/* ==========================================================================
   SANYŪGEN LANDING V1 - DESIGN SYSTEM & STYLES
   ========================================================================== */

/* 1. Reset & Variables */
:root {
    --bg-color: #050505;
    --text-primary: #f5f5f5;
    --text-secondary: #8c8c8c;
    --text-muted: #4c4c4c;
    --accent-color: #d4c5b9; /* Warm sand/bronze */
    --accent-dim: rgba(212, 197, 185, 0.1);
    --border-color: #1a1a1a;
    --border-hover: #333333;
    
    --font-sans: 'Instrument Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-serif: 'Instrument Serif', Georgia, serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-quick: all 0.2s ease;
    
    --container-max-width: 1200px;
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
    line-height: 1.6;
}

/* 2. Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
    background: #1c1c1c;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #333;
}

/* 3. Base Typography & Elements */
h1, h2, h3, h4 {
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

p {
    color: var(--text-secondary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-quick);
}

img, svg {
    max-width: 100%;
    height: auto;
    display: block;
}

.text-serif-italic {
    font-family: var(--font-serif);
    font-style: italic;
}

/* 4. Layout Containers */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.grid-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
}

@media (min-width: 768px) {
    .grid-layout {
        grid-template-columns: 1fr 2fr;
        gap: 6rem;
    }
}

/* 5. Interactive Canvas Backplate */
#hero-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none; /* Let clicks pass through */
    opacity: 0.85;
}

/* 6. Header & Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(5, 5, 5, 0.7);
    border-bottom: 1px solid rgba(26, 26, 26, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 100;
    display: flex;
    align-items: center;
    transition: var(--transition-smooth);
}

.navbar-container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 1.1rem;
    letter-spacing: 0.2em;
    color: var(--text-primary);
    display: flex;
    align-items: center;
}

.logo-dot {
    display: inline-block;
    width: 4px;
    height: 4px;
    background-color: var(--accent-color);
    margin-left: 6px;
    border-radius: 50%;
}

.logo-image {
    height: 22px;
    width: auto;
    display: none;
}

/* Support for swapping graphic logo (RFC-008) */
.logo.has-image .logo-text,
.logo.has-image .logo-dot {
    display: none !important;
}

.logo.has-image .logo-image {
    display: block !important;
}

.footer-logo.has-image .logo-text {
    display: none !important;
}

.footer-logo.has-image .logo-image {
    display: block !important;
}

.nav-menu {
    display: none;
}

@media (min-width: 768px) {
    .nav-menu {
        display: flex;
        align-items: center;
        gap: 2.5rem;
    }
}

.nav-link {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--accent-color);
    transition: var(--transition-smooth);
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link:hover::after {
    width: 100%;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.status-capsule {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    color: var(--accent-color);
    background-color: var(--accent-dim);
    border: 1px solid rgba(212, 197, 185, 0.2);
    padding: 0.35rem 0.75rem;
    border-radius: 100px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.pulse-indicator {
    width: 5px;
    height: 5px;
    background-color: var(--accent-color);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(212, 197, 185, 0.7);
    animation: pulse 1.8s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(212, 197, 185, 0.7);
    }
    70% {
        transform: scale(1);
        box-shadow: 0 0 0 4px rgba(212, 197, 185, 0);
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(212, 197, 185, 0);
    }
}

.cta-nav {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--bg-color);
    background-color: var(--text-primary);
    padding: 0.5rem 1.2rem;
    border-radius: 2px;
}

.cta-nav:hover {
    background-color: var(--accent-color);
}

/* 7. Hero Section */
.section-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1;
    padding-top: var(--header-height);
}

.hero-container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-meta {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.hero-mono-label {
    font-weight: 600;
    color: var(--text-primary);
}

.meta-separator {
    color: var(--text-muted);
}

.hero-italic-label {
    font-family: var(--font-serif);
    font-style: italic;
    text-transform: none;
    letter-spacing: 0.02em;
    font-size: 0.95rem;
}

