/* ============================================
   concurrent.quest - Surreal Concurrent Biology
   ============================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
    --cloud-cream: #FDF6EC;
    --lavender-mist: #D4C5F9;
    --seafoam-dream: #B8E8D2;
    --peach-blush: #FCCEC0;
    --butter-lemon: #FFF3B0;
    --inkwell: #2D2A3E;
    --plum-dust: #6B6080;
    --charcoal-sketch: #4A4458;
    --coral-pop: #FF8A80;

    --font-display: 'Baloo 2', cursive;
    --font-body: 'Nunito', sans-serif;
    --font-accent: 'Caveat', cursive;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--cloud-cream);
    color: var(--inkwell);
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.75;
    letter-spacing: 0.01em;
    font-size: clamp(1rem, 1.8vw, 1.25rem);
    overflow-x: hidden;
    position: relative;
}

/* ---------- Background Pattern ---------- */
.bg-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* ---------- Floating Particles ---------- */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    will-change: transform;
}

@keyframes particleDrift {
    0% {
        transform: translate(0, 0);
    }
    25% {
        transform: translate(calc(var(--drift-x) * 0.6), calc(var(--drift-y) * 0.4));
    }
    50% {
        transform: translate(var(--drift-x), var(--drift-y));
    }
    75% {
        transform: translate(calc(var(--drift-x) * 0.4), calc(var(--drift-y) * 0.6));
    }
    100% {
        transform: translate(0, 0);
    }
}

/* ---------- Hero Section: The Spawn Point ---------- */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    overflow: hidden;
}

/* Genesis Blob */
.genesis-blob {
    position: relative;
    width: 40vw;
    height: 40vh;
    min-width: 300px;
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(0);
    animation: genesisGrow 1500ms cubic-bezier(0.34, 1.56, 0.64, 1) 400ms forwards;
    will-change: transform, clip-path;
}

.genesis-blob .blob-border {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.genesis-blob .blob-border path {
    stroke-dasharray: 1600;
    stroke-dashoffset: 1600;
    animation: drawBorder 2000ms ease-out 600ms forwards;
}

.genesis-blob .blob-inner {
    position: relative;
    z-index: 3;
    text-align: center;
    background: var(--lavender-mist);
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    clip-path: path('M250,20 C340,15 430,60 460,140 C490,220 470,310 400,360 C330,400 200,405 120,370 C50,335 15,260 20,170 C25,90 140,25 250,20Z');
    background-image: radial-gradient(ellipse at 30% 30%, rgba(255,255,255,0.3), transparent);
}

/* Scale clip-path to percentage-like via viewBox trick — use inline SVG clip */
.genesis-blob .blob-inner {
    clip-path: ellipse(48% 48% at 50% 50%);
    border-radius: 50%;
    background: var(--lavender-mist);
    background-image: radial-gradient(ellipse at 30% 30%, rgba(255,255,255,0.3), transparent);
}

.hero-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(3rem, 8vw, 7rem);
    color: var(--inkwell);
    opacity: 0;
    transform: translateY(10px);
    animation: fadeInUp 600ms ease-out 1900ms forwards;
    line-height: 1.1;
}

.hero-dot-quest {
    font-family: var(--font-accent);
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    color: var(--plum-dust);
    display: inline-block;
    transform: rotate(3deg);
    opacity: 0;
    animation: fadeInUp 600ms ease-out 2500ms forwards;
}

/* Mitosis: Split Blobs */
.split-blob {
    position: absolute;
    width: 30vw;
    height: 30vh;
    min-width: 220px;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    will-change: transform, opacity;
    z-index: 2;
}

.split-blob .blob-border {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.split-blob .blob-inner {
    position: relative;
    z-index: 3;
    text-align: center;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    clip-path: ellipse(46% 46% at 50% 50%);
    border-radius: 50%;
    background-image: radial-gradient(ellipse at 30% 30%, rgba(255,255,255,0.3), transparent);
}

