/* ==========================================================================
   Base Styles & Variables
   ========================================================================== */
:root {
    --primary-color: #1a1a1a;
    --secondary-color: #5c5c5c;
    --accent-color: #bfa175;
    /* Champagne Gold from Logo */
    --accent-light: #fdfaf6;
    /* Very light gold tint */
    --bg-color: #FFFFFF;
    --border-color: #EAEAEA;
    --font-heading: 'Montserrat', 'Noto Sans TC', sans-serif;
    --font-body: 'Noto Sans TC', sans-serif;
    --container-width: 1400px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    color: var(--primary-color);
    background-color: var(--bg-color);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease, opacity 0.3s ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 5%;
}

.section {
    padding: 120px 0;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: background 0.4s ease, border-bottom 0.4s ease;
}

body.admin-bar .navbar {
    top: 32px;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 25px 5%;
    transition: padding 0.4s ease;
}

.navbar.scrolled .navbar-container {
    padding: 15px 5%;
}

.logo a {
    display: block;
}

.logo img {
    height: 60px;
    width: auto;
    object-fit: contain;
}

.nav-menu>ul {
    display: flex;
    gap: 40px;
}

.nav-menu .menu {
    display: flex;
    gap: 40px;
}

.nav-menu a {
    font-size: 0.9rem;
    font-weight: 400;
    letter-spacing: 1px;
    position: relative;
}

.nav-menu li {
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

.nav-menu a:hover {
    color: var(--accent-color);
}

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

/* Dropdown Styles */
.nav-menu .has-dropdown,
.nav-menu .menu-item-has-children {
    position: relative;
    padding-bottom: 20px;
    /* To prevent losing hover */
    margin-bottom: -20px;
}

.nav-menu .dropdown,
.nav-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 15px 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    z-index: 100;
}

.nav-menu .has-dropdown:hover .dropdown,
.nav-menu .menu-item-has-children:hover .sub-menu,
.nav-menu .menu-item-has-children:focus-within .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-menu .dropdown li,
.nav-menu .sub-menu li {
    width: 100%;
}

.nav-menu .dropdown a,
.nav-menu .sub-menu a {
    display: block;
    padding: 8px 25px;
    font-size: 0.85rem;
    color: var(--secondary-color);
    letter-spacing: 1px;
}

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

.nav-menu .dropdown a:hover,
.nav-menu .sub-menu a:hover {
    color: var(--primary-color);
    background-color: var(--accent-light);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.btn-text {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    border: 0;
    background: transparent;
    padding: 0;
}

.hamburger span {
    width: 25px;
    height: 1px;
    background: var(--primary-color);
    display: block;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.hamburger.is-active span:first-child {
    transform: translateY(3.5px) rotate(45deg);
}

.hamburger.is-active span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-image {
    position: absolute;
    top: 0;
    right: 0;
    width: 60%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: -1;
}

.hero-text {
    padding-left: 10%;
    max-width: 600px;
    background: var(--bg-color);
    padding-right: 80px;
    padding-top: 80px;
    padding-bottom: 80px;
}

.sub-heading {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    letter-spacing: 4px;
    color: var(--accent-color);
    margin-bottom: 20px;
}

.main-heading {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    font-weight: 300;
    line-height: 1.2;
    margin-bottom: 30px;
}

.hero-desc {
    color: var(--secondary-color);
    margin-bottom: 50px;
    max-width: 400px;
}

.btn-outline {
    display: inline-block;
    padding: 15px 40px;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    font-size: 0.9rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background: var(--accent-color);
    color: var(--bg-color);
}

/* ==========================================================================
   Split Layout Sections (Jade & Features)
   ========================================================================== */
.split-section {
    background-color: var(--accent-light);
}

.layout-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.category-tag {
    font-size: 0.8rem;
    letter-spacing: 3px;
    color: var(--accent-color);
    display: block;
    margin-bottom: 20px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 30px;
}

.section-text {
    color: var(--secondary-color);
    margin-bottom: 40px;
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    font-size: 0.9rem;
    letter-spacing: 1px;
    color: var(--primary-color);
    border-bottom: 1px solid var(--primary-color);
    padding-bottom: 5px;
    transition: all 0.3s ease;
}

.link-arrow:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.link-arrow span {
    margin-left: 10px;
    transition: transform 0.3s ease;
}

.link-arrow:hover span {
    transform: translateX(5px);
}

.image-box img {
    aspect-ratio: 4/5;
    object-fit: cover;
}

/* ==========================================================================
   Showcase / Gem Grid
   ========================================================================== */
.section-header.center {
    text-align: center;
    margin-bottom: 80px;
}

.section-header .section-text {
    max-width: 600px;
    margin: 0 auto;
}

.gem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.gem-item {
    cursor: pointer;
}

.gem-img-wrapper {
    overflow: hidden;
    margin-bottom: 25px;
    aspect-ratio: 1/1;
}

