@import url('https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400;500;700&display=swap');

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --key-color: #e8eaed;
    --key-hover: #d9dee4;
    --key-active: #c8cfd8;
    --key-border: #b0b8c1;
    --key-text: #2c3e50;
    --body-bg: #edf0f4;
    --section-bg: #f5f7fa;
    --highlight: #5d8aa8;
    --highlight-secondary: #445d70;
    --accent: #a5c8e1;
    --fractal-purple: #8e44ad;
    --fractal-purple-light: #a569bd;
    --fractal-blue: #5d8aa8;
}

/* Basic layout fixes */
html, body {
    overflow-x: hidden;
    max-width: 100%;
    position: relative;
}

body {
    font-family: 'Roboto Mono', monospace;
    line-height: 1.6;
    color: var(--key-text);
    background-color: var(--body-bg);
    cursor: default;
    transition: background-color 0.5s;
    overflow-x: hidden;
    background-image: linear-gradient(135deg, #d9dde2 0%, #edf0f4 50%, #c8cfd8 100%);
}

body:before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--highlight), var(--accent), var(--highlight-secondary));
    z-index: 1000;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
    position: relative;
    box-shadow: inset 0 0 90px rgba(44, 62, 80, 0.15);
}

h1, h2, h3 {
    margin-bottom: 20px;
}

h2 {
    position: relative;
    display: inline-block;
}

h2:after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -5px;
    height: 3px;
    width: 0;
    background: linear-gradient(90deg, var(--highlight), var(--accent));
    transition: width 0.6s ease;
}

h2.typing:after {
    width: 100%;
}

/* Metal surface effect */
.metal-surface {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        linear-gradient(135deg,
        rgba(255,255,255,0) 0%,
        rgba(255,255,255,0.2) 25%,
        rgba(255,255,255,0) 50%,
        rgba(255,255,255,0.2) 75%,
        rgba(255,255,255,0) 100%);
    background-size: 200% 200%;
    pointer-events: none;
    animation: metal-shimmer 15s infinite linear;
    opacity: 0.7;
    z-index: 2;
}

@keyframes metal-shimmer {
    0% { background-position: 0% 0%; }
    100% { background-position: 200% 200%; }
}

/* Mechanical key styling */
.key {
    background-color: var(--key-color);
    border: 2px solid var(--key-border);
    border-radius: 6px;
    color: var(--key-text);
    box-shadow: 0 6px 0 rgba(0, 0, 0, 0.15), 0 0 10px rgba(52, 152, 219, 0.1);
    transition: all 0.12s;
    transform-style: preserve-3d;
    transform: translateZ(0);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(5px);
}

.key:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(255, 255, 255, 0.8);
}

.key:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(0, 0, 0, 0.1);
}

.key:hover {
    background-color: var(--key-hover);
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.15), 0 0 15px rgba(52, 152, 219, 0.2);
    transform: translateY(2px);
}

.key.active {
    transform: translateY(4px);
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.15), 0 0 5px rgba(52, 152, 219, 0.3);
    background-color: var(--key-active);
}

/* Header styles */
header {
    background-color: rgba(229, 231, 233, 0.9);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(52, 152, 219, 0.2);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--highlight);
    position: relative;
    overflow: hidden;
    z-index: 101;
    white-space: nowrap;
}

.logo:after {
    content: '_';
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--key-text);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.3s;
    background-color: var(--key-color);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.nav-links a:hover {
    border-color: var(--highlight);
    box-shadow: 0 2px 5px rgba(52, 152, 219, 0.2);
}

.nav-links a:active {
    transform: translateY(2px);
}

/* Hamburger Menu Icon */
.hamburger {
    display: none;
    cursor: pointer;
    z-index: 101;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px 0;
    background-color: var(--key-text);
    transition: all 0.3s ease-in-out;
}

