/* =========================================
   1. GLOBAL VARIABLES & RESET
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

:root {
    --primary-blue: #0056b3;
    --light-blue-bg: #e6f7ff;
    --cta-yellow: #ffc107;
    --text-dark: #333;
    --white: #fff;
}

body {
    background-color: #f9fcff;
    overflow-x: hidden; /* Prevent horizontal scroll globally */
}

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

/* =========================================
   2. HEADER & NAVIGATION
   ========================================= */
/* Top Bar */
.top-bar { 
    background-color: #ffc107; 
    color: #333; 
    padding: 8px 0; 
    font-size: 13px; 
    width: 100%; 
    font-weight: 600;
}
.top-bar-content { display: flex; justify-content: space-between; align-items: center; }
.top-info span { margin-right: 20px; } 
.top-info i { color: var(--primary-blue); margin-right: 5px; }

/* Main Header */
.main-header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    width: 100%;
    transition: all 0.3s ease;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo img {
    height: 50px;
    width: auto;
    object-fit: contain;
    display: block;
}

/* Nav Menu (Desktop) */
.nav-menu {
    display: flex;
    gap: 25px;
    align-items: center;
}

.nav-link {
    color: #333;
    font-weight: 500;
    font-size: 15px;
    text-decoration: none;
    position: relative;
    padding: 5px 0;
}

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

.nav-link:hover::after { width: 100%; }
.nav-link:hover { color: var(--primary-blue); }

.nav-right { display: flex; align-items: center; gap: 20px; }

/* Desktop Button */
.header-btn {
    background: linear-gradient(135deg, #0056b3 0%, #004494 100%);
    color: white;
    padding: 10px 24px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    box-shadow: 0 4px 10px rgba(0, 86, 179, 0.2);
    transition: transform 0.2s, box-shadow 0.2s;
}

.header-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 86, 179, 0.3);
}

.mobile-cta-btn, .hamburger { display: none; }

/* =========================================
   3. HERO SECTION
   ========================================= */
.hero-section {
    background: url('upload/banner.png'); /* Ensure image path is correct */
    padding: 60px 0;
    position: relative;
    overflow: hidden;
    background-position: center;
    background-size: cover;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.hero-text { flex: 1; }

.hero-text h1 {
    font-size: 3rem;
    color: var(--primary-blue);
    line-height: 1.2;
    margin-bottom: 15px;
}

.hero-text .highlight-text { color: #003d80; }

.sub-heading {
    font-size: 1.2rem;
    font-weight: 600;
    color: #444;
    margin-bottom: 15px;
}

.description {
    color: #666;
    margin-bottom: 30px;
    font-size: 1rem;
    line-height: 1.6;
}

.cta-button {
    display: inline-block;
    background-color: var(--cta-yellow);
    color: #000;
    padding: 15px 35px;
    font-weight: 700;
    text-decoration: none;
    border-radius: 5px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.2s;
    font-size: 1.1rem;
}

.cta-button:hover {
    transform: translateY(-2px);
    background-color: #ffca2c;
}

.trust-markers {
    margin-top: 30px;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.trust-markers span {
    font-size: 0.9rem;
    color: #555;
    background: rgba(255,255,255,0.6);
    padding: 5px 10px;
    border-radius: 4px;
}

.trust-markers i {
    color: var(--primary-blue);
    margin-right: 5px;
}

/* Hero Form (Right Side) */
.hero-image { flex: 1; position: relative; }

.hero-form-card {
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    max-width: 400px;
    margin-left: auto;
    border: 1px solid #e1e1e1;
}

.form-header {
    background-color: #0e4c8a;
    color: #fff;
    padding: 15px;
    text-align: center;
}

.form-header h3 { margin: 0; font-size: 1.1rem; font-weight: 700; }
.form-body { padding: 20px; }
.input-group { margin-bottom: 15px; }

.input-group label {
    display: block; font-size: 0.9rem; color: #444; margin-bottom: 5px; font-weight: 500;
}

.input-group input, .input-group select {
    width: 100%; padding: 10px;
    border: 1px solid #ccc; border-radius: 6px;
    font-size: 0.95rem; background-color: #fdfdfd; outline: none;
}

