/* CSS Variables - Exact Palette */
:root {
    --midnight-grape: #0d0221;
    --velvet-plum: #2b1055;
    --electric-orchid: #e040fb;
    --fizzy-lemon: #fff44f;
    --bubble-gum-pink: #ff6fff;
    --sour-apple-green: #39ff14;
    --sparkling-cyan: #00f5ff;
    --frosted-lilac: #e8d5f5;
    --cotton-candy-white: #fef3ff;
    --deep-violet: #2b1055;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Source Serif 4', serif;
    background: linear-gradient(135deg, var(--midnight-grape) 0%, var(--velvet-plum) 100%);
    color: var(--cotton-candy-white);
    line-height: 1.75;
    letter-spacing: 0.01em;
    overflow-x: hidden;
}

main {
    width: 100%;
}

/* Zone Base Styles */
.zone {
    position: relative;
    min-height: 90vh;
    display: grid;
    grid-template-columns: 1fr 2fr 1fr 1.5fr;
    grid-template-rows: auto;
    align-items: center;
    justify-items: center;
    gap: 2.5rem;
    overflow: hidden;
    padding: 4rem 2rem;
}

.bubble-field {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

/* Zone 1: Hero */
.hero-zone {
    min-height: 100vh;
    justify-content: center;
    align-items: center;
    background: radial-gradient(ellipse at 30% 20%, rgba(224, 64, 251, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(0, 245, 255, 0.15) 0%, transparent 50%),
                linear-gradient(135deg, var(--midnight-grape) 0%, var(--velvet-plum) 100%);
    z-index: 10;
}

.hero-title-container {
    position: relative;
    z-index: 2;
    text-align: center;
    animation: fadeIn 1s ease-out forwards;
    grid-column: 1 / -1;
}

.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(3rem, 8vw, 7rem);
    font-weight: 900;
    letter-spacing: -0.02em;
    line-height: 1;
    transform: rotate(3deg);
    perspective: 1200px;
    text-shadow: 0 0 40px currentColor;
    margin-bottom: 1rem;
}

.hero-title .char {
    display: inline-block;
    animation: colorCycle 6s ease-in-out infinite;
    animation-delay: calc(var(--char-index) * 0.15s);
    will-change: color;
}

.char:nth-child(1) { color: var(--electric-orchid); }
.char:nth-child(2) { color: var(--bubble-gum-pink); }
.char:nth-child(3) { color: var(--sparkling-cyan); }
.char:nth-child(4) { color: var(--fizzy-lemon); }
.char:nth-child(5) { color: var(--sour-apple-green); }
.char:nth-child(6) { color: var(--electric-orchid); }
.char:nth-child(7) { color: var(--bubble-gum-pink); }
.char:nth-child(8) { color: var(--sparkling-cyan); }
.char:nth-child(9) { color: var(--fizzy-lemon); }

@keyframes colorCycle {
    0%, 100% { opacity: 1; text-shadow: 0 0 40px currentColor; }
    50% { opacity: 0.9; text-shadow: 0 0 60px currentColor; }
}

.hero-subtitle {
    font-family: 'Source Serif 4', serif;
    font-size: 2rem;
    color: var(--cotton-candy-white);
    animation: fadeInDelay 1s ease-out 1.5s forwards;
    opacity: 0;
    text-shadow: 0 0 20px var(--electric-orchid);
    grid-column: 1 / -1;
    justify-self: center;
    margin-top: -34vh;
    z-index: 2;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDelay {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.wave-divider {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 120px;
    z-index: 2;
}

.wave-path {
    will-change: transform;
}

.wave-3 {
    top: 18%;
    bottom: auto;
    height: 180px;
    opacity: 0.9;
    transform: rotate(-2deg);
}

/* Zone 2: Cascade */
.cascade-zone {
    position: relative;
    background: radial-gradient(ellipse at 50% 50%, rgba(224, 64, 251, 0.08) 0%, transparent 70%),
                linear-gradient(135deg, var(--midnight-grape) 0%, var(--velvet-plum) 100%);
    display: block;
    padding: 8rem 2rem;
}

.cascade-container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 2fr 1fr 1.5fr;
    grid-template-rows: repeat(3, auto);
    gap: 2.5rem;
    max-width: 1120px;
    margin: 0 auto;
    min-height: 78vh;
    align-content: center;
}

.cascade-card {
    background: rgba(232, 213, 245, 0.08);
    backdrop-filter: blur(12px) saturate(1.5);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    padding: 2.5rem;
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    color: var(--cotton-candy-white);
    box-shadow: 0 8px 32px rgba(224, 64, 251, 0.15), 0 2px 8px rgba(0, 0, 0, 0.3);
    transform: perspective(1200px) rotateX(2deg) rotateY(-3deg);
    transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
    opacity: 0;
    will-change: transform, opacity;
}

