/* ============================================
   continuum.quest -- Styles
   Earth-tone cartographic HUD overlay
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --deep-loam: #2C1810;
    --walnut-brown: #5C4033;
    --terracotta: #C4704E;
    --sage-moss: #7A8B6F;
    --bleached-clay: #F0E6D4;
    --parchment: #FAF4E8;
    --raw-umber: #E8D5BC;
    --oxidized-copper: #5E8C6A;
    --charcoal: #2E2A26;

    --font-display: 'Urbanist', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --font-handwritten: 'Caveat', cursive;

    --elastic: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    color: var(--charcoal);
    background-color: var(--parchment);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* --- HUD Overlay Frame --- */
#hud-frame {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 100;
}

/* Corner Brackets */
.hud-bracket {
    position: absolute;
    width: 60px;
    height: 60px;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.hud-bracket.visible {
    opacity: 1;
}

.hud-bracket.fade-out {
    opacity: 0.2;
    transition: opacity 1.5s ease;
}

#bracket-tl {
    top: 16px;
    left: 16px;
}

#bracket-tr {
    top: 16px;
    right: 16px;
}

#bracket-bl {
    bottom: 16px;
    left: 16px;
}

#bracket-br {
    bottom: 16px;
    right: 16px;
}

/* Bracket pulse animation */
@keyframes bracketPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.hud-bracket.pulse {
    animation: bracketPulse 3s ease-in-out infinite;
}

/* HUD bracket path draw animation */
.hud-bracket path {
    stroke-dasharray: 120;
    stroke-dashoffset: 120;
    transition: stroke-dashoffset 1.2s var(--elastic);
}

.hud-bracket.visible path {
    stroke-dashoffset: 0;
}

/* Dark mode brackets */
.hud-bracket.dark-mode path {
    stroke: var(--terracotta);
    transition: stroke 0.8s ease;
}

/* Top Rail */
#hud-top-rail {
    position: absolute;
    top: 12px;
    left: 90px;
    right: 90px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    opacity: 0;
    transition: opacity 0.6s ease 0.4s;
}

#hud-top-rail.visible {
    opacity: 1;
}

.hud-label {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 10px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--walnut-brown);
    transition: color 0.8s ease;
}

.hud-label.dark-mode {
    color: var(--terracotta);
}

#compass-rose {
    width: 24px;
    height: 24px;
    animation: compassSpin 120s linear infinite;
    opacity: 0;
    transition: opacity 0.6s ease 0.6s;
}

#compass-rose.visible {
    opacity: 1;
}

@keyframes compassSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Depth Gauge */
#depth-gauge {
    position: absolute;
    left: 20px;
    top: 80px;
    bottom: 80px;
    width: 40px;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease 0.8s, transform 0.8s var(--elastic) 0.8s;
}

#depth-gauge.visible {
    opacity: 1;
    transform: translateY(0);
}

#depth-gauge-svg {
    width: 100%;
    height: 100%;
}

.depth-tick {
    pointer-events: all;
    cursor: pointer;
}

#depth-indicator {
    position: absolute;
    left: 6px;
    top: 0;
    width: 8px;
    height: 8px;
    background: var(--terracotta);
    border-radius: 50%;
    transition: top 0.6s var(--elastic);
    opacity: 0.8;
}

/* Depth gauge dark mode */
#depth-gauge.dark-mode #depth-gauge-svg line,
#depth-gauge.dark-mode #depth-gauge-svg text {
    transition: stroke 0.8s ease, fill 0.8s ease;
}

#depth-gauge.dark-mode #depth-gauge-svg line {
    stroke: var(--sage-moss);
}

#depth-gauge.dark-mode #depth-gauge-svg text {
    fill: var(--sage-moss);
}

/* Bottom Rail */
#hud-bottom-rail {
    position: absolute;
    bottom: 12px;
    left: 90px;
    right: 90px;
    display: flex;
    justify-content: flex-start;
    opacity: 0;
    transition: opacity 0.6s ease 1s;
}

#hud-bottom-rail.visible {
    opacity: 1;
}

.hud-coord {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 10px;
    letter-spacing: 0.15em;
    color: var(--walnut-brown);
    transition: color 0.8s ease;
}

