/* ============================================================
   GmarUp — Responsive Breakpoints
   ============================================================ */

/* ---- Mobile: < 576px ---- */
@media (max-width: 575px) {
    .container {
        padding: 0 var(--space-lg);
    }

    /* Nav */
    .nav__inner {
        padding: 0 var(--space-lg);
    }

    .nav__toggle { display: flex; z-index: 1002; }

    .nav__links {
        position: fixed;
        inset: 0;
        width: 100%;
        height: 100vh;
        height: 100dvh;
        background: rgba(255,255,255,.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--space-xl);
        opacity: 0;
        visibility: hidden;
        transition: opacity .3s ease, visibility .3s ease;
        z-index: 1001;
    }

    .nav__links.active {
        opacity: 1;
        visibility: visible;
    }

    .nav__link {
        font-size: 1.25rem;
        font-weight: 500;
        padding: var(--space-sm) var(--space-lg);
        color: var(--ink);
        transition: color .2s;
    }

    .nav__link:hover {
        color: var(--gold);
    }

    .nav__link--cta {
        text-align: center;
        margin-top: var(--space-lg);
        padding: .75rem 2.5rem;
        font-size: 1.1rem;
    }

    /* Hero */
    .hero {
        padding: 100px 0 var(--space-3xl);
        min-height: auto;
    }

    .hero__inner {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        padding: 0 var(--space-lg);
        text-align: center;
    }

    .hero__title {
        font-size: 2.2rem;
    }

    .hero__subtitle {
        font-size: 1rem;
        margin: 0 auto var(--space-xl);
    }

    .hero__actions {
        flex-direction: column;
        align-items: center;
        gap: var(--space-lg);
    }

    .hero__visual {
        display: none;
    }

    /* About */
    .about { padding: var(--space-3xl) 0; }

    .about__grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .section-title { font-size: 1.8rem; }

    /* Benefits */
    .benefits { padding: var(--space-3xl) 0; }

    .benefits__grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    /* Memorial */
    .memorial { padding: var(--space-3xl) 0; }

    .memorial__inner {
        grid-template-columns: 1fr;
        text-align: center;
        justify-items: center;
        gap: var(--space-xl);
    }

    .memorial__image-wrap {
        width: 140px;
        height: 140px;
    }

    .memorial__name { font-size: 1.4rem; }

    .memorial__quote {
        max-width: 100%;
    }

    .memorial__actions {
        display: flex;
        justify-content: center;
    }

    /* Register */
    .register { padding: var(--space-3xl) 0; }

    .register__grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .register__form-wrap {
        padding: var(--space-xl);
    }

    .register__sidebar {
        position: static;
    }

    .donate-amounts {
        grid-template-columns: 1fr 1fr;
    }

    /* Footer */
    .footer__inner {
        flex-direction: column;
        text-align: center;
        gap: var(--space-lg);
    }

    .footer__links {
        justify-content: center;
        flex-wrap: wrap;
    }

    /* Sticky CTA */
    .sticky-cta__inner {
        padding: var(--space-sm) var(--space-lg);
        gap: var(--space-md);
    }

    .sticky-cta__text {
        font-size: .8rem;
        display: none;
    }

    .sticky-cta__inner .btn {
        flex: 1;
    }

    /* Modal */
    .donation-amounts-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Form */
    .form__trust {
        flex-direction: column;
        align-items: center;
        gap: var(--space-sm);
    }

    /* Chat Demo */
    .chat-demo__caption {
        padding: 0 var(--space-sm);
        font-size: 0.8rem;
    }

    /* Features */
    .features__grid {
        grid-template-columns: 1fr;
    }

    /* Steps */
    .steps {
        flex-direction: column;
        align-items: center;
        gap: var(--space-lg);
    }

    .step__number {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }

    /* Hide connector lines on mobile */
    .step:not(:last-child)::after {
        display: none;
    }

    /* Audience */
    .audience__grid {
        grid-template-columns: 1fr;
    }

    .audience__header .section-title {
        font-size: 1.4rem;
    }

    /* FAQ */
    .faq__question {
        font-size: 0.9rem;
        padding: var(--space-sm) var(--space-md);
    }

    /* Contact */
    .contact__buttons {
        flex-direction: column;
        align-items: stretch;
    }

