/* ============================
   OMG CLUB — DESIGN SYSTEM
   ============================ */

:root {
    /* Colors - Dark Luxury Palette */
    --bg-dark: #0a0a0f;
    --bg-section: #0e0e14;
    --bg-card: #14141e;
    --bg-card-hover: #1a1a28;
    --bg-glass: rgba(20, 20, 30, 0.85);
    
    --gold-50: #fff9e6;
    --gold-100: #fef0c7;
    --gold-200: #fedf89;
    --gold-300: #fec84b;
    --gold-400: #fdb022;
    --gold-500: #f79009;
    --gold-600: #dc6803;
    --gold-primary: #d4a853;
    --gold-light: #e8c87a;
    --gold-dark: #b8922f;
    
    --text-primary: #f0ece4;
    --text-secondary: #a09b8c;
    --text-muted: #6b6760;
    --text-dark: #0a0a0f;
    
    --accent-blue: #4a90d9;
    --accent-purple: #7c5cbf;
    --accent-emerald: #34d399;
    --accent-rose: #f472b6;
    
    --border-subtle: rgba(212, 168, 83, 0.12);
    --border-gold: rgba(212, 168, 83, 0.3);
    
    /* Typography */
    --font-display: 'EB Garamond', serif;
    --font-accent: 'EB Garamond', serif;
    --font-body: 'Be Vietnam Pro', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Colors - Brand Identity (Red - Gold - Blue) */
    --brand-red: #c8102e;
    --brand-gold: #ffd700;
    --brand-gold-dark: #b8860b;
    --brand-blue: #0057b7;
    --brand-orange: #ffa500; /* Infinity color */
    
    --fire-red: var(--brand-red);
    --fire-gold: var(--brand-gold);
    --patriotic-red: var(--brand-red);
    --patriotic-blue: var(--brand-blue);
    
    /* Spacing */
    --section-padding: clamp(80px, 12vh, 140px);
    --container-width: 1200px;
    --gap: clamp(16px, 2vw, 32px);
    
    /* Effects */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-lg: 0 16px 64px rgba(0,0,0,0.5);
    --shadow-gold: 0 8px 32px rgba(212, 168, 83, 0.15);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 clamp(20px, 4vw, 40px);
}

.section {
    padding: var(--section-padding) 0;
    position: relative;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* Selection */
::selection {
    background: var(--gold-primary);
    color: var(--bg-dark);
}

/* ============================
   PRELOADER
   ============================ */
#preloader {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader-inner { text-align: center; }

.preloader-logo {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    background: linear-gradient(135deg, var(--gold-light), var(--gold-primary), var(--gold-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: preloaderPulse 1.5s ease-in-out infinite;
}

.preloader-bar {
    width: 120px;
    height: 3px;
    background: rgba(212, 168, 83, 0.15);
    border-radius: 2px;
    margin: 20px auto 0;
    overflow: hidden;
}

.preloader-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--gold-primary), var(--gold-light));
    border-radius: 2px;
    animation: preloaderFill 1.8s ease forwards;
}

@keyframes preloaderPulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

@keyframes preloaderFill {
    0% { width: 0%; }
    100% { width: 100%; }
}

/* ============================
   NAVBAR
   ============================ */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 12px 0;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 clamp(20px, 4vw, 40px);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.brand-logo {
    height: 130px; 
    width: 130px;
    object-fit: cover; /* Phóng lớn để sát mép */
    padding: 0; /* Xóa padding để logo to ra sát mép */
    background: #fff;
    border-radius: 50%;
    border: 4px solid var(--brand-gold);
    box-shadow: 
        0 0 30px rgba(255, 215, 0, 0.5), 
        inset 0 0 20px rgba(255, 215, 0, 0.4); 
    filter: brightness(1.05) contrast(1.1);
    transition: all 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 10;
    cursor: pointer;
}

.nav-logo:hover .brand-logo {
    animation: logoSlide 2s infinite alternate cubic-bezier(0.45, 0, 0.55, 1);
    filter: brightness(1.1) contrast(1.1) drop-shadow(0 0 50px rgba(255, 215, 0, 0.6));
}