.orange-submit-btn {
    width: 100%; background: #f37021; color: #fff;
    border: none; padding: 12px; font-size: 1.1rem; font-weight: bold;
    border-radius: 6px; cursor: pointer; margin-top: 10px; transition: background 0.3s;
}

.orange-submit-btn:hover { background: #d35400; }

.form-footer { margin-top: 15px; text-align: center; border-top: 1px solid #eee; padding-top: 10px; }
.location-text { font-size: 0.8rem; color: #27ae60; font-weight: 600; margin-bottom: 3px; }
.trust-text { font-size: 0.75rem; color: #888; }

/* =========================================
   4. FEATURES SECTION
   ========================================= */
.features-section {
    padding: 60px 0;
    text-align: center;
    background: #fff;
}

.section-title {
    font-size: 2rem;
    color: var(--primary-blue);
    margin-bottom: 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.feature-card {
    background: #f8faff;
    padding: 20px;
    border-radius: 10px;
    transition: 0.3s;
}

.feature-card:hover { box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
.icon-box { font-size: 2rem; color: var(--primary-blue); margin-bottom: 15px; }
.feature-card h3 { font-size: 1.1rem; margin-bottom: 10px; color: #333; }
.feature-card p { font-size: 0.9rem; color: #666; }

/* =========================================
   5. COMPARISON SECTION
   ========================================= */
.comparison-section {
    padding: 60px 0;
    background: #f4f9fd;
}

.comparison-container-box {
    background: #fff;
    border-radius: 25px;
    box-shadow: 0 15px 40px rgba(0, 86, 179, 0.1);
    overflow: hidden;
    padding: 30px;
}

.comparison-grid { display: flex; justify-content: space-between; gap: 20px; }
.comparison-column { flex: 1; }
.column-title { text-align: center; margin-bottom: 25px; color: var(--primary-blue); font-size: 1.3rem; }

.separator-line {
    width: 2px;
    background: linear-gradient(to bottom, transparent, #ddd, transparent);
    margin: 0 10px;
}

.comparison-item {
    display: flex; align-items: center;
    background: #f8faff; padding: 15px;
    border-radius: 15px; margin-bottom: 20px;
    transition: transform 0.2s;
}

.comparison-item:hover { transform: translateY(-3px); box-shadow: 0 5px 15px rgba(0,0,0,0.05); }

.item-image {
    width: 100px; height: 100px; object-fit: cover;
    border-radius: 12px; margin-right: 20px; border: 2px solid #eee;
}

.item-content { flex: 1; }
.icon-title { display: flex; align-items: center; margin-bottom: 8px; }
.icon-title h4 { font-size: 1.1rem; color: #333; margin-left: 10px; }
.icon-dirty { color: #a0a0a0; font-size: 1.2rem; }
.icon-clean { color: var(--primary-blue); font-size: 1.2rem; }
.item-content p { font-size: 0.9rem; color: #666; line-height: 1.4; }

/* =========================================
   6. PROCESS TIMELINE SECTION
   ========================================= */
.process-timeline-section {
    background: linear-gradient(to bottom, #f4f9fd, #eaf6ff);
    padding: 60px 0;
}

.timeline-box {
    background: url('upload/bgbanner.png'); /* Ensure path is correct */
    border-radius: 20px;
    padding: 20px 30px;
    box-shadow: 0 10px 30px rgba(0, 86, 179, 0.08);
    display: flex; align-items: center; justify-content: space-between;
    border: 1px solid #e1eeff; position: relative; overflow: hidden;
}

.timeline-steps { display: flex; align-items: center; flex: 2; justify-content: space-around; }
.step-item { display: flex; align-items: center; gap: 15px; }
.step-icon { font-size: 2rem; color: var(--primary-blue); }
.step-text h4 { font-size: 0.95rem; font-weight: 700; color: #333; margin-bottom: 2px; text-transform: uppercase; }
.step-text p { font-size: 0.85rem; color: #666; }
.step-arrow { color: #0854d1; font-size: 1.5rem; }
.timeline-image { flex: 0; display: flex; justify-content: flex-end; }
.timeline-image img { height: 100px; border-radius: 10px; object-fit: cover; margin-left: 20px; }

