/* saram.ai - Watercolor meets Data */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --rice-paper: #FAF7F0;
    --ink-wash: #E8E0D4;
    --grid-white: #F5F7FA;
    --human-indigo: #2C3E6B;
    --ai-teal: #00897B;
    --warmth-rose: #C0626B;
    --border-ink: #4A4A4A;
    --text-primary: #1A1A1A;
    --mist-gray: #7A7A7A;
}
body {
    background: var(--rice-paper);
    color: var(--text-primary);
    font-family: 'Noto Sans KR', sans-serif;
    font-weight: 400;
    font-size: 1rem;
    line-height: 1.8;
    overflow-x: hidden;
}

/* Hero */
#hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.ink-wash {
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(232,224,212,0.8) 0%, rgba(232,224,212,0.3) 40%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    animation: inkBloom 1.5s ease-out 0.3s forwards;
}
@keyframes inkBloom {
    to { transform: translate(-50%, -50%) scale(1); }
}
.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    opacity: 0;
    animation: fadeIn 1s ease 1s forwards;
}
@keyframes fadeIn {
    to { opacity: 1; }
}
.hero-hangul {
    font-family: 'Noto Serif KR', serif;
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    color: var(--human-indigo);
    letter-spacing: -0.02em;
}
.hero-domain {
    font-family: 'Space Mono', monospace;
    font-size: 0.9rem;
    letter-spacing: 0.15em;
    color: var(--ai-teal);
    margin-top: 0.5rem;
}
.hero-question {
    font-family: 'Noto Sans KR', sans-serif;
    font-size: clamp(1rem, 2vw, 1.3rem);
    color: var(--mist-gray);
    margin-top: 1.5rem;
}
.morph-border {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60px;
}
.morph-path {
    animation: morphLine 4s ease-in-out infinite alternate;
}
@keyframes morphLine {
    0% { d: path("M0,30 Q250,5 500,30 Q750,55 1000,30"); }
    100% { d: path("M0,30 L250,30 L500,30 L750,30 L1000,30"); }
}

/* Split Sections */
.split-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1000px;
    margin: 0 auto;
    padding: 4rem 2rem;
    gap: 2rem;
}
.section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.section.visible {
    opacity: 1;
    transform: translateY(0);
}
.human-half {
    position: relative;
    padding: 2rem;
    border-radius: 2px;
    overflow: hidden;
}
.watercolor-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(232,224,212,0.6) 0%, rgba(250,247,240,0.2) 70%);
    z-index: 0;
}
.wash-warm {
    background: radial-gradient(ellipse at 60% 40%, rgba(192,98,107,0.15) 0%, rgba(232,224,212,0.4) 50%, transparent 80%);
}
.wash-cool {
    background: radial-gradient(ellipse at 40% 60%, rgba(44,62,107,0.1) 0%, rgba(232,224,212,0.3) 50%, transparent 80%);
}
.human-half > *:not(.watercolor-bg) {
    position: relative;
    z-index: 1;
}
.ai-half {
    padding: 2rem;
    background: var(--grid-white);
    background-image:
        linear-gradient(rgba(74,74,74,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(74,74,74,0.05) 1px, transparent 1px);
    background-size: 20px 20px;
    border-left: 1px solid var(--border-ink);
}
.perspective-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    display: block;
    margin-bottom: 1rem;
}
.human-label {
    color: var(--warmth-rose);
}
.ai-label {
    color: var(--ai-teal);
}
.split-title {
    font-family: 'Noto Serif KR', serif;
    font-size: clamp(1.3rem, 2.5vw, 1.8rem);
    font-weight: 700;
    color: var(--human-indigo);
    margin-bottom: 1rem;
}
.ai-title {
    color: var(--ai-teal);
}
.split-body {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--text-primary);
}
.ai-body {
    color: var(--border-ink);
}
.data-pulse {
    width: 100%;
    height: 4px;
    margin-top: 1.5rem;
}
.data-pulse line {
    animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 0.15; }
    50% { opacity: 0.5; }
}

/* Full-Width Section */
.full-section {
    max-width: 700px;
    margin: 0 auto;
    padding: 5rem 2rem;
    text-align: center;
    position: relative;
}
.ink-wash-small {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(232,224,212,0.5) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
}
.full-title {
    font-family: 'Noto Serif KR', serif;
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 700;
    color: var(--human-indigo);
    position: relative;
    z-index: 1;
}
.full-subtitle {
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    color: var(--ai-teal);
    margin-top: 0.5rem;
    position: relative;
    z-index: 1;
}
.full-body {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-primary);
    margin-top: 2rem;
    position: relative;
    z-index: 1;
}

/* Footer */
#footer {
    text-align: center;
    padding: 3rem 2rem;
    border-top: 1px solid var(--ink-wash);
}
.footer-text {
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem;
    color: var(--mist-gray);
    letter-spacing: 0.1em;
}

/* Responsive */
@media (max-width: 700px) {
    .split-section {
        grid-template-columns: 1fr;
    }
    .ai-half {
        border-left: none;
        border-top: 1px solid var(--border-ink);
    }
}