/* ===================================================================
   350-390 Queens Quay Private Residences - Mobile-Only Styles
   Optimized for mobile devices (768px and below)
   Adapted from 370 Queens Quay proven mobile implementation
   =================================================================== */

/* Mobile-specific CSS Variables */
:root {
    --mobile-header-height: 70px;
    --mobile-padding: 20px;
    --mobile-section-padding: 60px 0;
    --mobile-content-gap: 30px;
    --mobile-font-scale: 0.875;
    
    /* Safe area variables for iOS/Android */
    --safe-area-inset-top: env(safe-area-inset-top, 0px);
    --safe-area-inset-bottom: env(safe-area-inset-bottom, 0px);
    --safe-area-inset-left: env(safe-area-inset-left, 0px);
    --safe-area-inset-right: env(safe-area-inset-right, 0px);
    
    /* Dynamic viewport height for mobile browsers */
    --mobile-vh: 1vh;
}

/* ===================
   MOBILE BASE STYLES
   =================== */
@media (max-width: 768px) {
    
    /* Body & Layout */
    body {
        padding-top: var(--mobile-header-height);
        font-size: calc(16px * var(--mobile-font-scale));
        line-height: 1.5;
    }

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

    /* Mobile spacer optimization */
    .spacer {
        padding-top: 80px !important;
    }

    /* ===================
       MOBILE HEADER
       =================== */
    .header-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        padding: 15px 15px;
        flex-wrap: nowrap;
        transition: all 0.3s ease;
    }

    /* Logo positioning - left aligned */
    .logo-container {
        flex: 0 0 auto;
        order: 1;
    }

    .logo-container svg {
        width: 140px;
        height: auto;
    }

    /* Hide desktop navigation on mobile */
    .primary-menu {
        display: none !important;
    }

    /* Request Private Tour button - centered and visible on mobile */
    .header-btn {
        display: flex !important;
        order: 2;
        flex: 1 1 auto;
        justify-content: center;
        align-items: center;
        max-width: 200px;
        margin: 0 auto;
        padding: 10px 14px;
        font-size: 10px;
        white-space: nowrap;
        letter-spacing: 0.03em;
    }

    /* Mobile toggle - right aligned */
    .mobile-toggle {
        display: flex !important;
        order: 3;
        flex: 0 0 auto;
        flex-shrink: 0;
    }

    /* Mobile Header Shrinking Effect */
    .page-header {
        transition: all 0.3s ease;
    }

    .page-header.header-shrunk .header-container {
        padding: 10px 15px;
    }

    .page-header.header-shrunk .logo-container svg {
        width: 120px;
        transition: width 0.3s ease;
    }

    .page-header.header-shrunk .header-btn {
        padding: 8px 12px;
        font-size: 10px;
        transition: all 0.3s ease;
    }

    .page-header.header-shrunk .mobile-toggle {
        transform: scale(0.9);
        transition: transform 0.3s ease;
    }

    /* ===================
       MOBILE NAVIGATION OVERLAY
       =================== */
    .mobile-nav-overlay {
        position: fixed !important;
        top: 0 !important;
        right: -100% !important;
        left: auto !important;
        width: 100% !important;
        height: 100dvh !important;
        height: calc(100vh - var(--safe-area-inset-bottom)) !important;
        max-height: 100vh !important;
        overflow-y: auto !important;
        -webkit-overflow-scrolling: touch;
        padding-bottom: calc(var(--safe-area-inset-bottom) + 40px);
        box-sizing: border-box;
        transition: right 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
    }

    .mobile-nav-overlay.active {
        right: 0 !important;
        left: auto !important;
    }

    .mobile-nav-backdrop {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        width: 100% !important;
        height: 100dvh !important;
        height: calc(100vh - var(--safe-area-inset-bottom)) !important;
    }

    .mobile-nav-content {
        min-height: 100%;
        display: flex;
        flex-direction: column;
        padding-bottom: calc(var(--safe-area-inset-bottom) + 40px);
    }

