* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

a {
    color: #ff3700;
}

.red {
    color: red;
}

/* Basic Responsive Image Styles */
.img-responsive {
    display: block;           /* Removes extra space under image */
    max-width: 100%;          /* Image will never exceed its container */
    height: auto;             /* Maintain aspect ratio */
    width: auto;              /* Prevent forced stretching */
    margin: 0 auto;           /* Center images by default */
}

/* Optional Variations */
.img-responsive.rounded {
    border-radius: 6px;       /* Slightly rounded corners */
}

.img-responsive.circle {
    border-radius: 50%;       /* Circular images (for profile pics) */
}

.img-responsive.cover {
    object-fit: cover;        /* Cover the container (for fixed aspect ratio containers) */
    width: 100%;             /* Full width of container */
    height: 100%;            /* Full height of container */
}

.img-responsive.contain {
    object-fit: contain;      /* Fit entire image within container */
}

/* For Retina/HiDPI displays */
.img-responsive.high-dpi {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Lazy loading styles */
.img-responsive.lazy {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.img-responsive.lazy.loaded {
    opacity: 1;
}

/* Responsive image in flex container */
.flex-container .img-responsive {
    align-self: center;      /* Proper alignment in flex containers */
}

/* Media queries for specific adjustments */
@media (max-width: 768px) {
    .img-responsive-mobile {
        width: 100% !important; /* Force full width on mobile */
        height: auto !important;
    }
}

/* For images that should maintain aspect ratio in fluid containers */
.img-responsive.fluid {
    width: 100%;
    height: auto;
}

/* For background images (alternative approach) */
.responsive-bg {
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.mobile-header {
    display: none;
    background-color: #252d34;
    color: white;
    padding: 15px;
    text-align: center;
}

.mobile-header .logo {
    height: 40px;
}

.mobile-menu-btn {
    position: absolute;
    left: 15px;
    top: 15px;
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
}

/* Main Content Layout */
.main-content {
    display: flex;
    flex: 1;
}

/* Left Column - Navigation */
.left-column {
    width: 330px;
    background-color: #252d34;
    color: white;
    padding: 20px 0;
    transition: transform 0.3s ease;
}

.nav-title {
    padding: 0 20px 20px;
    border-bottom: 1px solid #5a626e;
    color: #ff3700;
    margin-bottom: 20px;
}

.nav-title img {
    max-width: 100%;
}

.nav-menu {
    list-style: none;
    overflow-y: auto;
    max-height: calc(100vh - 120px);
}

.nav-item {
    padding: 12px 20px;
    cursor: pointer;
    transition: background-color 0.3s;
    border-left: 4px solid transparent;
}

.nav-item:hover {
    background-color: #fff;
    color: #ff3700;
}

.nav-item.active {
    background-color: #fff;
    color: #ff3700;
    border-left: 4px solid #ff3700;
}

/* Right Column - Content */
.right-column {
    flex: 1;
    padding: 30px;
    background-color: white;
    overflow-y: auto;
}

.content-title {
    font-size: 24px;
    margin-bottom: 30px;
    color: #252d34;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.help-content {
    display: none;
}

.help-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

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

.help-content h2 {
    color: #252d34;
    margin-bottom: 20px;
    font-size: 22px;
}

.help-content p {
    margin-bottom: 15px;
}

.help-content ol, .help-content ul {
    margin-bottom: 20px;
    padding-left: 20px;
}

.help-content li {
    margin-bottom: 10px;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .mobile-header {
        display: block;
    }
    
    .left-column {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        z-index: 1000;
        transform: translateX(-100%);
    }
    
    .left-column.active {
        transform: translateX(0);
    }
    
    .right-column {
        padding: 20px 15px;
    }

    .help-content.active {
        padding: 0 20px;
    }
    
    .content-title {
        font-size: 20px;
    }
    
    .help-content h2 {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .right-column {
        padding: 15px 10px;
    }
    
    .help-content ol, .help-content ul {
        padding-left: 15px;
    }
}