:root {
    --primary: #10b981;
    /* Emerald/Green theme for eco-friendly cleaning */
    --primary-light: #34d399;
    --primary-dark: #059669;
    --secondary: #0ea5e9;
    /* Blue accent for water/cleanliness */
    --dark: #0f172a;
    --dark-light: #475569;
    --light: #f8fafc;
    --white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 20px 40px -15px rgba(16, 185, 129, 0.2);
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);

    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-family);
    color: var(--dark);
    background-color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.3;
}

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

ul {
    list-style: none;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 120px 0;
}

.pb-0 {
    padding-bottom: 0 !important;
}

.bg-light {
    background-color: #f1f5f9;
}

.bg-white {
    background-color: var(--white);
}

.bg-gradient {
    background: linear-gradient(135deg, #f0fdf4 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.sub-heading {
    display: inline-block;
    color: var(--primary);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 2px;
    margin-bottom: 1rem;
    position: relative;
    padding-left: 40px;
}

.sub-heading::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 30px;
    height: 2px;
    background: var(--primary);
    transform: translateY(-50%);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header .sub-heading {
    padding-left: 0;
    padding-top: 15px;
}

.section-header .sub-heading::before {
    width: 40px;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.section-title {
    font-size: 2.8rem;
    color: var(--dark);
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--dark-light);
    font-size: 1.15rem;
    max-width: 650px;
    margin: 0 auto;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    height: 75px;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
}

.logo i {
    font-size: 1.8rem;
}

.logo-main {
    color: var(--dark);
    letter-spacing: 1px;
}

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

.nav-link {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--dark-light);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-btn {
    background: var(--primary);
    color: white;
    padding: 0.7rem 1.6rem;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
    transition: var(--transition);
}

.nav-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
    color: white;
}

.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
}

/* Hero */
.hero {
    position: relative;
    height: 100vh;
    min-height: 650px;
    display: flex;
    align-items: center;
    text-align: center;
    background: url('https://images.unsplash.com/photo-1628177142898-93e46e46248c?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(16, 185, 129, 0.6) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 850px;
    margin: 0 auto;
    padding: 0 2rem;
    color: white;
}

.badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(5px);
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    letter-spacing: 1px;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.hero-title .highlight {
    color: var(--primary-light);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    opacity: 0.95;
    font-weight: 300;
    line-height: 1.8;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

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

.btn {
    padding: 1rem 2.2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.5);
    color: white;
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
    backdrop-filter: blur(5px);
}

.btn-outline:hover {
    background: white;
    color: var(--primary-dark);
    transform: translateY(-3px);
}

.scroll-down {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: white;
    font-size: 1.5rem;
    animation: bounce 2s infinite;
    opacity: 0.7;
}

.scroll-down:hover {
    opacity: 1;
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0) translateX(-50%);
    }

    40% {
        transform: translateY(-20px) translateX(-50%);
    }

    60% {
        transform: translateY(-10px) translateX(-50%);
    }
}

/* Stats */
.stats-section {
    padding: 60px 0;
    border-bottom: 1px solid #e2e8f0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transform: translateY(-80px);
    margin-bottom: -40px;
}

.stat-item {
    text-align: center;
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--primary-light);
    margin-bottom: 1rem;
    opacity: 0.8;
}

.stat-item h3 {
    font-size: 3rem;
    display: inline-block;
    color: var(--dark);
    font-weight: 800;
    line-height: 1;
}

.stat-item span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-item p {
    color: var(--dark-light);
    font-weight: 600;
    margin-top: 0.5rem;
}

/* About */
.about-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.about-card {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(16, 185, 129, 0.2);
}

.icon-wrapper {
    width: 80px;
    height: 80px;
    background: #ecfdf5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--primary);
    transition: var(--transition);
}

.about-card:hover .icon-wrapper {
    background: var(--primary);
    color: white;
    transform: rotateY(360deg);
    transition: transform 0.6s;
}

.about-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.about-card p {
    color: var(--dark-light);
    font-size: 0.95rem;
}

/* Services */
.service-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.s-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid #f1f5f9;
}

.s-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.s-card-img {
    height: 250px;
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
}

.s-card-img::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.6), transparent);
}

.s-card-content {
    padding: 2.5rem 2rem;
    position: relative;
    z-index: 2;
    background: white;
}

.s-badge {
    position: absolute;
    top: -16px;
    right: 30px;
    background: var(--secondary);
    color: white;
    padding: 0.4rem 1.2rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(14, 165, 233, 0.3);
    border: 2px solid white;
}

.s-card h3 {
    margin-bottom: 1rem;
    font-size: 1.4rem;
    color: var(--dark);
}

.s-card p {
    color: var(--dark-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Process */
.process-wrapper {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    position: relative;
}

.process-wrapper::after {
    content: '';
    position: absolute;
    top: 60px;
    left: 10%;
    width: 80%;
    height: 2px;
    background: #e2e8f0;
    z-index: 1;
    border-style: dashed;
}

