/* ==============================================
   AEROFIELD — NAVBAR
   Fixed glassmorphism navigation bar.
   ============================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0 clamp(16px, 4vw, 48px);
    backdrop-filter: blur(20px) saturate(1.5);
    -webkit-backdrop-filter: blur(20px) saturate(1.5);
    background: var(--navbar-bg);
    border-bottom: 1px solid var(--border-subtle);
    transition: background var(--ease-default);
}

.navbar-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--navbar-height);
}

/* --- Logo --- */
.nav-logo {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
}

.nav-logo-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--glow-amber) 0%, var(--glow-copper) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px rgba(212, 160, 74, 0.3);
    padding: 8px;
}

.nav-logo-icon svg {
    width: 26px;
    height: 26px;
}

.nav-logo-text {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 20px;
    letter-spacing: 2px;
    background: linear-gradient(135deg, var(--glow-amber) 0%, #e8c985 50%, var(--glow-copper) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Motto (center) --- */
.nav-motto {
    font-family: var(--font-ui);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--text-muted);
}

/* --- Links (right) --- */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-link {
    font-family: var(--font-ui);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--space-sm) var(--space-md);
    border-radius: 8px;
    transition: all 0.25s ease;
}

.nav-link:hover {
    color: var(--glow-amber);
    background: rgba(212, 160, 74, 0.06);
}

.nav-link--active {
    color: var(--glow-amber);
}

/* --- Locked nav items --- */
.nav-link--locked {
    cursor: not-allowed;
    opacity: 0.45;
    position: relative;
}
.nav-link--locked:hover {
    color: var(--text-secondary);
    background: none;
}

/* --- BTC Seed Fund button --- */
.nav-btc {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 18px;
    border-radius: 10px;
    border: 1px solid rgba(247, 147, 26, 0.25);
    background: rgba(247, 147, 26, 0.06);
    color: var(--glow-btc);
    font-family: var(--font-ui);
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.25s ease;
    text-decoration: none;
}

.nav-btc:hover {
    background: rgba(247, 147, 26, 0.12);
    box-shadow: 0 0 20px rgba(247, 147, 26, 0.15);
}

.nav-btc svg {
    width: 16px;
    height: 16px;
}