/* ==========================================================================
   munju.wiki — translucent-frost / seapunk-meditative / pearl-archival
   Palette:
     #0E2630  Abyss Slate
     #1F4754  Lagoon Mid
     #3B5C6A  Cord Gray-Teal
     #7AAEB0  Sea-Glass Turquoise
     #C8DDD8  Pearl Skin
     #E8F4F1  Foam Highlight
     #F8FBF9  Foam White
     #F0C674  Submerged Brass
     #1A3A48  Deep Current
     #D8CCAE  Wet Sand
   ========================================================================== */

:root {
    --abyss: #0E2630;
    --lagoon: #1F4754;
    --cord: #3B5C6A;
    --seaglass: #7AAEB0;
    --pearl-skin: #C8DDD8;
    --foam: #E8F4F1;
    --foam-white: #F8FBF9;
    --brass: #F0C674;
    --deep-current: #1A3A48;
    --wet-sand: #D8CCAE;

    --slow-out: cubic-bezier(0.22, 1, 0.36, 1);
    --tide-angle: -7deg;

    --font-display: 'Limelight', 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
    --font-mono: 'Major Mono Display', 'Courier New', monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--pearl-skin);
    background:
        radial-gradient(ellipse at 50% 0%, var(--lagoon) 0%, var(--abyss) 70%, #061319 100%);
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.78;
    font-size: 17px;
    letter-spacing: 0.005em;
    position: relative;
}

/* Subtle deep-water grain overlay */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 20% 20%, rgba(122, 174, 176, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(31, 71, 84, 0.4) 0%, transparent 60%),
        linear-gradient(180deg, transparent 0%, rgba(14, 38, 48, 0.3) 100%);
    z-index: 1;
}

/* ============================================================
   Caustic light overlay — never absent, never loud
   ============================================================ */
.caustic-overlay {
    position: fixed;
    inset: -10vh -10vw;
    pointer-events: none;
    z-index: 2;
    opacity: 0.06;
    mix-blend-mode: screen;
    overflow: hidden;
}

.caustic-svg {
    width: 120%;
    height: 120%;
    animation: caustic-drift 64s linear infinite;
}

@keyframes caustic-drift {
    from { transform: translate3d(0, 0, 0); }
    to   { transform: translate3d(-120px, -40px, 0); }
}

/* ============================================================
   Pearl Strand Spine (left 22%)
   ============================================================ */
.pearl-strand {
    position: fixed;
    top: 0;
    left: 0;
    width: 22vw;
    height: 100vh;
    z-index: 6;
    pointer-events: none;
}

.strand-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: visible;
}

.silk-cord {
    stroke-dasharray: 2400;
    stroke-dashoffset: 2400;
    animation: cord-drop 1.8s var(--slow-out) 0.4s forwards,
               cord-sway 9s ease-in-out infinite alternate;
}

@keyframes cord-drop {
    to { stroke-dashoffset: 0; }
}

@keyframes cord-sway {
    from { transform: translateX(-2px); }
    to   { transform: translateX(3px); }
}

.pearl-list {
    position: relative;
    width: 100%;
    height: 100%;
    list-style: none;
    pointer-events: auto;
}

.pearl-node {
    position: absolute;
    left: 50%;
    width: 32px;
    height: 32px;
    transform: translate(-50%, -50%);
    cursor: pointer;
    transition: transform 0.6s var(--slow-out);
}

.pearl-node:hover {
    transform: translate(-50%, -50%) scale(1.18);
}

.pearl-svg {
    width: 100%;
    height: 100%;
    overflow: visible;
    transition: filter 0.6s var(--slow-out);
}

.pearl-node.active .pearl-svg {
    filter: drop-shadow(0 0 14px rgba(232, 244, 241, 0.4));
}

.pearl-node .pearl-circle {
    fill: url(#pearl-grad);
    stroke: var(--seaglass);
    stroke-width: 0.6;
    transition: all 1.2s var(--slow-out);
}

.pearl-node.rough .pearl-circle {
    fill: url(#pearl-rough);
    stroke: var(--cord);
    opacity: 0.78;
}

.pearl-label {
    position: absolute;
    left: calc(100% + 14px);
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.18em;
    color: var(--seaglass);
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.4s var(--slow-out);
}

.pearl-node.active .pearl-label,
.pearl-node:hover .pearl-label {
    opacity: 0.78;
}

