/* ============================================================
   CFM main.css — navigation, footer, shared layout
============================================================ */

/* --- Top navigation (Hanwha-style transparent) ------------ */
.nav {
    position: fixed; inset: 0 0 auto 0;
    height: var(--nav-h);
    z-index: 100;
    display: flex; align-items: center;
    transition: background .35s var(--ease), box-shadow .35s var(--ease), color .35s var(--ease);
}
.nav__inner {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 clamp(20px, 4vw, 48px);
    display: flex; align-items: center; justify-content: space-between;
    gap: 40px;
}
.nav__logo {
    display: flex; align-items: center; gap: 12px;
    font-weight: 800; font-size: 1.15rem; letter-spacing: .04em;
}
.nav__logo img { height: 52px; width: auto; transition: opacity .3s var(--ease); }
.nav__logo .logo-dark  { display: none; }
.nav__logo .logo-light { display: block; }

.nav__menu {
    display: flex; gap: 2px; align-items: center;
}
.nav__item { position: relative; }
.nav__link {
    position: relative;
    display: inline-flex; align-items: center; gap: 4px;
    padding: 10px 16px;
    font-weight: 500; font-size: .96rem;
    color: #fff;
    transition: color .25s var(--ease);
}
.nav__caret {
    font-size: .62em;
    line-height: 1;
    opacity: .6;
    transition: transform .25s var(--ease), opacity .25s var(--ease);
}
.nav__link::after {
    content: ''; position: absolute; left: 16px; right: 16px; bottom: 4px;
    height: 2px; background: var(--cfm-orange);
    transform: scaleX(0); transform-origin: left;
    transition: transform .35s var(--ease);
}
.nav__link:hover { color: var(--cfm-orange-light); }
.nav__link:hover::after,
.nav__link.is-active::after { transform: scaleX(1); }
.nav__item.has-sub:hover .nav__caret,
.nav__item.has-sub:focus-within .nav__caret { transform: rotate(180deg); opacity: 1; }

/* Dropdown submenu */
.nav__submenu {
    position: absolute;
    top: calc(100% - 4px); left: 0;
    min-width: 220px;
    padding: 10px 0;
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(12px);
    border-radius: 0 0 12px 12px;
    box-shadow: 0 14px 36px rgba(0,0,0,.12);
    border-top: 2px solid var(--cfm-orange);
    opacity: 0; visibility: hidden;
    transform: translateY(-8px);
    transition: opacity .25s var(--ease), visibility .25s var(--ease), transform .25s var(--ease);
    z-index: 5;
}
.nav__item.has-sub:hover > .nav__submenu,
.nav__item.has-sub:focus-within > .nav__submenu {
    opacity: 1; visibility: visible; transform: none;
}
.nav__submenu a {
    display: block;
    padding: 10px 22px;
    font-size: .92rem;
    color: var(--cfm-ink-2);
    white-space: nowrap;
    border-left: 2px solid transparent;
    transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), padding .2s var(--ease);
}
.nav__submenu a:hover {
    background: var(--cfm-bg-soft);
    color: var(--cfm-orange);
    border-left-color: var(--cfm-orange);
    padding-left: 26px;
}

.nav__right {
    display: flex; align-items: center; gap: 16px;
}
.nav__lang {
    display: flex; align-items: center; gap: 6px;
    font-size: .85rem; font-weight: 600; letter-spacing: .08em;
}
.nav__lang a {
    padding: 6px 8px; color: rgba(255,255,255,.55);
    transition: color .25s var(--ease);
}
.nav__lang a.is-active { color: #fff; }
.nav__lang a:hover { color: var(--cfm-orange-light); }
.nav__lang .sep { color: rgba(255,255,255,.3); }

.nav__toggle { display: none; }

/* Scrolled / dark page states */
.nav.is-solid {
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 10px rgba(0,0,0,.06);
}
.nav.is-solid .nav__logo .logo-dark  { display: block; }
.nav.is-solid .nav__logo .logo-light { display: none; }
.nav.is-solid .nav__link { color: var(--cfm-ink); }
.nav.is-solid .nav__link:hover { color: var(--cfm-orange); }
.nav.is-solid .nav__lang a { color: var(--cfm-muted); }
.nav.is-solid .nav__lang a.is-active { color: var(--cfm-ink); }
.nav.is-solid .nav__lang .sep { color: var(--cfm-line); }