/* Fractal canvas styles */
.fractal-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.4; /* Increased from 0.3 for stronger effect */
    pointer-events: none;
    z-index: 1;
    mix-blend-mode: multiply; /* Blend with background */
}
#hero-fractal,
#contact-fractal {
    animation: cloudDrift 60s ease-in-out infinite alternate;
}

@keyframes cloudDrift {
    0% { transform: scale(1) translateX(0); }
    100% { transform: scale(1.1) translateX(-20px); }
}

/* Hero section */
.hero {
    text-align: center;
    padding: 150px 0 120px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #b5b8bc 0%, #c5c8cc 50%, #a5a8ac 100%);
}

.hero:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(93, 138, 168, 0.1), transparent 70%);
    animation: pulse 4s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 0.3; }
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    position: relative;
    color: #2c3e50;
    z-index: 2;
}

.hero p {
    font-size: 20px;
    max-width: 600px;
    margin: 0 auto 30px;
    color: #34495e;
    position: relative;
    z-index: 2;
}

.btn {
    display: inline-block;
    background-color: var(--key-color);
    color: var(--key-text);
    padding: 12px 30px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.15s;
    border: 2px solid var(--key-border);
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    z-index: 2;
}

.btn:hover {
    border-color: var(--highlight);
    background-color: var(--key-hover);
    color: var(--highlight);
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.1), 0 0 20px rgba(52, 152, 219, 0.3);
}

.btn:active {
    transform: translateY(3px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1), 0 0 10px rgba(52, 152, 219, 0.2);
}

.btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to right,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    transition: left 0.5s;
}

.btn:hover:before {
    left: 100%;
}

/* About section */
.about {
    background-color: var(--section-bg);
    position: relative;
}

.about:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--highlight), transparent);
}

.about-content {
    display: flex;
    align-items: center;
    gap: 40px;
}

.about-text {
    flex: 1;
}

.about-image {
    flex: 1;
    text-align: center;
}

.about-image img {
    max-width: 100%;
    border-radius: 10px;
    border: 2px solid var(--key-border);
    box-shadow: 0 0 30px rgba(52, 152, 219, 0.2);
    transition: all 0.3s;
}

.about-image img:hover {
    transform: scale(1.02);
    box-shadow: 0 0 40px rgba(52, 152, 219, 0.4);
}

/* Skills section */
.skills {
    background-color: var(--body-bg);
    position: relative;
    background-image: linear-gradient(135deg, #d9dde2 0%, #edf0f4 50%, #c8cfd8 100%);
}

.skills:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--highlight-secondary), transparent);
}

.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.skill-item {
    background-color: #e2e4e7;/* var(--key-color); */
    padding: 25px 20px;
    border-radius: 8px;
    text-align: center;
    border: 2px solid var(--key-border);
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.1);
    transition: all 0.2s;
    transform-style: preserve-3d;
    position: relative;
    backdrop-filter: blur(5px);
    background-size: 48px 48px; /* fixed size for all icons */
    background-repeat: no-repeat;
    background-position: center 25px; /* Position the icon: horizontally centered, 25px from the top */
    padding-top: 85px;
}

.skill-item:hover {
    border-color: var(--highlight);
    transform: translateY(-5px);
    box-shadow: 0 9px 0 rgba(0, 0, 0, 0.1), 0 0 20px rgba(52, 152, 219, 0.2);
}

.skill-item.active {
    transform: translateY(3px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
}

.skill-item h3 {
    margin-bottom: 0; /* No bottom margin to keep text centered */
}

.skill-item[data-skill="cpp"] {
    background-image: url('../img/icons/cpp.png');
}

.skill-item[data-skill="python"] {
    background-image: url('../img/icons/python.png');
}

.skill-item[data-skill="java"] {
    background-image: url('../img/icons/java.png');
}

.skill-item[data-skill="linux"] {
    background-image: url('../img/icons/Tux.png');
}

.skill-item[data-skill="assembly"] {
    background-image: url('../img/icons/x86.png'); /* e.g., a processor icon */
}

