:root {
    --primary-color: #2563eb;
    --secondary-color: #0ea5e9;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --background-color: #0f172a;
    --surface-color: #1e293b;
    --card-color: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #475569;
    --gradient-primary: linear-gradient(135deg, #2563eb, #0ea5e9);
    --gradient-success: linear-gradient(135deg, #10b981, #059669);
    --gradient-danger: linear-gradient(135deg, #ef4444, #dc2626);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.25);
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
    --container-padding: 2rem;
    --header-height: 80px;
}

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

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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* HEADER STYLES */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
    height: var(--header-height);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--container-padding);
    max-width: var(--max-width);
    margin: 0 auto;
    height: 100%;
}

.logo {
    font-family: 'Poppins', sans-serif;
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 1003;
}

/* .logo-image {
    width: 40px;
    height: 40px;
    object-fit: contain;
} */

/* .logo-fallback {
    font-size: 2rem;
    -webkit-text-fill-color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 1003;
}

.nav-icon {
    color: var(--text-secondary);
    transition: var(--transition);
    padding: 0.5rem;
    border-radius: 8px;
    text-decoration: none;
}

.nav-icon:hover {
    color: var(--text-primary);
    background-color: var(--surface-color);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1003;
    position: relative;
    background: none;
    border: none;
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    border-radius: 2px;
    transition: var(--transition); 
} */


.logo-image {
    width: 150px;
    height: 200px;
    object-fit: contain;
}


.logo-fallback {
    font-size: 2rem;
    -webkit-text-fill-color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-icon {
    color: var(--text-secondary);
    transition: var(--transition);
    padding: 0.5rem;
    border-radius: 8px;
}

.nav-icon:hover {
    color: var(--text-primary);
    background-color: var(--surface-color);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* PAGE HEADER */
.page-header {
    padding: calc(var(--header-height) + 3rem) 0 3rem 0;
    background: var(--background-color);
    text-align: center;
    position: relative;
}

.page-header-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 30%, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
    z-index: -1;
}

.page-title {
    font-family: 'Poppins', sans-serif;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem auto;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--secondary-color);
    text-decoration: none;
}

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

/* VERIFICATION SEARCH */
.verification-search {
    padding: 2.5rem 0;
    background: var(--surface-color);
}

.search-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.search-title {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.search-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.search-form {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.search-input {
    flex: 1;
    padding: 1rem 1.5rem;
    background: var(--card-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 1.1rem;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-btn {
    background: var(--gradient-primary);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.search-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger-color);
    color: var(--danger-color);
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-top: 1rem;
    text-align: center;
    display: none;
}

/* BATTERY RESULTS - DASHBOARD STYLE */
.battery-results {
    padding: 3rem 0;
    background: var(--background-color);
    display: none;
    min-height: 100vh;
}

.results-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.results-header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--surface-color);
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.results-title {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.results-grid {
    display: block;
    width: 100%;
}

/* MAIN BATTERY CARD */
.battery-info-card {
    background: var(--surface-color);
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    margin-bottom: 3rem;
    overflow: hidden;
}

/* BATTERY HEADER - HERO SECTION */
.battery-card-header {
    padding: 3rem 2rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(14, 165, 233, 0.05) 100%);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.battery-card-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
}

.battery-model {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.battery-serial {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 800;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
}

.warranty-status {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 800;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: var(--shadow-md);
}

.warranty-status.valid {
    background: var(--gradient-success);
    color: white;
}

.warranty-status.expired {
    background: var(--gradient-danger);
    color: white;
}

/* DASHBOARD WIDGET GRID - LIKE THE IMAGE */
.battery-sections {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    padding: 2rem;
}

/* DASHBOARD WIDGETS - EXACTLY LIKE THE IMAGE */
.info-section {
    background: var(--card-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.info-section:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.info-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
}

.section-title {
    font-family: 'Poppins', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

/* WIDGET ITEMS - CLEAN LAYOUT LIKE DASHBOARD */
.widget-grid {
    display: grid;
    gap: 1rem;
}

.widget-item {
    background: rgba(37, 99, 235, 0.05);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid rgba(37, 99, 235, 0.1);
    transition: var(--transition);
    position: relative;
}

.widget-item:hover {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
    transform: scale(1.02);
}

.widget-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
    display: block;
}

.widget-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    display: block;
}

/* COMPATIBILITY WITH EXISTING HTML */
.info-row {
    background: rgba(37, 99, 235, 0.05);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid rgba(37, 99, 235, 0.1);
    transition: var(--transition);
    margin-bottom: 1rem;
    position: relative;
}

.info-row:hover {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
    transform: scale(1.02);
}

.info-row:last-child {
    margin-bottom: 0;
}

.info-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
    display: block;
}

.info-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    display: block;
}

/* QR CODE SECTION - CENTERED BELOW */
.qr-section {
    max-width: 400px;
    margin: 0 auto;
    background: var(--surface-color);
    border-radius: var(--border-radius-xl);
    padding: 2.5rem 2rem;
    border: 1px solid var(--border-color);
    text-align: center;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.qr-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, var(--accent-color), #f97316);
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
}

