/* Navigation Styles */

/* เอาลูกศร dropdown toggle ออก */
.navbar-nav .dropdown-toggle::after {
    display: none !important;
}

.navbar-toggler .toggler-text {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    color: #fff;
    text-align: center;
    line-height: 1;
    display: none;
}

.navbar-brand img {
    display: block;
}

.navbar-toggler {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    display: none !important;
    border: none !important;
    background: transparent !important;
    box-shadow: none !important;
    outline: none !important;
    padding: 0;
}

.navbar-custom p.ms-2 {
    color: #ffffff;
    font-family: 'BUTTERSHINE';
    font-size: 30px;
    margin: 0;
    letter-spacing: 2px;
}

/* สี navbar ตอนอยู่หน้า Menu */
.page-menu .navbar-custom.scrolled {
    background: rgba(0, 0, 0, 0.95);
}

.dropdown-item.active {
    background-color: #ffd700;
    border-radius: 6px;
    color: #000;
}

/* ===== NAVBAR BASE =====
   ใช้ position: fixed ตลอดเพื่อไม่ให้เกิด layout reflow
   เวลา scroll ถึง 50px ที่ JS toggle class .scrolled
   ---------------------------------------------------------------- */
.navbar-custom {
    position: fixed;            /* ← เคย: absolute → fixed ตลอด ป้องกัน reflow */
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    border-radius: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, .8), rgba(0, 0, 0, 0));

    /* ระบุ property ที่ต้องการ animate เท่านั้น แทน transition: all */
    transition:
        background-color .35s cubic-bezier(.4, 0, .2, 1),
        background     .35s cubic-bezier(.4, 0, .2, 1),
        backdrop-filter .35s cubic-bezier(.4, 0, .2, 1),
        -webkit-backdrop-filter .35s cubic-bezier(.4, 0, .2, 1),
        border-radius  .35s cubic-bezier(.4, 0, .2, 1),
        box-shadow     .35s cubic-bezier(.4, 0, .2, 1),
        top            .35s cubic-bezier(.4, 0, .2, 1),
        left           .35s cubic-bezier(.4, 0, .2, 1),
        width          .35s cubic-bezier(.4, 0, .2, 1),
        padding        .35s cubic-bezier(.4, 0, .2, 1),
        opacity        .25s cubic-bezier(.4, 0, .2, 1);
}

/* ===== SCROLLED STATE (pill style) ===== */
.navbar-custom.scrolled {
    /* top: 12px; */
    left: 50%;
    width: min(1440px, 92vw);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border-radius: 9999px;
    padding: 8px 18px;
    box-shadow: 0 12px 28px rgba(0, 0, 0, .28);
}

/* ===== TRANSFORM / HIDE SYSTEM (GPU-only) ===== */
#mainNavbar.navbar-custom {
    --tx: 0;
    --ty: 0;
    transform: translate(var(--tx), var(--ty));
    will-change: transform, opacity;  /* ยกขึ้น compositing layer เลย */
}

#mainNavbar.navbar-custom.scrolled {
    --tx: -50%;
    --ty: 0;
    transform: translate(var(--tx), var(--ty));
}

#mainNavbar.navbar-custom.nav-hidden {
    --ty: -160%;
    opacity: 0;
    pointer-events: none;
}

/* มือถือ: อย่าซ่อนระหว่างเปิดเมนู */
@media (max-width: 991px) {
    #mainNavbar.navbar-custom.menu-open {
        --tx: 0;
        --ty: 0;
        opacity: 1;
        pointer-events: auto;
        transform: translate(var(--tx), var(--ty));
    }
}

/* ===== BRAND ===== */
.navbar-brand img {
    height: 80px;
    width: auto;
    margin-left: 0 !important;
}

.navbar-custom.scrolled .navbar-brand img {
    height: 80px;
}

/* ===== NAV LINKS ===== */
.navbar-nav .nav-link {
    font-family: 'Brunson';
    color: #ffffff !important;
    font-weight: 500;
    font-size: 20px;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin: 0 15px;
    position: relative;
    padding: 5px 0 !important;
    /* เฉพาะ property ที่เปลี่ยน แทน transition: all */
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #ffd700;
    transform: translateX(-50%);
    /* เฉพาะ width */
    transition: width 0.3s ease;
}

.navbar-nav .nav-link:hover:after,
.navbar-nav .nav-link.active:after {
    width: 100%;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: #ffd700 !important;
}