@keyframes logoSlide {
    0% { transform: translateX(-20px) scale(1.15); } /* Phóng lớn sát mép */
    100% { transform: translateX(20px) scale(1.15); }
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.03em;
    position: relative;
    padding: 4px 0;
    transition: var(--transition);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0;
    width: 0; height: 1.5px;
    background: var(--gold-primary);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--gold-light);
}

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

.nav-cta {
    background: linear-gradient(135deg, var(--brand-red), var(--brand-gold), var(--brand-blue));
    color: #fff !important;
    padding: 10px 24px !important;
    border-radius: 50px;
    font-weight: 700 !important;
    font-size: 0.85rem !important;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 15px rgba(200, 16, 46, 0.3);
    transition: all 0.4s ease;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(200, 16, 46, 0.5);
    filter: brightness(1.1);
    color: #fff !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gold-primary);
    transition: var(--transition);
    border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(30px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-slow);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-links {
    list-style: none;
    text-align: center;
}

.mobile-links li {
    margin: 24px 0;
    transform: translateY(20px);
    opacity: 0;
    transition: var(--transition-slow);
}

.mobile-menu.active .mobile-links li {
    transform: translateY(0);
    opacity: 1;
}

.mobile-links li:nth-child(1) { transition-delay: 0.1s; }
.mobile-links li:nth-child(2) { transition-delay: 0.15s; }
.mobile-links li:nth-child(3) { transition-delay: 0.2s; }
.mobile-links li:nth-child(4) { transition-delay: 0.25s; }
.mobile-links li:nth-child(5) { transition-delay: 0.3s; }
.mobile-links li:nth-child(6) { transition-delay: 0.35s; }

.mobile-links a {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: var(--transition);
}

.mobile-links a:hover {
    color: var(--gold-primary);
}

.mobile-cta {
    display: inline-block;
    padding: 12px 36px;
    border: 1px solid var(--gold-primary);
    color: var(--gold-primary) !important;
    border-radius: 100px;
    font-family: var(--font-body) !important;
    font-size: 1rem !important;
    font-weight: 600 !important;
    margin-top: 10px;
}

/* ============================
   HERO SECTION
   ============================ */
.hero {
    min-height: 100vh;
    padding-top: 180px; /* Tăng padding để không bị chồng lên header */
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 60% at 50% 40%, rgba(212, 168, 83, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 20% 80%, rgba(74, 144, 217, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse 60% 50% at 80% 20%, rgba(124, 92, 191, 0.05) 0%, transparent 50%),
        linear-gradient(180deg, var(--bg-dark) 0%, rgba(14, 14, 20, 0.95) 50%, var(--bg-dark) 100%);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(212, 168, 83, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(212, 168, 83, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 30%, transparent 70%);
}

.hero-particles {
    position: absolute;
    inset: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    padding: 0 20px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    border: 1px solid var(--border-gold);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gold-primary);
    background: rgba(212, 168, 83, 0.05);
    margin-bottom: 40px;
}

.badge-dot {
    width: 6px; height: 6px;
    background: var(--gold-primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3.5rem, 10vw, 7.5rem);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.title-line {
    display: block;
}

.title-word {
    display: inline-block;
    margin: 0 8px;
    opacity: 0;
    transform: translateY(40px);
    animation: titleReveal 0.8s ease forwards;
}

.title-word:nth-child(1) { animation-delay: 0.3s; }
.title-word:nth-child(2) { animation-delay: 0.5s; }
.title-line:nth-child(2) .title-word { animation-delay: 0.7s; }

.title-word.accent {
    background: linear-gradient(135deg, var(--gold-light), var(--gold-primary), var(--gold-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@keyframes titleReveal {
    to { opacity: 1; transform: translateY(0); }
}

.hero-tagline {
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-weight: 400;
}

.hero-tagline em {
    color: var(--gold-primary);
    font-style: italic;
}

.hero-desc {
    font-size: clamp(0.9rem, 1.2vw, 1.05rem);
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--brand-red), var(--brand-blue));
    color: #fff;
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--brand-blue), var(--brand-red));
    box-shadow: 0 10px 30px rgba(0, 87, 183, 0.3);
    transform: translateY(-2px);
}

.btn-outline {
    border: 1px solid var(--border-gold);
    color: var(--gold-primary);
    background: transparent;
}

