/* =============================================
   ronri.org — Cinematic Logic Narrative
   Candy-bright palette, layered-depth layout
   ============================================= */

/* --- CSS Custom Properties --- */
:root {
    --coral-warm: #FF8A80;
    --mint-fresh: #A7F3D0;
    --neon-violet: #8B5CF6;
    --deep-candy: #6D28D9;
    --lemon-light: #FEF08A;
    --fish-teal: #2DD4BF;
    --cream-base: #FFF7ED;

    --font-headline: 'Space Grotesk', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

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

body {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(16px, 1.5vw, 18px);
    line-height: 1.75;
    color: var(--deep-candy);
    background: var(--cream-base);
    overflow-x: hidden;
}

/* --- Scene (Layered Depth) --- */
.scene {
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scene-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

.scene-mid {
    position: relative;
    z-index: 2;
    max-width: 860px;
    width: 90%;
    padding: 80px 0;
}

.scene-fg {
    position: absolute;
    inset: 0;
    z-index: 3;
    pointer-events: none;
}

/* =============================================
   OPENING SCENE
   ============================================= */
#opening-scene {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--coral-warm) 0%, var(--mint-fresh) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

#opening-scene .scene-mid {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0;
}

/* Geometric background shapes */
.geo-shape {
    position: absolute;
    opacity: 0.15;
}

.geo-circle {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: var(--lemon-light);
    top: 10%;
    left: 5%;
}

.geo-circle-2 {
    width: 180px;
    height: 180px;
    background: var(--neon-violet);
    top: 60%;
    left: 70%;
    opacity: 0.12;
}

.geo-triangle {
    width: 0;
    height: 0;
    border-left: 120px solid transparent;
    border-right: 120px solid transparent;
    border-bottom: 200px solid var(--cream-base);
    top: 15%;
    right: 10%;
    opacity: 0.1;
}

.geo-rect {
    width: 200px;
    height: 80px;
    background: var(--deep-candy);
    bottom: 20%;
    left: 15%;
    transform: rotate(-12deg);
    border-radius: 8px;
    opacity: 0.1;
}

.geo-diamond {
    width: 120px;
    height: 120px;
    background: var(--fish-teal);
    transform: rotate(45deg);
    bottom: 30%;
    right: 20%;
    opacity: 0.12;
}

/* Wordmark */
.wordmark {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: clamp(48px, 10vw, 120px);
    letter-spacing: -0.02em;
    color: var(--cream-base);
    position: relative;
    display: inline-block;
    text-shadow: 0 2px 30px rgba(109, 40, 217, 0.2);
}

.wordmark-text {
    display: inline-block;
}

.wordmark-underline {
    position: absolute;
    bottom: -4px;
    left: 0;
    height: 6px;
    width: 0;
    background: var(--neon-violet);
    border-radius: 3px;
    box-shadow: 0 0 10px var(--neon-violet), 0 0 20px var(--neon-violet), 0 0 40px var(--neon-violet);
    animation: underlineDraw 0.4s ease-out 0.6s forwards;
}

@keyframes underlineDraw {
    to {
        width: 100%;
    }
}

.wordmark-kanji {
    font-family: var(--font-headline);
    font-size: clamp(24px, 4vw, 48px);
    color: var(--cream-base);
    opacity: 0.85;
    margin-top: 12px;
    letter-spacing: 0.15em;
}

.wordmark-subtitle {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: clamp(14px, 2vw, 22px);
    color: var(--cream-base);
    opacity: 0.75;
    margin-top: 16px;
    letter-spacing: 0.05em;
}

/* =============================================
   FISH ANIMATIONS (Opening Scene Foreground)
   ============================================= */
.fish {
    position: absolute;
    filter: drop-shadow(0 0 8px var(--neon-violet)) drop-shadow(0 0 16px var(--neon-violet));
}

.fish-1 {
    width: 80px;
    top: 70%;
    animation: swim1 12s linear infinite;
}

