/* ============================================
   Responsive Styles - All Breakpoints
   ============================================ */

/* ===========================================
   Tablet (≥768px)
   =========================================== */
@media (min-width: 768px) {
    /* Typography */
    h1 { font-size: 3rem; }
    h2 { font-size: 2.25rem; }

    /* Hero */
    .hero__title {
        font-size: 2.8rem;
    }

    .hero__subtitle {
        font-size: 1.25rem;
    }

    /* Production Grid */
    .production-grid {
        grid-template-columns: 3fr 2fr;
    }

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

    /* Category Cards */
    .category-cards {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    /* FAQ Grid */
    .faq-grid {
        grid-template-columns: 1fr 1fr;
    }

    /* About Intro */
    .about-intro {
        grid-template-columns: 1fr 1fr;
    }

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

    /* Contact Grid */
    .contact-grid {
        grid-template-columns: 1fr 1fr;
    }

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

    /* Contact form submit */
    .contact-form__submit {
        width: auto;
    }
}

/* ===========================================
   Desktop (≥992px)
   =========================================== */
@media (min-width: 992px) {
    /* Header - show desktop nav */
    .header__nav {
        display: flex;
    }

    .header__actions {
        display: flex;
    }

    .header__hamburger {
        display: none;
    }

    .mobile-nav {
        display: none !important;
    }

    /* Tighten nav for space */
    .nav__link {
        padding: 10px 8px;
        font-size: 0.73rem;
    }

    .header__nav {
        margin: 0 8px;
    }

    /* Hero */
    .hero__title {
        font-size: 3.2rem;
    }

    /* Features Grid - 4 columns */
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    /* Last 3 features centered */
    .features-grid .feature-card:nth-child(5) {
        grid-column: 1;
    }

    /* Category Cards - 3 columns */
    .category-cards {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Articles Grid - 3 columns */
    .articles-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Gallery Grid - 3 columns */
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Footer Grid - 4 columns */
    .footer__grid {
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
    }

    /* Section padding */
    .section {
        padding: var(--section-padding) 0;
    }

    /* Page Hero */
    .page-hero__title {
        font-size: 3rem;
    }
}

/* ===========================================
   Large Desktop (≥1200px)
   =========================================== */
@media (min-width: 1200px) {
    .hero__title {
        font-size: 3.5rem;
    }

    .container {
        padding: 0 30px;
    }

    .nav__link {
        padding: 10px 14px;
        font-size: 0.82rem;
    }
}

/* ===========================================
   Small Mobile (≤480px)
   =========================================== */
@media (max-width: 480px) {
    :root {
        --section-padding: 40px;
        --container-padding: 15px;
    }

    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.5rem; }

    .hero {
        min-height: 80vh;
    }

    .hero__title {
        font-size: 1.8rem;
    }

    .hero__subtitle {
        font-size: 1rem;
    }

    .hero__play-btn {
        width: 65px;
        height: 65px;
        font-size: 1.2rem;
    }

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

    .page-hero {
        padding: 100px 0 40px;
        min-height: 220px;
    }

    .page-hero__title {
        font-size: 1.8rem;
    }

    .btn--lg {
        padding: 14px 30px;
        font-size: 1rem;
    }

    .feature-card {
        padding: 15px;
    }

    .feature-card__number {
        width: 40px;
        height: 40px;
        min-width: 40px;
        font-size: 1.1rem;
    }

    .category-card {
        min-height: 220px;
    }

    .product-category {
        flex-direction: column;
        text-align: center;
    }

    .product-category__icon {
        justify-content: center;
    }

    .contact-info__item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}