/* ===== HEADER & NAVIGARE ===== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    padding: 16px 0;
    transition: all var(--transition-base);
}

.site-header.scrolled {
    background: var(--header-bg-scrolled);
    border-bottom-color: var(--color-border);
    padding: 12px 0;
}

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

/* Logo */
.logo {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--color-text);
    letter-spacing: 2px;
    transition: opacity var(--transition-base);
}

.logo span {
    color: var(--color-accent);
}

.logo:hover {
    opacity: 0.8;
    color: var(--color-text);
}

/* Nav Links */
.nav-list {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: color var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
}

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

/* Header CTA */
.header-cta {
    padding: 10px 20px;
    font-size: var(--text-xs);
}

/* Theme Toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    font-size: 1rem;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

.theme-toggle:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* Iconițe toggle: implicit dark mode => arătăm soarele (pt a trece la light) */
.theme-toggle #theme-icon-dark {
    display: none;
}
.theme-toggle #theme-icon-light {
    display: block;
}

/* Când e light mode, arătăm luna (pt a trece la dark) */
[data-theme="light"] .theme-toggle #theme-icon-dark {
    display: block;
}
[data-theme="light"] .theme-toggle #theme-icon-light {
    display: none;
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
    z-index: calc(var(--z-mobile-menu) + 1);
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* Hamburger animat la open */
.hamburger.open .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.open .hamburger-line:nth-child(2) {
    opacity: 0;
}
.hamburger.open .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--mobile-menu-bg);
    z-index: var(--z-mobile-menu);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.mobile-menu.open {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-list {
    text-align: center;
}

.mobile-nav-list li {
    margin-bottom: var(--space-xl);
}

.mobile-nav-list a {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text);
    transition: color var(--transition-base);
}

.mobile-nav-list a:hover {
    color: var(--color-accent);
}

.mobile-cta {
    margin-top: var(--space-xl);
}

/* Responsive */
@media (max-width: 768px) {
    .main-nav {
        display: none;
    }

    .header-cta {
        display: none;
    }

    .hamburger {
        display: flex;
    }
}