:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #e67e22;
    --text-color: #333;
    --bg-color: #f4f6f9;
    --white: #ffffff;
    --sidebar-width: 250px;
    --header-height: 60px;
    --transition-speed: 0.3s;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--primary-color);
    color: var(--white);
    position: fixed;
    height: 100%;
    overflow-y: auto;
    transition: var(--transition-speed);
    z-index: 1000;
}

.sidebar-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--secondary-color);
    font-size: 1.2rem;
    font-weight: bold;
    letter-spacing: 1px;
}

.sidebar-menu {
    list-style: none;
    padding: 20px 0;
}

.sidebar-menu li {
    padding: 0;
}

.sidebar-menu a {
    display: block;
    padding: 15px 25px;
    color: #ecf0f1;
    text-decoration: none;
    transition: background var(--transition-speed), padding-left var(--transition-speed);
    border-left: 4px solid transparent;
}

.sidebar-menu a:hover, .sidebar-menu a.active {
    background-color: var(--secondary-color);
    border-left-color: var(--accent-color);
    padding-left: 35px;
}

/* Sidebar Submenu */
.sidebar-submenu {
    list-style: none;
    background-color: rgba(0, 0, 0, 0.2);
    display: none;
}

.sidebar-menu li.active .sidebar-submenu,
.sidebar-menu li.open .sidebar-submenu {
    display: block;
}

.sidebar-submenu li a {
    padding-left: 45px;
    font-size: 0.9em;
    border-left: none;
}

.sidebar-submenu li a:hover, 
.sidebar-submenu li a.active {
    padding-left: 55px;
    background-color: rgba(255, 255, 255, 0.05);
    border-left: none;
    color: var(--accent-color);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--transition-speed);
    width: 100%; /* Ensure full width */
}

/* Header */
.top-header {
    height: var(--header-height);
    background-color: var(--white);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30px;
    position: sticky;
    top: 0;
    z-index: 900;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-name {
    font-weight: 600;
}

.btn-logout {
    color: #e74c3c;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    border: 1px solid #e74c3c;
    padding: 5px 15px;
    border-radius: 20px;
    transition: all var(--transition-speed);
}

.btn-logout:hover {
    background-color: #e74c3c;
    color: var(--white);
}

/* Hamburger Toggle Button */
.btn-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.btn-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--secondary-color);
    margin: 5px 0;
    transition: all 0.3s;
}

/* Sidebar Overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-speed);
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* Content Area */
.content-wrapper {
    padding: 30px;
    animation: fadeIn 0.5s ease-in-out;
    width: 100%;
    overflow-x: hidden; /* Prevent horizontal scroll on body */
}

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

h1.page-title {
    font-size: 1.8rem;
    margin-bottom: 25px;
    color: var(--secondary-color);
    border-bottom: 2px solid #ddd;
    padding-bottom: 10px;
    display: inline-block;
}

/* Dashboard Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--white);
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    border-bottom: 4px solid var(--accent-color);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin: 10px 0;
}

.stat-label {
    color: #7f8c8d;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Forms */
.form-container {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    max-width: 100%; /* Changed from 800px fixed max */
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--secondary-color);
}

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background var(--transition-speed);
}

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

.btn-secondary {
    background-color: #95a5a6;
    color: var(--white);
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    text-decoration: none;
    display: inline-block;
    transition: background var(--transition-speed);
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

/* Table Styles */
.table-container {
    background: var(--white);
    padding: 0;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    margin-bottom: 30px;
    overflow-x: auto; /* Allow horizontal scroll */
}

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch; /* Smooth scrolling on iOS */
    margin-bottom: 20px;
}

.table, .table-container table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border-radius: 8px;
    overflow: hidden;
    white-space: nowrap; /* Prevent wrapping in cells causing weird heights */
}

.table th, .table td, .table-container table th, .table-container table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.table th, .table-container table th {
    background-color: var(--secondary-color);
    color: var(--white);
    font-weight: 600;
}

.table tr:hover, .table-container table tr:hover {
    background-color: #f9f9f9;
}

.badge {
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-block; /* Ensure badging respects padding */
}

.badge-success { background-color: #2ecc71; color: white; }
.badge-warning { background-color: #f1c40f; color: #333; }
.badge-danger { background-color: #e74c3c; color: white; }

.btn-sm {
    padding: 5px 10px;
    font-size: 0.8rem;
    margin: 2px; /* Spacing between buttons */
}

.btn-info { background-color: #3498db; color: white; }
.btn-danger { background-color: #e74c3c; color: white; }

/* Image Preview */
.img-preview {
    max-width: 100%; /* Responsive image */
    height: auto;
    margin-top: 10px;
    border-radius: 4px;
    border: 1px solid #ddd;
    padding: 5px;
}

/* =========================================
   MOBILE RESPONSIVE STYLES
   ========================================= */
@media (max-width: 768px) {
    /* Sidebar hidden by default */
    .sidebar {
        transform: translateX(-100%);
        box-shadow: 2px 0 5px rgba(0,0,0,0.1);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    /* Main Content takes full width */
    .main-content {
        margin-left: 0;
    }
    
    /* Show toggle button */
    .btn-toggle {
        display: block;
    }
    
    /* Header adjustments */
    .top-header {
        padding: 0 15px;
    }
    
    .user-info .user-name {
        display: none; /* Hide name on very small screens to save space */
    }
    
    /* Content wrapper adjustments */
    .content-wrapper {
        padding: 15px;
    }
    
    /* Typography adjustments */
    h1.page-title {
        font-size: 1.5rem;
        margin-bottom: 15px;
    }
    
    /* Stats grid */
    .stats-grid {
        grid-template-columns: 1fr; /* Stack vertically */
        gap: 15px;
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    /* Form adjustments */
    .form-container {
        padding: 20px;
    }
    
    /* Table specific mobile optimizations */
    .table th, .table td, .table-container table th, .table-container table td {
        padding: 10px;
        font-size: 0.9rem;
    }
    
    .btn-sm {
        padding: 4px 8px;
        font-size: 0.75rem;
    }
    
    /* Modal adjustments if any exist */
    .modal-content {
        width: 95%;
        margin: 10px auto;
    }
}