.split-blob-left .blob-inner {
    background-color: var(--seafoam-dream);
}

.split-blob-right .blob-inner {
    background-color: var(--peach-blush);
}

.split-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2rem, 5vw, 4rem);
    color: var(--inkwell);
}

.split-quest {
    font-family: var(--font-accent);
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    color: var(--inkwell);
    transform: rotate(3deg);
    display: inline-block;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    opacity: 0;
    animation: fadeIn 800ms ease-out 3200ms forwards;
    z-index: 5;
}

.scroll-indicator svg {
    animation: pulseScroll 2s ease-in-out infinite;
}

.scroll-label {
    font-family: var(--font-accent);
    font-size: 0.9rem;
    color: var(--plum-dust);
    opacity: 0.6;
}

/* ---------- Thread Pool Section ---------- */
.thread-pool {
    position: relative;
    width: 100%;
    min-height: 100vh;
    padding: 8vh 5vw 12vh;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: auto;
    gap: 2rem;
    align-items: start;
}

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

.squiggle-line {
    stroke-dasharray: 8 4;
    animation: flowDash 3s linear infinite;
}

@keyframes flowDash {
    to {
        stroke-dashoffset: -24;
    }
}

/* Thread Blobs */
.thread-blob {
    position: relative;
    z-index: 1;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.thread-blob.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Blob grid placement */
#blob-mutex {
    grid-column: 1 / 4;
    grid-row: 1;
    animation-delay: 0ms;
}

#blob-semaphore {
    grid-column: 5 / 8;
    grid-row: 1;
    margin-top: 6vh;
}

#blob-channel {
    grid-column: 2 / 5;
    grid-row: 2;
    margin-top: -2vh;
}

#blob-deadlock {
    grid-column: 6 / 9;
    grid-row: 2;
    margin-top: 3vh;
}

#blob-forkjoin {
    grid-column: 3 / 7;
    grid-row: 3;
    margin-top: -1vh;
}

/* Blob Shapes */
.blob-shape {
    position: relative;
    padding: 2.5rem 2rem;
    overflow: hidden;
    background-image: radial-gradient(ellipse at 30% 30%, rgba(255,255,255,0.3), transparent);
    will-change: transform;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.blob-shape:hover {
    transform: scale(1.03);
}

.lavender-blob {
    background-color: var(--lavender-mist);
    clip-path: path('M30,15 C90,5 220,0 270,30 C320,60 310,100 300,145 C290,185 260,220 200,230 C140,240 50,230 20,195 C-10,160 0,110 5,75 C10,45 -10,22 30,15Z');
    mix-blend-mode: multiply;
}

.seafoam-blob {
    background-color: var(--seafoam-dream);
    clip-path: path('M35,20 C100,0 230,5 275,40 C315,70 305,115 295,155 C280,195 245,225 185,235 C125,245 45,235 15,200 C-15,165 5,120 10,80 C15,40 -15,30 35,20Z');
    mix-blend-mode: multiply;
}

.peach-blob {
    background-color: var(--peach-blush);
    clip-path: path('M40,18 C105,2 225,8 268,42 C308,72 298,118 285,158 C272,198 238,228 178,238 C118,248 40,238 12,202 C-16,168 2,122 8,82 C14,42 -8,28 40,18Z');
    mix-blend-mode: multiply;
}

.coral-blob {
    background-color: var(--peach-blush);
    clip-path: path('M38,22 C95,4 228,10 272,45 C312,75 300,120 288,160 C275,198 242,226 180,236 C120,246 42,236 14,200 C-14,164 4,118 10,78 C16,40 -10,32 38,22Z');
    mix-blend-mode: multiply;
}

.butter-blob {
    background-color: var(--butter-lemon);
    clip-path: path('M32,16 C98,2 225,6 272,38 C315,66 308,112 298,152 C285,192 252,224 190,234 C128,244 48,234 18,198 C-12,162 2,116 8,78 C14,42 -12,26 32,16Z');
    mix-blend-mode: multiply;
}

