/* ============================================
   E-MOJI-FIED - NEON THEME STYLESHEET
   ============================================ */

/* ============================================
   CSS RESET & BASE STYLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Neon Color Palette */
    --neon-pink: #ff006e;
    --neon-cyan: #00f5ff;
    --neon-purple: #8b00ff;
    --neon-green: #39ff14;
    --neon-yellow: #ffff00;
    --neon-orange: #ff6600;
    
    /* Background Colors */
    --bg-dark: #0a0a0f;
    --bg-card: #1a1a2e;
    --bg-input: #16213e;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b8b8d1;
    --text-dim: #7575a3;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Shadows */
    --shadow-neon-pink: 0 0 20px var(--neon-pink), 0 0 40px var(--neon-pink);
    --shadow-neon-cyan: 0 0 20px var(--neon-cyan), 0 0 40px var(--neon-cyan);
    --shadow-neon-purple: 0 0 20px var(--neon-purple), 0 0 40px var(--neon-purple);
    --shadow-neon-green: 0 0 20px var(--neon-green), 0 0 40px var(--neon-green);
}

html {
    font-size: 16px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-md);
    overflow-x: hidden;
}

/* ============================================
   GAME CONTAINER
   ============================================ */

.game-container {
    width: 100%;
    max-width: 800px;
    position: relative;
}

/* ============================================
   SCREEN MANAGEMENT
   ============================================ */

.screen {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.screen.active {
    display: block;
    opacity: 1;
    animation: fadeIn 0.5s ease;
}

/* ============================================
   START SCREEN
   ============================================ */

#start-screen {
    text-align: center;
}

.logo-container {
    margin-bottom: var(--spacing-xl);
}

.neon-title {
    font-size: 4rem;
    font-weight: 900;
    letter-spacing: 0.2em;
    color: var(--neon-cyan);
    text-shadow: var(--shadow-neon-cyan);
    margin-bottom: var(--spacing-sm);
    animation: neonPulse 2s ease-in-out infinite;
}

.tagline {
    font-size: 1.5rem;
    color: var(--text-secondary);
    letter-spacing: 0.1em;
}

.difficulty-selection {
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px solid var(--neon-purple);
    box-shadow: var(--shadow-neon-purple);
}

.difficulty-selection h2 {
    color: var(--neon-pink);
    margin-bottom: var(--spacing-md);
    font-size: 1.8rem;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 700;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    overflow: hidden;
}

.btn:hover {
    transform: translateY(-2px);
}

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

.btn-neon {
    background: transparent;
    border: 3px solid currentColor;
    color: var(--neon-cyan);
    text-shadow: 0 0 10px currentColor;
    box-shadow: 0 0 20px currentColor, inset 0 0 20px transparent;
    display: block;
    width: 100%;
    margin: var(--spacing-sm) 0;
}

.btn-neon:hover {
    background: currentColor;
    color: var(--bg-dark);
    box-shadow: 0 0 30px currentColor, inset 0 0 30px rgba(255, 255, 255, 0.2);
}

.btn-easy {
    color: var(--neon-green);
}

.btn-hard {
    color: var(--neon-orange);
}

.btn-icon {
    font-size: 1.5rem;
    margin-right: var(--spacing-xs);
}

.btn-hint {
    font-size: 0.7rem;
    display: block;
    opacity: 0.7;
    text-transform: none;
}

.btn-submit {
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    color: var(--text-primary);
    box-shadow: var(--shadow-neon-pink);
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
}

.btn-submit:hover {
    box-shadow: 0 0 40px var(--neon-pink), 0 0 60px var(--neon-pink);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 2px solid var(--text-dim);
    margin-top: var(--spacing-sm);
}

.btn-secondary:hover {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
}

/* ============================================
   GAME SCREEN
   ============================================ */

#game-screen {
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    border: 2px solid var(--neon-purple);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

/* Header Stats */
.game-header {
    display: flex;
    justify-content: space-around;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.stat-box {
    background: var(--bg-dark);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    text-align: center;
    flex: 1;
    border: 2px solid var(--neon-cyan);
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.25rem;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 900;
    color: var(--neon-cyan);
    text-shadow: var(--shadow-neon-cyan);
}

