/* ============================================
   ENCODIUS - Layout Styles
   Header, Navigation, Footer
   ============================================ */

/* ============================================
   HEADER / NAVIGATION
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition-base);
}

.header.scrolled {
    background: rgba(10, 15, 28, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

.nav__logo {
    display: flex;
    align-items: center;
    gap: 8px;
    transform: scale(1);
    will-change: transform;
    transition: transform var(--transition-base);
}

.nav__logo:hover {
    transform: scale(1.05);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: filter var(--transition-base), text-shadow var(--transition-base);
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: 40px;
    list-style: none;
    margin-left: auto;
}

.nav__link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

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

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

.nav__link--cta {
    padding: 10px 24px;
    background: var(--gradient-primary);
    color: var(--color-bg-primary) !important;
    border-radius: var(--radius-md);
    font-weight: 600;
}

.nav__link--cta::after {
    display: none;
}

.nav__link--cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.3);
}

.nav__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav__toggle img {
    width: 24px;
    height: 24px;
}

.nav__backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav__backdrop.active {
    display: block;
    opacity: 1;
}

@media (min-width: 769px) {
    .nav__toggle {
        display: none;
    }

    .nav__backdrop {
        display: none !important;
    }
}

/* Mobile Menu */
.nav__mobile {
    position: fixed;
    top: 0;
    right: 0;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    height: 100dvh;
    background: var(--color-bg-secondary);
    padding: 100px 40px 40px;
    border-left: 1px solid var(--color-border);
    z-index: 1001;
    transform: translateX(100%);
    transition: transform 0.3s ease, visibility 0.3s ease;
    visibility: hidden;
}

.nav__mobile.active {
    transform: translateX(0);
    visibility: visible;
}

.nav__mobile-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav__mobile-close img {
    width: 24px;
    height: 24px;
}

.nav__mobile-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.nav__mobile-menu .nav__link {
    font-size: 1.25rem;
    display: block;
}

@media (min-width: 769px) {
    .nav__mobile {
        display: none !important;
    }
}

/* Nav Controls */
.nav__controls {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 32px;
}

/* Language Dropdown */
.lang-dropdown {
    position: relative;
}

.lang-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    min-width: 44px;
    height: 44px;
    padding: 0 12px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: 0.05em;
}

.lang-toggle:hover {
    border-color: var(--color-accent-primary);
    background: rgba(0, 212, 255, 0.1);
}

.lang-toggle[aria-expanded="true"] {
    border-color: var(--color-accent-primary);
    background: rgba(0, 212, 255, 0.1);
}

.lang-toggle__text {
    transition: all var(--transition-base);
}

.lang-toggle__arrow {
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.lang-toggle[aria-expanded="true"] .lang-toggle__arrow {
    transform: rotate(180deg);
}

.lang-dropdown__menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    min-width: 100%;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    list-style: none;
    padding: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(-8px);
    transition: all var(--transition-fast);
    z-index: 100;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.lang-dropdown.open .lang-dropdown__menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.lang-dropdown__item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    cursor: pointer;
    border-radius: calc(var(--radius-md) - 4px);
    transition: all var(--transition-fast);
}

.lang-dropdown__item:hover {
    background: rgba(0, 212, 255, 0.1);
    color: var(--color-text-primary);
}

.lang-dropdown__item.active {
    color: var(--color-accent-primary);
    background: rgba(0, 212, 255, 0.1);
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    margin-left: 16px;
}

.theme-toggle:hover {
    border-color: var(--color-accent-primary);
    background: rgba(0, 212, 255, 0.1);
    transform: scale(1.05);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    stroke: var(--color-text-primary);
    transition: all var(--transition-base);
}

.theme-toggle .icon-sun {
    display: none;
}

.theme-toggle .icon-moon {
    display: block;
}

[data-theme="light"] .theme-toggle .icon-sun {
    display: block;
}

[data-theme="light"] .theme-toggle .icon-moon {
    display: none;
}

/* Light mode header override - 3 color palette */
[data-theme="light"] .header {
    background: #1e3a5f;
}

