:root {
    --bg-color: #0f172a;
    --panel-bg: rgba(30, 41, 59, 0.7);
    --panel-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --success-color: #10b981;
    --error-color: #ef4444;
    --slot-bg: rgba(15, 23, 42, 0.5);
    --font-main: 'Outfit', sans-serif;
}

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

body {
    font-family: var(--font-main);
    background: radial-gradient(circle at 50% 50%, #1e1b4b, var(--bg-color));
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.game-container {
    display: flex;
    width: 100vw;
    max-width: 100%;
    height: 100vh;
    gap: 0;
}

.glass {
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--panel-border);
    border-radius: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.slots-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    border-right: 1px solid var(--panel-border);
    padding: 20px;
    overflow: hidden;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 5px;
}

.panel-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

.progress {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--accent-color);
}

.words-container {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 25px;
    padding-right: 10px;
}

/* Custom Scrollbar for words-container */
.words-container::-webkit-scrollbar {
    width: 8px;
}
.words-container::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}
.words-container::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.word-group {
    margin-bottom: 25px;
}

.word-group h3 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 10px;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.word-group:first-child h3 {
    margin-top: 0;
}

.word-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.word-slot-container {
    display: flex;
    gap: 4px;
}

.letter-box {
    width: 32px;
    height: 32px;
    background: var(--slot-bg);
    border: 1px solid var(--panel-border);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    text-transform: uppercase;
    transition: all 0.3s ease;
}

.letter-box.found {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-hover);
    animation: popIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.letter-box.missed {
    color: var(--error-color);
    border-color: rgba(239, 68, 68, 0.3);
}

.bonus-words-container {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--panel-border);
    display: none;
}

.bonus-words-container h3 {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.bonus-box {
    background: var(--secondary-color) !important;
    border-color: var(--secondary-color) !important;
}

.play-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    position: relative;
}

.game-header {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 10px;
    padding: 10px;
    box-sizing: border-box;
}

.timer {
    font-size: 2rem;
    font-weight: 800;
    color: white;
    background: rgba(0, 0, 0, 0.3);
    padding: 10px 20px;
    border-radius: 12px;
    border: 1px solid var(--panel-border);
}
.timer.danger {
    color: var(--error-color);
    animation: pulse 1s infinite;
}

.input-display {
    display: flex;
    gap: 10px;
    margin-bottom: 40px;
    min-height: 60px;
}

.input-letter {
    width: 50px;
    height: 60px;
    background: var(--slot-bg);
    border: 2px solid var(--panel-border);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    font-weight: 800;
    text-transform: uppercase;
    color: white;
    cursor: pointer;
    transition: all 0.2s;
}

.input-letter:hover {
    border-color: var(--error-color);
    color: var(--error-color);
}

.letters-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
}

.letter-btn {
    width: 65px;
    height: 75px;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.02));
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    font-family: inherit;
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
    text-transform: uppercase;
    cursor: pointer;
    box-shadow: 0 8px 16px rgba(0,0,0,0.3);
    transition: all 0.15s ease;
}

.letter-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px rgba(0,0,0,0.4);
    background: linear-gradient(135deg, rgba(255,255,255,0.2), rgba(255,255,255,0.05));
    border-color: var(--accent-color);
}

.letter-btn:active {
    transform: translateY(2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.letter-btn.used {
    opacity: 0.2;
    pointer-events: none;
    transform: scale(0.9);
}

.controls {
    display: flex;
    gap: 15px;
}

.btn {
    padding: 12px 24px;
    border-radius: 12px;
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: var(--accent-color);
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}
.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}
.btn-primary:active {
    transform: translateY(1px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid var(--panel-border);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

.message {
    margin-top: 20px;
    min-height: 24px;
    font-weight: 600;
    letter-spacing: 1px;
}

.message.success { color: var(--success-color); }
.message.error { color: var(--error-color); }

.modal {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal.active {
    opacity: 1;
    pointer-events: all;
}

.pause-modal {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(15px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    visibility: hidden;
    opacity: 0;
    transition: all 0.3s ease;
}

.pause-modal.active {
    visibility: visible;
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    padding: 40px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 400px;
    width: 90%;
}

.modal-content h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.hidden {
    display: none !important;
}

.starburst {
    background: radial-gradient(circle, #fbbf24 0%, #f59e0b 50%, transparent 70%);
    color: #451a03;
    padding: 40px;
    border-radius: 50%;
    margin: -20px auto 20px;
    animation: scaleRotate 1.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    transform: scale(0);
}

.starburst h2 {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 5px;
    text-shadow: 2px 2px 0px rgba(255,255,255,0.5);
}

.starburst p {
    font-size: 1.2rem;
    font-weight: 800;
}

.stats-display {
    position: absolute;
    bottom: 20px;
    right: 20px;
    display: flex;
    gap: 15px;
    background: rgba(0, 0, 0, 0.4);
    padding: 10px 20px;
    border-radius: 12px;
    border: 1px solid var(--panel-border);
}

.stat {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-color);
}

/* Animations */
@keyframes popIn {
    0% { transform: scale(0.8); opacity: 0; }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes scaleRotate {
    0% { transform: scale(0) rotate(-45deg); opacity: 0; }
    50% { transform: scale(1.1) rotate(10deg); opacity: 1; }
    100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.shake {
    animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* Responsive */
@media (max-width: 768px) {
    .game-container {
        flex-direction: column-reverse;
        height: 100dvh;
        width: 100vw;
        border-radius: 0;
        gap: 0;
    }
    
    .slots-panel {
        flex: 1;
        max-width: none;
        border-radius: 20px 20px 0 0;
        border-bottom: none;
        border-right: none;
    }

    .play-panel {
        flex: 0 0 auto;
        height: auto;
        padding-top: 15px;
        padding-bottom: 10px;
        justify-content: flex-start;
        z-index: 10;
    }
    
    .game-header {
        margin-bottom: 5px;
        padding: 0;
    }
    
    .timer {
        font-size: 1.4rem;
        padding: 2px 10px;
    }
    
    .input-display {
        margin-bottom: 10px;
        min-height: 44px;
    }
    
    .input-letter {
        width: 36px;
        height: 44px;
        font-size: 1.3rem;
    }

    .letters-container {
        gap: 6px;
        margin-bottom: 10px;
    }

    .letter-btn {
        width: 38px;
        height: 46px;
        font-size: 1.2rem;
        border-radius: 8px;
    }
    
    .controls {
        gap: 6px;
    }
    
    .btn {
        padding: 8px 4px !important;
        font-size: 0.85rem;
    }
    
    .message {
        margin-top: 5px;
        min-height: 20px;
    }
    
    .stats-display {
        position: relative;
        bottom: auto;
        right: auto;
        width: 100%;
        margin-top: 5px;
        padding: 5px 10px;
        flex-direction: row;
        justify-content: center;
        gap: 20px;
        background: transparent;
        border: none;
    }
    .stat {
        font-size: 1.1rem;
    }
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: rgba(128, 128, 128, 0.2) !important;
    border-color: rgba(128, 128, 128, 0.5) !important;
    color: var(--text-secondary);
}