:root {
    /* Tema claro - Light Theme */
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --secondary: #4cc9f0;
    --success: #06d6a0;
    --danger: #ef476f;
    --warning: #ffd166;
    --light: #f8f9fa;
    --dark: #212529;
    --text-color: #333333;
    --text-muted: #6c757d;
    --body-bg: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
    --card-bg: #ffffff;
    --input-bg: #ffffff;
    --input-border: #e0e0e0;
    --step-card-bg: rgba(67, 97, 238, 0.05);
    --step-card-border: var(--primary);
    --input-section-bg: #ffffff;
    --results-section-bg: #ffffff;
    --alert-success-bg: rgba(6, 214, 160, 0.1);
    --donation-bg: linear-gradient(135deg, #4361ee 0%, #4cc9f0 100%);
    --donation-text: #ffffff;
    --donation-item-bg: rgba(255, 255, 255, 0.2);
    --donation-item-hover: rgba(255, 255, 255, 0.3);
    --donation-button-bg: #ffffff;
    --donation-button-color: var(--primary);
    --footer-bg: rgba(255, 255, 255, 0.5);
    --footer-text: #555555;
    --card-shadow: 0 10px 20px rgba(0, 0, 0, 0.12), 0 5px 8px rgba(0, 0, 0, 0.06);
    --input-shadow: 0 2px 5px rgba(0, 0, 0, 0.06);
}

[data-bs-theme="dark"] {
    /* Tema escuro - Dark Theme */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #38bdf8;
    --success: #10b981;
    --danger: #f43f5e;
    --warning: #fbbf24;
    --light: #1f2937;
    --dark: #f8fafc;
    --text-color: #e5e7eb;
    --text-muted: #9ca3af;
    --body-bg: linear-gradient(135deg, #111827 0%, #1e293b 100%);
    --card-bg: #1e293b;
    --input-bg: #111827;
    --input-border: #374151;
    --step-card-bg: rgba(99, 102, 241, 0.1);
    --step-card-border: var(--primary);
    --input-section-bg: #1e293b;
    --results-section-bg: #1e293b;
    --alert-success-bg: rgba(16, 185, 129, 0.1);
    --donation-bg: linear-gradient(135deg, #4f46e5 0%, #38bdf8 100%);
    --donation-text: #ffffff;
    --donation-item-bg: rgba(31, 41, 55, 0.6);
    --donation-item-hover: rgba(31, 41, 55, 0.8);
    --donation-button-bg: #111827;
    --donation-button-color: #e5e7eb;
    --footer-bg: rgba(31, 41, 55, 0.5);
    --footer-text: #9ca3af;
    --card-shadow: 0 10px 20px rgba(0, 0, 0, 0.3), 0 5px 8px rgba(0, 0, 0, 0.2);
    --input-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

/* Variáveis invariáveis (independentes do tema) */
:root {
    --card-radius: 16px;
    --btn-radius: 10px;
    --transition: all 0.3s ease;
}

body {
    background: var(--body-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 20px 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
}

.container {
    max-width: 1000px;
}

/* Theme Switcher */
.theme-switcher {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.theme-switcher button {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--card-shadow);
    background-color: var(--card-bg);
    color: var(--primary);
    border: 2px solid var(--primary);
}

.theme-switcher button:hover {
    transform: scale(1.1);
}

[data-bs-theme="light"] .sun-icon {
    display: none;
}

[data-bs-theme="dark"] .moon-icon {
    display: none;
}

.page-title {
    text-align: center;
    color: var(--text-color);
    margin-bottom: 30px;
    font-weight: 700;
}

.card {
    border: none;
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    overflow: hidden;
    background: var(--card-bg);
    margin-bottom: 25px;
}

.main-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15), 0 10px 15px rgba(0, 0, 0, 0.08);
}

.card-header {
    background: var(--primary);
    color: white;
    padding: 20px 30px;
    border-bottom: none;
}

.card-title {
    font-weight: 700;
    margin: 0;
    font-size: 1.5rem;
}

.card-body {
    padding: 25px 30px;
}

.card-subtitle {
    font-size: 1.2rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 20px;
}

.form-label {
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 8px;
}

.form-control, .form-select {
    height: 48px;
    border-radius: 12px;
    border: 1px solid var(--input-border);
    padding: 10px 15px;
    font-size: 1rem;
    box-shadow: var(--input-shadow);
    transition: var(--transition);
    background-color: var(--input-bg);
    color: var(--text-color);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.input-group-text {
    background-color: var(--primary);
    color: white;
    border: 1px solid var(--primary);
    border-radius: 12px 0 0 12px;
}

