/* ============================================================
   MasqproT.com — Xenobotany Field Log
   Palette: ocean-deep, warmed by phosphor + amber
   Typography: Fraunces / Lora / JetBrains Mono
   ============================================================ */

:root {
    --abyssal-black: #04111c;
    --hadal-slate: #0a1f33;
    --bathyal-steel: #14304a;
    --pressure-cyan: #2a5d7a;
    --phosphor-bone: #e3dccb;
    --sediment-mist: #94a3a6;
    --lichen-glow: #7fa890;
    --amber-indicator: #c89055;

    --font-display: "Fraunces", Georgia, serif;
    --font-body: "Lora", Georgia, serif;
    --font-mono: "JetBrains Mono", "Courier New", monospace;
}

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

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

body {
    font-family: var(--font-body);
    background: var(--abyssal-black);
    color: var(--phosphor-bone);
    font-size: 16.5px;
    line-height: 1.72;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* Sediment grain noise overlay */
.grain-overlay {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    opacity: 0.5;
    mix-blend-mode: screen;
}

/* Botanical underlay (parallax) */
.botanical-underlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 200vh;
    z-index: 0;
    pointer-events: none;
    will-change: transform;
}

.botanical-underlay svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* Pressure-rule hairlines */
.pressure-rules {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2;
}

.rule-vertical {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--pressure-cyan);
    opacity: 0.24;
}

.rule-vertical.rule-left { left: clamp(60px, 7vw, 120px); }
.rule-vertical.rule-right { right: clamp(60px, 7vw, 120px); }

/* ============================================================
   Arrival sequence overlay
   ============================================================ */
.arrival-overlay {
    position: fixed;
    inset: 0;
    background: var(--abyssal-black);
    z-index: 1000;
    transition: opacity 1.2s ease, visibility 1.2s ease;
    overflow: hidden;
}

.arrival-overlay.dismissed {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.arrival-icon {
    position: absolute;
    top: 50%;
    left: 62%;
    width: clamp(160px, 22vw, 280px);
    height: clamp(160px, 22vw, 280px);
    transform: translate(-50%, -50%) rotate(-6deg) scale(0.95);
    opacity: 0;
    transition: opacity 1.4s ease 0.2s, transform 4.2s ease-out 0.2s;
}

.arrival-overlay.show-icon .arrival-icon {
    opacity: 1;
    transform: translate(-50%, -50%) rotate(6deg) scale(1);
}

.arrival-icon svg {
    width: 100%;
    height: 100%;
}

.arrival-masthead {
    position: absolute;
    top: 50%;
    left: clamp(80px, 9vw, 160px);
    transform: translateY(-50%);
    color: var(--phosphor-bone);
    max-width: 32vw;
}

.masthead-line {
    display: block;
    font-family: var(--font-display);
    font-style: italic;
    font-weight: 300;
    font-size: clamp(2.4rem, 4.8vw, 4.6rem);
    line-height: 1.05;
    letter-spacing: -0.005em;
    color: var(--phosphor-bone);
}

.masthead-sub {
    display: block;
    margin-top: 1.2rem;
    font-family: var(--font-mono);
    font-size: 12.5px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--sediment-mist);
}

.masthead-line, .masthead-sub {
    overflow: hidden;
}

.masthead-line .glyph,
.masthead-sub .glyph {
    display: inline-block;
    opacity: 0;
    transform: translateY(0.4em);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.masthead-line .glyph.is-shown,
.masthead-sub .glyph.is-shown {
    opacity: 1;
    transform: translateY(0);
}

.arrival-cue {
    position: absolute;
    bottom: 6vh;
    left: clamp(80px, 9vw, 160px);
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--amber-indicator);
    letter-spacing: 0.18em;
    text-transform: lowercase;
    opacity: 0;
    transition: opacity 0.8s ease 3.2s;
}