.process-step {
    position: relative;
    z-index: 2;
    text-align: center;
    background: transparent;
    padding: 2rem 1rem;
    border-radius: 20px;
    transition: var(--transition);
}

.process-step:hover {
    background: white;
    box-shadow: var(--shadow);
    transform: translateY(-5px);
}

.step-num {
    font-size: 3.5rem;
    font-weight: 900;
    color: #f1f5f9;
    position: absolute;
    top: 10px;
    right: 20px;
    z-index: -1;
    transition: color 0.3s;
}

.process-step:hover .step-num {
    color: #e2e8f0;
}

.step-icon {
    width: 90px;
    height: 90px;
    background: white;
    border: 2px dashed var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2.5rem;
    color: var(--primary);
    box-shadow: 0 0 0 10px var(--light);
    transition: var(--transition);
}

.process-step:hover .step-icon {
    background: var(--primary);
    color: white;
    border-style: solid;
}

.process-step h3 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.process-step p {
    color: var(--dark-light);
    font-size: 0.95rem;
}

/* Reviews */
.review-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.review-item {
    background: white;
    padding: 3rem 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
    border: 1px solid #f1f5f9;
    position: relative;
}

.review-item::before {
    content: '\201C';
    position: absolute;
    top: 10px;
    left: 20px;
    font-size: 6rem;
    color: #ecfdf5;
    font-family: serif;
    line-height: 1;
}

.stars {
    color: #fbbf24;
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    letter-spacing: 2px;
    position: relative;
    z-index: 2;
}

.r-text {
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--dark);
    margin-bottom: 2rem;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

.r-author {
    color: var(--dark-light);
    font-size: 0.95rem;
    font-weight: 700;
}

/* FAQ Overlay Accordion */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: white;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active {
    border-color: var(--primary);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.1);
}

.faq-question {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.faq-question h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--dark);
    margin: 0;
    transition: color 0.3s;
}

.faq-item.active .faq-question h3 {
    color: var(--primary);
}

.faq-question i {
    color: var(--dark-light);
    transition: transform 0.4s;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
    color: var(--primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 2rem;
    transition: all 0.4s ease;
    background: #fafbfc;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 2rem 1.5rem;
}

.faq-answer p {
    color: var(--dark-light);
    line-height: 1.7;
    border-top: 1px dashed #e2e8f0;
    padding-top: 1rem;
}

/* Contact */
.contact-container {
    padding: 80px 0;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h2 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
}

.contact-info p {
    color: var(--dark-light);
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

.info-list li {
    display: flex;
    align-items: flex-start;
    gap: 1.2rem;
    margin-bottom: 2rem;
}

.info-icon {
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.3rem;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.info-title {
    display: block;
    font-weight: 700;
    margin-bottom: 0.2rem;
    color: var(--dark);
    font-size: 1.1rem;
}

.info-detail {
    color: var(--dark-light);
    font-size: 1rem;
}

.contact-form-wrapper {
    background: white;
    padding: 3.5rem;
    border-radius: 24px;
    box-shadow: var(--shadow-hover);
    border: 1px solid #f1f5f9;
    transform: translateY(-40px);
}

.form-row {
    display: flex;
    gap: 1.5rem;
}

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

.form-group.half {
    width: 50%;
}

.form-group label {
    display: block;
    margin-bottom: 0.6rem;
    font-weight: 600;
    color: var(--dark);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1.2rem;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--light);
    color: var(--dark);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: white;
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
}

.submit-btn {
    width: 100%;
    background: var(--primary);
    color: white;
    padding: 1.3rem;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.8rem;
    margin-top: 1rem;
}

.submit-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
}

/* Footer */
.footer {
    background: var(--dark);
    color: white;
    padding: 5rem 0 0;
}

.footer-container {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 4rem;
    padding-bottom: 4rem;
}

.brand-col .footer-logo {
    font-size: 2.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.brand-col .logo-main {
    color: white;
}

.brand-desc {
    color: #94a3b8;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-col h4 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.8rem;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 30px;
    height: 2px;
    background: var(--primary);
}

.footer-col ul li {
    margin-bottom: 0.8rem;
}

.footer-col ul li a {
    color: #94a3b8;
    font-weight: 500;
}

.footer-col ul li a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.contact-col p {
    color: #94a3b8;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.cs-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: white;
    margin-bottom: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid #1e293b;
    padding: 1.5rem 0;
    text-align: center;
    color: #64748b;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        padding: 30px;
    }

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

    .process-wrapper::after {
        display: none;
    }

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

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

    .contact-form-wrapper {
        transform: translateY(0);
    }
}

@media (max-width: 992px) {
    .hero-title {
        font-size: 3rem;
    }

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

    .footer-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--glass-bg);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow);
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: clip-path 0.4s ease-in-out;
        gap: 1.5rem;
    }

    .nav-links.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero-title {
        font-size: 2.3rem;
    }

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

    .btn {
        width: 100%;
        justify-content: center;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        transform: translateY(-50px);
    }

    .about-grid,
    .service-cards,
    .process-wrapper,
    .review-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .form-group.half {
        width: 100%;
    }

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