:root {
    --color-primary: #27ae60;
    /* Energy Green */
    --color-primary-dark: #219150;
    --color-secondary: #2c3e50;
    /* Navy Tech */
    --color-bg: #ffffff;
    --color-bg-light: #f8f9fa;
    --color-text: #1a1a1a;
    --color-text-muted: #666666;
    --color-border: #e0e0e0;
    --color-white: #ffffff;

    --font-main: 'Plus Jakarta Sans', sans-serif;

    --transition-base: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --container-width: 1200px;
    --section-spacing: 100px;
    --section-spacing-mobile: 60px;
    --header-height: 80px;
}

/* Reset & Base */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-main);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

section {
    position: relative;
    overflow: hidden;
}

.section-padding {
    padding: var(--section-spacing) 0;
}

@media (max-width: 768px) {
    .section-padding {
        padding: var(--section-spacing-mobile) 0;
    }
}

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

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

/* Typography */
h1,
h2,
h3,
h4 {
    margin: 0;
    line-height: 1.2;
    color: var(--color-secondary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 24px;
}

h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    margin-bottom: 20px;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 12px;
}

p {
    margin: 0 0 16px 0;
}

p:last-child {
    margin-bottom: 0;
}

.section-title {
    margin-bottom: 60px;
}

/* Buttons */
.primary-btn,
.secondary-btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
    font-family: inherit;
    font-size: 1rem;
}

.primary-btn {
    background-color: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(39, 174, 96, 0.2);
}

.primary-btn:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(39, 174, 96, 0.3);
}

.secondary-btn {
    background-color: var(--color-white);
    color: var(--color-secondary);
    border: 1px solid var(--color-border);
}

.secondary-btn:hover {
    background-color: var(--color-bg-light);
    border-color: var(--color-secondary);
    transform: translateY(-2px);
}

.lg-btn {
    padding: 18px 40px;
    font-size: 1.125rem;
}

@media (max-width: 768px) {

    .primary-btn,
    .secondary-btn {
        padding: 10px 24px;
        font-size: 0.9rem;
    }

    .lg-btn {
        padding: 12px 28px;
        font-size: 1rem;
    }
}

.sm-btn {
    padding: 8px 20px;
    font-size: 0.875rem;
}

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

/* Ad Banner */
.ad-banner-top {
    background-color: #f1f1f1;
    color: #888;
    text-align: center;
    padding: 8px 15px;
    font-size: 11px;
    border-bottom: 1px solid var(--color-border);
}

/* Page Loader */
.page-loader {
    position: fixed;
    inset: 0;
    background-color: var(--color-white);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-logo {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-secondary);
    margin-bottom: 24px;
}

.loader-bar {
    width: 200px;
    height: 3px;
    background-color: #eee;
    margin: 0 auto 12px;
    border-radius: 3px;
    overflow: hidden;
}

.loader-progress {
    height: 100%;
    width: 0;
    background-color: var(--color-primary);
    animation: loadProgress 2s ease-in-out forwards;
}

.loader-status {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-text-muted);
}

@keyframes loadProgress {
    0% {
        width: 0;
    }

    50% {
        width: 70%;
    }

    100% {
        width: 100%;
    }
}

/* Header */
.site-header {
    height: var(--header-height);
    background-color: var(--color-white);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition-base);
}

.site-header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    height: 70px;
}

.header-container {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-secondary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.logo-accent {
    color: var(--color-primary);
}

.desktop-nav ul {
    display: flex;
    gap: 32px;
}

.desktop-nav a {
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background-color: var(--color-secondary);
    transition: var(--transition-base);
}

@media (max-width: 991px) {
    .desktop-nav {
        display: none;
    }

    .header-cta {
        display: none;
    }

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

/* Mobile Nav - Dark Premium Theme */
.mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 85%;
    max-width: 350px;
    height: 100%;
    background-color: var(--color-secondary);
    /* Deep Navy */
    color: var(--color-white);
    z-index: 2001;
    padding: 40px;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
}

