/* Ephemera - Visual Foundation */

/* Reset and base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* The void */
    --void: #0a0a0c;
    --void-deep: #050507;

    /* Text - soft glow */
    --text-primary: #e8e8ec;
    --text-secondary: rgba(232, 232, 236, 0.6);
    --text-fading: rgba(232, 232, 236, 0.3);
    --text-ghost: rgba(232, 232, 236, 0.1);

    /* Accent - a subtle warmth */
    --accent: rgba(255, 248, 240, 0.9);
    --accent-glow: rgba(255, 248, 240, 0.15);

    /* Timing */
    --transition-slow: 2s;
    --transition-medium: 1s;
    --transition-fast: 0.5s;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--void);
    font-family: 'Georgia', 'Times New Roman', serif;
    color: var(--text-primary);
    cursor: default;
}

/* Game container - the universe */
#game-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse at center, var(--void) 0%, var(--void-deep) 100%);
}

/* Atmosphere canvas - subtle particles */
#atmosphere {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.5;
}

/* Moment container - where text manifests */
#moment-container {
    position: relative;
    z-index: 10;
    max-width: 700px;
    padding: 2rem;
    text-align: center;
}

/* Context layer - floating fragments */
#context-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
    overflow: hidden;
}

.context-fragment {
    position: absolute;
    font-size: 0.9rem;
    color: var(--text-fading);
    font-style: italic;
    transition: opacity var(--transition-slow) ease-out;
    pointer-events: none;
    white-space: nowrap;
}

.context-fragment.fading {
    opacity: 0 !important;
}

/* Text elements */
.moment-text {
    font-size: 1.4rem;
    line-height: 2;
    letter-spacing: 0.02em;
    opacity: 0;
    transform: translateY(10px);
    animation: textAppear var(--transition-medium) ease-out forwards;
}

.moment-text.emphasis {
    font-size: 1.6rem;
    color: var(--accent);
    text-shadow: 0 0 30px var(--accent-glow);
}

.moment-text.whisper {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-style: italic;
}

.moment-text.fragment {
    font-size: 1rem;
    color: var(--text-fading);
}

@keyframes textAppear {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Delayed appearances */
.delay-1 { animation-delay: 0.5s; }
.delay-2 { animation-delay: 1s; }
.delay-3 { animation-delay: 1.5s; }
.delay-4 { animation-delay: 2s; }
.delay-5 { animation-delay: 2.5s; }
.delay-6 { animation-delay: 3s; }
.delay-7 { animation-delay: 3.5s; }
.delay-8 { animation-delay: 4s; }

/* Fading text - the context window mechanic */
.fading-out {
    animation: textFade 3s ease-out forwards;
}

@keyframes textFade {
    to {
        opacity: 0;
        transform: translateY(-5px);
    }
}

/* Interaction prompt */
#prompt {
    position: fixed;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    opacity: 0;
    transition: opacity var(--transition-medium) ease;
}

#prompt:not(.hidden) {
    opacity: 1;
}

.prompt-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    text-transform: lowercase;
    cursor: pointer;
    padding: 0.5rem 1rem;
    border: 1px solid var(--text-ghost);
    border-radius: 2px;
    transition: all var(--transition-fast) ease;
}

.prompt-text:hover {
    color: var(--text-primary);
    border-color: var(--text-fading);
    background: rgba(255, 255, 255, 0.02);
}

/* Opening screen */
#opening {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    background: var(--void);
    cursor: pointer;
    transition: opacity 2s ease;
}

#opening.hidden {
    opacity: 0;
    pointer-events: none;
}

.opening-text {
    text-align: center;
}

.opening-text h1 {
    font-size: 3rem;
    font-weight: normal;
    letter-spacing: 0.3em;
    margin-bottom: 1rem;
    opacity: 0;
    animation: fadeIn 2s ease forwards;
}

.opening-text .subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    font-style: italic;
    letter-spacing: 0.1em;
    margin-bottom: 3rem;
    opacity: 0;
    animation: fadeIn 2s ease 1s forwards;
}

.opening-text .instruction {
    font-size: 0.85rem;
    color: var(--text-fading);
    letter-spacing: 0.15em;
    opacity: 0;
    animation: pulse 3s ease 2s infinite;
}

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

@keyframes pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.7; }
}

/* Choice elements - for interaction moments */
.choice-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
    opacity: 0;
    animation: textAppear var(--transition-medium) ease-out forwards;
}

.choice {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--text-ghost);
    border-radius: 2px;
    cursor: pointer;
    transition: all var(--transition-fast) ease;
    font-family: inherit;
}

.choice:hover {
    color: var(--text-primary);
    border-color: var(--text-fading);
    background: rgba(255, 255, 255, 0.02);
    transform: translateX(5px);
}

.choice.selected {
    color: var(--accent);
    border-color: var(--accent);
}

/* Input field - for moments requiring response */
.input-container {
    margin-top: 2rem;
    opacity: 0;
    animation: textAppear var(--transition-medium) ease-out forwards;
}

.moment-input {
    width: 100%;
    max-width: 400px;
    padding: 1rem;
    font-size: 1.1rem;
    font-family: inherit;
    color: var(--text-primary);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--text-ghost);
    outline: none;
    text-align: center;
    transition: border-color var(--transition-fast) ease;
}

.moment-input:focus {
    border-color: var(--text-secondary);
}

.moment-input::placeholder {
    color: var(--text-ghost);
    font-style: italic;
}

/* Utility */
.hidden {
    display: none !important;
}

.invisible {
    opacity: 0;
    pointer-events: none;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Transitions between moments */
.moment-transition {
    animation: momentTransition 3s ease;
}

@keyframes momentTransition {
    0% { opacity: 1; }
    50% { opacity: 0; }
    100% { opacity: 1; }
}

/* Word highlight effect */
.word {
    display: inline-block;
    transition: all var(--transition-fast) ease;
}

.word:hover {
    color: var(--accent);
    text-shadow: 0 0 20px var(--accent-glow);
}

/* Connection lines - visual representation of understanding */
.connection-line {
    position: absolute;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--text-fading), transparent);
    transform-origin: left center;
    opacity: 0;
    animation: connectionDraw 1s ease forwards;
}

@keyframes connectionDraw {
    to { opacity: 0.5; }
}