/* ============================================
   NAVTHERA — Modular Navbar Component
   Brand Colors: Navy #0D2844, Teal #1A8A7D, Cyan #3EC6C0, Gold #C9A96E
   ============================================ */

/* CSS Variables for Theming */
:root {
    --navbar-bg: transparent;
    --navbar-text: #FFFFFF;
    --navbar-text-muted: rgba(255, 255, 255, 0.6);
    --navbar-text-hover: #3EC6C0;
    --navbar-logo-filter: none;
}

[data-theme="light"] {
    --navbar-bg: rgba(255, 255, 255, 0.95);
    --navbar-text: #0D2844;
    --navbar-text-muted: #5A6B7D;
    --navbar-text-hover: #1A8A7D;
}

/* ---- NAVBAR BASE ---- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--navbar-bg);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: 14px 60px;
    box-shadow: 0 2px 30px rgba(13, 40, 68, 0.08);
    --navbar-bg: rgba(255, 255, 255, 0.95);
    --navbar-text: #0D2844;
    --navbar-text-muted: #5A6B7D;
    --navbar-text-hover: #1A8A7D;
}

/* ---- NAVBAR LOGO ---- */
.navbar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: opacity 0.3s;
}

.navbar-logo:hover {
    opacity: 0.8;
}

.navbar-logo img {
    width: 62px;
    height: 62px;
    object-fit: contain;
    transition: transform 0.3s;
    border-radius: 10px;
    background: white;
    padding: 6px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.12);
}

.navbar-logo:hover img {
    transform: scale(1.1);
}

/* ---- LOGO SWAP (homepage only) ---- */
.logo-swap {
    position: relative;
    width: 44px;
    height: 44px;
    flex-shrink: 0;
}

.logo-swap img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 8px;
    transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1), transform 0.3s;
}

/* Default: white logo visible, colored hidden */
.logo-swap .logo-white { opacity: 1; }
.logo-swap .logo-color { opacity: 0; }

/* Scrolled: crossfade to colored logo */
.navbar.scrolled .logo-swap .logo-white { opacity: 0; }
.navbar.scrolled .logo-swap .logo-color { opacity: 1; }

.navbar-brand {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--navbar-text);
    transition: color 0.5s;
}

.navbar-brand small {
    display: block;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--navbar-text-hover);
    opacity: 1;
    transition: color 0.5s;
}

/* ---- NAV LINKS ---- */
.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--navbar-text);
    letter-spacing: 0.5px;
    position: relative;
    transition: color 0.3s;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--navbar-text-hover);
    transition: width 0.3s;
}

.nav-links a:hover {
    color: var(--navbar-text-hover);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-links a.active {
    color: var(--navbar-text-hover);
    font-weight: 600;
}

.nav-links a.active::after {
    width: 100%;
}

/* ---- NAV CTA ---- */
.nav-cta {
    padding: 10px 28px;
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 600;
    text-decoration: none;
    letter-spacing: 0.5px;
    background: var(--gold);
    color: var(--navy-deep);
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.nav-cta:hover {
    background: var(--gold-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(201, 169, 110, 0.4);
}

/* ---- MOBILE MENU ---- */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 5px;
    z-index: 101;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--navbar-text);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
    transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(10px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-10px) rotate(-45deg);
}

/* ---- RESPONSIVE DESIGN ---- */
@media (max-width: 1024px) {
    .navbar {
        padding: 16px 40px;
    }

    .navbar.scrolled {
        padding: 14px 40px;
    }

    .navbar-logo {
        gap: 10px;
    }

    .logo-swap {
        width: 36px;
        height: 36px;
    }

    .navbar-logo img {
        width: 50px;
        height: 50px;
    }

    .navbar-brand {
        font-size: 1.2rem;
    }

    .navbar-brand small {
        font-size: 0.58rem;
    }

    .nav-links {
        gap: 24px;
    }

    .nav-links a {
        font-size: 0.75rem;
    }

    .nav-cta {
        padding: 8px 20px;
        font-size: 0.75rem;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 12px 20px;
        position: fixed;
        flex-wrap: wrap;
    }

    .navbar.scrolled {
        padding: 12px 20px;
    }

    .navbar-logo {
        gap: 8px;
        order: 1;
    }

    .logo-swap {
        width: 32px;
        height: 32px;
    }

    .navbar-logo img {
        width: 44px;
        height: 44px;
    }

    .navbar-brand {
        font-size: 1rem;
    }

    .navbar-brand small {
        font-size: 0.52rem;
    }

    .menu-toggle {
        display: flex;
        order: 3;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        padding: 20px;
        border-bottom: 1px solid rgba(62, 198, 192, 0.1);
        width: 100%;
        order: 3;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding: 12px 0;
    }

    .nav-links li:last-child {
        border-bottom: none;
    }

    .nav-cta {
        order: 2;
        margin-left: auto;
        padding: 8px 16px;
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 10px 16px;
    }

    .navbar.scrolled {
        padding: 10px 16px;
    }

    .navbar-logo {
        gap: 6px;
    }

    .logo-swap {
        width: 28px;
        height: 28px;
    }

    .navbar-logo img {
        width: 38px;
        height: 38px;
    }

    .navbar-brand {
        font-size: 0.88rem;
    }

    .navbar-brand small {
        font-size: 0.46rem;
    }

    .nav-cta {
        display: none;
    }
}