@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --bg-color: #1f242d;
    --second-bg-color: #323946;
    --text-color: #fff;
    --main-color: #00eeff;
    --shadow-color: #00ff91;
    --radius: 1.5rem;
    --transition: 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
    border: none;
    outline: none;
    scroll-behavior: smooth;
    font-family: 'Poppins', sans-serif;
}

html {
    font-size: 62.5%;
    overflow-x: hidden;
    scroll-padding-top: 8rem;
    width: 100%;
}

body {
    background: var(--bg-color);
    color: var(--text-color);
    width: 100%;
    overflow-x: hidden;
}

section {
    min-height: 100vh;
    padding: 10rem 9% 2rem;
    width: 100%;
    max-width: 100vw;
}

/* Staggered/alternating section backgrounds */
.home {
    background: var(--bg-color);
}

.about {
    background: var(--second-bg-color);
}

.skills {
    background: var(--bg-color);
}

.contact {
    background: var(--second-bg-color);
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem 9%;
    background: var(--bg-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    transition: border-bottom var(--transition);
}

.header.sticky {
    border-bottom: .1rem solid rgba(0, 0, 0, 0.2);
}

.logo {
    font-size: 2.5rem;
    color: var(--text-color);
    font-weight: 600;
    cursor: default;
}

.navbar a {
    font-size: 1.7rem;
    color: var(--text-color);
    margin-left: 4rem;
    transition: color var(--transition);
}

.navbar a:hover,
.navbar a.active {
    color: var(--main-color);
}

#menu-icon {
    font-size: 3.6rem;
    color: var(--text-color);
    display: none;
    cursor: pointer;
}

.home {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.home-img img {
    width: 35vw;
    border-radius: 20%;
    animation: floatImage 4s ease-in-out infinite;
    will-change: transform;
    max-width: 320px;
    height: auto;
}

@keyframes floatImage {
    0% { transform: translateY(0); }
    50% { transform: translateY(-2.4rem); }
    100% { transform: translateY(0); }
}

.home-content h3 {
    font-size: 3.2rem;
    font-weight: 700;
}

span {
    color: var(--main-color);
}

.home-content h3:nth-of-type(2) {
    margin-bottom: 2rem;
}

.home-content h1 {
    font-size: 5rem;
    font-weight: 700;
    line-height: 1.3;
}

.home-content p {
    font-size: 1.6rem;
}

.social-media a {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 4rem;
    height: 4rem;
    background: transparent;
    border: .2rem solid var(--main-color);
    border-radius: 50%;
    font-size: 2rem;
    color: var(--main-color);
    margin: 3rem 1.5rem 3rem 0;
    transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}

.social-media a:hover,
.social-media a:focus {
    background: var(--main-color);
    color: var(--second-bg-color);
    box-shadow: 0 0 1rem var(--main-color);
}

.btn {
    display: inline-block;
    padding: 1rem 2.8rem;
    background: var(--main-color);
    border-radius: 4rem;
    box-shadow: 0 0 0.9rem var(--shadow-color);
    font-size: 1.6rem;
    color: var(--second-bg-color);
    letter-spacing: .1rem;
    font-weight: 600;
    transition: box-shadow var(--transition), background var(--transition);
}

.btn:hover,
.btn:focus {
    box-shadow: none;
    background: var(--shadow-color);
    color: var(--bg-color);
}

.about {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    background: var(--second-bg-color);
    flex-wrap: wrap;
}

.about-img img {
    width: 30vw;
    max-width: 260px;
    height: auto;
    border-radius: 15%;
    animation: floatImage 3s ease-in-out infinite;
    will-change: transform;
    display: block;
    margin: 0 auto;
}

.heading {
    text-align: center;
    font-size: 4.5rem;
}

.about-content h3 {
    font-size: 2.5rem;
    line-height: 1.4;
    margin-bottom: 2rem;
    font-weight: 600;
    color: var(--text-color);
}

.about-content p {
    font-size: 1.6rem;
    margin: 2rem 0 3rem;
}

.about-content .btn-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 2rem;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
}

.about-content .btn-container .btn {
    margin: 0;
}

.about-content a {
    margin-right: 2rem;
    margin-bottom: 2rem;
}

.skills h2 {
    margin-bottom: 3rem;
}

/* Skills Category Styling */
.skills-category {
    margin-bottom: 4.5rem;
    width: 100%;
}

