/* =========================================================
   WaterFall Labs - Shared Site Shell
   File: assets/css/site.css
   ========================================================= */

/* Base shell reset */
header,
nav,
footer,
.mobile-nav,
.dropdown,
.dropdown-menu,
.hamburger {
    box-sizing: border-box;
}

/* ---------- Header base ---------- */
header.navbar,
header {
    position: sticky;
    top: 0;
    z-index: 1200;
    padding: 10px 20px;
    display: flex;
    flex-direction: row;
    gap: 10px;
    background:
        linear-gradient(180deg, rgba(5, 9, 15, 0.94) 0%, rgba(10, 16, 24, 0.9) 100%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow:
        0 10px 22px rgba(0, 0, 0, 0.22),
        inset 0 1px 0 rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(10px);
}

/* ---------- Desktop nav layout ---------- */
nav,
.desktop-nav {
    display: flex;
    flex: 1;
    justify-content: space-evenly;
    align-items: center;
    gap: 6px;
}

/* ---------- Desktop nav items ---------- */
.nav-item {
    position: relative;
    color: rgba(255, 255, 255, 0.92);
    text-decoration: none;
    padding: 10px 16px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 16px;
    font-family: 'Orbitron', sans-serif;
    background: transparent;
    transition:
        transform 0.16s ease,
        background-color 0.18s ease,
        border-color 0.18s ease,
        box-shadow 0.18s ease,
        color 0.18s ease;
}

.nav-item:hover {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.12) 0%, rgba(159, 207, 255, 0.1) 100%);
    color: #ffffff;
    border-color: rgba(159, 207, 255, 0.22);
    box-shadow:
        0 8px 16px rgba(0, 0, 0, 0.14),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
    transform: translateY(-1px);
}

/* ---------- Dropdown ---------- */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    cursor: pointer;
    padding: 0;
    display: block;
    font: inherit;
    color: inherit;
}

.dropdown-menu {
    display: none;
    position: absolute;
    margin-top: 8px;
    min-width: 180px;
    padding: 8px;
    z-index: 1300;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 14px;
    background:
        linear-gradient(180deg, rgba(8, 12, 18, 0.96) 0%, rgba(13, 20, 30, 0.96) 100%);
    box-shadow:
        0 16px 28px rgba(0, 0, 0, 0.28),
        inset 0 1px 0 rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(10px);
}

.dropdown-menu a {
    display: block;
    padding: 8px 12px;
    border-radius: 10px;
    color: rgba(255, 255, 255, 0.92);
    text-decoration: none;
    transition: background-color 0.16s ease, color 0.16s ease, transform 0.16s ease;
}

.dropdown-menu a:hover {
    background: rgba(159, 207, 255, 0.14);
    color: #ffffff;
    transform: translateX(2px);
}

.dropdown:hover .dropdown-menu {
    display: block;
}

/* ---------- Hamburger ---------- */
.hamburger {
    display: none;
    font-size: 32px;
    color: white;
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 12px;
    padding: 6px 12px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.04) 100%);
    box-shadow:
        0 6px 12px rgba(0, 0, 0, 0.16),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
    transition:
        transform 0.16s ease,
        background-color 0.18s ease,
        border-color 0.18s ease;
}

.hamburger:hover {
    transform: translateY(-1px);
    border-color: rgba(159, 207, 255, 0.22);
    background:
        linear-gradient(180deg, rgba(159, 207, 255, 0.14) 0%, rgba(255, 255, 255, 0.06) 100%);
}

/* ---------- Mobile nav ---------- */
.mobile-nav {
    position: fixed;
    top: 0;
    left: -280px;
    width: 280px;
    height: 100vh;
    padding: 22px 18px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 1400;
    transition: left 0.3s ease;
    background:
        linear-gradient(180deg, rgba(5, 9, 15, 0.98) 0%, rgba(11, 17, 26, 0.98) 100%);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 14px 0 28px rgba(0, 0, 0, 0.28);
    backdrop-filter: blur(10px);
}

.mobile-nav a {
    display: block;
    padding: 12px 14px;
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.94);
    text-decoration: none;
    font-size: 17px;
    font-family: 'Orbitron', sans-serif;
    transition: background-color 0.16s ease, transform 0.16s ease, color 0.16s ease;
}

.mobile-nav a:hover {
    background: rgba(159, 207, 255, 0.12);
    color: #ffffff;
    transform: translateX(2px);
}

.mobile-nav select {
    padding: 10px;
    margin-top: 5px;
    font-size: 16px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.08);
    color: white;
}

.mobile-lang-label {
    margin-top: 10px;
    color: rgba(255, 255, 255, 0.66);
    font-size: 14px;
    font-family: 'Orbitron', sans-serif;
    letter-spacing: 0.02em;
}

.mobile-nav hr {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin: 10px 0;
}

.mobile-nav.open {
    left: 0;
}

/* ---------- Footer ---------- */
footer {
    margin-top: 50px;
    padding: 24px 20px;
    text-align: center;
    background:
        linear-gradient(180deg, rgba(5, 9, 15, 0.9) 0%, rgba(10, 16, 24, 0.94) 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow:
        0 -10px 24px rgba(0, 0, 0, 0.18),
        inset 0 1px 0 rgba(255, 255, 255, 0.04);
    color: rgba(255, 255, 255, 0.84);
    font-family: 'Barlow Semi Condensed', sans-serif;
}

footer p {
    margin-bottom: 8px;
    font-size: 1rem;
}

footer a {
    color: rgba(159, 207, 255, 0.96);
    text-decoration: none;
    transition: color 0.16s ease, text-shadow 0.16s ease;
}

footer a:hover {
    color: #ffffff;
    text-shadow: 0 0 10px rgba(159, 207, 255, 0.18);
}

/* ---------- Responsive ---------- */
@media screen and (max-width: 900px) {
    .nav-item {
        padding: 8px 12px;
        font-size: 14px;
    }
}

@media screen and (max-width: 700px) {
    .desktop-nav {
        display: none;
    }

    .hamburger {
        display: block;
    }

    header.navbar,
    header {
        justify-content: flex-start;
        padding: 10px 14px;
    }

    .mobile-nav {
        width: 260px;
        left: -260px;
        padding: 18px 14px;
    }

    footer {
        padding: 20px 14px;
    }

    footer p,
    footer a {
        font-size: 0.95rem;
    }
}