.btn-outline:hover {
    background: rgba(212, 168, 83, 0.1);
    border-color: var(--gold-primary);
    transform: translateY(-2px);
}

.btn-tier {
    width: 100%;
    justify-content: center;
    padding: 14px 24px;
    border: 1px solid var(--border-gold);
    color: var(--gold-primary);
    background: transparent;
    border-radius: var(--radius-md);
}

.btn-tier:hover {
    background: rgba(212, 168, 83, 0.1);
    transform: translateY(-2px);
}

.btn-gold {
    background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
    color: var(--bg-dark);
    padding: 14px 36px;
    border-radius: 100px;
    font-weight: 700;
}

.btn-gold:hover {
    background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
    box-shadow: var(--shadow-gold);
    transform: translateY(-2px);
}

.btn-submit {
    width: 100%;
    justify-content: center;
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
    color: var(--bg-dark);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
}

.btn-submit:hover {
    background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
    box-shadow: var(--shadow-gold);
    transform: translateY(-2px);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.stat { text-align: center; }

.stat-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gold-primary);
}

.stat-suffix {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--gold-primary);
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-gold);
}

/* Hero Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--gold-primary), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); }
    100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

/* ============================
   SECTION HEADERS
   ============================ */
.section-label {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold-primary);
    padding: 6px 16px;
    border: 1px solid var(--border-gold);
    border-radius: 100px;
    margin-bottom: 20px;
}

.section-label.light {
    color: var(--gold-light);
    border-color: rgba(232, 200, 122, 0.3);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-title em {
    font-style: italic;
    color: var(--gold-primary);
}

.section-title.light {
    color: var(--text-primary);
}

.section-title.light em {
    color: var(--gold-light);
}

.section-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================
   MARQUEE
   ============================ */
.marquee-section {
    padding: 24px 0;
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    overflow: hidden;
    background: var(--bg-section);
}

.marquee-track {
    display: flex;
    overflow: hidden;
}

.marquee-content {
    display: flex;
    align-items: center;
    gap: 40px;
    animation: marquee 30s linear infinite;
    white-space: nowrap;
}

.marquee-content span {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.marquee-dot {
    color: var(--gold-primary) !important;
    font-size: 0.8rem !important;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ============================
   ABOUT SECTION
   ============================ */
.about {
    background: var(--bg-section);
}

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

.about-visual {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-orbit {
    position: relative;
    width: 300px;
    height: 300px;
}

.orbit-ring {
    position: absolute;
    border: 1px solid var(--border-subtle);
    border-radius: 50%;
    animation: orbitSpin 20s linear infinite;
}

.ring-1 {
    inset: 0;
    border-color: rgba(212, 168, 83, 0.15);
}

.ring-2 {
    inset: 40px;
    border-color: rgba(212, 168, 83, 0.1);
    animation-direction: reverse;
    animation-duration: 15s;
}

.ring-3 {
    inset: 80px;
    border-color: rgba(212, 168, 83, 0.2);
    animation-duration: 10s;
}

@keyframes orbitSpin {
    to { transform: rotate(360deg); }
}

.orbit-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-card-stack {
    position: absolute;
    width: 100%;
    height: 100%;
}

.about-card {
    position: absolute;
    padding: 16px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    animation: floatCard 6s ease-in-out infinite;
}

.card-icon { font-size: 1.3rem; }

.card-1 { top: 10%; left: -10%; animation-delay: 0s; }
.card-2 { top: 5%; right: -5%; animation-delay: 1.5s; }
.card-3 { bottom: 15%; left: -15%; animation-delay: 3s; }
.card-4 { bottom: 5%; right: -10%; animation-delay: 4.5s; }

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.about-content .section-title {
    text-align: left;
    padding-top: 10px; /* Thêm padding để tránh overlap */
}

.about-text {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-features {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.feature {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.feature-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: rgba(212, 168, 83, 0.08);
    border: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold-primary);
}

.feature strong {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.feature span {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* ============================
   PILLARS SECTION
   ============================ */
.pillars-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.pillar-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.pillar-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gold-primary), var(--gold-light));
    opacity: 0;
    transition: var(--transition);
}

