/* ==========================================================================
   Root Variables & Base Reset
   ========================================================================== */
:root {
    /* Color Palette */
    --primary: #ffd700;
    --primary-dark: #d4af37;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --text-light: #f1f5f9;
    
    /* Effects */
    --neon-gold: 0 0 5px #ffffff, 0 0 10px #ffffff, 0 0 20px #ffd700, 0 0 40px #ffd700, 0 0 80px #b8860b;
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans KR', 'Montserrat', sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.2rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Montserrat', sans-serif;
    font-weight: 900;
    font-size: 1.6rem;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--primary-dark);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-dark);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary-dark);
}

.btn-outline {
    border: 2px solid var(--text-dark);
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
}

.btn-outline:hover {
    background: var(--text-dark);
    color: var(--bg-light) !important;
}

/* ==========================================================================
   Hero Section (Light & Bright Glassmorphism)
   ========================================================================== */
.hero-section {
    position: relative;
    min-height: 100vh;
    padding: 8rem 2rem 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-background-elements {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    background: radial-gradient(circle at top left, #ffffff, #f8fafc);
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.6;
}

.orb-1 {
    width: 450px;
    height: 450px;
    background: #ffd700;
    top: -10%;
    left: -10%;
    animation: float 12s infinite ease-in-out alternate;
}

.orb-2 {
    width: 350px;
    height: 350px;
    background: #fb923c;
    bottom: 5%;
    right: -5%;
    animation: float 10s infinite ease-in-out alternate-reverse;
}

@keyframes float {
    0% { transform: translateY(0) scale(1); }
    100% { transform: translateY(40px) scale(1.05); }
}

.hero-container {
    max-width: 1200px;
    width: 100%;
    display: flex;
    align-items: center;
    gap: 5rem;
    z-index: 1;
}

.hero-content {
    flex: 1.2;
}

.badge-glass {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    color: #d97706;
    margin-bottom: 1.5rem;
    box-shadow: var(--glass-shadow);
}

.hero-title {
    font-size: 3.8rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.text-gradient {
    background: linear-gradient(135deg, #d97706, #fbbf24);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.btn-primary {
    display: inline-block;
    background: var(--text-dark);
    color: var(--bg-white);
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    text-align: center;
    transition: var(--transition);
    width: fit-content;
    box-shadow: 0 10px 25px rgba(15, 23, 42, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(15, 23, 42, 0.3);
}

.btn-ghost {
    background: transparent;
    border: none;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    padding: 0.5rem 0;
}

.btn-ghost:hover {
    color: var(--primary-dark);
}

.wasm-result-text {
    font-size: 0.9rem;
    color: #059669;
    font-weight: 500;
    min-height: 1.5rem;
    margin-top: 0.2rem;
    margin-left: 0.5rem;
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: var(--glass-shadow);
    width: 100%;
    max-width: 420px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.card-section {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    width: 100%;
    padding: 1.5rem;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

.before-sec {
    opacity: 0.8;
}

.after-sec {
    background: var(--bg-white);
    box-shadow: 0 15px 30px rgba(255, 215, 0, 0.15);
    transform: scale(1.05);
}

.status-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    flex-shrink: 0;
}

.dot-gray { background: #94a3b8; }
.dot-gold { background: #fbbf24; box-shadow: 0 0 15px #fbbf24; }

.status-text h3 {
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 0.2rem;
}

.status-text p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.arrow-down {
    color: #94a3b8;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(5px); }
}

/* ==========================================================================
   12 Weeks Journey Section (Clean & Trustworthy)
   ========================================================================== */
.journey-section {
    padding: 8rem 2rem;
    background: var(--bg-white);
    position: relative;
    z-index: 2;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-title {
    font-size: 2.8rem;
    font-weight: 900;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.15rem;
}

.timeline-container {
    max-width: 900px;
    margin: 0 auto;
}

.timeline {
    position: relative;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e2e8f0;
    transform: translateX(-50%);
}

.timeline-card {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    width: 50%;
    padding-right: 3rem;
    position: relative;
    margin-bottom: 3rem;
}

.timeline-card.reverse {
    align-self: flex-end;
    justify-content: flex-start;
    padding-right: 0;
    padding-left: 3rem;
    margin-left: 50%;
}

.timeline-dot {
    position: absolute;
    right: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    border: 4px solid var(--bg-white);
    box-shadow: 0 0 0 2px #e2e8f0;
    z-index: 1;
    transition: var(--transition);
}

.timeline-card:hover .timeline-dot {
    transform: translateY(-50%) scale(1.3);
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.5);
    border-color: var(--primary-dark);
}

.timeline-card.reverse .timeline-dot {
    right: auto;
    left: -10px;
}

.card-content {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.03);
    width: 100%;
    transition: var(--transition);
}

