/* ===== PORTFOLIO PAGE RESPONSIVE CSS ===== */

/* ===== RESPONSIVE VARIABLES ===== */
:root {
    /* Mobile Variables - Smaller sizes */
    --mobile-header-height: 60px;
    --mobile-section-padding: 15px;
    --mobile-container-padding: 1rem;
    --mobile-container-margin: 15px;
    --mobile-font-size-h1: 1.5rem;
    --mobile-font-size-h2: 1.2rem;
    --mobile-font-size-h3: 1rem;
    --mobile-font-size-h4: 0.9rem;
    --mobile-font-size-large: 0.9rem;
    --mobile-font-size-normal: 0.8rem;
    --mobile-font-size-small: 0.75rem;
    --mobile-gap: 0.8rem;
    --mobile-radius: 10px;

    /* Additional Mobile Variables */
    --mobile-logo-width: 50px;
    --mobile-logo-divider-width: 150%;
    --mobile-expertise-image-height: 200px;
    --mobile-team-section-height: auto;
    --mobile-team-wrapper-height: auto;
    --mobile-philosophy-font-size: 1.2rem;
    --mobile-team-content-h2-size: 1.2rem;
    --mobile-footer-brand-h2-size: 1.2rem;
    --mobile-team-content-padding: 1rem;
    --mobile-consultation-form-width: 100%;
    --mobile-qr-image-size: 120px;
    --mobile-grid-columns: 1fr;

    /* Hero Section Mobile Variables */
    --mobile-hero-text-left: 1rem;
    --mobile-hero-text-width: 80%;
    --mobile-font-size-hero-title: 1.8rem;
    --mobile-font-size-hero-text: 1rem;

    /* Additional Mobile Variables for Portfolio */
    --mobile-nav-gap: 1.5rem;
    --mobile-hero-title-size: 1.8rem;
    --mobile-hero-text-size: 1rem;
    --mobile-project-image-height: 250px;
    --mobile-sidebar-width: 100%;
    --mobile-sidebar-padding: 1rem;
    --mobile-call-button-size: 45px;
    --mobile-call-button-bottom: 15px;
    --mobile-call-button-right: 15px;
}

/* ===== MOBILE RESPONSIVE (≤480px) ===== */
@media (max-width: 480px) {
    :root {
        --header-height: var(--mobile-header-height);
        --section-padding: var(--mobile-section-padding);
        --container-padding: var(--mobile-container-padding);
        --container-margin: var(--mobile-container-margin);
        --font-size-h1: var(--mobile-font-size-h1);
        --font-size-h2: var(--mobile-font-size-h2);
        --font-size-h3: var(--mobile-font-size-h3);
        --font-size-h4: var(--mobile-font-size-h4);
        --font-size-large: var(--mobile-font-size-large);
        --font-size-normal: var(--mobile-font-size-normal);
        --font-size-small: var(--mobile-font-size-small);
        --gap-base: var(--mobile-gap);
        --radius-md: var(--mobile-radius);

        /* Override additional variables for mobile */
        --logo-width: var(--mobile-logo-width);
        --logo-divider-width: var(--mobile-logo-divider-width);
        --nav-gap: var(--mobile-nav-gap);
        --font-size-hero-title: var(--mobile-hero-title-size);
        --font-size-hero-text: var(--mobile-hero-text-size);
        --hero-text-width: var(--mobile-hero-text-width);
        --hero-text-left: var(--mobile-hero-text-left);
        --grid-columns: var(--mobile-grid-columns);
        --project-image-height: var(--mobile-project-image-height);
        --sidebar-width: var(--mobile-sidebar-width);
        --sidebar-padding: var(--mobile-sidebar-padding);
        --call-button-size: var(--mobile-call-button-size);
        --call-button-bottom: var(--mobile-call-button-bottom);
        --call-button-right: var(--mobile-call-button-right);
        --qr-image-size: var(--mobile-qr-image-size);
    }

    /* Global Mobile Styles */
    body {
        padding-top: var(--header-height);
        overflow-x: hidden;
    }

