/* Header Styles - Unified based on contact.html */

/* Header */
.header {
    padding: 30px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    transition: all 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

.header.scrolled {
    padding: 15px 0;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.05);
}

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

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0;
    transform: translateY(-20px);
    letter-spacing: 0.1em;
    font-family: var(--font-main);
    cursor: pointer;
    text-decoration: none;
}

.nav {
    display: flex;
    gap: 40px;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.05em;
    position: relative;
    opacity: 0;
    transform: translateY(-20px);
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0%;
    height: 2px;
    bottom: -5px;
    left: 0;
    right: 0;
    margin: 0 auto;
    background-color: var(--primary-color);
    transition: width 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.nav-link:hover::after {
    width: 100%;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    font-size: 12px;
    letter-spacing: 0.05em;
    color: var(--text-dark);
    opacity: 0;
    transform: translateY(-20px);
    margin-left: 20px;
    padding-left: 20px;
    border-left: 1px solid rgba(0, 0, 0, 0.1);
}

.lang-opt {
    cursor: pointer;
    transition: opacity 0.3s ease;
    opacity: 0.5;
}

.lang-opt:hover,
.lang-opt.active {
    opacity: 1;
}

.lang-separator {
    opacity: 0.5;
}

/* View Transitions for Header */
.header {
    view-transition-name: header;
}

::view-transition-old(header),
::view-transition-new(header) {
    animation: none;
}


/* Header White Variant (for dark backgrounds) */
.header.header-white .logo,
.header.dark-mode .logo {
    color: var(--white);
    transition: color 0.3s;
}

.header.header-white .nav-link,
.header.dark-mode .nav-link {
    color: var(--white);
    transition: color 0.3s;
}

.header.header-white .nav-link::after,
.header.dark-mode .nav-link::after {
    background-color: var(--white);
}

.header.header-white .hamburger-line,
.header.dark-mode .hamburger-line {
    background-color: var(--white);
}

.header.header-white .lang-switch,
.header.dark-mode .lang-switch {
    color: var(--white);
    border-left-color: rgba(255, 255, 255, 0.3);
}

/* Revert to standard on scroll */
.header.header-white.scrolled .logo,
.header.header-white.light-theme .logo,
.header.dark-mode.scrolled .logo {
    color: var(--primary-color);
}

.header.header-white.scrolled .nav-link,
.header.header-white.light-theme .nav-link,
.header.dark-mode.scrolled .nav-link {
    color: var(--text-dark);
}

.header.header-white.scrolled .nav-link::after,
.header.header-white.light-theme .nav-link::after,
.header.dark-mode.scrolled .nav-link::after {
    background-color: var(--primary-color);
}

.header.header-white.scrolled .hamburger-line,
.header.header-white.light-theme .hamburger-line,
.header.dark-mode.scrolled .hamburger-line {
    background-color: var(--primary-color);
}

.header.header-white.scrolled .lang-switch,
.header.header-white.light-theme .lang-switch,
.header.dark-mode.scrolled .lang-switch {
    color: var(--text-dark);
    border-left-color: rgba(0, 0, 0, 0.1);
}

/* Active Page State */
.nav-link.active {
    color: var(--primary-color);
}

.nav-link.active::after {
    width: 100%;
    background-color: var(--primary-color);
}

/* Active Page State - White Header (Initial) */
.header.header-white .nav-link.active,
.header.dark-mode .nav-link.active {
    color: var(--white);
}

.header.header-white .nav-link.active::after,
.header.dark-mode .nav-link.active::after {
    background-color: var(--white);
}

/* Active Page State - White Header (Scrolled) */
.header.header-white.scrolled .nav-link.active,
.header.header-white.light-theme .nav-link.active,
.header.dark-mode.scrolled .nav-link.active {
    color: var(--primary-color);
}

.header.header-white.scrolled .nav-link.active::after,
.header.header-white.light-theme .nav-link.active::after,
.header.dark-mode.scrolled .nav-link.active::after {
    width: 0%;
}

/* Responsive Styles */
@media (max-width: 1200px) {

    /* Header Responsive for Tablet */
    .logo {
        font-size: 24px;
    }

    .nav-link {
        font-size: 11px;
    }

    /* Show Hamburger on Tablet */
    .hamburger-btn {
        display: flex;
        padding: 0;
    }

    .nav {
        display: none;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 20px 0;
    }
}

@media (max-width: 480px) {
    .footer-logo {
        font-size: 32px;
    }

    /* Header Logo Responsive for Mobile */
    .logo {
        font-size: 15px;
    }

    .header-container {
        padding: 0 20px;
    }
}