.hero-title {
    font-size: 2.5rem;
    line-height: 1.15;
    max-width: 900px;
    margin-bottom: 2.5rem;
}

.headline-highlight {
    display: block;
    color: var(--text-secondary);
    margin-top: 0.75rem;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3.8rem;
    }
}

.hero-subtitle {
    font-family: var(--font-sans);
    font-size: 1.1rem;
    font-weight: 400;
    max-width: 600px;
    margin-bottom: 3.5rem;
    color: var(--text-secondary);
}

@media (min-width: 768px) {
    .hero-subtitle {
        font-size: 1.3rem;
    }
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    margin-bottom: 5rem;
}

.btn {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.9rem 2.2rem;
    border-radius: 2px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-primary {
    background-color: var(--text-primary);
    color: var(--bg-color);
}

.btn-primary:hover {
    background-color: var(--accent-color);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
    border-color: var(--text-primary);
}

.hero-status {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-mono {
    color: var(--text-muted);
}

.status-value {
    color: var(--accent-color);
}

/* 8. Content Sections General */
.section-content {
    padding: 8rem 0;
    position: relative;
    z-index: 1;
    border-top: 1px solid rgba(26, 26, 26, 0.3);
}

@media (min-width: 768px) {
    .section-content {
        padding: 12rem 0;
    }
}

.section-number {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    color: var(--accent-color);
    display: block;
    margin-bottom: 1.5rem;
}

.section-title {
    font-size: 2.2rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    line-height: 1.2;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 3rem;
    }
}

.section-subtitle {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.4rem;
    color: var(--text-secondary);
    margin-top: 1rem;
}

.paragraph-lead {
    font-size: 1.25rem;
    line-height: 1.5;
    color: var(--text-primary);
    margin-bottom: 2rem;
    font-weight: 400;
}

@media (min-width: 768px) {
    .paragraph-lead {
        font-size: 1.5rem;
    }
}

.paragraph-body {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Section Specific: AgencyGEN Highlight */
.section-agency-gen {
    background-color: rgba(10, 10, 10, 0.4);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.text-highlight {
    color: var(--accent-color);
}

/* 9. Comparison Table Component */
.comparison-table {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: rgba(5, 5, 5, 0.8);
    overflow: hidden;
}

.comparison-row {
    display: grid;
    grid-template-columns: 1fr;
    border-bottom: 1px solid var(--border-color);
}

@media (min-width: 768px) {
    .comparison-row {
        grid-template-columns: 1fr 1fr;
    }
}

.comparison-row:last-child {
    border-bottom: none;
}

.comparison-col {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: var(--transition-smooth);
}

@media (min-width: 768px) {
    .comparison-row:not(.table-header) .comparison-col:first-child {
        border-right: 1px solid var(--border-color);
    }
}

.table-header {
    display: none;
}

@media (min-width: 768px) {
    .table-header {
        display: grid;
        font-family: var(--font-mono);
        font-size: 0.8rem;
        letter-spacing: 0.05em;
        color: var(--text-secondary);
        background-color: rgba(15, 15, 15, 0.5);
    }
    
    .table-header .comparison-col {
        padding: 1.2rem 2rem;
    }
}

.row-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    text-transform: uppercase;
}

@media (min-width: 768px) {
    .row-label {
        display: none; /* Label implied by column header on desktop */
    }
}

.row-value {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.highlighted-col {
    background-color: rgba(212, 197, 185, 0.02);
}

.highlighted-col .row-value {
    color: var(--text-primary);
}

/* 10. Pillars Section */
.section-header-centered {
    max-width: 800px;
    margin: 0 auto 5rem auto;
    text-align: center;
}

.section-subtitle-centered {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-top: 1rem;
}

.pillars-container {
    display: grid;
    grid-template-columns: 1fr;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

@media (min-width: 992px) {
    .pillars-container {
        grid-template-columns: repeat(5, 1fr);
    }
}

.pillar-card {
    background-color: transparent;
    padding: 3rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