.card-1 {
    grid-column: 1 / span 2;
    grid-row: 1;
    transform: rotate(-3deg) perspective(1200px) rotateX(2deg) rotateY(-3deg);
}

.card-2 {
    grid-column: 2 / span 2;
    grid-row: 2;
    margin-top: -1.5rem;
    margin-left: 3rem;
    transform: rotate(2deg) perspective(1200px) rotateX(2deg) rotateY(-3deg);
}

.card-3 {
    grid-column: 3 / span 2;
    grid-row: 3;
    margin-top: -1rem;
    transform: rotate(-1deg) perspective(1200px) rotateX(2deg) rotateY(-3deg);
}

.cascade-card:hover {
    transform: perspective(1200px) rotateX(-2deg) rotateY(3deg);
}

.cascade-card p {
    margin: 0;
}

/* Zone 3: Observatory */
.observatory-zone {
    min-height: 100vh;
    background: var(--midnight-grape);
    display: grid;
    position: relative;
}

.observatory-label {
    font-family: 'Inconsolata', monospace;
    font-size: 0.85rem;
    color: var(--electric-orchid);
    position: absolute;
    top: 2rem;
    left: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.8;
    z-index: 2;
}

.observatory-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(0, 245, 255, 0.24);
    box-shadow: 0 0 80px rgba(224, 64, 251, 0.18), inset 0 0 60px rgba(0, 245, 255, 0.09);
    z-index: 1;
    pointer-events: none;
}

.ring-one {
    width: 62vmin;
    height: 62vmin;
    transform: rotate(-11deg);
}

.ring-two {
    width: 38vmin;
    height: 38vmin;
    border-color: rgba(255, 244, 79, 0.2);
    transform: rotate(17deg) translate(18vw, -7vh);
}

/* Zone 4: Wave Theorem */
.wave-zone {
    position: relative;
    background: radial-gradient(ellipse at 30% 20%, rgba(255, 111, 255, 0.1) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(0, 245, 255, 0.1) 0%, transparent 50%),
                linear-gradient(135deg, var(--midnight-grape) 0%, var(--velvet-plum) 100%);
    display: block;
    padding: 8rem 2rem;
}

.wave-blocks {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 15vh;
    max-width: 1000px;
    margin: 0 auto;
}

.wave-block {
    background: rgba(232, 213, 245, 0.08);
    backdrop-filter: blur(12px) saturate(1.5);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    padding: 2rem;
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    color: var(--cotton-candy-white);
    box-shadow: 0 8px 32px rgba(224, 64, 251, 0.15), 0 2px 8px rgba(0, 0, 0, 0.3);
    opacity: 0;
    will-change: transform, opacity;
    transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.block-1 {
    margin-left: 5%;
    transform: rotate(-2deg);
}

.block-2 {
    margin-left: 55%;
    transform: rotate(1deg);
}

.block-3 {
    margin-left: 10%;
    transform: rotate(-1.5deg);
}

.block-4 {
    margin-left: 50%;
    transform: rotate(2deg);
}

.wave-block:hover {
    transform: rotate(0deg) translateY(-5px);
}

.wave-block p {
    margin: 0;
}

/* Zone 5: Dissolution */
.dissolution-zone {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--velvet-plum) 0%, var(--electric-orchid) 100%);
    display: grid;
    padding: 8rem 2rem;
}

.dissolution-container {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    opacity: 0;
    will-change: opacity;
    grid-column: 1 / -1;
    min-height: 68vh;
    display: grid;
    place-items: center;
}

.dissolve-card {
    position: absolute;
    padding: 1.2rem 1.5rem;
    font-family: 'Inconsolata', monospace;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    text-transform: lowercase;
    color: var(--deep-violet);
    background: rgba(254, 243, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(224, 64, 251, 0.15), 0 2px 8px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(12px) saturate(1.5);
}

.dissolve-card-1 {
    top: 4%;
    left: 1%;
    opacity: 1;
    transform: perspective(1200px) rotateX(3deg) rotateY(-3deg) rotate(-3deg);
}

.dissolve-card-2 {
    top: 34%;
    right: -3%;
    opacity: 0.62;
    transform: perspective(1200px) rotateX(7deg) rotateY(5deg) rotate(7deg);
}

.dissolve-card-3 {
    bottom: 10%;
    left: 16%;
    opacity: 0.3;
    transform: perspective(1200px) rotateX(12deg) rotateY(-8deg) rotate(-12deg);
}

.dissolution-text h2 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    color: var(--cotton-candy-white);
    opacity: 0.3;
    text-shadow: 0 0 40px currentColor;
    margin-bottom: 2rem;
    transform: rotate(6deg);
}