/* =========================================
   7. WHY CHOOSE SECTION
   ========================================= */
.why-choose-section {
    padding: 60px 0;
    background: #eef7ff;
    text-align: center;
}

.section-subtitle { color: #555; margin-top: -30px; margin-bottom: 40px; font-size: 1.1rem; }
.benefits-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }

.benefit-card {
    background: #fff; padding: 25px; border-radius: 15px;
    display: flex; align-items: center; text-align: left;
    gap: 20px; box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    border: 1px solid #f0f0f0; transition: transform 0.3s;
}

.benefit-card:hover { transform: translateY(-5px); border-color: var(--primary-blue); }

.benefit-icon-wrapper {
    width: 60px; height: 60px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; flex-shrink: 0;
}

.blue-circle { background-color: #e3f2fd; color: var(--primary-blue); }
.outline-circle { border: 2px solid var(--primary-blue); color: var(--primary-blue); background: #fff; }
.gold-badge { background: linear-gradient(135deg, #fffbf0, #fff); border: 2px solid #ffc107; color: #d4a017; }

.benefit-content h3 { font-size: 1.1rem; color: var(--primary-blue); margin-bottom: 5px; }
.benefit-content p { font-size: 0.9rem; color: #666; line-height: 1.4; }

/* =========================================
   8. SMART PRODUCT SELECTION (Slider Logic Included)
   ========================================= */
.smart-selection-section {
    padding: 80px 0;
    background-color: #fff;
    text-align: center;
}

.smart-header h2 { font-size: 2.2rem; color: #002b5c; font-weight: 700; margin-bottom: 10px; }
.smart-header p { color: #666; font-size: 1.1rem; margin-bottom: 40px; }

.slider-wrapper { position: relative; padding: 0 10px; }
.slider-btn { display: none; } /* Hidden on desktop */

.smart-grid {
    display: flex; justify-content: center; gap: 40px; flex-wrap: wrap;
}

.smart-card {
    background: #fff; width: 100%; max-width: 480px;
    border-radius: 20px; position: relative; overflow: hidden;
    box-shadow: 0 15px 40px rgba(0, 50, 100, 0.1);
    border: 1px solid #f0f0f0; transition: transform 0.3s ease;
    display: flex; flex-direction: column; justify-content: space-between;
}

.smart-card:hover { transform: translateY(-10px); box-shadow: 0 20px 50px rgba(0, 50, 100, 0.15); }

.water-wave-bg {
    position: absolute; bottom: 0; left: 0;
    width: 100%; height: 35%;
    background: linear-gradient(to top, #cceeff 0%, rgba(255, 255, 255, 0) 100%);
    z-index: 0; border-bottom-left-radius: 20px; border-bottom-right-radius: 20px;
}

.card-upper { padding: 30px 30px 10px 30px; z-index: 1; }
.card-upper h3 { font-size: 1.6rem; color: #002b5c; font-weight: 700; margin-bottom: 5px; }
.badge-blue { background: #e3f2fd; color: #0056b3; padding: 5px 15px; border-radius: 20px; font-weight: 600; font-size: 0.9rem; display: inline-block; }

.product-visual {
    height: 220px; display: flex; align-items: center; justify-content: center;
    position: relative; z-index: 1; margin: 10px 0;
}
.product-visual img { max-height: 100%; max-width: 80%; object-fit: contain; filter: drop-shadow(0 10px 15px rgba(0,0,0,0.15)); }

.card-details { padding: 0 30px 40px 30px; position: relative; z-index: 1; }
.smart-features { list-style: none; text-align: left; margin-bottom: 25px; display: inline-block; }
.smart-features li { font-size: 1rem; color: #333; margin-bottom: 10px; font-weight: 500; }
.smart-features i { color: #0056b3; margin-right: 10px; }

.smart-btn {
    display: block; width: 100%; background-color: #ffc107; color: #000;
    font-weight: 700; padding: 16px; border-radius: 50px; text-decoration: none;
    font-size: 1.1rem; box-shadow: 0 5px 15px rgba(255, 193, 7, 0.4);
    transition: all 0.3s ease;
}
.smart-btn:hover { background-color: #ffca2c; transform: scale(1.02); }

