/* ========================================================================
   GT Cargas Premium - CSS Architecture
   ======================================================================== */

:root {
    /* Color Palette - Cyber Dark with Neon Emerald */
    --bg-dark: #070B0A;
    --bg-darker: #040605;
    --bg-card: rgba(18, 25, 22, 0.4);

    --brand-primary: #00E676;
    /* Vivid Neon Emerald */
    --brand-hover: #00C853;
    --brand-glow: rgba(0, 230, 118, 0.4);

    --text-primary: #FFFFFF;
    --text-secondary: #9BA3A0;
    --text-muted: #646E6A;

    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-bg: rgba(20, 28, 24, 0.35);
    --glass-blur: blur(16px);

    /* Typography */
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ========================================================================
   Reset & Base Styles
   ======================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

/* ========================================================================
   Typography
   ======================================================================== */
h1,
h2,
h3,
h4,
h5 {
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.text-gradient {
    background: linear-gradient(135deg, #FFFFFF 0%, var(--brand-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================================================
   Components
   ======================================================================== */
/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    outline: none;
}

.btn-primary {
    background-color: var(--brand-primary);
    color: var(--bg-darker);
    box-shadow: 0 4px 14px var(--brand-glow);
}

.btn-primary:hover {
    background-color: var(--brand-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--brand-glow);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
    background-color: var(--glass-bg);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Glassmorphism utility */
.glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
}

.glass:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(20, 28, 24, 0.45);
}

/* ========================================================================
   Layout & Sections
   ======================================================================== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ========================================================================
   Header / Navbar
   ======================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(7, 11, 10, 0.7);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    transition: background var(--transition-smooth), padding var(--transition-smooth);
    padding: 1rem 0;
}

.navbar.scrolled {
    padding: 0.75rem 0;
    background: rgba(4, 6, 5, 0.9);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.brand-logo {
    height: 120px;
    /* Tamaño mucho más grande forzado */
    width: auto;
    object-fit: contain;
    margin: -35px 0;
    /* Evita que ensanche excesivamente la barra de navegación */
    /* Opción para resaltar sobre fondo oscuro */
    filter: brightness(1.2) drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5));
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--brand-primary);
    transition: width var(--transition-fast);
}

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ========================================================================
   Hero Section
   ======================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 0 2rem;
    padding-top: 80px;
    /* Offset for fixed nav */
    background: url('assets/hero-bg.png') no-repeat center center/cover;
}

/* Gradient overlay to ensure text readability over the image */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg,
            rgba(7, 11, 10, 0.6) 0%,
            rgba(7, 11, 10, 0.8) 50%,
            var(--bg-dark) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1280px;
    margin: 0 auto;
    width: 100%;
}

.hero-badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    background: rgba(0, 230, 118, 0.1);
    color: var(--brand-primary);
    border: 1px solid rgba(0, 230, 118, 0.2);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(3rem, 5vw, 5rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    max-width: 800px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 2.5rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

/* ========================================================================
   Social Proof (Logos)
   ======================================================================== */
.social-proof {
    padding: 4rem 2rem;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--glass-border);
}

.proof-text {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 2rem;
}

.logos-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.client-logo-img {
    height: 45px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    opacity: 0.5;
    transition: all var(--transition-fast);
}

.client-logo-img:hover {
    opacity: 1;
    transform: scale(1.05);
}

/* ========================================================================
   Features Section
   ======================================================================== */
.features {
    padding: var(--spacing-xl) 2rem 4rem 2rem;
    background: var(--bg-dark);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 20%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: var(--brand-primary);
    filter: blur(250px);
    opacity: 0.05;
    border-radius: 50%;
    z-index: 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    max-width: 1280px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.feature-card {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: rgba(0, 230, 118, 0.1);
    border: 1px solid rgba(0, 230, 118, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--brand-primary);
    margin-bottom: 0.5rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ========================================================================
   Mid CTA Banner
   ======================================================================== */
.mid-cta {
    max-width: 1000px;
    margin: 0 auto;
    padding: 4rem 2rem;
    text-align: center;
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(20, 28, 24, 0.8) 0%, rgba(7, 11, 10, 0.9) 100%);
    border: 1px solid rgba(0, 230, 118, 0.3);
    position: relative;
    overflow: hidden;
}