.hud-coord.dark-mode {
    color: var(--terracotta);
}

/* --- Survey Plates (Common) --- */
.survey-plate {
    position: relative;
    min-height: 100vh;
    width: 100%;
    overflow: hidden;
}

.plate-border {
    position: absolute;
    top: 3vw;
    left: 3vw;
    right: 3vw;
    bottom: 3vw;
    border: 1px dashed var(--walnut-brown);
    opacity: 0.2;
    pointer-events: none;
    /* Irregular dash pattern via SVG-like approach */
    border-image: repeating-linear-gradient(
        90deg,
        var(--walnut-brown) 0px,
        var(--walnut-brown) 8px,
        transparent 8px,
        transparent 11px,
        var(--walnut-brown) 11px,
        var(--walnut-brown) 23px,
        transparent 23px,
        transparent 27px,
        var(--walnut-brown) 27px,
        var(--walnut-brown) 33px,
        transparent 33px,
        transparent 38px
    ) 1;
}

.plate-border-dark {
    border-color: var(--parchment);
    opacity: 0.1;
}

.plate-content {
    position: relative;
    max-width: 70vw;
    margin: 0 auto;
    padding: 8vh 2vw;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    z-index: 2;
}

/* --- Typography --- */
.section-heading {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2.8rem, 6.5vw, 5.5rem);
    letter-spacing: 0.06em;
    line-height: 1.12;
    color: var(--deep-loam);
    margin-bottom: 2rem;
}

.section-heading-light {
    color: var(--parchment);
}

.body-text {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    line-height: 1.72;
    letter-spacing: 0.01em;
    color: var(--charcoal);
    margin-bottom: 1.5rem;
    max-width: 55ch;
}

.body-text-light {
    color: var(--parchment);
}

.margin-note {
    font-family: var(--font-handwritten);
    font-weight: 400;
    font-size: clamp(0.85rem, 1.5vw, 1.1rem);
    color: var(--walnut-brown);
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    border-left: 2px solid var(--terracotta);
    opacity: 0.85;
    max-width: 45ch;
}

.margin-note-dark {
    color: var(--raw-umber);
    border-left-color: var(--sage-moss);
}

/* --- Reveal Animation --- */
.reveal-element {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s var(--elastic), transform 0.6s var(--elastic);
}

.reveal-element.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   PLATE 1: ORIGIN POINT
   ============================================ */
#plate-origin {
    background-color: var(--parchment);
}

.plate-origin-content {
    align-items: center;
    text-align: center;
    position: relative;
}

.origin-word {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: clamp(4rem, 10vw, 8rem);
    letter-spacing: 0.12em;
    color: var(--deep-loam);
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 1.2s ease 1.5s, transform 1.2s var(--elastic) 1.5s;
}

.origin-word.visible {
    opacity: 1;
    transform: scale(1);
}

.origin-annotation {
    font-family: var(--font-handwritten);
    font-size: 1.1rem;
    color: var(--walnut-brown);
    opacity: 0;
    transition: opacity 1s ease 2s;
    margin-top: 0.5rem;
}

.origin-annotation.visible {
    opacity: 1;
}

/* Dandelion container */
#dandelion-container {
    position: absolute;
    bottom: 5vh;
    right: 5vw;
    width: 200px;
    height: 320px;
}

#dandelion {
    width: 100%;
    height: 100%;
}

/* Dandelion seeds floating */
.dandelion-seed {
    position: absolute;
    width: 30px;
    height: 30px;
    opacity: 0;
}

.dandelion-seed.floating {
    opacity: 0.7;
}

#seed-1 {
    bottom: 170px;
    right: 80px;
    animation: seedFloat1 8s ease-in-out infinite;
    animation-delay: 0s;
}

#seed-2 {
    bottom: 180px;
    right: 100px;
    animation: seedFloat2 10s ease-in-out infinite;
    animation-delay: 1.5s;
}

#seed-3 {
    bottom: 175px;
    right: 60px;
    animation: seedFloat3 9s ease-in-out infinite;
    animation-delay: 3s;
}

#seed-4 {
    bottom: 185px;
    right: 90px;
    animation: seedFloat4 11s ease-in-out infinite;
    animation-delay: 2s;
}

