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

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Yu Gothic', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.transparent {
    background: transparent;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header.transparent .logo {
    color: #fff;
}

.header.transparent .nav-link {
    color: rgba(255, 255, 255, 0.9);
}

.header.transparent .lang-toggle a {
    color: rgba(255, 255, 255, 0.7);
}

.header.transparent .lang-toggle a.active {
    color: #fff;
}

.nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.6rem;
    font-weight: 900;
    color: #000;
    letter-spacing: 0.5px;
    font-family: 'Arial', sans-serif;
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 3rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    position: relative;
    letter-spacing: 0.5px;
}

.nav-link:hover {
    color: #000;
}

.nav-link.active {
    color: #000;
    font-weight: 600;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -8px;
    left: 0;
    background: #000;
    transition: width 0.3s ease;
}

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

.lang-toggle {
    font-size: 0.8rem;
    color: #666;
    margin-left: 1rem;
}

.lang-toggle a {
    color: #666;
    text-decoration: none;
    margin: 0 0.3rem;
    transition: color 0.3s ease;
}

.lang-toggle a.active {
    color: #000;
    font-weight: 600;
}

/* Buttons */
.btn {
    padding: 1.2rem 2.5rem;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-block;
    text-align: center;
    letter-spacing: 0.5px;
    min-width: 180px;
}

.btn-primary {
    background: #000;
    color: white;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    background: #1a1a1a;
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.25);
}

.btn-secondary {
    background: transparent;
    color: #000;
    border: 2px solid #000;
}

.btn-secondary:hover {
    background: #000;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.btn-white {
    background: white;
    color: #000;
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2);
}

.btn-white:hover {
    background: #f0f0f0;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.3);
}

/* Footer */
.footer {
    background: #000;
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 3rem;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
}

.footer-section h3 {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: #fff;
    font-weight: 600;
}

.footer-section p,
.footer-section a {
    color: #999;
    text-decoration: none;
    line-height: 1.8;
    margin-bottom: 0.8rem;
    display: block;
    font-size: 0.9rem;
}

.footer-section a:hover {
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid #333;
    margin-top: 3rem;
    padding-top: 2rem;
    text-align: center;
    color: #666;
    font-size: 0.8rem;
}

/* Contact Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.4s ease, visibility 0.4s;
}

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

.modal-content {
    background: white;
    border-radius: 20px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.8) translateY(40px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-overlay.active .modal-content {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.modal-header {
    padding: 3rem 3rem 2rem;
    border-bottom: 1px solid #f0f0f0;
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: #f0f0f0;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    color: #666;
}

.modal-close:hover {
    background: #000;
    color: white;
    transform: rotate(90deg);
}

.modal-title {
    font-size: 2rem;
    font-weight: 700;
    color: #000;
    margin-bottom: 0.5rem;
}

.modal-subtitle {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.6;
}

.modal-body {
    padding: 3rem;
}

.form-group {
    margin-bottom: 2rem;
}

.form-label {
    display: block;
    font-weight: 600;
    color: #000;
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
}

.form-label .required {
    color: #e74c3c;
    margin-left: 0.3rem;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 1rem 1.2rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
    background: #fafafa;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: #000;
    background: white;
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-color: #fafafa;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23333' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: calc(100% - 1.2rem) center;
    padding-right: 3rem;
}

.form-select:focus {
    background-color: white;
}

.form-submit {
    width: 100%;
    padding: 1.2rem;
    background: #000;
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.5px;
}

.form-submit:hover {
    background: #1a1a1a;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.form-submit:active {
    transform: translateY(0);
}

.form-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.contact-info {
    background: #f8f6f3;
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 2rem;
}

.contact-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #000;
    margin-bottom: 1rem;
}

.contact-info p {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

.contact-info a {
    color: #000;
    text-decoration: none;
    font-weight: 500;
}

.contact-info a:hover {
    text-decoration: underline;
}

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

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .modal-content {
        width: 95%;
    }
    
    .modal-header,
    .modal-body {
        padding: 2rem;
    }
}