.skill-item[data-skill="git"] {
    background-image: url('../img/icons/Git.png');
}

.skill-item[data-skill="sql"] {
    background-image: url('../img/icons/sql.png'); /* e.g., a database icon */
}

.skill-item[data-skill="pthreads"] {
    background-image: url('../img/icons/pthreads.png'); /* e.g., a thread icon */
}

.skill-item[data-skill="sysvipc"] {
    background-image: url('../img/icons/ipc.png'); /* e.g., a data flow icon */
}

.skill-item[data-skill="gdb"] {
    background-image: url('../img/icons/gdb.png');
}

.skill-item[data-skill="sfml"] {
    background-image: url('../img/icons/sfml.png');
}

.skill-item[data-skill="latex"] {
    background-image: url('../img/icons/LaTeX.png');
}

/* Projects section */
.projects {
    background-color: var(--section-bg);
    position: relative;
}

.projects:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
    perspective: 1000px;
}

.project-card {
    background-color: #e8eaed;
    border-radius: 10px;
    border: 1px solid #d1d5db;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;

    
    box-shadow:
        /* "thickness" of the slab */
        0px 8px 3px -4px rgba(0, 0, 0, 0.3),
        
        /* "floating" shadow on the page (soft, diffuse shadow) */
        0px 15px 25px -5px rgba(0, 0, 0, 0.2),
        
        /* subtle inner highlight on top edge */
        inset 0px 2px 1px -1px rgba(255, 255, 255, 0.7);
}

.project-card:hover {
    /* Lifts and tilts the card in 3D space */
    transform: translateY(-10px) rotateX(5deg) rotateY(-3deg) scale(1.03);

    /* Enhances shadows to make "lifted" effect */
    box-shadow:
        0px 18px 5px -6px rgba(0, 0, 0, 0.3),
        0px 30px 40px -8px rgba(0, 0, 0, 0.25),
        inset 0px 2px 1px -1px rgba(255, 255, 255, 0.7);
}

.project-image {
    height: 200px;
    background-color: rgba(210, 215, 220, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 2px solid var(--key-border);
    font-weight: bold;
    color: var(--key-text);
    padding: 20px;
    text-align: center;
}

.project-info {
    padding: 25px 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.project-title {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--highlight);
}

.project-image {
    background-repeat: no-repeat;
    background-position: center;
    background-size: 200px 200px;
    color: #ffffff; /* base text color white for contrast */
    text-shadow: 
        0 0 5px #213e5e,
        0 0 10px #4b7099,
        0 0 20px #3b6796,
        0 0 30px #819db8; 
}

.project-image[data-project="memory-allocator"] {
    background-image: url('../img/icons/custom_mem.png');
}

.project-image[data-project="binary-bomb"] {
    background-image: url('../img/icons/binary_bomb.png');
}

.project-image[data-project="donut-shop"] {
    background-image: url('../img/icons/deadlock.png');
}

.project-image[data-project="face-recognition"] {
    background-image: url('../img/icons/face_rec.png');
}

.project-image[data-project="university-db"] {
    background-image: url('../img/icons/univ_db.png');
}

.project-image[data-project="nbody-sim"] {
    background-image: url('../img/icons/nbody2.png');
}

/* Contact section */
.contact {
    background-color: var(--body-bg);
    position: relative;
    background: linear-gradient(135deg, #d9dde2 0%, #edf0f4 50%, #c8cfd8 100%);
    overflow: hidden;
}

.contact:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--highlight), transparent);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.form-group {
    margin-bottom: 25px;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--key-border);
    border-radius: 6px;
    font-size: 16px;
    background-color: var(--key-color);
    color: var(--key-text);
    font-family: 'Roboto Mono', monospace;
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.1);
    transition: all 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--highlight);
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.1), 0 0 15px rgba(52, 152, 219, 0.2);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

/* Footer */
footer {
    background-color: var(--key-color);
    color: var(--key-text);
    padding: 60px 0;
    text-align: center;
    position: relative;
    border-top: 1px solid var(--key-border);
}

footer:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--highlight-secondary), transparent);
}

