/* ============================================================
   MasqueradeProtocol.com - Chrome Pastoralism / Flat Design
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
    --bg-primary: #1E1F23;
    --bg-secondary: #2B2D33;
    --surface-chrome: #D4D7DC;
    --border-silver: #C0C0C0;
    --text-primary: #A8ACB3;
    --text-secondary: #8A8F96;
    --accent-rose: #D4A0A0;
    --accent-gold: #C9B97A;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Source Sans 3', sans-serif;
    font-weight: 400;
    font-size: clamp(0.9rem, 1.1vw, 1.1rem);
    line-height: 1.8;
    letter-spacing: 0.02em;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

/* --- Navigation --- */
#main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--bg-primary);
    border-bottom: 1px solid transparent;
    transition: border-color 0.4s ease;
}

#main-nav.scrolled {
    border-bottom-color: var(--border-silver);
}

.nav-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: 'Fira Sans', sans-serif;
    font-weight: 300;
    font-size: 0.9rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--surface-chrome);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-links a {
    font-family: 'Fira Sans', sans-serif;
    font-weight: 300;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent-rose);
}

.nav-star {
    color: var(--accent-gold);
    font-size: 0.5rem;
    opacity: 0.6;
}

/* --- Hero Section --- */
#hero {
    position: relative;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.star-field {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.star {
    position: absolute;
    border-radius: 0;
    width: 3px;
    height: 3px;
}

.star-chrome {
    background-color: var(--surface-chrome);
}

.star-rose {
    background-color: var(--accent-rose);
}

.star-gold {
    background-color: var(--accent-gold);
}

.star-sm {
    width: 2px;
    height: 2px;
}

.star-md {
    width: 4px;
    height: 4px;
}

.star-lg {
    width: 6px;
    height: 6px;
}

.hero-constellation-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.constellation-line {
    stroke: var(--border-silver);
    stroke-width: 1;
    stroke-opacity: 0.4;
    stroke-dasharray: 4 8;
    fill: none;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 0 2rem;
}

.hero-title {
    font-family: 'Fira Sans', sans-serif;
    font-weight: 300;
    font-size: clamp(2.5rem, 6vw, 5.5rem);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--surface-chrome);
    opacity: 0;
    transition: opacity 1.2s ease;
}

.hero-title.visible {
    opacity: 1;
}

.hero-tagline {
    font-family: 'Fira Sans', sans-serif;
    font-weight: 500;
    font-size: 1.1rem;
    letter-spacing: 0.04em;
    color: var(--accent-rose);
    margin-top: 1.5rem;
    opacity: 0;
    transition: opacity 1.2s ease;
}

.hero-tagline.visible {
    opacity: 1;
}

.hero-chevron {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.chevron-arrow {
    display: block;
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 8px solid var(--accent-gold);
    animation: chevronPulse 3s ease-in-out infinite;
}

@keyframes chevronPulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

/* --- Star-Glyph Dividers --- */
.star-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    padding: 3rem 0;
}

.star-divider span {
    font-family: 'Source Sans 3', sans-serif;
    font-size: 0.6rem;
    color: var(--accent-gold);
    opacity: 0.6;
}

/* --- Section Headings --- */
.section-heading {
    font-family: 'Fira Sans', sans-serif;
    font-weight: 300;
    font-size: clamp(1.25rem, 2.5vw, 2rem);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--surface-chrome);
    text-align: center;
    margin-bottom: 3rem;
}

/* --- Card Sections --- */
.card-section {
    position: relative;
    padding: 4rem 0;
}

.section-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
}

.cluster-constellation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.cluster-line {
    stroke-dashoffset: 500;
    transition: stroke-dashoffset 1.5s ease-in-out;
}

.cluster-line.drawn {
    stroke-dashoffset: 0;
}

/* --- Card Grid --- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1.5rem;
    position: relative;
    z-index: 1;
}

/* Cluster A: 3-up standard */
.cluster-a .card:nth-child(1) {
    grid-column: 1 / 5;
}
.cluster-a .card:nth-child(2) {
    grid-column: 5 / 9;
}
.cluster-a .card:nth-child(3) {
    grid-column: 9 / 13;
}

/* Cluster B: Asymmetric 2-up */
.cluster-b .card:nth-child(1) {
    grid-column: 1 / 6;
}
.cluster-b .card:nth-child(2) {
    grid-column: 6 / 13;
}

/* Cluster C: Inset 2-up (floating) */
.cluster-c .card:nth-child(1) {
    grid-column: 2 / 7;
}
.cluster-c .card:nth-child(2) {
    grid-column: 7 / 12;
}

/* --- Card Styles --- */
.card {
    position: relative;
    border: 1px solid var(--border-silver);
    padding: 2rem;
    transition: border-color 0.3s ease;
    overflow: hidden;
    opacity: 0;
    transition: opacity 0.6s ease, border-color 0.3s ease;
}

.card.revealed {
    opacity: 1;
}

.card-graphite {
    background-color: var(--bg-secondary);
}

.card-chrome {
    background-color: var(--surface-chrome);
}

.card:hover {
    border-color: var(--accent-rose);
}

.card:hover .card-title {
    color: var(--accent-rose);
}

.card:hover .mask-watermark {
    opacity: 0.12;
}

/* --- Card Corner Brackets --- */
.card-corner-tl,
.card-corner-br {
    position: absolute;
    width: 16px;
    height: 16px;
    pointer-events: none;
}

