/*
 * Header Styles - Cloudridge Studios
 * Navigation and header components
 */

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    padding: var(--space-4) 0;
    transition: all var(--transition-base);
    background: transparent;
}

.header.is-scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
    padding: var(--space-3) 0;
}

[data-theme="dark"] .header.is-scrolled {
    background: rgba(15, 23, 42, 0.95);
}

.header.is-hidden {
    transform: translateY(-100%);
}

/* ===== NAVIGATION ===== */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
}

/* ===== LOGO ===== */
.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    z-index: 10;
}

.logo-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.logo-text {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    letter-spacing: var(--tracking-tight);
}

.logo-accent {
    color: var(--color-primary-bright, var(--color-primary));
}

/* ===== NAV MENU ===== */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

/* Animated underline */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all var(--transition-base);
    transform: translateX(-50%);
    border-radius: var(--radius-full);
}

.nav-link:hover::after,
.nav-link.is-active::after {
    width: calc(100% - var(--space-8));
}

.nav-link:hover {
    color: var(--color-primary-bright, var(--color-primary));
    background: rgba(74, 144, 217, 0.1);
}

.nav-link.is-active {
    color: var(--color-primary-bright, var(--color-primary));
}

[data-theme="light"] .nav-link:hover {
    background: var(--color-primary-50);
}

/* ===== NAV ACTIONS ===== */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* ===== THEME TOGGLE ===== */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

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

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

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

/* ===== NAV CTA BUTTON ===== */
.nav-cta {
    padding: var(--space-2) var(--space-5);
    font-size: var(--text-sm);
}

/* ===== HAMBURGER MENU ===== */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    padding: var(--space-2);
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 10;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.hamburger-line:not(:last-child) {
    margin-bottom: 6px;
}

.nav-toggle.is-active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.is-active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.nav-toggle.is-active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ===== MOBILE MENU ===== */
@media (max-width: 1024px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        max-width: 400px;
        height: 100vh;
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        gap: var(--space-2);
        padding: 100px var(--space-8) var(--space-8);
        background: var(--bg-primary);
        box-shadow: var(--shadow-2xl);
        transition: right var(--transition-base);
        overflow-y: auto;
    }

    .nav-menu.is-open {
        right: 0;
    }

    .nav-item {
        width: 100%;
    }

    .nav-link {
        padding: var(--space-4);
        font-size: var(--text-lg);
        border-radius: var(--radius-lg);
    }

    .nav-cta {
        display: none;
    }

    /* Mobile menu backdrop */
    .nav-menu::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        z-index: -1;
    }

    .nav-menu.is-open::before {
        opacity: 1;
        visibility: visible;
        left: -100%;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        max-width: 100%;
    }

    .theme-toggle {
        display: none;
    }

    .lang-selector {
        display: none;
    }
}

/* ===== LANGUAGE SELECTOR ===== */
.lang-selector {
    position: relative;
}

.lang-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-primary);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

.lang-toggle:hover {
    background: var(--bg-tertiary);
    border-color: var(--color-primary);
}

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

.lang-toggle .lang-arrow {
    width: 12px;
    height: 12px;
    transition: transform var(--transition-base);
}

.lang-selector.is-open .lang-arrow {
    transform: rotate(180deg);
}

.lang-current {
    min-width: 24px;
    text-align: center;
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    min-width: 160px;
    max-height: 320px;
    overflow-y: auto;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    z-index: var(--z-dropdown);
}

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

.lang-option {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--text-primary);
    text-align: left;
    transition: background var(--transition-fast);
}

.lang-option:hover {
    background: var(--bg-secondary);
}

.lang-option:first-child {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.lang-option:last-child {
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.lang-option.active {
    background: var(--color-primary-50);
    color: var(--color-primary);
    font-weight: var(--font-semibold);
}

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

[dir="rtl"] .nav-menu {
    right: auto;
    left: 0;