    /* Final CTA */
    .final-cta__stats {
        flex-direction: column;
        gap: var(--space-md);
    }

    .stat__number {
        font-size: 2rem;
    }
}

/* ---- Small: 576–767px ---- */
@media (min-width: 576px) and (max-width: 767px) {
    .nav__toggle { display: flex; z-index: 1002; }

    .nav__links {
        position: fixed;
        inset: 0;
        width: 100%;
        height: 100vh;
        height: 100dvh;
        background: rgba(255,255,255,.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--space-xl);
        opacity: 0;
        visibility: hidden;
        transition: opacity .3s ease, visibility .3s ease;
        z-index: 1001;
    }

    .nav__links.active {
        opacity: 1;
        visibility: visible;
    }

    .hero__inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__subtitle {
        margin: 0 auto var(--space-xl);
    }

    .hero__actions {
        justify-content: center;
    }

    .hero__visual {
        display: none;
    }

    .about__grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

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

    .memorial__inner {
        grid-template-columns: 1fr;
        text-align: center;
        justify-items: center;
    }

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

    .register__sidebar {
        position: static;
    }

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

    /* Steps */
    .steps {
        flex-direction: column;
        align-items: center;
    }

    /* Hide connector lines on small screens */
    .step:not(:last-child)::after {
        display: none;
    }

    /* Audience */
    .audience__grid {
        grid-template-columns: 1fr;
    }
}

/* ---- Medium: 768–991px ---- */
@media (min-width: 768px) and (max-width: 991px) {
    .nav__toggle { display: none; }

    .hero__inner {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-3xl);
    }

    .about__grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2xl);
    }

    .benefits__grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-lg);
    }

    .register__grid {
        grid-template-columns: 1.2fr .8fr;
        gap: var(--space-xl);
    }

    /* Features — 2 columns on tablet */
    .features__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Audience — 3 columns still fit on tablet */
    .audience__grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-lg);
    }
}

/* ---- Large: 992px+ ---- */
@media (min-width: 992px) {
    .nav__toggle { display: none; }

    .hero { min-height: 100vh; }
}

/* ---- Mobile menu overlay (compat) ---- */
@media (max-width: 767px) {
    .nav-mobile-toggle {
        display: flex;
        flex-direction: column;
        gap: 5px;
        background: none;
        border: none;
        cursor: pointer;
        padding: 6px;
        z-index: 1002;
    }

    .nav-mobile-toggle span {
        display: block;
        width: 22px;
        height: 2px;
        background: var(--ink);
        border-radius: 2px;
        transition: all .3s ease;
    }

    .nav-mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .nav-mobile-toggle.active span:nth-child(2) { opacity: 0; }
    .nav-mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    /* Nav menu compat — same full-screen overlay */
    .nav-menu {
        position: fixed;
        inset: 0;
        width: 100%;
        height: 100vh;
        height: 100dvh;
        background: rgba(255,255,255,.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--space-xl);
        opacity: 0;
        visibility: hidden;
        transition: opacity .3s ease, visibility .3s ease;
        z-index: 1001;
    }

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

/* ---- Touch ---- */
@media (hover: none) {
    .btn:active,
    .benefit:active,
    .feature:active,
    .feature-card:active,
    .audience-card:active {
        transform: scale(.97);
        transition: transform .1s ease;
    }

    .btn:hover,
    .benefit:hover,
    .feature:hover,
    .feature-card:hover,
    .audience-card:hover {
        transform: none;
        box-shadow: none;
    }

    .btn,
    .donate-btn,
    .amount-btn {
        min-height: 48px;
        touch-action: manipulation;
    }
}

/* ---- Input zoom prevention (iOS) ---- */
@media (max-width: 767px) {
    .form-input,
    .form-select {
        font-size: 16px;
        min-height: 48px;
    }
}

/* ---- High DPI ---- */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .memorial__image {
        image-rendering: -webkit-optimize-contrast;
    }
}

/* ---- Landscape mobile ---- */
@media (max-height: 600px) and (orientation: landscape) and (max-width: 991px) {
    .hero {
        min-height: auto;
        padding: 90px 0 var(--space-2xl);
    }

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

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
    *,
    ::before,
    ::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}