.fish-2 {
    width: 60px;
    top: 78%;
    animation: swim2 16s linear infinite;
    animation-delay: -4s;
}

.fish-3 {
    width: 70px;
    top: 65%;
    animation: swim3 14s linear infinite;
    animation-delay: -8s;
}

.fish-4 {
    width: 50px;
    top: 82%;
    animation: swim4 18s linear infinite;
    animation-delay: -2s;
}

.fish-5 {
    width: 55px;
    top: 60%;
    animation: swim5 20s linear infinite;
    animation-delay: -10s;
}

@keyframes swim1 {
    0%   { transform: translateX(-100px) translateY(0); }
    25%  { transform: translateX(25vw) translateY(-20px); }
    50%  { transform: translateX(50vw) translateY(0); }
    75%  { transform: translateX(75vw) translateY(20px); }
    100% { transform: translateX(calc(100vw + 100px)) translateY(0); }
}

@keyframes swim2 {
    0%   { transform: translateX(-80px) translateY(0); }
    25%  { transform: translateX(25vw) translateY(15px); }
    50%  { transform: translateX(50vw) translateY(-5px); }
    75%  { transform: translateX(75vw) translateY(-18px); }
    100% { transform: translateX(calc(100vw + 80px)) translateY(0); }
}

@keyframes swim3 {
    0%   { transform: translateX(-90px) translateY(0); }
    25%  { transform: translateX(25vw) translateY(-25px); }
    50%  { transform: translateX(50vw) translateY(10px); }
    75%  { transform: translateX(75vw) translateY(-10px); }
    100% { transform: translateX(calc(100vw + 90px)) translateY(0); }
}

@keyframes swim4 {
    0%   { transform: translateX(-70px) translateY(0); }
    25%  { transform: translateX(25vw) translateY(12px); }
    50%  { transform: translateX(50vw) translateY(-8px); }
    75%  { transform: translateX(75vw) translateY(15px); }
    100% { transform: translateX(calc(100vw + 70px)) translateY(0); }
}

@keyframes swim5 {
    0%   { transform: translateX(-60px) translateY(0); }
    25%  { transform: translateX(25vw) translateY(-30px); }
    50%  { transform: translateX(50vw) translateY(5px); }
    75%  { transform: translateX(75vw) translateY(25px); }
    100% { transform: translateX(calc(100vw + 60px)) translateY(0); }
}

/* =============================================
   NEON GLOW EFFECT
   ============================================= */
.neon-glow {
    color: var(--neon-violet);
    text-shadow:
        0 0 10px var(--neon-violet),
        0 0 20px var(--neon-violet),
        0 0 40px var(--neon-violet);
}

/* =============================================
   UNDERLINE DRAW
   ============================================= */
.underline-draw {
    position: relative;
    display: inline;
}

.underline-draw::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--neon-violet);
    border-radius: 2px;
    box-shadow: 0 0 6px var(--neon-violet), 0 0 12px var(--neon-violet);
    transition: width 0.3s ease-out;
}

.underline-draw.is-visible::after {
    width: 100%;
}

/* =============================================
   ACT SCENES
   ============================================= */
.scene-alt {
    background: var(--cream-base);
}

#act-proposition {
    background: var(--cream-base);
}

#act-connectives {
    background: linear-gradient(135deg, var(--mint-fresh) 0%, var(--lemon-light) 100%);
}

#act-syllogism {
    background: var(--cream-base);
}

#act-truth {
    background: linear-gradient(135deg, var(--lemon-light) 0%, var(--coral-warm) 100%);
}

/* Scene Titles */
.scene-title {
    font-family: var(--font-headline);
    font-weight: 500;
    font-size: clamp(16px, 2vw, 22px);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.scene-heading {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: clamp(28px, 5vw, 64px);
    letter-spacing: -0.02em;
    color: var(--deep-candy);
    margin-bottom: 40px;
}