.pearl-tag-num {
    color: var(--brass);
    margin-right: 6px;
}

/* ============================================================
   Drift Column (right 22%)
   ============================================================ */
.drift-column {
    position: fixed;
    top: 0;
    right: 0;
    width: 22vw;
    height: 100vh;
    z-index: 5;
    pointer-events: none;
    overflow: hidden;
}

.drift-stream {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.drift-item {
    position: absolute;
    left: 24px;
    right: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    opacity: 0;
    will-change: transform, opacity;
}

.drift-item .mini-pearl {
    flex-shrink: 0;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: radial-gradient(circle at 38% 32%, var(--foam-white) 0%, var(--pearl-skin) 50%, var(--seaglass) 100%);
    box-shadow: inset -1px -1px 2px rgba(31, 71, 84, 0.3);
    opacity: 0.78;
}

.drift-item .drift-label {
    font-family: var(--font-body);
    font-style: italic;
    font-weight: 300;
    font-size: 12.5px;
    color: var(--pearl-skin);
    opacity: 0.66;
    letter-spacing: 0.01em;
    line-height: 1.35;
}

.drift-fish-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.drift-fish {
    position: absolute;
    width: 22px;
    height: 14px;
    opacity: 0.6;
    will-change: transform;
}

.drift-fish path,
.drift-fish line,
.drift-fish circle,
.drift-fish polyline {
    fill: none;
    stroke: var(--cord);
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.drift-caustic {
    position: absolute;
    inset: 0;
    opacity: 0.08;
    mix-blend-mode: screen;
}

.drift-caustic svg {
    width: 100%;
    height: 100%;
}

/* ============================================================
   Lagoon Header (120vh)
   ============================================================ */
.lagoon-header {
    position: relative;
    width: 100%;
    height: 120vh;
    overflow: hidden;
    z-index: 3;
}

.wave-field {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.wave {
    position: absolute;
    left: -10%;
    width: 120%;
    height: 100%;
    bottom: 0;
}

.wave-1 {
    bottom: 0;
    height: 70%;
    opacity: 0.95;
    animation: wave-drift-a 22s linear infinite;
}

.wave-2 {
    bottom: 8%;
    height: 80%;
    opacity: 0.78;
    animation: wave-drift-b 32s linear infinite;
}

.wave-3 {
    bottom: 16%;
    height: 90%;
    opacity: 0.55;
    animation: wave-drift-c 44s linear infinite;
}

@keyframes wave-drift-a {
    from { transform: translateX(0); }
    to   { transform: translateX(-120px); }
}

@keyframes wave-drift-b {
    from { transform: translateX(-60px); }
    to   { transform: translateX(60px); }
}

@keyframes wave-drift-c {
    from { transform: translateX(0); }
    to   { transform: translateX(180px); }
}

.lagoon-shimmer {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 50% 30%, rgba(232, 244, 241, 0.08) 0%, transparent 50%),
        linear-gradient(180deg, rgba(14, 38, 48, 0.05) 0%, rgba(31, 71, 84, 0.4) 100%);
}

.lagoon-content {
    position: relative;
    z-index: 4;
    padding-top: 28vh;
    text-align: center;
    margin-left: 22vw;
    margin-right: 22vw;
}

.wordmark {
    font-family: var(--font-display);
    font-weight: 400;
    color: var(--foam);
    line-height: 1.1;
    text-align: center;
    text-shadow: 0 0 1px rgba(232, 244, 241, 0.4);
    animation: glass-shimmer 7s ease-in-out infinite;
}

@keyframes glass-shimmer {
    0%, 100% { transform: translateY(0); filter: blur(0); }
    50%      { transform: translateY(-1px); filter: blur(0.3px); }
}

.wordmark-roman {
    display: block;
    font-size: clamp(2.6rem, 6.4vw, 5.2rem);
    letter-spacing: 0.04em;
    color: var(--foam-white);
}

.wordmark-hanja {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(1.1rem, 1.6vw, 1.4rem);
    letter-spacing: 0.18em;
    color: var(--brass);
    margin-top: 0.6em;
}

.wordmark-tag {
    margin-top: 2.4rem;
    font-family: var(--font-body);
    font-style: italic;
    font-weight: 300;
    font-size: 1.05rem;
    color: var(--pearl-skin);
    opacity: 0.78;
    letter-spacing: 0.02em;
    text-align: center;
}

.scroll-pearl {
    position: absolute;
    left: 50%;
    bottom: 8vh;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    z-index: 5;
    animation: pearl-pulse 4s var(--slow-out) infinite;
}