    /* ===== HEADER RESPONSIVE ===== */
    .main-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        padding: 0.5rem var(--container-padding);
        height: var(--header-height);
        z-index: 100;
        background-color: rgba(0, 0, 0, 0.2);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .logo-image {
        width: var(--logo-width);
        height: auto;
    }

    .header-left {
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

    .logo-divider,
    .breadcrumb {
        display: none;
    }

    /* Navigation Menu - Hide on mobile */
    .navigation-menu {
        display: none;
    }

    /* Mobile Menu Button */
    .mobile-menu-toggle {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 40px;
        height: 40px;
        background: none;
        border: none;
        cursor: pointer;
        z-index: 1001;
        padding: 0;
        position: relative;
    }

    .hamburger-icon,
    .close-icon {
        font-size: 1.2rem;
        color: var(--color-text-white);
        transition: all 0.3s ease;
        position: absolute;
    }

    .hamburger-icon {
        opacity: 1;
        transform: rotate(0deg);
    }

    .close-icon {
        opacity: 0;
        transform: rotate(90deg);
    }

    .mobile-menu-toggle.active .hamburger-icon {
        opacity: 0;
        transform: rotate(-90deg);
    }

    .mobile-menu-toggle.active .close-icon {
        opacity: 1;
        transform: rotate(0deg);
    }

    /* Mobile Sidebar */
    .mobile-sidebar {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        z-index: 1000;
        transition: right 0.3s ease-in-out;
    }

    .mobile-sidebar.active {
        right: 0;
    }

    .mobile-sidebar-overlay {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(5px);
        -webkit-backdrop-filter: blur(5px);
    }

    .mobile-sidebar-content {
        position: absolute;
        top: 0;
        right: 0;
        width: 280px;
        height: 100%;
        background-color: rgba(255, 255, 255, 0.1);
        /* Trong suốt với chút trắng */
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        display: flex;
        flex-direction: column;
        padding: 2rem 1.5rem;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.3);
    }

    .mobile-sidebar-header {
        display: flex;
        justify-content: flex-end;
        align-items: center;
        margin-bottom: 2rem;
        padding-bottom: 1.5rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .mobile-sidebar-close {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 30px;
        height: 30px;
        background: none;
        border: none;
        color: var(--color-text-white);
        cursor: pointer;
    }

    .mobile-sidebar-close i {
        font-size: 1.5rem;
        color: var(--color-text-white);
        transition: color 0.3s ease;
    }

    .mobile-nav ul {
        list-style: none;
        margin: 0 0 2rem 0;
        padding: 0;
    }

    .mobile-nav li {
        margin-bottom: 0.8rem;
    }

    .mobile-nav a {
        color: var(--color-text-white);
        text-decoration: none;
        font-size: 0.6rem;
        font-weight: 500;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        padding: 0.4rem 0;
        display: inline-block;
        position: relative;
        transition: color 0.3s ease;
    }

    .mobile-nav a::after {
        content: "";
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 1px;
        background-color: var(--color-text-white);
        transition: width 0.3s ease-out;
    }

    .mobile-nav a:hover::after {
        width: 100%;
    }

    .mobile-lang-switcher {
        display: flex;
        align-items: center;
        gap: 1rem;
        margin-top: auto;
        padding-top: 1rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .mobile-lang-switcher .divider {
        width: 1px;
        height: 20px;
        background-color: rgba(255, 255, 255, 0.3);
    }

    .mobile-lang-switcher a {
        color: var(--color-text-white);
        text-decoration: none;
        font-size: 0.6rem;
    }

    /* ===== FIRST SECTION (HERO) RESPONSIVE ===== */
    .first-section {
        height: 100vh;
        position: relative;
        overflow: hidden;
    }

    .first-section-text {
        position: absolute;
        bottom: 0;
        left: 0;
        z-index: 3;
    }

    .first-section-text h2 {
        left: var(--hero-text-left);
        font-size: var(--font-size-hero-title);
        bottom: 170px;
        width: calc(100% - 2rem);
        text-align: left;
        color: var(--color-primary);
        font-family: var(--font-family-base);
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
        z-index: 3;
        position: absolute;
        margin: 0;
    }

