/* =========================================================
   AMAN KKUMAR — PORTFOLIO
   Responsive Stylesheet
   Mobile • Tablet • Desktop Optimization
   ========================================================= */


/* =========================================================
   1. TABLETS & SMALL LAPTOPS (1024px - 1100px)
   ========================================================= */

@media (max-width: 1100px) {
    
    .hero-container {
        grid-template-columns: 1fr 0.9fr;
        gap: 60px;
    }

    .hero-title {
        font-size: clamp(2.5rem, 6vw, 4.5rem);
    }

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

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

    .about-content {
        gap: 60px;
    }
}


/* =========================================================
   2. TABLETS (768px - 900px)
   ========================================================= */

@media (max-width: 900px) {

    /* -------- Global -------- */
    
    .section-container {
        padding: 0 30px;
    }

    .section {
        padding: 100px 0;
    }

    /* -------- Navigation -------- */

    .nav-links {
        gap: 20px;
    }

    .nav-links a {
        font-size: 0.85rem;
    }

    /* -------- Hero -------- */

    .hero {
        padding-top: 100px;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 50px;
        text-align: center;
    }

    .hero-content {
        align-items: center;
    }

    .hero-label {
        justify-content: center;
    }

    .hero-title {
        font-size: clamp(2.2rem, 8vw, 4rem);
    }

    .hero-buttons {
        justify-content: center;
        flex-direction: column;
        align-items: center;
        max-width: 300px;
        margin: 0 auto;
    }

    .btn {
        width: 100%;
    }

    .hero-visual {
        height: 400px;
    }

    .profile-frame {
        width: 280px;
        height: 280px;
    }

    /* -------- About -------- */

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .about-left {
        position: static;
    }

    .about-image {
        max-width: 250px;
        margin: 0 auto;
    }

    .about-right {
        align-items: center;
    }

    .about-block {
        text-align: left;
    }

    /* -------- Skills -------- */

    .skills-map {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    /* -------- Building -------- */

    .roadmap {
        padding-left: 30px;
    }

    .roadmap-item::before {
        left: -38px;
    }

    /* -------- Projects -------- */

    .project-lab {
        padding: 40px;
    }

    .lab-tags {
        flex-wrap: wrap;
    }

    /* -------- Approach -------- */

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

    /* -------- Contact -------- */

    .contact-cards {
        grid-template-columns: 1fr;
    }

    /* -------- Footer -------- */

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }

    .footer-content > div:last-child {
        text-align: center;
    }
}


/* =========================================================
   3. MOBILE DEVICES (480px - 768px)
   ========================================================= */

@media (max-width: 768px) {

    /* -------- Global -------- */

    .section-container {
        padding: 0 20px;
    }

    .section {
        padding: 80px 0;
    }

    .section::before {
        display: none;
    }

    /* -------- Header -------- */

    .site-header {
        height: auto;
    }

    .navbar {
        height: 64px;
        padding: 0 20px;
    }

    .brand {
        font-size: 1rem;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 64px;
        left: 10px;
        right: 10px;
        flex-direction: column;
        gap: 0;
        padding: 12px;
        background: rgba(5, 7, 11, 0.95);
        border: 1px solid var(--border-light);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-lg);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
        z-index: 999;
    }

    .nav-links.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-links a {
        padding: 12px 16px;
        display: block;
        border-radius: var(--radius-sm);
        font-size: 0.9rem;
        color: var(--text-secondary);
    }

    .nav-links a:hover {
        background: rgba(34, 211, 238, 0.1);
        color: var(--text-primary);
    }

    .nav-links a::after {
        display: none;
    }

    .nav-links a.active {
        background: rgba(34, 211, 238, 0.15);
        color: var(--accent-cyan);
    }

    /* -------- Hero -------- */

    .hero {
        padding-top: 80px;
        padding-bottom: 60px;
    }

    .hero::after {
        right: -200px;
        width: 400px;
        height: 400px;
    }

    .hero-label {
        font-size: 0.8rem;
    }

    .hero-title {
        font-size: clamp(2rem, 10vw, 3.5rem);
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-description {
        font-size: 0.95rem;
        max-width: 100%;
    }