.mid-cta::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: var(--brand-primary);
    filter: blur(150px);
    opacity: 0.15;
    border-radius: 50%;
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ========================================================================
   About Section
   ======================================================================== */
.about {
    padding: var(--spacing-xl) 2rem;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    max-width: 1280px;
    margin: 0 auto;
    align-items: center;
}

.about-text {
    padding: 4rem;
}

.about-text h3 {
    font-size: 2.25rem;
    margin-bottom: 1.5rem;
}

.about-text>p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

.mission-vision {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.mv-block h4 {
    color: var(--brand-primary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

.mv-block p {
    color: var(--text-secondary);
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.value-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    padding: 1.5rem;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: background var(--transition-fast);
}

.value-card:hover {
    background: rgba(255, 255, 255, 0.06);
}

.value-icon {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.value-card h4 {
    font-size: 1.1rem;
}

.value-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ========================================================================
   Fleet Section
   ======================================================================== */
.fleet-section {
    padding: 4rem 2rem var(--spacing-xl) 2rem;
    background: var(--bg-dark);
    position: relative;
}

.fleet-slider-wrapper {
    position: relative;
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0 1rem;
}

.slider-btn {
    background: rgba(0, 230, 118, 0.1);
    border: 1px solid var(--brand-primary);
    color: var(--brand-primary);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.5rem;
    transition: all var(--transition-fast);
    z-index: 10;
    flex-shrink: 0;
}

.slider-btn:hover {
    background: var(--brand-primary);
    color: var(--bg-darker);
    transform: scale(1.1);
}

.fleet-slider {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 2.5rem;
    padding: 2rem 0;
    scrollbar-width: none;
    /* Firefox */
    flex-grow: 1;
}

.fleet-slider::-webkit-scrollbar {
    display: none;
    /* Chrome/Safari */
}

.fleet-card {
    min-width: 250px;
    scroll-snap-align: center;
    flex-shrink: 0;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.vehicle-wrapper {
    position: relative;
    display: inline-block;
    margin-bottom: 1.5rem;
}

.fleet-img {
    height: 140px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 15px 15px rgba(0, 0, 0, 0.9));
}

.fleet-img.flip-x {
    transform: scaleX(-1);
    /* Hace que miren a la izquierda si originalmente miraban a la derecha */
}

.vehicle-logo-overlay {
    position: absolute;
    height: 25px;
    width: auto;
    opacity: 0.9;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.5));
}

/* Posición centrada en la caja de carga */
.pos-furgon {
    top: 55%;
    left: 55%;
    transform: translate(-50%, -50%);
}

.pos-camion {
    top: 50%;
    left: 60%;
    transform: translate(-50%, -50%);
}

.fleet-specs {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    margin-top: 0.5rem;
}

.fleet-dims {
    font-size: 0.8rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}

.fleet-card h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
}

.fleet-capacity {
    font-size: 0.9rem;
    color: var(--brand-primary);
    font-weight: 600;
}

/* Additional Services Sub-section */
.additional-services-header {
    text-align: center;
    max-width: 600px;
    margin: 4rem auto 2rem;
}

.additional-services-header h3 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.additional-services-header p {
    color: var(--text-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

.service-card {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 2rem;
    transition: transform var(--transition-fast);
}

.service-card:hover {
    transform: translateY(-5px);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--brand-primary);
    background: rgba(0, 230, 118, 0.1);
    padding: 1rem;
    border-radius: 12px;
}

.service-info h4 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.service-info p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* ========================================================================
   Testimonials Section
   ======================================================================== */
.testimonials {
    padding: var(--spacing-xl) 2rem;
    background: var(--bg-darker);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1280px;
    margin: 0 auto;
}

