/* lungi.dev - Light Dark-Academia + Watercolor + Circuit Traces */

:root {
    --color-cream: #FFFCF5;
    --color-charcoal: #3D3040;
    --color-plum: #4A2040;
    --color-rose: #D4A0A0;
    --color-lavender: #B8A9D4;
    --color-mint: #A8D4C0;
    --color-sage: #6B8F71;
    --color-peach: #F4D6C4;
    --color-twilight: #5B6B8A;

    --font-display: 'Caveat', cursive;
    --font-body: 'Nunito Sans', sans-serif;
    --font-mono: 'Inconsolata', monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(0.95rem, 2.2vw, 1.15rem);
    line-height: 1.72;
    color: var(--color-charcoal);
    background-color: var(--color-cream);
    overflow-x: hidden;
    position: relative;
}

/* ============================================
   Z-0: Watercolor Wash Background Layer
   ============================================ */

.wash-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse 60% 50% at 30% 20%, var(--color-lavender), transparent) ,
        radial-gradient(ellipse 50% 60% at 70% 40%, var(--color-rose), transparent),
        radial-gradient(ellipse 55% 45% at 40% 70%, var(--color-mint), transparent),
        radial-gradient(ellipse 40% 50% at 80% 80%, var(--color-peach), transparent);
    opacity: 0.08;
}

/* ============================================
   Circuit Trace Overlay (Z-2)
   ============================================ */

.circuit-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
    pointer-events: none;
}

/* ============================================
   Compass Rose Navigation
   ============================================ */

.compass-nav {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 100;
}

.compass-btn {
    width: 48px;
    height: 48px;
    background: rgba(255, 252, 245, 0.92);
    border: 1px solid var(--color-rose);
    border-radius: 50%;
    cursor: pointer;
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
                box-shadow 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 2px 12px rgba(90, 60, 80, 0.1);
}

.compass-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 4px 20px rgba(90, 60, 80, 0.15);
}

.compass-icon {
    width: 100%;
    height: 100%;
}

.compass-menu {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.compass-nav.open .compass-menu {
    pointer-events: auto;
    opacity: 1;
}

.compass-link {
    position: absolute;
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-plum);
    text-decoration: none;
    white-space: nowrap;
    transform: translate(-50%, -50%) rotate(0deg);
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1),
                opacity 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
                color 0.2s;
    opacity: 0;
}

.compass-link:hover {
    color: var(--color-sage);
}

.compass-nav.open .compass-link {
    opacity: 1;
}

.compass-nav.open .compass-link:nth-child(1) {
    transform: translate(-50%, -50%) translateY(-60px);
}

.compass-nav.open .compass-link:nth-child(2) {
    transform: translate(-50%, -50%) translateX(80px);
}

.compass-nav.open .compass-link:nth-child(3) {
    transform: translate(-50%, -50%) translateY(60px);
}

.compass-nav.open .compass-link:nth-child(4) {
    transform: translate(-50%, -50%) translateX(-90px);
}

/* ============================================
   Sections
   ============================================ */

.section {
    position: relative;
    z-index: 1;
    padding: 0 5vw;
}

.section-opening {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding-bottom: 80px;
}

.section-study,
.section-lab,
.section-canopy {
    padding-top: 120px;
    padding-bottom: 120px;
}

/* ============================================
   Watercolor Blooms (per section)
   ============================================ */

.watercolor-bloom {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    opacity: 0.07;
    transition: opacity 0.6s;
}

.bloom-opening {
    background:
        radial-gradient(ellipse 70% 60% at 35% 30%, var(--color-lavender), transparent),
        radial-gradient(ellipse 50% 40% at 65% 60%, var(--color-peach), transparent);
    animation: bloom-breathe 4s ease-in-out infinite;
}

.bloom-study {
    background:
        radial-gradient(ellipse 60% 50% at 30% 20%, var(--color-lavender), transparent),
        radial-gradient(ellipse 50% 60% at 70% 40%, var(--color-rose), transparent);
}

.bloom-lab {
    background:
        radial-gradient(ellipse 55% 50% at 40% 30%, var(--color-mint), transparent),
        radial-gradient(ellipse 45% 55% at 70% 60%, var(--color-lavender), transparent);
}

.bloom-canopy {
    background:
        radial-gradient(ellipse 65% 55% at 50% 30%, var(--color-mint), transparent),
        radial-gradient(ellipse 50% 45% at 30% 60%, var(--color-lavender), transparent),
        radial-gradient(ellipse 40% 50% at 70% 70%, var(--color-peach), transparent);
    opacity: 0.14;
}

@keyframes bloom-breathe {
    0%, 100% { opacity: 0.06; }
    50% { opacity: 0.12; }
}

/* ============================================
   Opening / Hero
   ============================================ */

.opening-content {
    position: relative;
    padding-left: 8vw;
}

.hero-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(3rem, 10vw, 6rem);
    color: var(--color-plum);
    letter-spacing: 0.02em;
    line-height: 1.1;
    margin-bottom: 16px;
}

.hero-tagline {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    color: var(--color-twilight);
    letter-spacing: 0.01em;
    margin-bottom: 40px;
}

.hero-traces {
    width: clamp(200px, 40vw, 400px);
    height: auto;
    display: block;
    margin-top: 20px;
}

