/* =====================================================================
   monopole.city -- Bioluminescent Urbanism
   Palette: Abyssal Ink + Neon-Electric organisms
   Layout: F-pattern collapsing into a centered singularity
   ===================================================================== */

:root {
    --abyssal-ink: #0A1628;
    --midnight-reef: #0F2137;
    --deep-current: #132D4A;
    --deeper-current: #1A3A5C;
    --electric-chartreuse: #E0FF4F;
    --neon-mint: #00FFC6;
    --neon-magenta: #FF2D95;
    --voltage-coral: #FF6B35;
    --phosphor-white: #E0ECFF;
    --reef-shadow: #7B93B0;

    --glass-fill: rgba(15, 33, 55, 0.55);
    --glass-fill-strong: rgba(15, 33, 55, 0.78);
    --glass-border: rgba(224, 255, 79, 0.12);
    --glass-border-hover: rgba(0, 255, 198, 0.35);

    --ease-expo-out: cubic-bezier(0.16, 1, 0.3, 1);
    --font-display: 'Josefin Sans', 'Inter', sans-serif;
    --font-body: 'Nunito Sans', 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    background: var(--abyssal-ink);
}

body {
    font-family: var(--font-body);
    color: var(--phosphor-white);
    background: linear-gradient(170deg, var(--abyssal-ink) 0%, var(--midnight-reef) 40%, var(--deep-current) 100%);
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    position: relative;
}

/* =====================================================================
   ATMOSPHERE LAYER (fixed background -- gradient + plankton + fish)
   ===================================================================== */
.atmosphere {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.bioluminescent-hotspots {
    position: absolute;
    inset: -10%;
    background:
        radial-gradient(circle at 20% 30%, rgba(0, 255, 198, 0.10) 0%, transparent 35%),
        radial-gradient(circle at 80% 60%, rgba(224, 255, 79, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 50% 90%, rgba(255, 45, 149, 0.07) 0%, transparent 45%),
        radial-gradient(circle at 90% 15%, rgba(255, 107, 53, 0.06) 0%, transparent 30%);
    animation: hotspots-drift 28s ease-in-out infinite alternate;
}

@keyframes hotspots-drift {
    0%   { transform: translate(0, 0) scale(1); }
    50%  { transform: translate(2%, -1%) scale(1.05); }
    100% { transform: translate(-1%, 2%) scale(1); }
}

/* Plankton field -- particles created by JS, styled here */
.plankton-field {
    position: absolute;
    inset: 0;
}

.plankton {
    position: absolute;
    border-radius: 50%;
    background: var(--electric-chartreuse);
    box-shadow: 0 0 6px rgba(224, 255, 79, 0.6);
    will-change: transform, opacity;
    animation: plankton-drift linear infinite;
}

.plankton.mint {
    background: var(--neon-mint);
    box-shadow: 0 0 6px rgba(0, 255, 198, 0.6);
}

.plankton.magenta {
    background: var(--neon-magenta);
    box-shadow: 0 0 5px rgba(255, 45, 149, 0.6);
}

@keyframes plankton-drift {
    0% {
        transform: translate(0, 0) scale(1);
        opacity: 0;
    }
    10% { opacity: 0.4; }
    50% {
        transform: translate(40px, -60px) scale(1.2);
        opacity: 0.5;
    }
    90% { opacity: 0.35; }
    100% {
        transform: translate(-30px, 80px) scale(0.8);
        opacity: 0;
    }
}

/* Drifting fish (CSS-only horizontal traversal) */
.fish-field {
    position: absolute;
    inset: 0;
}

.drift-fish {
    position: absolute;
    will-change: transform;
    opacity: 0.6;
    animation: fish-drift linear infinite, fish-bob ease-in-out infinite alternate;
}

.drift-fish.slow {
    animation-duration: 38s, 5s;
}

.drift-fish.medium {
    animation-duration: 26s, 4s;
}

.drift-fish.fast {
    animation-duration: 18s, 3s;
}

@keyframes fish-drift {
    from { transform: translateX(-15vw); }
    to   { transform: translateX(115vw); }
}

@keyframes fish-bob {
    from { margin-top: 0; }
    to   { margin-top: 24px; }
}

.drift-fish svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* Slowed currents in the deep cascade section */
.section-cascade ~ * .drift-fish,
body.deep-zone .drift-fish {
    animation-duration: 50s, 6s;
}

