:root {
  --bg-primary: #001628;
  --bg-secondary: #181e30;
  --bg-tertiary: #2e1e1e;
  --bg-input: rgba(27, 42, 71, 0.8);
  
  --text-primary: #cdd6f4;
  --text-secondary: #a6adc8;
  --text-muted: #9399b2;
  --text-headings: #ffffff;
  --text-inverted: #1e1e2e;

  --accent-primary: #89b4fa;
  --accent-primary-hover: #a6c1ee;
  --accent-secondary: #585b70;
  
  --border-primary: #303952;
  --border-secondary: rgba(255, 255, 255, 0.08);
  --border-input: #3c5b99;
  --border-input-focus: #89b4fa;

  --badge-bg: rgba(137, 180, 250, 0.1);
  --badge-text: #89b4fa;
  
  --shadow-color: rgba(0, 0, 0, 0.2);
  --shadow-color-accent: rgba(137, 180, 250, 0.2);
}

body.light-mode {
  --bg-primary: #f0f2f5;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e9ecef;
  --bg-input: rgba(255, 255, 255, 0.8);

  --text-primary: #495057;
  --text-secondary: #6c757d;
  --text-muted: #868e96;
  --text-headings: #212529;
  --text-inverted: #ffffff;

  --accent-primary: #007bff;
  --accent-primary-hover: #0056b3;
  --accent-secondary: #ced4da;

  --border-primary: #dee2e6;
  --border-secondary: #e9ecef;
  --border-input: #ced4da;
  --border-input-focus: #007bff;

  --badge-bg: rgba(0, 123, 255, 0.1);
  --badge-text: #007bff;

  --shadow-color: rgba(0, 0, 0, 0.1);
  --shadow-color-accent: rgba(0, 123, 255, 0.15);
}

/* General Body Styles */
body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: sans-serif;
    margin: 0;
    transition: background-color 0.3s ease, color 0.3s ease;
    position: relative;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Network Security Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 20%, rgba(137, 180, 250, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(137, 180, 250, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(137, 180, 250, 0.08) 0%, transparent 50%);
    z-index: -2;
}

/* Network Grid Pattern */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(137, 180, 250, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(137, 180, 250, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: grid-move 20s linear infinite;
    z-index: -1;
}

/* Network Security Animation Elements */
.network-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.network-node {
    position: absolute;
    width: 8px;
    height: 8px;
    background-color: var(--accent-primary);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(137, 180, 250, 0.6);
    animation: pulse-node 3s ease-in-out infinite;
}

.node-1 {
    top: 20%;
    left: 15%;
    animation-delay: 0s;
}

.node-2 {
    top: 40%;
    right: 20%;
    animation-delay: 0.6s;
}

.node-3 {
    bottom: 30%;
    left: 25%;
    animation-delay: 1.2s;
}

.node-4 {
    top: 60%;
    left: 50%;
    animation-delay: 1.8s;
}

.node-5 {
    bottom: 20%;
    right: 30%;
    animation-delay: 2.4s;
}

.data-packet {
    position: absolute;
    width: 4px;
    height: 4px;
    background-color: var(--accent-primary);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(137, 180, 250, 0.8);
    animation: data-flow 8s linear infinite;
}

.packet-1 {
    top: 25%;
    animation-delay: 0s;
}

.packet-2 {
    top: 50%;
    animation-delay: 2.5s;
}

.packet-3 {
    top: 75%;
    animation-delay: 5s;
}


/* Tech Icons Animation */
.tech-icon {
    position: absolute;
    font-size: 20px;
    color: var(--accent-primary);
    opacity: 0.4;
    animation: float-tech 12s ease-in-out infinite;
}

.icon-1 {
    top: 15%;
    left: 10%;
    animation-delay: 0s;
}

.icon-2 {
    top: 30%;
    right: 15%;
    animation-delay: 1.5s;
}

.icon-3 {
    bottom: 25%;
    left: 20%;
    animation-delay: 3s;
}

.icon-4 {
    top: 70%;
    left: 60%;
    animation-delay: 4.5s;
}

.icon-5 {
    bottom: 15%;
    right: 25%;
    animation-delay: 6s;
}

.icon-6 {
    top: 45%;
    left: 35%;
    animation-delay: 7.5s;
}

.icon-7 {
    top: 25%;
    left: 70%;
    animation-delay: 9s;
}

.icon-8 {
    bottom: 40%;
    right: 40%;
    animation-delay: 10.5s;
}

/* Crossing Tech Icons */
.crossing-icon {
    position: absolute;
    font-size: 8px;
    color: var(--accent-primary);
    opacity: 0.6;
    animation: cross-screen 18s linear infinite;
}