.arrival-overlay.show-cue .arrival-cue {
    opacity: 1;
    animation: cueBlink 2.4s ease-in-out 4s infinite;
}

@keyframes cueBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.45; }
}

/* ============================================================
   Instrument navigation
   ============================================================ */
.instrument-nav {
    position: fixed;
    bottom: clamp(20px, 3vh, 40px);
    left: clamp(24px, 3vw, 56px);
    z-index: 50;
    color: var(--phosphor-bone);
    pointer-events: auto;
    transition: opacity 0.6s ease;
    opacity: 0;
}

.instrument-nav.is-active {
    opacity: 1;
}

.nav-depth-current {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 0.6rem;
}

.nav-depth-label {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--sediment-mist);
}

.nav-depth-value {
    font-family: var(--font-mono);
    font-size: 22px;
    font-weight: 500;
    color: var(--amber-indicator);
    letter-spacing: 0.04em;
    line-height: 1;
}

.nav-section-list {
    list-style: none;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.5s ease, opacity 0.4s ease;
}

.instrument-nav:hover .nav-section-list,
.instrument-nav:focus-within .nav-section-list {
    max-height: 400px;
    opacity: 1;
}

.nav-section-list li {
    margin: 0.18rem 0;
}

.nav-section-list a {
    font-family: var(--font-body);
    font-size: 13px;
    color: var(--sediment-mist);
    text-decoration: none;
    letter-spacing: 0.02em;
    transition: color 0.3s ease, transform 0.3s ease;
    display: inline-block;
}

.nav-section-list a:hover,
.nav-section-list a.is-current {
    color: var(--lichen-glow);
    transform: translateX(4px);
}

/* Expand-all toggle */
.expand-all-toggle {
    position: fixed;
    top: clamp(24px, 3vh, 40px);
    right: clamp(28px, 4vw, 80px);
    background: transparent;
    border: 1px solid rgba(42, 93, 122, 0.4);
    color: var(--sediment-mist);
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: 0.16em;
    padding: 6px 12px;
    cursor: pointer;
    z-index: 40;
    transition: color 0.3s ease, border-color 0.3s ease, background 0.3s ease;
    text-transform: lowercase;
}

.expand-all-toggle:hover {
    color: var(--lichen-glow);
    border-color: var(--lichen-glow);
    background: rgba(127, 168, 144, 0.04);
}

/* ============================================================
   Field log layout — asymmetric bench grid
   ============================================================ */
.field-log {
    position: relative;
    z-index: 5;
    padding-top: 6vh;
}

.dive-section {
    position: relative;
    min-height: 100vh;
    display: grid;
    padding: clamp(80px, 10vh, 140px) clamp(40px, 6vw, 120px);
    column-gap: clamp(24px, 3vw, 64px);
}

/* Asymmetric ratios — oscillating field margin */
.sec-arrival { grid-template-columns: 5fr 7fr; }
.sec-mqt04 { grid-template-columns: 7fr 5fr; }
.sec-mqt07 { grid-template-columns: 4fr 8fr; }
.sec-interlude-1 { grid-template-columns: 8fr 4fr; }
.sec-mqt12 { grid-template-columns: 5fr 7fr; }
.sec-mqt15 { grid-template-columns: 4fr 8fr; }
.sec-interlude-2 { grid-template-columns: 4fr 8fr; }
.sec-mqt19 { grid-template-columns: 5fr 7fr; }
.sec-mqt22 { grid-template-columns: 3fr 9fr; }
.sec-coda { grid-template-columns: 9fr 3fr; }

/* Field margin */
.field-margin {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1.4rem;
    padding-top: 1rem;
}

.depth-marker {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--amber-indicator);
    letter-spacing: 0.1em;
    font-weight: 500;
}

.depth-tick {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--sediment-mist);
    opacity: 0.55;
    letter-spacing: 0.06em;
}

.margin-icon {
    width: 92px;
    height: 92px;
    margin: 1.2rem 0;
    transform: rotate(-3deg);
    transition: transform 0.6s ease;
}

