:root {
    --primary: #22c55e;
    --primary-dark: #16a34a;
    --secondary: #3b82f6;
    --secondary-dark: #2563eb;
    --dark: #0f172a;
    --light: #f8fafc;
    --text: #334155;
    --text-muted: #64748b;
    --white: #ffffff;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

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

h1, h2, h3, .logo {
    font-family: 'Outfit', sans-serif;
    color: var(--dark);
}

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

/* Header & Nav */
#main-header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

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

.cta-button {
    background: var(--primary);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(34, 197, 94, 0.2);
}

.cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(34, 197, 94, 0.3);
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
#hero {
    padding: 160px 0 100px;
    background: radial-gradient(circle at top right, rgba(34, 197, 94, 0.05), transparent),
                radial-gradient(circle at bottom left, rgba(59, 130, 246, 0.05), transparent);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-content h1 span {
    color: var(--primary);
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 540px;
}

.badge {
    display: inline-block;
    background: rgba(34, 197, 94, 0.1);
    color: var(--primary-dark);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.hero-btns {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 10px 15px -3px rgba(34, 197, 94, 0.3);
}

.btn-secondary {
    background: var(--white);
    color: var(--dark);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.btn:hover {
    transform: translateY(-3px);
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform 0.5s ease;
}

.hero-image:hover img {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.floating-card {
    position: absolute;
    background: var(--white);
    padding: 1rem 1.5rem;
    border-radius: 16px;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow);
    animation: float 4s ease-in-out infinite;
}

.presence-card {
    top: -20px;
    right: -20px;
}

.presence-card i { color: var(--primary); }

.voting-card {
    bottom: 20px;
    left: -40px;
    animation-delay: 2s;
}

.voting-card i { color: var(--secondary); }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Features Section */
#features {
    padding: 100px 0;
    background: var(--white);
}

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

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

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

.feature-card {
    padding: 2.5rem;
    background: var(--light);
    border-radius: 24px;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    background: var(--white);
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.icon-box {
    width: 60px;
    height: 60px;
    background: rgba(34, 197, 94, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    border-radius: 16px;
    margin-bottom: 1.5rem;
}

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

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Stats Section */
#impact {
    padding: 80px 0;
    background: var(--dark);
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary);
    font-family: 'Outfit', sans-serif;
}

.stat-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* WhatsApp Float */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 10px rgba(0,0,0,0.2);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    background-color: #128c7e;
}

.whatsapp-tooltip {
    position: absolute;
    right: 70px;
    background: var(--dark);
    color: white;
    padding: 5px 15px;
    border-radius: 8px;
    font-size: 14px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: 0.3s;
}

.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
}

/* Footer */
#main-footer {
    padding: 60px 0;
    background: var(--white);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-content p {
        margin: 0 auto 2rem;
    }
    .hero-btns {
        justify-content: center;
    }
    .hero-content h1 {
        font-size: 2.8rem;
    }
    .hero-image {
        max-width: 600px;
        margin: 0 auto;
    }
}

/* Integration Section */
#integration {
    padding: 80px 0;
    background: var(--white);
}

.integration-card {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: center;
    background: var(--light);
    padding: 4rem;
    border-radius: 32px;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.integration-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.integration-features {
    margin-top: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.int-feat {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
}

.int-feat i {
    font-size: 1.5rem;
    color: var(--primary);
    background: var(--white);
    padding: 1rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.int-feat h4 {
    margin-bottom: 0.25rem;
    font-size: 1.1rem;
}

.int-feat p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.integration-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
}

.xml-box, .sino-box {
    background: var(--white);
    padding: 2rem 1.5rem;
    border-radius: 20px;
    font-weight: 800;
    font-family: 'Outfit', sans-serif;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--primary);
    color: var(--primary);
}

.sino-box {
    border-color: var(--secondary);
    color: var(--secondary);
}

.sync-icon {
    font-size: 2rem;
    color: var(--text-muted);
    animation: rotate 10s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@media (max-width: 992px) {
    .integration-card {
        grid-template-columns: 1fr;
        padding: 2.5rem;
        text-align: center;
    }
    .int-feat {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* Transparency Section */
#transparency {
    padding: 100px 0;
    background: var(--light);
}

.transparency-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    background: var(--white);
    padding: 4rem;
    border-radius: 32px;
    box-shadow: var(--shadow);
}

.transparency-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.check-list {
    list-style: none;
    margin-top: 2rem;
}

.check-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.check-list i {
    color: var(--primary);
}

.transparency-image {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    height: 300px;
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 8rem;
}

/* Accordion */
.accordion {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    background: var(--white);
    margin-bottom: 1rem;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.accordion-header {
    padding: 1.5rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
}

.accordion-header:hover {
    background: rgba(34, 197, 94, 0.05);
}

.accordion-body {
    padding: 0 1.5rem 1.5rem;
    display: none;
    color: var(--text-muted);
}

.accordion-item.active .accordion-body {
    display: block;
}

.accordion-item.active .accordion-header i {
    transform: rotate(180deg);
}

/* Responsive Update */
@media (max-width: 992px) {
    .transparency-box {
        grid-template-columns: 1fr;
        padding: 2rem;
    }
}

@media (max-width: 768px) {
    nav {
        height: 70px;
    }
    .logo {
        font-size: 1.5rem;
    }
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--white);
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        gap: 1.5rem;
    }
}