/* -------------------------------------------------------------------------- */
/*  LAYOUT & GRID SYSTEM                                                       */
/* -------------------------------------------------------------------------- */

/* --- Sections --- */
section {
    padding: var(--space-xl) 0;
    position: relative;
}

/* --- Hero Section --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: var(--header-height);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60vw;
    height: 60vw;
    background: var(--gradient-glow);
    opacity: 0.15;
    filter: blur(100px);
    z-index: -1;
    animation: pulse 8s ease-in-out infinite alternate;
}

.hero__content {
    text-align: center;
    max-width: 800px;
    z-index: 1;
}

.hero__actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    margin-top: var(--space-lg);
    flex-wrap: wrap;
}

/* --- Grid System --- */
.grid {
    display: grid;
    gap: var(--space-md);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

@media (min-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* --- Header/Nav --- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 100;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.site-header.scrolled {
    background: rgba(3, 7, 18, 0.8);
    box-shadow: var(--shadow-sm);
}

.site-header__inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-list {
    display: flex;
    gap: var(--space-md);
    list-style: none;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--color-text-muted);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

/* --- Footer --- */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: var(--space-lg) 0;
    margin-top: var(--space-xl);
    background: rgba(0, 0, 0, 0.2);
}

.site-footer__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

/* --- Animations --- */
@keyframes pulse {
    0% {
        transform: translate(-50%, -50%) scale(0.8);
        opacity: 0.1;
    }

    100% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.2;
    }
}

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}