.timeline-card:hover .card-content {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.card-week {
    font-weight: 800;
    color: var(--primary-dark);
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.card-title {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 800;
}

.card-text {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.7;
}

/* ==========================================================================
   The Concert Section (Dark, Neon, Dramatic)
   ========================================================================== */
@keyframes spotlight-sweep {
    0% { transform: translateX(-50%) rotate(-8deg); opacity: 0.6; }
    50% { transform: translateX(-50%) rotate(8deg); opacity: 1; }
    100% { transform: translateX(-50%) rotate(-8deg); opacity: 0.6; }
}

@keyframes neon-flicker {
    0%, 18%, 22%, 25%, 53%, 57%, 100% {
        text-shadow: var(--neon-gold);
        opacity: 1;
    }
    20%, 24%, 55% {
        text-shadow: 0 0 5px rgba(255, 255, 255, 0.2);
        opacity: 0.8;
    }
}

.concert-section {
    background: radial-gradient(circle at 50% 0%, #1e293b 0%, var(--bg-darker) 70%);
    color: var(--bg-white);
    padding: 10rem 2rem;
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 20px 50px rgba(0,0,0,0.5);
}

.spotlight {
    position: absolute;
    top: -30%;
    left: 50%;
    width: 150vw;
    height: 150vh;
    background: radial-gradient(ellipse at top, rgba(255, 215, 0, 0.15), transparent 60%);
    pointer-events: none;
    z-index: 0;
    transform-origin: top center;
    animation: spotlight-sweep 12s cubic-bezier(0.45, 0, 0.55, 1) infinite;
    mix-blend-mode: screen;
}

.concert-content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    text-align: center;
}

.neon-wrapper {
    margin-bottom: 1.5rem;
}

.neon-title {
    font-size: 4.5rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 900;
    color: #ffffff;
    text-transform: uppercase;
    text-shadow: var(--neon-gold);
    letter-spacing: 4px;
    animation: neon-flicker 4s infinite alternate;
}

.concert-subtitle {
    color: #cbd5e1;
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 5rem;
    line-height: 1.8;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    align-items: center;
}

.gallery-item {
    height: 450px;
    background-size: cover;
    background-position: center;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.6s ease;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.gallery-item:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0,0,0,0.7), 0 0 20px rgba(255,215,0,0.15);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.2) 50%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 2.5rem;
    text-align: left;
    transition: padding 0.5s cubic-bezier(0.16, 1, 0.3, 1), background 0.5s ease;
}

.gallery-item:hover .gallery-overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.1) 60%, transparent 100%);
    padding-bottom: 3.5rem;
}

.gold-overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.95) 0%, rgba(255, 215, 0, 0.2) 60%, transparent 100%);
}

.gallery-overlay h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.gold-text {
    color: var(--primary);
    text-shadow: 0 0 10px rgba(255,215,0,0.4);
}

.gallery-overlay p {
    color: #cbd5e1;
    font-size: 0.95rem;
}

.spotlight-item {
    height: 500px;
    transform: scale(1.05);
    box-shadow: 0 30px 60px rgba(0,0,0,0.6), 0 0 30px rgba(255, 215, 0, 0.15);
    z-index: 2;
    border: 1px solid rgba(255,215,0,0.2);
}

.spotlight-item:hover {
    transform: scale(1.08) translateY(-12px);
}

.spotlight-item:hover .gold-overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(255, 215, 0, 0.3) 70%, transparent 100%);
    padding-bottom: 3.5rem;
}

/* ==========================================================================
   Consultation Form Section (VIP Invitation)
   ========================================================================== */
@keyframes float-vip {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
    100% { transform: translateY(0px); }
}

@keyframes pulse-gold-btn {
    0% { transform: scale(1); box-shadow: 0 0 20px rgba(255, 215, 0, 0.2); }
    50% { transform: scale(1.02); box-shadow: 0 0 30px rgba(255, 215, 0, 0.5); }
    100% { transform: scale(1); box-shadow: 0 0 20px rgba(255, 215, 0, 0.2); }
}

.apply-section {
    background: var(--bg-darker);
    padding: 10rem 2rem;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.apply-particles {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255, 215, 0, 0.15) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.4;
}

.vip-invitation {
    position: relative;
    max-width: 650px;
    width: 100%;
    padding: 4.5rem 4rem;
    border-radius: 24px;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border: 1px solid rgba(255, 215, 0, 0.2);
    box-shadow: 0 40px 80px -20px rgba(0, 0, 0, 0.8), inset 0 0 20px rgba(255, 215, 0, 0.05);
    z-index: 1;
    transition: border-color 0.4s ease, box-shadow 0.4s ease;
    animation: float-vip 6s ease-in-out infinite;
}

