/* Reset e Configurações Gerais */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #f5f5f5;
    --accent-color: #333;
    --text-color: #666;
    --text-dark: #2a2a2a;
    --white: #ffffff;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
    cursor: default;
    font-weight: 400;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    color: var(--primary-color);
}

/* Header */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
}

#header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 2px;
    font-family: 'Space Grotesk', sans-serif;
}

#nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

#nav a {
    color: var(--white);
    text-decoration: none;
    font-size: 14px;
    text-transform: capitalize;
    transition: var(--transition);
    position: relative;
    font-weight: 500;
    padding: 8px 0;
}

#nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--white);
    transition: width 0.3s ease;
}

#nav a:hover::after,
#nav a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    color: var(--white);
    font-size: 24px;
    cursor: pointer;
    transition: transform 0.3s ease;
    padding: 10px;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
}

.mobile-menu-btn:hover {
    transform: scale(1.1);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    background: url('Sem-Título-2.webp') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    will-change: transform;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 72px;
    font-weight: 300;
    margin-bottom: 20px;
    animation: fadeInDown 1s ease;
    letter-spacing: -2px;
    line-height: 1.1;
    color: var(--white);
}

.hero-title strong {
    font-weight: 700;
    color: var(--white);
}

.hero-subtitle {
    font-size: 48px;
    font-weight: 300;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease;
    min-height: 65px;
    display: flex;
    align-items: center;
    justify-content: center;
    letter-spacing: -2px;
}

.typed-text {
    font-weight: 600;
    color: var(--white);
}

.social-icons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 40px;
    animation: fadeIn 1.5s ease;
}

.social-icons a {
    width: 44px;
    height: 44px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.social-icons a:hover {
    background: var(--white);
    color: var(--primary-color);
    border-color: var(--white);
    transform: translateY(-5px) rotate(5deg);
}

.scroll-down {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    cursor: pointer;
}

.scroll-indicator {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 25px;
    position: relative;
}

.scroll-indicator::before {
    content: '';
    width: 6px;
    height: 10px;
    background: white;
    border-radius: 3px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 2s infinite;
}

@keyframes scroll-wheel {
    0% { top: 10px; opacity: 1; }
    100% { top: 30px; opacity: 0; }
}

/* Purpose/Manifesto Section */
.purpose {
    padding: 120px 0;
    background: var(--primary-color);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.purpose::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -5%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.purpose-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.purpose-title {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 50px;
    letter-spacing: -2px;
    color: var(--white);
}

.purpose-text p {
    font-size: 20px;
    line-height: 1.8;
    margin-bottom: 25px;
    color: rgba(255, 255, 255, 0.9);
}

.purpose-text p:last-child {
    margin-bottom: 0;
}

.purpose-text strong {
    color: var(--white);
    font-weight: 600;
}

/* About Section */
.about {
    padding: 100px 0;
    background: var(--white);
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.015) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.about.fade-in-view {
    opacity: 1;
    transform: translateY(0);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.8fr;
    gap: 60px;
    align-items: start;
}

.about-left {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-image img:hover {
    transform: scale(1.02);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
}

/* About Glitch - Nome e Cargo */
.about-glitch {
    display: block;
    width: 100%;
    padding: 20px;
    background: linear-gradient(135deg, #fafafa 0%, #ffffff 100%);
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    border-left: 4px solid var(--primary-color);
}

.glitch-wrap {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.2;
    gap: 8px;
}

.gk-name {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 900;
    font-size: clamp(1.6rem, 2.4vw, 2.4rem);
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: -0.02em;
    white-space: nowrap;
    display: block;
}

.gk-role {
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    font-size: clamp(0.8rem, 1.4vw, 0.95rem);
    color: var(--text-dark);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: block;
    margin-top: 4px;
}

.about-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.section-subtitle {
    font-size: 12px;
    color: var(--text-color);
    letter-spacing: 3px;
    margin-bottom: 30px;
    text-transform: uppercase;
    font-weight: 600;
}

