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

body {
    background-color: var(--color-bg-dark);
    color: var(--color-text-main);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
    font-family: var(--font-heading);
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-speed);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
}

/* Header */
.site-header {
    padding: 20px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(5, 5, 16, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: #FFFFFF; /* Solid White */
    letter-spacing: -0.02em;
}

.download-btn-sm {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-muted);
}
.download-btn-sm:hover {
    color: var(--color-text-main);
}

/* Hero Section */
.hero-section {
    padding: 160px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Topographic Background Overlay */
.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.02' fill-rule='evenodd'/%3E%3C/svg%3E");
    opacity: 0.5;
    z-index: -1;
}

.hero-title {
    font-size: 5rem;
    margin-bottom: 20px;
    color: #FFFFFF; /* Solid White */
    letter-spacing: -0.04em;
    text-shadow: 0 0 40px rgba(255, 42, 104, 0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    margin-bottom: 40px;
    font-weight: 300;
}

.cta-button {
    display: inline-block;
    padding: 16px 32px;
    background: var(--gradient-primary);
    color: white;
    font-weight: 600;
    border-radius: 50px;
    box-shadow: 0 10px 30px rgba(127, 19, 236, 0.4);
    transition: transform 0.2s, box-shadow 0.2s;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(127, 19, 236, 0.6);
}

/* Radar Visual Animation */
.hero-visual {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    z-index: -1;
    pointer-events: none;
}

.radar-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.05);
    opacity: 0;
    animation: ripple 4s infinite linear;
}

.circle-1 { width: 200px; height: 200px; animation-delay: 0s; }
.circle-2 { width: 400px; height: 400px; animation-delay: 1.3s; }
.circle-3 { width: 600px; height: 600px; animation-delay: 2.6s; }

@keyframes ripple {
    0% { transform: translate(-50%, -50%) scale(0.5); opacity: 0; border-color: rgba(5, 249, 226, 0.4); }
    50% { opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(1.2); opacity: 0; border-color: rgba(127, 19, 236, 0); }
}

/* Intro Section */
.intro-section {
    padding: 60px 0 100px;
    text-align: center;
}

.section-title {
    font-size: 2.5rem;
    line-height: 1.3;
    margin-bottom: 24px;
    background: linear-gradient(to right, #fff, #aaa);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Feature Grid - Olympic Layout */
.features-section {
    padding: 20px 0 100px;
}

.feature-grid {
    display: flex;
    flex-direction: column;
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.grid-row {
    display: flex;
    justify-content: center;
    gap: 30px;
    width: 100%;
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--card-border-radius);
    padding: 40px 30px;
    flex: 1; /* Distribute space evenly */
    max-width: 310px; /* Consistently constrain width */
    min-width: 250px;
    text-align: left;
    transition: var(--transition-speed);
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.feature-card:hover {
    background: var(--color-bg-card-hover);
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.card-icon {
    margin-bottom: 20px;
    color: var(--color-primary-end);
}

.icon-sonar { color: var(--color-accent-cyan); }
.icon-energy { color: var(--color-accent-cyan); }
.icon-pin, .icon-heart, .icon-lock { color: var(--color-primary-start); }

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: #fff;
}

.feature-card p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* Visual Showcase */
.visual-showcase {
    padding: 50px 0 100px;
    overflow: hidden;
}

.showcase-container {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: nowrap; /* Force single row */
    overflow-x: auto; /* Allow horizontal scroll if needed on very small screens */
    width: 100%;
}

.mockup-card {
    position: relative;
    width: 300px;
    /* Allow card to shrink but maintain aspect ratio */
    flex: 0 1 auto;
    aspect-ratio: 1 / 2;
    height: auto; /* Height will be determined by width + aspect ratio */
    min-width: 150px; /* Prevent it from becoming too small */
    background: #1a1a24;
    border-radius: 40px;
    border: 8px solid #2a2a35;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    transition: transform 0.4s;
}

.mockup-card:hover {
    transform: translateY(-10px);
}

.mockup-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8; /* Placeholder effect */
}

/* Footer */
.site-footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    color: #FFFFFF; /* Solid White */
    margin-bottom: 10px;
}

.copyright {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.footer-download-link {
    font-size: 0.9rem;
    color: var(--color-text-main);
    opacity: 0.6;
    border-bottom: 1px solid transparent;
}
.footer-download-link:hover {
    opacity: 1;
    border-bottom-color: var(--color-text-main);
}

/* Responsive */
@media (max-width: 768px) {
    .site-header .container {
        padding: 0 20px;
    }

    .hero-title {
        font-size: 3rem;
    }

    .grid-row {
        flex-direction: column;
        align-items: center;
    }

    .feature-card {
        max-width: 100%;
        width: 100%;
    }
}