.testimonial-card {
    padding: 3rem 2rem;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.quotes-icon {
    font-size: 2rem;
    color: var(--brand-primary);
    opacity: 0.5;
    margin-bottom: 1.5rem;
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: 2rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-logo {
    height: 38px;
    width: auto;
    max-width: 110px;
    object-fit: contain;
    opacity: 0.85;
    flex-shrink: 0;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-info strong {
    font-size: 0.95rem;
}

.author-info span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ========================================================================
   Contact Section
   ======================================================================== */
.contact-section {
    padding: var(--spacing-xl) 2rem;
    position: relative;
    background: url('assets/contact-bg.png') no-repeat center center/cover;
}

/* Dark overlay for contact background */
.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(4, 6, 5, 0.85);
    /* Heavy dark glass look */
    z-index: 1;
}

.contact-container {
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    /* Gap is handled by paddings */
    overflow: hidden;
}

.contact-info {
    padding: 4rem;
    background: rgba(0, 230, 118, 0.03);
    border-right: 1px solid var(--glass-border);
}

.contact-info h2 {
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.05rem;
    color: var(--text-primary);
}

.contact-list i {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.contact-list i.whatsapp-color {
    color: #25D366;
    /* Official Whatsapp Color for emphasis */
}

/* Form */
.contact-form {
    padding: 4rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1rem;
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--brand-primary);
    background: rgba(255, 255, 255, 0.08);
}

.form-group select option {
    background-color: var(--bg-darker);
    color: var(--text-primary);
}

.submit-btn {
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 1rem;
}

/* ========================================================================
   Footer
   ======================================================================== */
.site-footer {
    background: var(--bg-darker);
    padding: 2rem;
    border-top: 1px solid var(--glass-border);
    position: relative;
    z-index: 2;
    /* above contact bg */
}

.footer-bottom {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ========================================================================
   Floating WhatsApp Button
   ======================================================================== */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #25D366;
    color: #FFF;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: transform var(--transition-fast);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    color: #FFF;
}

.whatsapp-tooltip {
    position: absolute;
    right: 75px;
    top: 50%;
    transform: translateY(-50%) translateX(10px);
    background: #fff;
    color: #111;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    pointer-events: none;
}

.whatsapp-tooltip::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    border-width: 6px 0 6px 6px;
    border-style: solid;
    border-color: transparent transparent transparent #fff;
}

.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

/* ========================================================================
   Custom Multi-Select Dropdown (Contact Form)
   ======================================================================== */
.custom-select {
    position: relative;
    width: 100%;
}

.select-box {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1rem;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
}

.custom-select.active .select-box {
    border-color: var(--brand-primary);
    background: rgba(255, 255, 255, 0.08);
}

.select-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-darker);
    border: 1px solid var(--brand-primary);
    border-radius: 8px;
    margin-top: 0.5rem;
    z-index: 100;
    max-height: 250px;
    overflow-y: auto;
    display: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
}

.custom-select.active .select-dropdown {
    display: flex;
    flex-direction: column;
}

.select-dropdown label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: background var(--transition-fast);
    text-transform: none;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.select-dropdown label:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--brand-primary);
}

/* Custom Checkbox inside dropdown */
.select-dropdown input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.2);
    cursor: pointer;
    position: relative;
    padding: 0;
    margin: 0;
}

.select-dropdown input[type="checkbox"]:checked {
    background: var(--brand-primary);
    border-color: var(--brand-primary);
}

.select-dropdown input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid var(--bg-darker);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* ========================================================================
   Responsive Media Queries
   ======================================================================== */
@media (max-width: 1024px) {

    .about-grid,
    .contact-container {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .whatsapp-tooltip {
        display: none;
    }

    .nav-links {
        display: none;
        /* Hide for mobile initially */
    }

    .menu-toggle {
        display: block;
    }

    .navbar .btn {
        display: none;
        /* Hide primary CTA on small screens in header */
    }

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

    .hero-actions {
        flex-direction: column;
    }

    .contact-form {
        grid-template-columns: 1fr;
        padding: 2rem;
    }

    .contact-info {
        padding: 2rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}