-gradient: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    --dark-gradient: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    
    --navbar-height: 70px;
    --sidebar-width: 280px;
    
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);
    --shadow-xl: 0 16px 64px rgba(0,0,0,0.20);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Global Styles */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Cards */
.card-modern {
    background: white;
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    overflow: hidden;
}

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

.card-modern .card-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding: 1.5rem;
}

.card-modern .card-body {
    padding: 1.5rem;
}

/* Buttons */
.btn-modern {
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn-modern:hover::before {
    left: 100%;
}

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

.btn-primary-modern:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: white;
}

.btn-success-modern {
    background: var(--success-gradient);
    color: white;
}

.btn-success-modern:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: white;
}

.btn-warning-modern {
    background: var(--warning-gradient);
    color: #8b4513;
}

.btn-warning-modern:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: #8b4513;
}

.btn-danger-modern {
    background: var(--danger-gradient);
    color: #721c24;
}

.btn-danger-modern:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: #721c24;
}

/* Override Bootstrap buttons with modern styles */
.btn {
    border: none;
    border-radius: 8px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    text-decoration: none;
}

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

/* Primary Button */
.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    color: white;
}

/* Secondary Button */
.btn-secondary {
    background: linear-gradient(135deg, #6c757d 0%, #495057 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(108, 117, 125, 0.3);
}

.btn-secondary:hover {
    box-shadow: 0 8px 25px rgba(108, 117, 125, 0.4);
    color: white;
}

/* Success Button */
.btn-success {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
}

.btn-success:hover {
    box-shadow: 0 8px 25px rgba(40, 167, 69, 0.4);
    color: white;
}

/* Warning Button */
.btn-warning {
    background: linear-gradient(135deg, #ffc107 0%, #fd7e14 100%);
    color: #212529;
    box-shadow: 0 4px 15px rgba(255, 193, 7, 0.3);
}

.btn-warning:hover {
    box-shadow: 0 8px 25px rgba(255, 193, 7, 0.4);
    color: #212529;
}

/* Danger Button */
.btn-danger {
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(220, 53, 69, 0.3);
}

.btn-danger:hover {
    box-shadow: 0 8px 25px rgba(220, 53, 69, 0.4);
    color: white;
}

/* Info Button */
.btn-info {
    background: linear-gradient(135deg, #17a2b8 0%, #138496 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(23, 162, 184, 0.3);
}

.btn-info:hover {
    box-shadow: 0 8px 25px rgba(23, 162, 184, 0.4);
    color: white;
}

/* Light Button */
.btn-light {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    color: #212529;
    box-shadow: 0 4px 15px rgba(248, 249, 250, 0.3);
    border: 1px solid #dee2e6;
}

.btn-light:hover {
    box-shadow: 0 8px 25px rgba(248, 249, 250, 0.4);
    color: #212529;
}

/* Dark Button */
.btn-dark {
    background: linear-gradient(135deg, #343a40 0%, #212529 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(52, 58, 64, 0.3);
}

.btn-dark:hover {
    box-shadow: 0 8px 25px rgba(52, 58, 64, 0.4);
    color: white;
}

/* Outline Buttons */
.btn-outline-primary {
    background: transparent;
    color: #667eea;
    border: 2px solid #667eea;
    box-shadow: none;
}

.btn-outline-primary:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: #667eea;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-outline-secondary {
    background: transparent;
    color: #6c757d;
    border: 2px solid #6c757d;
    box-shadow: none;
}

.btn-outline-secondary:hover {
    background: linear-gradient(135deg, #6c757d 0%, #495057 100%);
    color: white;
    border-color: #6c757d;
    box-shadow: 0 4px 15px rgba(108, 117, 125, 0.3);
}

.btn-outline-success {
    background: transparent;
    color: #28a745;
    border: 2px solid #28a745;
    box-shadow: none;
}

.btn-outline-success:hover {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    border-color: #28a745;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
}

.btn-outline-warning {
    background: transparent;
    color: #ffc107;
    border: 2px solid #ffc107;
    box-shadow: none;
}

