/* Modern Professional CSS for Master Data Management */

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #059669;
    --warning-color: #d97706;
    --danger-color: #dc2626;
    --info-color: #0891b2;
    --light-color: #f8fafc;
    --dark-color: #1e293b;
    --sidebar-width: 280px;
    --header-height: 64px;
}

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

body {
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--light-color);
    color: var(--dark-color);
    line-height: 1.5;
    font-size: 14px;
}

/* Layout Structure */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, #1e293b 0%, #334155 100%);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: transform 0.3s ease;
    box-shadow: 4px 0 15px rgba(0, 0, 0, 0.1);
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.2);
}

.sidebar-header h4 {
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-header .icon {
    background: var(--primary-color);
    padding: 0.5rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Sidebar Navigation */
.sidebar-nav {
    padding: 1rem 0;
}

.nav-section-title {
    color: white;
    font-size: 0.8rem;
}

.admin-section-title {
    color: white !important;
    font-size: 0.8rem !important;
    font-weight: 600 !important;
}

.sidebar-nav .nav-item {
    margin: 0.25rem 1rem;
}

.sidebar-nav .nav-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-weight: 500;
    font-size: 0.875rem;
}

.sidebar-nav .nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateX(4px);
}

.sidebar-nav .nav-link.active {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.sidebar-nav .nav-link i {
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
}

/* User Info in Sidebar */
.sidebar-user {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.2);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: white;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.user-details h6 {
    margin: 0;
    font-weight: 600;
}

.user-details small {
    color: rgba(255, 255, 255, 0.7);
}

/* Main Content Area */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    min-height: 100vh;
    background-color: var(--light-color);
    transition: margin-left 0.3s ease;
}

.main-content.expanded {
    margin-left: 0;
}

/* Top Header */
.top-header {
    background: white;
    height: var(--header-height);
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 999;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.page-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark-color);
    margin: 0;
}

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

/* Content Area */
.content-area {
    padding: 1.5rem;
    min-height: calc(100vh - var(--header-height));
}

/* Modern Cards */
.card {
    background: white;
    border-radius: 12px;
    border: none;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    margin-bottom: 1.5rem;
}

.card:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid #f1f5f9;
    padding: 1.5rem 1.5rem 1rem 1.5rem;
    border-radius: 12px 12px 0 0;
}

.card-header h5 {
    font-weight: 600;
    font-size: 1rem;
    color: var(--dark-color);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-body {
    padding: 1.5rem;
}

/* Dashboard Stats Cards */
.stats-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: 16px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.stats-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 120px;
    height: 120px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(40px, -40px);
}

.stats-card .stats-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stats-card .stats-label {
    font-size: 1rem;
    opacity: 0.9;
    margin: 0;
}

.stats-card .stats-icon {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 2rem;
    opacity: 0.3;
}

/* Quick Actions Grid */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.quick-action-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    text-decoration: none;
    color: var(--dark-color);
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.quick-action-card:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.15);
}

.quick-action-card .action-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem auto;
    font-size: 1.5rem;
    color: white;
}

.quick-action-card h6 {
    font-weight: 600;
    margin: 0;
}

/* Modern Buttons */
.btn {
    border-radius: 8px;
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    border: none;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), #1e40af);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    color: 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: white;
    transform: translateY(-1px);
}

/* Modern Forms */
.form-control, .form-select {
    border-radius: 8px;
    border: 2px solid #e5e7eb;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.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: 500;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

/* Modern Tables */
.table {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    font-size: 0.875rem;
}

.table thead th {
    background: #f8fafc;
    border: none;
    font-weight: 600;
    color: var(--secondary-color);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    padding: 0.875rem;
}

.table tbody tr {
    transition: background-color 0.2s ease;
}

.table tbody tr:hover {
    background-color: #f8fafc;
}

.table tbody td {
    border: none;
    border-bottom: 1px solid #f1f5f9;
    padding: 0.875rem;
    vertical-align: middle;
}

/* Login Page Styles */
.login-container {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-card {
    background: white;
    border-radius: 20px;
    padding: 3rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.login-card .brand {
    margin-bottom: 2rem;
}

.login-card .brand-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem auto;
    font-size: 2rem;
    color: white;
}

.login-card h2 {
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.login-card .subtitle {
    color: var(--secondary-color);
    margin-bottom: 2rem;
}

/* Alerts */
.alert {
    border-radius: 12px;
    border: none;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
}

.alert-success {
    background: linear-gradient(135deg, #dcfce7, #bbf7d0);
    color: var(--success-color);
}

.alert-danger {
    background: linear-gradient(135deg, #fef2f2, #fecaca);
    color: var(--danger-color);
}

.alert-info {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    color: var(--info-color);
}

.alert-warning {
    background: linear-gradient(135deg, #fffbeb, #fed7aa);
    color: var(--warning-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .content-area {
        padding: 1rem;
    }
    
    .quick-actions {
        grid-template-columns: 1fr;
    }
    
    .login-card {
        padding: 2rem;
    }
}

/* Sidebar Toggle Button */
.sidebar-toggle {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    font-size: 1.2rem;
    transition: all 0.2s ease;
}

.sidebar-toggle:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

/* Mobile menu toggle */
.mobile-toggle {
    display: none;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 0.5rem;
    font-size: 1.2rem;
}

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

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Utility Classes */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-soft {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

.border-radius-lg {
    border-radius: 16px;
}

/* Loading states */
.loading-overlay {
    position: fixed;
    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: 9999;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f4f6;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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