/* ========================================
   Header – Floating Glass Capsule
   ======================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 2rem;
    pointer-events: none;
    transition: padding 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-header.scrolled {
    padding: 0.625rem 2rem;
}

/* ---- Capsule ---- */
.nav {
    pointer-events: auto;
    display: flex;
    align-items: center;
    max-width: 1080px;
    margin: 0 auto;
    height: 52px;
    padding: 0 0.625rem 0 1.25rem;
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 100px;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06),
                inset 0 1px 0 rgba(255, 255, 255, 0.6);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-header.scrolled .nav {
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08),
                inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border-color: rgba(221, 225, 230, 0.5);
}

/* ---- Logo ---- */
.nav-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    z-index: 10;
}

.logo-img {
    width: 110px;
    height: 38px;
    object-fit: contain;
}

/* ---- Links ---- */
.nav-links {
    display: flex;
    align-items: center;
    gap: 0;
    margin: 0 auto;
}

.nav-link {
    position: relative;
    padding: 0.375rem 0.6rem;
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-silver-600);
    transition: color 0.2s ease;
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--color-dark);
}

.nav-link.active {
    color: var(--color-primary);
    font-weight: 600;
}

/* Active dot indicator */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scale(0);
    width: 4px;
    height: 4px;
    background: var(--color-primary);
    border-radius: 50%;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link.active::after {
    transform: translateX(-50%) scale(1);
}

/* ---- CTA ---- */
.nav-actions {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 1rem;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-white);
    background: var(--color-primary);
    border-radius: 100px;
    transition: all 0.2s ease;
}

.nav-cta:hover {
    background: var(--color-primary-light);
    box-shadow: 0 2px 12px rgba(27, 79, 149, 0.25);
}

/* ---- Mobile Toggle ---- */
.nav-toggle {
    display: none;
    z-index: 10;
    color: var(--color-dark);
    padding: 0.375rem;
    border-radius: 50%;
    transition: background 0.2s ease;
}

.nav-toggle:hover {
    background: rgba(0, 0, 0, 0.04);
}

/* ---- Backdrop ---- */
.nav-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 5;
    opacity: 0;
    pointer-events: auto;
    transition: opacity 0.3s ease;
}

.nav-backdrop.visible {
    display: block;
    opacity: 1;
}

/* ============================
   Responsive
   ============================ */

@media (max-width: 1024px) {
    .site-header {
        padding: 0.75rem 1rem;
    }

    .site-header.scrolled {
        padding: 0.5rem 1rem;
    }

    .nav {
        border-radius: 16px;
        height: 48px;
        padding: 0 0.5rem 0 1rem;
    }

    /* Slide-in side panel */
    .nav-links {
        position: fixed;
        top: 0;
        right: -300px;
        width: 280px;
        height: 100vh;
        height: 100dvh;
        background: rgba(255, 255, 255, 0.97);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        flex-direction: column;
        justify-content: center;
        align-items: flex-start;
        gap: 0.25rem;
        padding: 3rem 2rem;
        margin: 0;
        border-radius: 0;
        box-shadow: -8px 0 32px rgba(0, 0, 0, 0.08);
        transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 15;
    }

    .nav-links.open {
        right: 0;
    }

    .nav-links .nav-link {
        font-size: var(--font-size-lg);
        font-weight: 500;
        padding: 0.625rem 0;
        width: 100%;
    }

    .nav-links .nav-link::after {
        display: none;
    }

    .nav-links .nav-link.active {
        font-weight: 700;
    }

    .nav-actions { display: none; }
    .nav-toggle  { display: flex; }
}

@media (max-width: 640px) {
    .site-header {
        padding: 0.625rem 0.75rem;
    }

    .nav {
        border-radius: 14px;
        height: 46px;
    }

    .logo-img {
        width: 90px;
        height: 32px;
    }

    .nav-links {
        width: 260px;
        right: -280px;
        padding: 2.5rem 1.5rem;
    }
}