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

:root {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --text-primary: #333;
    --text-secondary: #666;
    --accent-color: #4a76ee;
    --accent-hover: #375bb5;
    --border-color: #e9ecef;
    --shadow-sm: 0 4px 15px rgba(0,0,0,0.05);
    --shadow-md: 0 8px 15px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 20px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
}

body.dark-mode {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --accent-color: #6b9aff;
    --accent-hover: #5080e8;
    --border-color: #404040;
    --shadow-sm: 0 4px 15px rgba(0,0,0,0.3);
    --shadow-md: 0 8px 15px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 20px rgba(0,0,0,0.5);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* NAVIGATION BAR */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent-color);
    order: 1;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    margin: 0;
    order: 2;
    flex: 1;
    justify-content: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-color);
}

.theme-toggle {
    background: transparent;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-primary);
    order: 3;
}

.theme-toggle:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    transform: rotate(20deg);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    order: 1;
    z-index: 1001;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition);
    border-radius: 2px;
}

/* SCROLL TO TOP BUTTON */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: var(--accent-hover);
    transform: translateY(-5px);
}

/* LAYOUT CONTAINER */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 80px 20px 20px;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

/* ANIMATIONS */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease;
}

.fade-in-section {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* HEADER / ABOUT AREA */
.header {
    background: var(--bg-secondary);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.profile-area {
    display: flex;
    align-items: center;
    gap: 30px;
}

.profileIMG {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    object-position: top center;
    border: 4px solid var(--accent-color);
}

.introbox h1 {
    font-size: 2.5rem;
    color: var(--text-primary);
}

.introbox .subtitle {
    font-size: 1.2rem;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 10px;
}

/* MAIN CONTENT BLOCKS */
.main {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.section-block {
    background: var(--bg-secondary);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.section-block h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
    color: var(--text-primary);
}

/* REUSABLE GRID LAYOUT */
.grid-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 20px;
}

/* SKILLS SECTION */
.skillset {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 20px;
    justify-content: space-between;
}

.skillcard {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100px;
    height: 100px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.skillcard i {
    font-size: 35px;
}

.skillcard span {
    font-size: 0.85rem;
    font-weight: 500;
    text-align: center;
}

.skillcard:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    color: var(--accent-color);
    border-color: var(--accent-color);
}

/* EDUCATION CARDS */
.educationcard {
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background-color: var(--bg-primary);
    transition: var(--transition);
}

.educationcard h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.educationcard p {
    color: var(--text-secondary);
}

.educationcard:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

/* CERTIFICATIONS & INTERNSHIPS SECTION */
.certifications {
    background: var(--bg-secondary);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.cert-subsection {
    margin-bottom: 40px;
}

.cert-subsection:last-child {
    margin-bottom: 0;
}

.subsection-title {
    font-size: 1.4rem;
    color: var(--accent-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.subsection-title i {
    font-size: 1.2rem;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.certcard {
    padding: 25px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-primary);
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.certcard:hover {
    border-color: var(--accent-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.cert-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}

.cert-icon i {
    font-size: 28px;
    color: white;
}

.certcard h4 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.cert-org {
    font-size: 1rem;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 2px;
}

.cert-year {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 10px;
}

.cert-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 15px;
    flex-grow: 1;
}

.cert-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    align-self: flex-start;
}

.cert-link:hover {
    background: var(--accent-hover);
    transform: translateX(3px);
}

.cert-link i {
    font-size: 0.85rem;
}

/* PROJECT CARDS */
.projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.projectcard {
    border: 1px solid var(--border-color);
    border-radius: 16px;
    background-color: var(--bg-secondary);
    overflow: clip;
    transition: var(--transition);
    position: relative;
    box-shadow: var(--shadow-sm);
    isolation: isolate;
}

.projectcard.hidden-project {
    display: none;
}

.projectcard.show-project {
    display: block;
    animation: fadeIn 0.5s ease;
}

.project-link {
    text-decoration: none;
    color: inherit;
    display: block;
    border-radius: inherit;
    overflow: hidden;
}

.contractual-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(74, 118, 238, 0.95);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 5px;
}

.img-wrapper {
    width: 100%;
    aspect-ratio: 16 / 10;
    min-height: 220px;
    overflow: hidden;
    border-radius: 16px 16px 0 0;
    background: var(--border-color);
    position: relative;
}

.img-wrapper img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center;
    border-radius: inherit;
    transition: var(--transition);
    transform: translateZ(0);
}

/* DESKTOP OVERLAY */
.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.92);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 15px;
    opacity: 0;
    transition: opacity 0.3s ease;
    text-align: center;
    overflow-y: auto;
}

.project-overlay h3 {
    color: white;
    font-size: 1.1rem;
    margin-bottom: 8px;
    line-height: 1.2;
}

.project-overlay .project-desc {
    color: #e0e0e0;
    font-size: 0.8rem;
    line-height: 1.3;
    margin-bottom: 10px;
    max-height: 60px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    justify-content: center;
    margin-bottom: 10px;
    max-width: 100%;
}

.badge {
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 600;
    color: white;
    white-space: nowrap;
}

