/* ==========================================================================
   Layout - Navigation, Footer, Containers
   ========================================================================== */

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

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

/* Page Wrapper */
.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    padding-top: var(--space-24);
    padding-bottom: var(--space-24);
}

/* Header / Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    padding: var(--space-4) 0;
    background-color: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-base), background-color var(--transition-base);
}

.header.scrolled {
    border-color: var(--color-border);
    background-color: rgba(10, 10, 10, 0.95);
    box-shadow: var(--shadow-depth);
}

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

/* Logo */
.logo {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    letter-spacing: var(--tracking-tight);
    transition: color var(--transition-fast);
}

.logo:hover {
    color: var(--color-accent);
}

.logo span {
    color: var(--color-accent);
}

/* Desktop Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav__link {
    position: relative;
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    padding: var(--space-2) 0;
    transition: color var(--duration-base) var(--ease-out-expo);
}

.nav__link:hover {
    transform: translateY(-1px);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

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

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

/* Mobile Menu Toggle */
.nav__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
    gap: 6px;
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: transform var(--transition-base), opacity var(--transition-fast);
}

.nav__toggle.active span:first-child {
    transform: rotate(45deg) translate(5.5px, 5.5px);
}

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

.nav__toggle.active span:last-child {
    transform: rotate(-45deg) translate(5.5px, -5.5px);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav__toggle {
        display: flex;
    }

    .nav__list {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--space-8);
        background-color: var(--color-bg);
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition-base), visibility var(--transition-base);
    }

    .nav__list.active {
        opacity: 1;
        visibility: visible;
    }

    .nav__link {
        font-size: var(--text-xl);
    }
}

/* Footer */
.footer {
    padding: var(--space-12) 0;
    border-top: 1px solid var(--color-border);
    background-color: var(--color-surface);
}

.footer__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
    text-align: center;
}

.footer__social {
    display: flex;
    gap: var(--space-4);
}

.footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background-color: var(--color-surface-alt);
    color: var(--color-text-secondary);
    transition:
        background-color var(--duration-base) var(--ease-out-expo),
        color var(--transition-fast),
        transform var(--duration-base) var(--ease-out-back),
        box-shadow var(--duration-base) var(--ease-out-expo);
}

.footer__social-link:hover {
    background-color: var(--color-accent);
    color: var(--color-bg);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow-soft);
}

.footer__social-link svg {
    width: 20px;
    height: 20px;
}

.footer__copyright {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* Section Layouts */
.section {
    padding: var(--space-20) 0;
}

.section--hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--space-32);
}

.section__header {
    margin-bottom: var(--space-12);
}

.section__title {
    margin-bottom: var(--space-4);
}

.section__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-8);
}

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

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

@media (max-width: 992px) {
    .grid--3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {

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

    .section {
        padding: var(--space-16) 0;
    }

    .section--hero {
        padding-top: var(--space-24);
    }
}