.body-text {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(16px, 1.5vw, 18px);
    line-height: 1.75;
    color: var(--deep-candy);
    margin-bottom: 24px;
}

/* Logic Block (Act I) */
.logic-block {
    margin-top: 20px;
}

.logic-notation {
    font-family: var(--font-mono);
    font-size: 14px;
    background: rgba(109, 40, 217, 0.08);
    border-left: 4px solid var(--neon-violet);
    padding: 16px 24px;
    margin: 24px 0;
    border-radius: 0 8px 8px 0;
}

.logic-symbol {
    font-size: 20px;
    font-weight: 700;
}

.logic-desc {
    font-style: italic;
    opacity: 0.85;
}

/* Scene fish (floating in scenes) */
.fish-scene {
    animation: floatFish 8s ease-in-out infinite;
}

.fish-scene-1 {
    width: 70px;
    bottom: 15%;
    right: 8%;
    animation-delay: 0s;
}

.fish-scene-2 {
    width: 50px;
    top: 20%;
    left: 5%;
    animation-delay: -2s;
}

.fish-scene-3 {
    width: 45px;
    bottom: 25%;
    right: 12%;
    animation-delay: -4s;
}

.fish-scene-4 {
    width: 65px;
    top: 18%;
    right: 6%;
    animation-delay: -1s;
}

.fish-scene-5 {
    width: 40px;
    bottom: 20%;
    left: 8%;
    animation-delay: -3s;
}

@keyframes floatFish {
    0%, 100% { transform: translateY(0) translateX(0); }
    25%      { transform: translateY(-15px) translateX(10px); }
    50%      { transform: translateY(5px) translateX(-5px); }
    75%      { transform: translateY(-10px) translateX(15px); }
}

/* Additional geometric shapes for act scenes */
.geo-rect-wide {
    width: 300px;
    height: 60px;
    background: var(--coral-warm);
    top: 20%;
    right: -50px;
    transform: rotate(8deg);
    border-radius: 8px;
    opacity: 0.08;
}

.geo-circle-small {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--neon-violet);
    bottom: 15%;
    left: 10%;
    opacity: 0.08;
}

.geo-diamond-2 {
    width: 80px;
    height: 80px;
    background: var(--coral-warm);
    top: 25%;
    left: 8%;
    opacity: 0.1;
}

.geo-triangle-2 {
    width: 0;
    height: 0;
    border-left: 80px solid transparent;
    border-right: 80px solid transparent;
    border-bottom: 140px solid var(--deep-candy);
    bottom: 10%;
    right: 5%;
    opacity: 0.06;
}

.geo-circle-large {
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: var(--mint-fresh);
    top: -100px;
    right: -100px;
    opacity: 0.15;
}

.geo-rect-tall {
    width: 80px;
    height: 250px;
    background: var(--deep-candy);
    top: 10%;
    left: 5%;
    transform: rotate(-5deg);
    border-radius: 8px;
    opacity: 0.06;
}

.geo-diamond-3 {
    width: 100px;
    height: 100px;
    background: var(--cream-base);
    transform: rotate(45deg);
    bottom: 15%;
    right: 10%;
    opacity: 0.12;
}

/* =============================================
   CONNECTIVES GRID (Act II)
   ============================================= */
.connectives-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 16px;
}

.connective-card {
    background: rgba(255, 247, 237, 0.85);
    border-radius: 16px;
    padding: 32px 28px;
    border: 2px solid rgba(139, 92, 246, 0.15);
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.connective-card:hover {
    border-color: var(--neon-violet);
    transform: translateY(-4px);
}

.connective-symbol {
    display: block;
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 24px;
    margin-bottom: 8px;
}

.connective-notation {
    display: block;
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--deep-candy);
    opacity: 0.7;
    margin-bottom: 12px;
}

.connective-desc {
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
    color: var(--deep-candy);
}