.about-description {
    margin-bottom: 20px;
    line-height: 1.8;
    color: var(--text-color);
    font-size: 16px;
}

.about-description strong {
    color: var(--text-dark);
    font-weight: 600;
}

/* Como Trabalho Card - Dentro da seção Services */
.how-single-card {
    width: 100%;
    margin: 0 0 60px 0;
    background: var(--white);
    padding: 50px 60px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border-left: 4px solid var(--primary-color);
    text-align: center;
}

.how-single-card p {
    font-size: 18px;
    line-height: 1.9;
    color: var(--text-color);
    margin: 0;
}

/* Services Section */
.services {
    padding: 100px 0;
    background: var(--white);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.services.fade-in-view {
    opacity: 1;
    transform: translateY(0);
}

.section-title-center {
    font-size: 56px;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 80px;
    letter-spacing: -2px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.service-card {
    background: linear-gradient(135deg, #ffffff 0%, #fafafa 100%);
    padding: 50px 30px;
    text-align: center;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-left 0.3s ease;
    display: flex;
    flex-direction: column;
    opacity: 0;
    transform: translateY(30px);
    position: relative;
    overflow: hidden;
    border-left: 3px solid transparent;
}

.service-card.animate-in {
    animation: slideUpFade 0.6s ease forwards;
    animation-delay: calc(var(--animation-order) * 0.1s);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.service-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.02), transparent);
    transition: left 0.5s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover::after {
    left: 100%;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    border-left-color: var(--primary-color);
}

.service-icon {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 25px;
    transition: transform 0.3s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.service-description {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 25px;
    font-size: 15px;
}

.btn-service {
    display: inline-block;
    padding: 12px 30px;
    margin-top: auto;
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    z-index: 1;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-service::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--accent-color);
    transition: left 0.3s ease;
    z-index: -1;
}

.btn-service:hover::before {
    left: 0;
}

.btn-service:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
}

/* Projects Section */
.projects {
    padding: 100px 0;
    background: var(--secondary-color);
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.projects.fade-in-view {
    opacity: 1;
    transform: translateY(0);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 50px;
}

.project-card {
    background: var(--white);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    opacity: 0;
    transform: translateY(30px);
    overflow: hidden;
}

.project-card.animate-in {
    animation: slideUpFade 0.6s ease forwards;
    animation-delay: calc(var(--animation-order) * 0.1s);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.project-card a {
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
}

.project-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 15px;
    transition: transform 0.3s ease;
}

.project-card:hover img {
    transform: scale(1.05);
}

.project-card h3 {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.projects-link {
    margin-top: 20px;
}

/* Brands Carousel Section */
.brands-carousel {
    padding: 80px 0;
    background: #fafafa;
    overflow: hidden;
}

.brands-title {
    text-align: center;
    font-size: 18px;
    font-weight: 400;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 50px;
    font-family: 'Space Grotesk', sans-serif;
}

.carousel-wrapper {
    overflow: hidden;
    position: relative;
    width: 100%;
}

.carousel-track {
    display: flex;
    gap: 60px;
    animation: scroll 30s linear infinite;
    width: fit-content;
}

.brand-logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 150px;
    height: 80px;
    opacity: 0.6;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.brand-logo:hover {
    opacity: 1;
    transform: scale(1.1);
}

.brand-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

.brand-logo:hover img {
    filter: grayscale(0%);
}

.carousel-track:hover {
    animation-play-state: paused;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* Buttons */
.btn {
    padding: 15px 40px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    overflow: hidden;
    font-size: 16px;
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

/* Ripple Effect */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Contact Section */
.contact-new {
    padding: 100px 0;
    background: var(--white);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.contact-new.fade-in-view {
    opacity: 1;
    transform: translateY(0);
}

.contact-new .container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: flex-start;
}