.pillar-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-gold);
    box-shadow: var(--shadow-gold);
}

.pillar-card:hover::before {
    opacity: 1;
}

.pillar-card.featured {
    background: linear-gradient(135deg, rgba(212, 168, 83, 0.08), rgba(212, 168, 83, 0.02));
    border-color: var(--border-gold);
}

.pillar-card.featured::before {
    opacity: 1;
}

.pillar-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 800;
    color: rgba(212, 168, 83, 0.08);
    position: absolute;
    top: 12px;
    right: 16px;
    line-height: 1;
}

.pillar-icon-wrap {
    margin-bottom: 16px;
}

.pillar-icon {
    font-size: 2.5rem;
}

.pillar-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--gold-light);
}

.pillar-card p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.pillar-features {
    list-style: none;
    text-align: left;
}

.pillar-features li {
    font-size: 0.78rem;
    color: var(--text-muted);
    padding: 6px 0;
    border-top: 1px solid var(--border-subtle);
    position: relative;
    padding-left: 16px;
}

.pillar-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--gold-primary);
    font-size: 0.7rem;
}

/* ============================
   MEMBERSHIP SECTION
   ============================ */
.membership {
    background: var(--bg-section);
}

.membership-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.member-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition);
}

.member-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-gold);
}

.member-card.gold-card {
    border-color: var(--gold-primary);
    background: linear-gradient(135deg, rgba(212, 168, 83, 0.06) 0%, var(--bg-card) 100%);
    box-shadow: var(--shadow-gold);
}

.popular-badge {
    position: absolute;
    top: -1px; left: 50%;
    transform: translateX(-50%);
    padding: 6px 20px;
    background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
    color: var(--bg-dark);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.member-tier {
    text-align: center;
    margin-bottom: 24px;
}

.tier-badge {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

.member-tier h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
}

.member-tier.silver h3 { color: #c0c0c0; }
.member-tier.gold h3 { color: var(--gold-primary); }
.member-tier.platinum h3 { color: #a8d8ea; }

.member-price {
    text-align: center;
    padding: 20px 0;
    margin-bottom: 24px;
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.price-amount {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 800;
    color: var(--gold-primary);
}

.price-unit {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-left: 4px;
}

.member-benefits {
    list-style: none;
    flex-grow: 1;
    margin-bottom: 28px;
}

.member-benefits li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.member-benefits li.disabled {
    opacity: 0.4;
}

.check { color: var(--accent-emerald); font-weight: bold; }
.cross { color: var(--text-muted); }

/* Founding Banner */
.founding-banner {
    background: linear-gradient(135deg, rgba(212, 168, 83, 0.1), rgba(212, 168, 83, 0.03));
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-xl);
    padding: 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.founding-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--gold-primary);
    margin-bottom: 12px;
}

.founding-content h3 {
    font-family: var(--font-display);
    font-size: 1.6rem;
    margin-bottom: 12px;
}

.founding-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

.founding-slots {
    text-align: center;
    flex-shrink: 0;
}

.slots-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.slots-number {
    font-family: var(--font-display);
    font-size: 5rem;
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.slots-total {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ============================
   EXPERIENCES SECTION
   ============================ */
.exp-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.exp-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.exp-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-gold);
    box-shadow: var(--shadow-md);
}

.exp-card.exp-large {
    grid-column: span 2;
}

.exp-visual {
    height: 180px;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.exp-large .exp-visual {
    height: 220px;
}

.exp-emoji {
    font-size: 4rem;
    filter: drop-shadow(0 4px 20px rgba(0,0,0,0.3));
    animation: floatEmoji 4s ease-in-out infinite;
}

@keyframes floatEmoji {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-8px) scale(1.05); }
}

.exp-content {
    padding: 24px;
}

.exp-tag {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gold-primary);
    background: rgba(212, 168, 83, 0.1);
    padding: 4px 12px;
    border-radius: 100px;
    margin-bottom: 12px;
}

.exp-content h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.exp-content p {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ============================
   WHY JOIN SECTION
   ============================ */
.why-join {
    background: var(--bg-section);
}

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

.why-items {
    margin-top: 36px;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.why-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.why-num {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--gold-primary);
    opacity: 0.4;
    flex-shrink: 0;
    width: 40px;
}