/* --- Footer ----------------------------------------------- */
.footer {
    background: var(--cfm-bg-dark);
    color: rgba(255,255,255,.68);
    padding: 72px 0 36px;
}
.footer__inner {
    max-width: var(--container); margin: 0 auto;
    padding: 0 clamp(20px, 4vw, 48px);
    display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 48px;
}
.footer__brand img { height: 48px; margin-bottom: 18px; }
.footer__brand p   { color: rgba(255,255,255,.55); max-width: 360px; font-size: .93rem; }
.footer h4 {
    color: #fff; font-size: .95rem; letter-spacing: .06em;
    margin-bottom: 18px; text-transform: uppercase;
}
.footer ul li { margin-bottom: 10px; font-size: .92rem; }
.footer a:hover { color: var(--cfm-orange-light); }
.footer__bottom {
    max-width: var(--container); margin: 48px auto 0;
    padding: 24px clamp(20px, 4vw, 48px) 0;
    border-top: 1px solid rgba(255,255,255,.08);
    display: flex; justify-content: space-between; align-items: center;
    font-size: .85rem; color: rgba(255,255,255,.45);
    gap: 20px; flex-wrap: wrap;
}
.footer__legal { display: inline-flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.footer__legal a { color: rgba(255,255,255,.6); transition: color .2s; }
.footer__legal a:hover { color: var(--cfm-orange-light); }
.footer__legal .sep { color: rgba(255,255,255,.2); }

/* --- Mobile drawer (off-canvas) --------------------------- */
.nav-drawer {
    position: fixed; top: 0; right: 0; bottom: 0;
    width: min(86vw, 360px);
    background: var(--cfm-bg-dark);
    color: #fff;
    z-index: 110;
    padding: 28px 28px 40px;
    display: flex; flex-direction: column;
    transform: translateX(105%);
    transition: transform .4s var(--ease);
    overflow-y: auto;
}
.nav-drawer__backdrop {
    position: fixed; inset: 0;
    background: rgba(0,0,0,.55);
    z-index: 105;
    opacity: 0; visibility: hidden;
    transition: opacity .3s var(--ease), visibility .3s var(--ease);
}
body.nav-open .nav-drawer          { transform: none; }
body.nav-open .nav-drawer[aria-hidden="true"] { aria-hidden: 'false'; }
body.nav-open .nav-drawer__backdrop { opacity: 1; visibility: visible; }
body.nav-open { overflow: hidden; }

.nav-drawer__head {
    display: flex; justify-content: space-between; align-items: center;
    padding-bottom: 18px;
    border-bottom: 1px solid rgba(255,255,255,.1);
    margin-bottom: 24px;
}
.nav-drawer__logo { height: 38px; width: auto; filter: brightness(0) invert(1); }
.nav-drawer__close {
    width: 40px; height: 40px; border-radius: 50%;
    background: rgba(255,255,255,.08); color: #fff;
    font-size: 1.1rem; display: inline-flex; align-items: center; justify-content: center;
    transition: background .25s var(--ease);
}
.nav-drawer__close:hover { background: rgba(255,255,255,.18); }

.nav-drawer__menu {
    display: flex; flex-direction: column;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255,255,255,.08);
    margin-bottom: 24px;
}
.nav-drawer__item {
    border-bottom: 1px solid rgba(255,255,255,.06);
}
.nav-drawer__item:last-child { border-bottom: 0; }