.cross-1 {
    top: 30%;
    animation-delay: 0s;
}

.cross-2 {
    top: 55%;
    animation-delay: 6s;
}

.cross-3 {
    top: 75%;
    animation-delay: 12s;
}

body.light-mode .network-node,
body.light-mode .data-packet,
body.light-mode .tech-icon,
body.light-mode .crossing-icon {
    opacity: 0.2;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

main {
    padding-top: 80px; 
}

#home {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 100vh;
    gap: 2rem;
}

.hero-content {
    max-width: 600px;
}

.freelance-badge {
    display: inline-block;
    background-color: var(--badge-bg);
    color: var(--badge-text);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin: 0 0 0.5rem 0;
    font-weight: 700;
    color: var(--text-headings);
}

.gradient-text {
    background: linear-gradient(90deg, #89b4fa, #b4befe, #f5c2e7, #89b4fa);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: gradient-flow 5s ease-in-out infinite;
}

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

.animated-role {
    font-size: 2rem;
    font-weight: 500;
    color: var(--text-primary);
    border-right: 3px solid var(--accent-primary); 
    white-space: nowrap;
    overflow: hidden;
    display: inline-block;
    animation: blink-cursor .75s step-end infinite;
    min-height: 2.5rem; 
}

@keyframes blink-cursor {
    from, to { border-color: transparent }
    50% { border-color: var(--accent-primary); }
}

.hero-content h2 {
    margin: 0 0 1.5rem 0;
    color: var(--text-primary);
    font-weight: 500;
}

.hero-content p {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}


.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 50px; 
    text-decoration: none;
    font-weight: bold;
    font-size: 1rem;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    z-index: 1;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px var(--shadow-color);
}

.btn-primary {
    background-color: var(--accent-primary);
    color: var(--text-inverted);
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border-color: var(--accent-secondary);
}

.btn-secondary:hover {
    background-color: var(--accent-primary);
    color: var(--text-inverted);
    border-color: var(--accent-primary);
}


.btn i {
    margin-left: 8px;
    display: inline-block; 
    transition: transform 0.3s ease-in-out;
}

.btn:hover i {
    transform: translateX(4px);
}

.tech-stack {
    margin-top: 3rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.tech-icons {
    display: flex;
    gap: 1.5rem;
    font-size: 1.8rem;
}

.tech-icons i {
    color: var(--text-muted);
    transition: color 0.3s ease;
}

.tech-icons i:hover {
    color: var(--accent-primary);
}

.hero-image {
    flex-shrink: 0;
}

.image-wrapper {
    width: 400px;
    height: 400px;
    border-radius: 50%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 10px solid var(--bg-secondary);
}

.image-wrapper img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    filter: grayscale(100%);
    background-color: var(--bg-tertiary); 
}

.icon-orbit {
    position: absolute;
    width: 110%;
    height: 110%;
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.orbit-icon {
    position: absolute;
    width: 40px;
    height: 40px;
    background-color: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    font-size: 1.2rem;
    border: 2px solid var(--border-primary);
    animation: rotate-reverse 30s linear infinite;
}

@keyframes rotate-reverse {
    from { transform: rotate(0deg); }
    to { transform: rotate(-360deg); }
}


.orbit-icon.icon-1 { top: 20%; left: 88%; transform: translate(-50%, -50%); }
.orbit-icon.icon-2 { bottom: 50%; left: -5%; }
.orbit-icon.icon-3 { bottom: -1%; right: -5%; }



.content-section {
    padding: 6rem 0;
    border-bottom: 1px solid var(--border-secondary);
}

.content-section:last-of-type {
    border-bottom: none;
}

.section-title {
    font-size: 2.5rem;
    color: var(--text-headings);
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent-primary);
    margin: 0.5rem auto 0;
    border-radius: 2px;
}

.section-paragraph {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    line-height: 1.8;
    font-size: 1.1rem;
    color: var(--text-secondary);
}


/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.skill-card {
    background-color: var(--bg-secondary);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    border: 1px solid var(--border-primary);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px var(--shadow-color);
}

.skill-card i {
    font-size: 3rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.skill-card h3 {
    font-size: 1.1rem;
    margin: 0;
    color: var(--text-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 1.5rem;
    align-items: start;
    justify-items: center;
}