.card-corner-tl {
    top: -1px;
    left: -1px;
    border-top: 2px solid var(--border-silver);
    border-left: 2px solid var(--border-silver);
}

.card-corner-br {
    bottom: -1px;
    right: -1px;
    border-bottom: 2px solid var(--border-silver);
    border-right: 2px solid var(--border-silver);
}

/* --- Mask Watermark --- */
.mask-watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(8deg);
    width: 160px;
    height: 120px;
    opacity: 0.05;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

/* --- Card Content --- */
.card-label {
    font-family: 'Fira Code', monospace;
    font-weight: 400;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    font-variant-ligatures: none;
    display: block;
    margin-bottom: 0.75rem;
}

.card-chrome .card-label {
    color: var(--bg-secondary);
}

.card-title {
    font-family: 'Fira Sans', sans-serif;
    font-weight: 500;
    font-size: clamp(1rem, 1.8vw, 1.5rem);
    letter-spacing: 0.06em;
    color: var(--surface-chrome);
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.card-chrome .card-title {
    color: var(--bg-primary);
}

.card-chrome:hover .card-title {
    color: var(--accent-rose);
}

.card-body {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.card-body-dark {
    color: var(--bg-secondary);
}

/* --- Bar Charts --- */
.bar-chart {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
}

.bar-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.bar-label {
    font-family: 'Fira Code', monospace;
    font-weight: 400;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    font-variant-ligatures: none;
    min-width: 80px;
    text-align: right;
}

.card-chrome .bar-label {
    color: var(--bg-secondary);
}

.bar-track {
    flex: 1;
    height: 6px;
    background-color: var(--bg-primary);
    position: relative;
}

.card-chrome .bar-track {
    background-color: var(--border-silver);
}

.bar-fill {
    height: 100%;
    background-color: var(--surface-chrome);
    width: 0;
    transition: width 1s ease-out;
}

.bar-fill-dark {
    background-color: var(--bg-secondary);
}

.bar-fill.animated {
    /* Width set via JS data-width attribute */
}

/* --- Ring Charts --- */
.ring-chart-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 1.5rem;
}

.ring-chart {
    width: 100px;
    height: 100px;
}

.ring-segment {
    transform-origin: 50% 50%;
}

/* --- Grid Overlay on Cards --- */
.grid-overlay-card {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background-image:
        linear-gradient(to right, rgba(192, 192, 192, 0.08) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(192, 192, 192, 0.08) 1px, transparent 1px);
    background-size: 40px 40px;
}

/* --- Interstitials --- */
.interstitial {
    padding: 5rem 2rem;
    text-align: center;
}

.interstitial-stars-top,
.interstitial-stars-bottom {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.interstitial-stars-top.visible,
.interstitial-stars-bottom.visible {
    opacity: 1;
}

.interstitial-stars-top span,
.interstitial-stars-bottom span {
    font-size: 0.6rem;
    color: var(--accent-gold);
    opacity: 0.6;
}

.interstitial-text {
    font-family: 'Fira Sans', sans-serif;
    font-weight: 500;
    font-size: clamp(1rem, 1.8vw, 1.5rem);
    letter-spacing: 0.06em;
    color: var(--accent-rose);
    padding: 2rem 0;
    max-width: 700px;
    margin: 0 auto;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.interstitial-text.visible {
    opacity: 1;
}

/* --- Departure / Closing Star Field --- */
#departure {
    position: relative;
    width: 100%;
    min-height: 100vh;
    background-color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.departure-content {
    position: relative;
    z-index: 10;
}

.departure-title {
    font-family: 'Fira Sans', sans-serif;
    font-weight: 300;
    font-size: clamp(2rem, 5vw, 4rem);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--surface-chrome);
    margin-bottom: 1.5rem;
}

.departure-tagline {
    font-family: 'Fira Sans', sans-serif;
    font-weight: 500;
    font-size: 1.1rem;
    letter-spacing: 0.04em;
    color: var(--accent-rose);
    margin-bottom: 3rem;
    max-width: 600px;
}

.cta-link {
    font-family: 'Fira Sans', sans-serif;
    font-weight: 500;
    font-size: 1rem;
    letter-spacing: 0.06em;
    color: var(--accent-rose);
    text-decoration: none;
    transition: color 0.3s ease;
    display: inline-block;
    margin-top: 1rem;
}

.cta-link:hover {
    color: var(--accent-gold);
}

/* --- Footer --- */
#site-footer {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-silver);
    padding: 2rem;
}

.footer-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
}

.footer-text {
    font-family: 'Fira Sans', sans-serif;
    font-weight: 300;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.footer-star {
    font-size: 0.5rem;
    color: var(--accent-gold);
    opacity: 0.6;
}

.footer-copy {
    font-family: 'Source Sans 3', sans-serif;
    font-size: 0.75rem;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
}

/* --- Responsive --- */
@media (max-width: 900px) {
    .nav-inner {
        flex-direction: column;
        gap: 0.75rem;
    }

    .card-grid {
        display: flex;
        flex-direction: column;
        gap: 1.5rem;
    }

    .cluster-a .card,
    .cluster-b .card,
    .cluster-c .card {
        grid-column: auto;
    }

    .footer-inner {
        flex-direction: column;
        gap: 0.75rem;
    }
}

@media (max-width: 600px) {
    .nav-links {
        gap: 0.5rem;
    }

    .nav-links a {
        font-size: 0.7rem;
    }

    .hero-title {
        letter-spacing: 0.06em;
    }

    .card {
        padding: 1.5rem;
    }
}