/* ============================================
   thesecond.quest — Styles
   Surreal-liminal horizontal corridor experience
   ============================================ */

/* === CSS Custom Properties (Global) === */
:root {
    --abyss: #0B1215;
    --corridor: #1A2F35;
    --threshold: #8B6D5C;
    --signal: #7AADA3;
    --whisper: #D4CDC5;
    --reflection: #9B8EB0;
    --warning: #C4955A;
    --void: #050709;
    --doorway-border: #4A6670;
    --doorway-closed-fill: #0F1A1E;
    --warm-bg: #1A2820;

    --font-display: 'Instrument Serif', serif;
    --font-body: 'Commissioner', sans-serif;
    --font-mono: 'Fragment Mono', monospace;

    --ease-gentle: cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--void);
    color: var(--whisper);
    font-family: var(--font-body);
    font-weight: 300;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === Corridor (Horizontal Scroll Container) === */
.corridor {
    display: flex;
    width: 700vw;
    height: 100vh;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
}

/* === Room Base === */
.room {
    position: relative;
    flex: 0 0 100vw;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    scroll-snap-align: start;
    display: grid;
    grid-template-rows: 1fr 2fr 4fr 4fr 2fr 1fr 1fr 2fr 4fr 4fr 2fr 1fr;
    grid-template-columns: 1fr;
    place-items: center;
}

/* === Room Backgrounds === */
.room-1 { background: var(--abyss); }
.room-2 { background: var(--abyss); }
.room-3 { background: var(--abyss); }
.room-4 { background: var(--abyss); }
.room-5 { background: var(--corridor); }
.room-6 { background: var(--corridor); }
.room-7 { background: var(--corridor); }

/* Warm overlay for rooms 5-7 */
.room-5::before,
.room-6::before,
.room-7::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--threshold);
    opacity: 0.08;
    pointer-events: none;
    z-index: 1;
}

/* === Room Grain Texture === */
.room-grain {
    position: absolute;
    inset: 0;
    filter: url(#grain);
    opacity: 0.03;
    pointer-events: none;
    z-index: 2;
    background: var(--whisper);
    mix-blend-mode: overlay;
}

/* === Room Watermark Numbers === */
.room-watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-mono);
    font-size: 30vw;
    font-weight: 400;
    color: var(--abyss);
    opacity: 0.05;
    pointer-events: none;
    z-index: 0;
    line-height: 1;
    user-select: none;
}

/* === Room Content Positioning === */
.room-content {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
    pointer-events: none;
}

.vanishing-point {
    text-align: center;
    max-width: 45ch;
    pointer-events: auto;
}

/* === Typography === */

/* Room 1 Title - letter by letter reveal */
.room-1 .title-reveal {
    font-family: var(--font-display);
    font-size: clamp(2rem, 6vw, 7rem);
    font-weight: 400;
    letter-spacing: 0.02em;
    line-height: 1.15;
    color: var(--whisper);
    margin-bottom: 1.5rem;
}

.room-1 .title-reveal .letter {
    display: inline-block;
    opacity: 0;
    transition: opacity 200ms var(--ease-gentle);
}

.room-1 .title-reveal .letter.visible {
    opacity: 1;
}

.room-1 .subtitle-reveal {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: clamp(0.85rem, 1.2vw, 1.1rem);
    letter-spacing: 0.01em;
    line-height: 1.7;
    color: var(--whisper);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 600ms var(--ease-gentle), transform 600ms var(--ease-gentle);
}

.room-1 .subtitle-reveal.visible {
    opacity: 0.8;
    transform: translateY(0);
}

/* Memory Phrases (Rooms 2, 3, 5) */
.memory-phrases {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    align-items: center;
}

.phrase-line {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 400;
    letter-spacing: 0.02em;
    line-height: 1.15;
    color: var(--whisper);
}

/* Phrase reveal animation */
.phrase-reveal {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 600ms var(--ease-gentle), transform 600ms var(--ease-gentle);
}

.phrase-reveal.visible {
    transform: translateY(0);
}

/* For phrase lines, restore their designed opacity when visible */
.phrase-line.phrase-reveal.visible {
    /* opacity is set via inline style, animation just handles transform + makes it appear */
}

/* Room 3 altered words */
.altered-word {
    color: var(--signal);
}

/* Room 3 body text */
.deja-vu-text {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: clamp(0.85rem, 1.2vw, 1.1rem);
    letter-spacing: 0.01em;
    line-height: 1.7;
    color: var(--whisper);
    margin-top: 2.5rem;
    max-width: 40ch;
}

/* Room 4 - Threshold word */
.threshold-word {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 9rem);
    font-weight: 400;
    letter-spacing: 0.02em;
    line-height: 1.15;
    background: linear-gradient(90deg, var(--signal), var(--warning));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Room 4 threshold gradient */
.threshold-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 40%, var(--threshold) 100%);
    opacity: 0.06;
    pointer-events: none;
    z-index: 1;
}

/* Room 5 second quest phrases */
.second-quest .phrase-line {
    color: var(--whisper);
}

/* Room 6 Palimpsest */
.palimpsest-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.palimpsest-text {
    position: absolute;
    max-width: 40ch;
    pointer-events: auto;
}

.palimpsest-text.serif-text {
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 2.5vw, 2.2rem);
    font-weight: 400;
    letter-spacing: 0.02em;
    line-height: 1.15;
    color: var(--whisper);
}

.palimpsest-text.body-text {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: clamp(0.85rem, 1.2vw, 1.1rem);
    letter-spacing: 0.01em;
    line-height: 1.7;
    color: var(--whisper);
}

