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

:root {
    --bg-deepest: #0a0a0f;
    --bg-deep: #12121f;
    --bg-dark: #1a1a2e;
    --cyan: #00e5ff;
    --pink: #ff2d7b;
    --white: #ffffff;
    --muted: #a0a0b8;
    --dim: #505068;
}

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

body {
    background: var(--bg-deepest);
    color: var(--white);
    font-family: 'Inter', sans-serif;
    font-weight: 300;
    overflow-x: hidden;
}

/* === Progress Bar === */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 1px;
    width: 0%;
    background: linear-gradient(90deg, var(--cyan), var(--pink));
    z-index: 1000;
    transition: width 0.1s linear;
}

/* === Phases === */
.phase {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.phase-content {
    text-align: center;
    position: relative;
    z-index: 2;
    width: 100%;
}

/* === Kanji Characters === */
.kanji {
    font-family: 'Noto Serif JP', serif;
    font-weight: 200;
    font-size: clamp(8rem, 20vw, 18rem);
    line-height: 1;
    display: inline-block;
    opacity: 0;
    transition: opacity 0.8s ease, transform 1.2s cubic-bezier(0.23, 1, 0.32, 1);
}

.kanji-spear {
    color: var(--cyan);
    text-shadow: 0 0 60px rgba(0, 229, 255, 0.15);
    transform: translateX(-40px);
}

.kanji-spear.revealed {
    opacity: 1;
    transform: translateX(0);
}

.kanji-shield {
    color: var(--pink);
    text-shadow: 0 0 60px rgba(255, 45, 123, 0.15);
    transform: translateX(40px);
}

.kanji-shield.revealed {
    opacity: 1;
    transform: translateX(0);
}

/* === Phase 1: Spear === */
.phase-spear {
    background: var(--bg-deepest);
}

.spear-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
}

.spear-line {
    height: 1px;
    width: 0;
    background: var(--cyan);
    box-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
    transition: width 1s cubic-bezier(0.34, 1.56, 0.64, 1);
    flex-shrink: 0;
}

.spear-line.extended {
    width: 40vw;
}

/* === Phase 2: Shield === */
.phase-shield {
    background: var(--bg-deep);
}

.shield-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
}

.shield-line {
    height: 1px;
    width: 0;
    background: var(--pink);
    box-shadow: 0 0 8px rgba(255, 45, 123, 0.4);
    transition: width 1s cubic-bezier(0.34, 1.56, 0.64, 1);
    flex-shrink: 0;
}

.shield-line.extended {
    width: 40vw;
}

/* === Phase Text === */
.phase-text {
    margin-top: 3rem;
}

.romanji {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 300;
    font-size: clamp(0.75rem, 1.2vw, 1rem);
    color: var(--muted);
    letter-spacing: 0.15em;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.6s ease 0.4s, transform 0.6s ease 0.4s;
}

.romanji.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* === Phase 3: Collision === */
.phase-collision {
    background: var(--bg-dark);
}

.collision-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    position: relative;
}

.kanji-collision-left,
.kanji-collision-right {
    font-size: clamp(5rem, 12vw, 10rem);
    opacity: 0;
}

.kanji-collision-left {
    color: var(--cyan);
    transform: translateX(-60px);
}

.kanji-collision-left.revealed {
    opacity: 1;
    transform: translateX(0);
}

.kanji-collision-right {
    color: var(--pink);
    transform: translateX(60px);
}

.kanji-collision-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

.collision-point {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--white);
    opacity: 0;
    transition: opacity 0.3s ease, box-shadow 0.6s ease;
}

.collision-point.active {
    opacity: 1;
    box-shadow:
        0 0 20px var(--white),
        0 0 60px var(--cyan),
        0 0 100px var(--pink);
}

.collision-flash {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    opacity: 0;
    pointer-events: none;
    z-index: 10;
}

.collision-flash.flash {
    animation: flash-burst 0.8s ease-out forwards;
}

@keyframes flash-burst {
    0% { opacity: 0.7; }
    100% { opacity: 0; }
}

/* === Phase 4: Garden === */
.phase-garden {
    background: var(--bg-deepest);
    min-height: 100vh;
}

.garden-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4rem;
    width: 100%;
    max-width: 800px;
    padding: 0 2rem;
}

.garden-svg {
    width: 100%;
    max-width: 600px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1.2s ease, transform 1.2s ease;
}

.garden-svg.revealed {
    opacity: 1;
    transform: translateY(0);
}

.rake-line {
    stroke: var(--dim);
    stroke-width: 0.5;
    opacity: 0.4;
}

.rake-curve {
    stroke: var(--dim);
    stroke-width: 0.5;
    opacity: 0.4;
}

.garden-stone {
    fill: none;
    stroke: var(--muted);
    stroke-width: 0.5;
    opacity: 0.6;
}

.garden-text {
    text-align: center;
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 1s ease 0.5s, transform 1s ease 0.5s;
}

.garden-text.revealed {
    opacity: 1;
    transform: translateY(0);
}

.garden-quote {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 300;
    font-size: clamp(0.7rem, 1vw, 0.9rem);
    color: var(--muted);
    line-height: 2;
    letter-spacing: 0.1em;
    margin-bottom: 3rem;
}

.garden-domain {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    font-size: clamp(0.65rem, 0.9vw, 0.8rem);
    color: var(--dim);
    letter-spacing: 0.3em;
    text-transform: lowercase;
}

/* === Subtle grain overlay === */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 999;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}