    .hero-buttons {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        max-width: 100%;
    }

    .btn {
        min-height: 44px;
        font-size: 0.9rem;
    }

    .hero-status {
        font-size: 0.8rem;
        justify-content: center;
    }

    .hero-tagline {
        font-size: 0.75rem;
    }

    .hero-visual {
        height: 350px;
    }

    .profile-frame {
        width: 260px;
        height: 260px;
        box-shadow: 0 0 30px rgba(34, 211, 238, 0.15);
    }

    .outer-ring {
        width: 360px;
        height: 360px;
    }

    .inner-ring {
        width: 240px;
        height: 240px;
    }

    .tech-label {
        font-size: 0.65rem;
        opacity: 0.3;
    }

    /* -------- Section Header -------- */

    .section-header {
        margin-bottom: 45px;
        text-align: center;
    }

    .section-header h2 {
        font-size: clamp(1.6rem, 6vw, 2.5rem);
    }

    .section-header > p {
        font-size: 0.9rem;
    }

    .label-number {
        font-size: 2rem;
    }

    .label-text {
        font-size: 0.7rem;
    }

    /* -------- About -------- */

    .about-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .about-image {
        max-width: 200px;
    }

    .about-block {
        padding: 20px;
    }

    .about-block h3 {
        font-size: 1rem;
    }

    .about-block p {
        font-size: 0.9rem;
    }

    /* -------- Skills -------- */

    .skills-map {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .skill-category {
        padding: 20px;
    }

    .category-title {
        font-size: 0.7rem;
        margin-bottom: 12px;
    }

    .skill-item {
        font-size: 0.85rem;
        gap: 8px;
    }

    .skill-icon {
        font-size: 1rem;
        flex-shrink: 0;
    }

    /* -------- Building -------- */

    .roadmap {
        padding-left: 24px;
    }

    .roadmap::before {
        width: 2px;
        left: -2px;
    }

    .roadmap-item {
        padding: 24px;
        margin-bottom: 24px;
    }

    .roadmap-item::before {
        left: -30px;
        width: 10px;
        height: 10px;
    }

    .roadmap-number {
        font-size: 1.8rem;
    }

    .roadmap-content h3 {
        font-size: 1.05rem;
    }

    .roadmap-content p {
        font-size: 0.9rem;
    }

    .roadmap-status {
        font-size: 0.65rem;
        padding: 5px 10px;
    }

    /* -------- Projects -------- */

    .project-lab {
        padding: 35px 25px;
        min-height: 350px;
    }

    .lab-icon {
        font-size: 2.5rem;
        margin-bottom: 15px;
    }

    .project-lab h3 {
        font-size: 1.5rem;
    }

    .project-lab p {
        font-size: 0.9rem;
    }

    .lab-tags {
        gap: 8px;
    }

    .lab-tags span {
        font-size: 0.75rem;
        padding: 6px 12px;
    }

    /* -------- Approach -------- */

    .approach-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .approach-card {
        padding: 24px;
    }

    .approach-num {
        font-size: 2rem;
    }

    .approach-card h3 {
        font-size: 1rem;
    }

    .approach-card p {
        font-size: 0.9rem;
    }

    .approach-tagline {
        font-size: 0.9rem;
    }

    /* -------- Contact -------- */

    .contact-section .section-header {
        margin-bottom: 40px;
    }

    .contact-section .section-header h2 {
        font-size: clamp(1.6rem, 6vw, 2.2rem);
    }

    .contact-section .section-header > p {
        font-size: 0.9rem;
    }

    .contact-cards {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .contact-card {
        padding: 20px;
        min-height: auto;
    }

    .contact-icon {
        width: 44px;
        height: 44px;
        flex-shrink: 0;
    }

    .contact-label {
        font-size: 0.7rem;
    }

    .contact-value {
        font-size: 0.9rem;
    }

    /* -------- Footer -------- */

    .site-footer {
        padding: 50px 0;
    }

    .footer-container {
        padding: 0 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 24px;
    }

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

    .footer-content p {
        font-size: 0.85rem;
    }
}


/* =========================================================
   4. SMALL MOBILE DEVICES (360px - 480px)
   ========================================================= */

