/* Apple-style minimalist theme */
:root {
    --bg-color: #fbfbfd;
    --text-primary: #1d1d1f;
    --text-secondary: #424245;
    --accent: #0071e3;
    --accent-hover: #0077ed;
    --border-color: #d2d2d7;
    --card-bg: #ffffff;
    --light-bg: #f5f5f7;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
    overflow-x: hidden;
}

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

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

.section-padding {
    padding: 100px 0;
}

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

.navbar {
    padding: 10px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    background: rgba(251, 251, 253, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s;
}

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

.btn-nav {
    background-color: var(--text-primary);
    color: #fff !important;
    padding: 8px 20px;
    border-radius: 20px;
    transition: background-color 0.3s, transform 0.1s !important;
}

.btn-nav:hover {
    background-color: #000 !important;
    transform: scale(0.98);
}

.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 100px 20px 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-content h1 {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 700;
    letter-spacing: -0.05em;
    line-height: 1.05;
    margin-bottom: 10px;
}

.hero-content h2 {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 40px;
    letter-spacing: -0.02em;
}

.manufacturing-status {
    background-color: rgba(0, 113, 227, 0.05);
    border-radius: 20px;
    padding: 30px;
    max-width: 700px;
    margin: 0 auto 40px;
    text-align: left;
}

.manufacturing-status h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--accent);
    text-align: center;
}

.manufacturing-status p {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.manufacturing-status ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.manufacturing-status li {
    background: #fff;
    padding: 8px 16px;
    border-radius: 15px;
    font-size: 0.95rem;
    font-weight: 500;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    color: var(--accent);
}

.interest-form {
    display: flex;
    justify-content: center;
    gap: 10px;
    max-width: 500px;
    margin: 0 auto;
}

.interest-form input {
    padding: 15px 20px;
    border-radius: 30px;
    border: 1px solid var(--border-color);
    background: #fff;
    font-size: 1rem;
    flex: 1;
    outline: none;
    transition: border-color 0.3s;
}

.interest-form input:focus {
    border-color: var(--accent);
}

.btn-primary {
    background-color: var(--accent);
    color: #fff;
    border: none;
    padding: 15px 30px;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.1s;
}

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

.btn-primary:active {
    transform: scale(0.98);
}

.form-message {
    margin-top: 15px;
    font-size: 0.9rem;
    color: #28a745;
}

.hidden {
    display: none;
}

.more-info {
    margin-top: 25px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.more-info a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.more-info a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

.hero-visual {
    width: 100%;
    margin-top: 60px;
    display: flex;
    justify-content: center;
}

.engine-container {
    width: 100%;
    max-width: 800px;
    position: relative;
    display: flex;
    justify-content: center;
}

.floating-engine {
    width: 100%;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 30px 40px rgba(0, 0, 0, 0.15));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 50px;
}

.intro-text {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 20px;
    line-height: 1.6;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-card {
    background: var(--card-bg);
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.06);
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Engine Table */
.engine-table-wrapper {
    overflow-x: auto;
    margin-bottom: 40px;
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    padding: 20px;
    text-align: left;
}

.engine-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

.engine-table th,
.engine-table td {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: top;
    text-align: left;
}

.engine-table th {
    font-weight: 600;
    color: var(--text-primary);
    background-color: var(--light-bg);
}

.engine-table th:first-child {
    border-top-left-radius: 10px;
    border-bottom-left-radius: 10px;
}

.engine-table th:last-child {
    border-top-right-radius: 10px;
    border-bottom-right-radius: 10px;
}

.engine-table td {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

.engine-table tr:last-child td {
    border-bottom: none;
}

/* Engine Gallery */
.engine-gallery {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-top: 50px;
}

.gallery-item {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    width: calc(25% - 22.5px);
    min-width: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-5px);
}

.gallery-item img {
    width: 100%;
    height: 150px;
    object-fit: contain;
    mix-blend-mode: multiply;
    margin-bottom: 15px;
}

.gallery-item p {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.solution-card {
    background: var(--card-bg);
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    text-align: left;
    transition: transform 0.3s ease;
}

.solution-card:hover {
    transform: translateY(-5px);
}

.solution-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.solution-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer {
    padding: 40px 20px;
    border-top: 1px solid var(--border-color);
    background: #fff;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links {
    margin-top: 15px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.3s;
}

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

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
    }
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    .interest-form {
        flex-direction: column;
    }
    .engine-container {
        height: 300px;
    }
    .manufacturing-status h3 {
        margin-bottom: 10px;
    }
    .manufacturing-status ul {
        flex-direction: column;
        align-items: flex-start;
    }
}