/* ==========================================================================
   monopole.city — isometric technical-doc speculative blueprint
   Palette: #f0f4f8 #1a2d44 #0891b2 #f59e0b #e2e8f0 #10b981 #1e3a5f
   Type: Exo 2 (display), Nunito Sans (body), Share Tech Mono (data)
   ========================================================================== */

:root {
    --c-sky: #f0f4f8;
    --c-navy: #1a2d44;
    --c-cyan: #0891b2;
    --c-yellow: #f59e0b;
    --c-grid: #e2e8f0;
    --c-green: #10b981;
    --c-deep: #1e3a5f;

    --f-display: "Exo 2", system-ui, sans-serif;
    --f-body: "Nunito Sans", system-ui, sans-serif;
    --f-mono: "Share Tech Mono", "SFMono-Regular", monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--f-body);
    font-weight: 400;
    color: var(--c-navy);
    background: var(--c-sky);
    line-height: 1.7;
    font-size: 0.95rem;
    overflow-x: hidden;
}

/* ==========================================================================
   Progress Indicator
   ========================================================================== */

.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: linear-gradient(90deg, var(--c-cyan) 0%, var(--c-yellow) 100%);
    z-index: 1000;
    transition: width 0.1s linear;
    box-shadow: 0 0 8px rgba(8, 145, 178, 0.4);
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: rgba(240, 244, 248, 0.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--c-grid);
    z-index: 900;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--c-sky);
    border: 1px solid var(--c-grid);
    border-radius: 4px;
}

.brand-name {
    font-family: var(--f-display);
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: 0.02em;
    color: var(--c-navy);
}

.site-nav {
    display: flex;
    gap: 1.6rem;
}

.site-nav a {
    font-family: var(--f-mono);
    font-size: 0.8rem;
    color: var(--c-deep);
    text-decoration: none;
    letter-spacing: 0.06em;
    padding-bottom: 2px;
    border-bottom: 1px dashed transparent;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.site-nav a:hover,
.site-nav a.is-active {
    color: var(--c-cyan);
    border-bottom-color: var(--c-cyan);
}

.status-tag {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--f-mono);
    font-size: 0.75rem;
    color: var(--c-deep);
    letter-spacing: 0.06em;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--c-green);
    box-shadow: 0 0 8px var(--c-green);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.85); }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    position: relative;
    min-height: 100vh;
    padding: 8rem 2rem 4rem;
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
    gap: 3rem;
    overflow: hidden;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(30deg, var(--c-grid) 1px, transparent 1px),
        linear-gradient(150deg, var(--c-grid) 1px, transparent 1px);
    background-size: 40px 23px;
    opacity: 0.5;
    pointer-events: none;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 640px;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 1.6rem;
}

.meta-tag {
    font-family: var(--f-mono);
    font-size: 0.7rem;
    color: var(--c-deep);
    background: var(--c-sky);
    border: 1px solid var(--c-grid);
    padding: 0.3rem 0.7rem;
    letter-spacing: 0.08em;
    border-radius: 2px;
}

.meta-tag:first-child {
    border-color: var(--c-cyan);
    color: var(--c-cyan);
}

.hero-title {
    font-family: var(--f-display);
    font-weight: 600;
    font-size: clamp(2rem, 4vw, 3.5rem);
    line-height: 1.1;
    color: var(--c-navy);
    margin-bottom: 1.6rem;
    letter-spacing: -0.01em;
}

.title-accent {
    color: var(--c-cyan);
    position: relative;
    display: inline-block;
}

.title-accent::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -4px;
    height: 4px;
    background: var(--c-yellow);
    transform: skewX(-12deg);
}

.hero-lede {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--c-deep);
    margin-bottom: 2rem;
    max-width: 560px;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.btn-tour {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 1.6rem;
    background: var(--c-navy);
    color: var(--c-sky);
    font-family: var(--f-display);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    border: 2px solid var(--c-navy);
    letter-spacing: 0.02em;
    transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 4px 4px 0 var(--c-cyan);
}

.btn-tour:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0 var(--c-cyan);
    background: var(--c-deep);
}

.btn-tour svg {
    transition: transform 0.2s ease;
}

.btn-tour:hover svg {
    transform: translateX(4px);
}

.hero-coords {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    font-family: var(--f-mono);
    font-size: 0.75rem;
    color: var(--c-deep);
    padding-left: 1.5rem;
    border-left: 2px solid var(--c-grid);
    letter-spacing: 0.05em;
}