.dissolution-text p {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    color: var(--cotton-candy-white);
    opacity: 0.5;
    line-height: 1.75;
    transform: rotate(-4deg);
}

/* Bubble Styles */
.bubble {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 25%, rgba(255,255,255,0.5) 0%, rgba(224,64,251,0.15) 40%, rgba(0,245,255,0.1) 80%, transparent 100%);
    backdrop-filter: blur(2px);
    border: 1px solid rgba(255,255,255,0.2);
    will-change: transform, opacity;
    overflow: hidden;
}

.bubble::before {
    content: '';
    position: absolute;
    top: 18%;
    left: 28%;
    width: 25%;
    height: 25%;
    background: radial-gradient(circle, rgba(255,255,255,0.8) 0%, transparent 70%);
    border-radius: 50%;
}

.observatory-zone .bubble {
    background: radial-gradient(circle at 35% 25%, rgba(255,255,255,0.58) 0%, rgba(224,64,251,0.18) 38%, rgba(0,245,255,0.14) 78%, transparent 100%);
    border-color: rgba(255,255,255,0.28);
    box-shadow: 0 0 38px rgba(0, 245, 255, 0.13);
}

@keyframes bubble-rise {
    0% {
        transform: translateY(100vh) scale(0.3);
        opacity: 0;
    }
    20% {
        opacity: 0.8;
    }
    80% {
        opacity: 0.6;
    }
    100% {
        transform: translateY(-10vh) scale(1);
        opacity: 0;
    }
}

@keyframes bubble-wobble {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(15px);
    }
    75% {
        transform: translateX(-15px);
    }
}

/* Bubble Text */
.bubble-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: 'Inconsolata', monospace;
    font-size: 0.65rem;
    color: var(--cotton-candy-white);
    white-space: nowrap;
    text-align: center;
    z-index: 1;
}

/* Equation Field */
.equation-field {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.equation {
    position: absolute;
    font-family: 'Inconsolata', monospace;
    font-size: 0.7rem;
    color: var(--electric-orchid);
    opacity: 0.15;
    transform: rotate(-15deg);
    white-space: nowrap;
}

.eq-1 { top: 15%; left: 5%; }
.eq-2 { top: 35%; right: 8%; transform: rotate(10deg); }
.eq-3 { top: 55%; left: 10%; }
.eq-4 { top: 75%; right: 12%; transform: rotate(-20deg); }
.eq-5 { top: 45%; right: 5%; }

/* Zone Indicator */
.zone-indicator {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background: rgba(224, 64, 251, 0.2);
    border: 2px solid var(--electric-orchid);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(8px);
    animation: zonePulse 2s ease-in-out infinite;
}

.zone-number {
    font-family: 'Inconsolata', monospace;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--electric-orchid);
    text-shadow: 0 0 20px var(--electric-orchid);
}

@keyframes zonePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(224, 64, 251, 0.4); }
    50% { box-shadow: 0 0 0 10px rgba(224, 64, 251, 0); }
}

/* Ripple Effect */
@keyframes ripple-expand {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}

.ripple {
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--electric-orchid);
    animation: ripple-expand 1.2s ease-out forwards;
    pointer-events: none;
    z-index: 999;
}

@keyframes wave-shift {
    0%, 100% { transform: translateX(0) translateY(0); }
    50% { transform: translateX(-22px) translateY(6px); }
}

.wave-path {
    animation: wave-shift 7s ease-in-out infinite;
}

.wave-path:nth-child(2) {
    animation-duration: 9s;
    animation-delay: -1.5s;
}

.wave-path:nth-child(3) {
    animation-duration: 11s;
    animation-delay: -3s;
}

/* Responsive Design */
@media (max-width: 768px) {
    .zone {
        min-height: 60vh;
        padding: 2rem 1rem;
        grid-template-columns: 1fr;
    }

    .cascade-container {
        gap: 2rem;
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .card-1, .card-2, .card-3 {
        grid-column: 1;
        margin: 0;
    }

    .cascade-card {
        padding: 1.5rem;
        font-size: 1rem;
    }

    .wave-blocks {
        gap: 8vh;
    }

    .wave-block {
        padding: 1.5rem;
        font-size: 1rem;
        margin-left: 0 !important;
        transform: rotate(0deg) !important;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        margin-top: -28vh;
    }

    .dissolution-text h2 {
        font-size: 2rem;
    }

    .zone-indicator {
        width: 50px;
        height: 50px;
        bottom: 1rem;
        right: 1rem;
    }

    .zone-number {
        font-size: 1.2rem;
    }

    .equation {
        font-size: 0.6rem;
    }

    .dissolve-card {
        position: relative;
        inset: auto;
        margin: 0.5rem;
    }
}

/* Animation Performance */
.bubble {
    will-change: transform, opacity;
}

.cascade-card, .wave-block {
    will-change: transform, opacity;
}