@keyframes pearl-pulse {
    0%, 100% { transform: translate(-50%, 0); opacity: 0.95; }
    50%      { transform: translate(-50%, 6px); opacity: 0.5; }
}

.scroll-hint {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.32em;
    color: var(--seaglass);
    text-transform: uppercase;
}

/* ============================================================
   Diagonal Section (the tide-line)
   ============================================================ */
.diagonal-section {
    position: relative;
    z-index: 3;
    padding: 14vh 0 16vh;
    margin-top: -4vh;
    background:
        linear-gradient(180deg,
            rgba(31, 71, 84, 0.62) 0%,
            rgba(14, 38, 48, 0.72) 100%);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    clip-path: polygon(0% 4%, 100% 0%, 100% 96%, 0% 100%);
    overflow: hidden;
}

.diagonal-section::before {
    content: "";
    position: absolute;
    top: 4%;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, var(--foam) 18%, var(--foam) 82%, transparent 100%);
    opacity: 0.4;
    transform-origin: left center;
}

.diagonal-section::after {
    content: "";
    position: absolute;
    bottom: 4%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--deep-current) 18%, var(--deep-current) 82%, transparent 100%);
    opacity: 0.7;
}

.section-inner {
    position: relative;
    width: 56vw;
    margin: 0 auto;
    padding: 0 2vw;
    z-index: 2;
}

/* Marginalia (editor's note) */
.marginalia {
    padding-top: 18vh;
    padding-bottom: 18vh;
}

.editor-note {
    font-family: var(--font-body);
    font-style: italic;
    font-weight: 300;
    font-size: 1.32rem;
    line-height: 1.62;
    color: var(--foam);
    max-width: 540px;
    margin: 0 auto 1.6em;
    text-align: left;
    letter-spacing: 0.005em;
}

.editor-note .dropcap {
    font-family: var(--font-display);
    color: var(--brass);
    font-size: 2.6em;
    line-height: 0.9;
    float: left;
    margin: 0.05em 0.12em -0.05em 0;
    font-style: normal;
}

.editor-note-secondary {
    font-family: var(--font-body);
    font-style: italic;
    font-weight: 300;
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--pearl-skin);
    opacity: 0.7;
    max-width: 540px;
    margin: 0 auto;
    text-align: left;
}

/* ============================================================
   Article composition
   ============================================================ */
.article {
    min-height: 86vh;
}

.article-header {
    position: relative;
    margin-bottom: 3.4em;
}

.roman-numeral {
    display: block;
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 400;
    color: var(--foam);
    letter-spacing: 0.04em;
    line-height: 1;
    opacity: 0.92;
    margin-bottom: 0.4em;
}

.article-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 400;
    color: var(--foam-white);
    letter-spacing: 0.02em;
    line-height: 1.2;
    margin-bottom: 0.8em;
}

.article-subtitle {
    font-family: var(--font-body);
    font-style: italic;
    font-weight: 300;
    font-size: 1.1rem;
    color: var(--seaglass);
    letter-spacing: 0.012em;
    line-height: 1.4;
}

.article-body p {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 17px;
    line-height: 1.78;
    color: rgba(200, 221, 216, 0.88);
    letter-spacing: 0.005em;
    margin-bottom: 1.6em;
    max-width: 38em;
}

.article-body em {
    font-style: italic;
    color: var(--foam);
    opacity: 0.92;
}

.dropcap.brass {
    font-family: var(--font-display);
    color: var(--brass);
    font-size: 3.4em;
    line-height: 0.85;
    float: left;
    margin: 0.06em 0.12em -0.05em 0;
    font-weight: 400;
}

/* Hanja Watermark (珠) */
.hanja-watermark {
    position: absolute;
    right: -4vw;
    bottom: 3vh;
    width: 280px;
    height: 280px;
    transform: rotate(-7deg);
    opacity: 0.18;
    pointer-events: none;
    z-index: 1;
}

.hanja-watermark .stroke {
    stroke-dasharray: 360;
    stroke-dashoffset: 360;
}

.hanja-watermark.draw .stroke {
    animation: stroke-draw 0.8s var(--slow-out) forwards;
}

