/* ══════════════════════════════════════
   RESET & ROOT
══════════════════════════════════════ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --gold:        #d4af37;
    --gold-light:  #f0d060;
    --gold-dim:    #a07c20;
    --cream:       #f5deb3;
    --dark:        #0a0804;
    --dark-mid:    #1a1208;
    --bg-intro:    #e8ddc8;
    --brown:       #8B6914;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Cormorant Garamond', Georgia, serif;
    background: var(--dark);
    color: #fff;
    overflow-x: hidden;
}

/* ══════════════════════════════════════
   HERO
══════════════════════════════════════ */
.hero {
    width: 100%;
    height: 100vh;
    min-height: 700px;
    position: relative;
    overflow: hidden;
    background:
        url("../assets/images/bg-trongdong.png") center center / cover no-repeat;
}

/* Dark brownish overlay to match cinematic look */
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        160deg,
        rgba(5,3,1,0.82) 0%,
        rgba(15,8,2,0.65) 40%,
        rgba(8,5,1,0.75) 100%
    );
    z-index: 1;
}

/* Vignette — darkens edges */
.hero-vignette {
    position: absolute;
    inset: 0;
    background: radial-gradient(
        ellipse 85% 80% at 50% 50%,
        transparent 30%,
        rgba(0,0,0,0.7) 100%
    );
    z-index: 2;
}

/* Bottom fog fade into intro section */
.hero-fog {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 180px;
    background: linear-gradient(to bottom, transparent, rgba(10,6,2,0.6) 60%, #0a0804 100%);
    z-index: 3;
}

/* ══════════════════════════════════════
   NAVBAR
══════════════════════════════════════ */
.navbar {
    position: relative;
    z-index: 20;
    width: 100%;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 60px;
    background: rgba(5, 3, 1, 0.85);
    border-bottom: 1px solid rgba(212, 175, 55, 0.25);
    backdrop-filter: blur(12px);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    height: 40px;
    width: auto;        /* giữ tỉ lệ 790:703 tự động */
    flex-shrink: 0;
    object-fit: contain;
}

.logo-text {
    font-family: 'Times New Roman', Times, serif;
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 4px;
    color: var(--gold);
    white-space: nowrap;
    text-transform: uppercase;
}

.menu {
    display: flex;
    gap: 0;
    list-style: none;
    align-items: center;
}

.menu li {
    position: relative;
}

.menu li a {
    font-family: 'Times New Roman', Times, serif;
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 1.5px;
    color: #bbb;
    padding: 0 20px;
    text-decoration: none;
    white-space: nowrap;
    display: block;
    transition: color 0.25s;
}

.menu li a:hover,
.menu li.active a {
    color: var(--gold);
}

.menu li.active a::after {
    content: '';
    position: absolute;
    bottom: -22px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: var(--gold);
}

/* ══════════════════════════════════════
   HERO CONTENT
══════════════════════════════════════ */
.hero-content {
    position: relative;
    z-index: 10;
    width: 100%;
    height: calc(100vh - 72px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding-bottom: 60px;
}

/* ── Text Box — nằm ở phía dưới hero ── */
.text-box {
    position: relative;
    z-index: 20;
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1.2s ease 0.3s, transform 1.2s ease 0.3s;
    margin-bottom: 0;
    padding: 50px 60px 0;
    width: 100%;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(5,3,1,0.5) 40%,
        rgba(5,3,1,0.75) 100%
    );
}

.sub-title {
    font-family: 'Cormorant Garamond', serif;
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 5px;
    color: #ccc;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    text-transform: uppercase;
}

.line-deco {
    color: #888;
    font-size: 14px;
}

h1 {
    font-family: 'Cinzel', serif;
    font-size: clamp(42px, 5.8vw, 80px);
    font-weight: 700;
    color: var(--gold);
    letter-spacing: 6px;
    line-height: 1.1;
    margin-bottom: 16px;
    text-shadow:
        0 0 80px rgba(212,175,55,0.7),
        0 0 160px rgba(212,175,55,0.3),
        0 3px 6px rgba(0,0,0,1);
}

.description {
    font-family: 'Cormorant Garamond', serif;
    font-size: 20px;
    font-style: italic;
    font-weight: 300;
    color: #ddd;
    letter-spacing: 1.5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
}

.deco-diamond {
    color: var(--gold);
    font-size: 11px;
    font-style: normal;
}

/* ── Scroll Indicator ── */
.scroll-indicator {
    position: absolute;
    bottom: 22px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
    color: var(--gold-dim);
    width: 26px;
    height: 26px;
    opacity: 0;
    animation: scrollBounce 2s ease-in-out infinite;
    transition: opacity 1s ease 1.8s;
}

.scroll-indicator svg {
    width: 100%;
    height: 100%;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.5; }
    50%       { transform: translateX(-50%) translateY(7px); opacity: 1; }
}

/* ══════════════════════════════════════
   LOADED STATE
══════════════════════════════════════ */
body.loaded .text-box {
    opacity: 1;
    transform: translateY(0);
}
body.loaded .scroll-indicator {
    opacity: 1;
}

/* ══════════════════════════════════════
   INTRO SECTION
══════════════════════════════════════ */
.intro-section {
    background: var(--bg-intro);
    padding: 80px 40px 90px;
    position: relative;
    overflow: hidden;
}

.intro-drum-bg {
    position: absolute;
    top: 50%;
    left: -80px;
    transform: translateY(-50%);
    width: 380px;
    height: 380px;
    pointer-events: none;
}

.intro-drum-bg.right {
    left: auto;
    right: -80px;
}

.intro-content {
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.intro-title {
    font-family: 'Cinzel', serif;
    font-size: clamp(20px, 3vw, 30px);
    font-weight: 700;
    letter-spacing: 4px;
    color: #2a1a05;
    margin-bottom: 28px;
}

.intro-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 28px;
}

.div-line {
    display: block;
    width: 80px;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--brown), transparent);
}

.div-diamond {
    color: var(--brown);
    font-size: 14px;
}

.div-diamond.small {
    font-size: 10px;
}

.intro-divider.bottom {
    margin-top: 32px;
    margin-bottom: 0;
}

.intro-text {
    font-family: 'Cormorant Garamond', serif;
    font-size: 19px;
    line-height: 1.9;
    color: #3a2a10;
    font-style: normal;
    font-weight: 400;
}

/* ══════════════════════════════════════
   SCROLLBAR
══════════════════════════════════════ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark); }
::-webkit-scrollbar-thumb { background: var(--gold-dim); border-radius: 3px; }