.pillar-card:last-child {
    border-bottom: none;
}

@media (min-width: 992px) {
    .pillar-card {
        border-bottom: none;
        border-right: 1px solid var(--border-color);
        padding: 3.5rem 2rem;
    }
    .pillar-card:last-child {
        border-right: none;
    }
}

.pillar-card:hover {
    background-color: rgba(212, 197, 185, 0.02);
}

.pillar-num {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    line-height: 1;
    color: var(--text-muted);
    font-style: italic;
    transition: var(--transition-smooth);
}

.pillar-card:hover .pillar-num {
    color: var(--accent-color);
}

.pillar-content {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.pillar-title {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-primary);
}

.pillar-description {
    font-size: 0.88rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* RFC-010: Transition Section styling */
.section-transition {
    padding: 8rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(10, 10, 10, 0.2);
    position: relative;
    z-index: 1;
}

.transition-wrapper {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
}

.transition-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    color: var(--accent-color);
    display: block;
    margin-bottom: 1.5rem;
}

.transition-text {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.8rem;
    line-height: 1.4;
    color: var(--text-primary);
}

@media (min-width: 768px) {
    .section-transition {
        padding: 10rem 0;
    }
    .transition-text {
        font-size: 2.4rem;
    }
}

/* 11. Obsession Section Quote */
.obsess-quote {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.8rem;
    line-height: 1.3;
    color: var(--accent-color);
    margin-top: 2.5rem;
    padding-left: 1.5rem;
    border-left: 2px solid var(--accent-color);
    max-width: 600px;
}

@media (min-width: 768px) {
    .obsess-quote {
        font-size: 2.2rem;
    }
}

/* 12. Slogan Highlight Section */
.section-slogan {
    padding: 10rem 0;
    background-color: var(--bg-color);
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slogan-container {
    max-width: 800px;
    padding: 0 2rem;
    text-align: center;
}

.slogan-text {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 2rem;
    line-height: 1.3;
    color: var(--text-primary);
}

@media (min-width: 768px) {
    .slogan-text {
        font-size: 3.2rem;
    }
}

/* 13. Call To Action (CTA) Final */
.section-cta {
    padding: 8rem 0;
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.cta-title {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    max-width: 600px;
}

@media (min-width: 768px) {
    .cta-title {
        font-size: 3rem;
    }
}

.cta-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: 3.5rem;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
}

/* 14. Footer */
.footer {
    padding: 6rem 0 3rem 0;
    border-top: 1px solid var(--border-color);
    background-color: #030303;
    position: relative;
    z-index: 1;
}

.footer-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    margin-bottom: 5rem;
}

@media (min-width: 768px) {
    .footer-container {
        grid-template-columns: 1.5fr 2fr;
    }
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.footer-logo {
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 1.1rem;
    letter-spacing: 0.2em;
    color: var(--text-primary);
}

.footer-tagline {
    font-size: 0.9rem;
    color: var(--text-secondary);
    max-width: 280px;
    line-height: 1.5;
}

.footer-info {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
}

@media (min-width: 480px) {
    .footer-info {
        grid-template-columns: repeat(3, 1fr);
    }
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    text-transform: uppercase;
}

.footer-link, .footer-text {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

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

.footer-bottom {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
    border-top: 1px solid rgba(26, 26, 26, 0.4);
    padding-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.footer-thesis {
    font-family: var(--font-serif);
    font-style: italic;
    color: var(--text-muted);
    font-size: 1.1rem;
}

.footer-copyright {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* 15. Scroll Reveal & Intersection Observer Animations */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Fast-acting animations for Hero text */
.fade-in {
    opacity: 0;
    transform: translateY(15px);
    animation: heroFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-meta.fade-in { animation-delay: 0.2s; }
.hero-title.fade-in { animation-delay: 0.4s; }
.hero-subtitle.fade-in { animation-delay: 0.6s; }
.hero-actions.fade-in { animation-delay: 0.8s; }
.hero-status.fade-in { animation-delay: 1s; }

@keyframes heroFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}