.badge-mongo { background: #47A248; }
.badge-express { background: #2d2d2d; color: #ffffff; border: 1px solid rgba(255,255,255,0.15); }
.badge-react { background: #61DAFB; color: #000; }
.badge-node { background: #339933; }
.badge-phaser { background: linear-gradient(135deg, #8a2be2, #4b0082); color: #ffffff; }
.badge-js { background: #F7DF1E; color: #000; }
.badge-html { background: #E34F26; }
.badge-css { background: #1572B6; }
.badge-cloudinary { background: #3448C5; }
.badge-zego { background: #FF6B00; }
.badge-whatsapp { background: #25D366; }
.badge-peer { background: #9B59B6; }
.badge-Gemini { background: #FF6B00; }
.badge-next { background: #202020e3; color: #fff; }
.badge-WebRTC { background: #4CAF50; color: #fff; }

.visit-btn {
    display: inline-block;
    padding: 8px 20px;
    background: var(--accent-color);
    color: white;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.85rem;
    transition: var(--transition);
    margin-top: 5px;
}

.visit-btn:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
}

/* MOBILE INFO (Hidden on Desktop) */
.project-info-mobile {
    padding: 15px;
    display: none;
}

.project-info-mobile h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.project-desc-mobile {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.4;
}

.tech-badges-mobile {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.badge-mobile {
    padding: 4px 8px;
    background: var(--accent-color);
    color: white;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* HOVER EFFECTS (Desktop Only) */
@media (min-width: 769px) {
    .projectcard:hover .project-overlay {
        opacity: 1;
    }
    
    .projectcard:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-5px);
    }
    
    .projectcard:hover img {
        transform: scale(1.05);
    }
}

/* LOAD MORE BUTTON */
.load-more-container {
    text-align: center;
    margin-top: 30px;
}

.load-more-btn {
    padding: 15px 40px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.load-more-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.remaining-count {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* CONTACT FORM */
.contactform {
    display: flex;
    flex-direction: column;
    max-width: 600px;
    margin-top: 20px;
}

.contactform label {
    font-weight: 600;
    margin-bottom: 5px;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.contactform input, 
.contactform textarea {
    padding: 12px;
    margin-bottom: 5px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    resize: vertical;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
}

.contactform input:focus, 
.contactform textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(74, 118, 238, 0.2);
}

.contactform input.error,
.contactform textarea.error {
    border-color: #e74c3c;
}

.contactform input.success,
.contactform textarea.success {
    border-color: #2ecc71;
}

.error-message {
    color: #e74c3c;
    font-size: 0.85rem;
    margin-bottom: 15px;
    display: block;
    min-height: 20px;
}

.contactform button {
    padding: 15px;
    border: none;
    border-radius: 6px;
    background-color: var(--accent-color);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 10px;
}

.contactform button:hover:not(:disabled) {
    background-color: var(--accent-hover);
}

.contactform button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.form-feedback {
    margin-top: 15px;
    padding: 12px;
    border-radius: 6px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-feedback.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.form-feedback.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

/* FOOTER */
.footer {
    text-align: center;
    padding: 30px;
    background-color: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.socialbox {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 20px;
}

.socialbox .media {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--text-secondary);
    transition: var(--transition);
}

.socialbox .media i {
    font-size: 28px;
    margin-bottom: 8px;
}

.socialbox .media:hover {
    color: var(--accent-color);
    transform: translateY(-3px);
}

/* RESPONSIVE QUERIES */
@media (min-width: 769px) {
    .nav-brand {
        order: 1;
        /* flex: 0; */
        text-align: left;
    }
    
    .nav-menu {
        order: 2;
        flex: 1;
        justify-content: center;
    }
    
    .theme-toggle {
        order: 3;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 15px 20px;
    }
    
    .nav-brand {
        order: 2;
        flex: 1;
        text-align: center;
        font-size: 1.2rem;
    }
    
    .nav-toggle {
        order: 1;
    }
    
    .theme-toggle {
        order: 3;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background: var(--bg-secondary);
        padding: 20px;
        box-shadow: var(--shadow-md);
        transition: left 0.3s ease;
        gap: 15px;
        order: 4;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .container {
        padding: 70px 15px 15px;
        gap: 20px;
    }

    .profile-area {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .section-block {
        padding: 25px 20px;
    }

    .section-block h2 {
        font-size: 1.6rem;
    }
    
    .skillset {
        justify-content: center;
    }

    .profileIMG {
        width: 140px;
        height: 140px;
        object-fit: cover; 
        object-position: center 15%; 
        margin-top: -20px; 
    }

    .introbox h1 {
        font-size: 2rem;
    }

    .grid-container {
        grid-template-columns: 1fr;
    }
    
    .cert-grid {
        grid-template-columns: 1fr;
    }
    
    .cert-subsection {
        margin-bottom: 30px;
    }
    
    .subsection-title {
        font-size: 1.2rem;
    }
    
    .certcard {
        padding: 20px;
    }
    
    .cert-icon {
        width: 50px;
        height: 50px;
    }
    
    .cert-icon i {
        font-size: 24px;
    }
    
    .projects-grid {
        grid-template-columns: minmax(0, 1fr);
        width: 100%;
        max-width: 100%;
        justify-items: stretch;
        align-items: stretch;
    }

    .projectcard {
        width: 100%;
        max-width: 100%;
        min-width: 0;
        box-sizing: border-box;
    }

    .project-link,
    .img-wrapper,
    .project-info-mobile {
        width: 100%;
        max-width: 100%;
    }
    
    /* Mobile: Show badge system, hide overlay */
    .project-overlay {
        display: none;
    }
    
    .project-info-mobile {
        display: block;
    }
    
    .scroll-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
    
    .load-more-btn {
        width: 100%;
        padding: 15px 20px;
    }
}