/* =====================================================================
   SCROLL MARKERS
   ===================================================================== */
.scroll-markers {
    position: fixed;
    right: 28px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 50;
    display: flex;
    flex-direction: column;
    gap: 22px;
    pointer-events: auto;
}

.marker {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--reef-shadow);
    font-family: var(--font-display);
    font-size: 11px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    cursor: pointer;
    transition: color 300ms var(--ease-expo-out);
}

.marker-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(123, 147, 176, 0.3);
    border: 1px solid rgba(123, 147, 176, 0.5);
    transition: background 300ms var(--ease-expo-out), box-shadow 300ms var(--ease-expo-out), transform 300ms var(--ease-expo-out);
}

.marker-tooltip {
    opacity: 0;
    transform: translateX(8px);
    transition: opacity 300ms var(--ease-expo-out), transform 300ms var(--ease-expo-out);
    color: var(--neon-mint);
    white-space: nowrap;
}

.marker:hover .marker-tooltip,
.marker.active .marker-tooltip {
    opacity: 1;
    transform: translateX(0);
}

.marker:hover .marker-dot,
.marker.active .marker-dot {
    background: var(--electric-chartreuse);
    border-color: var(--electric-chartreuse);
    box-shadow: 0 0 12px rgba(224, 255, 79, 0.7);
    transform: scale(1.15);
}

.marker.active {
    color: var(--electric-chartreuse);
}

/* =====================================================================
   SECTION COMMON
   ===================================================================== */
.section {
    position: relative;
    width: 100%;
    z-index: 2;
}

.section-header {
    padding: 80px 8% 40px;
}

.section-label {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--neon-magenta);
    margin-bottom: 14px;
}

.section-title {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: clamp(36px, 5vw, 64px);
    color: var(--electric-chartreuse);
    letter-spacing: 0.04em;
    text-shadow: 0 0 30px rgba(224, 255, 79, 0.35);
    line-height: 1.05;
    max-width: 18ch;
}

/* =====================================================================
   SECTION 0: HERO SKYLINE
   ===================================================================== */
.section-hero {
    height: 100vh;
    min-height: 720px;
    overflow: hidden;
    display: block;
}

.city-mark {
    position: absolute;
    top: 7vh;
    left: 6vw;
    z-index: 5;
    animation: zoom-focus-in 1000ms var(--ease-expo-out) 200ms both;
}

.city-name {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: clamp(48px, 7vw, 92px);
    color: var(--electric-chartreuse);
    letter-spacing: 0.08em;
    line-height: 1;
    text-shadow:
        0 0 20px rgba(224, 255, 79, 0.4),
        0 0 50px rgba(224, 255, 79, 0.2);
    animation: city-name-flicker 8s ease-in-out infinite;
}

@keyframes city-name-flicker {
    0%, 100% { text-shadow: 0 0 20px rgba(224, 255, 79, 0.4), 0 0 50px rgba(224, 255, 79, 0.2); }
    47%      { text-shadow: 0 0 20px rgba(224, 255, 79, 0.4), 0 0 50px rgba(224, 255, 79, 0.2); }
    48%      { text-shadow: 0 0 8px rgba(224, 255, 79, 0.2); }
    49%      { text-shadow: 0 0 20px rgba(224, 255, 79, 0.4), 0 0 50px rgba(224, 255, 79, 0.2); }
    72%      { text-shadow: 0 0 30px rgba(224, 255, 79, 0.6), 0 0 70px rgba(0, 255, 198, 0.3); }
}

.city-meta {
    margin-top: 10px;
    font-family: var(--font-display);
    font-weight: 400;
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--neon-mint);
}

.skyline-svg {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50vh;
    z-index: 1;
    opacity: 0.85;
}

.node-pulse {
    animation: node-pulse 3s ease-in-out infinite;
    filter: drop-shadow(0 0 6px currentColor);
}

@keyframes node-pulse {
    0%, 100% { opacity: 0.9; transform: scale(1); transform-origin: center; transform-box: fill-box; }
    50%      { opacity: 0.4; transform: scale(1.6); transform-origin: center; transform-box: fill-box; }
}

.hero-tagline-card {
    position: absolute;
    top: 38%;
    right: 6vw;
    width: 320px;
    padding: 28px 28px 32px;
    z-index: 4;
    animation: zoom-focus-in 1000ms var(--ease-expo-out) 700ms both;
}