@media (max-width: 480px) {

    /* -------- Global -------- */

    .section-container {
        padding: 0 16px;
    }

    .section {
        padding: 70px 0;
    }

    /* -------- Header -------- */

    .navbar {
        padding: 0 16px;
    }

    .brand {
        font-size: 0.95rem;
    }

    /* -------- Hero -------- */

    .hero {
        padding-top: 70px;
        padding-bottom: 50px;
    }

    .hero::after {
        right: -250px;
        width: 350px;
        height: 350px;
    }

    .hero-title {
        font-size: clamp(1.8rem, 8vw, 3rem);
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-description {
        font-size: 0.9rem;
        line-height: 1.6;
    }

    .hero-visual {
        height: 300px;
    }

    .profile-frame {
        width: 220px;
        height: 220px;
    }

    .outer-ring {
        width: 300px;
        height: 300px;
    }

    .inner-ring {
        width: 200px;
        height: 200px;
    }

    .frame-node {
        width: 5px;
        height: 5px;
    }

    /* -------- Section Header -------- */

    .section-header {
        margin-bottom: 35px;
    }

    .section-header h2 {
        font-size: clamp(1.4rem, 5vw, 2.2rem);
        line-height: 1.15;
    }

    .label-number {
        font-size: 1.5rem;
    }

    /* -------- About -------- */

    .about-image {
        max-width: 180px;
    }

    .about-block {
        padding: 16px;
    }

    .about-block h3 {
        font-size: 0.95rem;
        margin-bottom: 8px;
    }

    .about-block p {
        font-size: 0.85rem;
        line-height: 1.5;
    }

    /* -------- Skills -------- */

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

    .skill-category {
        padding: 16px;
    }

    .category-title {
        font-size: 0.65rem;
    }

    .skill-item {
        font-size: 0.8rem;
    }

    /* -------- Building -------- */

    .roadmap {
        padding-left: 20px;
    }

    .roadmap-item {
        padding: 18px;
        margin-bottom: 20px;
    }

    .roadmap-item::before {
        left: -26px;
    }

    .roadmap-number {
        font-size: 1.5rem;
        margin-bottom: 8px;
    }

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

    .roadmap-content p {
        font-size: 0.85rem;
    }

    /* -------- Projects -------- */

    .project-lab {
        padding: 30px 20px;
        min-height: 300px;
    }

    .lab-icon {
        font-size: 2rem;
    }

    .project-lab h3 {
        font-size: 1.3rem;
    }

    .project-lab p {
        font-size: 0.85rem;
    }

    .lab-tags {
        gap: 6px;
    }

    .lab-tags span {
        font-size: 0.7rem;
        padding: 5px 10px;
    }

    /* -------- Approach -------- */

    .approach-card {
        padding: 18px;
    }

    .approach-num {
        font-size: 1.5rem;
        margin-bottom: 8px;
    }

    .approach-card h3 {
        font-size: 0.95rem;
    }

    .approach-card p {
        font-size: 0.85rem;
    }

    .approach-tagline {
        font-size: 0.85rem;
    }

    /* -------- Contact -------- */

    .contact-card {
        padding: 16px;
        gap: 12px;
    }

    .contact-icon {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
    }

    .contact-label {
        font-size: 0.65rem;
    }

    .contact-value {
        font-size: 0.85rem;
    }

    /* -------- Footer -------- */

    .footer-content {
        gap: 16px;
    }

    .footer-content h3 {
        font-size: 0.95rem;
    }

    .footer-content p {
        font-size: 0.8rem;
    }
}


/* =========================================================
   5. VERY SMALL DEVICES (< 360px)
   ========================================================= */

@media (max-width: 360px) {

    .section-container {
        padding: 0 12px;
    }

    .hero-title {
        font-size: clamp(1.6rem, 7vw, 2.8rem);
    }

    .section-header h2 {
        font-size: clamp(1.2rem, 5vw, 2rem);
    }

    .profile-frame {
        width: 200px;
        height: 200px;
    }

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

    .roadmap {
        padding-left: 16px;
    }

    .roadmap-item::before {
        left: -22px;
    }
}


/* =========================================================
   6. ACCESSIBILITY: REDUCED MOTION
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}