/* ============================================
   MSM COMPANY - Apple-Style Design
   Premium F&B Group Landing Page
   ============================================ */

/* ============================================
   CSS Variables & Global Styles (Apple-inspired)
   ============================================ */
:root {
    /* Apple-style Colors */
    --primary-black: #000000;
    --primary-white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f7;
    --gray-200: #e8e8ed;
    --gray-300: #d2d2d7;
    --gray-400: #86868b;
    --gray-500: #6e6e73;
    --gray-600: #515154;
    --gray-700: #424245;
    --gray-800: #1d1d1f;
    --gray-900: #000000;
    
    /* Accent Colors */
    --accent-blue: #0071e3;
    --accent-gold: #f5a623;
    
    /* Typography - Apple San Francisco Pro */
    --font-primary: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Segoe UI', 'Noto Sans KR', sans-serif;
    --font-display: -apple-system, BlinkMacSystemFont, 'SF Pro Display', serif;
    
    /* Spacing */
    --section-padding: 100px;
    --container-max: 980px;
    --container-large: 1400px;
    
    /* Transitions - Apple-style easing */
    --transition-default: cubic-bezier(0.28, 0.11, 0.32, 1);
    --transition-smooth: all 0.5s var(--transition-default);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    color: var(--gray-800);
    background-color: var(--primary-white);
    line-height: 1.47059;
    font-size: 17px;
    letter-spacing: -0.022em;
    font-weight: 400;
}

/* ============================================
   Loading Screen
   ============================================ */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-white);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.6s var(--transition-default);
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    text-align: center;
}

.logo-loader {
    font-size: 56px;
    font-weight: 600;
    color: var(--gray-800);
    letter-spacing: -0.05em;
}

.loading-text {
    color: var(--gray-400);
    font-size: 12px;
    letter-spacing: 0.01em;
    margin-top: 16px;
    font-weight: 400;
}

/* ============================================
   Navigation (Apple-style)
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 44px;
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    z-index: 9999;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.8);
}

.nav-container {
    max-width: var(--container-large);
    margin: 0 auto;
    padding: 0 22px;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    cursor: pointer;
    gap: 6px;
}

.logo-main {
    font-size: 21px;
    font-weight: 600;
    color: var(--gray-800);
    letter-spacing: -0.02em;
}

.logo-sub {
    font-size: 10px;
    letter-spacing: 0.04em;
    color: var(--gray-500);
    text-transform: uppercase;
    font-weight: 500;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-link {
    color: var(--gray-800);
    text-decoration: none;
    font-size: 12px;
    font-weight: 400;
    letter-spacing: -0.01em;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-link:hover {
    color: var(--gray-500);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
    width: 17px;
}

.hamburger span {
    width: 100%;
    height: 1px;
    background: var(--gray-800);
    transition: var(--transition-smooth);
}

/* ============================================
   Hero Section (Apple-style)
   ============================================ */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000000;
    overflow: hidden;
    padding-top: 44px;
}

#three-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.4) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--primary-white);
    padding: 0 22px;
    max-width: 980px;
    margin: 0 auto;
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hero-subtitle {
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    opacity: 0.8;
}

.hero-main-title {
    font-size: 80px;
    font-weight: 600;
    letter-spacing: -0.04em;
    line-height: 1.05;
    background: linear-gradient(180deg, #ffffff 0%, #e0e0e0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 21px;
    font-weight: 400;
    margin: 20px 0 40px;
    opacity: 0.9;
    letter-spacing: -0.01em;
    line-height: 1.381;
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 48px;
    margin: 48px 0;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 600;
    letter-spacing: -0.03em;
    color: var(--primary-white);
}