.tagline-text {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 26px;
    color: var(--phosphor-white);
    letter-spacing: 0.02em;
    line-height: 1.25;
    margin-top: 12px;
    margin-bottom: 14px;
}

.tagline-sub {
    font-size: 13px;
    color: var(--reef-shadow);
    line-height: 1.6;
}

.clownfish-anchor {
    position: absolute;
    bottom: -18px;
    right: 14px;
    width: 110px;
    height: 56px;
    filter: drop-shadow(0 0 8px rgba(255, 107, 53, 0.4));
    animation: clownfish-sway 5s ease-in-out infinite alternate;
}

.clownfish-1 {
    transform-origin: 30px 28px;
    animation: clownfish-wiggle 1.2s ease-in-out infinite alternate;
}

.clownfish-2 {
    transform-origin: 90px 40px;
    animation: clownfish-wiggle 1.4s ease-in-out infinite alternate-reverse;
}

@keyframes clownfish-sway {
    from { transform: translateX(0) rotate(-2deg); }
    to   { transform: translateX(6px) rotate(3deg); }
}

@keyframes clownfish-wiggle {
    from { transform: scaleX(1) translateX(0); }
    to   { transform: scaleX(1.04) translateX(-2px); }
}

.hero-coordinates {
    position: absolute;
    bottom: 4vh;
    left: 6vw;
    display: flex;
    gap: 28px;
    z-index: 5;
    font-family: var(--font-display);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--neon-mint);
    opacity: 0.7;
    animation: zoom-focus-in 1000ms var(--ease-expo-out) 1100ms both;
}

.hero-coordinates span:nth-child(2) { color: var(--neon-magenta); }
.hero-coordinates span:nth-child(3) { color: var(--electric-chartreuse); }

/* =====================================================================
   GLASS CARD SYSTEM
   ===================================================================== */
.glass-card {
    background: var(--glass-fill);
    backdrop-filter: blur(16px) saturate(1.4);
    -webkit-backdrop-filter: blur(16px) saturate(1.4);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    padding: 24px;
    position: relative;
    transition:
        transform 300ms var(--ease-expo-out),
        border-color 300ms var(--ease-expo-out),
        box-shadow 300ms var(--ease-expo-out);
}

.glass-card:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: var(--glass-border-hover);
    box-shadow:
        0 12px 48px rgba(0, 255, 198, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.card-label {
    display: inline-block;
    font-family: var(--font-display);
    font-weight: 400;
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--neon-magenta);
}

.card-label.mint      { color: var(--neon-mint); }
.card-label.chartreuse{ color: var(--electric-chartreuse); }
.card-label.magenta   { color: var(--neon-magenta); }
.card-label.coral     { color: var(--voltage-coral); }

/* =====================================================================
   SECTION 1: DISTRICTS
   ===================================================================== */
.section-districts {
    padding: 0 0 120px;
    min-height: 100vh;
}

.district-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 40px 8% 0;
    max-width: 1600px;
    margin: 0 auto;
}

.district-card {
    min-height: 400px;
    display: flex;
    flex-direction: column;
    padding: 28px 26px 24px;
    opacity: 0;
    transform: scale(0.85);
}

.district-card.in-view {
    animation: zoom-focus-in 900ms var(--ease-expo-out) forwards;
}

.district-card[data-stagger="0"].in-view { animation-delay: 0ms; }
.district-card[data-stagger="1"].in-view { animation-delay: 200ms; }
.district-card[data-stagger="2"].in-view { animation-delay: 400ms; }

.district-fish {
    width: 60px;
    height: 40px;
    margin-bottom: 14px;
    filter: drop-shadow(0 0 8px rgba(0, 255, 198, 0.3));
}

.district-card:nth-child(2) .district-fish { filter: drop-shadow(0 0 8px rgba(255, 45, 149, 0.4)); }
.district-card:nth-child(3) .district-fish { filter: drop-shadow(0 0 8px rgba(224, 255, 79, 0.4)); }

.district-name {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 28px;
    color: var(--neon-mint);
    letter-spacing: 0.02em;
    margin: 8px 0 14px;
}

.district-card:nth-child(2) .district-name { color: var(--neon-magenta); }
.district-card:nth-child(3) .district-name { color: var(--electric-chartreuse); }

.district-desc {
    font-size: 16px;
    line-height: 1.7;
    color: rgba(224, 236, 255, 0.85);
    margin-bottom: 24px;
    flex: 1;
}

