* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #0b0f19;
    color: #e2e8f0;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    min-height: 100vh;
}

.game-container {
    display: flex;
    background: #111827;
    border: 2px solid #1e293b;
    border-radius: 12px;
    padding: 20px;
    max-width: 1000px;
    width: 100%;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    position: relative;
}

.sidebar {
    width: 300px;
    padding-right: 20px;
    border-right: 1px solid #1e293b;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.logo-section h1 {
    color: #38bdf8;
    font-size: 24px;
}

.subtitle {
    font-size: 10px;
    color: #64748b;
    letter-spacing: 1px;
}

.difficulty-modes {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.mode-btn {
    background: #1e293b;
    border: 1px solid #334155;
    color: #94a3b8;
    padding: 12px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s;
}

.mode-btn.active, .mode-btn:hover {
    background: #0284c7;
    color: white;
    border-color: #38bdf8;
}

.stats-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.stat-box {
    background: #1f2937;
    padding: 10px;
    border-radius: 6px;
    border-left: 4px solid #38bdf8;
}

.stat-label {
    display: block;
    font-size: 10px;
    color: #94a3b8;
}

.stat-value {
    font-size: 20px;
    font-weight: bold;
    color: #38bdf8;
}

#reset-btn {
    background: #ef4444;
    color: white;
    border: none;
    padding: 12px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
}

.main-content {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    padding-left: 20px;
}

/* Win / Lose Screen Style */
#game-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(11, 15, 25, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 12px;
    z-index: 10;
}

.overlay-content {
    text-align: center;
    background: #1f2937;
    padding: 30px;
    border-radius: 8px;
    border: 2px solid #38bdf8;
}

#overlay-title {
    font-size: 28px;
    color: #4ade80;
    margin-bottom: 10px;
}

#overlay-action-btn {
    margin-top: 15px;
    background: #38bdf8;
    border: none;
    padding: 10px 20px;
    color: #111827;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
}

.hidden {
    display: none !important;
}

/* Instructions Box */
.instructions-container {
    margin-top: 20px;
    background: #111827;
    border: 1px solid #1e293b;
    padding: 15px 25px;
    border-radius: 8px;
    max-width: 1000px;
    width: 100%;
}

.instructions-container h3 {
    color: #38bdf8;
    margin-bottom: 8px;
}

.instructions-container ul {
    padding-left: 20px;
    color: #94a3b8;
    font-size: 14px;
    line-height: 1.6;
}