/* ============================================================
   SAS INSTITUTIONS — RESPONSIVE CSS
   responsive.css
   ============================================================ */

/* ── Large Desktop 1280px ─────────────────────────────────── */
@media (max-width: 1280px) {
    .academics__timeline {
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }

    .academics__timeline::before {
        display: none;
    }

    .footer__grid {
        grid-template-columns: 1.4fr 1fr 1fr;
        gap: 36px;
    }

    .footer__grid > :last-child {
        grid-column: 1 / -1;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
}

/* ── Tablet Desktop 1024px ────────────────────────────────── */
@media (max-width: 1024px) {

    /* Navbar */
    .navbar__links { display: none; }
    .navbar__cta { display: none; }
    .navbar__hamburger { display: flex; }
    .navbar__dropdown { display: none; }

    #navbar {
        max-width: calc(100% - 24px);
        left: 12px;
        transform: none;
    }

    .navbar__inner {
        padding: 12px clamp(16px, 4vw, 24px);
    }

    /* Hero */
    .hero__content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .hero__floating-card {
        position: absolute;
        right: 24px;
        bottom: 58px;
        margin-top: 0;
        max-width: 250px;
    }

    /* About */
    .about__grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about__image-col {
        max-width: 580px;
        margin: 0 auto;
    }

    .about__content-col { padding-right: 0; }

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

    /* Institutions */
    .institutions__grid {
        grid-template-columns: 1fr 1fr;
    }

    /* Values */
    .values__grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    /* Results */
    .results__grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    /* Admission CTA */
    .admission-cta__inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    /* Contact */
    .contact__grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

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

    .chairman__portrait {
        max-width: 420px;
        margin: 0 auto;
    }

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

    /* Faculty */
    .faculty__institutions {
        grid-template-columns: 1fr 1fr;
    }

    /* Academics */
    .academics__timeline {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    /* Footer */
    .footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .footer__grid > :first-child {
        grid-column: 1 / -1;
    }
}

/* ── Tablet 768px ─────────────────────────────────────────── */
@media (max-width: 768px) {

    /* Announcement */
    .announcement-bar__close { display: none; }

    /* Hero - Tablet Layout */
    .hero__content {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 50px 24px 100px;
        text-align: center;
    }

    .hero__left {
        max-width: 100%;
    }

    .hero__micro-label {
        justify-content: center;
        margin-bottom: 20px;
    }

    .hero__micro-label::before {
        display: none;
    }

    .hero__headline {
        text-align: center;
        font-size: clamp(1.8rem, 6vw, 2.8rem);
    }

    .hero__right {
        max-width: 600px;
        margin: 0 auto;
        flex-direction: column;
        align-items: center;
    }

    .hero__body {
        text-align: center;
        max-width: 100%;
    }

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

    .hero__floating-card {
        position: static;
        margin-top: 28px;
        max-width: 100%;
    }

    /* Trust */
    .trust__grid {
        grid-template-columns: 1fr 1fr;
    }

    .trust__item:nth-child(2) { border-right: none; }
    .trust__item:nth-child(3) { border-top: 1px solid var(--border); }
    .trust__item:nth-child(4) { border-top: 1px solid var(--border); border-right: none; }

    /* About sub grid */
    .about__sub-grid {
        grid-template-columns: 1fr;
    }

    /* Institutions */
    .institutions__grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }

    /* Academics — vertical timeline on mobile */
    .academics__timeline {
        grid-template-columns: 1fr;
        gap: 0;
        position: relative;
        padding-left: 28px;
    }

    .academics__timeline::before {
        display: block;
        top: 6px;
        left: 5px;
        bottom: 0;
        width: 1px;
        height: auto;
        right: auto;
    }

    .academic-stage {
        padding: 0 0 32px 0;
        position: relative;
    }

    .academic-stage__dot {
        position: absolute;
        left: -28px;
        top: 5px;
        margin-bottom: 0;
    }

    /* Values */
    .values__grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }

    /* Facilities */
    .facilities__grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto;
    }

    .facility-item:nth-child(1),
    .facility-item:nth-child(2),
    .facility-item:nth-child(3),
    .facility-item:nth-child(4) {
        grid-column: auto;
        grid-row: auto;
        aspect-ratio: 4/3;
    }

    .facilities__tabs {
        width: 100%;
        overflow-x: auto;
    }

    /* Faculty */
    .faculty__institutions {
        grid-template-columns: 1fr;
    }

    /* Gallery */
    .gallery__grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 200px 200px 160px;
    }

    .gallery-item:nth-child(1) { grid-column: 1 / 3; grid-row: 1; }
    .gallery-item:nth-child(2) { grid-column: 1 / 2; grid-row: 2; }
    .gallery-item:nth-child(3) { grid-column: 2 / 3; grid-row: 2; }
    .gallery-item:nth-child(4) { grid-column: 1 / 2; grid-row: 3; }
    .gallery-item:nth-child(5) { grid-column: 2 / 3; grid-row: 3; }
    .gallery-item:nth-child(6) { display: none; }

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

    .footer__grid > :first-child {
        grid-column: 1 / -1;
    }

    .footer__bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}

/* ── Mobile 480px ─────────────────────────────────────────── */
@media (max-width: 480px) {

    /* Fix horizontal overflow */
    body, html {
        overflow-x: hidden;
        max-width: 100vw;
    }

    #hero {
        overflow: hidden;
        max-width: 100vw;
    }

    .hero__bg {
        overflow: hidden;
        max-width: 100vw;
    }

    .hero__bg-img {
        transform: scale(1.0) !important;
        max-width: 100vw;
    }

    .container {
        max-width: 100%;
        padding-left: 16px;
        padding-right: 16px;
    }