/* Form Container Focus-Within Interaction */
.vip-invitation:focus-within {
    border-color: rgba(255, 215, 0, 0.5);
    box-shadow: 0 40px 100px -10px rgba(0, 0, 0, 0.95), 
                0 0 40px rgba(255, 215, 0, 0.15), 
                inset 0 0 30px rgba(255, 215, 0, 0.1);
}

.vip-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.vip-title {
    font-family: 'Montserrat', sans-serif;
    font-weight: 900;
    color: var(--primary);
    font-size: 2.2rem;
    letter-spacing: 5px;
    margin-bottom: 0.8rem;
}

.vip-desc {
    color: #94a3b8;
    font-size: 1.1rem;
}

.gold-divider {
    width: 60px;
    height: 2px;
    background: var(--primary);
    margin: 1.5rem auto 0;
    box-shadow: 0 0 10px var(--primary);
}

.vip-form {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.input-group {
    position: relative;
}

.input-group input,
.input-group textarea {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    padding: 0.8rem 0;
    color: var(--bg-white);
    font-size: 1.1rem;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

.input-group textarea {
    resize: none;
    min-height: 80px;
}

.input-group label {
    position: absolute;
    top: 0.8rem;
    left: 0;
    color: #64748b;
    pointer-events: none;
    transition: var(--transition);
    font-size: 1rem;
}

.focus-border {
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease;
    transform: translateX(-50%);
    box-shadow: 0 0 8px rgba(255, 215, 0, 0.5);
}

/* Form Floating Labels & Interactions */
.input-group input:focus ~ label,
.input-group input:not(:placeholder-shown) ~ label,
.input-group textarea:focus ~ label,
.input-group textarea:not(:placeholder-shown) ~ label {
    top: -1.2rem;
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 600;
}

.input-group input:focus ~ .focus-border,
.input-group textarea:focus ~ .focus-border {
    width: 100%;
    box-shadow: 0 0 12px rgba(255, 215, 0, 0.8), 0 -2px 10px rgba(255, 215, 0, 0.3);
}

.btn-gold-glow {
    background: linear-gradient(135deg, #d4af37, #ffd700);
    border: none;
    padding: 1.2rem;
    border-radius: 50px;
    color: var(--bg-darker);
    font-weight: 800;
    font-size: 1.15rem;
    cursor: pointer;
    margin-top: 1.5rem;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.2);
    font-family: inherit;
    animation: pulse-gold-btn 2.5s infinite ease-in-out;
}

.btn-gold-glow:hover {
    animation-play-state: paused;
    box-shadow: 0 0 35px rgba(255, 215, 0, 0.6);
    transform: translateY(-3px) scale(1.04);
}

.response-msg {
    margin-top: 1.5rem;
    text-align: center;
    font-weight: 600;
    font-size: 1rem;
    padding: 1rem;
    border-radius: 12px;
}

.response-msg.hidden {
    display: none;
}

.response-msg.success {
    color: #059669;
    background: rgba(5, 150, 105, 0.1);
    border: 1px solid rgba(5, 150, 105, 0.3);
}

.response-msg.error {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background: #000000;
    padding: 4rem 2rem;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-logo {
    font-family: 'Montserrat', sans-serif;
    font-weight: 900;
    color: var(--bg-white);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.footer-logo span {
    color: var(--primary);
}

.footer-content p {
    color: #475569;
    font-size: 0.95rem;
    line-height: 1.8;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 1024px) {
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .spotlight-item {
        transform: scale(1);
        height: 450px;
    }
    
    .spotlight-item:hover {
        transform: translateY(-10px) scale(1.02);
    }
}

@media (max-width: 992px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 3.5rem;
    }
    
    .hero-visual {
        justify-content: center;
    }
    
    .hero-actions {
        align-items: center;
    }
    
    .timeline-line {
        left: 40px;
    }
    
    .timeline-card {
        width: 100%;
        padding-left: 90px;
        padding-right: 0;
        justify-content: flex-start;
    }
    
    .timeline-card.reverse {
        margin-left: 0;
        padding-left: 90px;
    }
    
    .timeline-dot {
        left: 30px !important;
        right: auto !important;
    }
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-links {
        gap: 1.5rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero-section {
        padding-top: 10rem;
    }

    .hero-title {
        font-size: 2.8rem;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .neon-title {
        font-size: 2.8rem;
        letter-spacing: 2px;
    }

    .vip-invitation {
        padding: 3rem 2rem;
    }
    
    .vip-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.3rem;
    }
    
    .card-content {
        padding: 1.5rem;
    }
    
    .timeline-card, .timeline-card.reverse {
        padding-left: 70px;
    }
    
    .timeline-line {
        left: 25px;
    }
    
    .timeline-dot {
        left: 15px !important;
    }

    .vip-invitation {
        padding: 2.5rem 1.5rem;
    }
}
```