    .first-section-text p {
        left: var(--hero-text-left);
        bottom: 80px;
        width: var(--hero-text-width);
        font-size: var(--font-size-hero-text);
        line-height: 1.3;
        color: var(--color-text-white);
        font-family: var(--font-family-base);
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
        z-index: 3;
        position: absolute;
        margin: 0;
    }

    /* ===== PORTFOLIO FILTERS RESPONSIVE ===== */
    .filters-container {
        margin: 0 var(--container-margin);
        padding: 1rem 0;
    }

    .filters-header {
        flex-direction: row;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        background-color: var(--color-component-bg);
        backdrop-filter: blur(5px);
        padding: 0.8rem 1.2rem;
        border-radius: var(--radius-md);
    }

    .filters-title {
        font-size: var(--font-size-small);
        font-weight: 500;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }

    .filters-icon {
        font-size: var(--font-size-small);
        color: var(--color-text-white);
    }

    .filter-buttons {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
        width: 100%;
    }

    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: var(--font-size-small);
        border-radius: var(--radius-sm);
        white-space: nowrap;
    }

    .filter-toggle {
        padding: 0.5rem 1rem;
        font-size: var(--font-size-small);
    }

    /* ===== PORTFOLIO PROJECTS RESPONSIVE ===== */
    .projects-container {
        margin: 0 var(--container-margin);
        padding: var(--section-padding) 0;
        grid-template-columns: var(--grid-columns);
        gap: 0.8rem;
    }

    .project-item {
        margin-bottom: 1rem;
    }

    .project-image {
        height: var(--project-image-height);
    }

    .project-info {
        padding: 1rem;
    }

    .project-title {
        font-size: var(--font-size-h3);
        margin-bottom: 0.5rem;
    }

    .project-category {
        font-size: var(--font-size-small);
    }

    /* ===== PORTFOLIO GRID MOBILE ===== */
    .portfolio-grid {
        grid-template-columns: var(--grid-columns);
        gap: 1rem;
        padding: var(--section-padding) var(--container-padding);
    }

    /* ===== FILTER SIDEBAR RESPONSIVE ===== */
    .filter-sidebar {
        position: fixed;
        top: 0;
        right: calc(-1 * var(--sidebar-width));
        width: var(--sidebar-width);
        height: 100vh;
        background-color: rgba(37, 37, 37, 0.98);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        z-index: 1100;
        transition: right 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
        overflow-y: auto;
        opacity: 0;
        visibility: hidden;
    }

    .filter-sidebar.active {
        right: 0;
        opacity: 1;
        visibility: visible;
    }

    .sidebar-content {
        padding: var(--sidebar-padding);
        height: 100%;
        display: flex;
        flex-direction: column;
        box-sizing: border-box;
    }

    .sidebar-header h3 {
        font-size: var(--font-size-h2);
        margin-bottom: 1rem;
    }

    .sidebar-close {
        position: absolute;
        top: 1rem;
        right: 1rem;
        left: auto;
        font-size: 1.5rem;
    }

    .filter-group {
        margin-bottom: 1.5rem;
    }

    .filter-group h4 {
        font-size: var(--font-size-h4);
        margin-bottom: 0.8rem;
    }

    .filter-options {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }

    .filter-option {
        padding: 0.6rem 1rem;
        font-size: var(--font-size-small);
        border-radius: var(--radius-sm);
    }

    .filter-apply {
        width: 100%;
        padding: 0.8rem;
        background-color: var(--color-primary);
        color: var(--color-text-white);
        border: none;
        border-radius: var(--radius-md);
        font-size: var(--font-size-normal);
        letter-spacing: 0.5px;
        text-transform: uppercase;
        cursor: pointer;
        transition: all 0.3s ease;
        margin-top: 1rem;
    }