.qr-title {
    font-family: 'Poppins', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.qr-code {
    margin: 2rem 0;
    display: flex;
    justify-content: center;
    padding: 1.5rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.qr-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ACTION BUTTONS */
.action-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin: 2.5rem 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.btn-download,
.btn-print {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    min-width: 160px;
    justify-content: center;
}

.btn-download {
    background: var(--gradient-primary);
    color: white;
    border: none;
    box-shadow: var(--shadow-sm);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-print {
    background: transparent;
    color: var(--secondary-color);
    border: 2px solid var(--secondary-color);
}

.btn-print:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* FOOTER */
.main-footer {
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1.5rem 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section p,
.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    line-height: 1.6;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    text-align: center;
    color: var(--text-muted);
}

/* RESPONSIVE DESIGN */
@media (max-width: 1024px) {
    .battery-sections {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.25rem;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --header-height: 70px;
    }
    
    .nav-menu {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: var(--background-color);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        z-index: 1001;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .nav-menu.active {
        display: flex;
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-actions .nav-icon {
        display: none;
    }
    
    .page-header {
        padding: calc(var(--header-height) + 2rem) 0 2rem 0;
    }
    
    .search-form {
        flex-direction: column;
    }
    
    .battery-sections {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 1.5rem 1rem;
    }
    
    .qr-section {
        margin: 2rem 0;
        padding: 2rem 1.5rem;
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        margin: 2rem 1rem;
    }
    
    .btn-download,
    .btn-print {
        width: 100%;
        max-width: 250px;
    }
    
    .battery-model {
        font-size: 2rem;
    }
    
    .results-title {
        font-size: 2rem;
    }
    
    body.menu-open {
        overflow: hidden;
    }
}

@media (max-width: 480px) {
    .battery-card-header {
        padding: 2rem 1.5rem;
    }
    
    .battery-sections {
        padding: 1.5rem 1rem;
    }
    
    .info-section {
        padding: 1.5rem;
    }
}

/* ANIMATIONS */
@keyframes spin {
    from { 
        transform: rotate(0deg); 
    }
    to { 
        transform: rotate(360deg); 
    }
}

.loading {
    animation: spin 1s linear infinite;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.battery-info-card {
    animation: slideInUp 0.6s ease-out;
}

.qr-section {
    animation: slideInUp 0.8s ease-out 0.2s both;
}

.info-section {
    animation: slideInUp 0.6s ease-out;
}

.info-section:nth-child(1) {
    animation-delay: 0s;
}

.info-section:nth-child(2) {
    animation-delay: 0.1s;
}

.info-section:nth-child(3) {
    animation-delay: 0.2s;
}



/* ================ UPDATED CSS =================*/


/* CSS VARIABLES - DESIGN SYSTEM */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #0ea5e9;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --background-color: #0f172a;
    --surface-color: #1e293b;
    --card-color: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #475569;
    --gradient-primary: linear-gradient(135deg, #2563eb, #0ea5e9);
    --gradient-secondary: linear-gradient(135deg, #0ea5e9, #06b6d4);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1400px;
    --container-padding: 2rem;
    --section-padding: 4rem 0;
    --header-height: 80px;
}

/* GLOBAL RESET & BASE STYLES */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* HEADER & NAVIGATION - FIXED FOR MOBILE */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
    height: var(--header-height);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--container-padding);
    max-width: var(--max-width);
    margin: 0 auto;
    height: 100%;
}

.logo {
    font-family: 'Poppins', sans-serif;
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 1003;
}

/* .logo-image {
    width: 100px;
    height: 150px;
    object-fit: contain;
} */

.logo-image {
    width: 150px;
    height: 200px;
    object-fit: contain;
}

.logo-fallback {
    font-size: 2rem;
    -webkit-text-fill-color: var(--primary-color);
}

/* DESKTOP NAVIGATION */
.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 1003;
}

.nav-icon {
    color: var(--text-secondary);
    transition: var(--transition);
    padding: 0.5rem;
    border-radius: 8px;
    text-decoration: none;
}

.nav-icon:hover {
    color: var(--text-primary);
    background-color: var(--surface-color);
}

/* MOBILE MENU TOGGLE - FIXED */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1003;
    position: relative;
    background: none;
    border: none;
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* HERO SECTION - FIXED PADDING FOR MOBILE */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: var(--background-color);
    overflow: hidden;
    padding: calc(var(--header-height) + 2rem) 0 4rem 0;
    margin-top: 0;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 20%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(14, 165, 233, 0.1) 0%, transparent 50%);
    z-index: -1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    text-align: center;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
}

.hero-title {
    font-family: 'Poppins', sans-serif;
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.5;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 2rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    padding: 1rem 2rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
}

/* PRODUCT SHOWCASE WITH AUTO SCROLL */
.product-showcase {
    padding: var(--section-padding);
    background: var(--background-color);
    position: relative;
    overflow: hidden;
}

.showcase-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-badge {
    display: inline-block;
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-color);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-family: 'Poppins', sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.products-scroll-container {
    position: relative;
    margin: 2rem 0;
}

