/* ===== CSS RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - Chocolate Theme */
    --primary-brown: #8B4513;
    --dark-brown: #5D2F0A;
    --light-brown: #D2B48C;
    --cream: #F5F5DC;
    --gold: #FFD700;
    --white: #FFFFFF;
    --light-gray: #F8F9FA;
    --gray: #6C757D;
    --dark-gray: #343A40;
    --success: #28A745;
    --warning: #FFC107;
    --danger: #DC3545;
    --info: #17A2B8;
    
    /* Typography */
    --font-family: 'Poppins', 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-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Layout */
    --sidebar-width: 280px;
    --header-height: 70px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.15);
}

body {
    font-family: var(--font-family);
    background-color: var(--light-gray);
    color: var(--dark-gray);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== HEADER STYLES ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: linear-gradient(135deg, var(--primary-brown), var(--dark-brown));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    box-shadow: var(--shadow);
    z-index: 1000;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.menu-toggle {
    background: none;
    border: none;
    color: var(--white);
    font-size: var(--font-size-xl);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: background-color 0.3s ease;
}

.menu-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo i {
    font-size: var(--font-size-2xl);
    color: var(--gold);
}

.logo h1 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.profile-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--gold);
}

.user-name {
    font-weight: 500;
}

.logout-btn {
    background: none;
    border: none;
    color: var(--white);
    font-size: var(--font-size-lg);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: background-color 0.3s ease;
}

.logout-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* ===== SIDEBAR STYLES ===== */
.sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    background-color: var(--white);
    box-shadow: var(--shadow);
    transform: translateX(0);
    transition: transform 0.3s ease;
    z-index: 999;
    overflow-y: auto;
}

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

.sidebar-nav {
    padding: var(--spacing-lg) 0;
}

.nav-list {
    list-style: none;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background-color: var(--light-gray);
    border-left-color: var(--primary-brown);
}

.nav-item.active {
    background-color: var(--cream);
    border-left-color: var(--primary-brown);
    color: var(--primary-brown);
    font-weight: 500;
}

.nav-item i {
    font-size: var(--font-size-lg);
    width: 20px;
    text-align: center;
}

.nav-item span {
    font-size: var(--font-size-base);
}

/* ===== MAIN CONTENT STYLES ===== */
.main-content {
    margin-left: var(--sidebar-width);
    margin-top: var(--header-height);
    padding: var(--spacing-xl);
    min-height: calc(100vh - var(--header-height));
    transition: margin-left 0.3s ease;
}

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

.content-section {
    display: none;
}

.content-section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.section-header h2 {
    font-size: var(--font-size-3xl);
    color: var(--primary-brown);
    font-weight: 600;
}

.section-header p {
    color: var(--gray);
    margin-top: var(--spacing-xs);
}

/* ===== BUTTON STYLES ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--dark-brown);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
    background-color: var(--dark-gray);
}

.btn-warning {
    background-color: var(--warning);
    color: var(--dark-gray);
}

.btn-warning:hover {
    background-color: #e0a800;
}

/* ===== STATS GRID ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.stat-card {
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: var(--white);
    background: linear-gradient(135deg, var(--primary-brown), var(--dark-brown));
}

.stat-info h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-brown);
    margin-bottom: var(--spacing-xs);
}

.stat-info p {
    color: var(--gray);
    font-size: var(--font-size-sm);
}

/* ===== CHARTS GRID ===== */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.chart-container {
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
}

.chart-container h3 {
    color: var(--primary-brown);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-xl);
}

/* ===== TABLE STYLES ===== */
.table-container {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    background-color: var(--primary-brown);
    color: var(--white);
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.data-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid #eee;
    font-size: var(--font-size-sm);
}

.data-table tr:hover {
    background-color: var(--light-gray);
}

.status-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    font-weight: 500;
    text-transform: uppercase;
}

.status-low { background-color: #ffebee; color: var(--danger); }
.status-normal { background-color: #e8f5e8; color: var(--success); }
.status-pending { background-color: #fff3cd; color: #856404; }
.status-progress { background-color: #cce5ff; color: #004085; }
.status-completed { background-color: #d4edda; color: #155724; }

/* ===== ANALYTICS STYLES ===== */
.analytics-controls {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: wrap;
}

.analytics-section {
    margin-bottom: var(--spacing-2xl);
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
}

.analytics-section h3 {
    color: var(--primary-brown);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.analytics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.analytics-card {
    background-color: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-brown);
}

.analytics-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.analytics-header h4 {
    color: var(--dark-gray);
    font-size: var(--font-size-base);
    margin: 0;
}

.trend-indicator {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.trend-indicator.positive {
    background-color: #d4edda;
    color: var(--success);
}