    /* ===== CALL BUTTON RESPONSIVE ===== */
    .fixed-call-button {
        position: fixed;
        width: var(--call-button-size);
        height: var(--call-button-size);
        bottom: var(--call-button-bottom);
        right: var(--call-button-right);
        font-size: 1.2rem;
        background-color: var(--color-primary);
        color: var(--color-text-white);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        z-index: 200;
        transition: transform 0.3s ease;
    }

    .fixed-call-button:hover {
        transform: scale(1.1);
    }

    /* ===== FOOTER RESPONSIVE ===== */
    .footer-wrapper {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        margin-top: 1rem;
    }

    .footer-column {
        width: 100%;
    }

    .footer-brand {
        order: 0;
        text-align: center;
    }

    .footer-brand h2 {
        font-size: var(--footer-brand-h2-size);
    }

    .footer-column h4 {
        font-size: 0.7rem;
        margin-bottom: 0.5rem;
    }

    .footer-column p {
        font-size: 0.65rem;
        margin-bottom: 0.8rem;
    }

    .footer-column ul li a {
        font-size: 0.7rem;
    }

    .footer-socials {
        justify-content: center;
        gap: 0.5rem;
    }

    .footer-socials a {
        width: 25px;
        height: 25px;
        font-size: 12px;
    }

    /* ===== FIXED ELEMENTS RESPONSIVE ===== */
    .fixed-call-button {
        width: 40px;
        height: 40px;
        bottom: 15px;
        right: 15px;
        font-size: 16px;
    }

    /* ===== POPUP RESPONSIVE ===== */
    .popup-content {
        max-width: 90%;
        margin: 0 1rem;
        padding: 1rem;
    }

    .popup-header h3 {
        font-size: var(--font-size-h4);
        margin-top: 2rem;
    }

    .popup-body {
        flex-direction: column;
        gap: 1rem;
        padding: 0.8rem;
    }

    .whatsapp-button {
        font-size: var(--font-size-small);
        padding: 0.6rem 1rem;
    }

    .qr-section span {
        font-size: var(--font-size-small);
    }

    .qr-image {
        width: var(--qr-image-size);
        height: var(--qr-image-size);
    }

    .ri-close-line {
        font-size: 1.2rem;
    }
}

/* ===== TABLET RESPONSIVE (481px - 768px) ===== */
@media (min-width: 481px) and (max-width: 768px) {

    /* Tablet Variables */
    :root {
        --tablet-header-height: 100px;
        --tablet-section-padding: 30px;
        --tablet-container-padding: 1.5rem;
        --tablet-font-size-h1: 2.5rem;
        --tablet-font-size-h2: 1.8rem;
        --tablet-font-size-h4: 1.2rem;
        --tablet-font-size-large: 1.3rem;
        --tablet-font-size-normal: 1.1rem;
        --tablet-font-size-small: 0.9rem;
        --tablet-logo-width: 80px;
        --tablet-logo-divider-width: 200%;
        --tablet-grid-columns: repeat(2, 1fr);
        --tablet-project-image-height: 300px;
        --tablet-sidebar-width: 350px;
        --tablet-sidebar-padding: 1.5rem;
        --tablet-call-button-size: 45px;
        --tablet-call-button-bottom: 20px;
        --tablet-call-button-right: 20px;
        --tablet-qr-image-size: 130px;
    }

    /* Override base variables for tablet */
    :root {
        --header-height: 70px;
        --section-padding: 25px;
        --container-padding: 1.5rem;
        --font-size-h1: 2rem;
        --font-size-h2: 1.5rem;
        --font-size-h3: 1.2rem;
        --font-size-h4: 1rem;
        --font-size-large: 1.1rem;
        --font-size-normal: 0.9rem;
        --font-size-small: 0.85rem;
        --gap-base: 1.2rem;
        --radius-md: 12px;

        /* Override additional variables for tablet */
        --logo-width: 60px;
        --logo-divider-width: 200%;
        --expertise-image-height: 300px;
        --team-section-height: auto;
        --team-wrapper-height: auto;
        --philosophy-font-size: 2rem;
        --team-content-h2-size: 1.5rem;
        --footer-brand-h2-size: 1.4rem;
        --team-content-padding: 1.5rem;
        --consultation-form-width: 100%;
        --qr-image-size: 140px;
        --grid-columns: 1fr;
    }