/* =========================================
   9. HARD WATER SECTION (Slider Logic Included)
   ========================================= */
.hard-water-section {
    padding: 70px 0;
    background-color: #ffffff;
    text-align: center;
}

.problems-grid {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 25px; margin-bottom: 50px;
}

.problem-card {
    text-align: center; transition: transform 0.3s ease;
    background: #fff;
}
.problem-card:hover { transform: translateY(-5px); }

.problem-img {
    width: 100%; height: 180px; border-radius: 15px;
    overflow: hidden; margin-bottom: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}
.problem-img img { width: 100%; height: 100%; object-fit: cover; }

.problem-card h3 { font-size: 1.1rem; color: #333; font-weight: 700; margin-bottom: 8px; }
.problem-card p { font-size: 0.85rem; color: #666; line-height: 1.4; padding: 0 5px; }

.hard-water-action {
    position: relative; display: flex; align-items: center; justify-content: center;
    gap: 20px; margin-top: 40px; border-top: 1px solid #f0f8ff; padding-top: 30px;
}

.cta-button-blue {
    background: linear-gradient(180deg, #007bff 0%, #0056b3 100%);
    color: #fff; padding: 16px 40px; font-size: 1.1rem; font-weight: 600;
    text-decoration: none; border-radius: 5px;
    box-shadow: 0 4px 15px rgba(0, 86, 179, 0.3); transition: all 0.3s ease; z-index: 2;
}
.cta-button-blue:hover { transform: scale(1.05); box-shadow: 0 6px 20px rgba(0, 86, 179, 0.4); }

.wave-decoration { display: flex; align-items: center; color: #a0c4ff; font-weight: 500; }
.small-text { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 1px; }

/* =========================================
   10. VIDEO TESTIMONIALS SECTION (Slider Logic Included)
   ========================================= */
.trusted-section {
    padding: 60px 0;
    background-color: #f8fbff;
}

.section-header-left {
    text-align: left; margin-bottom: 30px;
    border-bottom: 2px solid #e1e1e1; padding-bottom: 15px;
}

.testimonials-grid {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 20px; margin-top: 20px;
}

.video-card-simple {
    position: relative; border-radius: 20px; overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1); background: #000;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.video-card-simple:hover { transform: translateY(-5px); box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2); }

.video-wrapper { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; }
.video-wrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; }

.simple-info {
    position: absolute; bottom: 0; left: 0; width: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
    padding: 15px 15px 10px 15px; pointer-events: none;
}
.simple-info h5 {
    color: #fff; font-size: 0.95rem; font-weight: 600; margin: 0;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5); letter-spacing: 0.5px;
}

/* =========================================
   11. CUSTOMER REVIEWS SECTION (Slider Logic Included)
   ========================================= */
.reviews-section {
    padding: 70px 0;
    background-color: #ffffff;
    text-align: center;
}

.reviews-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 30px; margin-top: 40px;
}

.review-card {
    background: #fff; border-radius: 15px; overflow: hidden;
    box-shadow: 0 10px 25px rgba(0,0,0,0.08); transition: transform 0.3s ease;
    border: 1px solid #f0f0f0; text-align: left;
}
.review-card:hover { transform: translateY(-8px); box-shadow: 0 15px 35px rgba(0,0,0,0.12); }

.review-img { width: 100%; height: 200px; overflow: hidden; }
.review-img img { width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform 0.5s; }
.review-card:hover .review-img img { transform: scale(1.05); }

.review-content { padding: 25px; }
.reviewer-name { font-size: 1.2rem; font-weight: 700; color: #333; margin-bottom: 5px; }
.stars { color: #ffc107; font-size: 0.9rem; margin-bottom: 15px; }
.review-text { font-size: 0.95rem; color: #666; line-height: 1.6; font-style: italic; }

