/* Responsive Design for Portfolio */

/* Tablet styles (768px - 1024px) */
@media screen and (max-width: 1024px) {
    :root {
        --content-padding: 1.5rem;
        --section-spacing: 4rem;
        --card-padding: 1.5rem;
    }
    
    .container {
        padding: 0 var(--content-padding);
    }
    
    .hero h1 {
        font-size: 3.5rem;
    }
    
    .subtitle {
        font-size: 1.3rem;
    }
    
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .skills-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 2.5rem;
    }
    
    .contact-methods {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }
    
    .project-image {
        height: 200px;
    }
    
    .expertise-card {
        padding: 2rem;
    }
}

/* Mobile styles (max-width: 768px) */
@media screen and (max-width: 768px) {
    :root {
        --content-padding: 1.25rem;
        --section-spacing: 3.5rem;
        --card-padding: 1.25rem;
    }
    
    /* Typography adjustments */
    h1 { 
        font-size: 2.8rem; 
        letter-spacing: -0.02em;
    }
    
    h2 { 
        font-size: 2rem; 
    }
    
    h3 { 
        font-size: 1.6rem; 
    }
    
    .section-title {
        font-size: 2rem;
        margin-bottom: 2.5rem;
    }
    
    .section-title::after {
        margin: 1rem auto 0;
    }
    
    /* Container padding */
    .container {
        padding: 0 var(--content-padding);
    }
    
    .section {
        padding: var(--section-spacing) 0;
    }
    
    /* Navigation adjustments */
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 100%;
        max-width: 300px;
        background: rgba(26, 54, 93, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: right 0.4s cubic-bezier(0.77, 0, 0.175, 1);
        z-index: 999;
        gap: 1.5rem;
        padding: 2rem;
    }
    
    .nav-links.nav-active {
        right: 0;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.2);
    }
    
    .nav-links li {
        margin: 0.7rem 0;
        opacity: 0;
        transform: translateX(50px);
        transition: all 0.4s ease 0.2s;
    }
    
    .nav-links.nav-active li {
        opacity: 1;
        transform: translateX(0);
    }
    
    .nav-link {
        font-size: 1.3rem;
        width: 100%;
        text-align: center;
        padding: 0.7rem 0;
    }
    
    .nav-link::after {
        height: 3px;
    }
    
    .burger {
        display: flex;
    }
    
    .burger.toggle .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .burger.toggle .line2 {
        opacity: 0;
    }
    
    .burger.toggle .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    
    /* Hero section */
    .hero {
        padding: 7rem 0 5rem;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 2.8rem;
        margin-bottom: 1rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
        margin-bottom: 1rem;
    }
    
    .tagline {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .btn {
        width: 100%;
        max-width: 250px;
        justify-content: center;
    }
    
    /* About section */
    .about-text p {
        font-size: 1rem;
    }
    
    .highlight-box {
        padding: 1.8rem;
        margin: 2rem 0;
    }
    
    /* Expertise grid */
    .expertise-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .expertise-card {
        padding: 2rem;
    }
    
    .expertise-icon {
        font-size: 2.8rem;
    }
    
    /* Project filters */
    .project-filters {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
    }
    
    .filter-btn {
        width: 100%;
        text-align: center;
        padding: 0.7rem 1rem;
    }
    
    /* Projects grid */
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .project-card {
        margin: 0 auto;
        max-width: 400px;
    }
    
    .project-image {
        height: 200px;
    }
    
    .project-content {
        padding: 1.5rem;
    }
    
    .project-content h3 {
        font-size: 1.3rem;
    }
    
    .project-content p {
        font-size: 1rem;
    }
    
    .project-tech {
        margin-bottom: 1.5rem;
    }
    
    /* Skills section */
    .skills-container {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .skill-category h3 {
        font-size: 1.4rem;
        text-align: center;
        margin-bottom: 1.5rem;
    }
    
    .skill-category h3::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    /* Contact section */
    .contact-content p {
        font-size: 1rem;
    }
    
    .contact-methods {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .contact-method {
        padding: 1.5rem;
        flex-direction: row;
        text-align: left;
        gap: 1rem;
    }
    
    .contact-icon {
        font-size: 1.5rem;
        width: 50px;
        height: 50px;
    }
    
    /* Footer */
    footer .container {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

/* Small mobile styles (max-width: 480px) */
@media screen and (max-width: 480px) {
    :root {
        --content-padding: 1rem;
        --section-spacing: 3rem;
        --card-padding: 1rem;
    }
    
    /* Further typography reduction */
    .hero h1 {
        font-size: 2.3rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    /* Tighter spacing */
    .container {
        padding: 0 var(--content-padding);
    }
    
