/* ═══════════════════════════════════════════════════════
   Kártyaudvar — header.css
   Transparent → solid nav, hamburger, mobile menu,
   scroll state
   ═══════════════════════════════════════════════════════ */

/* ── Header Base ───────────────────────────────────── */
.kv-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-h);
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: background var(--dur) var(--ease),
                border-color var(--dur) var(--ease),
                box-shadow var(--dur) var(--ease);
}

/* Scrolled state — JS adds this class */
.kv-header.is-scrolled {
    background: var(--c-bg);
    border-bottom-color: var(--c-border);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.kv-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 var(--s-24);
}

/* ── Logo ──────────────────────────────────────────── */
.kv-header__logo {
    display: flex;
    align-items: center;
    gap: var(--s-8);
    text-decoration: none;
    flex-shrink: 0;
}

.kv-header__logo img {
    height: 36px;
    width: auto;
}

.kv-header__logo-text {
    font-family: var(--f-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--c-white);
    letter-spacing: 0.5px;
}

/* ── Desktop Nav ───────────────────────────────────── */
.kv-nav {
    display: none;
    align-items: center;
    gap: var(--s-32);
}

.kv-nav__link {
    font-family: var(--f-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--c-text-dim);
    text-decoration: none;
    transition: color var(--dur) var(--ease);
    position: relative;
}

.kv-nav__link:hover,
.kv-nav__link.is-active {
    color: var(--c-accent-hover);
    font-weight: 600;
}

.kv-nav__cta {
    /* Accent button in nav (Privát foglalás) */
}

/* ── Hamburger ─────────────────────────────────────── */
.kv-hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    z-index: 1010;
}

.kv-hamburger__line {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--c-text);
    border-radius: 2px;
    transition: transform var(--dur) var(--ease),
                opacity var(--dur) var(--ease);
    transform-origin: center;
}

/* Hamburger → X */
.kv-hamburger.is-open .kv-hamburger__line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.kv-hamburger.is-open .kv-hamburger__line:nth-child(2) {
    opacity: 0;
}
.kv-hamburger.is-open .kv-hamburger__line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile Menu ───────────────────────────────────── */
.kv-mobile-menu {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--c-bg);
    z-index: 999;
    padding: var(--s-32) var(--s-24);
    display: flex;
    flex-direction: column;
    gap: var(--s-8);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--dur) var(--ease);
}

.kv-mobile-menu.is-open {
    transform: translateX(0);
}

.kv-mobile-menu__link {
    font-family: var(--f-body);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--c-text);
    text-decoration: none;
    padding: var(--s-12) 0;
    border-bottom: 1px solid var(--c-border);
    transition: color var(--dur) var(--ease);
}

.kv-mobile-menu__link:hover,
.kv-mobile-menu__link.is-active {
    color: var(--c-accent-hover);
}

.kv-mobile-menu__cta {
    margin-top: var(--s-24);
}