.social-links {
    display: flex;
    justify-content: center;
    list-style: none;
    margin-top: 25px;
}

.social-links li {
    margin: 0 10px;
}

.social-links a {
    color: var(--key-text);
    text-decoration: none;
    padding: 10px 15px;
    border: 2px solid var(--key-border);
    border-radius: 6px;
    transition: all 0.2s;
    display: inline-block;
    background-color: rgba(230, 230, 230, 0.7);
    box-shadow: 0 3px 0 rgba(0, 0, 0, 0.1);
}

.social-links a:hover {
    border-color: var(--highlight);
    color: var(--highlight);
    transform: translateY(-3px);
    box-shadow: 0 6px 0 rgba(0, 0, 0, 0.1), 0 0 15px rgba(52, 152, 219, 0.2);
}

.social-links a:active {
    transform: translateY(2px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
}

/* RGB effect */
.rgb-shift {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--highlight), var(--accent), var(--highlight-secondary), var(--highlight));
    background-size: 300% 100%;
    animation: rgb-flow 5s linear infinite;
}

@keyframes rgb-flow {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

/* Keyboard grid effect */
.keyboard-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(52, 152, 219, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(52, 152, 219, 0.03) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
    opacity: 0.3;
}

/* Typing effect */
.typing-text {
    position: relative;
}

.typing-text::after {
    content: '';
    position: absolute;
    top: 0;
    right: -5px;
    height: 100%;
    width: 3px;
    background-color: var(--highlight);
    animation: cursor-blink 1s infinite;
}

@keyframes cursor-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* Responsive Design for Mobile */
@media (max-width: 768px) {
    .about-content {
        flex-direction: column;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 100%;
        height: 100vh;
        background-color: rgba(44, 62, 80, 0.98);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transform: translateX(100%);
        transition: transform 0.3s ease-in-out;
    }

    .nav-links.active {
        transform: translateX(0);
        /* background-color: var(--highlight); */
        background-color: rgba(44, 62, 80, 0.98);
    }

    .nav-links.active a {
        color: var(--key-text);
    }

    .nav-links li {
        margin: 20px 0;
    }

    .nav-links a {
        color: var(--key-color);
        font-size: 20px;
    }

    .hamburger {
        display: block;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 18px;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 880px) {
    .nav-links li {
        margin-left: 15px;
    }
    .logo {
        font-size: 20px;
    }
}

@media (max-width: 779px) {
    .nav-links li {
        margin-left: 15px;
    }
    .logo {
        font-size: 18px;
    }
}
        
/* header hover effects */
header {
    transition: all 0.3s ease, backdrop-filter 0.5s ease;
}

header:hover {
    background-color: rgba(229, 231, 233, 0.95);
    backdrop-filter: blur(15px) saturate(1.2);
    box-shadow: 0 4px 30px rgba(52, 152, 219, 0.15), 
                0 2px 10px rgba(142, 68, 173, 0.1);
    transform: translateY(2px);
}

/* Logo enhancement on header hover */
header:hover .logo {
    color: var(--fractal-purple);
    text-shadow: 0 0 20px rgba(142, 68, 173, 0.3);
    transform: scale(1.05);
    transition: all 0.3s ease;
}

/* links enhancement on header hover */
header:hover .nav-links a {
    background-color: rgba(232, 234, 237, 0.9);
    transition: all 0.3s ease;
}

header:hover .nav-links a:hover {
    border-color: var(--fractal-purple);
    box-shadow: 0 2px 10px rgba(142, 68, 173, 0.3);
    transform: translateY(-2px);
}

/* Animated border effect for header */
header::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--fractal-purple), 
        var(--highlight), 
        var(--fractal-purple), 
        transparent);
    background-size: 200% 100%;
    opacity: 0;
    transition: opacity 0.3s ease;
    animation: shimmer 3s linear infinite;
}

header:hover::after {
    opacity: 1;
}

@keyframes shimmer {
    0% { background-position: -200% 50%; }
    100% { background-position: 200% 50%; }
}