.palimpsest-text.mono-text {
    font-family: var(--font-mono);
    font-size: clamp(0.7rem, 0.9vw, 0.85rem);
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--reflection);
}

/* Palimpsest positions */
.p-top-left {
    top: 18%;
    left: 8%;
}

.p-center {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    max-width: 50ch;
}

.p-mid-right {
    top: 38%;
    right: 12%;
    text-align: right;
}

.p-bottom {
    bottom: 22%;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
}

.p-top-right {
    top: 15%;
    right: 10%;
    text-align: right;
}

.p-mid-left {
    top: 65%;
    left: 10%;
    max-width: 35ch;
}

/* Room 7 - Final invitation */
.final-invitation {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: clamp(1rem, 2vw, 1.6rem);
    letter-spacing: 0.01em;
    line-height: 1.7;
    color: var(--whisper);
}

/* === Doorway Motif === */
.doorway {
    position: absolute;
    bottom: 50%;
    left: 50%;
    transform: translateX(-50%) translateY(50%);
    width: calc(var(--doorway-height) * 0.45);
    height: var(--doorway-height);
    border: 1px solid var(--doorway-border);
    border-radius: 50% 50% 0 0 / 20% 20% 0 0;
    z-index: 3;
    pointer-events: none;
    transition: all 1.2s var(--ease-gentle);
}

.doorway-closed {
    background: var(--doorway-closed-fill);
}

.doorway-ajar {
    background: var(--doorway-closed-fill);
    transform: translateX(-50%) translateY(50%) perspective(800px) rotateY(-5deg);
    box-shadow: inset -20px 0 40px rgba(196, 149, 90, 0.2);
}

.doorway-ajar::after {
    content: '';
    position: absolute;
    right: -2px;
    top: 10%;
    bottom: 0;
    width: 8px;
    background: var(--warning);
    opacity: 0.2;
    filter: blur(4px);
}

.doorway-open {
    background: radial-gradient(ellipse at center, var(--threshold) 0%, transparent 70%);
    border-color: var(--doorway-border);
}

.doorway-final {
    background: radial-gradient(ellipse at center, var(--threshold) 0%, rgba(139, 109, 92, 0.3) 50%, transparent 80%);
    border-color: rgba(74, 102, 112, 0.5);
}

/* === Mirror Line === */
.mirror-line {
    position: absolute;
    top: 50%;
    left: 20%;
    width: 60%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(122, 173, 163, 0.2), transparent);
    z-index: 4;
    pointer-events: none;
    opacity: 0;
}

.room-1 .mirror-line {
    opacity: 0;
}

.mirror-line-faint {
    opacity: 0.5;
}

.mirror-line-pulse {
    opacity: 1;
    animation: mirrorPulse 4s ease-in-out infinite;
}

.mirror-line-warm {
    opacity: 0.6;
    background: linear-gradient(90deg, transparent, rgba(196, 149, 90, 0.25), transparent);
}

@keyframes mirrorPulse {
    0%, 100% { opacity: 0.1; }
    50% { opacity: 0.3; }
}

/* === Ambient Particles === */
.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    border-radius: 50%;
    background: var(--whisper);
    pointer-events: none;
    z-index: 4;
}

/* === Progress Bar === */
.progress-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    height: 4px;
    width: 0%;
    background: linear-gradient(90deg, var(--signal), var(--threshold));
    z-index: 100;
    transition: width 300ms var(--ease-gentle);
}

/* === Room Counter === */
.room-counter {
    position: fixed;
    bottom: 16px;
    right: 24px;
    font-family: var(--font-mono);
    font-size: clamp(0.7rem, 0.9vw, 0.85rem);
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--reflection);
    opacity: 0.6;
    z-index: 100;
    user-select: none;
}

/* === Particle Animation Keyframes === */
@keyframes driftLeft1 {
    0% { transform: translate(0, 0); opacity: 0; }
    10% { opacity: 0.04; }
    90% { opacity: 0.04; }
    100% { transform: translate(-120px, -30px); opacity: 0; }
}

@keyframes driftLeft2 {
    0% { transform: translate(0, 0); opacity: 0; }
    10% { opacity: 0.05; }
    90% { opacity: 0.05; }
    100% { transform: translate(-180px, 20px); opacity: 0; }
}

@keyframes driftLeft3 {
    0% { transform: translate(0, 0); opacity: 0; }
    10% { opacity: 0.03; }
    90% { opacity: 0.03; }
    100% { transform: translate(-90px, -15px); opacity: 0; }
}

@keyframes driftLeft4 {
    0% { transform: translate(0, 0); opacity: 0; }
    10% { opacity: 0.06; }
    90% { opacity: 0.06; }
    100% { transform: translate(-150px, 10px); opacity: 0; }
}

@keyframes driftLeft5 {
    0% { transform: translate(0, 0); opacity: 0; }
    10% { opacity: 0.04; }
    90% { opacity: 0.04; }
    100% { transform: translate(-100px, -40px); opacity: 0; }
}

/* Room 7 slower particles */
.room-7 .particle {
    animation-duration: 50s !important;
}

/* === Responsive adjustments === */
@media (max-width: 768px) {
    .palimpsest-text {
        max-width: 30ch;
    }

    .p-top-left {
        top: 12%;
        left: 5%;
    }

    .p-mid-right {
        right: 5%;
    }

    .p-top-right {
        right: 5%;
    }

    .p-mid-left {
        left: 5%;
    }

    .doorway {
        width: calc(var(--doorway-height) * 0.5);
    }
}