.skills-category:last-child {
    margin-bottom: 0;
}

.skills-category-title {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
    padding-bottom: 1rem;
}

.skills-category-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--main-color), transparent);
}

/* Skills Grid - Icon-only layout */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 2rem;
    justify-items: center;
    align-items: start;
    justify-content: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Individual Skill Icon */
.skill-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 2rem;
    background: var(--second-bg-color);
    border-radius: var(--radius);
    border: 2px solid rgba(0, 238, 255, 0.1);
    transition: all var(--transition);
    cursor: pointer;
    width: 100%;
    max-width: 140px;
    min-height: 150px;
    box-sizing: border-box;
    position: relative;
    overflow: hidden;
    margin: 0 auto;
    text-align: center;
}

.skill-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(0, 238, 255, 0.05) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
}

.skill-icon:hover::before {
    opacity: 1;
}

.skill-icon:hover {
    transform: translateY(-8px) scale(1.05);
    border-color: var(--main-color);
    box-shadow: 0 12px 30px rgba(0, 238, 255, 0.3);
    background: linear-gradient(135deg, var(--second-bg-color) 0%, rgba(0, 238, 255, 0.08) 100%);
}

.skill-icon i {
    font-size: 5rem;
    width: 5rem;
    height: 5rem;
    transition: all var(--transition);
    display: block;
    margin: 0 auto;
    text-align: center;
}

/* Icons8 image icons styling */
.skill-icon-img {
    width: 5rem;
    height: 5rem;
    object-fit: contain;
    transition: all var(--transition);
    filter: drop-shadow(0 4px 12px rgba(0, 238, 255, 0.2));
    display: block;
    margin: 0 auto;
    text-align: center;
}

.skill-icon:hover .skill-icon-img {
    transform: scale(1.1);
    filter: drop-shadow(0 6px 16px rgba(0, 238, 255, 0.4));
}

/* Devicons styling */
.skill-icon i[class*="devicon"] {
    filter: drop-shadow(0 4px 12px rgba(0, 238, 255, 0.2));
}

.skill-icon:hover i[class*="devicon"] {
    transform: scale(1.1);
    filter: drop-shadow(0 6px 16px rgba(0, 238, 255, 0.4));
}

.skill-icon span {
    font-size: 1.3rem;
    color: var(--text-color);
    font-weight: 500;
    text-align: center;
    line-height: 1.3;
    transition: color var(--transition);
    word-break: break-word;
    width: 100%;
}

.skill-icon:hover span {
    color: var(--main-color);
}

.portfolio {
    background: var(--second-bg-color);
    background-size: cover;
}

.portfolio h2 {
    margin-bottom: 2rem;
}

.portfolio-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    justify-content: center;
    align-content: center;
}

.portfolio-container .portfolio-box {
    position: relative;
    border-radius: var(--radius);
    box-shadow: 0 0 1rem var(--bg-color);
    overflow: hidden;
    display: flex;
}

.portfolio-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.portfolio-box:hover img,
.portfolio-box:focus-within img {
    transform: scale(1.1);
}

.portfolio-box .portfolio-layer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, .1), var(--main-color));
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    text-align: center;
    padding: 0 2rem;
    transform: translateY(100%);
    transition: transform var(--transition);
}

.portfolio-box:hover .portfolio-layer,
.portfolio-box:focus-within .portfolio-layer {
    transform: translateY(0);
}

.portfolio-layer h4 {
    font-size: 3.2rem;
}

.portfolio-layer p {
    font-size: 1.5rem;
    margin: .3rem 0 .5rem;
}

.portfolio-layer a {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 3.2rem;
    height: 3.2rem;
    background: var(--text-color);
    border-radius: 50%;
    transition: background var(--transition);
}

.portfolio-layer a i {
    font-size: 2rem;
    color: var(--second-bg-color);
}

.contact {
    position: relative;
}

/* Add subtle pattern to contact section for distinction */
.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 80% 20%, rgba(0, 255, 145, 0.02) 0%, transparent 50%),
                radial-gradient(circle at 20% 80%, rgba(0, 255, 145, 0.02) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.contact > * {
    position: relative;
    z-index: 1;
}