#seed-5 {
    bottom: 170px;
    right: 70px;
    animation: seedFloat5 7s ease-in-out infinite;
    animation-delay: 4s;
}

@keyframes seedFloat1 {
    0% { transform: translate(0, 0) rotate(0deg); opacity: 0.7; }
    25% { transform: translate(15px, -60px) rotate(15deg); }
    50% { transform: translate(-10px, -130px) rotate(-10deg); }
    75% { transform: translate(20px, -200px) rotate(20deg); opacity: 0.4; }
    100% { transform: translate(-5px, -280px) rotate(-5deg); opacity: 0; }
}

@keyframes seedFloat2 {
    0% { transform: translate(0, 0) rotate(0deg); opacity: 0.6; }
    25% { transform: translate(-20px, -70px) rotate(-20deg); }
    50% { transform: translate(15px, -150px) rotate(10deg); }
    75% { transform: translate(-25px, -230px) rotate(-15deg); opacity: 0.3; }
    100% { transform: translate(10px, -310px) rotate(5deg); opacity: 0; }
}

@keyframes seedFloat3 {
    0% { transform: translate(0, 0) rotate(0deg); opacity: 0.65; }
    25% { transform: translate(25px, -55px) rotate(25deg); }
    50% { transform: translate(-15px, -120px) rotate(-15deg); }
    75% { transform: translate(30px, -190px) rotate(30deg); opacity: 0.35; }
    100% { transform: translate(-20px, -270px) rotate(-10deg); opacity: 0; }
}

@keyframes seedFloat4 {
    0% { transform: translate(0, 0) rotate(0deg); opacity: 0.55; }
    25% { transform: translate(-30px, -80px) rotate(-25deg); }
    50% { transform: translate(20px, -160px) rotate(15deg); }
    75% { transform: translate(-15px, -250px) rotate(-20deg); opacity: 0.25; }
    100% { transform: translate(25px, -340px) rotate(10deg); opacity: 0; }
}

@keyframes seedFloat5 {
    0% { transform: translate(0, 0) rotate(0deg); opacity: 0.7; }
    25% { transform: translate(18px, -50px) rotate(18deg); }
    50% { transform: translate(-12px, -110px) rotate(-12deg); }
    75% { transform: translate(22px, -180px) rotate(22deg); opacity: 0.4; }
    100% { transform: translate(-8px, -260px) rotate(-8deg); opacity: 0; }
}

/* ============================================
   PLATE 2: STRATA
   ============================================ */
#plate-strata {
    background-color: var(--raw-umber);
    min-height: 120vh;
}

.plate-strata-content {
    flex-direction: row;
    align-items: flex-start;
    gap: 4vw;
    max-width: 80vw;
}

.strata-illustration {
    flex: 0 0 40%;
    position: relative;
}

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

/* Layer glow on scroll */
.strata-layer.highlight {
    filter: drop-shadow(0 0 30px rgba(196, 112, 78, 0.15));
    transition: filter 0.6s var(--elastic);
}

/* Strata label slide-in */
.strata-label {
    opacity: 0;
    transition: opacity 0.6s var(--elastic), transform 0.6s var(--elastic);
    transform: translateX(-20px);
}

.strata-label.visible {
    opacity: 1;
    transform: translateX(0);
}

.strata-text {
    flex: 1;
    padding-top: 10vh;
}

/* Contour background */
.contour-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.contour-bg-strata {
    background:
        repeating-conic-gradient(from 0deg at 30% 40%, transparent 0deg, transparent 358deg, rgba(92, 64, 51, 0.04) 358deg, rgba(92, 64, 51, 0.04) 360deg),
        repeating-conic-gradient(from 45deg at 60% 55%, transparent 0deg, transparent 357deg, rgba(92, 64, 51, 0.04) 357deg, rgba(92, 64, 51, 0.04) 360deg),
        repeating-conic-gradient(from 90deg at 75% 30%, transparent 0deg, transparent 359deg, rgba(92, 64, 51, 0.04) 359deg, rgba(92, 64, 51, 0.04) 360deg);
    opacity: 0.12;
}

/* ============================================
   PLATE 3: GROWTH
   ============================================ */
#plate-growth {
    background-color: var(--bleached-clay);
}

