/* ═══════════════════════════════════════════════════════════════════
   LAYOUT — Header, Footer, Container, Grid
   ═══════════════════════════════════════════════════════════════════ */

/* ── Container ── */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.container-wide {
    max-width: var(--container-wide);
}

.container-narrow {
    max-width: var(--container-narrow);
}

/* ── Section ── */
.section {
    padding: var(--space-section) 0;
    position: relative;
}

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

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {

    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

/* ═══════════════════════════════════════════════════════════════════
   HEADER / NAVIGATION
   ═══════════════════════════════════════════════════════════════════ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.25rem var(--container-padding);
    transition: all var(--duration-slow) var(--ease-smooth);
}

.site-header.scrolled {
    background: rgba(3, 0, 20, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 0.875rem var(--container-padding);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-wide);
    margin: 0 auto;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: var(--fw-bold);
    color: var(--color-text-white);
    z-index: 101;
}

.header-logo img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-link {
    padding: 0.5rem 1rem;
    font-family: var(--font-heading);
    font-size: var(--fs-small);
    font-weight: var(--fw-medium);
    color: var(--color-text-muted);
    letter-spacing: var(--ls-wide);
    transition: color var(--duration-normal) var(--ease-smooth);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-hero);
    border-radius: var(--radius-full);
    transform: translateX(-50%);
    transition: width var(--duration-normal) var(--ease-expo);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 20px;
}

.header-cta {
    z-index: 101;
}

/* ── Mobile Menu ── */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    z-index: 101;
    width: 28px;
    height: 20px;
    position: relative;
}

.mobile-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text-white);
    border-radius: var(--radius-full);
    transition: all var(--duration-normal) var(--ease-expo);
    position: absolute;
}

.mobile-toggle span:nth-child(1) {
    top: 0;
}

.mobile-toggle span:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.mobile-toggle span:nth-child(3) {
    bottom: 0;
}

.mobile-toggle.active span:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    bottom: 50%;
    transform: translateY(50%) rotate(-45deg);
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: min(380px, 85vw);
    height: 100%;
    background: rgba(3, 0, 20, 0.95);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border-left: 1px solid rgba(255, 255, 255, 0.08);
    z-index: 100;
    display: flex;
    flex-direction: column;
    padding: 6rem 2rem 2rem;
    transform: translateX(100%);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    overflow-y: auto;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.mobile-menu-backdrop.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-menu .nav-link {
    font-size: 1.1rem;
    font-weight: var(--fw-medium);
    color: var(--color-text-muted);
    padding: 0.875rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: block;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateX(20px);
}

.mobile-menu.active .nav-link {
    opacity: 1;
    transform: translateX(0);
}

.mobile-menu.active .nav-link:nth-child(1) {
    transition-delay: 0.05s;
}

.mobile-menu.active .nav-link:nth-child(2) {
    transition-delay: 0.1s;
}

.mobile-menu.active .nav-link:nth-child(3) {
    transition-delay: 0.15s;
}

.mobile-menu.active .nav-link:nth-child(4) {
    transition-delay: 0.2s;
}

.mobile-menu.active .nav-link:nth-child(5) {
    transition-delay: 0.25s;
}

.mobile-menu.active .nav-link:nth-child(6) {
    transition-delay: 0.3s;
}

.mobile-menu.active .nav-link:nth-child(7) {
    transition-delay: 0.35s;
}

.mobile-menu.active .nav-link:nth-child(8) {
    transition-delay: 0.4s;
}

.mobile-menu.active .nav-link:nth-child(9) {
    transition-delay: 0.45s;
}

.mobile-menu.active .nav-link:nth-child(10) {
    transition-delay: 0.5s;
}

.mobile-menu.active .nav-link:nth-child(11) {
    transition-delay: 0.55s;
}

.mobile-menu .nav-link:hover,
.mobile-menu .nav-link.active {
    color: var(--color-text-white);
    padding-left: 0.5rem;
}

.mobile-menu .nav-link.active {
    border-bottom-color: rgba(0, 212, 255, 0.3);
}

.mobile-menu-footer {
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.4s ease 0.5s;
}

.mobile-menu.active .mobile-menu-footer {
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu-cta {
    display: block;
    text-align: center;
    margin-bottom: 1.25rem;
}

.mobile-menu-social {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.mobile-menu-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

.mobile-menu-social a:hover {
    border-color: var(--color-cyan);
    color: var(--color-cyan);
}

@media (max-width: 1024px) {
    .header-nav {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }
}

@media (max-width: 480px) {
    .header-cta .btn {
        font-size: 0.6rem;
        padding: 0.5rem 0.75rem;
        letter-spacing: 0.05em;
    }

    .header-logo span {
        font-size: 1rem;
    }

    .header-logo img {
        width: 28px;
        height: 28px;
    }
}

/* ═══════════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════════ */
.site-footer {
    background: var(--color-bg-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
}

.footer-brand {
    max-width: 320px;
}

.footer-brand-name {
    font-family: var(--font-heading);
    font-size: var(--fs-h4);
    font-weight: var(--fw-bold);
    color: var(--color-text-white);
    margin-bottom: var(--space-sm);
}

.footer-brand-desc {
    color: var(--color-text-muted);
    font-size: var(--fs-small);
    line-height: var(--lh-relaxed);
}

.footer-heading {
    font-family: var(--font-heading);
    font-size: var(--fs-xs);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-widest);
    text-transform: uppercase;
    color: var(--color-text-dim);
    margin-bottom: var(--space-md);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.footer-link {
    color: var(--color-text-muted);
    font-size: var(--fs-small);
    transition: color var(--duration-normal);
}

.footer-link:hover {
    color: var(--color-text-white);
}

.footer-social {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.footer-social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--glass-border);
    color: var(--color-text-muted);
    font-size: 1rem;
    transition: all var(--duration-normal) var(--ease-smooth);
}

.footer-social-link:hover {
    border-color: var(--color-cyan);
    color: var(--color-cyan);
    background: var(--color-cyan-glow);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--fs-xs);
    color: var(--color-text-dim);
}

.footer-legal-links {
    display: flex;
    gap: var(--space-md);
}

.footer-legal-links a {
    color: var(--color-text-dim);
    transition: color var(--duration-normal);
}

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

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}