/* =========================================
   12. FAQ & FOOTER SECTIONS
   ========================================= */
.faq-section { padding: 60px 0; background-color: #f0f6ff; text-align: center; }
.faq-container {
    background: #fff; max-width: 800px; margin: 0 auto 50px auto;
    border-radius: 15px; box-shadow: 0 10px 30px rgba(0, 86, 179, 0.08);
    overflow: hidden; text-align: left;
}
.faq-item { border-bottom: 1px solid #eee; }
.faq-item:last-child { border-bottom: none; }
.faq-item summary {
    padding: 20px 25px; cursor: pointer; font-weight: 500; color: #333;
    font-size: 1.05rem; list-style: none; display: flex;
    justify-content: space-between; align-items: center; background: #fff;
    transition: background 0.2s;
}
.faq-item summary:hover { background: #f9fcff; }
.faq-item[open] summary { color: var(--primary-blue); font-weight: 600; }
.faq-answer { padding: 0 25px 20px 25px; color: #666; font-size: 0.95rem; line-height: 1.5; background: #fff; }

/* Support Icons */
.support-features-grid { display: flex; justify-content: center; gap: 40px; margin-bottom: 50px; flex-wrap: wrap; }
.support-feature { text-align: center; width: 120px; }
.s-icon { font-size: 2.5rem; margin-bottom: 15px; height: 60px; display: flex; align-items: center; justify-content: center; position: relative;}
.support-feature h4 { font-size: 0.9rem; color: #444; line-height: 1.3; }
.blue-shield { color: var(--primary-blue); }
.green-shield { color: #28a745; }
.blue-tools { color: #5dade2; transform: rotate(-10deg); }
.emi-box span { background: var(--primary-blue); color: #fff; padding: 5px 10px; border-radius: 5px; font-size: 1.2rem; font-weight: bold; }

/* Contact Bar */
.contact-bar {
    display: block; background: #2c5282; max-width: 900px; margin: 0 auto;
    padding: 20px; border-radius: 12px; color: #fff; text-decoration: none;
    box-shadow: 0 10px 25px rgba(44, 82, 130, 0.4); transition: transform 0.2s;
}
.contact-bar:hover { transform: translateY(-3px); background: #23426b; }
.contact-content { display: flex; align-items: center; justify-content: center; gap: 15px; font-size: 1.2rem; }
.phone-number { font-weight: 700; letter-spacing: 1px; }

/* Footer */
.site-footer { background-color: #1a1a1a; color: #fff; padding-top: 60px; }
.footer-top { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid #333; }
.footer-col { flex: 1; min-width: 250px; }
.footer-logo { font-size: 1.8rem; margin-bottom: 15px; color: #fff; }
.footer-col p { color: #bbb; font-size: 0.9rem; line-height: 1.6; margin-bottom: 20px; }
.social-icons a { display: inline-flex; align-items: center; justify-content: center; width: 35px; height: 35px; background: #333; color: #fff; border-radius: 50%; margin-right: 10px; text-decoration: none; transition: background 0.3s; }
.social-icons a:hover { background: var(--primary-blue); }
.footer-col ul li { margin-bottom: 12px; list-style: none; }
.footer-col ul li a { color: #bbb; text-decoration: none; }
.footer-bottom { padding: 20px 0; text-align: center; font-size: 0.85rem; color: #777; display: flex; justify-content: space-between; flex-wrap: wrap; }

/* =========================================
   13. GLOBAL MOBILE RESPONSIVENESS (Max 768px)
   ========================================= */
@media (max-width: 768px) {
    
    /* 1. SECTION SPACING (30px Max) */
    .hero-section,
    .features-section,
    .comparison-section,
    .process-timeline-section,
    .why-choose-section,
    .smart-selection-section,
    .hard-water-section,
    .trusted-section,
    .reviews-section,
    .faq-section,
    .final-cta-section {
        padding: 30px 0 !important; /* Forces 30px padding on all mobile sections */
    }

    /* 2. HEADER & MENU */
    .logo img { height: 40px; }
    .top-bar, .desktop-cta-btn { display: none; }
    .hamburger { display: block; font-size: 26px; cursor: pointer; color: var(--primary-blue); padding: 5px; }
    
