/* Base Styles and Layout */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Base Typography */
    --font-primary: 'Georgia', 'Times New Roman', serif;
    --font-secondary: 'Arial', sans-serif;
    --font-size-base: 1.1rem;
    --font-size-large: 1.4rem;
    --font-size-small: 0.9rem;
    --line-height: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Layout */
    --container-max-width: 800px;
    --border-radius: 8px;
    --transition-speed: 0.3s;
    
    /* Z-index layers */
    --z-loading: 1000;
    --z-menu: 900;
    --z-navigation: 100;
    --z-content: 1;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    background: var(--primary-bg);
    color: var(--text-color);
    overflow-x: hidden;
    transition: background-color var(--transition-speed) ease;
}

/* Game Container */
#game-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--spacing-sm);
}

/* Progress Header */
.progress-header {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--accent-color);
    margin-bottom: var(--spacing-md);
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--secondary-bg);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.progress-fill {
    height: 100%;
    background: var(--accent-color);
    width: 0%;
    transition: width 0.5s ease;
}

.chapter-info {
    display: flex;
    align-items: center;
    font-size: var(--font-size-small);
    color: var(--text-secondary);
    font-family: var(--font-secondary);
}

.separator {
    margin: 0 var(--spacing-xs);
    opacity: 0.5;
}

/* Story Container */
.story-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.story-display {
    background: var(--secondary-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-color) 0 4px 20px;
    transition: all var(--transition-speed) ease;
}

.scene-header {
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.scene-title {
    font-size: var(--font-size-large);
    color: var(--accent-color);
    margin-bottom: var(--spacing-xs);
}

.scene-timestamp {
    font-size: var(--font-size-small);
    color: var(--text-secondary);
    font-family: var(--font-secondary);
    font-style: italic;
}

/* Dialogue Area */
.dialogue-area {
    min-height: 200px;
}

.speaker-name {
    font-weight: bold;
    color: var(--accent-color);
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: var(--font-size-small);
}

.dialogue-content {
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    text-align: justify;
}

.dialogue-content p {
    margin-bottom: var(--spacing-sm);
}

.dialogue-content p:last-child {
    margin-bottom: 0;
}

/* Choice Interface */
.choice-interface {
    margin-top: var(--spacing-md);
}

.choices-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.auto-progress {
    width: 100%;
    height: 4px;
    background: var(--secondary-bg);
    border-radius: 2px;
    overflow: hidden;
    margin-top: var(--spacing-sm);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.auto-progress.visible {
    opacity: 1;
    transform: translateY(0);
}

.auto-progress-fill {
    width: 0%;
    height: 100%;
    background: var(--accent-color);
    transition: width 0.3s linear;
}

.choice-btn {
    background: var(--secondary-bg);
    border: 2px solid var(--accent-color);
    color: var(--text-color);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    text-align: left;
}

.choice-btn:hover {
    background: var(--accent-color);
    color: var(--primary-bg);
    transform: translateY(-2px);
    box-shadow: var(--shadow-color) 0 6px 20px;
}

.choice-btn:active {
    transform: translateY(0);
}

.choice-btn.continue-btn {
    background: var(--accent-color);
    color: var(--primary-bg);
    border-color: var(--accent-color);
    text-align: center;
    font-weight: bold;
}

.choice-btn.continue-btn:hover {
    background: var(--text-color);
    border-color: var(--text-color);
}

/* Navigation Controls */
.navigation-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
    margin-top: var(--spacing-lg);
    border-top: 1px solid var(--accent-color);
}

.nav-btn {
    background: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-family: var(--font-secondary);
    font-size: var(--font-size-small);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.nav-btn:hover {
    background: var(--accent-color);
    color: var(--primary-bg);
}

.nav-icon {
    font-size: 1rem;
}

/* Menu Overlay */
.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: var(--z-menu);
}

.menu-overlay.active {
    display: flex;
}

.menu-content {
    background: var(--primary-bg);
    border: 2px solid var(--accent-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    max-width: 400px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.menu-content h3 {
    color: var(--accent-color);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.menu-section {
    margin-bottom: var(--spacing-md);
}

.menu-section h4 {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-base);
}

.chapter-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.chapter-item {
    background: var(--secondary-bg);
    border: 1px solid var(--accent-color);
    color: var(--text-color);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    font-size: var(--font-size-small);
}

.chapter-item:hover {
    background: var(--accent-color);
    color: var(--primary-bg);
}

.chapter-item.completed {
    opacity: 0.7;
}

.chapter-item.current {
    border-color: var(--text-color);
    font-weight: bold;
}

.setting-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
    cursor: pointer;
}

.close-menu-btn {
    background: var(--accent-color);
    border: none;
    color: var(--primary-bg);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-family: var(--font-secondary);
    cursor: pointer;
    width: 100%;
    margin-top: var(--spacing-md);
    transition: all var(--transition-speed) ease;
}

.close-menu-btn:hover {
    background: var(--text-color);
}

/* Menu navigation buttons */
.menu-nav-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--secondary-bg);
    border: 1px solid var(--accent-color);
    color: var(--text-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-family: var(--font-secondary);
    font-size: var(--font-size-small);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    width: 100%;
    margin-bottom: var(--spacing-xs);
}