/* =============================================
   LOGIC AQUARIUM
   ============================================= */
.scene-aquarium {
    min-height: 100vh;
    background: linear-gradient(180deg, #1a0533 0%, #0f0a1e 50%, #0d1b2a 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.aquarium-bg {
    background: radial-gradient(ellipse at 50% 50%, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
}

.aquarium-mid {
    text-align: center;
    padding-top: 60px;
    padding-bottom: 20px;
}

.aquarium-title {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: clamp(28px, 5vw, 56px);
    letter-spacing: -0.02em;
    color: var(--cream-base);
    margin-bottom: 12px;
}

.aquarium-subtitle {
    font-family: var(--font-body);
    font-size: clamp(14px, 1.5vw, 18px);
    color: var(--cream-base);
    opacity: 0.5;
}

.aquarium-fg {
    width: 100%;
    height: 100%;
    position: absolute;
    inset: 0;
}

/* Fish groups */
.fish-group {
    position: absolute;
}

.syllogism-group {
    top: 30%;
    left: -120px;
    animation: groupSwim 18s linear infinite;
}

.syllogism-group .aquarium-fish {
    position: absolute;
    width: 60px;
    filter: drop-shadow(0 0 8px var(--neon-violet)) drop-shadow(0 0 16px var(--neon-violet));
}

.syllogism-group .aquarium-fish:nth-child(1) {
    top: 0;
    left: 0;
}

.syllogism-group .aquarium-fish:nth-child(2) {
    top: -30px;
    left: 70px;
}

.syllogism-group .aquarium-fish:nth-child(3) {
    top: 30px;
    left: 70px;
}

.ifthen-group {
    top: 55%;
    left: -200px;
    animation: groupSwim 22s linear infinite;
    animation-delay: -6s;
}

.ifthen-group .aquarium-fish {
    position: absolute;
    width: 45px;
    filter: drop-shadow(0 0 6px var(--neon-violet)) drop-shadow(0 0 12px var(--neon-violet));
}

.ifthen-group .aquarium-fish:nth-child(1) {
    top: 0;
    left: 0;
}

.ifthen-group .aquarium-fish:nth-child(2) {
    top: 0;
    left: 55px;
}

.ifthen-group .aquarium-fish:nth-child(3) {
    top: 0;
    left: 110px;
}

.ifthen-group .aquarium-fish:nth-child(4) {
    top: 0;
    left: 165px;
}

.negation-group {
    top: 75%;
    right: -120px;
    animation: groupSwimReverse 15s linear infinite;
    animation-delay: -3s;
}

.negation-group .aquarium-fish {
    width: 65px;
    filter: drop-shadow(0 0 8px var(--coral-warm)) drop-shadow(0 0 16px var(--coral-warm));
}

.formation-label {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
    margin-top: 50px;
    text-align: center;
}

@keyframes groupSwim {
    0%   { transform: translateX(0) translateY(0); }
    25%  { transform: translateX(30vw) translateY(-20px); }
    50%  { transform: translateX(60vw) translateY(10px); }
    75%  { transform: translateX(90vw) translateY(-15px); }
    100% { transform: translateX(calc(100vw + 250px)) translateY(0); }
}

@keyframes groupSwimReverse {
    0%   { transform: translateX(0) translateY(0); }
    25%  { transform: translateX(-25vw) translateY(15px); }
    50%  { transform: translateX(-50vw) translateY(-10px); }
    75%  { transform: translateX(-75vw) translateY(20px); }
    100% { transform: translateX(calc(-100vw - 200px)) translateY(0); }
}

/* =============================================
   SYLLOGISM (Act III)
   ============================================= */
.syllogism-block {
    background: rgba(139, 92, 246, 0.05);
    border-radius: 16px;
    padding: 40px 36px;
    margin-bottom: 32px;
    border: 1px solid rgba(139, 92, 246, 0.12);
}

.syllogism-premise {
    margin-bottom: 20px;
}

.premise-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 6px;
}

.logic-code {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--deep-candy);
    line-height: 1.6;
}

