/**
 * Layout Components
 * Page structure, header, navigation, footer, and grid system
 */

/* ==========================================================================
   PAGE CONTAINER & LAYOUT
   ========================================================================== */

.page-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.content-wrap {
    flex: 1 0 auto;
}

/* Reserve space for async layout components to avoid CLS. */
#header {
    min-height: calc(5rem + 1px);
}

#footer {
    min-height: 18rem;
}

@media (max-width: 768px) {
    #header {
        min-height: calc(3.75rem + 1px);
    }

    #footer {
        min-height: 20rem;
    }
}

/* ==========================================================================
   CONTAINER & GRID SYSTEM
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
    background-color: transparent;
    color: var(--text-primary);
    transition:
        background-color var(--transition-normal),
        color var(--transition-normal);
}

/* ==========================================================================
   HEADER COMPONENT - Glassmorphism Design
   ========================================================================== */

header {
    background-color: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: none;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    transition: all var(--transition-normal);
    border-bottom: 1px solid var(--border-subtle);
}

[data-theme='dark'] header {
    background-color: rgba(22, 26, 31, 0.92);
    border-bottom-color: var(--border-subtle);
    box-shadow: none;
}

header.header--scrolled {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

[data-theme='dark'] header.header--scrolled {
    box-shadow: var(--shadow-soft);
}

.header__container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.header__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) 0;
    min-height: 64px;
    position: relative;
}

/* ==========================================================================
   HEADER BRAND & LOGO
   ========================================================================== */

.header__brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex: 1;
    max-width: calc(100% - 200px);
}

.header__brand-link {
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.header__logo {
    height: 50px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
    background-color: var(--color-white);
    border-radius: 50%;
    padding: var(--space-2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

@media (max-width: 768px) {
    .header__logo {
        height: 45px;
    }
}

.header__title {
    font-family: var(--font-family-headings);
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--color-primary);
    margin: 0;
    line-height: var(--line-height-tight);
    letter-spacing: -0.03em;
    flex: 1;
}

[data-theme='dark'] .header__title {
    color: var(--text-primary);
}

[data-theme='dark'] .header__logo {
    background-color: var(--surface-2);
    border: 1px solid var(--border-subtle);
}

@media (max-width: 768px) {
    .header__title {
        font-size: var(--font-size-lg);
    }
}

/* ==========================================================================
   HEADER CONTROLS (Language, Theme, Search)
   ========================================================================== */

.header__controls {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .header__controls {
        gap: var(--space-2);
    }
}

/* Language Selector */
.language-selector {
    display: flex;
    gap: 2px;
    background: var(--surface-2);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    padding: 3px;
    align-items: center;
}

[data-theme='dark'] .language-selector {
    background: var(--surface-2);
    border-color: var(--border-subtle);
}

.lang-btn {
    background: var(--surface-2);
    color: var(--text-muted);
    border: 1px solid var(--border-subtle);
    padding: var(--space-1) var(--space-2);
    border-radius: 15px;
    cursor: pointer;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-fast);
    min-width: auto;
    text-align: center;
    line-height: 1;
}

.lang-btn:hover {
    color: var(--text-primary);
    background: var(--surface-3);
    border-color: var(--border-strong);
}

[data-theme='dark'] .lang-btn {
    background: var(--surface-2);
    border-color: var(--border-subtle);
    color: var(--text-muted);
}

[data-theme='dark'] .lang-btn:hover {
    color: var(--text-primary);
    background: var(--surface-3);
    border-color: var(--border-strong);
}

.lang-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.lang-btn--active {
    background: var(--accent-soft) !important;
    color: var(--text-primary) !important;
    border-color: rgba(26, 77, 115, 0.35) !important;
    box-shadow: none;
}

[data-theme='dark'] .lang-btn--active {
    background: var(--accent-soft) !important;
    color: var(--text-primary) !important;
    border-color: rgba(43, 110, 168, 0.45) !important;
    box-shadow: none;
}

/* Theme Toggle Button */
.theme-toggle {
    background: transparent;
    color: var(--color-primary);
    border: none;
    padding: var(--space-2);
    cursor: pointer;
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    transition: all var(--transition-fast);
    margin-left: var(--space-2);
}

[data-theme='dark'] .theme-toggle {
    color: var(--color-white);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.theme-toggle:hover {
    background: rgba(0, 0, 0, 0.05);
}

[data-theme='dark'] .theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   MOBILE MENU TOGGLE
   ========================================================================== */

.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 2rem;
    height: 2rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    position: relative;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.menu-toggle:hover {
    background: rgba(0, 0, 0, 0.05);
}

[data-theme='dark'] .menu-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.menu-toggle span {
    width: 100%;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    transform-origin: center;
    display: block;
    position: absolute;
    left: 0;
}

