/* ===========================
   RESPONSIVE DESIGN
   =========================== */

/* Medium Devices (Desktop/Tablet transitions, 992px and below) */
@media (max-width: 992px) {
    .awards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablet (768px and below) */
@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
        font-size: 0.95rem;
    }

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

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .hero-image {
        display: none;
    }

    .hero-content {
        grid-template-columns: 1fr;
    }

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

    .about-stats {
        grid-template-columns: 1fr 1fr;
    }

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

    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        display: block;
    }

    .timeline-item:nth-child(even) .timeline-content,
    .timeline-item:nth-child(odd) .timeline-content {
        margin-left: 80px;
        margin-right: 0;
        padding-left: 0;
        width: auto;
    }

    .timeline-marker {
        left: 30px;
    }

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

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

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

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

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

    .cta h2 {
        font-size: 1.8rem;
    }

    .cta p {
        font-size: 1rem;
    }

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

/* Mobile (480px and below) */
@media (max-width: 480px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--dark-bg);
        width: 100%;
        text-align: center;
        transition: left 0.3s;
        gap: 0;
        border-bottom: 1px solid var(--border-color);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        display: block;
        padding: 1rem;
    }

    .logo h1 {
        font-size: 1.3rem;
    }

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

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

    .hero-description {
        font-size: 0.95rem;
    }

    .hero-buttons {
        gap: 1rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .stat {
        padding: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
        margin-bottom: 2rem;
    }

    .tabs {
        gap: 0.5rem;
    }

    .tab-btn {
        padding: 0.8rem 1rem;
        font-size: 0.9rem;
    }

    .timeline-content {
        padding: 1.5rem;
    }

    .award-card {
        padding: 1.5rem;
    }

    .skill-category {
        padding: 1.5rem;
    }

    .projects-filter {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .cta h2 {
        font-size: 1.5rem;
    }

    .cta p {
        font-size: 0.95rem;
    }

    .cta-content {
        padding: 2rem 0;
    }

    .footer-section {
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}

/* Extra small devices (320px and below) */
@media (max-width: 320px) {
    .hero-text h1 {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

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

    .btn {
        padding: 8px 15px;
        font-size: 0.85rem;
    }
}

/* High resolution displays */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }

    section {
        padding: 100px 0;
    }
}

/* Landscape orientation */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 50px 0;
    }

    section {
        padding: 40px 0;
    }
}

/* Dark mode (already using dark theme by default) */
@media (prefers-color-scheme: light) {
    :root {
        --dark-bg: #f8fafc;
        --light-bg: #ffffff;
        --card-bg: #ffffff;
        --text-primary: #0f172a;
        --text-secondary: #475569;
        --border-color: #e2e8f0;
        --shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
        --shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.05);
        --nav-bg: rgba(248, 250, 252, 0.95);
        --nav-border: rgba(226, 232, 240, 0.8);
    }

    .hero-image-placeholder {
        color: rgba(0, 0, 0, 0.1);
    }
}

/* Animations for reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print styles */
@media print {
    nav,
    .hero-buttons,
    .projects-filter,
    .cta,
    footer {
        display: none;
    }

    section {
        padding: 20px 0;
        page-break-inside: avoid;
    }

    .project-card,
    .award-card {
        page-break-inside: avoid;
    }
}