.header {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1200px;
    padding: 8px 18px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 50px;
    background: transparent;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
}

.nav {
    display: flex;
    gap: 24px;
}

.nav a {
    color: #fff;
    font-weight: 500;
    opacity: 0.85;
    transition: opacity 0.2s;
    font-size: 18px;
}

.nav a:hover {
    opacity: 1;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.burger {
    cursor: pointer;
}

/* =========================
   Buttons
========================= */
.btn {
    display: inline-block;
    font-weight: 600;
    border-radius: 25px;
    white-space: nowrap;
    transition: all 0.3s ease;
}

.btn.small {
    padding: 6px 14px;
    font-size: 18px;
    background: white;
    color: #000;
}

.btn.small:hover {
    background: #0052D4;
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(102,168,243,0.6);
}

.btn.large {
    padding: 14px 30px;
    font-size: 18px;
    background: linear-gradient(90deg, #66A8F3, #4364F7, #0052D4);
    color: white;
    box-shadow: 0 0 20px rgba(102,168,243,0.4);
    display: block;
    margin: 0 auto;
    text-align: center;
    width: fit-content;
}

.btn.large:hover {
    transform: scale(1.08);
    box-shadow: 0 0 30px rgba(102,168,243,0.8);
}

/* =========================
   Hero
========================= */