    /* Form */
    .form__row {
        grid-template-columns: 1fr;
    }

    /* Trust */
    .trust__grid {
        grid-template-columns: 1fr 1fr;
    }

    /* Popup — near fullscreen */
    .popup__card {
        grid-template-columns: 1fr;
        max-height: 92vh;
        overflow-y: auto;
    }

    .popup__image { display: none; }

    .popup__content {
        padding: 28px 24px;
    }

    /* Navbar mobile side spacing */
    #navbar {
        width: 100%;
        max-width: 100%;
        left: 0;
        right: 0;
        margin: 0;
        transform: none;
    }

    .navbar__inner {
        padding: 8px 10px;
        min-height: auto;
    }

    .navbar__logo {
        gap: 6px;
        margin-right: 0;
    }

    .navbar__logo-icon {
        width: 36px;
        height: 36px;
    }

    .navbar__logo-name {
        font-size: 0.76rem;
    }

    .navbar__logo-tagline {
        font-size: 0.5rem;
    }

    .navbar__hamburger {
        margin-left: auto;
        width: 40px;
        height: 40px;
    }

    /* Hero - Mobile Premium Layout */
    #hero {
        min-height: 58vh;
    }

    .hero__content {
        grid-template-columns: 1fr;
        gap: 0;
        text-align: center;
        padding: 35px 16px 70px;
        min-height: 58vh;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        width: 100%;
        margin: 0;
    }

    .hero__left {
        order: 1;
        margin-bottom: 0;
        width: 100%;
        padding: 0;
    }

    .hero__micro-label {
        font-size: 0.8rem;
        margin-bottom: 30px;
        justify-content: center;
        letter-spacing: 0.05em;
        font-weight: 500;
        color: rgba(255,255,255,0.9);
    }

    .hero__micro-label::before {
        display: none;
    }

    .hero__headline {
        font-size: clamp(1.6rem, 10vw, 2.6rem);
        text-align: center;
        line-height: 1.15;
        margin-bottom: 40px;
        font-weight: 800;
        letter-spacing: -0.02em;
        color: #ffffff;
    }

    .hero__headline-line {
        display: block;
        margin-bottom: 8px;
    }

    .hero__headline-line:last-child {
        margin-bottom: 0;
    }

    .hero__right {
        order: 2;
        max-width: 100%;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 20px;
        margin-top: auto;
        padding-top: 50px;
    }

    .hero__body {
        font-size: 0.95rem;
        line-height: 1.65;
        text-align: center;
        max-width: 100%;
        margin-bottom: 24px;
        color: rgba(255,255,255,0.85);
        letter-spacing: 0.02em;
    }

    .hero__ctas {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        gap: 14px;
        margin-top: auto;
    }

    .hero__ctas .btn {
        width: 100%;
        justify-content: center;
        padding: 16px 24px;
        font-size: 0.95rem;
        font-weight: 600;
    }

    .hero__floating-card {
        position: static;
        margin-top: 40px;
        max-width: 100%;
        padding: 24px 16px;
    }

    .hero__scroll {
        bottom: 20px;
        font-size: 0.8rem;
    }

    /* Lightbox */
    .lightbox__prev { left: 8px; }
    .lightbox__next { right: 8px; }

    /* Institutions */
    .institutions__grid { max-width: 100%; }

    /* Footer */
    .footer__grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

/* ── Mobile Small 390px ───────────────────────────────────── */
@media (max-width: 390px) {

    .hero__headline {
        font-size: clamp(1.8rem, 8vw, 2.8rem);
    }

    /* Announcement bar */
    .announcement-bar__inner {
        flex-direction: column;
        gap: 6px;
    }

    /* Trust */
    .trust__grid {
        grid-template-columns: 1fr;
    }

    .trust__item {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .trust__item:last-child { border-bottom: none; }

    /* Gallery */
    .gallery__grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }

    .gallery-item {
        grid-column: auto !important;
        grid-row: auto !important;
        aspect-ratio: 4/3;
    }

    .gallery-item:nth-child(6) { display: block; }

    /* Values */
    .values__grid {
        max-width: 100%;
    }
}

/* ── Popup mobile ─────────────────────────────────────────── */
@media (max-width: 600px) {
    .popup__card {
        grid-template-columns: 1fr;
    }

    .popup__image {
        min-height: 160px;
        order: -1;
    }

    .popup__image-placeholder {
        min-height: 160px;
    }
}

/* ── Theme 02 hero sizing ────────────────────────────────── */
@media (min-width: 769px) and (max-width: 1024px) {
    .hero__floating-card {
        position: absolute !important;
        right: 24px;
        bottom: 58px !important;
        margin-top: 0 !important;
        max-width: 250px;
    }
}

@media (max-width: 768px) {
    .hero__floating-card {
        position: static;
        margin-top: 28px;
        max-width: 100%;
    }
}

/* ── Mobile Button Styles (All Pages) ────────────────────── */
@media (max-width: 600px) {
    /* General button adjustments */
    .btn {
        padding: 11px 16px;
        font-size: 12px;
    }

    /* CTA sections with flex buttons */
    .hero__ctas .btn,
    .admission-cta__inner .btn,
    .cta-buttons .btn,
    .final-actions .btn,
    .hero-actions .btn {
        padding: 11px 16px;
        font-size: 12px;
        width: 100%;
        justify-content: center;
        flex: 1;
    }

    /* Flex-direction for mobile button groups */
    .hero__ctas,
    .admission-cta__inner,
    .cta-buttons,
    .final-actions,
    .hero-actions {
        flex-direction: column;
        gap: 8px;
    }

    /* Contact page final-cta section */
    .final-cta h2 { font-size: 1.4rem; }
    .final-cta p { font-size: 13px; }
}