[data-theme="light"] .header.scrolled {
    background: #1e3a5f;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

[data-theme="light"] .nav__link {
    color: rgba(255, 255, 255, 0.7);
}

[data-theme="light"] .nav__link:hover {
    color: #ffffff;
}

[data-theme="light"] .nav__link::after {
    background: #3b82f6;
}

[data-theme="light"] .nav__link--cta {
    background: #3b82f6;
    color: #ffffff !important;
}

[data-theme="light"] .nav__link--cta:hover {
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.4);
}

[data-theme="light"] .nav__toggle img,
[data-theme="light"] .nav__mobile-close img {
    filter: brightness(0) invert(1);
}

[data-theme="light"] .lang-toggle,
[data-theme="light"] .theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

[data-theme="light"] .lang-toggle:hover,
[data-theme="light"] .theme-toggle:hover {
    background: rgba(59, 130, 246, 0.3);
    border-color: #3b82f6;
}

[data-theme="light"] .theme-toggle svg {
    stroke: #ffffff;
}

[data-theme="light"] .lang-dropdown__menu {
    background: #1e3a5f;
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .lang-dropdown__item {
    color: rgba(255, 255, 255, 0.7);
}

[data-theme="light"] .lang-dropdown__item:hover {
    background: rgba(59, 130, 246, 0.3);
    color: #ffffff;
}

[data-theme="light"] .lang-dropdown__item.active {
    color: #3b82f6;
    background: rgba(59, 130, 246, 0.2);
}

[data-theme="light"] .nav__mobile {
    background: #1e3a5f;
    border-left-color: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .nav__mobile .nav__link {
    color: rgba(255, 255, 255, 0.7);
}

[data-theme="light"] .nav__mobile .nav__link:hover {
    color: #ffffff;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: 80px 0 40px;
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
}

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

.footer__logo {
    display: inline-block;
    margin-bottom: 16px;
    transform: scale(1);
    will-change: transform;
    transition: transform var(--transition-base);
}

.footer__logo:hover {
    transform: scale(1.05);
}

.footer__logo:hover .logo-text {
    filter: brightness(1.2);
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5), 0 0 40px rgba(139, 92, 246, 0.3);
}

.footer__tagline {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.footer__heading {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

.footer__links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer__links a {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer__links a:hover {
    color: var(--color-accent-primary);
}

.footer__bottom {
    padding-top: 40px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer__bottom p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* Light theme footer - 3 color palette */
[data-theme="light"] .footer {
    background: #1e3a5f;
    border-top-color: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .footer__tagline {
    color: rgba(255, 255, 255, 0.7);
}

[data-theme="light"] .footer__heading {
    color: #3b82f6;
}

[data-theme="light"] .footer__links a {
    color: rgba(255, 255, 255, 0.7);
}

[data-theme="light"] .footer__links a:hover {
    color: #3b82f6;
}

[data-theme="light"] .footer__bottom {
    border-top-color: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .footer__bottom p {
    color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   LAYOUT RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .footer__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav__menu {
        display: none;
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .nav__controls {
        margin-left: auto;
        margin-right: 8px;
        flex-shrink: 0;
    }

    .lang-toggle {
        min-width: 40px;
        height: 40px;
        padding: 0 10px;
    }

    .theme-toggle {
        width: 40px;
        height: 40px;
    }

    .theme-toggle {
        margin-left: 8px;
    }
}

@media (max-width: 480px) {
    .nav__controls {
        gap: 4px;
    }

    .lang-toggle {
        min-width: 36px;
        height: 36px;
        padding: 0 8px;
        font-size: 0.65rem;
    }

    .lang-toggle__arrow {
        width: 8px;
        height: 5px;
    }

    .theme-toggle {
        width: 36px;
        height: 36px;
        margin-left: 4px;
    }

    .theme-toggle svg {
        width: 16px;
        height: 16px;
    }
}