/* 
  Mirable Premium Hybrid Design System v5
  Concept: Classic Mirable Red Meets Innovative Pearl
*/

:root {
    --primary-red: #D32F2F; 
    --deep-red: #B71C1C;
    --light-red: #FFEBEE;
    --text-dark: #1A1A1A;
    --text-muted: #666666;
    --pearl-bg: #FFFFFF;
    
    --nacre-gradient: linear-gradient(
        110deg,
        #D32F2F 0%,
        #FF8A80 25%,
        #80D8FF 50%,
        #B9F6CA 75%,
        #D32F2F 100%
    );
    
    --font-main: 'Inter', sans-serif;
    --font-serif: 'Playfair Display', serif;
    --transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

/* Language Control */
html[lang="en"] .lang-ko { display: none !important; }
html[lang="ko"] .lang-en { display: none !important; }

/* Korean Typography Optimization */
html[lang="ko"] {
    word-break: keep-all;
}

html[lang="ko"] body {
    font-size: 0.95rem; /* Slightly smaller base */
}

html[lang="ko"] .hero h1 {
    font-size: clamp(2.8rem, 8.5vw, 6.2rem); /* Reduced from 3.5rem-7.5rem */
    letter-spacing: -1.5px;
    line-height: 1.15; /* Increased line-height for better spacing in KO */
}

html[lang="ko"] .section-title {
    font-size: clamp(2rem, 4.5vw, 3rem); /* Reduced from 2.5rem-3.5rem */
}

html[lang="ko"] .value-card h3 {
    font-size: 1.6rem; /* Reduced from 1.8rem */
}

html[lang="ko"] .value-card p {
    font-size: 0.95rem; /* Reduced from 1.05rem */
    line-height: 1.7;
}

html[lang="ko"] .hero p {
    font-size: 1.2rem; /* Reduced from 1.4rem */
}

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

body {
    font-family: var(--font-main);
    background-color: var(--pearl-bg);
    color: var(--text-dark);
    line-height: 1.7;
    overflow-x: hidden;
    word-break: keep-all;
}

/* Background Texture */
body::before {
    content: "";
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: url('https://www.transparenttextures.com/patterns/natural-paper.png');
    opacity: 0.05;
    pointer-events: none;
    z-index: 10000;
}

/* --- Navigation (Hybrid: Stable + Modern) --- */
nav {
    position: fixed;
    top: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1100px;
    padding: 0.8rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(211, 47, 47, 0.1);
    border-radius: 100px;
    transition: var(--transition);
}

nav:hover {
    width: 92%;
    background: rgba(255, 255, 255, 0.95);
}

.logo img {
    height: 30px;
    width: auto;
    object-fit: contain;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.lang-toggle {
    display: flex;
    gap: 0.5rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    background: rgba(211, 47, 47, 0.05);
    transition: var(--transition);
}

.lang-toggle span {
    transition: var(--transition);
}

.lang-toggle .divider {
    opacity: 0.3;
    font-weight: 400;
}

html[lang="en"] .lang-toggle span[data-lang="en"],
html[lang="ko"] .lang-toggle span[data-lang="ko"] {
    color: var(--primary-red);
}

.nav-links .btn-mirable {
    padding: 0.7rem 1.8rem;
    background: var(--primary-red);
    color: white;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.85rem;
    border-radius: 100px; /* Rounded to match Nav */
    transition: var(--transition);
}

.nav-links .btn-mirable:hover {
    background: var(--text-dark);
    transform: translateY(-2px);
}

/* --- Hero Section (Preserving the Vibe) --- */
.hero {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.pearl-texture {
    position: absolute;
    width: 150%;
    height: 150%;
    background: var(--nacre-gradient);
    background-size: 200% 200%;
    animation: nacre-flow 36s infinite ease-in-out; /* 3x slower (from 12s) */
    filter: blur(60px);
    opacity: 0.3;
    z-index: 0;
}

@keyframes nacre-flow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(3.5rem, 10vw, 7.5rem);
    line-height: 0.95;
    margin-bottom: 2rem;
    font-weight: 800;
    letter-spacing: -3px;
    color: var(--text-dark);
    opacity: 0;
    transform: translateY(50px);
}

.nacre-text {
    background: var(--nacre-gradient);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: nacre-flow 30s infinite linear; /* 3x slower (from 10s) */
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.hero p {
    font-size: 1.4rem;
    color: var(--text-muted);
    opacity: 0;
    transform: translateY(30px);
}

/* --- Philosophy Section (Premium Grid) --- */
#values {
    padding: 10rem 8%;
    background: white;
    text-align: center;
}

.section-label {
    color: var(--primary-red);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 4px;
    font-size: 0.8rem;
    margin-bottom: 1.5rem;
    display: block;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 5rem;
    color: var(--text-dark);
    letter-spacing: -1.5px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.value-card {
    padding: 4rem 2.5rem;
    background: #fff;
    border: 1px solid rgba(211, 47, 47, 0.1);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.value-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: var(--nacre-gradient);
    background-size: 200% 200%;
    opacity: 0;
    transition: var(--transition);
    z-index: 0;
}

.value-card:hover {
    transform: translateY(-15px);
    border-color: var(--primary-red);
    box-shadow: 0 20px 40px rgba(211, 47, 47, 0.1);
}

.value-card:hover::before {
    opacity: 0.05;
    animation: nacre-flow 15s infinite linear; /* 3x slower (from 5s) */
}

.value-card .number {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    color: var(--primary-red);
    margin-bottom: 1.5rem;
    display: block;
    position: relative;
    z-index: 1;
}

.value-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    font-weight: 800;
    position: relative;
    z-index: 1;
}

.value-card p {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.8;
    position: relative;
    z-index: 1;
}

/* --- CTA Section --- */
.cta-section {
    padding: 10rem 8%;
    background: var(--light-red);
    text-align: center;
}

.btn-large {
    padding: 1.2rem 3.5rem;
    background: var(--primary-red);
    color: white;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 100px; /* Rounded to match Nav */
    transition: var(--transition);
    display: inline-block;
    box-shadow: 0 10px 30px rgba(211, 47, 47, 0.2);
}

.btn-large:hover {
    background: var(--text-dark);
    transform: scale(1.05);
}

/* --- Footer (Brand Classic) --- */
footer {
    padding: 1.5rem 8%; /* Reduced height by half again */
    background: var(--primary-red);
    color: white;
    text-align: center;
}

footer .footer-logo img {
    height: 28px;
    filter: brightness(0) invert(1);
    margin-bottom: 1.2rem;
}

footer p {
    opacity: 0.95; /* Better readability */
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* --- Animations --- */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 1s cubic-bezier(0.23, 1, 0.32, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1024px) {
    .values-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 4.5rem; }
}