    .mobile-nav-menu {
        flex: 1;
        padding: 10px 0;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        min-height: 0;
    }

    .mobile-menu-link {
        padding: 22px 30px;
        font-size: 18px;
    }

    .mobile-nav-header {
        padding: 20px 25px;
        padding-top: calc(20px + var(--safe-area-inset-top));
        flex-shrink: 0;
    }

    .mobile-nav-logo svg {
        width: 130px;
    }

    .mobile-nav-footer {
        padding: 25px 30px;
        padding-bottom: calc(25px + var(--safe-area-inset-bottom) + 20px);
        margin-top: auto;
        flex-shrink: 0;
        background: var(--pearl);
        border-top: 1px solid var(--silver);
    }

    .mobile-cta-btn {
        width: 100%;
        background: linear-gradient(135deg, var(--primary-gold), #B8965A);
        color: var(--warm-white);
        padding: 16px 24px;
        border: none;
        font-weight: 600;
        font-size: 14px;
        letter-spacing: 1px;
        text-transform: uppercase;
        cursor: pointer;
        transition: var(--transition-base);
        border-radius: 4px;
        margin-bottom: 25px;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .mobile-contact-info {
        display: flex;
        flex-direction: row;
        gap: 16px;
        justify-content: space-between;
        align-items: flex-start;
    }

    .contact-item {
        display: flex;
        flex-direction: column;
        gap: 4px;
        flex: 1;
        align-items: center;
        text-align: center;
    }

    .contact-link {
        font-size: 15px;
    }

    /* ===================
       MOBILE HERO SECTION
       =================== */
    .hero-banner {
        height: 50vh;
        min-height: 400px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-description {
        font-size: 0.95rem;
    }

    .hero-content {
        display: none !important;
    }

    .hero-content-mobile {
        display: block !important;
        max-width: 90%;
        width: 80%;
    }

    .hero-subtitle-mobile {
        font-size: 12px;
        margin-bottom: 12px;
        letter-spacing: 1.5px;
        line-height: 1.3;
    }

    .hero-title-mobile {
        font-size: clamp(2rem, 8vw, 2.4rem);
        margin-bottom: 20px;
        line-height: 1.1;
    }

    .hero-description-mobile {
        font-size: 13px;
        line-height: 1.4;
        margin-bottom: 18px;
    }

    .hero-cta-mobile {
        margin-top: 18px;
    }

    .desktop-hero-image {
        display: none !important;
    }

    .mobile-hero-image {
        display: block !important;
    }

    /* ===================
       MOBILE CONTENT SECTIONS
       =================== */
    .content-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .content-text {
        padding: 30px;
    }

    .content-text h3 {
        font-size: 1.8rem;
    }

    .section-title,
    .section-title2 {
        font-size: 2rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    h2, h3 {
        font-size: 2rem;
    }

    /* ===================
       MOBILE AMENITIES
       =================== */
    .amenity-item,
    .amenity-card {
        padding: 30px 20px;
    }

    .amenities-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    /* ===================
       MOBILE GALLERY
       =================== */
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .filter-btn {
        padding: 10px 16px;
        font-size: 13px;
    }

    /* ===================
       MOBILE UNIT CARDS
       =================== */
    .unit-types-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .unit-type-card-body {
        padding: 20px 15px;
        gap: 18px;
        min-height: auto;
        flex-direction: row;
    }

    .card-image-wrapper {
        flex: 0 0 35%;
        max-width: 35%;
        min-height: 140px;
    }

    .unit-type-title {
        font-size: 22px;
    }

    .price-size-info {
        grid-template-columns: 1fr 1fr;
        gap: 16px 20px;
        justify-content: stretch;
        width: 100%;
    }

    .info-item {
        min-width: auto;
    }

    .request-tour-btn,
    .view-floorplans-btn {
        width: 100%;
        padding: 12px 20px;
        font-size: 14px;
    }

    /* ===================
       MOBILE TOUR MODAL
       =================== */
    .tour-modal-overlay {
        padding: 10px;
        display: flex;
        align-items: flex-start;
        padding-top: 10px;
    }

