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

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --success-color: #059669;
    --success-hover: #047857;
    --background-color: #f8fafc;
    --card-background: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

body {
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    padding: 2rem 1rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

h1 {
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 2rem;
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--success-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: var(--shadow-sm);
}

.calculator-form {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
    transition: transform 0.3s ease;
}

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

.input-group {
    margin-bottom: 1.5rem;
}

label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

input, select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: var(--background-color);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

button {
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-width: 120px;
}

button:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
}

#downloadBtn {
    background-color: var(--success-color);
}

#downloadBtn:hover {
    background-color: var(--success-hover);
}

.results-container {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.5s ease-out;
}

.summary {
    margin-bottom: 1.5rem;
    padding: 1.5rem;
    background-color: var(--background-color);
    border-radius: 0.75rem;
    font-size: 1.1rem;
    border: 1px solid var(--border-color);
}

.summary p {
    margin-bottom: 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.summary p:last-child {
    margin-bottom: 0;
}

.table-container {
    overflow-x: auto;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    background-color: var(--card-background);
}

th {
    background-color: var(--background-color);
    font-weight: 600;
    color: var(--text-primary);
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

th .icon {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

tr {
    transition: background-color 0.2s ease;
}

tr:hover {
    background-color: var(--background-color);
}

td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

/* New styles for multiple games */
.day-container {
    background: var(--background-color);
    padding: 1.5rem;
    border-radius: 0.75rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.day-container:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.day-container h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.day-container h3::before {
    content: '📅';
    font-size: 1.1rem;
}

.daily-games-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.games-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.game-input {
    display: flex;
    gap: 10px;
    align-items: center;
}

.game-input input {
    flex: 1;
}

.add-game-btn {
    background-color: #2ecc71;
    padding: 8px 16px;
    font-size: 14px;
}

.add-game-btn:hover {
    background-color: #27ae60;
}

.remove-game-btn {
    background-color: #e74c3c;
    color: white;
    width: 30px;
    height: 30px;
    padding: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    cursor: pointer;
}

.remove-game-btn:hover {
    background-color: #c0392b;
}

.day-odds {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: var(--card-background);
}

.day-odds:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.odds-info {
    margin-top: 0.75rem;
    padding: 1rem;
    background-color: var(--card-background);
    border-radius: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.odds-info p {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.odds-info p:last-child {
    margin-bottom: 0;
}

.odds-info p::before {
    content: '💡';
    font-size: 1.1rem;
}

/* Profit highlighting */
td:last-child {
    font-weight: 600;
}

td:last-child:not(:empty) {
    color: var(--success-color);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 1rem 0.5rem;
    }

    .container {
        padding: 0 0.5rem;
    }

    h1 {
        font-size: 2rem;
        margin-bottom: 1.5rem;
    }

    .calculator-form {
        padding: 1.5rem;
    }

    .input-group {
        margin-bottom: 1rem;
    }

    input, select, button {
        font-size: 0.95rem;
        padding: 0.7rem 0.9rem;
    }

    .summary {
        font-size: 1rem;
        padding: 1rem;
    }

    .day-container {
        padding: 1rem;
    }

    .day-container h3 {
        font-size: 1.1rem;
    }

    .odds-info {
        font-size: 0.85rem;
        padding: 0.75rem;
    }

    th, td {
        padding: 0.75rem;
        font-size: 0.9rem;
    }

    .game-input {
        flex-direction: column;
        gap: 5px;
    }

    .remove-game-btn {
        width: 100%;
        border-radius: 6px;
        height: auto;
        padding: 8px;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #0f172a;
        --card-background: #1e293b;
        --text-primary: #f1f5f9;
        --text-secondary: #94a3b8;
        --border-color: #334155;
    }

    input, select {
        background-color: #1e293b;
        color: var(--text-primary);
    }

    .day-odds {
        background-color: #1e293b;
        color: var(--text-primary);
    }

    tr:hover {
        background-color: #334155;
    }
}

/* Icon styles */
.icon {
    display: inline-block;
    vertical-align: middle;
    margin-right: 0.5rem;
    color: var(--primary-color);
}

button .icon {
    margin-right: 0.5rem;
    color: white;
}

.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}