.coral-divider {
    width: 100%;
    height: 30px;
    margin-top: auto;
}

/* =====================================================================
   SECTION 2: DEEP CASCADE
   ===================================================================== */
.section-cascade {
    padding: 0 0 160px;
    min-height: 200vh;
    background:
        linear-gradient(180deg,
            rgba(15, 33, 55, 0) 0%,
            rgba(15, 33, 55, 0.4) 30%,
            rgba(10, 22, 40, 0.7) 100%
        );
}

.cascade-header {
    padding-left: 8%;
    padding-right: 8%;
}

.cascade-stack {
    display: flex;
    flex-direction: column;
    gap: 80px;
    padding: 60px 0 0;
    max-width: 60vw;
}

.cascade-card {
    width: 100%;
    min-height: 160px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 26px 30px;
    border-left: 2px solid var(--neon-mint);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.05),
        -1px 0 16px rgba(0, 255, 198, 0.15);
    opacity: 0;
    transform: translateY(20px) scale(0.92);
}

.cascade-card.in-view {
    animation: cascade-enter 1000ms var(--ease-expo-out) forwards;
}

@keyframes cascade-enter {
    from { opacity: 0; transform: translateY(20px) scale(0.92); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Indentation cascade (3% per card starting at 8%) */
.cascade-card[data-indent="0"] { margin-left: 8%; border-left-color: var(--neon-mint); }
.cascade-card[data-indent="1"] { margin-left: 11%; border-left-color: var(--neon-magenta); box-shadow: 0 8px 32px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.05), -1px 0 16px rgba(255,45,149,0.18); }
.cascade-card[data-indent="2"] { margin-left: 14%; border-left-color: var(--electric-chartreuse); box-shadow: 0 8px 32px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.05), -1px 0 16px rgba(224,255,79,0.18); }
.cascade-card[data-indent="3"] { margin-left: 17%; border-left-color: var(--voltage-coral); box-shadow: 0 8px 32px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.05), -1px 0 16px rgba(255,107,53,0.18); }
.cascade-card[data-indent="4"] { margin-left: 20%; border-left-color: var(--electric-chartreuse); box-shadow: 0 8px 32px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.05), -1px 0 16px rgba(224,255,79,0.18); }

.panel-fish {
    flex-shrink: 0;
    width: 50px;
    height: 30px;
    margin-top: 4px;
    filter: drop-shadow(0 0 6px rgba(0, 255, 198, 0.4));
}

.panel-body {
    flex: 1;
}

.panel-title {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 22px;
    color: var(--phosphor-white);
    margin: 8px 0 8px;
    letter-spacing: 0.01em;
}

.panel-text {
    font-size: 15px;
    line-height: 1.7;
    color: rgba(224, 236, 255, 0.78);
}

.panel-index {
    position: absolute;
    top: 16px;
    right: 22px;
    font-family: var(--font-display);
    font-size: 11px;
    letter-spacing: 0.18em;
    color: var(--reef-shadow);
}

/* =====================================================================
   SECTION 3: MONOPOLE CORE
   ===================================================================== */
.section-core {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 0;
    position: relative;
    background:
        radial-gradient(circle at 50% 50%, rgba(0, 255, 198, 0.05) 0%, transparent 60%),
        linear-gradient(180deg, rgba(10, 22, 40, 0.5) 0%, rgba(10, 22, 40, 0.95) 100%);
}

.orbit-field {
    position: absolute;
    inset: 0;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60px;
    height: 30px;
    margin-top: -15px;
    margin-left: -30px;
    transform-origin: center;
    will-change: transform;
}

.orbit-fish {
    width: 100%;
    height: 100%;
    display: block;
    filter: drop-shadow(0 0 10px currentColor);
    will-change: transform;
}

.orbit-1 { animation: orbit-path-1 22s linear infinite; }
.orbit-2 { animation: orbit-path-2 28s linear infinite reverse; }
.orbit-3 { animation: orbit-path-3 32s linear infinite; }
.orbit-4 { animation: orbit-path-1 26s linear infinite reverse; animation-delay: -8s; }
.orbit-5 { animation: orbit-path-2 36s linear infinite; animation-delay: -12s; }
.orbit-6 { animation: orbit-path-3 30s linear infinite reverse; animation-delay: -5s; }

@keyframes orbit-path-1 {
    from { transform: rotate(0deg) translateX(420px) rotate(0deg); }
    to   { transform: rotate(360deg) translateX(420px) rotate(-360deg); }
}