    .tour-modal-content {
        max-width: 100% !important;
        width: 100% !important;
        max-height: 95vh;
        margin: 0;
        padding: 20px 15px;
        overflow-y: auto;
    }

    .tour-modal-header {
        padding: 20px 15px 15px;
    }

    .tour-modal-header h2 {
        font-size: 24px;
        line-height: 1.3;
    }

    .tour-modal-header p {
        font-size: 14px;
    }

    .tour-modal-body {
        grid-template-columns: 1fr !important;
        gap: 25px;
        padding: 15px;
    }

    .tour-form-section,
    .tour-calendar-section {
        padding: 0;
    }

    .tour-booking-form .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .tour-booking-form input,
    .tour-booking-form select,
    .tour-booking-form textarea {
        padding: 12px 14px;
        font-size: 16px; /* Prevent iOS zoom */
    }

    .tour-booking-form textarea {
        min-height: 80px;
    }

    /* Calendar mobile optimization */
    .calendar-container {
        padding: 15px;
    }

    .calendar-grid {
        gap: 4px;
    }

    .calendar-day {
        font-size: 12px;
        padding: 8px 4px;
        min-height: 32px;
    }

    .calendar-day-header {
        font-size: 11px;
        padding: 8px 4px;
    }

    .calendar-title {
        font-size: 16px;
    }

    .calendar-nav {
        width: 32px;
        height: 32px;
        font-size: 18px;
    }

    /* Time slots mobile */
    .time-slots {
        padding: 15px;
    }

    .time-slots h4 {
        font-size: 16px;
    }

    .time-slot-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .time-slot {
        padding: 10px 12px;
        font-size: 13px;
    }

    /* Tour modal footer */
    .tour-modal-footer {
        padding: 15px;
        gap: 15px;
    }

    .selected-datetime {
        padding: 12px;
        font-size: 13px;
    }

    .tour-modal-actions {
        flex-direction: column;
        gap: 12px;
    }

    .tour-btn-primary,
    .tour-btn-secondary {
        width: 100%;
        padding: 14px 20px;
        font-size: 16px;
        min-width: auto;
    }

    .tour-modal-close {
        top: 15px;
        right: 15px;
        width: 36px;
        height: 36px;
        font-size: 20px;
    }

    /* ===================
       MOBILE CONTACT MODAL
       =================== */
    .contact-modal-overlay {
        padding: 10px;
        display: flex;
        align-items: flex-start;
        padding-top: 10px;
    }

    .contact-modal-content {
        max-width: 100% !important;
        width: 100% !important;
        max-height: 95vh;
        margin: 0;
        overflow-y: auto;
    }

    .contact-modal-header {
        padding: 30px 20px 20px;
    }

    .contact-modal-header h2 {
        font-size: 24px;
        line-height: 1.3;
    }

    .contact-modal-header p {
        font-size: 14px;
    }

    .contact-modal-body {
        padding: 20px;
    }

    .contact-inquiry-form .form-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .contact-inquiry-form {
        gap: 20px;
    }

    .contact-inquiry-form input,
    .contact-inquiry-form select,
    .contact-inquiry-form textarea {
        padding: 12px 14px;
        font-size: 16px; /* Prevent iOS zoom */
    }

    .contact-inquiry-form textarea {
        min-height: 80px;
    }

    .contact-preferences {
        gap: 12px;
        flex-direction: column;
    }

    .contact-preference-option {
        padding: 10px 12px;
        font-size: 14px;
        width: 100%;
        justify-content: flex-start;
    }

    .checkbox-custom {
        width: 18px;
        height: 18px;
    }

    .contact-modal-footer {
        padding: 15px 20px 30px;
    }

    .contact-modal-actions {
        flex-direction: column;
        gap: 12px;
    }

    .contact-btn-primary,
    .contact-btn-secondary {
        padding: 16px 24px;
        font-size: 16px;
        min-width: auto;
        width: 100%;
    }