.syllogism-line {
    height: 2px;
    background: linear-gradient(90deg, var(--neon-violet), transparent);
    margin: 24px 0;
    border-radius: 1px;
    box-shadow: 0 0 8px var(--neon-violet);
}

.syllogism-conclusion {
    margin-top: 20px;
}

/* =============================================
   TRUTH TABLE (Act IV)
   ============================================= */
.truth-table-wrapper {
    overflow-x: auto;
    margin-top: 32px;
}

.truth-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 14px;
}

.truth-table th {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 16px;
    padding: 16px 20px;
    text-align: center;
    border-bottom: 3px solid var(--deep-candy);
    color: var(--deep-candy);
}

.truth-table td {
    padding: 14px 20px;
    text-align: center;
    border-bottom: 1px solid rgba(109, 40, 217, 0.1);
    font-weight: 500;
    font-size: 16px;
}

.truth-table tbody tr {
    transition: background 0.2s ease;
}

.truth-table tbody tr:hover {
    background: rgba(139, 92, 246, 0.06);
}

.val-true {
    color: var(--fish-teal);
}

.val-false {
    color: var(--coral-warm);
}

/* =============================================
   CREDITS FOOTER
   ============================================= */
.scene-credits {
    min-height: 50vh;
    background: var(--deep-candy);
    display: flex;
    align-items: center;
    justify-content: center;
}

.credits-bg .fish-credit {
    position: absolute;
    animation: floatFish 10s ease-in-out infinite;
}

.fish-credit-1 {
    width: 90px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.fish-credit-2 {
    width: 60px;
    bottom: 25%;
    right: 15%;
    animation-delay: -3s;
}

.fish-credit-3 {
    width: 75px;
    top: 50%;
    right: 30%;
    animation-delay: -6s;
}

.credits-mid {
    text-align: center;
}

.credits-title {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: clamp(32px, 5vw, 56px);
    letter-spacing: -0.02em;
    color: var(--cream-base);
}

.credits-kanji {
    font-family: var(--font-headline);
    font-size: clamp(20px, 3vw, 36px);
    color: var(--cream-base);
    opacity: 0.6;
    margin-top: 8px;
}

.credits-tagline {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: clamp(14px, 1.5vw, 20px);
    color: var(--cream-base);
    opacity: 0.7;
    margin-top: 20px;
}

.credits-divider {
    width: 80px;
    height: 2px;
    background: var(--neon-violet);
    box-shadow: 0 0 10px var(--neon-violet), 0 0 20px var(--neon-violet);
    margin: 24px auto;
    border-radius: 1px;
}

.credits-note {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--cream-base);
    opacity: 0.4;
}

/* =============================================
   SCROLL-TRIGGERED ANIMATIONS
   ============================================= */
.scene-mid {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scene-mid.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Opening scene mid is always visible */
#opening-scene .scene-mid {
    opacity: 1;
    transform: translateY(0);
}

/* =============================================
   PARALLAX SUBTLE DEPTH
   ============================================= */
.scene-bg .geo-shape {
    transition: transform 0.1s linear;
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 768px) {
    .connectives-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .connective-card {
        padding: 24px 20px;
    }

    .syllogism-block {
        padding: 28px 20px;
    }

    .truth-table th,
    .truth-table td {
        padding: 10px 12px;
        font-size: 13px;
    }

    .scene-mid {
        width: 92%;
        padding: 60px 0;
    }

    .fish-1, .fish-2, .fish-3, .fish-4, .fish-5 {
        transform: scale(0.7);
    }

    .aquarium-title {
        font-size: clamp(24px, 6vw, 40px);
    }
}

@media (max-width: 480px) {
    .wordmark {
        font-size: clamp(36px, 12vw, 64px);
    }

    .scene-heading {
        font-size: clamp(24px, 7vw, 40px);
    }

    .truth-table th,
    .truth-table td {
        padding: 8px 8px;
        font-size: 12px;
    }
}