.contact-left {
    text-align: left;
}

.contact-title {
    font-size: 56px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
    letter-spacing: -2px;
}

.contact-description {
    font-size: 18px;
    color: var(--text-color);
    margin-bottom: 40px;
    line-height: 1.8;
}

.contact-details p {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--text-color);
}

.contact-details p i {
    margin-right: 10px;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.contact-details p:hover i {
    transform: scale(1.2);
}

.contact-form .form-group {
    margin-bottom: 20px;
}

.contact-form label {
    display: block;
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form input[type="tel"],
.contact-form textarea {
    width: 100%;
    padding: 14px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 15px;
    color: var(--text-dark);
    background: #fafafa;
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
    min-height: 48px;
}

.contact-form input[type="text"]:focus,
.contact-form input[type="email"]:focus,
.contact-form input[type="tel"]:focus,
.contact-form textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    transform: translateY(-2px);
    background: var(--white);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .checkbox-group {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}

.contact-form .checkbox-group input {
    margin-right: 10px;
    margin-top: 5px;
    min-width: 18px;
    min-height: 18px;
}

.contact-form .checkbox-group label {
    font-size: 13px;
    font-weight: normal;
    color: var(--text-color);
    text-transform: none;
    letter-spacing: 0;
}

.contact-form .btn {
    width: 100%;
    cursor: pointer;
    border: none;
}

.whatsapp-btn {
    background-color: var(--primary-color);
    color: var(--white);
    border: 2px solid var(--primary-color);
    padding: 15px 30px;
    font-size: 16px;
    margin-top: 30px;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    font-weight: 600;
    min-height: 48px;
}

.whatsapp-btn:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.whatsapp-btn i {
    font-size: 22px;
    transition: transform 0.3s ease;
}

.whatsapp-btn:hover i {
    transform: rotate(15deg) scale(1.1);
}

/* Footer */
.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 40px 0;
    text-align: center;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    color: var(--white);
    font-size: 18px;
    transition: all 0.3s ease;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-social a:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-3px);
    border-color: var(--white);
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUpFade {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================
   MODAL DOS SERVIÇOS
   ========================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
}

.modal-content {
    position: relative;
    background: var(--white);
    width: 90%;
    max-width: 700px;
    max-height: 85vh;
    overflow-y: auto;
    border-radius: 20px;
    padding: 50px 40px 40px;
    z-index: 10000;
    animation: modalSlideIn 0.4s ease;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 36px;
    color: var(--text-color);
    cursor: pointer;
    line-height: 1;
    transition: all 0.3s ease;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--primary-color);
    transform: rotate(90deg) scale(1.1);
}

.modal-content h2 {
    font-size: 36px;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: -1px;
}

.modal-intro {
    font-size: 16px;
    color: var(--text-color);
    line-height: 1.6;
    margin-bottom: 30px;
}

.modal-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
    margin-top: 10px;
}

.modal-list {
    list-style: none;
    padding: 0;
    margin-bottom: 30px;
}

.modal-list li {
    padding: 15px 0;
    border-bottom: 1px solid #eee;
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-color);
    transition: padding-left 0.3s ease;
}

.modal-list li:hover {
    padding-left: 10px;
}

.modal-list li:last-child {
    border-bottom: none;
}

.modal-list strong {
    color: var(--primary-color);
    font-weight: 600;
    display: block;
    margin-bottom: 5px;
}

.modal-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 2px solid #f0f0f0;
}

.btn-modal {
    display: inline-block;
    padding: 18px 40px;
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-modal:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* ==========================================
   LOADING SCREEN
   ========================================== */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    text-align: center;
}

.loader-circle {
    width: 80px;
    height: 80px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--white);
    border-right-color: var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

.loader p {
    color: var(--white);
    font-size: 18px;
    letter-spacing: 2px;
    animation: pulse 1.5s ease-in-out infinite;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* ==========================================
   BACK TO TOP BUTTON
   ========================================== */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#back-to-top:hover {
    background: var(--accent-color);
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