.project-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 1.6;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    min-height: 225px;
}

.project-card:hover {
    transform: translateY(-5px) scale(1.01);
    box-shadow: 0 15px 35px rgba(137, 180, 250, 0.25);
}

.project-image {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(17, 49, 136, 0.678) 10%, transparent 70%);
    backdrop-filter: blur(10px);
    -webkit-mask-image: linear-gradient(to top, black 40%, transparent 100%);
    mask-image: linear-gradient(to top, black 40%, transparent 100%);
    z-index: 0;
}

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    min-height: 75%; /* Ensure it covers at least this much height */
    transform: translateY(100%);
    transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    opacity: 0;
    visibility: hidden;
}

.project-card:hover .project-overlay {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.overlay-content {
    position: relative;
    z-index: 1;
    padding: 1.5rem 1.5rem 3rem; /* Increased bottom padding to fill gap */
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    color: white;
    text-align: center;
    direction: ltr;
}

.overlay-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0 0 0.8rem 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    animation: slideInFromBottom 0.6s ease-out 0.1s both;
}

.overlay-content p {
    font-size: 0.85rem;
    line-height: 1.5;
    margin-bottom: 1.2rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    animation: slideInFromBottom 0.6s ease-out 0.2s both;
    opacity: 0.9;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.2rem;
    flex-wrap: wrap;
    justify-content: center;
    animation: slideInFromBottom 0.6s ease-out 0.3s both;
}

.project-tags span {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    padding: 0.3rem 0.6rem;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
}

.project-tags span:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.project-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: slideInFromBottom 0.6s ease-out 0.4s both;
}

.btn-project {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.2) 0%,
        rgba(255, 255, 255, 0.1) 100%);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(15px);
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-project::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.2) 50%, 
        transparent 100%);
    transition: left 0.6s ease;
}

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

.btn-project:hover {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.3) 0%,
        rgba(255, 255, 255, 0.2) 100%);
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.6);
}

.btn-project i {
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.btn-project:hover i {
    transform: scale(1.1);
}

/* Slide in animation */
@keyframes slideInFromBottom {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Light mode adjustments */
body.light-mode .project-overlay {
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.85) 0%,
        rgba(248, 249, 250, 0.85) 50%,
        rgba(233, 236, 239, 0.85) 100%
    );
}

body.light-mode .overlay-content {
    color: var(--text-headings);
}

body.light-mode .project-tags span {
    background: rgba(0, 123, 255, 0.15);
    color: var(--accent-primary);
    border-color: rgba(0, 123, 255, 0.3);
}

body.light-mode .btn-project {
    background: linear-gradient(135deg, 
        rgba(0, 123, 255, 0.2) 0%,
        rgba(0, 123, 255, 0.1) 100%);
    color: var(--text-headings);
    border-color: rgba(0, 123, 255, 0.4);
}

body.light-mode .btn-project:hover {
    background: linear-gradient(135deg, 
        rgba(0, 123, 255, 0.3) 0%,
        rgba(0, 123, 255, 0.2) 100%);
    border-color: rgba(0, 123, 255, 0.6);
}


/* Contact Section */
#contact {
    position: relative;
    overflow: hidden; /* Keeps the pseudo-element contained */
}

body:not(.light-mode) #contact::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1200px; /* Large size for a subtle effect */
    height: 1200px;
    background: radial-gradient(circle, rgba(137, 180, 250, 0.08) 0%, rgba(137, 180, 250, 0) 60%);
    transform: translate(-50%, -50%);
    animation: pulse-background 10s infinite ease-in-out;
    z-index: 0;
}

@keyframes pulse-background {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 0.8; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(1); opacity: 0.8; }
}

.contact-form {
    max-width: 700px;
    margin: 3rem auto 0;
    display: flex;
    flex-direction: column;
}

.contact-form .form-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.contact-form input,
.contact-form textarea {
    box-sizing: border-box; /* Add this */
    width: 100%;
    padding: 1rem;
    background-color: var(--bg-input);
    border: 1px solid var(--border-input);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease-in-out;
    backdrop-filter: blur(5px); /* Frosted glass effect */
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--border-input-focus);
    box-shadow: 0 0 15px var(--shadow-color-accent);
    transform: translateY(-2px);
}

.contact-form textarea {
    resize: vertical;
    margin-bottom: 1.5rem;
}

.contact-form .btn {
    align-self: center;
    width: auto;
    padding: 1rem 3rem;
    transition: all 0.3s ease-in-out;
}