.btn-outline-warning:hover {
    background: linear-gradient(135deg, #ffc107 0%, #fd7e14 100%);
    color: #212529;
    border-color: #ffc107;
    box-shadow: 0 4px 15px rgba(255, 193, 7, 0.3);
}

.btn-outline-danger {
    background: transparent;
    color: #dc3545;
    border: 2px solid #dc3545;
    box-shadow: none;
}

.btn-outline-danger:hover {
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
    color: white;
    border-color: #dc3545;
    box-shadow: 0 4px 15px rgba(220, 53, 69, 0.3);
}

.btn-outline-info {
    background: transparent;
    color: #17a2b8;
    border: 2px solid #17a2b8;
    box-shadow: none;
}

.btn-outline-info:hover {
    background: linear-gradient(135deg, #17a2b8 0%, #138496 100%);
    color: white;
    border-color: #17a2b8;
    box-shadow: 0 4px 15px rgba(23, 162, 184, 0.3);
}

/* Small buttons */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    border-radius: 6px;
}

/* Large buttons */
.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 10px;
}

/* Button groups */
.btn-group .btn {
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
}

.btn-group .btn:last-child {
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
}

/* Loading state */
.btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    margin: auto;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Forms */
.form-control-modern {
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1rem;
    transition: var(--transition);
    background: white;
}

.form-control-modern:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    background: white;
}

.form-label-modern {
    font-weight: 500;
    color: #495057;
    margin-bottom: 0.5rem;
}

/* Tables */
.table-modern {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table-modern thead th {
    background: var(--primary-gradient);
    color: white;
    border: none;
    font-weight: 600;
    padding: 1rem;
}

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

.table-modern tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

.table-modern tbody td {
    padding: 1rem;
    border-color: rgba(0,0,0,0.05);
}

/* Alerts */
.alert-modern {
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    position: relative;
    overflow: hidden;
}

.alert-modern::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: currentColor;
}

.alert-success-modern {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
    border-left: 4px solid #28a745;
}

.alert-warning-modern {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    color: #856404;
    border-left: 4px solid #ffc107;
}

.alert-danger-modern {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border-left: 4px solid #dc3545;
}

.alert-info-modern {
    background: linear-gradient(135deg, #d1ecf1 0%, #bee5eb 100%);
    color: #0c5460;
    border-left: 4px solid #17a2b8;
}

/* Badges */
.badge-modern {
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    font-size: 0.75rem;
}

.badge-primary-modern {
    background: var(--primary-gradient);
    color: white;
}

.badge-success-modern {
    background: var(--success-gradient);
    color: white;
}

.badge-warning-modern {
    background: var(--warning-gradient);
    color: #8b4513;
}

.badge-danger-modern {
    background: var(--danger-gradient);
    color: #721c24;
}

/* Loading States */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.spinner-modern {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Animations */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.slide-in-left {
    animation: slideInLeft 0.5s ease-out;
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

.slide-in-right {
    animation: slideInRight 0.5s ease-out;
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .card-modern .card-header,
    .card-modern .card-body {
        padding: 1rem;
    }
    
    .btn-modern {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    .table-modern {
        font-size: 0.875rem;
    }
    
    .table-modern thead th,
    .table-modern tbody td {
        padding: 0.75rem 0.5rem;
    }
}

@media (max-width: 576px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .card-modern .card-header,
    .card-modern .card-body {
        padding: 0.75rem;
    }
}

/* Utility Classes */
.text-shadow {
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.glass-effect {
    background: rgba(255,255,255,0.25);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.18);
}

.hover-lift {
    transition: var(--transition);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.gradient-border {
    position: relative;
    background: white;
    border-radius: var(--border-radius);
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 2px;
    background: var(--primary-gradient);
    border-radius: inherit;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
}

/* Print Styles */
@media print {
    .sidebar-modern,
    .navbar-modern,
    .footer-modern,
    .btn-modern {
        display: none !important;
    }
    
    .card-modern {
        box-shadow: none;
        border: 1px solid #dee2e6;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
}