/* Basic Reset & Variables */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Saira:ital,wght@0,100..900;1,100..900&display=swap');

:root {
    --dark-bg: #020617;
    --dark-gray: #090f20;
    --card-bg: #212536;
    --light-text: #f0f0f0;
    --light-gray: #bbb;
    --secondary-bg: #2a2a2a;
    --accent-blue: #007bff;
    --accent-blue-hover: #0056b3;
    --transition-speed: 0.3s;
    --border-radius: 5px;
    --border-color: #3b3f54;
    --color-green: #0FF000;
    --yellow: #f4d75c;
    --pink: #cc99cd;
    --green: #1ae1bc;
    --orange: #f08d49;
    --blue: #06a2e2;
    --dark-blue: #197cd1;
    --color-blue: #1673bd;
    --color-pink: #B9375D;

    /* Project Showcase specific colors */
    --project-heading-color: #007bff;
    /* Blue for main headings */
    --prerequisites-icon-color: #28a745;
    /* Green for prerequisites icon */
    --prerequisites-list-icon-color: #f7df1e;
    /* Yellow for JS/React icons */
    --code-bg: #111827;
    /* Very dark background for code blocks */
    --code-border: #2d3748;
    /* Slightly lighter border for code block */
    --code-text: #e5e7eb;
    /* Light gray text for code */
    --code-line-number-bg: #1a1a1a;
    /* Background for line number column */
    --code-line-number-color: #888;
    /* Color for line numbers */
    --sidebar-bg: #2a2a2a;
    /* Same as secondary-bg */
    --sidebar-border: #444;
    --tag-python: #ffd43b;
    --tag-ml: #00BCD4;
    --tag-ai: #8A2BE2;
    --program: #f57c00;
    --tag-orange: #e34f26;
    --color-orange: #f97316;
    --tag-react: #61dafb;
    --tag-webdev: #17a2b8;
    --sidebar-bg: #1a1a1a;
    --color-purple: #5e11e3;
    /* Same as dark-bg for seamless look */
    --sidebar-border: #333;
    --legend-bg: #222;
    --legend-border: #444;
    --dark-green: #009900;

    /* Base Font Sizes */

    --font-p: 14px;
    --font-h1: 1.5rem;
    --font-h2: 1.2rem;
    --font-h3: 1.08rem;
    --font-h4: 1.02rem;
    --font-li: 14px;
    --font-a: 14px;
    --font-i: 13.5px;
    --font-table: 14px;
}


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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Saira", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--dark-bg);
    color: var(--light-text);
    line-height: 1.8;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
}

p {
    font-size: var(--font-p);
    font-weight: 500;
}


a {
    font-size: var(--font-a);
}

li {
    font-size: var(--font-li);
    font-weight: 500;
    color: #cccccc;
}

h1 {
    font-size: var(--font-h1);
    font-weight: 700;
    color: var(--color-pink);
}

h2 {
    font-size: var(--font-h2);
    font-weight: 600;
    color: #DD0303;
}

h4 {
    font-size: var(--font-h4);
    font-weight: 500;
    color: #cccccc;
}

hr {
    border: 0;
    height: 1px;
    background-color: #9ca3af;
    margin-bottom: 30px;
}

.container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    padding: 0 1rem;
}

.navbar {
    background-color: var(--dark-gray);
    /* padding: 5px 0; */
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-text {
    display: flex;
    align-items: center;
    gap: 8px;
}

.typewriter {
    font-family: "Saira", sans-serif;
    white-space: pre;
    position: relative;
    font-optical-sizing: auto;
    font-weight: 500;
    color: #f0f0f0;
    font-size: 1.2rem;
}

.typewriter::after {
    content: "_";
    margin-left: 2px;
    animation: blink 1s steps(1) infinite;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

.nav-links {
    display: flex;
    margin-right: -20px;
}

.nav-links ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    /* gap: 30px; */
}

.nav-links li {
    position: relative;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    padding: 10px 15px;
    border-radius: 5px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-links a:hover {
    color: #DD0303;
}

.main-content-wrapper {
    display: flex;
    flex-direction: column;
    width: 100%;
    margin: 0 auto;
    padding: 30px 0;
}

/* .left-column,
.right-column {
    padding: 0 10px;
} */

.wallpaper-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 1fr;
}

.wallpaper-card {
    background-color: var(--card-bg);
    border-radius: 5px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: box-shadow 0.3s ease, border 0.3s ease;
}