.hero-diagram {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    padding: 1rem;
}

.iso-diagram {
    width: 100%;
    max-width: 400px;
    height: auto;
    filter: drop-shadow(4px 4px 0 rgba(30, 58, 95, 0.08));
}

.diagram-label {
    font-family: var(--f-mono);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    color: var(--c-deep);
    background: var(--c-sky);
    padding: 0.3rem 0.7rem;
    border: 1px solid var(--c-grid);
}

/* Skyline silhouettes */
.skyline {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    pointer-events: none;
    height: 64px;
}

.skyline-hero {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1;
    padding: 0 2rem;
    opacity: 0.8;
}

.skyline-district {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 0 3rem;
    opacity: 0.7;
}

.skyline-manifest {
    margin-top: 4rem;
    opacity: 0.7;
}

.hero-scrollhint {
    position: absolute;
    bottom: 2rem;
    right: 2rem;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--f-mono);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    color: var(--c-deep);
}

.scrollhint-line {
    width: 1px;
    height: 40px;
    background: var(--c-deep);
    position: relative;
    overflow: hidden;
}

.scrollhint-line::after {
    content: "";
    position: absolute;
    top: -40px;
    left: 0;
    width: 1px;
    height: 40px;
    background: var(--c-cyan);
    animation: scroll-tick 2.2s ease-in-out infinite;
}

@keyframes scroll-tick {
    0% { top: -40px; }
    100% { top: 40px; }
}

/* ==========================================================================
   Tour Section (Horizontal Panorama)
   ========================================================================== */

.tour {
    position: relative;
    background: var(--c-sky);
    border-top: 1px solid var(--c-grid);
}

.tour-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
    padding: 4rem 2rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.tour-titleblock {
    max-width: 720px;
}

.tour-eyebrow {
    display: inline-block;
    font-family: var(--f-mono);
    font-size: 0.78rem;
    letter-spacing: 0.16em;
    color: var(--c-cyan);
    margin-bottom: 0.8rem;
    padding: 0.25rem 0;
    border-top: 1px solid var(--c-cyan);
    border-bottom: 1px solid var(--c-cyan);
}

.tour-title {
    font-family: var(--f-display);
    font-weight: 600;
    font-size: clamp(1.8rem, 3.2vw, 2.8rem);
    line-height: 1.15;
    margin-bottom: 1rem;
    color: var(--c-navy);
}

.tour-sub {
    font-size: 1rem;
    color: var(--c-deep);
    max-width: 600px;
}

.tour-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    padding: 1rem 1.2rem;
    background: var(--c-sky);
    border: 1px solid var(--c-grid);
    border-left: 3px solid var(--c-cyan);
}

.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--f-mono);
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    color: var(--c-deep);
}

.legend-swatch {
    width: 14px;
    height: 14px;
    background: var(--c, var(--c-cyan));
    border: 1px solid var(--c-deep);
    display: inline-block;
}

/* Panorama */
.panorama {
    display: flex;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--c-cyan) var(--c-grid);
    height: 86vh;
    min-height: 640px;
    border-top: 1px dashed var(--c-grid);
    border-bottom: 1px dashed var(--c-grid);
}

.panorama::-webkit-scrollbar {
    height: 8px;
}

.panorama::-webkit-scrollbar-track {
    background: var(--c-grid);
}

.panorama::-webkit-scrollbar-thumb {
    background: var(--c-cyan);
    border-radius: 4px;
}

.district {
    position: relative;
    flex: 0 0 100vw;
    min-width: 100vw;
    height: 100%;
    scroll-snap-align: start;
    padding: 3rem;
    overflow: hidden;
    display: grid;
    grid-template-rows: auto 1fr;
    background: var(--c-sky);
}

.district-bar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 8px;
    background: var(--district-color);
    z-index: 5;
}

.district-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(30deg, var(--c-grid) 1px, transparent 1px),
        linear-gradient(150deg, var(--c-grid) 1px, transparent 1px);
    background-size: 40px 23px;
    opacity: 0.55;
    pointer-events: none;
    z-index: 0;
}

.district-head {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: auto auto 1fr;
    align-items: center;
    gap: 1rem;
    padding-top: 1rem;
    margin-bottom: 2rem;
}