.why-item h4 {
    font-size: 1rem;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.why-item p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.why-visual {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.quote-card {
    background: linear-gradient(135deg, rgba(212, 168, 83, 0.08), rgba(212, 168, 83, 0.02));
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    position: relative;
}

.quote-mark {
    font-family: var(--font-display);
    font-size: 5rem;
    color: var(--gold-primary);
    opacity: 0.3;
    line-height: 1;
    position: absolute;
    top: 16px;
    left: 24px;
}

.quote-card p {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-style: italic;
    line-height: 1.4;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.quote-author {
    font-size: 0.85rem;
    color: var(--gold-primary);
}

.value-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.value-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 20px 12px;
    text-align: center;
    transition: var(--transition);
}

.value-card:hover {
    border-color: var(--border-gold);
    transform: translateY(-3px);
}

.value-icon {
    font-size: 1.5rem;
    display: block;
    margin-bottom: 8px;
}

.value-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

/* ============================
   FAQ SECTION
   ============================ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border-subtle);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    transition: var(--transition);
    cursor: pointer;
}

.faq-question:hover {
    color: var(--gold-primary);
}

.faq-icon {
    width: 28px;
    height: 28px;
    position: relative;
    flex-shrink: 0;
}

.faq-icon span {
    position: absolute;
    background: var(--gold-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.faq-icon span:first-child {
    width: 16px;
    height: 2px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.faq-icon span:last-child {
    width: 2px;
    height: 16px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.faq-item.active .faq-icon span:last-child {
    transform: translate(-50%, -50%) rotate(90deg);
    opacity: 0;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding-bottom: 24px;
}

.faq-answer p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================
   JOIN SECTION
   ============================ */
.join {
    background: var(--bg-dark);
    overflow: hidden;
}

.join-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 60% at 30% 50%, rgba(212, 168, 83, 0.06) 0%, transparent 60%);
}

.join-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.join-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.7;
}

.join-trust {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.trust-item svg {
    color: var(--gold-primary);
    flex-shrink: 0;
}

/* Form */
.join-form-wrap {
    position: relative;
}

.join-form {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 40px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    letter-spacing: 0.03em;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    transition: var(--transition);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--gold-primary);
    box-shadow: 0 0 0 3px rgba(212, 168, 83, 0.1);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23a09b8c' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    cursor: pointer;
}

.form-group select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-success {
    position: absolute;
    inset: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.95);
    transition: var(--transition-slow);
}

.form-success.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

.success-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.form-success h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--gold-primary);
    margin-bottom: 12px;
}

.form-success p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* ============================
   FOOTER
   ============================ */
.footer {
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-section);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: baseline;
    gap: 6px;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
}

.social-link:hover {
    border-color: var(--gold-primary);
    color: var(--gold-primary);
    background: rgba(212, 168, 83, 0.08);
}

.footer-links h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-links a {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    transition: var(--transition);
}

.footer-brand-logo {
    height: 160px;
    width: 160px;
    object-fit: contain;
    padding: 12px;
    background: #fff;
    border-radius: 50%;
    border: 4px solid var(--brand-gold);
    box-shadow: 0 0 40px rgba(255, 215, 0, 0.4);
    transition: var(--transition);
}

.footer-brand-logo:hover {
    transform: scale(1.05);
    box-shadow: 0 0 60px rgba(255, 215, 0, 0.6);
}

.marquee-content span {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    background: linear-gradient(135deg, var(--text-muted), var(--brand-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-bottom p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================
   ANIMATIONS
   ============================ */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

[data-animate="fade-right"] {
    transform: translateX(-30px);
}

[data-animate="fade-left"] {
    transform: translateX(30px);
}

[data-animate].visible {
    opacity: 1;
    transform: translate(0, 0);
}

/* ============================
   MANIFESTO SECTION
   ============================ */
.manifesto {
    background: var(--bg-dark);
}

.manifesto-card {
    background: linear-gradient(135deg, rgba(212, 168, 83, 0.12), rgba(212, 168, 83, 0.05));
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-xl);
    padding: 80px 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.manifesto-card::before {
    content: '"';
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-display);
    font-size: 15rem;
    color: var(--gold-primary);
    opacity: 0.05;
}