/* ===== DROPDOWN ===== */
.navbar .dropdown-menu {
    position: absolute;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: none;
    border-radius: 10px;
    padding: 15px;
    min-width: 200px;
}

.navbar .dropdown-item {
    color: #fff;
    font-weight: 500;
    text-align: center;
    /* เฉพาะ property ที่เปลี่ยน */
    transition: background-color 0.2s ease, color 0.2s ease;
}

.navbar .dropdown-item:hover {
    background-color: #ffd700;
    color: #000;
    border-radius: 6px;
}

.dropdown-menu[data-bs-popper] {
    top: 100%;
    left: -50px;
    margin-top: var(--bs-dropdown-spacer);
}

/* ===== HAMBURGER ICON ===== */
.navbar-toggler:focus {
    box-shadow: none;
}

.navbar-toggler-icon {
    background-image: none;
    width: 25px;
    height: 2px;
    background: #ffffff;
    position: relative;
    display: block;
    transition: background-color 0.3s ease;
}

.navbar-toggler-icon::before,
.navbar-toggler-icon::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 2px;
    background: #ffffff;
    left: 0;
    transition: transform 0.3s ease, top 0.3s ease, bottom 0.3s ease;
}

.navbar-toggler-icon::before { top: -8px; }
.navbar-toggler-icon::after  { bottom: -8px; }

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon {
    background: transparent;
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before {
    top: 0;
    transform: rotate(45deg);
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* ===== DESKTOP LAYOUT ===== */
@media (min-width: 992px) {
    #mainNavbar .container-fluid {
        justify-content: center !important;
        gap: 16px;
    }

    #mainNavbar .navbar-collapse {
        flex-grow: 1 !important;
    }

    #mainNavbar .navbar-brand img {
        margin-left: 0 !important;
    }

    #mainNavbar .navbar-nav {
        margin: 30px !important;
    }
}

@media (max-width: 1024px) {
    .navbar-nav .nav-link {
        font-size: 15px;
    }

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

/* ===== MOBILE STYLES ===== */
@media (max-width: 991px) {
    .navbar-custom {
        top: 0;
        left: 0;
        width: 100%;
        transform: none;
        border-radius: 0;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        box-shadow: none;
    }

    /* เมนูเปิด (burger) */
    .navbar-custom.menu-open {
        transform: none;
        left: 0;
        width: 100%;
        border-radius: 0;
        background: rgba(0, 0, 0, 0.95) !important;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        box-shadow: none;
    }

    .navbar-custom.menu-open .navbar-brand {
        position: absolute;
        top: 10px;
        left: 15px;
        z-index: 1050;
    }

    .navbar-custom.menu-open .navbar-toggler .toggler-text {
        display: none !important;
    }

    .navbar-custom.menu-open .navbar-toggler {
        position: absolute;
        top: 25px;
        right: 15px;
        left: auto;
        z-index: 1100;
    }

    .navbar-custom.menu-open .navbar-toggler .navbar-toggler-icon,
    .navbar-custom.menu-open .navbar-toggler .navbar-toggler-icon::before,
    .navbar-custom.menu-open .navbar-toggler .navbar-toggler-icon::after {
        width: 28px;
        height: 3px;
    }

    .navbar .dropdown-menu {
        position: static;
        float: none;
        inset: auto !important;
        transform: none !important;
        box-shadow: none;
        background: transparent;
        border: 0;
        padding: 0;
        min-width: 100%;
    }

    .navbar .dropdown-item {
        text-align: center;
        padding: 10px 16px;
    }

    .navbar-toggler {
        display: flex !important;
    }

    .navbar-toggler .toggler-text {
        display: block;
    }

    .navbar-custom .navbar-nav {
        width: 100%;
        margin: 8px 0 0;
        padding: 30px 0;
        background: transparent;
    }

    .navbar-nav {
        background: rgba(0, 0, 0, 0.9);
        padding: 20px 0;
        margin: 10px auto;
        border-radius: 8px;
        width: 200px;
    }

    .navbar-nav .nav-link {
        margin: 10px 0;
        text-align: center;
        padding: 10px 0 !important;
    }

    .navbar-custom .navbar-nav .nav-link {
        font-size: 20px;
        padding: 6px 0 !important;
        line-height: 1.2;
        margin: 4px 0;
    }

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

@media (max-width: 768px) {
    .navbar-brand img {
        height: 35px;
    }

    .navbar-custom.scrolled .navbar-brand img {
        height: 30px;
    }
}

@media (max-width: 480px) {
    .navbar-brand img {
        margin-left: 10px;
    }
}