    .section {
        padding: var(--section-spacing) 0;
    }
    
    /* Hero adjustments */
    .hero {
        padding: 6rem 0 4rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .tagline {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
    }
    
    /* Cards and content */
    .expertise-card {
        padding: 1.5rem;
    }
    
    .project-content {
        padding: 1.2rem;
    }
    
    .project-content h3 {
        font-size: 1.2rem;
        margin-bottom: 0.8rem;
    }
    
    .project-content p {
        font-size: 0.95rem;
        margin-bottom: 1.2rem;
    }
    
    .highlight-box {
        padding: 1.5rem;
    }
    
    .contact-method {
        padding: 1.2rem;
    }
    
    /* Project filters */
    .project-filters {
        grid-template-columns: 1fr;
    }
    
    .filter-btn {
        padding: 0.6rem 1rem;
    }
    
    /* Button adjustments */
    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.95rem;
    }
}

/* Project detail page responsive styles */
@media screen and (max-width: 768px) {
    .project-detail {
        padding: 2rem 0;
    }
    
    .project-showcase {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .project-image-showcase {
        order: -1;
    }
    
    .project-title h1 {
        font-size: 2rem;
    }
    
    .project-metadata {
        flex-direction: column;
        gap: 0.8rem;
        align-items: flex-start;
    }
    
    .project-details {
        margin-top: 2rem;
    }
    
    .code-snippet-preview {
        margin: 1rem 0;
    }
    
    .code-snippet-preview pre {
        padding: 1rem;
        font-size: 0.85rem;
        overflow-x: auto;
    }
    
    .implementation-section {
        margin-bottom: 2.5rem;
    }
    
    .implementation-section h3 {
        font-size: 1.3rem;
    }
}

/* Demo page responsive styles */
@media screen and (max-width: 1024px) {
    .demo-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 1.5rem;
    }
    
    .chart-container,
    .controls-container {
        max-width: 100%;
    }
}

@media screen and (max-width: 768px) {
    .demo-container {
        padding: 1.2rem;
    }
    
    .chart-area {
        height: 300px;
        padding-left: 40px;
    }
    
    .price-axis {
        width: 40px;
    }
    
    .price-label {
        font-size: 0.7rem;
        right: 5px;
        padding: 1px 2px;
    }
    
    .time-label {
        font-size: 0.65rem;
    }
    
    .controls-container {
        padding: 1.2rem;
    }
    
    .control-group select,
    .control-group input {
        padding: 0.6rem;
        font-size: 0.95rem;
    }
    
    .price-inputs {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }
    
    .action-buttons {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }
    
    .btn {
        padding: 0.8rem;
    }
    
    .feedback {
        padding: 0.8rem;
        font-size: 0.95rem;
    }
    
    .attempts {
        font-size: 0.85rem;
        text-align: center;
        margin-top: 0.8rem;
    }
}

@media screen and (max-width: 480px) {
    .demo-header {
        padding: 1.5rem 0;
    }
    
    .demo-header h1 {
        font-size: 1.8rem;
    }
    
    .demo-subtitle {
        font-size: 0.9rem;
    }
    
    .chart-area {
        height: 250px;
        padding-left: 35px;
    }
    
    .price-axis {
        width: 35px;
    }
    
    .price-label {
        font-size: 0.6rem;
        right: 2px;
    }
    
    .time-label {
        font-size: 0.6rem;
    }
    
    .controls-container {
        padding: 1rem;
        gap: 1rem;
    }
    
    .control-group label {
        font-size: 0.9rem;
    }
}

/* High DPI displays */
@media screen and (min-resolution: 2dppx) {
    .project-image img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .project-card {
        background: #2d3748;
        color: #f7fafc;
    }
    
    .contact-method {
        background: #2d3748;
        color: #f7fafc;
    }
    
    .highlight-box {
        background: #2d3748;
        color: #f7fafc;
    }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .fade-in,
    .fade-in-delay-1,
    .fade-in-delay-2,
    .fade-in-delay-3 {
        animation: none;
        opacity: 1;
    }
}

/* Print styles */
@media print {
    .burger,
    .nav-links,
    footer,
    .cta-buttons,
    .project-filters,
    .social-links {
        display: none !important;
    }
    
    .header {
        background: white !important;
        color: black !important;
        min-height: auto !important;
    }
    
    .section {
        padding: 1rem 0 !important;
        page-break-after: always;
    }
    
    .section-dark {
        background: white !important;
        color: black !important;
    }
    
    a {
        color: black !important;
        text-decoration: underline !important;
    }
    
    .project-card,
    .expertise-card,
    .contact-method {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}