.contact h2 {
    margin-bottom: 3rem;
}

.contact form {
    max-width: 70rem;
    margin: 1rem auto 3rem auto;
    text-align: center;
}

.contact form .input-box {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact form .input-wrapper {
    flex: 1 1 48%;
    min-width: 300px;
    margin-bottom: 0.7rem;
}

.contact form .textarea-wrapper {
    flex: 1 1 100%;
    width: 100%;
    margin-bottom: 0.7rem;
}

.contact form .input-box input,
.contact form textarea {
    width: 100%;
    padding: 1.5rem;
    font-size: 1.6rem;
    color: var(--text-color);
    background: var(--bg-color);
    border-radius: .8rem;
    margin: 0.5rem 0 0 0;
    border: 2px solid rgba(0, 238, 255, 0.2);
    transition: all var(--transition);
    font-family: inherit;
    box-sizing: border-box;
}

.contact form .input-box input:focus,
.contact form textarea:focus {
    border-color: var(--main-color);
    background: var(--bg-color);
    box-shadow: 0 0 15px rgba(0, 238, 255, 0.4), 0 0 0 3px rgba(0, 238, 255, 0.1);
    transform: translateY(-2px);
    outline: none;
}

.contact form .input-box input:hover,
.contact form textarea:hover {
    border-color: rgba(0, 238, 255, 0.4);
    background: var(--bg-color);
}

.contact form .input-box input.error,
.contact form textarea.error {
    border-color: #ff4444;
    background: rgba(255, 68, 68, 0.1);
}

.contact form .input-box input.error:focus,
.contact form textarea.error:focus {
    border-color: #ff4444;
    box-shadow: 0 0 15px rgba(255, 68, 68, 0.3), 0 0 0 3px rgba(255, 68, 68, 0.1);
}

.contact form .form-label .required {
    color: #ff4444;
    margin-left: 0.3rem;
    font-weight: bold;
}

.contact form .error-message {
    display: none;
    color: #ff4444;
    font-size: 1.3rem;
    margin-top: 0.5rem;
    padding-left: 0.8rem;
    line-height: 1.4;
}

.contact form .char-count {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    font-size: 1.2rem;
    margin-top: 0.5rem;
    text-align: right;
    padding-right: 0.8rem;
}

.contact form .form-error-message {
    background: rgba(255, 68, 68, 0.15);
    border: 2px solid #ff4444;
    border-radius: 0.8rem;
    padding: 1.2rem;
    margin: 1.5rem 0;
    color: #ffaaaa;
    font-size: 1.5rem;
    text-align: center;
    line-height: 1.5;
}

.contact form textarea {
    resize: vertical;
    min-height: 200px;
}

/* Placeholder styling for better visibility */
.contact form .input-box input::placeholder,
.contact form textarea::placeholder {
    color: rgba(255, 255, 255, 0.5);
    opacity: 1;
}

/* Form labels - ensure visibility on darker background */
.contact form .form-label {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    margin-bottom: 0.5rem;
    display: block;
    font-size: 1.6rem;
}

.contact form .btn {
    margin: 2rem auto 0 auto;
    cursor: pointer;
    display: block;
    width: fit-content;
    background: var(--main-color);
    color: var(--bg-color);
    padding: 1.5rem 4rem;
    font-size: 1.8rem;
    font-weight: 600;
    border-radius: var(--radius);
    transition: all var(--transition);
    border: 2px solid var(--main-color);
    box-shadow: 0 4px 15px rgba(0, 238, 255, 0.3);
}

.contact form .btn:hover,
.contact form .btn:focus {
    background: transparent;
    color: var(--main-color);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 238, 255, 0.5);
}

.footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    padding: 2rem 9%;
    background: var(--bg-color);
}

.footer-text p {
    font-size: 2rem;
}

.footer-iconTop a {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: .8rem;
    background: var(--main-color);
    border-radius: .8rem;
    transition: box-shadow var(--transition);
}

.footer-iconTop a:hover,
.footer-iconTop a:focus {
    box-shadow: 0 0 1rem var(--shadow-color);
}

.footer-iconTop a i {
    font-size: 2.4rem;
    color: var(--second-bg-color);
}