.trace-path {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
}

.trace-path.animated {
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 1.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.trace-hero-1.animated { transition-delay: 0s; }
.trace-hero-2.animated { transition-delay: 0.4s; }
.trace-hero-3.animated { transition-delay: 0.8s; }

.trace-node {
    opacity: 0;
    transition: opacity 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.trace-node.visible {
    opacity: 1;
}

/* Pulsing circuit nodes */
.pulse-node {
    animation: none;
}

.pulse-node.active {
    animation: node-pulse 800ms cubic-bezier(0.34, 1.56, 0.64, 1) infinite;
}

@keyframes node-pulse {
    0%, 100% { transform-origin: center; r: 4; }
    50% { r: 5.2; }
}

/* ============================================
   Content Cards (Z-1)
   ============================================ */

.content-card {
    position: relative;
    background: rgba(255, 252, 245, 0.88);
    border: 1px solid var(--color-rose);
    border-radius: 12px;
    padding: 48px 40px;
    margin-bottom: 48px;
    box-shadow: 0 4px 24px rgba(90, 60, 80, 0.08);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
                box-shadow 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.content-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(90, 60, 80, 0.12);
}

.card-left {
    margin-left: 8vw;
    margin-right: 18vw;
}

.card-right {
    margin-left: 18vw;
    margin-right: 8vw;
}

.card-center {
    margin-left: 12vw;
    margin-right: 12vw;
}

.card-large {
    padding: 64px 56px;
}

/* Overlapping card effect */
.content-card + .content-card {
    margin-top: -16px;
}

/* Card reveal animation */
.reveal-card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.34, 1.56, 0.64, 1),
                transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

.reveal-card.revealed:hover {
    transform: translateY(-4px);
}

/* ============================================
   Card Content
   ============================================ */

.card-icon {
    margin-bottom: 20px;
}

.botanical-icon {
    width: 32px;
    height: 32px;
}

.card-heading {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2rem, 6vw, 3.8rem);
    color: var(--color-plum);
    letter-spacing: 0.02em;
    line-height: 1.15;
    margin-bottom: 16px;
}

.card-body {
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--color-charcoal);
    line-height: 1.72;
}

/* ============================================
   Code Blocks (Laboratory section)
   ============================================ */

.code-block {
    margin-top: 24px;
    padding: 24px 28px;
    background: rgba(255, 252, 245, 0.6);
    border-left: 3px solid var(--color-sage);
    border-radius: 0 8px 8px 0;
}

.code-block code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--color-sage);
    display: block;
    line-height: 1.9;
}

.code-keyword {
    color: var(--color-twilight);
}

.code-fn {
    color: var(--color-plum);
}

.code-highlight {
    background: linear-gradient(to bottom, transparent 60%, var(--color-peach) 60%);
    padding: 0 2px;
}

/* ============================================
   Margin Annotations (Z-2)
   ============================================ */

.margin-annotation {
    position: absolute;
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--color-lavender);
    opacity: 0.6;
    transform: rotate(var(--rotate, 0deg));
    pointer-events: none;
    white-space: nowrap;
}

.annotation-top-right {
    top: -12px;
    right: 24px;
}

.annotation-top-left {
    top: -12px;
    left: 24px;
}

.annotation-bottom-right {
    bottom: -12px;
    right: 32px;
}

.annotation-bottom-left {
    bottom: -12px;
    left: 32px;
}

/* ============================================
   Section Dividers
   ============================================ */

.section-divider {
    width: 100%;
    height: 24px;
    display: block;
    margin: 80px 0 0;
}

/* ============================================
   Canopy Section
   ============================================ */

.canopy-spacer {
    height: 120px;
}

.closing-line {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.4rem, 4vw, 2.2rem);
    color: var(--color-plum);
    text-align: center;
    padding: 40px 0;
    opacity: 0.8;
}

.signature-motif {
    display: block;
    width: 64px;
    height: 64px;
    margin: 60px auto 120px;
    opacity: 0.7;
}

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

@media (max-width: 768px) {
    .card-left,
    .card-right,
    .card-center {
        margin-left: 4vw;
        margin-right: 4vw;
    }

    .card-large {
        padding: 40px 28px;
    }

    .content-card {
        padding: 32px 24px;
    }

    .opening-content {
        padding-left: 4vw;
    }

    .compass-nav {
        top: 16px;
        right: 16px;
    }

    .compass-nav.open .compass-link:nth-child(1) {
        transform: translate(-50%, -50%) translateY(-50px);
    }

    .compass-nav.open .compass-link:nth-child(2) {
        transform: translate(-50%, -50%) translateX(65px);
    }

    .compass-nav.open .compass-link:nth-child(3) {
        transform: translate(-50%, -50%) translateY(50px);
    }

    .compass-nav.open .compass-link:nth-child(4) {
        transform: translate(-50%, -50%) translateX(-75px);
    }

    .section-study,
    .section-lab,
    .section-canopy {
        padding-top: 80px;
        padding-bottom: 80px;
    }

    .margin-annotation {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: clamp(2.4rem, 12vw, 4rem);
    }

    .card-heading {
        font-size: clamp(1.6rem, 8vw, 2.8rem);
    }
}