.margin-icon-2 { transform: rotate(4deg); margin-left: 1.4rem; }
.margin-icon-3 { transform: rotate(-2deg); }
.margin-icon-4 { transform: rotate(5deg); margin-left: 0.6rem; }
.margin-icon-5 { transform: rotate(-4deg); }
.margin-icon-6 { transform: rotate(3deg); margin-left: 1rem; }
.margin-icon-7 { transform: rotate(-5deg); }

.margin-annotation {
    width: 200px;
    height: 60px;
    transform: rotate(-2deg);
    margin-top: 0.8rem;
}

.annot-arrival { transform: rotate(2deg); }
.annot-04 { transform: rotate(-3deg); }

.margin-annotation path {
    stroke-dasharray: 320;
    stroke-dashoffset: 320;
    transition: stroke-dashoffset 1.6s ease-out;
}

.margin-annotation.is-revealed path {
    stroke-dashoffset: 0;
}

.margin-annotation text {
    opacity: 0;
    transition: opacity 0.6s ease 1.2s;
}

.margin-annotation.is-revealed text {
    opacity: 0.75;
}

.kelp-frond {
    width: 80px;
    height: 320px;
    margin-top: 1rem;
    opacity: 0.85;
}

/* ============================================================
   Content pane
   ============================================================ */
.content-pane {
    position: relative;
    max-width: 960px;
    padding-right: clamp(0px, 2vw, 40px);
}

.entry-meta {
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--sediment-mist);
    margin-bottom: 1.6rem;
}

.entry-meta em {
    font-style: italic;
    color: var(--lichen-glow);
}

.designation-strip {
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--amber-indicator);
    margin-bottom: 1.4rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid rgba(42, 93, 122, 0.3);
    display: inline-block;
}

.display-title {
    font-family: var(--font-display);
    font-weight: 300;
    font-style: italic;
    font-size: clamp(2.4rem, 4.8vw, 4.6rem);
    line-height: 1.04;
    letter-spacing: -0.012em;
    margin-bottom: 1.8rem;
    color: var(--phosphor-bone);
}

.display-title em {
    font-style: italic;
    color: var(--phosphor-bone);
}

.display-title .caps {
    font-family: var(--font-body);
    font-style: normal;
    font-weight: 600;
    font-variant-caps: small-caps;
    font-size: 0.62em;
    letter-spacing: 0.08em;
    color: var(--lichen-glow);
    margin: 0 0.18em;
}

.display-title .mono {
    font-family: var(--font-mono);
    font-style: normal;
    font-weight: 400;
    font-size: 0.32em;
    color: var(--sediment-mist);
    letter-spacing: 0.12em;
    vertical-align: middle;
}

.lead {
    font-family: var(--font-body);
    font-size: 19px;
    line-height: 1.72;
    color: var(--phosphor-bone);
    margin-bottom: 1.4rem;
    max-width: 56ch;
    font-style: italic;
    font-weight: 400;
}

.body-prose {
    font-family: var(--font-body);
    font-size: 16.5px;
    line-height: 1.78;
    color: var(--phosphor-bone);
    margin-bottom: 1.2rem;
    max-width: 64ch;
}

.body-prose em {
    color: var(--lichen-glow);
    font-style: italic;
}

.reflective {
    font-family: var(--font-body);
    font-style: italic;
    font-size: 17.5px;
    line-height: 1.8;
    color: var(--sediment-mist);
    margin-top: 2.4rem;
    padding-left: 1.6rem;
    border-left: 2px solid rgba(42, 93, 122, 0.5);
    max-width: 56ch;
}

.terminal-cue,
.terminal-cta {
    margin-top: 2.4rem;
    font-family: var(--font-mono);
    font-size: 13.5px;
    color: var(--lichen-glow);
    letter-spacing: 0.04em;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.terminal-cue .prompt,
.terminal-cta .prompt {
    color: var(--amber-indicator);
    font-weight: 500;
}