.district-index {
    font-family: var(--f-display);
    font-weight: 700;
    font-size: clamp(3rem, 6vw, 5rem);
    line-height: 1;
    color: var(--district-color);
    letter-spacing: -0.04em;
}

.district-meta {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    border-left: 2px solid var(--district-color);
    padding-left: 1rem;
}

.district-tag {
    font-family: var(--f-mono);
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    color: var(--district-color);
    font-weight: 700;
}

.district-coord {
    font-family: var(--f-mono);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    color: var(--c-deep);
}

.district-name {
    font-family: var(--f-display);
    font-weight: 600;
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    color: var(--c-navy);
    text-align: right;
    letter-spacing: -0.01em;
    line-height: 1.1;
}

.district-body {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr) minmax(0, 1fr);
    grid-template-rows: auto auto;
    gap: 1.5rem 2rem;
    align-content: start;
    padding-bottom: 5rem;
}

.district-lede {
    grid-column: 1 / 2;
    grid-row: 1 / 2;
    transform: translateY(0.5rem);
}

.district-lede p {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--c-deep);
    border-top: 2px solid var(--district-color);
    padding-top: 1rem;
}

.district-stats {
    grid-column: 1 / 2;
    grid-row: 2 / 3;
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem;
    align-content: start;
}

.district-stats li {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    padding: 0.6rem 0.8rem;
    background: var(--c-sky);
    border: 1px solid var(--c-grid);
    border-left: 3px solid var(--district-color);
}

.stat-k {
    font-family: var(--f-mono);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: var(--c-deep);
    text-transform: uppercase;
}

.stat-v {
    font-family: var(--f-display);
    font-weight: 600;
    font-size: 1rem;
    color: var(--c-navy);
}

.district-iso {
    grid-column: 2 / 3;
    grid-row: 1 / 3;
    align-self: center;
    justify-self: center;
    width: 100%;
    max-width: 360px;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.5);
    border: 1px dashed var(--c-grid);
}

.district-iso svg {
    width: 100%;
    height: auto;
}

.district-callout {
    grid-column: 3 / 4;
    grid-row: 1 / 3;
    align-self: center;
    padding: 1.6rem 1.4rem;
    border: 1px solid var(--c-grid);
    border-top: 3px solid var(--district-color);
    background: rgba(255, 255, 255, 0.6);
    position: relative;
}

.callout-mark {
    position: absolute;
    top: -10px;
    left: 1rem;
    background: var(--c-sky);
    padding: 0 0.4rem;
    color: var(--district-color);
    font-size: 1rem;
}

.district-callout p {
    font-family: var(--f-display);
    font-weight: 500;
    font-size: 1.15rem;
    line-height: 1.5;
    color: var(--c-navy);
    margin-bottom: 0.8rem;
    font-style: italic;
}

.callout-cite {
    font-family: var(--f-mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    color: var(--c-deep);
}

/* Tour controls */
.tour-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.2rem;
    padding: 1.6rem 2rem 3rem;
}

.tour-btn {
    width: 40px;
    height: 40px;
    border: 1px solid var(--c-deep);
    background: var(--c-sky);
    color: var(--c-deep);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
    font: inherit;
}

.tour-btn:hover {
    background: var(--c-navy);
    color: var(--c-sky);
    transform: translateY(-2px);
}

.tour-dots {
    display: flex;
    gap: 0.4rem;
}

.tour-dot {
    font-family: var(--f-mono);
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    width: 40px;
    height: 40px;
    border: 1px solid var(--c-grid);
    background: transparent;
    color: var(--c-deep);
    cursor: pointer;
    transition: all 0.2s ease;
}

.tour-dot:hover {
    border-color: var(--c-cyan);
    color: var(--c-cyan);
}

.tour-dot.is-active {
    background: var(--c-cyan);
    color: var(--c-sky);
    border-color: var(--c-cyan);
}

/* ==========================================================================
   Manifest Section
   ========================================================================== */

.manifest {
    position: relative;
    padding: 6rem 2rem;
    background: var(--c-navy);
    color: var(--c-sky);
    overflow: hidden;
    border-top: 1px solid var(--c-grid);
}

.manifest-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(30deg, rgba(226, 232, 240, 0.08) 1px, transparent 1px),
        linear-gradient(150deg, rgba(226, 232, 240, 0.08) 1px, transparent 1px);
    background-size: 40px 23px;
    pointer-events: none;
}