[data-theme='dark'] .menu-toggle span {
    background-color: var(--color-white);
}

.menu-toggle span:first-child {
    top: 6px;
}

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

.menu-toggle span:nth-child(3) {
    bottom: 6px;
}

/* Active State (X icon) */
.menu-toggle.active span:first-child {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

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

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

/* ==========================================================================
   NAVIGATION - Desktop & Mobile
   ========================================================================== */

.nav {
    display: none;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.98);
    border-top: 1px solid var(--border-subtle);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

[data-theme='dark'] .nav {
    background: rgba(22, 26, 31, 0.98);
    border-top-color: var(--border-subtle);
}

.nav.open,
.nav.active {
    max-height: 500px;
}

.nav__list {
    display: flex;
    list-style: none;
    gap: var(--space-3);
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav__item {
    margin: 0;
}

.nav__link {
    color: var(--color-dark);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    font-size: 0.95rem;
    padding: var(--space-2) var(--space-4);
    border-radius: 50px;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    display: block;
}

.nav__link:hover {
    color: var(--accent-strong);
    background-color: var(--surface-3);
}

[data-theme='dark'] .nav__link {
    color: var(--text-secondary);
}

[data-theme='dark'] .nav__link:hover {
    color: var(--text-primary);
    background-color: var(--surface-3);
    border-color: var(--border-subtle);
}

.nav__link.active {
    color: var(--accent);
    background-color: transparent;
    border-color: transparent;
    border-bottom: 2px solid var(--accent);
    border-radius: 0;
    font-weight: var(--font-weight-bold);
}

[data-theme='dark'] .nav__link.active {
    color: var(--text-primary);
    background-color: transparent;
    border-color: transparent;
    border-bottom: 2px solid var(--accent);
    border-radius: 0;
}

/* Desktop Navigation */
@media (min-width: 769px) {
    .menu-toggle {
        display: none;
    }

    .nav {
        display: flex;
        flex-direction: row;
        background: transparent;
        border-top: none;
        max-height: none;
        overflow: visible;
        position: static;
    }

    .nav__list {
        flex-direction: row;
    }
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        width: 100%;
        display: flex;
        box-shadow: var(--shadow-soft);
    }

    .nav__list {
        flex-direction: column;
        padding: var(--space-4);
        gap: var(--space-2);
        width: 100%;
    }

    .nav__link {
        width: 100%;
        text-align: left;
        padding: var(--space-3) var(--space-4);
    }

    .nav__link.active {
        background-color: var(--accent-soft);
        border-bottom: none;
        border-radius: var(--radius-md);
    }
}

/* ==========================================================================
   FOOTER COMPONENT
   ========================================================================== */

footer {
    background-color: var(--bg-secondary);
    padding: var(--space-6) 0;
    margin-top: auto;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

[data-theme='dark'] footer {
    background-color: var(--surface-1);
    border-top: 1px solid var(--border-subtle);
    color: var(--text-primary);
}

.footer__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    max-width: 840px;
    margin: 0 auto;
    padding: 0 var(--space-4);
    text-align: center;
}

.footer__mission {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    max-width: 640px;
}

.footer__mission p {
    margin: 0;
}

.footer__disclaimer-box {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    background: var(--surface-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    max-width: 560px;
    text-align: left;
}

.footer__disclaimer-box i {
    color: var(--text-muted);
    margin-top: 3px;
    flex-shrink: 0;
}

.footer__disclaimer-box p {
    margin: 0;
}

[data-theme='dark'] .footer__disclaimer-box {
    background: var(--surface-2);
    border-color: var(--border-subtle);
}

.footer__links {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
    justify-content: center;
}

.footer__links a {
    color: var(--accent);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.footer__links a:hover {
    text-decoration: underline;
    color: var(--accent-strong);
}

.footer__separator {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    user-select: none;
}

.footer__copyright {
    margin-top: var(--space-2);
    padding-top: var(--space-3);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    width: 100%;
    max-width: 600px;
}

[data-theme='dark'] .footer__copyright {
    border-top-color: rgba(255, 255, 255, 0.05);
}

/* ==========================================================================
   RESPONSIVE LAYOUT ADJUSTMENTS
   ========================================================================== */

@media (max-width: 768px) {
    .header__content {
        padding: var(--space-1) 0;
        min-height: 52px;
    }

    .header__brand {
        max-width: calc(100% - 150px);
    }

    .container {
        padding: 0 var(--space-3);
    }

    footer {
        padding: var(--space-4) 0;
    }

    .footer__content {
        gap: var(--space-3);
    }
}

.header__brand-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.header__subtitle {
    margin: 0;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    line-height: 1.2;
}

[data-theme='dark'] .header__subtitle {
    color: var(--text-muted);
}