.manifesto-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.3em;
    color: var(--gold-primary);
    margin-bottom: 32px;
}

.manifesto-quote {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: 32px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.manifesto-quote em {
    color: var(--gold-primary);
    font-style: italic;
}

.manifesto-text {
    max-width: 800px;
    margin: 0 auto 40px;
}

.manifesto-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.author-info strong {
    display: block;
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--gold-light);
}

.author-info span {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .manifesto-card {
        padding: 50px 30px;
    }
}

/* Custom styles for better typography in philosophy sections */
.about-text strong {
    color: var(--gold-light);
    font-weight: 600;
}

/* ============================
   PATRIOTIC & FIRE STYLES
   ============================ */
.dragon-text {
    background: linear-gradient(135deg, var(--brand-gold) 0%, var(--brand-red) 50%, var(--brand-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 15px rgba(200, 16, 46, 0.3));
    font-weight: 950 !important;
}

.pulse-red {
    background: linear-gradient(135deg, var(--brand-red), var(--brand-orange)) !important;
    box-shadow: 0 0 12px var(--brand-red);
}

.red-glow {
    color: var(--brand-red) !important;
    background: rgba(200, 16, 46, 0.1) !important;
}

.gold-glow {
    color: var(--brand-gold) !important;
    background: rgba(255, 213, 0, 0.1) !important;
    border: 1px solid rgba(255, 215, 0, 0.2);
}

.btn-epic {
    border: none;
    background: linear-gradient(135deg, var(--brand-gold), var(--brand-red), var(--brand-blue));
    color: #fff;
    padding: 16px 40px;
    font-family: var(--font-display);
    font-weight: 900;
    font-size: 1.15rem;
    letter-spacing: 0.12em;
    box-shadow: 0 10px 40px rgba(200, 16, 46, 0.4);
    border-radius: 12px;
}

.btn-epic:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 15px 40px rgba(200, 16, 46, 0.5);
}

/* Vision Section */
.vision {
    background: linear-gradient(180deg, var(--bg-dark) 0%, #1a0505 100%); /* Hơi ám đỏ nhẹ */
}

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

.vision-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
}

.vision-points {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.point {
    display: flex;
    gap: 16px;
    align-items: center;
}

.point-num {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--fire-gold);
    opacity: 0.6;
}

.point p {
    font-size: 0.95rem;
    color: var(--text-primary);
}

.vision-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-gold);
}

.img-premium {
    width: 100%;
    transition: transform 0.5s ease;
}

.vision-image:hover .img-premium {
    transform: scale(1.05);
}

.vn-map-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at center, transparent, rgba(0,0,0,0.4));
}

.svg-vn-map {
    height: 90%;
    opacity: 0.8;
}

.city-dot.pulse {
    animation: cityPulse 2s infinite;
}

@keyframes cityPulse {
    0% { r: 5; opacity: 1; }
    100% { r: 15; opacity: 0; }
}

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 1024px) {
    .pillars-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .about-grid,
    .why-grid,
    .join-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-visual {
        min-height: 350px;
    }
    
    .founding-banner {
        flex-direction: column;
        text-align: center;
        padding: 36px;
    }
}

@media (max-width: 768px) {
    .nav-links, .nav-cta {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .pillars-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .membership-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .exp-grid {
        grid-template-columns: 1fr;
    }
    
    .exp-card.exp-large {
        grid-column: span 1;
    }
    
    .hero-stats {
        gap: 24px;
    }
    
    .stat-divider {
        display: none;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .value-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .pillars-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-badge {
        font-size: 0.65rem;
        padding: 6px 14px;
    }
    
    .join-form {
        padding: 24px;
    }
}

/* ============================
   PARTICLE STYLES
   ============================ */
.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--gold-primary);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat linear infinite;
}

@keyframes particleFloat {
    0% {
        opacity: 0;
        transform: translateY(0) scale(0);
    }
    10% {
        opacity: 0.6;
        transform: scale(1);
    }
    90% {
        opacity: 0.2;
    }
    100% {
        opacity: 0;
        transform: translateY(-100vh) scale(0);
    }
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: rgba(212, 168, 83, 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(212, 168, 83, 0.5);
}