.nav-drawer__link,
.nav-drawer__toggle {
    width: 100%;
    padding: 16px 4px;
    font-size: 1.05rem; font-weight: 600;
    color: rgba(255,255,255,.82);
    background: none; border: 0;
    text-align: left; cursor: pointer;
    display: flex; align-items: center; justify-content: space-between;
    transition: color .25s var(--ease), padding .25s var(--ease);
}
.nav-drawer__link::after {
    content: '→';
    color: rgba(255,255,255,.3);
    transition: color .25s var(--ease), transform .25s var(--ease);
}
.nav-drawer__link:hover,
.nav-drawer__link.is-active,
.nav-drawer__toggle:hover,
.nav-drawer__toggle.is-active {
    color: var(--cfm-orange-light);
    padding-left: 10px;
}
.nav-drawer__link:hover::after,
.nav-drawer__link.is-active::after {
    color: var(--cfm-orange-light);
    transform: translateX(4px);
}
.nav-drawer__caret {
    color: rgba(255,255,255,.35);
    transition: transform .25s var(--ease), color .25s var(--ease);
    font-size: .7em;
}
.nav-drawer__item.is-open .nav-drawer__caret {
    transform: rotate(180deg);
    color: var(--cfm-orange-light);
}

.nav-drawer__sub {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows .32s var(--ease);
}
.nav-drawer__item.is-open .nav-drawer__sub {
    grid-template-rows: 1fr;
}
.nav-drawer__sub-inner {
    overflow: hidden;
    min-height: 0;
    padding-left: 4px;
}
.nav-drawer__sub-inner a {
    display: block;
    padding: 10px 14px;
    font-size: .95rem;
    color: rgba(255,255,255,.6);
    border-left: 2px solid rgba(255,255,255,.1);
    margin-left: 8px;
    transition: color .2s var(--ease), border-color .2s var(--ease), padding .2s var(--ease);
}
.nav-drawer__sub-inner a:hover {
    color: var(--cfm-orange-light);
    border-left-color: var(--cfm-orange);
    padding-left: 18px;
}
.nav-drawer__sub-inner a.all {
    color: rgba(255,255,255,.88);
    font-weight: 700;
    font-size: .88rem;
    letter-spacing: .04em;
    padding-bottom: 14px;
    margin-bottom: 4px;
    border-left: 0;
    margin-left: 0;
}
.nav-drawer__sub-inner a.all:hover { color: var(--cfm-orange-light); padding-left: 0; }

.nav-drawer__lang {
    display: flex; gap: 8px; align-items: center;
    font-size: .9rem; letter-spacing: .08em; font-weight: 600;
    margin-bottom: 24px;
}
.nav-drawer__lang a {
    padding: 6px 10px;
    color: rgba(255,255,255,.5);
    transition: color .25s var(--ease);
}
.nav-drawer__lang a.is-active { color: #fff; }
.nav-drawer__lang a:hover     { color: var(--cfm-orange-light); }
.nav-drawer__lang .sep        { color: rgba(255,255,255,.25); }

.nav-drawer__contact {
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,.08);
    font-size: .88rem;
    color: rgba(255,255,255,.55);
}
.nav-drawer__contact p { color: inherit; margin-bottom: 4px; }
.nav-drawer__contact a { color: var(--cfm-orange-light); }

/* --- Responsive ------------------------------------------- */
@media (max-width: 960px) {
    :root { --nav-h: 68px; }
    .nav__inner { gap: 12px; padding: 0 16px; }
    .nav__logo img { height: 38px; }
    .nav__right { gap: 10px; }
    .nav__menu { display: none; }
    .nav__toggle {
        display: inline-flex; width: 40px; height: 40px;
        align-items: center; justify-content: center;
        flex: 0 0 auto;
    }
    .nav__toggle span, .nav__toggle span::before, .nav__toggle span::after {
        content: ''; display: block; width: 22px; height: 2px; background: #fff; position: relative;
        transition: transform .3s var(--ease), background .3s var(--ease);
    }
    .nav__toggle span::before { position: absolute; top: -7px; }
    .nav__toggle span::after  { position: absolute; top:  7px; }
    .nav.is-solid .nav__toggle span,
    .nav.is-solid .nav__toggle span::before,
    .nav.is-solid .nav__toggle span::after { background: var(--cfm-ink); }

    .footer__inner { grid-template-columns: 1fr; gap: 32px; }
    .footer__bottom { flex-direction: column; gap: 10px; }
}
@media (min-width: 961px) {
    /* Desktop: drawer hidden completely */
    .nav-drawer, .nav-drawer__backdrop { display: none; }
}