.plate-growth-content {
    flex-direction: row;
    align-items: flex-start;
    gap: 4vw;
    max-width: 80vw;
}

.growth-illustration {
    flex: 0 0 40%;
    position: relative;
}

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

/* Tree SVG path-draw animation */
.tree-draw {
    stroke-dasharray: 500;
    stroke-dashoffset: 500;
    transition: stroke-dashoffset 1.5s var(--elastic);
}

.tree-draw.drawn {
    stroke-dashoffset: 0;
}

.branch-path {
    stroke-dasharray: 350;
    stroke-dashoffset: 350;
}

.branch-1.drawn { transition-delay: 1.5s; stroke-dashoffset: 0; }
.branch-2.drawn { transition-delay: 1.8s; stroke-dashoffset: 0; }
.branch-3.drawn { transition-delay: 2.1s; stroke-dashoffset: 0; }
.branch-4.drawn { transition-delay: 2.4s; stroke-dashoffset: 0; }
.branch-5.drawn { transition-delay: 2.7s; stroke-dashoffset: 0; }
.branch-6.drawn { transition-delay: 3.0s; stroke-dashoffset: 0; }

/* Leaf cluster fade in */
.leaf-cluster {
    opacity: 0;
    transition: opacity 0.8s ease;
}

.leaf-cluster.visible {
    opacity: 1;
}

.leaf-cluster-1.visible { transition-delay: 3.2s; }
.leaf-cluster-2.visible { transition-delay: 3.4s; }
.leaf-cluster-3.visible { transition-delay: 3.6s; }
.leaf-cluster-4.visible { transition-delay: 3.8s; }
.leaf-cluster-5.visible { transition-delay: 4.0s; }
.leaf-cluster-6.visible { transition-delay: 4.2s; }
.leaf-cluster-7.visible { transition-delay: 4.4s; }

.growth-text {
    flex: 1;
    padding-top: 10vh;
}

/* Tree annotations */
.tree-annotation {
    font-family: var(--font-handwritten);
    font-size: clamp(0.85rem, 1.3vw, 1rem);
    color: var(--walnut-brown);
    position: absolute;
    white-space: nowrap;
}

.annotation-heartwood {
    top: 55%;
    left: -5%;
    transform: rotate(-5deg);
}

.annotation-bark {
    top: 65%;
    left: 55%;
    transform: rotate(3deg);
}

.annotation-canopy {
    top: 15%;
    left: 50%;
    transform: rotate(-2deg);
}

/* ============================================
   PLATE 4: INFRASTRUCTURE (Dark)
   ============================================ */
#plate-infrastructure {
    background-color: var(--deep-loam);
    min-height: 110vh;
}

.plate-infra-content {
    justify-content: center;
    align-items: flex-start;
    padding-left: 10vw;
}

/* Background architectural fragments */
.infra-bg-fragments {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.infra-fragment {
    position: absolute;
    pointer-events: all;
    cursor: pointer;
    transition: opacity 0.4s var(--elastic);
}

.infra-fragment:hover {
    opacity: 1;
}

.infra-fragment:hover .infra-annotation {
    opacity: 0.8;
    transform: scale(1);
}

.infra-annotation {
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.3s var(--elastic), transform 0.3s var(--elastic);
    transform-origin: center;
}

.fragment-1 {
    width: 200px;
    top: 15%;
    right: 10%;
    transform: rotate(2deg);
}

.fragment-2 {
    width: 180px;
    top: 40%;
    right: 25%;
    transform: rotate(-3deg);
}

.fragment-3 {
    width: 160px;
    bottom: 25%;
    right: 8%;
    transform: rotate(4deg);
}

.fragment-4 {
    width: 200px;
    top: 20%;
    left: 5%;
    transform: rotate(-2deg);
}

.fragment-5 {
    width: 150px;
    bottom: 15%;
    left: 15%;
    transform: rotate(3deg);
}

/* ============================================
   PLATE 5: MEMORY
   ============================================ */
#plate-memory {
    background-color: var(--parchment);
}

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

.memory-map-svg {
    width: 100%;
    height: 100%;
}

.plate-memory-content {
    justify-content: center;
    align-items: flex-start;
    gap: 3rem;
    padding-top: 12vh;
}