/* ============================================
   EMOJI DISPLAY
   ============================================ */

.emoji-container {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.category-badge {
    display: inline-block;
    background: var(--neon-purple);
    color: var(--bg-dark);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
}

.emoji-display {
    background: var(--bg-dark);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 3px solid var(--neon-pink);
    box-shadow: var(--shadow-neon-pink);
    min-height: 150px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.emoji-display .emoji {
    font-size: 4rem;
    animation: emojiFloat 3s ease-in-out infinite;
    transition: transform 0.3s ease;
}

.emoji-display .emoji:hover {
    transform: scale(1.2) rotate(10deg);
}

/* ============================================
   INPUT SECTION
   ============================================ */

.input-section {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.answer-input {
    flex: 1;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    background: var(--bg-input);
    border: 2px solid var(--neon-cyan);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    outline: none;
    transition: all 0.3s ease;
}

.answer-input:focus {
    border-color: var(--neon-pink);
    box-shadow: 0 0 20px var(--neon-pink);
}

.answer-input::placeholder {
    color: var(--text-dim);
}

/* ============================================
   FEEDBACK AREA
   ============================================ */

.feedback-area {
    min-height: 60px;
    margin-bottom: var(--spacing-md);
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
}

.feedback-message {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: 700;
    animation: fadeInScale 0.3s ease;
}

.feedback-success {
    background: var(--neon-green);
    color: var(--bg-dark);
    box-shadow: 0 0 20px var(--neon-green);
}

.feedback-error {
    background: var(--neon-orange);
    color: var(--bg-dark);
    box-shadow: 0 0 20px var(--neon-orange);
}

.feedback-hint {
    background: var(--neon-yellow);
    color: var(--bg-dark);
    box-shadow: 0 0 20px var(--neon-yellow);
}

/* ============================================
   ACTION BUTTONS
   ============================================ */

.action-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.action-buttons .btn {
    flex: 1;
    padding: 0.8rem;
    font-size: 0.95rem;
}

.hint-cost {
    font-size: 0.75rem;
    opacity: 0.8;
}

/* ============================================
   ATTEMPTS DISPLAY
   ============================================ */

.attempts-container {
    text-align: center;
    padding: var(--spacing-sm);
    background: var(--bg-dark);
    border-radius: var(--radius-md);
}

.attempts-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-right: var(--spacing-xs);
}

.hearts {
    display: inline-block;
}

.heart {
    font-size: 1.5rem;
    margin: 0 0.2rem;
    display: inline-block;
    animation: heartBeat 1.5s ease-in-out infinite;
}

.heart.lost {
    opacity: 0.2;
    filter: grayscale(100%);
}

/* ============================================
   GAME OVER SCREEN
   ============================================ */

#game-over-screen {
    text-align: center;
    background: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 3px solid var(--neon-pink);
    box-shadow: var(--shadow-neon-pink);
}

.game-over-content h2 {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.final-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-display {
    background: var(--bg-dark);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 2px solid var(--neon-cyan);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.stat-icon {
    font-size: 3rem;
}

.stat-big {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--neon-cyan);
    text-shadow: var(--shadow-neon-cyan);
    line-height: 1;
}

.high-score-display {
    background: linear-gradient(135deg, var(--neon-purple), var(--neon-pink));
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 0 30px var(--neon-purple);
}

.btn-restart {
    color: var(--neon-green);
}

/* ============================================
   CONFETTI CANVAS
   ============================================ */

#confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .neon-title {
        font-size: 2.5rem;
    }
    
    .tagline {
        font-size: 1.2rem;
    }
    
    .emoji-display .emoji {
        font-size: 3rem;
    }
    
    .game-header {
        flex-direction: column;
    }
    
    .input-section {
        flex-direction: column;
    }
    
    .btn-submit {
        width: 100%;
    }
    
    .final-stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .neon-title {
        font-size: 2rem;
        letter-spacing: 0.1em;
    }
    
    .emoji-display .emoji {
        font-size: 2.5rem;
    }
}