:root {
    /* Base Palette */
    --bg-deep:       #0d0f1a;
    --bg-panel:      #13162a;
    --bg-card:       #1c2040;
    --bg-input:      #1c2040;
    --border-color:  #3a426b;
    --gold:          #f0c040;
    --gold-dark:     #c4952a;
    --teal:          #2ecdaa;
    --teal-dark:     #1a9e83;
    --violet:        #cca6ff;
    --violet-dark:   #6e40cc; 
    --crimson:       #ff8fa3;
    --crimson-dark:  #b02d40; 
    --gold-glow:     #f0c04055;
    --teal-glow:     #2ecdaa44;
    --violet-glow:   #9b6aff44;
    --crimson-glow:  #e8455a44;
    --text-primary:  #f0ece0;
    --text-muted:    #a3a8c7;
    --text-faint:    #767d9e;
    --shadow-card:   0 8px 32px rgba(0,0,0,.4);
    --transition-fast: .15s ease;
    --transition-med:  .3s ease;
    --max-width:       1000px;
    
    --bg-pattern: radial-gradient(circle at 20% 20%, #1a1f4030 0%, transparent 50%),
                  radial-gradient(circle at 80% 80%, #2a1f3a30 0%, transparent 50%);

    /* Functional mappings */
    --primary: var(--bg-panel);
    --accent: var(--gold);
    --secondary: var(--violet);
    --success: var(--teal);
    --danger: var(--crimson);
    --warning: var(--gold);
    
    --border-radius: 12px;
    
    /* System Font Stack */
    --font-stack: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", Arial, sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: var(--font-stack);
}

body {
    background-color: var(--bg-deep);
    background-image: var(--bg-pattern);
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 10px;
}

.game-container {
    background-color: var(--bg-panel);
    width: 100%;
    max-width: var(--max-width);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    gap: 20px;
    border: 1px solid var(--border-color);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

h1 {
    color: var(--accent);
    letter-spacing: 4px;
    font-size: 1.8rem;
    font-weight: 900;
}

.stats {
    display: flex;
    gap: 25px;
    align-items: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.label {
    font-size: 0.65rem;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 2px;
}

#score {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--gold);
    transition: all 0.3s;
}

/* Pulsing animation for game end */
.pulse {
    animation: pulse-animation 1s infinite;
}

@keyframes pulse-animation {
    0% { transform: scale(1); text-shadow: 0 0 0px var(--gold); }
    50% { transform: scale(1.2); text-shadow: 0 0 15px var(--gold-glow); }
    100% { transform: scale(1); text-shadow: 0 0 0px var(--gold); }
}

.timer-bar-container {
    width: 100px;
    height: 20px;
    background-color: var(--bg-deep);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

#timer-bar {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: var(--crimson-dark);
    transition: width 1s linear;
}

#timer-text {
    position: relative;
    z-index: 2;
    font-size: 0.75rem;
    font-weight: 900;
    color: var(--text-primary);
    text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}

main {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 20px;
    min-height: 350px;
}

.word-grid {
    display: flex;
    flex-direction: row;
    gap: 8px;
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 10px;
    width: 100%;
    scrollbar-width: none; /* Firefox */
}

.word-grid::-webkit-scrollbar {
    display: none; /* Safari/Chrome */
}

.word-section {
    display: flex;
    flex-direction: column;
    flex: 1; /* All columns take equal space */
    min-width: 0; /* Allow shrinking */
}

.column-header {
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 10px;
    padding-bottom: 5px;
    border-bottom: 1px solid var(--border-color);
}

.word-slots-grid {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.word-slot {
    background-color: var(--bg-card);
    border-radius: 4px;
    height: 32px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 900;
    font-size: 1rem;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    white-space: nowrap;
    width: 100%;
    letter-spacing: 1px;
    position: relative;
    text-transform: uppercase;
}

.word-slot.empty {
    color: var(--text-faint);
    opacity: 0.3;
    font-weight: 400;
}

.word-slot.revealed {
    background-color: var(--bg-card); /* Keep same background as empty slots */
    color: var(--teal); /* Teal-like success color as requested */
    border: 1px solid var(--border-color);
    box-shadow: none;
    transform: none;
    z-index: 1;
    text-shadow: none;
    opacity: 1;
    animation: reveal-pop 0.3s ease-out;
}

@keyframes reveal-pop {
    0% { transform: scale(0.95); opacity: 0.5; }
    100% { transform: scale(1); opacity: 1; }
}

.word-slot.missed {
    background-color: var(--bg-card); /* Keep same background as empty slots */
    color: var(--crimson-dark); /* Using crimson-dark (matching Sil button) as requested */
    border: 1px solid var(--border-color);
    box-shadow: none;
    opacity: 1;
}

.word-slot.joker-active {
    color: var(--teal);
    border-color: var(--teal-glow);
}

.target-counts {
    background-color: var(--bg-card);
    padding: 15px;
    border-radius: var(--border-radius);
    min-width: 150px;
    border: 1px solid var(--border-color);
}

.target-counts h3 {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    text-align: center;
}

