/* Mobile-First Responsive Design with Relative Units */
/* This CSS file is designed to enhance the mobile experience of 
the welcome page, ensuring that it remains functional and visually 
appealing across a wide range of devices. */

:root {
    --spacing-unit: 1rem;
    --font-size-base: 16px;
}

/* Base improvements */
html, body {
    overflow-x: hidden;
    max-width: 100%;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Typography - scales with browser zoom */
body {
    font-size: clamp(14px, 2vw, 16px);
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: 1.3;
}

p {
    margin-bottom: 1em;
}

.masthead {
        padding: 3rem 1rem 1.5rem !important;
}

/* Navigation adjustments for mobile */
@media (max-width: 991px) {
    .masthead {
        padding: 5rem 1rem 1.5rem !important;
    }

    .navbar {
        padding: 2rem 0.5rem !important;
    }
    
    .navbar-brand {
        font-size: clamp(1rem, 4vw, 1.5rem);
    }
    
    .navbar-collapse {
        background-color: rgba(255, 255, 255, 0.95);
        border-radius: 0.25rem;
        margin-top: 0.5rem;
    }
    
    .nav-link {
        padding: 0.5em 1em !important;
        font-size: 1em;
    }
}

/* Masthead adjustments for mobile */
@media (max-width: 866px) {
    .masthead {
        padding: 5rem 1rem 1.5rem !important;
	}
    
    .masthead h2 {
        font-size: clamp(1.2rem, 5vw, 2rem) !important;
        margin-top: 1em;
    }
    
    .masthead img {
        max-width: 90%;
        height: auto;
    }
    
    .col-lg-8 {
        max-width: 100% !important;
        flex: 0 0 100% !important;
        padding: 0.5em !important;
    }
    
    .container.px-4.px-lg-5 {
        padding-left: 0.5rem !important;
        padding-right: 0.5rem !important;
    }
    
    .divider {
        max-width: 100%;
        margin: 1em auto;
    }
}

/* Extra small devices (phones) */
@media (max-width: 576px) {
    .masthead {
        padding: 5rem 1rem 1.5rem !important;
        min-height: auto !important;
        overflow-y: visible !important;
    }
    
    .masthead h2 {
        font-size: clamp(1rem, 4vw, 1.5rem) !important;
    }
    
    .masthead > div {
        min-height: auto !important;
    }
    
    /* Search form - stack on mobile */
    .col-9, .col-3 {
        flex: 0 0 100% !important;
        max-width: 100% !important;
        margin-bottom: 0.5em;
        padding: 0.25em !important;
    }
    
    .input-group {
        margin-bottom: 1em !important;
        display: flex;
        flex-direction: column;
        min-width: 15rem;
        gap: 0.5em;
    }
    
    .input-group > .form-control,
    .input-group > .form-select,
    .input-group > .btn {
        border-radius: 0.375rem !important;
    }
    
    .form-control, .btn {
        font-size: 1em;
        padding: 0.75em !important;
        min-height: 44px;
        width: 100%;
    }
    
    .input-group > .form-control,
    .input-group > .form-control-plaintext,
    .input-group > .custom-select,
    .input-group > .custom-file {
    width: 100% !important;
    }


    .input-group-append {
        width: 100%;
    }
    
    .input-group-append .btn {
        width: 100%;
    }
    
    /* Alert box - flexible padding */
    .alert {
        margin: 1em 0 !important;
        padding: 1em !important;
        font-size: 0.95em;
    }
    
    .alert h5 {
        font-size: 1.1em;
        margin-bottom: 0.5em;
    }
    
    .alert ul {
        margin: 0.5em 0 !important;
        padding-left: 1.5em;
    }
    
    .alert li {
        margin-bottom: 0.25em;
        font-size: 0.95em;
    }
    
    /* About section */
    .page-section {
        padding: 3em 1em !important;
    }
    
    .page-section h2 {
        font-size: clamp(1.3rem, 5vw, 2rem) !important;
        margin-bottom: 0.5em;
    }
    
    .page-section h3 {
        font-size: clamp(1.1rem, 4vw, 1.5rem) !important;
        margin-top: 1em;
        margin-bottom: 0.5em;
    }
    
    .text-white-75, .txt_desc {
        font-size: 1em !important;
        line-height: 1.6;
    }
    
    .text-left {
        text-align: left;
    }
    
    /* Links */
    a {
        word-break: break-word;
        display: inline-block;
    }
    
    /* Statistics box */
    .col-12.m-4 > div {
        padding: 1.5em !important;
        font-size: 0.95em;
    }
}

/* Small tablets or landscpae phone*/
@media (min-width: 577px) and (max-width: 768px) {
    .masthead {
        padding: 5rem 1.5rem 1.5rem !important;
    }
    
    .masthead h2 {
        font-size: clamp(1.5rem, 5vw, 2rem) !important;
    }
    
    .col-9 {
        flex: 0 0 65% !important;
        max-width: 65% !important;
    }
    
    .col-3 {
        flex: 0 0 35% !important;
        max-width: 35% !important;
    }
    
    .page-section {
        padding: 4em 1.5rem !important;
    }
}

/* Touch-friendly improvements */
@media (hover: none) {
    .btn, a.btn, .nav-link {
        min-height: 44px;
        padding: 0.75em 1em !important;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
    
    .btn:active, a.btn:active {
        opacity: 0.8;
    }
}

/* Footer adjustments */
@media (max-width: 768px) {
    footer {
        padding: 2em 1rem !important;
        font-size: 0.95em;
    }
}

/* Prevent layout shift on font resize */
* {
    box-sizing: border-box;
}

/* Ensure proper spacing scales */
.row {
    row-gap: 1em;
}

.mb-3, .mb-4, .mb-5 {
    margin-bottom: 1em !important;
}

.mt-0, .mt-4 {
    margin-top: 1em !important;
}

.text-white-80 {
    color: rgba(255, 255, 255, 0.8);
}

.text-white-75 {
    color: rgba(255, 255, 255, 0.75);
}