#back-to-top:active {
    transform: translateY(-2px);
}

/* ==========================================
   RESPONSIVE DESIGN - MOBILE OPTIMIZED
   ========================================== */

/* Tablet/Medium Screens */
@media (max-width: 968px) {
    .hero-title {
        font-size: 56px;
    }

    .hero-subtitle {
        font-size: 36px;
    }

    .purpose-title {
        font-size: 42px;
    }

    .purpose-text p {
        font-size: 18px;
    }

    .section-title-center,
    .contact-title {
        font-size: 42px;
    }

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

    #nav {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 300px;
        height: calc(100vh - 70px);
        background: rgba(0, 0, 0, 0.95);
        transition: var(--transition);
        padding: 40px;
    }

    #nav.active {
        right: 0;
    }

    #nav ul {
        flex-direction: column;
        gap: 20px;
    }

    #nav a {
        font-size: 16px;
        padding: 12px 0;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-left {
        gap: 20px;
    }

    .how-single-card {
        padding: 40px 35px;
        margin-bottom: 50px;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

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

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

    .contact-left {
        text-align: center;
    }

    .contact-details {
        margin-top: 20px;
    }

    .footer .container {
        flex-direction: column;
        gap: 20px;
    }

    .brands-carousel {
        padding: 60px 0;
    }
    
    .carousel-track {
        gap: 40px;
    }
    
    .brand-logo {
        width: 120px;
        height: 60px;
    }

    #back-to-top {
        bottom: 20px;
        right: 20px;
        width: 48px;
        height: 48px;
        font-size: 18px;
    }
}

/* Mobile/Small Screens */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-height: 90vh;
        padding: 40px 25px 30px;
        border-radius: 15px;
    }

    .modal-content h2 {
        font-size: 28px;
    }

    .modal-intro {
        font-size: 15px;
    }

    .modal-content h3 {
        font-size: 18px;
    }

    .modal-list li {
        padding: 12px 0;
        font-size: 14px;
    }

    .btn-modal {
        width: 100%;
        padding: 16px 30px;
        font-size: 15px;
    }

    .modal-close {
        top: 15px;
        right: 15px;
        font-size: 30px;
        width: 40px;
        height: 40px;
    }
}

/* Mobile/Extra Small Screens */
@media (max-width: 640px) {
    .hero-title {
        font-size: 42px;
    }

    .hero-subtitle {
        font-size: 28px;
        min-height: 45px;
    }

    .purpose {
        padding: 80px 0;
    }

    .purpose-title {
        font-size: 32px;
    }

    .purpose-text p {
        font-size: 16px;
    }

    .section-title-center {
        font-size: 32px;
    }

    .contact-title {
        font-size: 32px;
    }

    .how-single-card {
        padding: 30px 25px;
        margin-bottom: 40px;
    }

    .how-single-card p {
        font-size: 16px;
    }

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

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

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

    .whatsapp-text {
        display: none;
    }

    .whatsapp-btn {
        justify-content: center;
        width: auto;
        min-width: 48px;
    }

    .modal-content {
        padding: 35px 20px 25px;
    }

    .modal-content h2 {
        font-size: 24px;
    }
}

/* Extra Small Phones */
@media (max-width: 480px) {
    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 24px;
        min-height: 40px;
    }

    .purpose-title {
        font-size: 28px;
    }

    .section-title-center,
    .contact-title {
        font-size: 28px;
    }

    .how-single-card p {
        font-size: 15px;
    }

    .social-icons a {
        width: 48px;
        height: 48px;
    }

    .contact-form input,
    .contact-form textarea {
        font-size: 16px;
    }
}

/* Landscape Mobile */
@media (max-width: 968px) and (orientation: landscape) {
    .hero {
        height: auto;
        min-height: 100vh;
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 48px;
    }

    .hero-subtitle {
        font-size: 32px;
    }
}