.contact-form .btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 20px var(--shadow-color-accent);
}



/* Footer */
.site-footer {
    background-color: var(--bg-primary);
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid var(--border-secondary);
}

.footer-social {
    margin-bottom: 1.5rem;
}


.site-footer .social-icons {
    margin-bottom: 1.5rem;
}

.copyright {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Professional Scroll Up Button */
.scroll-up-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(100px) scale(0.8);
    transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    z-index: 1000;
    background: linear-gradient(135deg, 
        var(--accent-primary) 0%, 
        #b4befe 25%, 
        #f5c2e7 50%, 
        #89b4fa 75%, 
        var(--accent-primary) 100%);
    background-size: 300% 300%;
    animation: gradient-shift 4s ease-in-out infinite;
    box-shadow: 0 8px 25px rgba(137, 180, 250, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.scroll-up-btn.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.scroll-up-btn:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 15px 35px rgba(137, 180, 250, 0.5);
    animation-duration: 2s;
}

.scroll-up-btn:active {
    transform: translateY(-2px) scale(1.05);
}

.scroll-icon {
    position: relative;
    z-index: 2;
    color: white;
    font-size: 1rem;
    transition: all 0.3s ease;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.scroll-up-btn:hover .scroll-icon {
    animation: bounce-up 0.6s ease-in-out;
}

.scroll-progress {
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    border-radius: 50%;
    background: conic-gradient(
        from 0deg,
        transparent 0deg,
        var(--accent-primary) 0deg,
        var(--accent-primary) var(--progress, 0deg),
        transparent var(--progress, 0deg)
    );
    opacity: 0.8;
    transition: all 0.3s ease;
}

.scroll-up-btn:hover .scroll-progress {
    opacity: 1;
    transform: rotate(10deg);
}

/* Gradient Animation */
@keyframes gradient-shift {
    0% {
        background-position: 0% 50%;
    }
    25% {
        background-position: 100% 50%;
    }
    50% {
        background-position: 100% 100%;
    }
    75% {
        background-position: 0% 100%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Bounce Animation */
@keyframes bounce-up {
    0%, 100% {
        transform: translateY(0);
    }
    25% {
        transform: translateY(-8px);
    }
    50% {
        transform: translateY(-4px);
    }
    75% {
        transform: translateY(-6px);
    }
}

/* Pulse Effect */
.scroll-up-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(137, 180, 250, 0.4) 0%, transparent 70%);
    transform: translate(-50%, -50%) scale(0);
    animation: pulse-ring 3s ease-out infinite;
    z-index: -1;
}

@keyframes pulse-ring {
    0% {
        transform: translate(-50%, -50%) scale(0);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(2);
        opacity: 0;
    }
}

/* Light mode adjustments */
body.light-mode .scroll-up-btn {
    background: linear-gradient(135deg, 
        #007bff 0%, 
        #0056b3 25%, 
        #004085 50%, 
        #002752 75%, 
        #007bff 100%);
    box-shadow: 0 8px 25px rgba(0, 123, 255, 0.3);
}

body.light-mode .scroll-up-btn:hover {
    box-shadow: 0 15px 35px rgba(0, 123, 255, 0.5);
}

body.light-mode .scroll-up-btn::before {
    background: radial-gradient(circle, rgba(0, 123, 255, 0.4) 0%, transparent 70%);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 1024px) {
    .container {
        padding: 0 1.5rem;
    }

    #home {
        flex-direction: column-reverse;
        text-align: center;
        gap: 2rem;
        padding: 2rem 0;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-image {
        max-width: 280px;
        margin: 0 auto;
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 1.2rem;
    }

    .skill-card {
        padding: 1.5rem 1rem;
    }
}

@media (max-width: 992px) {
    .container {
        padding: 0 1.5rem;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-content p {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.2rem;
    }

    .project-card {
        min-height: 250px;
    }

    .overlay-content {
        padding: 1.2rem;
    }

    .overlay-content h3 {
        font-size: 1rem;
    }

    .overlay-content p {
        font-size: 0.8rem;
        line-height: 1.4;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-top: 1px solid var(--border-primary);
        padding: 1rem 0;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        z-index: 1000;
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: block;
    }

    .hero-content h1 {
        font-size: 1.8rem;
        line-height: 1.2;
    }

    .hero-content h2 {
        font-size: 1.1rem;
    }

    .hero-content p {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
        padding: 0.8rem 1.5rem;
    }