.menu-nav-btn:hover {
    background: var(--accent-color);
    color: var(--primary-bg);
    transform: translateX(2px);
}

.menu-nav-btn .nav-icon {
    font-size: 1rem;
}

/* Transition Overlay for Time/Location Display */
.transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: var(--z-menu);
    backdrop-filter: blur(10px);
}

.transition-overlay.active {
    display: flex;
    animation: transitionOverlayFadeIn 0.8s ease-out;
}

.transition-overlay.fade-out {
    animation: transitionOverlayFadeOut 0.8s ease-in;
}

.transition-content {
    text-align: center;
    color: var(--accent-color);
    font-family: var(--font-secondary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.transition-time {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 0 20px var(--accent-color);
    animation: timeGlow 2s ease-in-out infinite alternate;
}

.transition-location {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    opacity: 0.9;
    font-weight: 300;
}

.transition-date {
    font-size: 1rem;
    opacity: 0.7;
    font-weight: 300;
}

@keyframes transitionOverlayFadeIn {
    0% { 
        opacity: 0; 
        backdrop-filter: blur(0px);
    }
    100% { 
        opacity: 1; 
        backdrop-filter: blur(10px);
    }
}

@keyframes transitionOverlayFadeOut {
    0% { 
        opacity: 1; 
        backdrop-filter: blur(10px);
    }
    100% { 
        opacity: 0; 
        backdrop-filter: blur(0px);
    }
}

@keyframes timeGlow {
    0% { 
        text-shadow: 0 0 20px var(--accent-color);
        transform: scale(1);
    }
    100% { 
        text-shadow: 0 0 30px var(--accent-color), 0 0 40px var(--accent-color);
        transform: scale(1.02);
    }
}

/* Time-specific overlay styling */
.transition-overlay.night-time {
    background: radial-gradient(circle at center, rgba(10, 10, 26, 0.95) 0%, rgba(0, 0, 0, 0.98) 100%);
}

.transition-overlay.morning-time {
    background: linear-gradient(135deg, rgba(45, 45, 53, 0.95) 0%, rgba(20, 20, 20, 0.98) 100%);
}

.transition-overlay.evening-time {
    background: linear-gradient(225deg, rgba(30, 30, 46, 0.95) 0%, rgba(10, 10, 10, 0.98) 100%);
}

.transition-overlay.hospital-time {
    background: linear-gradient(180deg, rgba(240, 240, 240, 0.95) 0%, rgba(200, 200, 200, 0.98) 100%);
}

.transition-overlay.hospital-time .transition-content {
    color: #333;
}

.transition-overlay.hospital-time .transition-time {
    text-shadow: 0 0 20px rgba(255, 71, 87, 0.8);
}

/* Special effects for different locations */
.transition-content.morgue {
    filter: contrast(1.2) brightness(0.9);
}

.transition-content.bedroom {
    filter: sepia(0.1) saturate(0.8);
}

.transition-content.cemetery {
    filter: grayscale(0.3) contrast(1.1);
}

.transition-content.prison {
    filter: desaturate(0.5) contrast(1.3);
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-loading);
    transition: opacity 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-content {
    text-align: center;
}

.loading-content h1 {
    color: var(--accent-color);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--secondary-bg);
    border-top: 3px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Animations */
.typewriter {
    overflow: hidden;
    white-space: nowrap;
    animation: typewriter 2s steps(40, end);
}

@keyframes typewriter {
    from { width: 0; }
    to { width: 100%; }
}

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

/* Content transition effects for theme changes */
.content-fade-out {
    animation: contentFadeOut 0.8s ease-out forwards;
}

.content-fade-in {
    animation: contentFadeIn 1.2s ease-in forwards;
}

@keyframes contentFadeOut {
    0% { 
        opacity: 1; 
        transform: translateY(0px) scale(1);
        filter: blur(0px);
    }
    50% { 
        opacity: 0.3; 
        transform: translateY(-10px) scale(0.98);
        filter: blur(1px);
    }
    100% { 
        opacity: 0; 
        transform: translateY(-20px) scale(0.95);
        filter: blur(2px);
    }
}

@keyframes contentFadeIn {
    0% { 
        opacity: 0; 
        transform: translateY(20px) scale(0.95);
        filter: blur(2px);
    }
    30% { 
        opacity: 0.3; 
        transform: translateY(10px) scale(0.98);
        filter: blur(1px);
    }
    100% { 
        opacity: 1; 
        transform: translateY(0px) scale(1);
        filter: blur(0px);
    }
}

.flicker {
    animation: flicker 0.5s ease-in-out infinite alternate;
}

@keyframes flicker {
    0% { opacity: 1; }
    100% { opacity: 0.7; }
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --font-size-base: 1rem;
        --font-size-large: 1.2rem;
        --spacing-sm: 0.75rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
    }
    
    #game-container {
        padding: var(--spacing-xs);
    }
    
    .story-display {
        padding: var(--spacing-md);
    }
    
    .navigation-controls {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }
    
    .nav-btn {
        flex: 1;
        min-width: 80px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .choice-btn {
        padding: var(--spacing-sm);
        font-size: var(--font-size-small);
    }
    
    .menu-content {
        padding: var(--spacing-md);
    }
    
    .loading-content h1 {
        font-size: 2rem;
    }
}