.stat-label {
    font-size: 12px;
    letter-spacing: 0.01em;
    text-transform: uppercase;
    opacity: 0.6;
    margin-top: 4px;
    font-weight: 400;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 12px 22px;
    background: var(--accent-blue);
    color: var(--primary-white);
    text-decoration: none;
    font-weight: 400;
    font-size: 17px;
    letter-spacing: -0.022em;
    border-radius: 980px;
    transition: var(--transition-smooth);
}

.cta-button:hover {
    background: #0077ED;
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
}

.mouse {
    width: 20px;
    height: 32px;
    border: 1.5px solid rgba(255, 255, 255, 0.5);
    border-radius: 16px;
    position: relative;
    margin: 0 auto;
}

.wheel {
    width: 2px;
    height: 6px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { top: 8px; opacity: 1; }
    100% { top: 20px; opacity: 0; }
}

/* ============================================
   Section Styles (Apple-inspired)
   ============================================ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 22px;
}

.container-large {
    max-width: var(--container-large);
    margin: 0 auto;
    padding: 0 22px;
}

section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-subtitle {
    display: block;
    font-size: 14px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--gray-500);
    font-weight: 400;
    margin-bottom: 8px;
}

.section-title {
    font-size: 48px;
    font-weight: 600;
    color: var(--gray-800);
    letter-spacing: -0.03em;
    line-height: 1.08;
    margin-bottom: 16px;
}

.title-underline {
    width: 40px;
    height: 2px;
    background: var(--gray-800);
    margin: 16px auto 0;
    border-radius: 2px;
}

/* ============================================
   About Section
   ============================================ */
.about-section {
    background: var(--gray-100);
}

.about-lead {
    font-size: 24px;
    line-height: 1.4;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
    color: var(--gray-800);
    font-weight: 400;
    letter-spacing: -0.02em;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.about-item {
    background: var(--primary-white);
    padding: 32px 24px;
    border-radius: 18px;
    text-align: center;
    transition: var(--transition-smooth);
    border: 1px solid var(--gray-200);
}

.about-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.about-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    background: var(--gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--gray-800);
}

.about-item h3 {
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--gray-800);
    letter-spacing: -0.01em;
}

.about-item p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--gray-500);
    letter-spacing: -0.01em;
}

/* Core Values */
.values-section {
    margin-top: 80px;
    padding: 64px 48px;
    background: var(--gray-800);
    border-radius: 18px;
}

.values-title {
    font-size: 40px;
    font-weight: 600;
    color: var(--primary-white);
    text-align: center;
    margin-bottom: 48px;
    letter-spacing: -0.03em;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
}

.value-card {
    background: rgba(255, 255, 255, 0.08);
    padding: 40px 28px;
    border-radius: 18px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-smooth);
}

.value-card:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-2px);
}

.value-icon {
    font-size: 40px;
    color: var(--primary-white);
    margin-bottom: 16px;
}

.value-card h4 {
    font-size: 21px;
    color: var(--primary-white);
    margin-bottom: 12px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.value-card p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.5;
    letter-spacing: -0.01em;
}

/* ============================================
   Brands Section (Apple-style product showcase)
   ============================================ */
.brands-section {
    background: var(--primary-white);
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.brand-card {
    background: var(--gray-100);
    border-radius: 18px;
    overflow: hidden;
    transition: var(--transition-smooth);
    cursor: pointer;
    border: 1px solid var(--gray-200);
}

.brand-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
}

.brand-image {
    position: relative;
    height: 280px;
    overflow: hidden;
}

.brand-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.4) 100%);
    transition: var(--transition-smooth);
}

.brand-card:hover .brand-overlay {
    background: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.5) 100%);
}

.brand-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 56px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.2);
    letter-spacing: -0.04em;
}

.brand-content {
    padding: 28px 24px;
}

.brand-name {
    font-size: 28px;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}

.brand-type {
    font-size: 12px;
    color: var(--gray-500);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 16px;
    font-weight: 400;
}

.brand-description {
    font-size: 14px;
    line-height: 1.5;
    color: var(--gray-600);
    margin-bottom: 20px;
    letter-spacing: -0.01em;
}