/* Responsive Breakpoints */
@media (max-width: 1440px) {
    html { font-size: 60%; }
}
@media (max-width: 1200px) {
    html { font-size: 55%; }
}
@media (max-width: 1024px) {
    html { font-size: 52%; }
    .header, section, .footer { 
        padding-left: 4%; 
        padding-right: 4%; 
        width: 100%;
        max-width: 100vw;
    }
}
@media (max-width: 991px) {
    .header { 
        padding: 2rem 3%; 
        width: 100%;
        max-width: 100vw;
    }
    section { 
        padding: 10rem 3% 2rem; 
        width: 100%;
        max-width: 100vw;
    }
    .footer { 
        padding: 2rem 3%; 
        width: 100%;
        max-width: 100vw;
    }
}
@media (max-width: 900px) {
    .about, .skills-container { 
        flex-direction: column; 
        align-items: center; 
        text-align: center;
    }
    .about-img img, .home-img img { 
        width: 60vw; 
        max-width: 320px; 
        margin: 0 auto; 
        display: block;
    }
    .about-content {
        text-align: center;
    }
}
@media (max-width: 768px) {
    #menu-icon { display: block; }
    .navbar {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        max-width: 100vw;
        padding: 1rem 3%;
        background: var(--bg-color);
        border-top: .1rem solid rgba(0, 0, 0, 0.2);
        box-shadow: 0 .5rem 1rem rgba(0, 0, 0, 0.2);
        display: none;
    }
    .navbar.active { display: block; }
    .navbar a { display: block; font-size: 2rem; margin: 3rem 0; }
    .home { 
        flex-direction: column; 
        width: 100%;
        max-width: 100vw;
        text-align: center;
    }
    .home-content h3 { font-size: 2.6rem; }
    .home-content h1 { font-size: 4rem; }
    .home-img img, .about-img img { 
        width: 70vw; 
        max-width: 320px; 
        margin: 4rem auto 0 auto; 
        display: block;
    }
    .about { 
        flex-direction: column-reverse; 
        width: 100%;
        max-width: 100vw;
        text-align: center;
        align-items: center;
    }
    .about-img img { 
        width: 70vw; 
        max-width: 260px; 
        margin: 4rem auto 0 auto; 
        display: block;
    }
    .about-content {
        text-align: center;
    }
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 1.5rem;
        justify-items: center;
        justify-content: center;
    }
    
    .skill-icon {
        min-height: 130px;
        margin: 0 auto;
        text-align: center;
    }
    
    .skill-icon i {
        font-size: 4rem;
        margin: 0 auto;
    }
    
    .skill-icon-img {
        margin: 0 auto;
    }
    .portfolio-container { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 617px) {
    .portfolio-container { grid-template-columns: 1fr; }
    .home-img img, .about-img img { 
        width: 90vw; 
        max-width: 320px; 
        margin: 4rem auto 0 auto;
        display: block;
    }
}
@media (max-width: 480px) {
    html { font-size: 50%; }
    .header, section, .footer { 
        padding-left: 2%; 
        padding-right: 2%; 
        width: 100%;
        max-width: 100vw;
    }
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
        gap: 1.2rem;
        padding: 0 1rem;
        justify-items: center;
        justify-content: center;
    }
    
    .skill-icon {
        margin: 0 auto;
        text-align: center;
        padding: 1.2rem;
        min-height: 115px;
    }
    
    .skill-icon i {
        font-size: 3.5rem;
        margin: 0 auto;
        display: block;
    }
    
    .skill-icon-img {
        margin: 0 auto;
        display: block;
    }
    
    .skill-icon span {
        font-size: 1rem;
        text-align: center;
        width: 100%;
    }
    
    .skills-category-title {
        font-size: 2rem;
        margin-bottom: 1.3rem;
    }
    
    .skills-category {
        margin-bottom: 2.5rem;
    }
    .portfolio-layer h4 { font-size: 2rem; }
    .portfolio-layer p { font-size: 1rem; }
}
@media (max-width: 375px) {
    .home-img img, .about-img img { 
        width: 95vw; 
        max-width: 300px;
        margin: 4rem auto 0 auto;
        display: block;
    }
    .footer { flex-direction: column-reverse; }
    .footer p { text-align: center; margin-top: 2rem; }
}

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Focus styles for accessibility */
a:focus, button:focus, .btn:focus {
    outline: 2px solid var(--main-color);
    outline-offset: 2px;
}