/* Modern CRM System - Clean Design Framework */
:root {
    /* Light Theme Variables */
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #64748b;
    --success-color: #22c55e;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --text-color: #334155;
    --muted-color: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    
    /* Light Theme Backgrounds */
    --bg-body: #f1f5f9;
    --bg-card: #ffffff;
    --bg-header: #ffffff;
    --bg-sidebar: #ffffff;
    --bg-user-menu: #f8fafc;
    --bg-table-header: linear-gradient(135deg, #f8fafc, #e2e8f0);
    --bg-hover: #f8fafc;
    --bg-form: #ffffff;
    
    /* Light Theme Text */
    --text-primary: #334155;
    --text-secondary: #64748b;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    
    /* Light Theme Borders */
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    --border-dark: #94a3b8;
    
}



* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    background-color: var(--bg-body);
    line-height: 1.6;
}

/* Layout */
.app-container {
    display: grid;
    grid-template-rows: auto 1fr;
    min-height: 100vh;
}

/* Header */
.header {
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(10px);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary-color);
    text-decoration: none;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary-color), var(--info-color));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.mobile-menu-toggle:hover {
    background: var(--bg-hover);
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .logo {
        flex: 1;
    }
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    background: var(--bg-user-menu);
    border: 1px solid var(--border-light);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

/* Sidebar */
.sidebar {
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-light);
    width: 280px;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    padding-top: 4rem;
    box-shadow: var(--shadow-md);
    z-index: 40;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-light);
    background: var(--bg-table-header);
}

.sidebar-nav {
    padding: 1rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    margin-bottom: 0.25rem;
    transition: all 0.2s ease;
    font-weight: 500;
}

.nav-item:hover {
    background: var(--bg-hover);
    color: var(--primary-color);
}

.nav-item.active {
    background: linear-gradient(135deg, var(--primary-color), var(--info-color));
    color: white;
}

.nav-item i {
    font-size: 1.125rem;
    width: 20px;
    text-align: center;
}

/* Main Content */
.main-content {
    margin-left: 280px;
    padding: 2rem;
    min-height: calc(100vh - 4rem);
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    gap: 2rem;
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.page-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: all 0.2s ease;
}

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

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-light);
    background: var(--bg-table-header);
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.2s ease;
    background: var(--bg-form);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

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

.form-text {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    box-shadow: var(--shadow-sm);
}

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

.btn-secondary {
    background: var(--bg-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.btn-secondary:hover {
    background: var(--bg-hover);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #16a34a);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #dc2626);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #d97706);
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* Tables */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
}

.table th {
    background: var(--bg-table-header);
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-light);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.875rem;
    vertical-align: middle;
}

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

.table-actions {
    display: flex;
    gap: 0.5rem;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Remove any pseudo-element icons from badges */
.badge::before,
.badge::after {
    display: none !important;
    content: none !important;
}

.badge-success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success-color);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.badge-info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info-color);
}

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    margin-bottom: 1rem;
    font-weight: 500;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border-color: rgba(34, 197, 94, 0.3);
    color: #166534;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
    color: #7f1d1d;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
    color: #92400e;
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    color: #1e3a8a;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.flex {
    display: flex;
}

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

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

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

.justify-center {
    justify-content: center;
}

.gap-2 {
    gap: 1rem;
}

.gap-4 {
    gap: 2rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.mb-8 {
    margin-bottom: 2rem;
}

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

.text-sm {
    font-size: 0.875rem;
}

.text-muted {
    color: var(--muted-color);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .header-content {
        padding: 1rem;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .table {
        font-size: 0.75rem;
    }
    
    .table th, .table td {
        padding: 0.5rem;
    }
}

/* Loading */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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


/* Print styles */
@media print {
    .sidebar, .header, .page-actions {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0;
        padding: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #000;
    }
}