.brand-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: var(--primary-white);
    border-radius: 12px;
    font-size: 11px;
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
}

.feature-tag i {
    color: var(--gray-500);
    font-size: 10px;
}

.brand-btn {
    width: 100%;
    padding: 12px;
    background: var(--accent-blue);
    color: var(--primary-white);
    border: none;
    border-radius: 980px;
    font-size: 14px;
    font-weight: 400;
    letter-spacing: -0.01em;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.brand-btn:hover {
    background: #0077ED;
}

/* ============================================
   Vision Section
   ============================================ */
.vision-section {
    background: var(--gray-100);
}

.vision-statement {
    text-align: center;
    padding: 56px 48px;
    background: var(--gray-800);
    border-radius: 18px;
    margin-bottom: 64px;
}

.vision-main-title {
    font-size: 40px;
    font-weight: 600;
    color: var(--primary-white);
    margin-bottom: 20px;
    letter-spacing: -0.03em;
}

.vision-main-text {
    font-size: 19px;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.9);
    max-width: 800px;
    margin: 0 auto;
    letter-spacing: -0.01em;
}

.roadmap-title {
    font-size: 40px;
    font-weight: 600;
    text-align: center;
    color: var(--gray-800);
    margin-bottom: 48px;
    letter-spacing: -0.03em;
}

/* Timeline (Apple-style) */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 32px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--gray-300);
}

.timeline-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 48px;
    position: relative;
}

.timeline-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.marker-inner {
    width: 80px;
    height: 80px;
    background: var(--gray-800);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 21px;
    font-weight: 600;
    color: var(--primary-white);
    letter-spacing: -0.02em;
}

.timeline-content {
    width: 42%;
    background: var(--primary-white);
    padding: 28px 24px;
    border-radius: 18px;
    border: 1px solid var(--gray-200);
}

.timeline-content h4 {
    font-size: 21px;
    color: var(--gray-800);
    margin-bottom: 16px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.timeline-content ul {
    list-style: none;
}

.timeline-content li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--gray-600);
    letter-spacing: -0.01em;
}

.timeline-content li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--gray-500);
    font-size: 18px;
}

/* Strategy Cards */
.strategy-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-top: 64px;
}

.strategy-card {
    background: var(--primary-white);
    padding: 32px 24px;
    border-radius: 18px;
    text-align: center;
    transition: var(--transition-smooth);
    border: 1px solid var(--gray-200);
}

.strategy-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

.strategy-icon {
    font-size: 40px;
    color: var(--gray-800);
    margin-bottom: 16px;
}

.strategy-card h4 {
    font-size: 19px;
    color: var(--gray-800);
    margin-bottom: 12px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.strategy-card p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.5;
    letter-spacing: -0.01em;
}

/* ============================================
   Contact Section
   ============================================ */
.contact-section {
    background: var(--primary-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: start;
}

.contact-info {
    background: var(--gray-100);
    padding: 40px 32px;
    border-radius: 18px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 28px;
}

.info-icon {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--primary-white);
    flex-shrink: 0;
}

.info-text h4 {
    color: var(--gray-800);
    font-size: 17px;
    margin-bottom: 4px;
    font-weight: 600;
}

.info-text p {
    color: var(--gray-600);
    font-size: 14px;
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 32px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--gray-200);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-800);
    font-size: 16px;
    transition: var(--transition-smooth);
}

.social-link:hover {
    background: var(--gray-800);
    color: var(--primary-white);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--gray-100);
    padding: 40px 32px;
    border-radius: 18px;
}

.form-group {
    position: relative;
    margin-bottom: 24px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px;
    border: 1px solid var(--gray-300);
    border-radius: 12px;
    font-size: 14px;
    font-family: var(--font-primary);
    transition: var(--transition-smooth);
    background: var(--primary-white);
    color: var(--gray-800);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.form-group label {
    position: absolute;
    top: 16px;
    left: 16px;
    font-size: 14px;
    color: var(--gray-500);
    pointer-events: none;
    transition: var(--transition-smooth);
}

