/* ==========================================================================
   Layout — шапка, навигация, мобильное меню и подвал (index.html)
   ========================================================================== */

/* ===== Шапка / навигация ===== */
header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(14px);
    background: rgba(10, 0, 46, 0.55);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 11px;
    color: #fff;
}
.brand .mark {
    height: 28px;
    width: auto;
    display: block;
}
.brand b {
    font-family: "Unbounded";
    font-weight: 800;
    font-size: 18px;
    letter-spacing: 0.02em;
}
.brand small {
    display: block;
    font-size: 9px;
    letter-spacing: 0.32em;
    color: var(--azure);
    font-weight: 600;
    margin-top: 1px;
}
.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}
.nav-links a {
    color: rgba(255, 255, 255, 0.75);
    font-size: 14.5px;
    font-weight: 500;
    transition: 0.2s;
}
.nav-links a:hover {
    color: #fff;
}
.nav-cta {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* ===== Бургер ===== */
.burger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}
.burger span {
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: 0.3s;
}

/* ===== Мобильное меню ===== */
.mobile-menu {
    display: none;
    position: fixed;
    inset: 70px 0 0;
    background: var(--navy);
    z-index: 49;
    padding: 30px 22px;
    flex-direction: column;
    gap: 6px;
}
.mobile-menu.open {
    display: flex;
}
.mobile-menu a {
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

/* ===== Подвал ===== */
footer {
    background: var(--navy);
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 34px;
    margin-top: 0;
}
.foot-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 30px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.foot-grid h4 {
    color: #fff;
    font-family: "Unbounded";
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}
.foot-grid a {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    margin-bottom: 10px;
    transition: 0.2s;
}
.foot-grid a:hover {
    color: var(--azure);
}
.foot-about p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 14px;
    max-width: 300px;
}
.foot-bot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 26px;
    flex-wrap: wrap;
    gap: 14px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}
.foot-bot a {
    color: var(--azure);
}