/* ==========================================================================
   Responsive Styles - Nagai Koumuten
   ========================================================================== */

/* Tablet (768px+) */
@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-xl);
    }

    .header__nav {
        display: block;
    }

    .header__cta {
        display: block;
    }

    .header__hamburger {
        display: none;
    }

    .philosophy__grid {
        grid-template-columns: 1.2fr 1fr;
    }

    .philosophy__img img {
        height: 300px;
    }

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

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





    .news-card {
        align-items: center;
    }

    .footer__grid {
        grid-template-columns: 2fr 1fr 1fr;
    }

    .footer__map {
        grid-column: 1 / -1;
    }

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

    .news-single__layout {
        display: grid;
        grid-template-columns: 1fr 280px;
        gap: var(--space-2xl);
    }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    .section {
        padding: var(--space-4xl) 0;
    }

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

    .footer__grid {
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
    }

    .footer__map {
        grid-column: auto;
    }

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



/* Mobile Only (max 767px) */
@media (max-width: 767px) {
    .hero__title {
        font-size: var(--fs-2xl);
    }

    .section__title--lg {
        font-size: var(--fs-2xl);
    }

    .section__header {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .works-archive-grid {
        grid-template-columns: 1fr;
    }

    .news-card {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .cta-box {
        padding: var(--space-xl) var(--space-lg);
    }

    .cta-box__actions {
        flex-direction: column;
        align-items: stretch;
    }

    .cta-box__actions .btn {
        justify-content: center;
    }

    .philosophy__stats {
        gap: var(--space-lg);
    }

    .stat__number {
        font-size: var(--fs-2xl);
    }

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

    /* Flow Timeline — single column on mobile */
    .flow-timeline {
        max-width: 100%;
    }

    .flow-step {
        grid-template-columns: 40px 1fr;
        gap: 0 var(--space-md);
    }

    .flow-step__spacer {
        display: none;
    }

    .flow-step__marker {
        grid-row: 1;
        grid-column: 1;
    }

    .flow-step__card {
        grid-row: 1;
        grid-column: 2;
    }

    .flow-step__number {
        width: 36px;
        height: 36px;
        font-size: 0.75rem;
    }

    .flow-timeline__track {
        left: 18px;
        transform: none;
    }

    .flow-step__card--right::after,
    .flow-step__card--left::before {
        display: none;
    }

    .flow-step__card--right,
    .flow-step__card--left {
        opacity: 0;
        transform: translateY(20px);
    }

    .flow-step.is-visible .flow-step__card--right,
    .flow-step.is-visible .flow-step__card--left {
        opacity: 1;
        transform: translateY(0);
    }

    .flow-step__card {
        padding: var(--space-md);
    }

    .flow-step__number {
        width: 44px;
        height: 44px;
        font-size: var(--fs-sm);
    }

    /* Works Detail - mobile */
    .works-hero {
        min-height: 60vh;
    }

    .works-hero__content {
        padding: var(--space-2xl) var(--space-md);
    }

    .works-hero__title {
        font-size: var(--fs-xl);
    }

    .works-detail__layout {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        padding: var(--space-xl) var(--space-md);
    }

    .works-sidebar-sticky {
        position: static;
    }

    .works-detail__sidebar {
        order: -1;
    }

    .works-highlights__row {
        grid-template-columns: 1fr;
    }

    .post-navigation {
        flex-direction: column;
    }

    .section__bg-text {
        font-size: 4rem;
        left: -10px;
    }

    .footer__grid {
        gap: var(--space-lg);
    }
}

/* Small Mobile (max 480px) */
@media (max-width: 480px) {
    :root {
        --fs-3xl: 2rem;
        --fs-2xl: 1.5rem;
    }

    .container {
        padding: 0 var(--space-md);
    }

    .header__inner {
        height: 64px;
    }

    .hero {
        min-height: 500px;
    }

    .btn--lg {
        padding: 14px 28px;
        font-size: var(--fs-sm);
    }

    .page-header {
        padding: calc(64px + var(--space-xl)) 0 var(--space-xl);
    }

    .page-header__title {
        font-size: var(--fs-2xl);
    }
}