    .contact-modal-close {
        top: 15px;
        right: 15px;
        width: 36px;
        height: 36px;
        font-size: 20px;
    }

    /* ===================
       MOBILE LIGHTBOX
       =================== */
    .lightbox-overlay {
        padding: 10px;
    }

    .lightbox-content {
        max-width: 95%;
        max-height: 95%;
    }

    .lightbox-nav {
        width: 44px;
        height: 44px;
        font-size: 22px;
    }

    .lightbox-nav.prev {
        left: 10px;
    }

    .lightbox-nav.next {
        right: 10px;
    }

    .lightbox-close {
        top: 10px;
        right: 10px;
        width: 36px;
        height: 36px;
        font-size: 20px;
    }

    .lightbox-counter {
        bottom: 15px;
        font-size: 13px;
        padding: 8px 14px;
    }

    /* ===================
       MOBILE FLOORPLAN GALLERY
       =================== */
    .floorplan-gallery-overlay {
        padding: 10px;
    }

    .floorplan-gallery-container {
        max-width: 100%;
        max-height: 95vh;
        padding: 20px 15px;
    }

    .floorplan-gallery-header {
        padding: 15px;
    }

    .floorplan-gallery-header h2 {
        font-size: 20px;
    }

    .floorplan-gallery-content {
        padding: 15px;
    }

    .floorplan-image-title {
        font-size: 14px;
        padding: 10px 15px;
    }

    .floorplan-nav {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }

    .floorplan-counter {
        font-size: 13px;
        padding: 8px 12px;
    }

    /* ===================
       MOBILE FOOTER
       =================== */
    .footer-main-title {
        font-size: clamp(2rem, 6vw, 2.5rem);
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
        justify-items: center;
    }

    .footer-left,
    .footer-right {
        text-align: center;
        width: 100%;
    }

    .footer-info {
        gap: 30px;
    }

    .social-links {
        justify-content: center;
    }

    .page-footer {
        padding: 60px 0 40px;
    }

    .footer-copyright {
        font-size: 13px;
        padding: 20px 15px;
    }

    /* ===================
       MOBILE SCROLL TO TOP
       =================== */
    .scroll-to-top {
        bottom: 20px !important;
        right: 20px !important;
        width: 44px !important;
        height: 44px !important;
        font-size: 18px !important;
    }

    .scroll-to-top::before {
        font-size: 20px !important;
    }

    /* ===================
       MOBILE MODAL GENERAL
       =================== */
    .modal-content {
        padding: 30px 20px;
        max-width: 95%;
        max-height: 90vh;
    }

    .modal-overlay {
        padding: 15px;
    }
}

/* ===================
   SMALL MOBILE STYLES (480px and below)
   =================== */
@media (max-width: 480px) {
    :root {
        --mobile-header-height: 65px;
        --mobile-padding: 15px;
        --mobile-font-scale: 0.8;
    }

    body {
        padding-top: 65px;
        font-size: 14px;
    }

    .container {
        padding: 0 15px;
    }

    /* Header */
    .header-container {
        padding: 12px 15px;
    }

    /* Hero */
    .hero-title {
        font-size: 1.8rem;
    }

    .hero-title-mobile {
        font-size: 1.75rem;
    }

    .hero-subtitle,
    .hero-subtitle-mobile {
        font-size: 11px;
    }

    .hero-description,
    .hero-description-mobile {
        font-size: 0.85rem;
    }

    /* Typography */
    h2, h3,
    .section-title,
    .section-title2,
    .section-header h2 {
        font-size: 1.5rem;
    }

    .content-text h3 {
        font-size: 1.6rem;
    }

    /* Amenities */
    .amenity-card {
        padding: 25px 15px;
    }

    /* Gallery */
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .filter-btn {
        padding: 8px 12px;
        font-size: 12px;
    }

    /* Unit Cards */
    .unit-types-grid {
        gap: 12px;
    }

    .unit-type-card-body {
        flex-direction: column;
        padding: 15px;
        gap: 15px;
    }

