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

body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    max-width: 1400px;
    width: 100%;
    padding: 40px;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
    font-size: 2.5em;
}

h2 {
    color: #667eea;
    margin-bottom: 20px;
    text-align: center;
}

h3 {
    color: #555;
    margin-bottom: 15px;
    font-size: 1.1em;
}

.section h3 {
    text-align: center;
}

.screen {
    display: block;
}

.screen.hidden {
    display: none;
}

/* Start Screen */
#startScreen .form-group {
    text-align: center;
    margin-bottom: 20px;
}

#startScreen label {
    display: block;
    margin-bottom: 10px;
    font-size: 1.1em;
    color: #333;
}

#startScreen input {
    padding: 10px 15px;
    font-size: 1em;
    border: 2px solid #667eea;
    border-radius: 5px;
    margin-right: 10px;
    width: 100px;
}

/* Game Header */
.game-header {
    margin-bottom: 30px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
}

.info-box {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.info-box h3 {
    background: #667eea;
    color: white;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 0;
    font-size: 1em;
}

.section .info-box {
    margin-bottom: 20px;
}

.message {
    padding: 15px;
    background: #e8f5e9;
    border-left: 4px solid #4caf50;
    border-radius: 5px;
    color: #2e7d32;
    display: none;
}

.message.show {
    display: block;
}

.message.error {
    background: #ffebee;
    border-left-color: #f44336;
    color: #c62828;
}

/* Game Content */
.game-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
}

.section {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    border: 1px solid #e0e0e0;
}

.stocks-list,
.holdings-list,
.companies-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.stock-item,
.holding-item,
.company-item {
    background: white;
    padding: 12px;
    border-radius: 6px;
    border-left: 4px solid #667eea;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.holding-item {
    border-left-color: #764ba2;
}

.company-item {
    border-left-color: #2196F3;
    padding: 15px;
    gap: 20px;
}

.company-info {
    flex: 1;
}

.company-name {
    font-weight: bold;
    color: #333;
    font-size: 1.05em;
    margin-bottom: 5px;
}

.company-details {
    display: flex;
    gap: 20px;
    font-size: 0.9em;
    color: #666;
}

.company-details span {
    font-weight: 500;
}

.company-value {
    font-weight: bold;
    color: #2196F3;
    font-size: 1.1em;
    min-width: 100px;
    text-align: right;
}

.stock-item span,
.holding-item span {
    font-weight: bold;
    color: #667eea;
}

/* Form Groups */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: bold;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 1em;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
}

/* Buttons */
button {
    padding: 12px 20px;
    border: none;
    border-radius: 6px;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: bold;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

#startScreen button {
    background: #667eea;
    color: white;
}

#startScreen button:hover {
    background: #764ba2;
}

.button-group {
    display: flex;
    gap: 10px;
}

.btn-buy {
    background: #4caf50;
    color: white;
    flex: 1;
}

.btn-buy:hover {
    background: #45a049;
}

.btn-sell {
    background: #ff9800;
    color: white;
    flex: 1;
}

.btn-sell:hover {
    background: #e68900;
}

.btn-buy-all {
    background: #2196F3;
    color: white;
    flex: 1;
}

.btn-buy-all:hover {
    background: #0b7dda;
}

.btn-sell-all {
    background: #f57c00;
    color: white;
    flex: 1;
}

.btn-sell-all:hover {
    background: #e65100;
}

.btn-next-day {
    background: #667eea;
    color: white;
    width: 100%;
    padding: 15px;
    font-size: 1.1em;
}

.btn-next-day:hover {
    background: #764ba2;
}

/* Charts Container */
.charts-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 30px;
}

.chart-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    border: 1px solid #e0e0e0;
    min-height: 400px;
    position: relative;
}

.chart-item canvas {
    max-height: 400px;
}

/* End Screen */
.end-stats {
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
}

.end-stats p {
    font-size: 1.1em;
    margin: 10px 0;
    color: #333;
}

.end-stats .profit {
    font-size: 1.3em;
    font-weight: bold;
    color: #4caf50;
    margin-top: 20px;
}

#finalHoldings {
    text-align: left;
    margin: 20px 0;
    padding: 15px;
    background: white;
    border-radius: 6px;
}

.holding-final {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #e0e0e0;
}

.holding-final:last-child {
    border-bottom: none;
}

#endScreen button {
    background: #667eea;
    color: white;
    margin-top: 20px;
    padding: 12px 30px;
}

#endScreen button:hover {
    background: #764ba2;
}

.btn-leaderboard {
    background: #9c27b0;
    color: white;
    width: 100%;
    margin-top: 10px;
}

.btn-leaderboard:hover {
    background: #7b1fa2;
}

.btn-save-score {
    background: #667eea;
    color: white;
    width: 100%;
}

.btn-save-score:hover {
    background: #764ba2;
}

.btn-back {
    background: #667eea;
    color: white;
    width: 100%;
    margin-top: 20px;
    padding: 12px;
}

.btn-back:hover {
    background: #764ba2;
}

/* Leaderboard Screen */
.leaderboard-container {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    min-height: 300px;
}

.leaderboard-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.leaderboard-entry {
    background: white;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.leaderboard-entry.rank-1 {
    border-left-color: #ffd700;
    background: #fffbf0;
}

.leaderboard-entry.rank-2 {
    border-left-color: #c0c0c0;
    background: #f5f5f5;
}

.leaderboard-entry.rank-3 {
    border-left-color: #cd7f32;
    background: #f9f5f0;
}

.leaderboard-rank {
    font-size: 1.5em;
    font-weight: bold;
    color: #667eea;
    min-width: 40px;
    text-align: center;
}

.leaderboard-info {
    flex: 1;
    margin: 0 15px;
}

.leaderboard-name {
    font-weight: bold;
    color: #333;
    font-size: 1.1em;
}

.leaderboard-stats {
    font-size: 0.9em;
    color: #666;
    margin-top: 5px;
}

.leaderboard-profit {
    font-size: 1.2em;
    font-weight: bold;
    min-width: 120px;
    text-align: right;
}

.leaderboard-profit.positive {
    color: #4caf50;
}

.leaderboard-profit.negative {
    color: #f44336;
}

.empty-message {
    text-align: center;
    padding: 40px 20px;
    color: #999;
    font-size: 1.1em;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 20px;
    }

    .game-content {
        grid-template-columns: 1fr;
    }

    .info-box {
        grid-template-columns: 1fr;
    }

    .charts-container {
        grid-template-columns: 1fr;
    }

    .chart-item {
        min-height: 250px;
    }

    h1 {
        font-size: 1.8em;
    }
}