@keyframes orbit-path-2 {
    from { transform: rotate(0deg) translateX(360px) translateY(80px) rotate(0deg); }
    to   { transform: rotate(360deg) translateX(360px) translateY(80px) rotate(-360deg); }
}

@keyframes orbit-path-3 {
    from { transform: rotate(0deg) translateX(480px) translateY(-60px) rotate(0deg); }
    to   { transform: rotate(360deg) translateX(480px) translateY(-60px) rotate(-360deg); }
}

.core-card {
    width: 60vw;
    max-width: 900px;
    min-width: 320px;
    height: 70vh;
    min-height: 520px;
    padding: 36px 40px 32px;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 5;
    opacity: 0;
    transform: scale(0.7);
    background: var(--glass-fill-strong);
    border: 1px solid;
    border-image: linear-gradient(135deg, rgba(0,255,198,0.4), rgba(224,255,79,0.4), rgba(255,45,149,0.3)) 1;
    animation: core-pulse-border 4s ease-in-out infinite;
}

.core-card.in-view {
    animation: core-zoom 1200ms var(--ease-expo-out) forwards, core-pulse-border 4s ease-in-out 1200ms infinite;
}

@keyframes core-zoom {
    from { opacity: 0; transform: scale(0.7); }
    to   { opacity: 1; transform: scale(1); }
}

@keyframes core-pulse-border {
    0%, 100% {
        border-image: linear-gradient(135deg, rgba(224,255,79,0.5), rgba(0,255,198,0.3), rgba(255,45,149,0.25)) 1;
        box-shadow: 0 0 60px rgba(224, 255, 79, 0.15), inset 0 1px 0 rgba(255,255,255,0.08);
    }
    50% {
        border-image: linear-gradient(135deg, rgba(255,45,149,0.5), rgba(224,255,79,0.3), rgba(0,255,198,0.25)) 1;
        box-shadow: 0 0 60px rgba(255, 45, 149, 0.18), inset 0 1px 0 rgba(255,255,255,0.08);
    }
}

.core-header {
    flex-shrink: 0;
    padding-bottom: 18px;
    border-bottom: 1px solid rgba(0, 255, 198, 0.15);
    margin-bottom: 18px;
}

.core-title {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: clamp(28px, 4vw, 44px);
    color: var(--electric-chartreuse);
    letter-spacing: 0.06em;
    text-shadow: 0 0 24px rgba(224, 255, 79, 0.4);
    margin: 12px 0 8px;
    line-height: 1.1;
}

.core-subtitle {
    font-family: var(--font-display);
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--neon-mint);
}

.core-scroll {
    flex: 1;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-right: 16px;
    scrollbar-width: thin;
    scrollbar-color: var(--neon-mint) transparent;
}

.core-scroll::-webkit-scrollbar {
    width: 4px;
}

.core-scroll::-webkit-scrollbar-track {
    background: rgba(0, 255, 198, 0.05);
}

.core-scroll::-webkit-scrollbar-thumb {
    background: var(--neon-mint);
    border-radius: 2px;
}

.manifesto-h {
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 18px;
    color: var(--neon-magenta);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin: 26px 0 12px;
}

.manifesto-h:first-child { margin-top: 4px; }

.core-scroll p {
    font-size: 15px;
    line-height: 1.8;
    color: rgba(224, 236, 255, 0.88);
    margin-bottom: 8px;
}

.manifesto-sign {
    margin-top: 32px;
    font-family: var(--font-display);
    font-style: italic;
    color: var(--electric-chartreuse);
    text-align: right;
    letter-spacing: 0.04em;
}

.core-pulse {
    position: absolute;
    inset: 0;
    border-radius: 16px;
    pointer-events: none;
    background: radial-gradient(circle at 50% 50%, rgba(0, 255, 198, 0.06) 0%, transparent 70%);
    animation: core-inner-pulse 4s ease-in-out infinite;
}

@keyframes core-inner-pulse {
    0%, 100% { opacity: 0.5; }
    50%      { opacity: 1; }
}

/* =====================================================================
   SECTION 4: FOOTER REEF
   ===================================================================== */
.section-reef {
    position: relative;
    min-height: 60vh;
    background: var(--abyssal-ink);
    overflow: hidden;
    padding: 80px 0 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
}