/* Memory passages */
.memory-passage {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 3rem;
    max-width: 50ch;
}

.memory-passage .passage-circle {
    position: absolute;
    left: -25px;
    top: -10px;
    width: 50px;
    height: 50px;
    opacity: 0.4;
}

.passage-coord {
    display: block;
    font-family: var(--font-handwritten);
    font-size: clamp(0.85rem, 1.3vw, 1rem);
    color: var(--walnut-brown);
    margin-top: 0.75rem;
    opacity: 0.7;
}

/* Stagger passage positions for asymmetry */
.passage-1 {
    margin-left: 5vw;
}

.passage-2 {
    margin-left: 15vw;
}

.passage-3 {
    margin-left: 2vw;
}

.passage-4 {
    margin-left: 10vw;
}

/* ============================================
   PLATE 6: HORIZON
   ============================================ */
#plate-horizon {
    background: linear-gradient(to bottom, var(--bleached-clay), var(--raw-umber));
}

.plate-horizon-content {
    align-items: center;
    text-align: center;
    justify-content: space-between;
    padding-top: 15vh;
    padding-bottom: 0;
}

.horizon-statement {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2.4rem, 5vw, 4.5rem);
    letter-spacing: 0.06em;
    line-height: 1.12;
    color: var(--deep-loam);
}

/* Descending compass rose */
#horizon-compass {
    width: 80px;
    height: 80px;
    margin: 4rem auto;
    opacity: 0;
    transform: translateY(-60px);
    transition: opacity 1.5s ease, transform 3s var(--elastic);
}

#horizon-compass.descended {
    opacity: 1;
    transform: translateY(0);
}

/* Skyline */
.skyline-container {
    width: 100%;
    margin-top: auto;
    padding: 0 2vw;
}

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

.skyline-path {
    stroke-dasharray: 3000;
    stroke-dashoffset: 3000;
    transition: stroke-dashoffset 2s ease;
}

.skyline-path.drawn {
    stroke-dashoffset: 0;
}

/* ============================================
   Brick Bond Pattern (subtle background)
   ============================================ */
.brick-pattern {
    background-image:
        repeating-linear-gradient(
            90deg,
            rgba(92, 64, 51, 0.03) 0px,
            rgba(92, 64, 51, 0.03) 40px,
            transparent 40px,
            transparent 42px
        ),
        repeating-linear-gradient(
            0deg,
            rgba(92, 64, 51, 0.03) 0px,
            rgba(92, 64, 51, 0.03) 20px,
            transparent 20px,
            transparent 22px
        );
}

/* ============================================
   Responsive adjustments
   ============================================ */
@media (max-width: 900px) {
    .plate-content {
        max-width: 90vw;
        padding: 6vh 3vw;
    }

    .plate-strata-content,
    .plate-growth-content {
        flex-direction: column;
    }

    .strata-illustration,
    .growth-illustration {
        flex: none;
        width: 100%;
        max-width: 400px;
        margin: 0 auto 2rem;
    }

    .strata-text,
    .growth-text {
        padding-top: 2vh;
    }

    .plate-infra-content {
        padding-left: 3vw;
    }

    #dandelion-container {
        right: 2vw;
        bottom: 2vh;
        width: 140px;
        height: 220px;
    }

    .tree-annotation {
        position: relative;
        top: auto;
        left: auto;
        transform: none;
        display: block;
        margin-bottom: 0.5rem;
    }

    .memory-passage {
        margin-left: 2vw !important;
    }

    .infra-fragment {
        display: none;
    }

    .hud-bracket {
        width: 40px;
        height: 40px;
    }

    #depth-gauge {
        display: none;
    }
}

@media (max-width: 600px) {
    .origin-word {
        letter-spacing: 0.06em;
    }

    .section-heading {
        font-size: clamp(2rem, 8vw, 3.5rem);
    }

    .horizon-statement {
        font-size: clamp(1.8rem, 7vw, 3rem);
    }

    #hud-top-rail,
    #hud-bottom-rail {
        left: 50px;
        right: 50px;
    }
}

/* ============================================
   Scrollbar styling
   ============================================ */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--parchment);
}

::-webkit-scrollbar-thumb {
    background: var(--walnut-brown);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--terracotta);
}