.terminal-cta {
    margin-top: 3rem;
    font-size: 16px;
    padding: 1rem 1.2rem;
    background: rgba(20, 48, 74, 0.42);
    border: 1px solid rgba(42, 93, 122, 0.6);
    border-left: 3px solid var(--amber-indicator);
    display: inline-flex;
}

.cursor-blink {
    color: var(--amber-indicator);
    animation: cursorBlink 1.1s step-end infinite;
    margin-left: 0.2rem;
    font-weight: 600;
}

@keyframes cursorBlink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* ============================================================
   Specimen entries (progressive disclosure)
   ============================================================ */
.specimen {
    position: relative;
    margin: 2.4rem 0 3.6rem;
    padding-bottom: 1.2rem;
}

.specimen-head {
    margin-bottom: 1.2rem;
}

.specimen-designation {
    background: transparent;
    border: 1px solid rgba(42, 93, 122, 0.5);
    color: var(--phosphor-bone);
    font-family: var(--font-mono);
    font-size: 14px;
    letter-spacing: 0.18em;
    padding: 8px 14px;
    cursor: pointer;
    margin-bottom: 1rem;
    display: inline-flex;
    gap: 12px;
    align-items: center;
    transition: color 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.specimen-designation:hover {
    color: var(--amber-indicator);
    border-color: var(--amber-indicator);
    background: rgba(200, 144, 85, 0.06);
}

.design-code {
    font-weight: 600;
}

.design-status {
    color: var(--amber-indicator);
    font-weight: 500;
}

.specimen-title {
    font-family: var(--font-display);
    font-weight: 300;
    font-style: italic;
    font-size: clamp(1.8rem, 3.4vw, 3.2rem);
    line-height: 1.1;
    letter-spacing: -0.008em;
    margin: 0.6rem 0 0.8rem;
    color: var(--phosphor-bone);
}

.specimen-title em {
    font-style: italic;
    color: var(--phosphor-bone);
}

.specimen-title .caps {
    font-family: var(--font-body);
    font-style: normal;
    font-weight: 600;
    font-variant-caps: small-caps;
    font-size: 0.6em;
    letter-spacing: 0.08em;
    color: var(--lichen-glow);
    margin: 0 0.2em;
}

.specimen-title .mono {
    font-family: var(--font-mono);
    font-style: normal;
    font-weight: 400;
    font-size: 0.34em;
    color: var(--amber-indicator);
    letter-spacing: 0.12em;
    vertical-align: middle;
}

.specimen-line {
    font-family: var(--font-body);
    font-size: 16.5px;
    color: var(--phosphor-bone);
    line-height: 1.62;
    max-width: 62ch;
    margin-top: 0.4rem;
}

/* Specimen card layout */
.specimen-card {
    display: grid;
    grid-template-columns: minmax(220px, 280px) 1fr;
    gap: 2.4rem;
    align-items: start;
    margin-top: 1.8rem;
}

@media (max-width: 900px) {
    .specimen-card {
        grid-template-columns: 1fr;
    }
}

/* Iso card with proximity tilt */
.iso-card {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background: rgba(10, 31, 51, 0.6);
    border: 1px solid rgba(42, 93, 122, 0.5);
    transform: perspective(800px) rotateX(0deg) rotateY(0deg) rotate(var(--base-rotation, -3deg));
    transition: transform 0.42s cubic-bezier(0.2, 0.8, 0.4, 1);
    will-change: transform;
    padding: 1rem;
}

.iso-card:nth-of-type(odd) { --base-rotation: 3deg; }

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

.iso-tag {
    position: absolute;
    bottom: 8px;
    right: 12px;
    font-family: var(--font-mono);
    font-size: 9.5px;
    letter-spacing: 0.16em;
    color: var(--sediment-mist);
    text-transform: uppercase;
    opacity: 0.7;
}