.reef-svg {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.reef-node {
    transition: transform 400ms var(--ease-expo-out);
}

.coral-branch {
    transition: transform 500ms var(--ease-expo-out);
    transform-origin: bottom center;
    transform-box: fill-box;
}

.coral-branch.bloom {
    transform: scale(1.1);
}

.node-pulse-strong {
    animation: node-strong-pulse 2.6s ease-in-out infinite;
    filter: drop-shadow(0 0 10px var(--electric-chartreuse));
    transform-origin: center;
    transform-box: fill-box;
}

@keyframes node-strong-pulse {
    0%, 100% { opacity: 0.85; transform: scale(1); }
    50%      { opacity: 0.4; transform: scale(1.4); }
}

.reef-nav {
    position: relative;
    z-index: 4;
    width: 100%;
    max-width: 1400px;
    margin-bottom: 60px;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    padding: 0 8%;
}

.reef-link {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: clamp(20px, 2.4vw, 32px);
    color: var(--electric-chartreuse);
    text-decoration: none;
    letter-spacing: 0.08em;
    text-shadow: 0 0 20px rgba(224, 255, 79, 0.5);
    text-align: center;
    transition: color 300ms var(--ease-expo-out), text-shadow 300ms var(--ease-expo-out), transform 300ms var(--ease-expo-out);
    cursor: pointer;
    padding: 12px 0;
}

.reef-link-left   { text-align: left; padding-left: 6%; transform: translateY(-180px); }
.reef-link-center { transform: translateY(-260px); }
.reef-link-right  { text-align: right; padding-right: 6%; transform: translateY(-180px); }

.reef-link:hover {
    color: #FFFFFF;
    text-shadow:
        0 0 30px rgba(224, 255, 79, 1),
        0 0 60px rgba(0, 255, 198, 0.6);
}

.reef-link-left:hover   { transform: translateY(-184px) scale(1.05); }
.reef-link-center:hover { transform: translateY(-266px) scale(1.05); }
.reef-link-right:hover  { transform: translateY(-184px) scale(1.05); }

.footer-meta {
    position: relative;
    z-index: 4;
    display: flex;
    justify-content: space-between;
    width: 100%;
    max-width: 1400px;
    padding: 0 8%;
    font-family: var(--font-display);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--reef-shadow);
}

.footer-coords {
    color: var(--neon-mint);
}

/* =====================================================================
   GLOBAL ANIMATIONS
   ===================================================================== */
@keyframes zoom-focus-in {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Generic in-view trigger */
.zoom-focus {
    opacity: 0;
    transform: scale(0.92);
    transition: opacity 900ms var(--ease-expo-out), transform 900ms var(--ease-expo-out);
}

.zoom-focus.in-view {
    opacity: 1;
    transform: scale(1);
}

/* =====================================================================
   RESPONSIVE
   ===================================================================== */
@media (max-width: 960px) {
    .scroll-markers { right: 14px; gap: 16px; }
    .marker-tooltip { display: none; }

    .city-mark { top: 5vh; left: 6vw; }
    .hero-tagline-card {
        right: 6vw;
        left: 6vw;
        width: auto;
        top: auto;
        bottom: 18vh;
    }

    .district-row {
        grid-template-columns: 1fr;
        padding: 40px 6%;
    }

    .cascade-stack {
        max-width: 90%;
        gap: 50px;
    }

    .cascade-card[data-indent="0"],
    .cascade-card[data-indent="1"],
    .cascade-card[data-indent="2"],
    .cascade-card[data-indent="3"],
    .cascade-card[data-indent="4"] {
        margin-left: 5%;
    }

    .core-card {
        width: 88vw;
        height: 78vh;
        padding: 24px 22px;
    }

    .orbit-1, .orbit-2, .orbit-3, .orbit-4, .orbit-5, .orbit-6 {
        display: none;
    }

    .reef-link-left, .reef-link-center, .reef-link-right {
        transform: translateY(-100px);
    }

    .reef-link-left:hover, .reef-link-center:hover, .reef-link-right:hover {
        transform: translateY(-104px) scale(1.05);
    }

    .footer-meta {
        flex-direction: column;
        gap: 10px;
        text-align: center;
        align-items: center;
    }
}

@media (max-width: 560px) {
    .city-name { font-size: 44px; }
    .section-title { font-size: 32px; }
    .core-title { font-size: 26px; }
    .hero-coordinates { gap: 16px; font-size: 10px; }
}