.hanja-watermark.draw .s1  { animation-delay: 0.0s;  }
.hanja-watermark.draw .s2  { animation-delay: 0.6s;  }
.hanja-watermark.draw .s3  { animation-delay: 1.2s;  }
.hanja-watermark.draw .s4  { animation-delay: 1.8s;  }
.hanja-watermark.draw .s5  { animation-delay: 2.4s;  }
.hanja-watermark.draw .s6  { animation-delay: 3.0s;  }
.hanja-watermark.draw .s7  { animation-delay: 3.6s;  }
.hanja-watermark.draw .s8  { animation-delay: 4.2s;  }
.hanja-watermark.draw .s9  { animation-delay: 4.8s;  }
.hanja-watermark.draw .s10 { animation-delay: 5.4s;  }
.hanja-watermark.draw .s11 { animation-delay: 6.0s;  }

@keyframes stroke-draw {
    to { stroke-dashoffset: 0; }
}

/* Coordinate stamp */
.coord-stamp {
    position: absolute;
    right: 2vw;
    bottom: 3vh;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.18em;
    color: var(--brass);
    opacity: 0.78;
    text-transform: uppercase;
    z-index: 3;
    display: flex;
    flex-wrap: wrap;
    gap: 0 8px;
    max-width: 320px;
    justify-content: flex-end;
}

.coord-stamp .dot {
    color: var(--cord);
    opacity: 0.7;
}

/* ============================================================
   Article entry transition (fade-in on scroll)
   ============================================================ */
.article {
    opacity: 0.18;
    transform: translateY(28px);
    transition:
        opacity 1.2s var(--slow-out),
        transform 1.2s var(--slow-out);
}

.article.in-view {
    opacity: 1;
    transform: translateY(0);
}

.marginalia {
    opacity: 0;
    transform: translateY(20px);
    transition:
        opacity 1.4s var(--slow-out),
        transform 1.4s var(--slow-out);
}

.marginalia.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================
   Tide Recession Footer
   ============================================================ */
.tide-recession {
    position: relative;
    z-index: 3;
    padding: 18vh 0 6vh;
    margin-top: -6vh;
    clip-path: polygon(0% 8%, 100% 0%, 100% 100%, 0% 100%);
    background: linear-gradient(180deg, rgba(31, 71, 84, 0.65) 0%, rgba(14, 38, 48, 0.85) 60%, var(--abyss) 100%);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.wet-sand {
    position: relative;
    width: 56vw;
    margin: 0 auto;
    padding: 4vh 0 0;
    text-align: center;
    border-top: 1px solid rgba(216, 204, 174, 0.3);
}

.wet-sand::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 18px;
    background: linear-gradient(180deg, rgba(216, 204, 174, 0.3) 0%, transparent 100%);
    pointer-events: none;
}

.footer-pearl {
    display: block;
    margin: 0 auto 1.6em;
    opacity: 0.92;
    cursor: pointer;
    transition: transform 0.4s var(--slow-out);
}

.footer-pearl:hover {
    transform: scale(1.12);
}

.colophon {
    font-family: var(--font-body);
    font-style: italic;
    font-weight: 300;
    font-size: 13px;
    color: var(--foam);
    opacity: 0.78;
    letter-spacing: 0.02em;
    margin-bottom: 0.8em;
}

.colophon-coord {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    letter-spacing: 0.32em;
    color: var(--brass);
    opacity: 0.6;
    text-transform: uppercase;
}

/* ============================================================
   Bubble Ripple Container
   ============================================================ */
.bubble-container {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 20;
}

.bubble {
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--seaglass);
    background: transparent;
    pointer-events: none;
    will-change: transform, opacity, width, height;
}

/* ============================================================
   Section transition ripple (cursor-anchored)
   ============================================================ */
.section-ripple {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    border: 1px solid var(--foam);
    pointer-events: none;
    transform: translate(-50%, -50%);
    animation: section-ripple-out 0.4s var(--slow-out) forwards;
    z-index: 4;
}

@keyframes section-ripple-out {
    0%   { width: 4px;   height: 4px;   opacity: 0.85; border-color: var(--foam); }
    100% { width: 220px; height: 220px; opacity: 0;    border-color: var(--seaglass); }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 920px) {
    .pearl-strand,
    .drift-column {
        display: none;
    }

    .lagoon-content {
        margin-left: 6vw;
        margin-right: 6vw;
    }

    .section-inner,
    .wet-sand {
        width: 86vw;
        padding: 0 2vw;
    }

    .hanja-watermark {
        width: 200px;
        height: 200px;
        right: -8vw;
        opacity: 0.12;
    }

    .coord-stamp {
        position: static;
        margin-top: 2.4em;
        justify-content: flex-start;
    }

    .roman-numeral {
        font-size: 3rem;
    }
}