.mobile-nav.active {
    transform: translateX(0);
}

.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 60px;
}

.mobile-nav .logo {
    color: var(--color-white);
    font-size: 1.4rem;
}

.close-btn {
    font-size: 2.2rem;
    line-height: 1;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-white);
    padding: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
}

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

.mobile-nav-links {
    margin-bottom: auto;
    list-style: none;
    padding: 0;
}

.mobile-nav-links li {
    margin-bottom: 30px;
    opacity: 0;
    transform: translateX(20px);
    transition: all 0.4s ease;
}

.mobile-nav.active li {
    opacity: 1;
    transform: translateX(0);
}

.mobile-nav.active li:nth-child(1) {
    transition-delay: 0.1s;
}

.mobile-nav.active li:nth-child(2) {
    transition-delay: 0.2s;
}

.mobile-nav.active li:nth-child(3) {
    transition-delay: 0.3s;
}

.mobile-nav.active li:nth-child(4) {
    transition-delay: 0.4s;
}

.mobile-nav-links a {
    text-decoration: none;
    color: var(--color-white);
    font-size: 1.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color 0.3s ease;
}

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

/* Hero */
.hero {
    background-color: #fdfdfd;
    padding: 120px 0 80px;
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-tag {
    display: inline-block;
    background-color: rgba(39, 174, 96, 0.1);
    color: var(--color-primary);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.hero-btns {
    display: flex;
    gap: 16px;
    margin-top: 40px;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
}

.floating {
    animation: floating 4s ease-in-out infinite;
}

@keyframes floating {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-15px);
    }
}

@media (max-width: 991px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        order: 1;
    }

    .hero-btns {
        justify-content: center;
    }

    .hero-image {
        order: 2;
        max-width: 500px;
        margin: 0 auto;
    }
}

/* Section Grid */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* About */
.image-wrapper {
    position: relative;
}

.image-wrapper img {
    width: 100%;
    border-radius: 20px;
}

/* Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--color-white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
    transition: var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 24px;
}

/* Testimonials */
.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background: var(--color-bg-light);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid var(--color-border);
}

.rating {
    color: #f1c40f;
    margin-bottom: 16px;
}

.customer-name {
    display: block;
    margin-top: 20px;
    font-weight: 700;
    color: var(--color-secondary);
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-white);
    border-radius: 12px;
    margin-bottom: 16px;
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    background: none;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-secondary);
    text-align: left;
    cursor: pointer;
}

.faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding-bottom: 24px;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-toggle {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

/* Footer */
.site-footer {
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: 80px 0 40px;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

@media (max-width: 768px) {
    .footer-top {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

.footer-brand .logo {
    color: var(--color-white);
    margin-bottom: 20px;
    display: block;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    max-width: 300px;
}

.footer-contact h3,
.footer-links h3 {
    font-size: 1.25rem;
    color: var(--color-white);
    margin-bottom: 24px;
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 8px;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 40px;
    text-align: center;
}

.ad-notice {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    max-width: 800px;
    margin: 0 auto 30px;
}

.legal-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 24px;
}

.legal-links button {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.legal-links button:hover {
    color: var(--color-primary);
}

.copyright,
.ad-disclosure {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.5);
}

/* Modals */
.modal {
    position: fixed;
    inset: 0;
    z-index: 5000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-container {
    position: relative;
    background: var(--color-white);
    width: 90%;
    max-width: 700px;
    max-height: 85vh;
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 2rem;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 10;
}

.modal-content {
    padding: 60px;
    overflow-y: auto;
}

.modal-content h2 {
    margin-bottom: 30px;
}

.modal-body h3 {
    margin-top: 30px;
    color: var(--color-secondary);
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 30px;
    left: 30px;
    right: 30px;
    background: var(--color-white);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    z-index: 4000;
    max-width: 500px;
    display: none;
}

.cookie-container {
    padding: 0;
}

.cookie-banner p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

.cookie-btns {
    display: flex;
    gap: 12px;
}