/**
 * Albireo - Layout
 * Container, navigation, footer, structural elements
 */

/* ═══════════════════════════════════════
   Container
   ═══════════════════════════════════════ */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    position: relative;
    z-index: 1;
}

.container-narrow {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ═══════════════════════════════════════
   Section padding
   ═══════════════════════════════════════ */

.section-padded {
    padding: var(--spacing-section) 0;
}

.section-dark {
    background: var(--midnight);
}

/* ═══════════════════════════════════════
   Scroll Progress Bar
   ═══════════════════════════════════════ */

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    width: 0;
    background: linear-gradient(90deg, var(--soft-gold), var(--gold-light));
    z-index: var(--z-toast);
    transition: width 0.1s linear;
}

/* ═══════════════════════════════════════
   Navigation
   ═══════════════════════════════════════ */

.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    padding: 18px 0;
    transition: var(--transition-base);
}

.main-nav.scrolled {
    background: rgba(10, 14, 26, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 10px 0;
    border-bottom: 1px solid var(--subtle-border);
}

.main-nav.hidden {
    transform: translateY(-100%);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--warm-white);
    transition: var(--transition-base);
}

.nav-brand:hover {
    color: var(--soft-gold);
}

.nav-logo {
    color: var(--soft-gold);
    font-size: 1.6rem;
}

.nav-logo-img {
    width: 36px;
    height: 36px;
    transition: var(--transition-base);
}

.nav-brand:hover .nav-logo-img {
    transform: rotate(15deg);
}

.nav-brand-text {
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links li a {
    padding: 8px 16px;
    font-size: var(--fs-small);
    color: var(--light-text);
    transition: var(--transition-base);
    border-radius: var(--radius-small);
    font-weight: 400;
    letter-spacing: 0.3px;
}

.nav-links li a:hover {
    color: var(--warm-white);
    background: rgba(255, 255, 255, 0.05);
}

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

/* Language Switcher */
.lang-switcher {
    position: relative;
}

.lang-current {
    padding: 6px 14px;
    font-size: var(--fs-small);
    color: var(--light-text);
    border: 1px solid var(--subtle-border);
    border-radius: var(--radius-small);
    transition: var(--transition-base);
    cursor: pointer;
    background: transparent;
}

.lang-current:hover {
    color: var(--soft-gold);
    border-color: var(--soft-gold);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--deep-blue);
    border: 1px solid var(--subtle-border);
    border-radius: var(--radius-small);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--transition-base);
    min-width: 120px;
    box-shadow: var(--shadow-card);
}

[dir="rtl"] .lang-dropdown {
    right: auto;
    left: 0;
}

.lang-switcher.open .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-dropdown a {
    display: block;
    padding: 10px 16px;
    font-size: var(--fs-small);
    color: var(--light-text);
    transition: var(--transition-fast);
}

.lang-dropdown a:hover,
.lang-dropdown a.active {
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--soft-gold);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--warm-white);
    border-radius: 2px;
    transition: var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ═══════════════════════════════════════
   Footer
   ═══════════════════════════════════════ */

.site-footer {
    background: var(--deep-blue);
    padding: 60px 0 30px;
    border-top: 1px solid var(--subtle-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--soft-gold);
    margin-bottom: 12px;
    font-weight: 400;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-logo {
    font-size: 1.2rem;
}

.footer-brand p {
    color: var(--light-text);
    line-height: 1.8;
    margin-bottom: 20px;
    max-width: 500px;
}

.footer-links h4 {
    color: var(--soft-gold);
    margin-bottom: 20px;
    font-size: 1.05rem;
    font-weight: 500;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    color: var(--light-text);
    transition: var(--transition-base);
    font-size: var(--fs-small);
}

.footer-links ul li a:hover {
    color: var(--soft-gold);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--subtle-border);
    color: var(--light-text);
    font-size: var(--fs-tiny);
}

/* ═══════════════════════════════════════
   Parallax Dividers
   ═══════════════════════════════════════ */

.parallax-divider {
    height: 280px;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    overflow: hidden;
}

.parallax-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        var(--night-sky) 0%,
        rgba(10, 14, 26, 0.3) 40%,
        rgba(10, 14, 26, 0.3) 60%,
        var(--night-sky) 100%
    );
}

@media (max-width: 768px) {
    .parallax-divider {
        height: 180px;
        background-attachment: scroll;
    }
}

/* ═══════════════════════════════════════
   Back to Top
   ═══════════════════════════════════════ */

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 46px;
    height: 46px;
    background: var(--soft-gold);
    color: var(--night-sky);
    border-radius: 50%;
    font-size: 1.2rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition-base);
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-card);
    cursor: pointer;
}

[dir="rtl"] .back-to-top {
    right: auto;
    left: 30px;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--gold-light);
    transform: translateY(-3px);
}

/* ═══════════════════════════════════════
   Responsive
   ═══════════════════════════════════════ */

@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    /* Mobile navigation */
    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--overlay-darker, rgba(10, 14, 26, 0.97));
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 8px;
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-slow);
    }

    .nav-links.active {
        opacity: 1;
        visibility: visible;
    }

    .nav-links li a {
        font-size: 1.2rem;
        padding: 14px 24px;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .site-footer {
        padding: 40px 0 20px;
    }
}