/* ═══════════════════════════════════════════════════════════════════
   Mnemous Landing Page — "Authentic & Crafted" Editorial Style
   ═══════════════════════════════════════════════════════════════════ */

:root {
    /* Extreme Monochrome Palette */
    --color-bg: #08080a;
    /* Very deep, off-black for depth without being #000 */
    --color-bg-elevated: #101014;
    --color-border: #222226;
    --color-border-subtle: #19191d;

    --color-text-primary: #f0f0f0;
    --color-text-secondary: #88888f;
    --color-text-dim: #55555c;

    /* Just one accent color - A muted, elegant electric blue */
    --color-accent: #3b82f6;

    --spacing-sm: 12px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 96px;
    --spacing-xxl: 160px;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-serif: 'Newsreader', Georgia, serif;
    --font-mono: 'SFMono-Regular', Consolas, "Liberation Mono", Menlo, monospace;
}

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

html {
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ── NAVIGATION (Minimalist) ── */
.nav-minimal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(8, 8, 10, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border-subtle);
    z-index: 1000;
}

.nav-brand {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 32px;
}

.lang-switch {
    display: flex;
    gap: 16px;
    font-size: 14px;
    font-weight: 500;
}

.lang-switch button {
    background: none;
    border: none;
    color: var(--color-text-dim);
    cursor: pointer;
    transition: color 0.2s;
    font-family: var(--font-sans);
}

.lang-switch button:hover {
    color: var(--color-text-primary);
}

.lang-switch button.active {
    color: var(--color-text-primary);
}

.btn-login {
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: opacity 0.2s;
}

.btn-login:hover {
    opacity: 0.7;
}

/* ── LAYOUT ── */
.story-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
    padding-top: 160px;
    /* Space for nav */
}

/* ── SECTION: HERO ── */
.section-hero {
    min-height: 50vh;
    /* Reduced from 70vh to show affordance of next section */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    /* Centered for stronger CTA */
    text-align: center;
    padding-top: 80px;
    padding-bottom: var(--spacing-xl);
}

.hero-label {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-text-dim);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 80px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.5px;
    margin-bottom: var(--spacing-lg);
    color: #fff;
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 300;
    line-height: 1.6;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    /* Centered margin */
}

.sub-highlight {
    color: var(--color-text-primary);
    font-weight: 500;
}

.btn-primary-elegant {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 64px;
    /* Increased size for stronger affordance */
    padding: 0 56px;
    background: #fff;
    color: #000;
    font-size: 18px;
    /* Bigger font */
    font-weight: 600;
    text-decoration: none;
    transform: translateY(0);
    transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
    border-radius: 2px;
    /* Slight softening for modern feel */
}

.btn-primary-elegant:hover {
    background: #e0e0e0;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 255, 255, 0.15);
    /* Elegant glow on hover */
}

/* ── SECTION: REAL ARTIFACT (The Pitch) ── */
.section-artifact {
    padding: var(--spacing-xxl) 0;
    border-top: 1px solid var(--color-border-subtle);
}

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

.section-title-serif {
    font-family: var(--font-serif);
    font-size: 48px;
    font-weight: 400;
    margin-bottom: var(--spacing-md);
    letter-spacing: -1px;
}

.section-desc {
    font-size: 18px;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    line-height: 1.7;
}

/* The Email Mockup - Meticulously Crafted */
.artifact-email-mock {
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    padding: 60px;
    position: relative;
}

.email-header {
    border-bottom: 1px solid var(--color-border-subtle);
    padding-bottom: 24px;
    margin-bottom: 32px;
}

.email-row {
    margin-bottom: 12px;
    font-size: 15px;
    display: flex;
}

.email-label {
    color: var(--color-text-dim);
    width: 80px;
    font-family: var(--font-mono);
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 1px;
    padding-top: 2px;
}

.email-value {
    color: var(--color-text-primary);
    font-weight: 400;
}

.email-body {
    font-family: var(--font-serif);
    font-size: 20px;
    line-height: 1.8;
    color: #d1d1d6;
    word-break: keep-all;
    /* ADDED: Prevents awkward Korean word wrapping */
}

.email-body p {
    margin-bottom: 24px;
}

.email-body p:last-child {
    margin-bottom: 0;
}

.email-footer-badge {
    position: absolute;
    bottom: -20px;
    right: 40px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: 8px 16px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--color-text-dim);
    z-index: 2;
    /* Ensure it stays above the fade gradient */
}

/* ── SECTION: IMPACT ── */
.section-impact {
    padding: var(--spacing-xxl) 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    border-top: 1px solid var(--color-border-subtle);
}