    /* Global Tablet Styles */
    body {
        padding-top: var(--header-height);
        overflow-x: hidden;
    }

    /* Header Tablet Styles */
    .main-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        padding: 0.6rem var(--container-padding);
        height: var(--header-height);
        z-index: 100;
        background-color: rgba(0, 0, 0, 0.2);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .logo-image {
        width: var(--logo-width);
        height: auto;
    }

    .header-left {
        display: flex;
        align-items: center;
        gap: 0.8rem;
    }

    .logo-divider,
    .breadcrumb {
        display: none;
    }

    /* Navigation Menu - Hide on tablet */
    .navigation-menu {
        display: none;
    }

    /* Mobile Menu Button */
    .mobile-menu-toggle {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 45px;
        height: 45px;
        background: none;
        border: none;
        cursor: pointer;
        z-index: 1001;
        padding: 0;
        position: relative;
    }

    .hamburger-icon,
    .close-icon {
        font-size: 1.4rem;
        color: var(--color-text-white);
        transition: all 0.3s ease;
        position: absolute;
    }

    .hamburger-icon {
        opacity: 1;
        transform: rotate(0deg);
    }

    .close-icon {
        opacity: 0;
        transform: rotate(90deg);
    }

    .mobile-menu-toggle.active .hamburger-icon {
        opacity: 0;
        transform: rotate(-90deg);
    }

    .mobile-menu-toggle.active .close-icon {
        opacity: 1;
        transform: rotate(0deg);
    }

    /* Mobile Sidebar */
    .mobile-sidebar {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        z-index: 1000;
        transition: right 0.3s ease-in-out;
    }

    .mobile-sidebar.active {
        right: 0;
    }

    .mobile-sidebar-overlay {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(5px);
        -webkit-backdrop-filter: blur(5px);
    }

    .mobile-sidebar-content {
        position: absolute;
        top: 0;
        right: 0;
        width: 320px;
        height: 100%;
        background-color: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        display: flex;
        flex-direction: column;
        padding: 2.5rem 2rem;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.3);
    }

    .mobile-sidebar-header {
        display: flex;
        justify-content: flex-end;
        align-items: center;
        margin-bottom: 1.5rem;
        padding-bottom: 2rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .mobile-sidebar-close {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 35px;
        height: 35px;
        background: none;
        border: none;
        color: var(--color-text-white);
        cursor: pointer;
    }

    .mobile-sidebar-close i {
        font-size: 1.8rem;
    }

    .mobile-nav ul {
        list-style: none;
        margin: 0 0 2rem 0;
        padding: 0;
    }

    .mobile-nav li {
        margin-bottom: 1rem;
    }

    .mobile-nav a {
        color: var(--color-text-white);
        text-decoration: none;
        font-size: 0.8rem;
        font-weight: 500;
        padding: 0.5rem 0;
        display: inline-block;
        position: relative;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }

    .mobile-nav a::after {
        content: "";
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 1px;
        background-color: var(--color-text-white);
        transition: width 0.3s ease-out;
    }

    .mobile-nav a:hover::after {
        width: 100%;
    }

    .mobile-lang-switcher {
        display: flex;
        align-items: center;
        justify-content: left;
        gap: 1.2rem;
        margin-top: auto;
        padding-top: 1.5rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .mobile-lang-switcher .divider {
        width: 1px;
        height: 24px;
        background-color: rgba(255, 255, 255, 0.3);
    }

    .mobile-lang-switcher a {
        color: var(--color-text-white);
        text-decoration: none;
        font-size: 0.8rem;
        padding: 0.6rem;
    }

    /* Hero Section Tablet */
    .first-section-text {
        position: absolute;
        bottom: 0;
        left: 0;
        z-index: 3;
    }

    .first-section-text h2 {
        font-size: 2.5rem;
        left: 2rem;
        bottom: 200px;
        color: var(--color-primary);
        font-family: var(--font-family-base);
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
        z-index: 3;
        position: absolute;
        margin: 0;
    }

