/* ===========================
   Hero Section
   =========================== */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#heroCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-title-main {
    font-family: var(--font-primary);
    font-size: clamp(80px, 15vw, 180px);
    font-weight: 800;
    letter-spacing: 15px;
    display: block;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #ffffff 0%, #999999 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease-out;
}

.hero-title-sub {
    font-family: var(--font-primary);
    font-size: clamp(14px, 2vw, 20px);
    font-weight: 300;
    letter-spacing: 5px;
    display: block;
    margin-bottom: 30px;
    opacity: 0.8;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-description {
    font-size: clamp(16px, 2.5vw, 24px);
    font-weight: 300;
    margin-bottom: 50px;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-cta {
    display: inline-block;
    padding: 18px 60px;
    background: transparent;
    color: var(--color-white);
    text-decoration: none;
    font-family: var(--font-primary);
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 3px;
    border: 2px solid var(--color-white);
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--color-white);
    transition: left var(--transition-speed) ease;
    z-index: -1;
}

.hero-cta:hover {
    color: var(--color-black);
}

.hero-cta:hover::before {
    left: 0;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    font-family: var(--font-primary);
    font-size: 12px;
    letter-spacing: 2px;
    opacity: 0.6;
    transition: opacity var(--transition-speed) ease;
    z-index: 2;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--color-white), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

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

@keyframes scrollLine {
    0%, 100% {
        transform: scaleY(0);
        transform-origin: top;
    }
    50% {
        transform: scaleY(1);
        transform-origin: top;
    }
}

/* ===========================
   Features Section
   =========================== */
.features {
    position: relative;
    z-index: 1;
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.feature-card {
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    transition: all var(--transition-speed) ease;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
}

.feature-card:hover {
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.02);
}

.feature-number {
    font-family: var(--font-primary);
    font-size: 72px;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.1);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    font-weight: 500;
}

.feature-card p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--color-gray-lighter);
}

.feature-link {
    display: inline-block;
    margin-top: 20px;
    color: var(--color-white);
    text-decoration: none;
    font-family: var(--font-primary);
    font-size: 14px;
    letter-spacing: 2px;
    transition: all var(--transition-speed) ease;
}

.feature-link:hover {
    letter-spacing: 3px;
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 768px) {
    .hero-title-main {
        letter-spacing: 10px;
    }

    .hero-title-sub {
        letter-spacing: 3px;
    }

    .features {
        padding: 60px 0;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        padding: 15px 40px;
        font-size: 14px;
    }
}