.manifest-inner {
    position: relative;
    max-width: 1100px;
    margin: 0 auto;
}

.manifest-eyebrow {
    display: inline-block;
    font-family: var(--f-mono);
    font-size: 0.78rem;
    letter-spacing: 0.16em;
    color: var(--c-yellow);
    margin-bottom: 1rem;
    padding: 0.25rem 0;
    border-top: 1px solid var(--c-yellow);
    border-bottom: 1px solid var(--c-yellow);
}

.manifest-title {
    font-family: var(--f-display);
    font-weight: 600;
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1.1;
    color: var(--c-sky);
    margin-bottom: 1.4rem;
    letter-spacing: -0.01em;
}

.manifest-lede {
    font-size: 1.15rem;
    line-height: 1.7;
    color: var(--c-grid);
    max-width: 720px;
    margin-bottom: 3rem;
}

.manifest-list {
    list-style: none;
    counter-reset: manifest;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.2rem;
    margin-bottom: 4rem;
}

.manifest-list li {
    display: flex;
    gap: 1rem;
    padding: 1.4rem;
    background: rgba(240, 244, 248, 0.05);
    border: 1px solid rgba(240, 244, 248, 0.12);
    border-top: 3px solid var(--c-cyan);
    transition: transform 0.3s ease, background 0.3s ease;
}

.manifest-list li:nth-child(2) { border-top-color: var(--c-yellow); }
.manifest-list li:nth-child(3) { border-top-color: var(--c-green); }
.manifest-list li:nth-child(4) { border-top-color: var(--c-grid); }

.manifest-list li:hover {
    transform: translateY(-4px);
    background: rgba(240, 244, 248, 0.08);
}

.manifest-num {
    font-family: var(--f-display);
    font-weight: 700;
    font-size: 1.6rem;
    color: var(--c-yellow);
    line-height: 1;
}

.manifest-list h3 {
    font-family: var(--f-display);
    font-weight: 600;
    font-size: 1.15rem;
    color: var(--c-sky);
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.manifest-list p {
    font-size: 0.92rem;
    line-height: 1.6;
    color: var(--c-grid);
}

.manifest-stamp {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    padding: 1.4rem;
    border: 1px solid rgba(240, 244, 248, 0.18);
    background: rgba(0, 0, 0, 0.2);
    margin-top: 2rem;
}

.stamp-row {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.stamp-label {
    font-family: var(--f-mono);
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    color: var(--c-yellow);
}

.stamp-val {
    font-family: var(--f-mono);
    font-size: 0.95rem;
    color: var(--c-sky);
    letter-spacing: 0.08em;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
    background: var(--c-deep);
    color: var(--c-grid);
    padding: 2rem;
    border-top: 4px solid var(--c-cyan);
}

.footer-row {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 0.8rem;
    font-family: var(--f-body);
    font-size: 0.85rem;
}

.footer-coords {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
    font-family: var(--f-mono);
    font-size: 0.74rem;
    letter-spacing: 0.1em;
    color: var(--c-grid);
    opacity: 0.7;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 960px) {
    .hero {
        grid-template-columns: 1fr;
        padding: 7rem 1.5rem 4rem;
        gap: 2rem;
    }

    .site-header {
        padding: 0.8rem 1.2rem;
    }

    .site-nav {
        display: none;
    }

    .status-tag span:not(.status-dot) {
        font-size: 0.65rem;
    }

    .district {
        padding: 2rem 1.5rem;
    }

    .district-head {
        grid-template-columns: auto 1fr;
        gap: 0.6rem;
    }

    .district-name {
        grid-column: 1 / -1;
        text-align: left;
        margin-top: 0.6rem;
    }

    .district-body {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }

    .district-lede,
    .district-stats,
    .district-iso,
    .district-callout {
        grid-column: 1 / -1;
        grid-row: auto;
    }

    .panorama {
        height: auto;
        min-height: 0;
    }

    .district {
        height: auto;
        min-height: 100vh;
    }

    .manifest {
        padding: 4rem 1.5rem;
    }
}

@media (max-width: 600px) {
    .hero-title {
        font-size: 2.2rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.2rem;
    }

    .hero-coords {
        padding-left: 0;
        border-left: none;
        flex-direction: row;
        gap: 1rem;
        flex-wrap: wrap;
    }

    .district-stats {
        grid-template-columns: 1fr;
    }

    .footer-row {
        flex-direction: column;
    }
}