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

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --tiktok: #000000;
    --youtube: #ff0000;
    --twitter: #1da1f2;
    --facebook: #1877f2;
    --linkedin: #0a66c2;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
}

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

/* Navbar */
.navbar {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
}

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

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.nav-links a:hover,
.nav-links a.active {
    background: rgba(255, 255, 255, 0.2);
}

.language-switcher {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.language-switcher a {
    padding: 0.5rem 1rem;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: background 0.3s;
    font-weight: 500;
}

.language-switcher a:hover,
.language-switcher a.active {
    background: rgba(255, 255, 255, 0.2);
}

/* Hero Section with Carousel */
.hero {
    position: relative;
    height: 600px;
    overflow: hidden;
}

.carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-item {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-item.active {
    opacity: 1;
}

.carousel-item[data-platform="tiktok"] {
    background: linear-gradient(135deg, #000000, #ff0050);
}

.carousel-item[data-platform="youtube"] {
    background: linear-gradient(135deg, #ff0000, #cc0000);
}

.carousel-item[data-platform="twitter"] {
    background: linear-gradient(135deg, #1da1f2, #0c85d0);
}

.carousel-item[data-platform="facebook"] {
    background: linear-gradient(135deg, #1877f2, #0e5fc9);
}

.carousel-item[data-platform="linkedin"] {
    background: linear-gradient(135deg, #0a66c2, #004182);
}

.carousel-content {
    text-align: center;
    color: white;
    z-index: 10;
}

.carousel-content h2 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease-out;
}

.carousel-content p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.3);
    color: white;
    border: none;
    padding: 1rem 1.5rem;
    font-size: 1.5rem;
    cursor: pointer;
    border-radius: 50%;
    transition: background 0.3s;
    z-index: 100;
}

.carousel-btn:hover {
    background: rgba(255, 255, 255, 0.5);
}

.carousel-btn.prev {
    left: 2rem;
}

.carousel-btn.next {
    right: 2rem;
}

.carousel-indicators {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    z-index: 100;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
}

.indicator.active {
    background: white;
    transform: scale(1.3);
}

/* Services Section */
.services {
    padding: 5rem 0;
    background: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-dark);
}

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

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.service-card.tiktok .service-icon {
    background: var(--tiktok);
    color: white;
}

.service-card.youtube .service-icon {
    background: var(--youtube);
    color: white;
}

.service-card.twitter .service-icon {
    background: var(--twitter);
    color: white;
}

.service-card.facebook .service-icon {
    background: var(--facebook);
    color: white;
}

.service-card.linkedin .service-icon {
    background: var(--linkedin);
    color: white;
}

.service-icon svg {
    width: 40px;
    height: 40px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.card-btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
}

.card-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.4);
}

/* Features Section */
.features {
    padding: 5rem 0;
}

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

.feature-item {
    text-align: center;
    padding: 2rem;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-item h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.feature-item p {
    color: var(--text-light);
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    text-align: center;
    padding: 2rem 0;
}

.footer p {
    margin: 0.5rem 0;
}

.contact-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
}

.contact-links span {
    color: rgba(255, 255, 255, 0.8);
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: #0088cc;
    border-radius: 50%;
    transition: transform 0.3s, box-shadow 0.3s;
}

.social-icon:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 136, 204, 0.4);
}

.social-icon svg {
    width: 24px;
    height: 24px;
    fill: white;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Service Page Styles */
.service-hero {
    padding: 6rem 0 4rem;
    text-align: center;
}

.service-hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-hero .subtitle {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.platform-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.platform-icon svg {
    width: 60px;
    height: 60px;
}

.api-section {
    padding: 4rem 0;
    background: var(--bg-light);
}

.api-endpoints {
    display: grid;
    gap: 2rem;
    margin-top: 2rem;
}

.endpoint-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.endpoint-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.endpoint-method {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--primary-color);
    color: white;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-right: 1rem;
}

.endpoint-url {
    font-family: 'Courier New', monospace;
    color: var(--text-light);
    margin: 1rem 0;
}

.code-block {
    background: #1f2937;
    color: #f9fafb;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1rem 0;
}

.code-block code {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

/* Collapsible Fields Section */
.fields-toggle {
    margin-top: 1rem;
}

.toggle-header {
    background: var(--bg-light);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
    user-select: none;
}

.toggle-header:hover {
    background: #e5e7eb;
}

.toggle-header h4 {
    margin: 0;
    color: var(--text-dark);
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.toggle-icon {
    font-size: 1.2rem;
    transition: transform 0.3s;
}

.toggle-header.active .toggle-icon {
    transform: rotate(180deg);
}

.fields-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.fields-content.active {
    max-height: 2000px;
    transition: max-height 0.5s ease-in;
}

.field-list {
    padding: 1.5rem;
    background: white;
}

.field-item {
    padding: 1rem 0;
    border-bottom: 1px solid #e5e7eb;
}

.field-item:last-child {
    border-bottom: none;
}

.field-name {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.3rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.field-name span {
    font-size: 1rem;
}

.field-description {
    color: var(--text-light);
    line-height: 1.6;
    margin-left: 1.5rem;
}

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

.features-list li {
    padding: 1rem;
    margin-bottom: 1rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.features-list li:before {
    content: "✓";
    color: var(--primary-color);
    font-weight: bold;
    margin-right: 1rem;
    font-size: 1.2rem;
}

/* How to Use Section */
.how-to-use {
    padding: 4rem 0;
    background: white;
}

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

.usage-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.usage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.usage-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.usage-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.usage-card p {
    color: var(--text-light);
    line-height: 1.8;
}

.usage-steps {
    display: grid;
    gap: 1.5rem;
    margin-top: 2rem;
}

.step-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
}

.step-content h4 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.step-content p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        flex-direction: column;
        gap: 0.5rem;
    }

    .carousel-content h2 {
        font-size: 2rem;
    }

    .carousel-content p {
        font-size: 1rem;
    }

    .carousel-btn {
        padding: 0.5rem 1rem;
        font-size: 1rem;
    }

    .carousel-btn.prev {
        left: 1rem;
    }

    .carousel-btn.next {
        right: 1rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .service-hero h1 {
        font-size: 2rem;
    }
}