/* ===================================================================
   Wartek Duren Sawit — Responsive Stylesheet
   Design philosophy: keep the local route-led hierarchy readable at every
   breakpoint; collapse deliberately, never simply shrink everything.
   =================================================================== */

@media (max-width: 1100px) {
    .nav-list { gap: 0; }
    .nav-list a { padding-left: .56rem; padding-right: .56rem; font-size: .77rem; }
    .hero-inner { gap: 2rem; }
    .footer-grid { grid-template-columns: 1.3fr .85fr .85fr .9fr; gap: 1.7rem; }
}

@media (max-width: 900px) {
    .section { padding: 4rem 0; }
    .hero-inner, .about-grid, .route-grid, .faq-grid { grid-template-columns: 1fr; gap: 2.25rem; }
    .hero-content { max-width: 760px; }
    .hero-image { max-width: 650px; margin: 0 auto; transform: none; }
    .about-image { max-width: 650px; margin: 0 auto; transform: none; }
    .route-image { max-width: 720px; margin: 0 auto; transform: none; }
    .intro-grid { grid-template-columns: 1fr 1.5fr; }
    .intro-stat { display: none; }
    .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
    .footer-grid > div:last-child { grid-column: span 3; }
    .cta-inner { align-items: flex-start; flex-direction: column; }
    .cta-buttons { justify-content: flex-start; }
}

@media (max-width: 768px) {
    .container { padding-left: 1rem; padding-right: 1rem; }
    .header-inner { padding: .7rem 0; }
    .nav-toggle { display: flex; }
    .nav-list { position: absolute; top: 100%; left: 0; right: 0; background: rgba(255,253,249,.98); backdrop-filter: blur(14px); flex-direction: column; align-items: stretch; padding: 1rem; gap: .25rem; box-shadow: var(--shadow-lg); max-height: 0; overflow: hidden; transition: max-height .28s var(--ease-out); }
    .nav-list.open { max-height: 600px; overflow-y: auto; }
    .nav-list li { width: 100%; }
    .nav-list a { display: block; padding: .78rem 1rem; font-size: .88rem; }
    .nav-cta { margin-left: 0; margin-top: .45rem; }
    .nav-cta .btn { width: 100%; }
    h1 { font-size: 2.35rem; }
    h2 { font-size: 1.85rem; }
    .hero { padding: 3.5rem 0 4.5rem; }
    .hero-features { grid-template-columns: 1fr; }
    .hero-cta .btn { flex: 1 1 calc(50% - .5rem); }
    .duren-ribbon-inner { align-items: flex-start; flex-direction: column; }
    .duren-pills { justify-content: flex-start; }
    .intro-grid { grid-template-columns: 1fr; gap: 1.2rem; }
    .services-grid { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1rem; }
    .process-steps { grid-template-columns: 1fr; gap: 1rem; }
    .process-steps::before { left: 1.5rem; top: 1rem; bottom: 1rem; right: auto; border-top: 0; border-left: 1px dashed var(--gray-300); }
    .process-step { padding-left: 1.15rem; }
    .process-no { margin-bottom: .85rem; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.7rem; }
    .footer-grid > div:last-child { grid-column: span 2; }
    .footer-bottom { align-items: flex-start; flex-direction: column; }
    .cta-buttons .btn { flex: 1 1 auto; }
    .wa-float { width: 54px; height: 54px; right: 18px; bottom: 18px; }
    .back-to-top { right: 22px; bottom: 83px; }
}

@media (max-width: 520px) {
    .hero-cta .btn, .cta-buttons .btn { flex: 1 1 100%; }
    .services-grid { grid-template-columns: 1fr; }
    .service-card { padding: 1.35rem; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-grid > div:last-child { grid-column: span 1; }
    .btn { padding: .78rem 1.15rem; font-size: .9rem; }
    .btn-large { padding: .95rem 1.35rem; }
    .hero { padding-top: 3rem; }
    .hero-content h1 { font-size: 2.1rem; }
    .hero-subtitle { font-size: .95rem; }
    .route-section { padding: 3.5rem 0; }
}

@media print {
    .header, .footer, .wa-float, .back-to-top, .nav-toggle { display: none !important; }
    body { color: #000; background: #fff; }
    a { text-decoration: underline; }
    .hero, .route-section, .cta-section { background: #f5f5f5 !important; color: #000 !important; }
}