    .skills-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.8rem;
    }

    .skill-card {
        padding: 1rem 0.5rem;
    }

    .skill-card i {
        font-size: 1.8rem;
    }

    .skill-card h3 {
        font-size: 0.75rem;
        margin-top: 0.5rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }

    .project-card {
        min-height: 220px;
        max-width: 100%;
    }

    .overlay-content {
        padding: 1rem 1rem 2rem;
    }

    .overlay-content h3 {
        font-size: 0.95rem;
        margin-bottom: 0.6rem;
    }

    .overlay-content p {
        font-size: 0.75rem;
        line-height: 1.3;
        margin-bottom: 1rem;
    }

    .project-tags {
        gap: 0.3rem;
        margin-bottom: 1rem;
    }

    .project-tags span {
        font-size: 0.6rem;
        padding: 0.2rem 0.5rem;
    }

    .btn-project {
        padding: 0.6rem 1.2rem;
        font-size: 0.8rem;
    }

    .contact-form .form-group {
        flex-direction: column;
        gap: 1rem;
    }

    .contact-form .btn {
        width: 100%;
        max-width: 250px;
    }

    .section-title {
        font-size: 2rem;
    }

    .section-paragraph {
        font-size: 0.9rem;
    }
}

@media (max-width: 600px) {
    .hero-content h1 {
        font-size: 1.6rem;
    }

    .hero-content h2 {
        font-size: 1rem;
    }

    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
    }

    .skill-card {
        padding: 0.8rem 0.4rem;
    }

    .skill-card i {
        font-size: 1.5rem;
    }

    .skill-card h3 {
        font-size: 0.7rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        max-width: 100%;
    }

    .project-card {
        min-height: 200px;
        margin: 0 auto;
        max-width: 350px;
    }

    .overlay-content {
        padding: 0.8rem 0.8rem 1.5rem;
    }

    .overlay-content h3 {
        font-size: 0.9rem;
        margin-bottom: 0.5rem;
    }

    .overlay-content p {
        font-size: 0.7rem;
        line-height: 1.2;
        margin-bottom: 0.8rem;
    }

    .project-tags {
        gap: 0.2rem;
        margin-bottom: 0.8rem;
    }

    .project-tags span {
        font-size: 0.55rem;
        padding: 0.15rem 0.4rem;
    }

    .btn-project {
        padding: 0.5rem 1rem;
        font-size: 0.75rem;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    .animated-role {
        font-size: 1rem;
    }

    .image-wrapper {
        width: 180px;
        height: 180px;
    }

    .orbit-icon {
        display: none;
    }

    .tech-stack {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }

    .tech-icons {
        justify-content: center;
        gap: 1rem;
        font-size: 1.5rem;
    }

    .container {
        padding: 0 1rem;
    }

    .hero-content p {
        font-size: 1rem;
        line-height: 1.5;
    }

    .freelance-badge {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }

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

    .skill-card {
        padding: 1rem;
    }


    .contact-form {
        width: 100%;
        padding: 0;
        box-sizing: border-box;
    }

    .contact-form input,
    .contact-form textarea {
        font-size: 16px; /* Prevents zoom on iOS */
        box-sizing: border-box;
    }

    .site-footer .social-icons a {
        font-size: 1.4rem;
        margin: 0 0.5rem;
    }
}

/* Extra small screens (320px and below) */
@media (max-width: 320px) {
    .container {
        padding: 0 0.5rem;
    }

    .hero-content h1 {
        font-size: 1.3rem;
        line-height: 1.1;
    }

    .animated-role {
        font-size: 0.85rem;
    }

    .hero-content p {
        font-size: 0.75rem;
        line-height: 1.3;
    }

    .image-wrapper {
        width: 140px;
        height: 140px;
    }

    .hero-buttons .btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
        max-width: 200px;
    }

    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }

    .skill-card {
        padding: 0.5rem 0.2rem;
    }

    .skill-card i {
        font-size: 1.2rem;
    }

    .skill-card h3 {
        font-size: 0.55rem;
    }

    .project-card {
        max-width: 280px;
        min-height: 160px;
    }

    .overlay-content {
        padding: 0.5rem 0.5rem 1rem;
    }

    .overlay-content h3 {
        font-size: 0.75rem;
    }

    .overlay-content p {
        font-size: 0.55rem;
        line-height: 1.1;
    }

    .project-tags span {
        font-size: 0.45rem;
        padding: 0.1rem 0.25rem;
    }