    .card-image-wrapper {
        flex: none;
        max-width: 100%;
        width: 100%;
        height: 180px;
        order: 1;
    }

    .card-content-wrapper {
        order: 2;
    }

    .unit-type-title {
        font-size: 20px;
    }

    .price-size-info {
        grid-template-columns: 1fr;
        gap: 12px;
        width: 100%;
    }

    .request-tour-btn,
    .view-floorplans-btn {
        padding: 12px 16px;
        font-size: 14px;
    }

    /* Tour Modal Small */
    .tour-modal-content {
        padding: 15px 10px;
    }

    .tour-modal-header {
        padding: 15px;
    }

    .tour-modal-header h2 {
        font-size: 22px;
    }

    .tour-modal-header p {
        font-size: 13px;
    }

    .tour-modal-body {
        padding: 10px;
        gap: 20px;
    }

    .calendar-container {
        padding: 10px;
    }

    .calendar-day {
        font-size: 11px;
        padding: 6px 2px;
        min-height: 28px;
    }

    .calendar-day-header {
        font-size: 10px;
        padding: 6px 2px;
    }

    .calendar-title {
        font-size: 14px;
    }

    .calendar-nav {
        width: 28px;
        height: 28px;
        font-size: 16px;
    }

    .time-slot {
        padding: 9px 10px;
        font-size: 12px;
    }

    .time-slots {
        padding: 10px;
    }

    .time-slots h4 {
        font-size: 14px;
    }

    .tour-modal-footer {
        padding: 10px;
    }

    .selected-datetime {
        padding: 10px;
        font-size: 12px;
    }

    .tour-btn-primary,
    .tour-btn-secondary {
        padding: 13px 18px;
        font-size: 15px;
    }

    /* Contact Modal Small */
    .contact-modal-content {
        padding: 15px 10px;
    }

    .contact-modal-header {
        padding: 20px 15px 15px;
    }

    .contact-modal-header h2 {
        font-size: 22px;
    }

    .contact-modal-header p {
        font-size: 13px;
    }

    .contact-modal-body {
        padding: 15px;
    }

    .contact-inquiry-form {
        gap: 16px;
    }

    .contact-inquiry-form .form-row {
        gap: 14px;
    }

    .contact-btn-primary,
    .contact-btn-secondary {
        padding: 14px 20px;
        font-size: 15px;
    }

    /* Footer */
    .footer-main-title {
        font-size: 1.75rem;
    }

    .page-footer {
        padding: 50px 0 30px;
    }

    .footer-copyright {
        font-size: 12px;
        padding: 15px;
    }

    /* Modal General */
    .modal-content {
        padding: 20px 15px;
        max-width: 100%;
    }

    /* Scroll to Top */
    .scroll-to-top {
        bottom: 15px !important;
        right: 15px !important;
        width: 40px !important;
        height: 40px !important;
        font-size: 16px !important;
    }
}

/* ===================
   EXTRA SMALL MOBILE (375px and below)
   =================== */
@media (max-width: 375px) {
    body {
        font-size: 13px;
    }

    .hero-title-mobile {
        font-size: 1.5rem;
    }

    h2, h3,
    .section-title,
    .section-title2 {
        font-size: 1.3rem;
    }

    .tour-modal-header h2,
    .contact-modal-header h2 {
        font-size: 20px;
    }

    .calendar-day {
        font-size: 10px;
        padding: 5px 1px;
        min-height: 26px;
    }

    .time-slot {
        font-size: 11px;
        padding: 8px;
    }

    .time-slot-grid {
        gap: 6px;
    }

    .unit-type-title {
        font-size: 18px;
    }

    /* Header - Extra small mobile adjustments */
    .header-container {
        gap: 8px;
        padding: 12px 12px;
    }

    .logo-container svg {
        width: 120px;
    }

    .header-btn {
        max-width: 160px;
        padding: 8px 10px;
        font-size: 9px;
        letter-spacing: 0.02em;
    }

    .mobile-toggle {
        transform: scale(0.9);
    }
}