.form-group input:focus + label,
.form-group input:valid + label,
.form-group textarea:focus + label,
.form-group textarea:valid + label {
    top: -10px;
    left: 12px;
    font-size: 11px;
    color: var(--accent-blue);
    background: var(--gray-100);
    padding: 0 6px;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background: var(--accent-blue);
    color: var(--primary-white);
    border: none;
    border-radius: 980px;
    font-size: 14px;
    font-weight: 400;
    letter-spacing: -0.01em;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.submit-btn:hover {
    background: #0077ED;
}

/* ============================================
   Footer (Apple-style)
   ============================================ */
.footer {
    background: var(--gray-100);
    color: var(--gray-600);
    padding: 48px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 48px;
    margin-bottom: 32px;
}

.footer-brand {
    max-width: 350px;
}

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

.footer-tagline {
    font-size: 14px;
    opacity: 0.8;
    line-height: 1.5;
    color: var(--gray-600);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-column h4 {
    font-size: 12px;
    margin-bottom: 16px;
    color: var(--gray-800);
    font-weight: 600;
    letter-spacing: 0.01em;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 10px;
}

.footer-column a {
    color: var(--gray-600);
    text-decoration: none;
    font-size: 12px;
    transition: var(--transition-smooth);
}

.footer-column a:hover {
    color: var(--gray-800);
}

.footer-bottom {
    border-top: 1px solid var(--gray-300);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 12px;
    opacity: 0.7;
    margin-bottom: 8px;
    color: var(--gray-600);
}

.company-info {
    font-size: 11px;
    line-height: 1.6;
}

/* ============================================
   Scroll Progress
   ============================================ */
.scroll-progress {
    position: fixed;
    top: 44px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--gray-800);
    z-index: 9998;
    transition: width 0.1s ease;
}

/* ============================================
   Responsive Design (Apple-style breakpoints)
   ============================================ */

/* Tablet */
@media (max-width: 1068px) {
    :root {
        --section-padding: 80px;
        --container-max: 692px;
    }
    
    .hero-main-title {
        font-size: 56px;
    }
    
    .section-title {
        font-size: 40px;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        flex-direction: row !important;
        padding-left: 80px;
    }
    
    .timeline-marker {
        left: 30px;
    }
    
    .marker-inner {
        width: 64px;
        height: 64px;
        font-size: 17px;
    }
    
    .timeline-content {
        width: 100%;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* Mobile */
@media (max-width: 734px) {
    :root {
        --section-padding: 60px;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 44px;
        right: -100%;
        width: 100%;
        background: var(--primary-white);
        flex-direction: column;
        padding: 32px 22px;
        gap: 24px;
        transition: right 0.3s var(--transition-default);
        height: calc(100vh - 44px);
        align-items: flex-start;
        border-top: 1px solid var(--gray-200);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .hero-main-title {
        font-size: 40px;
    }
    
    .hero-description {
        font-size: 17px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .stat-divider {
        width: 40px;
        height: 1px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .about-grid,
    .values-grid,
    .brands-grid,
    .strategy-cards {
        grid-template-columns: 1fr;
    }
    
    .values-section {
        padding: 40px 24px;
    }
    
    .timeline {
        padding-left: 48px;
    }
    
    .timeline::before {
        left: 12px;
    }
    
    .timeline-marker {
        left: 12px;
    }
    
    .marker-inner {
        width: 48px;
        height: 48px;
        font-size: 14px;
    }
    
    .timeline-item {
        padding-left: 64px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 428px) {
    .hero-main-title {
        font-size: 32px;
    }
    
    .logo-main {
        font-size: 19px;
    }
    
    .section-title {
        font-size: 28px;
    }
}