.trend-indicator.negative {
    background-color: #f8d7da;
    color: var(--danger);
}

.analytics-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-brown);
    margin-bottom: var(--spacing-xs);
}

.analytics-subtitle {
    color: var(--gray);
    font-size: var(--font-size-sm);
}

.stock-movement-table {
    margin-top: var(--spacing-xl);
}

.stock-movement-table h4 {
    color: var(--primary-brown);
    margin-bottom: var(--spacing-md);
}

.performance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.performance-card {
    background-color: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
}

.performance-card h4 {
    color: var(--primary-brown);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.performance-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.performance-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background-color: var(--white);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--primary-brown);
}

.performance-item-name {
    font-weight: 500;
    color: var(--dark-gray);
}

.performance-item-value {
    font-weight: 600;
    color: var(--primary-brown);
}

.performance-item.slow {
    border-left-color: var(--warning);
}

.performance-item.slow .performance-item-value {
    color: var(--warning);
}

/* ===== TASK STYLES ===== */
.task-filters {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--primary-brown);
    background-color: transparent;
    color: var(--primary-brown);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: var(--font-size-sm);
}

.filter-btn.active,
.filter-btn:hover {
    background-color: var(--primary-brown);
    color: var(--white);
}

.tasks-container {
    display: grid;
    gap: var(--spacing-lg);
}

.task-card {
    background-color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary-brown);
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.task-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-brown);
}

.task-meta {
    display: flex;
    gap: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--gray);
    margin-top: var(--spacing-sm);
}

/* ===== MODAL STYLES ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid #eee;
}

.modal-header h3 {
    color: var(--primary-brown);
    font-size: var(--font-size-xl);
}

.close {
    font-size: var(--font-size-2xl);
    cursor: pointer;
    color: var(--gray);
    transition: color 0.3s ease;
}

.close:hover {
    color: var(--danger);
}

.modal form {
    padding: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--dark-gray);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid #ddd;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-brown);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid #ddd;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
}

.modal-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    padding-top: var(--spacing-lg);
    border-top: 1px solid #eee;
}

/* ===== SETTINGS STYLES ===== */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
}

.setting-card {
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
}

.setting-card h3 {
    color: var(--primary-brown);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-xl);
}

/* ===== REPORT STYLES ===== */
.report-controls {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: wrap;
}

.report-summary {
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    margin-top: var(--spacing-xl);
}

/* ===== MOBILE NAVIGATION ===== */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    border-top: 1px solid #eee;
    padding: var(--spacing-sm) 0;
    z-index: 1000;
}

.mobile-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.3s ease;
    color: var(--gray);
    font-size: var(--font-size-xs);
}

.mobile-nav-item.active,
.mobile-nav-item:hover {
    color: var(--primary-brown);
}

.mobile-nav-item i {
    font-size: var(--font-size-lg);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
    }
    
    .header {
        padding: 0 var(--spacing-md);
    }
    
    .main-content {
        padding: var(--spacing-lg);
        padding-bottom: 80px; /* Space for mobile nav */
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .section-header h2 {
        font-size: var(--font-size-2xl);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .stat-card {
        padding: var(--spacing-lg);
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .chart-container {
        padding: var(--spacing-lg);
    }
    
    .finance-grid,
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    .data-table {
        min-width: 600px;
    }
    
    .task-filters {
        justify-content: center;
    }
    
    .report-controls {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .mobile-nav {
        display: flex;
    }
    
    .user-name {
        display: none;
    }
    
    .modal-content {
        width: 95%;
        margin: var(--spacing-md);
    }
    
    .modal-actions {
        flex-direction: column;
    }
    
    .btn {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .header-right .user-profile {
        display: none;
    }
    
    .logo h1 {
        display: none;
    }
    
    .main-content {
        padding: var(--spacing-md);
    }
    
    .stat-card {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .stat-icon {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-xl);
    }
    
    .chart-container,
    .finance-card,
    .setting-card,
    .report-summary {
        padding: var(--spacing-md);
    }
    
    .data-table th,
    .data-table td {
        padding: var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--primary-brown); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-muted { color: var(--gray); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.rounded { border-radius: var(--border-radius); }
.rounded-lg { border-radius: var(--border-radius-lg); }

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

/* ===== LOADING ANIMATION ===== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(139, 69, 19, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-brown);
    animation: spin 1s ease-in-out infinite;
}

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

/* ===== PRINT STYLES ===== */
@media print {
    .header,
    .sidebar,
    .mobile-nav,
    .btn,
    .modal {
        display: none !important;
    }
    
    .main-content {
        margin: 0;
        padding: 0;
    }
    
    .content-section {
        display: block !important;
        page-break-after: always;
    }
    
    .content-section:last-child {
        page-break-after: avoid;
    }
}