    .btn-project {
        padding: 0.3rem 0.6rem;
        font-size: 0.6rem;
    }

    .section-title {
        font-size: 1.3rem;
    }

    .section-paragraph {
        font-size: 0.7rem;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn:hover,
    .skill-card:hover,
    .project-card:hover {
        transform: none;
    }

    .btn:active {
        transform: scale(0.98);
    }

    .skill-card:active,
    .project-card:active {
        transform: translateY(-5px);
    }

    /* Show project overlay on touch devices */
    .project-card:active .project-overlay {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
}

/* Landscape orientation optimizations */
@media (max-width: 768px) and (orientation: landscape) {
    #home {
        flex-direction: row;
        align-items: center;
        min-height: 100vh;
        padding: 1rem 0;
    }

    .hero-content {
        flex: 1;
        text-align: left;
    }

    .hero-image {
        flex: 0 0 auto;
        max-width: 250px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: row;
        gap: 1rem;
    }
}

/* High DPI screens */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .project-image img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}



@keyframes grid-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

@keyframes pulse-node {
    0%, 100% { 
        opacity: 0.3;
        transform: scale(1);
    }
    50% { 
        opacity: 0.8;
        transform: scale(1.2);
    }
}

@keyframes data-flow {
    0% { 
        transform: translateX(-100px);
        opacity: 0;
    }
    50% { 
        opacity: 1;
    }
    100% { 
        transform: translateX(100vw);
        opacity: 0;
    }
}

@keyframes float-tech {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.4;
    }
    25% {
        transform: translateY(-20px) rotate(5deg);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-10px) rotate(-3deg);
        opacity: 0.8;
    }
    75% {
        transform: translateY(-15px) rotate(2deg);
        opacity: 0.5;
    }
}

@keyframes cross-screen {
    0% {
        transform: translateX(-50px);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.6;
    }
    100% {
        transform: translateX(calc(100vw + 50px));
        opacity: 0;
    }
}

/* Theme Switcher */
.theme-switcher {
    display: flex;
    align-items: center;
    margin: 0 1rem;
}

.theme-toggle-checkbox {
    display: none;
}

.theme-toggle-label {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5px;
    position: relative;
    height: 26px;
    width: 50px;
    transition: background-color 0.3s ease;
}

.theme-toggle-label .fa-moon {
    color: #f1c40f;
}

.theme-toggle-label .fa-sun {
    color: #f39c12;
}

.theme-toggle-ball {
    background-color: #fff;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    height: 22px;
    width: 22px;
    transform: translateX(0px);
    transition: transform 0.3s ease;
}

.theme-toggle-checkbox:checked + .theme-toggle-label .theme-toggle-ball {
    transform: translateX(24px);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Header and Navbar */
header {
    background-color: var(--bg-primary);
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-secondary);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: background-color 0.3s ease;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--text-headings);
    text-decoration: none;
}

.logo img {
    height: 40px;
    width: auto;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

nav ul li a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: var(--accent-primary);
}

nav .social-icons a {
    color: var(--text-primary);
    margin-right: 0.5rem; /* Adjusted spacing */
    font-size: 1.4rem; /* Increased size */
    transition: color 0.3s ease, transform 0.3s ease;
}

nav .social-icons a:hover {
    color: var(--accent-primary);
    transform: translateY(-2px);
}

.site-footer .social-icons a {
    color: var(--text-secondary);
    font-size: 1.6rem; /* Larger size for footer */
    margin: 0 0.8rem; /* Increased spacing for footer */
    transition: color 0.3s ease, transform 0.3s ease;
}

.site-footer .social-icons a:hover {
    color: var(--accent-primary);
    transform: translateY(-3px);
}


/* Resume Section */
#resume .resume-content {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-primary);
    text-align: left;
}

#resume .resume-summary h3 {
    color: var(--accent-primary);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent-primary);
    padding-bottom: 0.5rem;
    display: inline-block;
}

#resume .resume-summary ul {
    list-style: none;
    padding-left: 0;
}

#resume .resume-summary ul li {
    /* SVG icon color is handled in JS now */
    background-size: 20px;
    padding-left: 30px;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

#resume .resume-buttons {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
}

@media print {
    body * {
        visibility: hidden;
    }
    #resume, #resume * {
        visibility: visible;
    }
    #resume {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
    }
    .resume-buttons {
        display: none;
    }
}