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

:root {
    --primary-color: #3b82f6;
    --secondary-color: #1e40af;
    --accent-color: #10b981;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-color: #ffffff;
    --bg-light: #f9fafb;
    --border-color: #e5e7eb;
}

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

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

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

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

.logo h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 2rem;
}

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

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: var(--bg-light);
}

.lang-link {
    font-weight: 600;
    letter-spacing: 0.3px;
}

.lang-divider {
    color: var(--text-light);
    font-size: 0.9rem;
}

.lang-link[aria-current="page"] {
    color: var(--primary-color);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    transition: 0.3s;
}

/* Buttons */
.btn {
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: transparent;
    color: var(--primary-color);
    border: 1.5px solid rgba(59, 130, 246, 0.5);
    box-shadow: none;
}

.btn-primary:hover {
    background: rgba(59, 130, 246, 0.08);
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: none;
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

.btn-block {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

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

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-placeholder {
    width: 100%;
    max-width: 560px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 18px;
    backdrop-filter: blur(10px);
}

.hero-image-preview {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
}

/* Services Section */
.services {
    padding: 80px 0;
    background: var(--bg-light);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-color);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    margin: 12px auto 0;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

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

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

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.service-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.service-link:hover {
    color: var(--secondary-color);
}

/* Service Details Section */
.service-details {
    padding: 90px 0;
    background: radial-gradient(1200px 600px at 10% -10%, rgba(59, 130, 246, 0.08), transparent 60%),
                radial-gradient(900px 500px at 100% 0%, rgba(16, 185, 129, 0.08), transparent 55%),
                #ffffff;
}

.detail-card {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    padding: 3.2rem;
    border-radius: 22px;
    margin-bottom: 3.2rem;
    box-shadow: 0 12px 36px rgba(15, 23, 42, 0.1);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
    border: 1px solid rgba(148, 163, 184, 0.25);
    position: relative;
    overflow: hidden;
}

.detail-card:hover {
    box-shadow: 0 24px 50px rgba(15, 23, 42, 0.16);
    transform: translateY(-8px);
}

.detail-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 7px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-color), var(--accent-color));
    border-radius: 22px 0 0 22px;
}

.detail-card::after {
    content: '';
    position: absolute;
    top: -30px;
    right: -30px;
    width: 140px;
    height: 140px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.12), transparent 70%);
    pointer-events: none;
}

.detail-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 0.75rem;
}

.detail-icon {
    font-size: 3rem;
    line-height: 1;
    width: 68px;
    height: 68px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.18), rgba(16, 185, 129, 0.12));
    color: var(--primary-color);
    box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.2);
}

.detail-header h3 {
    font-size: 2.1rem;
    color: var(--text-color);
    margin: 0;
}

.detail-subtitle {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    padding-left: 5.5rem;
}

.detail-content {
    padding-left: 5.5rem;
}

.detail-content p {
    color: var(--text-light);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.detail-content p::before {
    content: '•';
    color: var(--accent-color);
    margin-right: 8px;
}

.detail-content p:last-child {
    margin-bottom: 0;
}

/* About Section */
.about {
    padding: 80px 0;
}

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

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.about-text {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
}

.about-text > p {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.features {
    display: grid;
    gap: 1.5rem;
}

.feature {
    display: flex;
    gap: 1rem;
    align-items: start;
}

.feature-icon {
    background: var(--primary-color);
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature h4 {
    margin-bottom: 0.25rem;
    color: var(--text-color);
}

.feature p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.about-custom {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
}

.about-custom h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.about-custom p {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.about-custom p:last-child {
    margin-bottom: 0;
}

.stat {
    text-align: center;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 12px;
}

.stat h3 {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

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

/* Contact Section */
.contact {
    padding: 80px 0;
    background: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-top: 3rem;
}

.contact-info,
.contact-form {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-info:hover,
.contact-form:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.info-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.info-icon {
    font-size: 2rem;
}

.info-item h4 {
    margin-bottom: 0.25rem;
    color: var(--text-color);
}

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

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
}

/* Footer */
.footer {
    background: var(--text-color);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
}

.footer-section p {
    opacity: 0.8;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section ul li a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-section ul li a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2rem;
    }

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

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

    .about-content {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .detail-card {
        padding: 2rem 1.5rem;
    }

    .detail-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .detail-header h3 {
        font-size: 1.5rem;
    }

    .detail-subtitle,
    .detail-content {
        padding-left: 0;
    }

    .detail-icon {
        font-size: 2.5rem;
    }
}