/* Dossier — progressive disclosure */
.dossier {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.54s cubic-bezier(0.2, 0.7, 0.4, 1);
    overflow: hidden;
}

.dossier > * {
    min-height: 0;
}

.specimen.is-expanded .dossier {
    grid-template-rows: 1fr;
}

.dossier-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: rgba(42, 93, 122, 0.35);
    border: 1px solid rgba(42, 93, 122, 0.4);
}

@media (max-width: 700px) {
    .dossier-grid {
        grid-template-columns: 1fr;
    }
}

.panel {
    background: rgba(10, 31, 51, 0.7);
    padding: 1.2rem 1.4rem;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.specimen.is-expanded .panel { opacity: 1; transform: translateY(0); }
.specimen.is-expanded .panel-prov { transition-delay: 0.06s; }
.specimen.is-expanded .panel-morph { transition-delay: 0.14s; }
.specimen.is-expanded .panel-obs { transition-delay: 0.22s; }
.specimen.is-expanded .panel-haz { transition-delay: 0.30s; }

.panel-tag {
    display: block;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: lowercase;
    color: var(--amber-indicator);
    margin-bottom: 0.6rem;
}

.panel p {
    font-family: var(--font-body);
    font-size: 14.5px;
    line-height: 1.7;
    color: var(--phosphor-bone);
}

.panel p em {
    color: var(--lichen-glow);
    font-style: italic;
}

.dossier-foot {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    padding: 0.8rem 1rem;
    background: rgba(4, 17, 28, 0.7);
    border: 1px solid rgba(42, 93, 122, 0.3);
    border-top: 0;
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--sediment-mist);
    letter-spacing: 0.06em;
}

.mono { font-family: var(--font-mono); }
.mono.mini { text-transform: lowercase; }

/* Interlude / field note variant */
.interlude-pane {
    max-width: 720px;
}

.interlude-stamp {
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--lichen-glow);
    margin-bottom: 1.2rem;
}

.interlude-title {
    font-family: var(--font-display);
    font-weight: 300;
    font-style: italic;
    font-size: clamp(2rem, 3.6vw, 3.4rem);
    line-height: 1.06;
    margin-bottom: 1.6rem;
    color: var(--phosphor-bone);
}

.interlude-title em { font-style: italic; color: var(--phosphor-bone); }

.interlude-title .caps {
    font-family: var(--font-body);
    font-style: normal;
    font-weight: 600;
    font-variant-caps: small-caps;
    font-size: 0.6em;
    letter-spacing: 0.08em;
    color: var(--lichen-glow);
    margin-left: 0.2em;
}

.sign-off {
    margin-top: 2.6rem;
    color: var(--sediment-mist);
}

/* ============================================================
   Reveal animation — sections fade in on scroll
   ============================================================ */
.dive-section {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 1.1s ease, transform 1.1s ease;
}

.dive-section.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.sec-arrival {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================
   Reduce motion / responsive
   ============================================================ */
@media (max-width: 760px) {
    .dive-section {
        grid-template-columns: 1fr !important;
        padding: 80px 24px;
    }
    .field-margin {
        order: 2;
        flex-direction: row;
        flex-wrap: wrap;
        gap: 1rem;
        align-items: flex-start;
    }
    .content-pane { order: 1; padding-right: 0; max-width: 100%; }
    .rule-vertical { display: none; }
    .arrival-icon { left: 70%; }
    .arrival-masthead { left: 24px; max-width: 80vw; }
    .instrument-nav { bottom: 16px; left: 16px; }
    .nav-section-list { display: none; }
    .expand-all-toggle { right: 16px; top: 16px; padding: 4px 8px; }
}

/* Small flourish: section-bottom kelp gauge separation */
.dive-section + .dive-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(42,93,122,0.45) 18%, rgba(42,93,122,0.45) 82%, transparent 100%);
    opacity: 0.6;
}