.gem-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

.gem-item:hover .gem-img-wrapper img {
    transform: scale(1.05);
}

.gem-item:hover .gem-info h4 {
    color: var(--accent-color);
    transition: color 0.3s ease;
}

.gem-info h4 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 400;
    margin-bottom: 5px;
}

.gem-info p {
    font-size: 0.85rem;
    color: var(--secondary-color);
    letter-spacing: 1px;
}

/* ==========================================================================
   Concept Section
   ========================================================================== */
.concept-section {
    padding: 0;
}

.concept-bg {
    background: var(--primary-color);
    color: var(--bg-color);
    padding: 150px 0;
    text-align: center;
}

.concept-content {
    max-width: 700px;
    margin: 0 auto;
}

.concept-content h2 {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 300;
    margin-bottom: 30px;
    letter-spacing: 5px;
}

.concept-content p {
    color: #AAAAAA;
    font-size: 1.1rem;
    margin-bottom: 50px;
}

.btn-solid {
    display: inline-block;
    padding: 15px 40px;
    background: var(--bg-color);
    color: var(--primary-color);
    font-size: 0.9rem;
    letter-spacing: 2px;
    transition: all 0.3s ease;
}

.btn-solid:hover {
    background: var(--accent-color);
    color: var(--bg-color);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    padding: 100px 0 40px;
    background: var(--bg-color);
    border-top: 1px solid var(--border-color);
}

.footer-flex {
    display: flex;
    justify-content: space-between;
    margin-bottom: 80px;
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand .logo img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.footer-brand p {
    color: var(--secondary-color);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 80px;
}

.link-group h5 {
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 2px;
    margin-bottom: 25px;
}

.link-group ul li {
    margin-bottom: 15px;
}

.link-group a {
    color: var(--secondary-color);
    font-size: 0.75rem;
}

.link-group a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
}

.footer-bottom p {
    font-size: 0.8rem;
    color: #999;
}

.socials {
    display: flex;
    gap: 20px;
}

.socials a {
    font-size: 0.8rem;
    letter-spacing: 1px;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 1024px) {
    .hero-image {
        width: 100%;
        background-position: top center;
        background-size: contain;
    }

    .hero-text {
        padding: 50px;
        background: rgba(255, 255, 255, 0.75);
        backdrop-filter: blur(10px);
    }

    .main-heading {
        font-size: 3.5rem;
    }

    .layout-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .image-box img {
        aspect-ratio: 16/9;
    }

    .nav-menu .has-dropdown,
    .nav-menu .menu-item-has-children {
        margin-bottom: 0px;
    }
}

@media (max-width: 768px) {
    body.menu-open {
        overflow: hidden;
    }

    body.admin-bar .navbar {
        top: 46px;
    }

    .nav-menu {
        display: none;
        position: fixed;
        inset: 0;
        left: 0;
        width: 100%;
        height: 100dvh;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(8px);
        box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
        padding: 96px 5% 28px;
        z-index: 1100;
    }

    .nav-menu.is-open {
        display: block;
    }

    body.admin-bar .nav-menu {
        padding-top: 112px;
        background-color:#FFF;
    }

    .nav-menu .menu,
    .nav-menu>ul {
        flex-direction: column;
        gap: 0;
        max-height: calc(100dvh - 150px);
        overflow-y: auto;
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
        padding-right: 6px;
        scrollbar-width: thin;
        scrollbar-color: var(--accent-color) transparent;
        padding-bottom: 50px;
    }

    .nav-menu .menu::-webkit-scrollbar,
    .nav-menu>ul::-webkit-scrollbar {
        width: 6px;
    }

    .nav-menu .menu::-webkit-scrollbar-thumb,
    .nav-menu>ul::-webkit-scrollbar-thumb {
        background: var(--accent-color);
        border-radius: 999px;
    }

    .nav-menu li {
        /*border-bottom: 1px solid var(--border-color);*/
    }

    .nav-menu li:last-child {
        border-bottom: 0;
    }

    .nav-menu a {
        display: block;
        padding: 14px 5%;
    }

    .nav-menu .sub-menu,
    .nav-menu .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        border: 0;
        box-shadow: none;
        padding: 0 0 8px;
        background: transparent;
    }

    .nav-menu .sub-menu a,
    .nav-menu .dropdown a {
        padding: 8px 8% 8px 10%;
        font-size: 0.82rem;
    }

    .hamburger {
        display: flex;
        position: relative;
        z-index: 1102;
    }

    .hamburger:hover {
        background-color: transparent;
    }

    .gem-grid {
        grid-template-columns: 1fr;
    }

    .concept-content h2 {
        font-size: 2.5rem;
    }

    .footer-flex {
        flex-direction: column;
        gap: 50px;
    }

    .footer-links {
        flex-direction: column;
        gap: 40px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}