    .first-section-text p {
        font-size: 1.1rem;
        left: 2rem;
        bottom: 100px;
        width: 80%;
        color: var(--color-text-white);
        font-family: var(--font-family-base);
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
        z-index: 3;
        position: absolute;
        margin: 0;
    }

    /* Portfolio Grid Tablet */
    .portfolio-grid {
        grid-template-columns: var(--grid-columns);
        gap: 1.5rem;
        padding: var(--section-padding) var(--container-padding);
    }

    .project-item {
        height: var(--project-image-height);
        position: relative;
        border-radius: var(--radius-md);
        overflow: hidden;
    }

    .project-item img {
        height: 100%;
        object-fit: cover;
    }

    /* Project Info Tablet */
    .project-info {
        padding: 1.2rem;
        background-color: rgba(0, 0, 0, 0.8);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-radius: 0 0 var(--radius-md) var(--radius-md);
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 2;
    }

    .project-title {
        font-size: var(--font-size-h3);
        margin-bottom: 0.5rem;
        color: var(--color-text-white);
        font-family: var(--font-family-base);
        font-weight: 500;
    }

    .project-category {
        font-size: var(--font-size-small);
        color: var(--color-primary);
        font-family: var(--font-family-base);
        text-transform: uppercase;
        letter-spacing: 0.5px;
        font-weight: 500;
    }

    .project-description {
        font-size: var(--font-size-small);
        color: var(--color-text-light);
        font-family: var(--font-family-base);
        margin-top: 0.5rem;
        line-height: 1.4;
    }

    /* Projects Container Tablet */
    .projects-container {
        padding: var(--section-padding) 0;
    }

    /* Filters Container Tablet */
    .filters-container {
        padding: var(--section-padding) 0;
    }

    /* Filter Sidebar Tablet */
    .filter-sidebar {
        width: var(--sidebar-width);
        z-index: 1100;
        right: calc(-1 * var(--sidebar-width));
        opacity: 0;
        visibility: hidden;
    }

    .filter-sidebar.active {
        right: 0;
        opacity: 1;
        visibility: visible;
    }

    .sidebar-content {
        padding: var(--sidebar-padding);
    }

    /* ===== FOOTER RESPONSIVE ===== */
    .footer-wrapper {
        display: flex;
        flex-direction: column;
        gap: 1.5rem;
        margin-top: 1.5rem;
    }

    .footer-brand h2 {
        font-size: var(--footer-brand-h2-size);
    }

    .footer-column h4 {
        font-size: 0.8rem;
        margin-bottom: 0.6rem;
    }

    .footer-column p {
        font-size: 0.75rem;
        margin-bottom: 1rem;
    }

    .footer-column ul li a {
        font-size: 0.8rem;
    }

    .footer-socials {
        justify-content: center;
        gap: 0.8rem;
    }

    .footer-socials a {
        width: 30px;
        height: 30px;
        font-size: 14px;
    }

    /* ===== FIXED ELEMENTS RESPONSIVE ===== */
    .fixed-call-button {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
        font-size: 18px;
    }

    /* ===== POPUP RESPONSIVE ===== */
    .popup-content {
        max-width: 85%;
        margin: 0 1.5rem;
        padding: 1.5rem;
    }

    .popup-header h3 {
        font-size: var(--font-size-h3);
        margin-top: 2rem;
    }

    .popup-body {
        flex-direction: column;
        gap: 1.2rem;
        padding: 1rem;
    }

    .whatsapp-button {
        font-size: var(--font-size-small);
        padding: 0.8rem 1.2rem;
    }

    .qr-section span {
        font-size: var(--font-size-small);
    }

    .qr-image {
        width: var(--qr-image-size);
        height: var(--qr-image-size);
    }
}


/* ===== DESKTOP STYLES (Hide mobile elements) ===== */
@media (min-width: 769px) {
    .mobile-menu-toggle {
        display: none !important;
    }

    .mobile-sidebar {
        display: none !important;
    }

    .navigation-menu {
        display: flex !important;
    }
}