.impact-label {
    font-family: var(--font-mono);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-text-dim);
    margin-bottom: 40px;
}

.impact-number {
    font-size: 14vw;
    /* Massive responding text */
    font-weight: 300;
    line-height: 1;
    letter-spacing: -6px;
    font-family: var(--font-sans);
    /* Keep it very clinical */
    color: #fff;
    margin-bottom: 24px;
}

.impact-number .colon {
    color: var(--color-text-dim);
}

.impact-detail {
    font-size: 20px;
    color: var(--color-text-secondary);
}

/* ── SECTION: PRICING ── */
.section-pricing {
    padding: var(--spacing-xxl) 0;
    border-top: 1px solid var(--color-border-subtle);
}

.section-title-sans {
    font-size: 40px;
    font-weight: 300;
    letter-spacing: -1px;
}

.pricing-container {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
    align-items: stretch;
}

.price-tier {
    border: 1px solid var(--color-border);
    padding: 40px 28px;
    display: flex;
    flex-direction: column;
    text-align: left;
    min-width: 0;
}

.price-tier.tier-pro {
    background: var(--color-bg-elevated);
}

.tier-name {
    font-size: 18px;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.tier-price {
    font-size: 56px;
    font-weight: 300;
    letter-spacing: -2px;
    color: #fff;
    margin-bottom: 16px;
    min-height: 72px;
    display: flex;
    align-items: flex-start;
    line-height: 1.15;
    white-space: normal;
    flex-wrap: wrap;
    row-gap: 4px;
    word-break: keep-all;
    overflow-wrap: anywhere;
}

.period {
    font-size: 20px;
    color: var(--color-text-dim);
    letter-spacing: 0;
}

.tier-desc {
    font-size: 16px;
    color: var(--color-text-secondary);
    margin-bottom: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--color-border);
    min-height: 124px;
    line-height: 1.55;
    word-break: keep-all;
    overflow-wrap: anywhere;
}

.tier-features {
    list-style: none;
    flex: 1;
    margin-bottom: 64px;
}

.tier-features li {
    font-size: 16px;
    color: var(--color-text-primary);
    margin-bottom: 20px;
    display: grid;
    grid-template-columns: 14px minmax(0, 1fr);
    column-gap: 16px;
    align-items: flex-start;
    line-height: 1.55;
    word-break: keep-all;
    overflow-wrap: anywhere;
}

.tier-features li::before {
    content: "—";
    color: var(--color-text-dim);
    margin-top: 1px;
}

.btn-outline,
.btn-solid {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 56px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.2s;
}

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

.btn-outline:hover {
    background: var(--color-bg-elevated);
}

.btn-solid {
    background: #fff;
    color: #000;
}

.btn-solid:hover {
    background: #e0e0e0;
}

@media (max-width: 1180px) {
    .pricing-container {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 720px) {
    .pricing-container {
        grid-template-columns: 1fr;
    }

    .price-tier {
        padding: 32px 24px;
    }
}

/* ── FOOTER ── */
.footer-full {
    margin-top: auto;
    border-top: 1px solid var(--color-border-subtle);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 48px 40px 32px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 32px;
}

.footer-brand-col {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.footer-brand {
    font-weight: 600;
    font-size: 18px;
}

.footer-tagline {
    font-size: 13px;
    color: var(--color-text-dim);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--color-text-primary);
}

.footer-divider {
    height: 1px;
    background: var(--color-border-subtle);
    margin-bottom: 24px;
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.footer-biz {
    font-size: 13px;
    color: var(--color-text-dim);
    line-height: 1.6;
}

.footer-sep {
    margin: 0 8px;
    opacity: 0.3;
}

.footer-copy {
    color: var(--color-text-dim);
    font-size: 13px;
    margin-top: 12px;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
    .nav-minimal {
        padding: 0 24px;
    }

    .story-container {
        padding: 0 24px;
        padding-top: 120px;
    }

    .hero-title {
        font-size: 48px;
    }

    .artifact-email-mock {
        padding: 32px;
    }

    .email-body {
        font-size: 16px;
    }

    .impact-number {
        font-size: 80px;
    }

    .pricing-container {
        grid-template-columns: 1fr;
    }

    .price-tier {
        padding: 40px 32px;
    }

    .footer-inner {
        padding: 32px 24px 24px;
    }

    .footer-top {
        flex-direction: column;
        gap: 20px;
    }

    .footer-links {
        gap: 16px;
    }

    .footer-biz .footer-sep {
        display: none;
    }

    .footer-biz {
        display: flex;
        flex-direction: column;
        gap: 2px;
    }
}