.step-card {
    border-left: 4px solid var(--step-card-border);
    background-color: var(--step-card-bg);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 25px;
}

.step-card h5 {
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.step-card ol {
    margin-bottom: 0;
    padding-left: 20px;
    color: var(--text-color);
}

.step-card li {
    margin-bottom: 8px;
    line-height: 1.5;
}

.step-card li:last-child {
    margin-bottom: 0;
}

.input-section {
    background-color: var(--input-section-bg);
    border-radius: var(--card-radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.input-section:hover {
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.1);
}

.input-section-title {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    color: var(--primary);
    font-weight: 600;
}

.input-section-title i {
    margin-right: 10px;
    font-size: 1.2rem;
}

.odds-container {
    display: flex;
    gap: 15px;
}

.odds-field {
    flex: 1;
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    border-radius: var(--btn-radius);
    padding: 12px 24px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(67, 97, 238, 0.3);
}

.btn-warning {
    background-color: var(--warning);
    border-color: var(--warning);
    color: #333;
    border-radius: var(--btn-radius);
    padding: 12px 24px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-warning:hover {
    background-color: var(--warning);
    border-color: var(--warning);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(255, 209, 102, 0.3);
}

.reset-button-container {
    text-align: center;
    margin: 15px 0 30px;
}

#resetButton {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: var(--transition);
    padding: 12px 24px;
}

#resetButton i {
    transition: transform 0.5s ease;
}

#resetButton:hover i {
    animation: girar 1s infinite linear;
}

@keyframes girar {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.results-section {
    background: var(--results-section-bg);
    border-radius: var(--card-radius);
    padding: 25px;
    margin-top: 25px;
    box-shadow: var(--card-shadow);
}

.results-title {
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.results-title i {
    margin-right: 10px;
    color: var(--success);
}

.alert-success {
    background-color: var(--alert-success-bg);
    border: none;
    border-radius: 12px;
    padding: 20px;
    color: var(--text-color);
}

.list-unstyled li {
    padding: 8px 0;
    border-bottom: 1px dashed rgba(128, 128, 128, 0.2);
    font-size: 1.05rem;
}

.list-unstyled li:last-child {
    border-bottom: none;
}

.fw-bold {
    font-weight: 700 !important;
    color: var(--text-color);
}

.lucro { 
    color: var(--success); 
    font-weight: 700; 
}

.prejuizo { 
    color: var(--danger); 
    font-weight: 700; 
}

.donation-section {
    background: var(--donation-bg);
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    padding: 25px;
    margin: 30px auto;
    max-width: 800px;
    color: var(--donation-text);
}

.donation-section button#toggleDonation {
    background-color: var(--donation-button-bg);
    color: var(--donation-button-color);
    border: none;
    width: 100%;
    padding: 14px;
    font-weight: 700;
    border-radius: var(--btn-radius);
    transition: var(--transition);
}

.donation-section button#toggleDonation:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

#donationInfo {
    padding-top: 20px;
}

.donation-item {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    background: var(--donation-item-bg);
    padding: 15px;
    border-radius: 12px;
    transition: var(--transition);
}

.donation-item:hover {
    background: var(--donation-item-hover);
    transform: translateY(-3px);
}

.donation-item .text-muted {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    margin-top: 5px;
}

.donation-item button {
    background-color: var(--donation-button-bg);
    color: var(--donation-button-color);
    border: none;
    padding: 10px 16px;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
}

.donation-item button:hover {
    background: var(--donation-button-bg);
    transform: scale(1.05);
}

.toast-message {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 14px 28px;
    border-radius: 8px;
    z-index: 1000;
    font-weight: 500;
    animation: fadeInOut 2s ease;
}

@keyframes fadeInOut {
    0% { opacity: 0; transform: translate(-50%, -40%); }
    15% { opacity: 1; transform: translate(-50%, -50%); }
    85% { opacity: 1; transform: translate(-50%, -50%); }
    100% { opacity: 0; transform: translate(-50%, -60%); }
}

footer {
    margin-top: auto;
    text-align: center;
    padding: 20px;
    background: var(--footer-bg);
    color: var(--footer-text);
    font-weight: 500;
}

@media (max-width: 768px) {
    .card-body {
        padding: 20px;
    }
    
    .odds-container {
        flex-direction: column;
    }
    
    .donation-item {
        grid-template-columns: 1fr;
    }
    
    .donation-item button {
        width: 100%;
        margin-top: 10px;
    }
    
    .container {
        padding: 10px;
    }
    
    .theme-switcher {
        top: 10px;
        right: 10px;
    }
    
    .theme-switcher button {
        width: 36px;
        height: 36px;
    }
}