.wallpaper-card:hover {
    border: 1px solid #DD0303;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.wallpaper-card img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.wallpaper-card:hover img {
    transform: scale(1.05);
    /* Scale the image slightly more */
}
.wallpaper-card button {
    position: absolute;
}

.image-wrapper {
    position: relative;
}

.download-btn-overlay {
    position: absolute;
    bottom: 0.7rem;
    right: 0.75rem;
    padding: 0.75rem;
    background-color: rgba(0, 0, 0, 0.3); /* semi-transparent background */
    backdrop-filter: blur(6px); /* applies the blur effect */
    -webkit-backdrop-filter: blur(6px); /* Safari support */
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    color: white;
    font-size: var(--p);
    line-height: 1;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    transition: background-color 0.3s, transform 0.1s;
}


.download-btn-overlay:hover {
    background-color: #007bff;
    transform: scale(1.05);
}

.view-all-btn {
    background-color: transparent;
    color: #f0f0f0;
    padding: 10px 30px;
    border-radius: 5px;
    font-weight: 600;
    font-size: 0.8rem;
    transition: transform 0.1s ease;
    display: inline-block;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    z-index: 1;
    border: 1px solid #DD0303;
}

#view-all-btn-wallpaper {
    display: block;
    margin: 32px auto 0 auto;
}

#view-all-btn-wallpaper::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background-color: red;
    transition: left 0.3s ease;
    z-index: -1;
}

#view-all-btn-wallpaper:hover::before {
    left: 0;
}

.lazy-image {
    background: linear-gradient(90deg,
            #212536 25%,
            #2a2f45 50%,
            #212536 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    min-height: 200px;
    object-fit: cover;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* Smooth fade-in when image loads */
.wallpaper-card img:not(.lazy-image) {
    animation: fadeIn 0.4s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.98);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Optimize image rendering */
.wallpaper-card img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    will-change: opacity;
}

/* View All button improvements */
#view-all-btn-wallpaper {
    transition: all 0.3s ease;
    min-width: 220px;
    text-align: center;
}

/* Loading state for button */
#view-all-btn-wallpaper.loading {
    opacity: 0.7;
    pointer-events: none;
    cursor: not-allowed;
}

/* Spinner animation for loading state */
#view-all-btn-wallpaper.loading::after {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-left: 10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
}

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

/* Smooth card appearance animation */
.wallpaper-card {
    animation: slideUp 0.4s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Performance optimization */
.wallpaper-grid {
    contain: layout style paint;
}

.wallpaper-card {
    contain: layout style paint;
}

/* .wallpaper-card.hidden-wallpaper {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin-top: 0;
    margin-bottom: 0;
    border: none;
    visibility: hidden;
    gap: -30px;
    transition: max-height 0.5s ease, opacity 0.5s ease, padding 0.5s ease, margin 0.5s ease, visibility 0.5s ease;
} */

#scrollUpBtn {
    position: fixed;
    bottom: 36px;
    right: 10px;
    background: none;
    border: none;
    padding: 0;
    width: 40px;
    height: 40px;
    z-index: 999;
    display: none;
    cursor: pointer;
}

.progress-circle {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
    shape-rendering: geometricPrecision;
    backface-visibility: hidden;
    -webkit-font-smoothing: antialiased;
}

.progress-circle .bg1 {
    fill: #000000;
    stroke: #eee;
    stroke-width: 1;
}

.progress-circle .progress {
    fill: none;
    stroke: #DD0303;
    stroke-width: 1;
    stroke-dasharray: 100, 100;
    stroke-linecap: round;
    transition: stroke-dasharray 0.25s linear;
}

svg {
    image-rendering: optimizeQuality;
    text-rendering: geometricPrecision;
}

.arrow-overlay {
    position: absolute;
    top: 55%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.4rem;
    font-family: Arial, Helvetica, sans-serif;
    color: #e5e7eb;
    pointer-events: none;
    cursor: pointer;
}

/* Footer  */
.footer {
    position: relative;
    width: 100%;
    background: var(--dark-bg);
    min-height: 100px;
    padding: 20px 50px;
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-blue) 50%, transparent 50%);
    background-size: 20px 2px;
    animation: slidingBorder 1s linear infinite;
}

@keyframes slidingBorder {
    0% {
        background-position: 0 0;
    }

    100% {
        background-position: 20px 0;
    }
}

.menu {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 10px 0;
    flex-wrap: wrap;
    flex-direction: column;
    gap: 10px;
}

