/* ============================================
   RESPONSIVE.CSS — Mobile-First Breakpoints
   ============================================ */

/* — Base: Mobile (<640px) — */

/* Navigation */
.nav-links {
    display: none;
}

.nav-socials {
    display: none;
}

.hamburger {
    display: flex;
}

.mobile-drawer,
.mobile-menu-overlay {
    display: block;
}

/* Hero */
.hero-content {
    flex-direction: column;
    text-align: center;
    gap: 40px;
    padding-top: 100px;
}

.hero-text {
    order: 2;
}

.hero-visual {
    order: 1;
}

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

/* About */
.about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
}

.about-visual {
    order: -1;
}

/* Projects Grid */
.projects-grid {
    grid-template-columns: 1fr;
    gap: 20px;
}

/* Filter Bar */
.filter-bar {
    flex-wrap: wrap;
    gap: 8px;
}

.filter-btn {
    padding: 8px 16px;
    font-size: 0.8rem;
}

/* Project Detail */
.project-detail-header {
    flex-direction: column;
    gap: 20px;
}

.project-meta {
    flex-wrap: wrap;
}

/* Contact */
.contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
}

/* Section padding */
.section {
    padding: 60px 0;
}

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

/* Container */
.container {
    padding: 0 16px;
}

/* Nav */
#main-nav {
    padding: 0 16px;
}

/* — Tablet (≥640px) — */
@media (min-width: 640px) {
    .container {
        padding: 0 24px;
    }

    .section {
        padding: 80px 0;
    }

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

    .hero-content {
        padding-top: 120px;
    }

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

/* — Desktop (≥1024px) — */
@media (min-width: 1024px) {

    /* Show desktop nav, hide mobile */
    .nav-links {
        display: flex;
    }

    .nav-socials {
        display: flex;
    }

    .hamburger {
        display: none;
    }

    .mobile-drawer,
    .mobile-menu-overlay {
        display: none !important;
    }

    #main-nav {
        padding: 0 40px;
    }

    .section {
        padding: 100px 0;
    }

    .section-header {
        margin-bottom: 60px;
    }

    /* Hero */
    .hero-content {
        flex-direction: row;
        text-align: left;
        gap: 60px;
        padding-top: 0;
        align-items: center;
        min-height: 100vh;
    }

    .hero-text {
        order: 1;
        flex: 1;
    }

    .hero-visual {
        order: 2;
        flex: 0 0 380px;
    }

    .hero-cta {
        justify-content: flex-start;
    }

    /* About */
    .about-grid {
        grid-template-columns: 1.2fr 0.8fr;
        gap: 60px;
        align-items: center;
    }

    .about-visual {
        order: 0;
    }

    /* Projects */
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: 1.2fr 0.8fr;
        gap: 60px;
        align-items: start;
    }

    /* Project detail */
    .project-detail-header {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

/* — Wide (≥1280px) — */
@media (min-width: 1280px) {
    .container {
        padding: 0 40px;
    }

    .hero-visual {
        flex: 0 0 440px;
    }

    .about-grid {
        gap: 80px;
    }
}