:root {
    --primary: #4e73df;
    --secondary: #858796;
    --success: #1cc88a;
    --warning: #f6c23e;
    --danger: #e74a3b;
    --dark: #5a5c69;
    --light: #f8f9fc;
    --bg-body: #f3f4f6;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-input-group: #eaecf4;
    --border-color: #e3e6f0;
    --text-main: #5a5c69;
    --text-secondary: #858796;
    --event-bg: #fff8e1;
    --event-text: #856404;
    --fee-border: #f1f3f9;
    --total-row-bg: #f8f9fc;
    --total-row-border: #eaecf4;
    --float-header-bg: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] {
    --primary: #4e73df;
    --secondary: #b7b9cc;
    --success: #1cc88a;
    --warning: #f6c23e;
    --danger: #e74a3b;
    --dark: #f8f9fc;
    --light: #5a5c69;
    --bg-body: #121212;
    --bg-card: #1e1e1e;
    --bg-input: #2d2d2d;
    --bg-input-group: #333333;
    --border-color: #404040;
    --text-main: #e0e0e0;
    --text-secondary: #b0b0b0;
    --event-bg: #3e2e08;
    --event-text: #f6c23e;
    --fee-border: #333333;
    --total-row-bg: #2d2d2d;
    --total-row-border: #404040;
    --float-header-bg: rgba(30, 30, 30, 0.95);
}

body {
    background-color: var(--bg-body);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    min-height: 100vh;
    padding: 40px 0;
    color: var(--text-main);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.main-container {
    position: relative;
    background: var(--bg-card);
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    padding: 20px;
    margin: 0 auto;
    max-width: 1200px;
    border: 1px solid rgba(0,0,0,0.02);
    transition: background-color 0.3s ease;
}

.header {
    text-align: center;
    margin-bottom: 40px;
}
.header h1 {
    color: var(--primary);
    font-weight: 800;
    margin-bottom: 10px;
}
.header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.input-section {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
}

.event-info {
    background: var(--event-bg);
    border-left: 5px solid var(--warning);
    padding: 20px;
    margin-bottom: 40px;
    border-radius: 8px;
    color: var(--event-text);
}

/* Result Cards */
.result-card {
    background: var(--bg-card);
    border: none;
    border-radius: 15px;
    padding: 0;
    margin-bottom: 25px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.result-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

/* Card Headers */
.result-card h5 {
    margin: 0;
    padding: 20px;
    font-weight: 700;
    font-size: 1.1rem;
    color: white;
    display: flex;
    align-items: center;
    gap: 10px;
}

.result-card.regular h5 {
    background: linear-gradient(135deg, #4e73df 0%, #224abe 100%);
}

.result-card.event h5 {
    background: linear-gradient(135deg, #f6c23e 0%, #e0a800 100%);
}

/* Fee Items */
.fee-item {
    display: flex;
    justify-content: space-between;
    padding: 15px 25px;
    border-bottom: 1px solid var(--fee-border);
    align-items: center;
}

.fee-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.fee-value {
    font-weight: 700;
    color: var(--text-main);
}

/* Total Row */
.fee-item.total-row {
    background: var(--total-row-bg);
    border-top: 2px solid var(--total-row-border);
    margin: 0;
    border-radius: 0;
    color: var(--primary);
    font-weight: 800;
}
.fee-item.total-row .fee-value {
    color: var(--primary);
    font-size: 1.1rem;
}

/* Profit Row */
.fee-item.profit-row {
    background: var(--success);
    margin: 0;
    border-radius: 0;
    color: white;
    border-bottom: none;
}
.fee-item.profit-row .fee-label,
.fee-item.profit-row .fee-value {
    color: white;
    font-size: 1.2rem;
}

.fee-item.profit-row.negative {
    background: var(--danger);
}

/* Form Elements */
.form-label {
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
}

.input-group-text {
    background-color: var(--bg-input-group);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-weight: 600;
}

.form-control {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    padding: 12px;
    color: var(--text-main);
}

.form-control:focus {
    background-color: var(--bg-input);
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
    color: var(--text-main);
}

/* Placeholder color for dark mode */
[data-theme="dark"] .form-control::placeholder {
    color: var(--text-secondary);
    opacity: 0.8;
}

/* Dark mode specific adjustments for table */
[data-theme="dark"] .table {
    color: var(--text-main);
    border-color: var(--border-color);
}

[data-theme="dark"] .table-light {
    background-color: var(--bg-input-group);
    color: var(--text-main);
}

[data-theme="dark"] .table-hover tbody tr:hover {
    color: var(--text-main);
    background-color: rgba(255,255,255,0.05);
}

@media (max-width: 768px) {
    body {
        padding: 20px 0;
    }
    .main-container {
        padding: 15px;
    }
    .input-section {
        padding: 20px;
    }
    .header h1 {
        font-size: 1.8rem;
    }
    
    /* Table Mobile Optimization */
    .table th, .table td {
        padding: 0.5rem 0.25rem !important;
        font-size: 0.9rem;
    }
    .table th:first-child, .table td:first-child {
        padding-left: 0.75rem !important;
    }
    .table .badge {
        display: block;
        margin-bottom: 4px;
        width: fit-content;
        font-size: 0.75rem;
    }

    #themeToggle {
        top: 0 !important;
        right: 0 !important;
        margin: 5px !important;
    }
    
    .header {
        margin-top: 25px;
        padding-top: 10px;
    }
}

/* Floating Header */
.floating-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--float-header-bg);
    backdrop-filter: blur(10px);
    padding: 10px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
    cursor: pointer;
}

.floating-header.visible {
    transform: translateY(0);
}

/* Theme Toggle Button */
#themeToggle {
    color: var(--text-secondary);
    transition: color 0.3s ease;
    padding: 8px;
    line-height: 1;
}

#themeToggle:hover {
    color: var(--primary);
}

/* Advanced Settings Section */
.advanced-settings {
    background-color: var(--light);
}

[data-theme="dark"] .advanced-settings {
    background-color: var(--bg-input-group);
}

/* Dark Mode Overrides for Bootstrap classes */
[data-theme="dark"] .text-muted {
    color: var(--text-secondary) !important;
}

[data-theme="dark"] .card {
    background-color: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="dark"] .table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--text-main);
    color: var(--text-main);
    border-color: var(--border-color);
}

[data-theme="dark"] .table-light {
    --bs-table-bg: var(--bg-input-group);
    --bs-table-color: var(--text-main);
    background-color: var(--bg-input-group) !important;
    color: var(--text-main) !important;
}