.target-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
    font-size: 0.75rem;
    padding: 6px 10px;
    border-radius: 4px;
    background: var(--bg-deep);
    border: 1px solid var(--border-color);
}

.target-item.completed {
    background-color: var(--teal-glow);
    color: var(--teal);
    border-color: var(--teal);
}

footer {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.current-word-display {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    height: 60px;
    border-radius: var(--border-radius);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: 12px;
    color: var(--text-primary);
    position: relative;
    box-shadow: inset 0 2px 10px rgba(0,0,0,0.4);
}

.indicator {
    position: absolute;
    right: 15px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background-color: var(--bg-deep);
    transition: all 0.2s;
    border: 1px solid var(--border-color);
}

.indicator.valid { background-color: var(--teal); box-shadow: 0 0 10px var(--teal-glow); border-color: transparent; }
.indicator.invalid { background-color: var(--crimson); box-shadow: 0 0 10px var(--crimson-glow); border-color: transparent; }

.letters-container {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.letter-btn {
    width: 55px;
    height: 55px;
    background-color: var(--bg-card);
    color: var(--violet);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 1.6rem;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 5px var(--bg-deep);
    transition: all var(--transition-fast);
    display: flex;
    justify-content: center;
    align-items: center;
}

.letter-btn:active {
    box-shadow: 0 2px var(--bg-deep);
    transform: translateY(3px);
}

.letter-btn.used {
    background-color: var(--bg-deep);
    color: var(--text-faint);
    opacity: 0.3;
    border-color: transparent;
    box-shadow: none;
    pointer-events: none;
}

.controls {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.btn {
    padding: 12px 5px;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.75rem;
    cursor: pointer;
    color: white;
    transition: all 0.2s;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn.primary { background-color: var(--bg-card); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn.secondary { background-color: var(--violet-dark); }
.btn.danger { background-color: var(--crimson-dark); }
.btn.warning { background-color: var(--gold); color: var(--bg-deep); }

.btn:hover { filter: brightness(1.1); }
.btn:active { transform: scale(0.98); }

.actions {
    display: flex;
    justify-content: center;
    margin-top: 10px;
}

.btn.success { 
    background: linear-gradient(135deg, var(--teal) 0%, var(--teal-dark) 100%);
    padding: 18px 60px; 
    font-size: 1.2rem; 
    border-radius: 35px;
    box-shadow: 0 6px 20px var(--teal-glow);
    font-weight: 900;
    letter-spacing: 2px;
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    display: none; /* Hidden by default */
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: var(--bg-panel);
    padding: 40px;
    border-radius: 20px;
    border: 2px solid var(--border-color);
    box-shadow: 0 0 50px rgba(0,0,0,0.5), 0 0 20px var(--teal-glow);
    text-align: center;
    width: 90%;
    max-width: 400px;
    transform: scale(0.9);
    animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes popIn { to { transform: scale(1); } }

.modal-content h2 {
    color: var(--accent);
    margin-bottom: 25px;
    letter-spacing: 2px;
    font-size: 2rem;
}

.modal-stats {
    display: flex;
    flex-direction: column;
    margin-bottom: 30px;
    gap: 5px;
}

.modal-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
}

.modal-value {
    color: var(--gold);
    font-size: 3.5rem;
    font-weight: 900;
    text-shadow: 0 0 15px var(--gold-glow);
}

.modal-content .btn.success {
    padding: 15px 40px;
    font-size: 1.1rem;
    width: 100%;
}

/* Responsive */
@media (max-width: 650px) {
    body { padding: 5px; }
    .game-container { padding: 10px 8px; gap: 8px; }
    
    header { padding-bottom: 8px; }
    main { grid-template-columns: 1fr; gap: 6px; min-height: unset; }
    .target-counts { display: none !important; }
    
    .word-grid { 
        gap: 2px;
        padding-bottom: 5px;
    }
    
    .word-section { 
        flex: 1;
        min-width: 45px;
    }

    .column-header {
        font-size: 0.5rem;
        margin-bottom: 2px;
        letter-spacing: -0.5px;
        white-space: nowrap;
    }

    .word-slots-grid {
        gap: 2px;
    }

    .word-slot {
        height: 20px;
        font-size: 0.6rem;
        border-radius: 2px;
        letter-spacing: -0.5px;
        border-width: 0.5px;
    }

    .word-slot.empty {
        letter-spacing: 0;
    }
    
    h1 { font-size: 1.1rem; letter-spacing: 1px; }
    .stats { gap: 8px; }
    #score { font-size: 1rem; }
    
    .letters-container { 
        gap: 2px; 
        flex-wrap: nowrap; 
        justify-content: space-between;
    }
    
    .letter-btn { 
        width: calc((100% - 14px) / 8); 
        height: 38px; 
        font-size: 1rem; 
        border-radius: 6px;
        box-shadow: 0 3px var(--bg-deep);
    }
    
    .current-word-display { font-size: 1.3rem; height: 44px; letter-spacing: 6px; }
    
    .controls { gap: 4px; }
    .btn { font-size: 0.6rem; padding: 10px 2px; border-radius: 6px; }
    .btn.success { padding: 12px 30px; font-size: 1rem; border-radius: 25px; }
}