    .nav-menu {
        display: block; position: absolute; top: 70px; left: 0; width: 100%;
        background: #fff; flex-direction: column; padding: 20px 0;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        opacity: 0; visibility: hidden; transform: translateY(-20px);
        transition: all 0.3s ease-in-out; z-index: 999;
    }
    .nav-menu.active { opacity: 1; visibility: visible; transform: translateY(0); }
    .nav-link { display: block; padding: 12px 20px; border-bottom: 1px solid #f0f0f0; font-size: 16px; color: #444; }
    .nav-link:hover { background-color: #f9fcff; color: var(--primary-blue); padding-left: 25px; }
    .nav-link::after { display: none; }
    .mobile-cta-btn {
        display: block; background-color: var(--cta-yellow); color: #000;
        text-align: center; margin: 20px 20px 0 20px; padding: 12px;
        border-radius: 8px; font-weight: bold; text-decoration: none;
    }

    /* 3. HERO ADJUSTMENTS */
    .hero-container { flex-direction: column; text-align: center; }
    .hero-text h1 { font-size: 2rem; }
    .trust-markers { justify-content: center; }
    .hero-form-card { margin: 0 auto; width: 100%; }

    /* 4. COMPARISON */
    .comparison-grid { flex-direction: column; }
    .separator-line { width: 100%; height: 2px; margin: 20px 0; background: linear-gradient(to right, transparent, #ddd, transparent); }
    .comparison-item { flex-direction: column; text-align: center; }
    .item-image { margin-right: 0; margin-bottom: 15px; }
    .icon-title { justify-content: center; }

    /* 5. TIMELINE & BENEFITS */
    .timeline-box { flex-direction: column; padding: 20px; }
    .timeline-steps { flex-direction: column; width: 100%; align-items: flex-start; gap: 20px; }
    .step-arrow, .timeline-image { display: none; }
    .benefits-grid { grid-template-columns: 1fr; }

    /* 6. SLIDERS LOGIC (Product, Hard Water, Videos, Reviews) */
    .slider-wrapper { padding: 0; }
    .slider-btn {
        display: flex; align-items: center; justify-content: center;
        position: absolute; top: 50%; transform: translateY(-50%);
        width: 45px; height: 45px; background-color: rgba(255, 255, 255, 0.9);
        color: #0056b3; border-radius: 50%; box-shadow: 0 4px 10px rgba(0,0,0,0.2);
        z-index: 10; cursor: pointer; border: none; font-size: 1.2rem;
    }
    .prev-btn { left: 10px; }
    .next-btn { right: 10px; }

    /* Common Slider Container Styles */
    .smart-grid, .problems-grid, .testimonials-grid, .reviews-grid {
        display: flex !important; 
        flex-direction: row !important;
        flex-wrap: nowrap !important;
        overflow-x: auto;
        scroll-behavior: smooth;
        gap: 0;
        justify-content: flex-start;
        padding-bottom: 20px;
        scroll-snap-type: x mandatory;
        scrollbar-width: none; -ms-overflow-style: none;
    }
    
    .smart-grid::-webkit-scrollbar, .problems-grid::-webkit-scrollbar,
    .testimonials-grid::-webkit-scrollbar, .reviews-grid::-webkit-scrollbar { display: none; }

    /* Items Full Width for Slider */
    .smart-card, .problem-card, .video-card-simple, .review-card {
        min-width: 100%;
        flex: 0 0 100%;
        scroll-snap-align: center;
        margin: 0;
        padding: 0 10px; /* Internal gap handling */
        border-radius: 20px; /* Ensure rounded look */
    }
    
    /* Specific overrides for Video */
    .video-card-simple {
        background: transparent; box-shadow: none;
    }
    .video-card-simple .video-wrapper {
        border-radius: 20px; box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1); overflow: hidden;
    }

    /* Specific overrides for Reviews/Problems */
    .problem-img { height: 220px; width: 100%; }
    .review-img { height: 180px; }
    .review-card {
        border-left: 10px solid transparent; 
        border-right: 10px solid transparent;
        background-clip: padding-box;
    }

    /* 7. OTHER MOBILE FIXES */
    .hard-water-action { flex-direction: column; }
    .wave-decoration, .divider-line { display: none; }
    .section-header-left { text-align: center; }
    .cta-layout, .footer-top, .footer-bottom, .contact-content { flex-direction: column; text-align: center; }
    .footer-bottom { gap: 10px; justify-content: center; }
    .cta-features li { justify-content: center; }
    .contact-content { gap: 5px; }
}