.products-wrapper {
    overflow: hidden;
    padding: 1rem 0;
    position: relative;
}

.products-grid {
    display: flex;
    gap: 2rem;
    width: max-content;
    animation: autoScroll 40s linear infinite;
}

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

.products-grid:hover {
    animation-play-state: paused;
}

.product-card {
    width: 320px;
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    flex-shrink: 0;
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.product-image {
    height: 200px;
    background: var(--gradient-secondary);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.battery-image {
    width: 80%;
    height: 80%;
    object-fit: contain;
}

.battery-fallback {
    font-size: 4rem;
    color: white;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--accent-color);
    color: var(--background-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.product-info {
    padding: 1.5rem;
}

.product-category {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.product-name {
    font-family: 'Poppins', sans-serif;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.product-features {
    margin-bottom: 1.5rem;
}

.product-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.product-pricing {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.product-price {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
}

.product-original-price {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-left: 0.5rem;
}

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

.btn-add-cart {
    flex: 1;
    background: var(--gradient-primary);
    color: white;
    padding: 0.875rem 1rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-add-cart:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-wishlist {
    background: transparent;
    color: var(--text-secondary);
    padding: 0.875rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.btn-wishlist:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
}

/* SCROLL CONTROLS */
.scroll-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.scroll-btn {
    background: var(--surface-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
}

.scroll-btn:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.scroll-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* CALL TO ACTION AFTER PRODUCTS */
.product-cta {
    text-align: center;
    margin-top: 3rem;
}

/* FEATURES SECTION */
.features-section {
    padding: var(--section-padding);
    background: var(--surface-color);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 2rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.feature-card {
    background: var(--card-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.feature-card:hover::before {
    opacity: 0.05;
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    color: white;
    font-size: 1.3rem;
}

.feature-title {
    font-family: 'Poppins', sans-serif;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.5;
    font-size: 0.95rem;
}

/* STATS SECTION */
.stats-section {
    padding: var(--section-padding);
    background: var(--background-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 1.5rem;
}

.stat-number {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* CTA SECTION */
.cta-section {
    padding: var(--section-padding);
    background: var(--surface-color);
    text-align: center;
    position: relative;
}

.cta-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.05;
    z-index: -1;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-family: 'Poppins', sans-serif;
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* FOOTER */
.main-footer {
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1.5rem 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section p,
.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    line-height: 1.6;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    text-align: center;
    color: var(--text-muted);
}

/* MOBILE RESPONSIVE DESIGN - FIXED */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --section-padding: 3rem 0;
        --header-height: 70px;
    }
    
    /* MOBILE NAVIGATION MENU - FIXED */
    .nav-menu {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: var(--background-color);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        z-index: 1001;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .nav-menu.active {
        display: flex;
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu li {
        opacity: 0;
        transform: translateY(20px);
        animation: fadeInUp 0.5s ease forwards;
    }
    
    .nav-menu.active li:nth-child(1) { animation-delay: 0.1s; }
    .nav-menu.active li:nth-child(2) { animation-delay: 0.2s; }
    .nav-menu.active li:nth-child(3) { animation-delay: 0.3s; }
    .nav-menu.active li:nth-child(4) { animation-delay: 0.4s; }
    .nav-menu.active li:nth-child(5) { animation-delay: 0.5s; }
    .nav-menu.active li:nth-child(6) { animation-delay: 0.6s; }
    .nav-menu.active li:nth-child(7) { animation-delay: 0.7s; }
    
    @keyframes fadeInUp {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .nav-link {
        font-size: 1.2rem;
        padding: 1rem 2rem;
        border-radius: var(--border-radius);
        transition: var(--transition);
    }
    
    .nav-link:hover {
        background: var(--surface-color);
    }
    
    /* SHOW MOBILE MENU TOGGLE */
    .mobile-menu-toggle {
        display: flex;
    }
    
    /* HIDE DESKTOP ACTIONS ON MOBILE */
    .nav-actions .nav-icon {
        display: none;
    }
    
    /* HERO SECTION MOBILE FIXES */
    .hero-section {
        min-height: 80vh;
        padding: calc(var(--header-height) + 2rem) 0 3rem 0;
    }
    
    .hero-badge {
        font-size: 0.75rem;
        padding: 0.4rem 0.8rem;
        text-align: center;
        display: block;
        max-width: 280px;
        margin: 0 auto 1.5rem auto;
    }
    
    .hero-title {
        font-size: clamp(1.8rem, 8vw, 2.5rem);
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
        line-height: 1.4;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
        max-width: 280px;
    }
    
    /* PRODUCT CARDS MOBILE */
    .product-card {
        width: 280px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    /* ENSURE NO BODY SCROLL WHEN MENU IS OPEN */
    body.menu-open {
        overflow: hidden;
    }
}

@media (max-width: 480px) {
    .product-card {
        width: 260px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-badge {
        font-size: 0.7rem;
        padding: 0.3rem 0.6rem;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    /* .logo-image {
        width: 35px;
        height: 35px;
    } */

    .logo-image {
    width: 150px;
    height: 200px;
    object-fit: contain;
}
    
}