.menu-item {
    list-style: none;
}

.menu-link {
    font-size: var(--p);
    color: #fff;
    margin: 0 10px;
    display: inline-block;
    transition: 0.5s;
    text-decoration: none;
    opacity: 0.75;
    font-weight: 300;
}

.menu-link:hover {
    opacity: 1;
    text-decoration: underline;
}

.footer p {
    color: #ffffff;
    margin: 15px 0 10px 0;
    font-size: var(--p);
    font-weight: 300;
}

@media (min-width: 739px) {
    .container {
        max-width: 739px;
    }

    :root {
        --font-p: 15px;
        --font-h1: 1.6rem;
        --font-h2: 1.28rem;
        --font-h3: 1.15rem;
        --font-h4: 1.05rem;
        --font-li: 15px;
        --font-a: 15px;
        --font-i: 14px;
        --font-table: 15px;
    }

    .wallpaper-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    h2 {
        font-size: var(--font-h2);
        font-weight: 600;
    }

    h4 {
        font-size: var(--font-h4);
        font-weight: 500;
    }

    li {
        font-size: var(--font-li);
    }

    #scrollUpBtn {
        width: 45px;
        height: 45px;
        bottom: 65px;
        right: 24px;
    }
}

/* min-width: 992px */
@media (min-width: 992px) {
    .container {
        max-width: 992px;
    }

    :root {
        --font-p: 16px;
        --font-h1: 1.7rem;
        --font-h2: 1.36rem;
        --font-h3: 1.22rem;
        --font-h4: 1.08rem;
        --font-li: 16px;
        --font-a: 15.5px;
        --font-i: 14.5px;
        --font-table: 15.5px;
    }

    h2 {
        font-size: var(--font-h2);
        font-weight: 600;
    }

    h4 {
        font-size: var(--font-h4);
        font-weight: 500;
    }

    li {
        font-size: var(--font-li);
    }

    #scrollUpBtn {
        width: 45px;
        height: 45px;
        bottom: 65px;
        right: 24px;
    }


}

/* min-width: 1024px */
@media (min-width: 1024px) {
    .container {
        max-width: 1050px;
    }

    :root {
        --font-p: 17px;
        --font-h1: 1.8rem;
        --font-h2: 1.45rem;
        --font-h3: 1.28rem;
        --font-h4: 1.1rem;
        --font-li: 17px;
        --font-a: 16px;
        --font-i: 15px;
        --font-table: 16px;
    }

    h2 {
        font-size: var(--font-h2);
        font-weight: 600;
    }

    h4 {
        font-size: var(--font-h4);
        font-weight: 500;
    }

    li {
        font-size: var(--font-li);
    }

    .wallpaper-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    #scrollUpBtn {
        width: 50px;
        height: 50px;
        bottom: 65px;
        right: 28px;
    }

    .menu {
        flex-direction: row;
    }
}

/* min-width: 1280px */
@media (min-width: 1280px) {
    .container {
        max-width: 1280px;
    }

    :root {
        --font-p: 17.5px;
        --font-h1: 1.82rem;
        --font-h2: 1.52rem;
        --font-h3: 1.32rem;
        --font-h4: 1.15rem;
        --font-li: 18px;
        --font-a: 16.5px;
        --font-i: 15.5px;
        --font-table: 16.5px;
    }

    h2 {
        font-size: var(--font-h2);
        font-weight: 600;
    }

    h4 {
        font-size: var(--font-h4);
        font-weight: 500;
    }

    li {
        font-size: var(--font-li);
    }

    #scrollUpBtn {
        width: 53px;
        height: 53px;
        bottom: 75px;
        right: 32px;
    }
}

/* min-width: 1440px */
@media (min-width: 1440px) {
    .container {
        max-width: 1440px;
    }

    :root {
        --font-p: 18px;
        --font-h1: 1.875rem;
        /* Max out at 1.875rem for h1 */
        --font-h2: 1.55rem;
        --font-h3: 1.39rem;
        --font-h4: 1.2rem;
        --font-li: 18.5px;
        --font-a: 17px;
        --font-i: 16px;
        --font-table: 17px;
    }

    h2 {
        font-size: var(--font-h2);
        font-weight: 600;
    }

    h4 {
        font-size: var(--font-h4);
        font-weight: 500;
    }

    li {
        font-size: var(--font-li);
    }

    .wallpaper-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}