/* ===================================================
   MOHAMED SAYED — FLUTTER DEVELOPER PORTFOLIO (2026)
   Style Sheet: Responsive Layouts & Breakpoints
   Breakpoints: 1200px, 992px, 768px, 576px
   =================================================== */

/* ===================================================
   LARGE SCREENS & LAPTOPS (<= 1200px)
   =================================================== */
@media (max-width: 1200px) {
    :root {
        --container-max: 980px;
    }

    .hero-title {
        font-size: 3.5rem;
    }

    .profile-container {
        width: 380px;
        height: 380px;
    }

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

/* ===================================================
   TABLETS & MEDIUM SCREENS (<= 992px)
   =================================================== */
@media (max-width: 992px) {
    :root {
        --container-max: 720px;
        --header-height: 72px;
    }

    .section {
        padding: 85px 0;
    }

    /* Header & Mobile Nav Transition */
    .menu-toggle {
        display: flex;
        z-index: 1002;
    }

    .site-nav {
        position: fixed;
        top: 0;
        right: 0;
        width: 320px;
        max-width: 85vw;
        height: 100vh;
        background: rgba(8, 8, 8, 0.98);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        border-left: 1px solid rgba(255, 0, 0, 0.3);
        padding: 100px 30px 40px;
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        gap: 24px;
        box-shadow: -15px 0 40px rgba(0, 0, 0, 0.9);
        transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 1001;
        overflow-y: auto;
    }

    .site-nav.is-open {
        transform: translateX(0);
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        gap: 8px;
    }

    .nav-link {
        font-size: 1.15rem;
        padding: 12px 16px;
        width: 100%;
        border-radius: var(--radius-md);
    }

    .nav-link.active::after {
        left: 0;
        transform: none;
        width: 4px;
        height: 60%;
        top: 20%;
        bottom: auto;
    }

    .header-actions .btn {
        display: none;
    }

    .nav-cta-mobile {
        display: inline-flex !important;
        width: 100%;
        margin-top: 10px;
    }

    /* Mobile Nav Overlay Backdrop */
    .nav-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.7);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
        z-index: 1000;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    .nav-backdrop.is-active {
        opacity: 1;
        visibility: visible;
    }

    /* Hero Section */
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 50px;
        text-align: center;
    }

    .hero-content {
        order: 2;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .hero-visual {
        order: 1;
    }

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

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

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

    /* About Section */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 45px;
        text-align: center;
    }

    .about-visual {
        margin: 0 auto;
    }

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        width: 100%;
    }

    /* Skills Grid */
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Services Grid */
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Contact Section */
    .contact-cards-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

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

    .form-group.full-width {
        grid-column: 1;
    }
}

/* ===================================================
   MOBILE DEVICES (<= 768px)
   =================================================== */
@media (max-width: 768px) {
    :root {
        --container-max: 100%;
    }

    .section {
        padding: 75px 0;
    }

    .hero-title {
        font-size: 2.8rem;
    }

    .profile-container {
        width: 320px;
        height: 320px;
    }

    .floating-badge {
        padding: 8px 12px;
    }

    .floating-badge-1 {
        top: 0;
        left: -10px;
    }

    .floating-badge-2 {
        bottom: 10px;
        right: -10px;
    }

    .floating-badge-3 {
        display: none;
    }

    .about-img-container {
        width: 300px;
        height: 300px;
    }

    /* Experience Timeline Adapts to Left Line */
    .timeline-container::before {
        left: 20px;
        transform: none;
    }

    .timeline-item {
        width: 100%;
        left: 0 !important;
        padding-left: 55px !important;
        padding-right: 0 !important;
        margin-bottom: 36px;
    }

    .timeline-dot {
        left: 12px !important;
        right: auto !important;
    }

    .timeline-card {
        padding: 22px 20px;
    }

    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }

    /* Skills Grid */
    .skills-grid {
        grid-template-columns: 1fr;
    }

    /* Projects Grid */
    .projects-grid {
        grid-template-columns: 1fr;
    }

    /* Services Grid */
    .services-grid {
        grid-template-columns: 1fr;
    }

    /* Testimonial Slide */
    .testimonial-slide {
        padding: 35px 24px;
    }

    .testimonial-quote {
        font-size: 1.05rem;
    }

    /* Footer */
    .footer-top {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 16px;
    }
}

/* ===================================================
   SMALL PHONES (<= 576px)
   =================================================== */
@media (max-width: 576px) {
    .container {
        padding-left: 18px;
        padding-right: 18px;
    }

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

    .hero-title {
        font-size: 2.3rem;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .profile-container {
        width: 270px;
        height: 270px;
    }

    .floating-badge {
        display: none;
    }

    .about-img-container {
        width: 260px;
        height: 260px;
    }

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

    .project-actions {
        flex-direction: column;
    }

    .project-actions .btn {
        width: 100%;
    }

    .inquiry-form-card {
        padding: 24px 18px;
    }

    .form-submit-row .btn {
        width: 100%;
    }

    .slider-nav {
        gap: 12px;
    }
}