/* Enhanced cloud animation styles */
.fractal-canvas {
    opacity: 0.4;
    transition: opacity 0.5s ease;
}

/* Strong cloud effect on section hover */
.hero:hover .fractal-canvas,
.contact:hover .fractal-canvas {
    opacity: 0.6;
}

/* Multi-layer cloud effect */
.cloud-layer-1,
.cloud-layer-2 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.2;
}

.cloud-layer-1 {
    animation: cloudFloat 45s ease-in-out infinite;
    z-index: 1;
}

.cloud-layer-2 {
    animation: cloudFloat 60s ease-in-out infinite reverse;
    z-index: 0;
    opacity: 0.15;
}

@keyframes cloudFloat {
    0%, 100% { 
        transform: translateX(0) translateY(0) scale(1);
    }
    25% { 
        transform: translateX(30px) translateY(-20px) scale(1.05);
    }
    50% { 
        transform: translateX(-20px) translateY(10px) scale(0.95);
    }
    75% { 
        transform: translateX(-40px) translateY(-30px) scale(1.02);
    }
}

/* Cloud Toggle Button Styles */
.cloud-toggle-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 10;
    background-color: var(--key-color);
    border: 2px solid var(--key-border);
    border-radius: 6px;
    width: 40px;
    height: 40px;
    font-size: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
}

.cloud-toggle-btn:hover {
    opacity: 1;
    background-color: var(--key-hover);
    border-color: var(--highlight);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.cloud-toggle-btn.disabled {
    opacity: 0.5;
    color: #999;
}

.cloud-toggle-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

/* Ensure proper positioning for sections with clouds */
.hero, .contact {
    position: relative;
}

/* Media query for mobile */
@media (max-width: 768px) {
    .cloud-toggle-btn {
        width: 35px;
        height: 35px;
        font-size: 18px;
        top: 5px;
        right: 5px;
    }
    .sound-toggle-btn {
        width: 35px;
        height: 35px;
        font-size: 18px;
        top: -40px;
    }
}

/* Sound Toggle Button Styles */
.sound-toggle-btn {
    position: absolute;
    top: 0px;
    left: -25px;
    right: auto;
    z-index: 10;
    background-color: var(--key-color);
    border: 2px solid var(--key-border);
    border-radius: 6px;
    width: 20px;
    height: 20px;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
}

.sound-toggle-btn:hover {
    opacity: 1;
    background-color: var(--key-hover);
    border-color: var(--highlight);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.sound-toggle-btn.disabled {
    opacity: 0.5;
    color: #999;
}

.sound-toggle-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.project-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(5px);
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    position: relative;
    /* background-color: var(--key-color); */
    background-color: #f7f7f7ce;
    margin: 2% auto;
    padding: 0;
    width: 90%;
    max-height: 96vh; /* Prevent modal from exceeding viewport */
    max-width: 900px;
    border-radius: 12px;
    animation: modalSlideIn 0.3s ease;
    
    /* Flexbox for proper layout */
    display: flex;
    flex-direction: column;
    
    /* 3D styles */
    border-top: 1px solid rgba(255, 255, 255, 0.9);
    border-left: 1px solid rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid rgba(0, 0, 0, 0.2);
    border-right: 1px solid rgba(0, 0, 0, 0.2);
    box-shadow:
        0px 10px 6px -6px rgba(0, 0, 0, 0.4),
        0px 20px 30px rgba(0, 0, 0, 0.2);
}

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

.modal-header {
    background: linear-gradient(90deg, #5d8aa8d0, #a5c8e1cf);
    padding: 15px; /* reduced from 30px */
    border-radius: 8px 8px 0 0;
    position: relative;
    border-bottom: 2px solid var(--highlight-secondary);
    flex-shrink: 0; /* Prevent header from shrinking */
}