/* Deadlock special: red tint pulse */
.coral-blob::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(255,138,128,0.15), transparent 70%);
    animation: deadlockPulse 2s ease-in-out infinite;
    pointer-events: none;
}

@keyframes deadlockPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.8; }
}

/* Blob Content */
.blob-content {
    position: relative;
    z-index: 2;
}

.concept-name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    color: var(--inkwell);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.concept-desc {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: clamp(0.9rem, 1.4vw, 1.1rem);
    color: var(--inkwell);
    line-height: 1.7;
}

/* Blob Annotations */
.blob-annotation {
    position: absolute;
    font-family: var(--font-accent);
    font-size: clamp(0.85rem, 1.4vw, 1.1rem);
    color: var(--plum-dust);
    pointer-events: none;
    white-space: nowrap;
}

.deadlock-annotation {
    color: var(--coral-pop);
}

/* Blob Ripple Effect */
.blob-ripple {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.25), transparent);
    transform: translate(-50%, -50%);
    pointer-events: none;
    opacity: 0;
    z-index: 1;
}

.blob-ripple.active {
    animation: rippleExpand 800ms ease-out forwards;
}

@keyframes rippleExpand {
    0% {
        width: 0;
        height: 0;
        opacity: 0.4;
    }
    100% {
        width: 150%;
        height: 150%;
        opacity: 0;
    }
}

/* Float animation for blobs */
@keyframes float {
    0% {
        transform: translate(0, 0) rotate(0deg);
    }
    50% {
        transform: translate(8px, -6px) rotate(1deg);
    }
    100% {
        transform: translate(0, 0) rotate(0deg);
    }
}

.thread-blob.visible {
    animation: float var(--float-duration, 10s) ease-in-out infinite;
    animation-delay: var(--float-delay, 0s);
}

.thread-blob.visible {
    opacity: 1;
}

/* ---------- Merge Point (Footer) ---------- */
.merge-point {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    overflow: hidden;
}

.merge-blob {
    position: relative;
    opacity: 0;
    transform: scale(0.7);
    transition: opacity 1.2s ease-out, transform 1.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.merge-blob.visible {
    opacity: 1;
    transform: scale(1);
}

.merge-blob-shape {
    padding: 3rem 4rem;
}

.merge-blob-shape.lavender-blob {
    mix-blend-mode: normal;
}

.merge-content {
    text-align: center;
}

.merge-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2.5rem, 6vw, 5rem);
    color: var(--inkwell);
    white-space: nowrap;
}

.merge-annotation {
    display: block;
    text-align: center;
    margin-top: 0.5rem;
    position: relative;
    font-family: var(--font-accent);
    font-size: clamp(1rem, 2vw, 1.4rem);
    color: var(--plum-dust);
}

/* ---------- Keyframe Animations ---------- */
@keyframes genesisGrow {
    0% {
        transform: scale(0);
    }
    100% {
        transform: scale(1);
    }
}

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

@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

@keyframes pulseScroll {
    0%, 100% {
        transform: translateY(0);
        opacity: 0.6;
    }
    50% {
        transform: translateY(5px);
        opacity: 1;
    }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .thread-pool {
        display: flex;
        flex-direction: column;
        padding: 5vh 4vw;
        gap: 3rem;
    }

    #blob-mutex,
    #blob-semaphore,
    #blob-channel,
    #blob-deadlock,
    #blob-forkjoin {
        margin-top: 0;
    }

    .genesis-blob {
        width: 70vw;
        height: 40vh;
    }

    .split-blob {
        width: 45vw;
        height: 28vh;
    }

    .squiggle-connectors {
        display: none;
    }
}

@media (max-width: 600px) {
    .genesis-blob {
        width: 85vw;
        height: 38vh;
    }

    .blob-shape {
        padding: 1.8rem 1.2rem;
    }

    .merge-blob-shape {
        padding: 2rem 2rem;
    }

    .merge-title {
        white-space: normal;
    }
}