/* ==========================================
   NAVIGATION - Ported from ghost-site-iteration1.vercel.app
   ========================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1001;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    transition: all 0.4s var(--ease-smooth);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 1.75rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 3rem;
}

/* Logo */
.logo {
    height: 45px;
    display: block;
    transition: opacity 0.3s ease;
    flex-shrink: 0;
}

.logo:hover {
    opacity: 0.85;
}

.logo img {
    height: 100%;
    width: auto;
}

/* Menu */
.nav-menu {
    display: flex;
    gap: 2.5rem;
    list-style: none;
    align-items: center;
}

.nav-menu a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gy-midnight);
    text-decoration: none;
    transition: all 0.3s var(--ease-smooth);
    letter-spacing: 0.4px;
    position: relative;
    padding: 0.5rem 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gy-turquoise), var(--gy-turquoise-hover));
    transition: width 0.4s var(--ease-smooth);
}

.nav-menu a:hover,
.nav-menu a.active,
.nav-menu .current-menu-item > a {
    color: var(--gy-turquoise);
}

.nav-menu a:hover::after,
.nav-menu a.active::after,
.nav-menu .current-menu-item > a::after {
    width: 100%;
}

/* Contact Button */
.btn-contact {
    padding: 0.875rem 2rem;
    background: var(--gy-midnight);
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.4s var(--ease-smooth);
    letter-spacing: 0.5px;
    text-decoration: none;
    display: inline-block;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
    white-space: nowrap;
}

.btn-contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s var(--ease-smooth);
}

.btn-contact:hover {
    background: var(--gy-turquoise);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(26, 188, 156, 0.35);
}

.btn-contact:hover::before {
    left: 100%;
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1002;
    gap: 5px;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--gy-midnight);
    transition: all 0.3s var(--ease-smooth);
    transform-origin: center;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Contact link (hidden on desktop) */
.mobile-contact {
    display: none;
}

/* Nav Overlay */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s var(--ease-smooth);
    z-index: 1000;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Body lock when menu is open */
body.menu-open {
    overflow: hidden;
}

/* ==========================================
   RESPONSIVE NAV
   ========================================== */

@media (max-width: 1200px) {
    .nav-container {
        padding: 1.25rem 2rem;
        gap: 2rem;
    }

    .nav-menu {
        gap: 1.25rem;
    }

    .nav-menu a {
        font-size: 0.78rem;
    }

    .btn-contact {
        padding: 0.625rem 1.25rem;
        font-size: 0.78rem;
    }
}

@media (max-width: 1024px) {
    .nav-container {
        padding: 1rem 1.25rem;
    }

    .logo {
        height: 35px;
    }

    .hamburger {
        display: flex;
    }

    .btn-contact {
        display: none;
    }

    .mobile-contact {
        display: block;
    }

    .nav-menu {
        display: flex !important;
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        max-width: 320px;
        height: 100vh;
        height: 100dvh; /* dynamic viewport height for mobile browsers */
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 0;
        padding: 2rem;
        transition: right 0.4s var(--ease-smooth);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.1);
        z-index: 1001;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu li {
        width: 100%;
        text-align: center;
        opacity: 0;
        transform: translateX(20px);
        transition: all 0.3s var(--ease-smooth);
    }

    .nav-menu.active li {
        opacity: 1;
        transform: translateX(0);
    }

    .nav-menu.active li:nth-child(1) { transition-delay: 0.1s; }
    .nav-menu.active li:nth-child(2) { transition-delay: 0.15s; }
    .nav-menu.active li:nth-child(3) { transition-delay: 0.2s; }
    .nav-menu.active li:nth-child(4) { transition-delay: 0.25s; }
    .nav-menu.active li:nth-child(5) { transition-delay: 0.3s; }
    .nav-menu.active li:nth-child(6) { transition-delay: 0.35s; }
    .nav-menu.active li:nth-child(7) { transition-delay: 0.4s; }
    .nav-menu.active li:nth-child(8) { transition-delay: 0.45s; }

    .nav-menu a {
        display: block;
        padding: 1rem 0;
        font-size: 1.1rem;
        font-weight: 500;
        color: var(--gy-midnight);
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

    .nav-menu a::after {
        display: none;
    }

    .nav-menu li:last-child a {
        border-bottom: none;
        margin-top: 1rem;
        padding: 1rem 2rem;
        background: var(--gy-midnight);
        color: #fff;
        font-weight: 600;
    }

    .nav-menu li:last-child a:hover {
        background: var(--gy-turquoise);
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0.875rem 1rem;
    }

    .logo {
        height: 30px;
    }
}