.modal-header h2 {
    margin: 0 0 10px 0;
    font-size: 2em;
    color: #ffffff;
}

.modal-header .tagline {
    font-size: 1.1em;
    color: #e8eaed;
    font-style: italic;
}

.modal-close {
    position: absolute;
    right: 25px;
    top: 15px;
    color: var(--key-text);
    font-size: 35px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    z-index: 10;
}

.modal-close:hover,
.modal-close:focus {
    color: var(--key-color);
    transform: rotate(90deg);
}

.modal-body {
    padding-top: 5px; /* edited padding to fit more on modal page */
    padding-bottom: 5px; 
    padding-left: 15px;
    padding-right: 15px;
    max-height: calc(96vh - 120px); /* Account for header height and margins */
    overflow-y: auto;
    flex-grow: 1; /* Allow body to grow */
}

/* Smooth scrollbar styling */
.modal-body::-webkit-scrollbar {
    width: 8px;
}

.modal-body::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

.modal-body::-webkit-scrollbar-thumb {
    background: rgba(93, 138, 168, 0.5);
    border-radius: 4px;
}

.modal-body::-webkit-scrollbar-thumb:hover {
    background: rgba(93, 138, 168, 0.7);
}

.modal-section {
    margin-bottom: 30px;
}

.modal-section h3 {
    color: var(--highlight);
    margin-bottom: 15px;
    font-size: 1.4em;
    border-bottom: 2px solid var(--highlight-secondary);
    padding-bottom: 5px;
}

.modal-section h4 {
    color: #7496ae;
    margin: 15px 0 10px 0;
}

.modal-links {
    display: flex;
    gap: 20px;
    margin: 20px 0;
    flex-wrap: wrap;
}

.modal-links a {
    background: linear-gradient(135deg, #8D99AE 0%, #778DA9 100%);
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 2px solid #5a6675;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.modal-links a:hover {
    background: linear-gradient(135deg, #778DA9 0%, #8D99AE 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border-color: #A3B1C6;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.tech-item {
    background-color: var(--highlight-secondary);
    color: var(--key-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9em;
}

.challenge-box {
    background-color: rgba(51, 116, 160, 0.157);
    border-left: 4px solid var(--highlight);
    padding: 15px;
    margin: 15px 0;
    border-radius: 0 5px 5px 0;
}

.challenge-box strong {
    color: #7496ae;
}

/* indicate clickability */
.project-card {
    background-color: #e2e4e7;
    border-radius: 12px; /* rounded corners */
    overflow: hidden;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    position: relative;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1); /* Smooth transition */

    /* --- 3D effect --- */
    /* borders to simulate a light source from the top-left */
    border-top: 1px solid rgba(255, 255, 255, 0.9);
    border-left: 1px solid rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid rgba(0, 0, 0, 0.2);
    border-right: 1px solid rgba(0, 0, 0, 0.2);

    /* complex shadow for depth and thickness */
    box-shadow:
        /* The "slab" thickness - darker and more defined */
        0px 10px 6px -6px rgba(0, 0, 0, 0.4),
        /* The "floating" effect - softer and more spread out */
        0px 20px 30px rgba(0, 0, 0, 0.2);
}

.project-card:hover {
    transform: translateY(-12px) rotateX(8deg) rotateY(-5deg) scale(1.05);
    box-shadow:
        0px 22px 8px -8px rgba(0, 0, 0, 0.4),
        0px 35px 50px rgba(0, 0, 0, 0.3);
}

.project-modal-trigger {
    cursor: pointer;
    align-self: center; /* Horizontally center button */
    margin-top: 20px;   /* space above the button */
}

/* Responsive modal */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        margin: 10px auto;
    }
    
    .modal-header {
        padding: 20px;
    }
    
    .modal-body {
        padding: 20px;
    }
    
    .modal-links {
        flex-direction: column;
    }
    
    .modal-links a {
        width: 100%;
        justify-content: center;
    }
}