:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --dark-bg: #0f1419;
    --card-bg: #1a1f2e;
    --input-bg: #252b3b;
    --border-color: #2d3748;
    --text-primary: #e2e8f0;
    --text-secondary: #a0aec0;
    --text-muted: #718096;
}

body {
    background: var(--dark-bg);
    color: var(--text-primary);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
}
.cal-container {
    max-width: 98%;
    margin: 0 auto;
    padding: 0 20px;
}
.accordion-item .accordion-button{
    background: #050814 !important;
    border-bottom: 1px solid var(--border-color) !important;
}
#accordionExample .accordion-body{
    background: var(--card-bg);
}
.accordion-item{
    border: 1px solid var(--border-color) !important;
}
.main-container {
    background: linear-gradient(135deg, #0f1419 0%, #1a1f2e 50%, #252b3b 100%);
    min-height: 100vh;
    padding: 2rem 0;
}

.calculator-card {
    background: var(--card-bg);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    overflow: hidden;
}

.calculator-header {
    background: #050814;
    padding: 2rem;
    text-align: center;
    color: white;
    border-bottom: 1px solid var(--border-color);
}

.calculator-header h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 700;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.calculator-header p {
    margin: 0.5rem 0 0 0;
    opacity: 0.9;
    font-size: 1.1rem;
}

.form-section {
    padding: 2rem;
}

.section-title {
    font-size: 1.2rem;
    line-height: 1.3;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group {
    margin-bottom: 2rem;
}

.form-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.cal-container .cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.cta-buttons .btn {
    padding: 15px 25px;
    border-radius: 12px;
    border: none;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-decoration: none;
    color: white;
}

.cta-buttons .btn-primary {
    background: #25D366;
    box-shadow: var(--shadow-medium);
}

.cta-buttons .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-heavy);
}

.cta-buttons .btn-secondary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

.cta-buttons .btn-secondary:hover {
    background: var(--bg-secondary);
}
.form-help {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    line-height: 1.4;
}

.form-control, .form-select {
    background: var(--input-bg) !important;
    background-image: none !important;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 12px;
    padding: 0.8rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    background: var(--input-bg);
    border-color: #667eea;
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-select option {
    background: var(--input-bg);
    color: var(--text-primary);
}

.btn-calculate {
    background: var(--secondary-gradient);
    border: none;
    padding: 1rem 3rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    color: white;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(245, 87, 108, 0.3);
}

.btn-calculate:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(245, 87, 108, 0.4);
    color: white;
}

.results-section {
    margin-top: 2rem;
}

.result-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.3s ease;
}

.result-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.result-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.result-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.leads-value { color: #4facfe; }
.conversion-value { color: #00f2fe; }
.revenue-value { color: #f5576c; }
.roi-value { color: #f093fb; }

.currency-symbol {
    font-size: 1.5rem;
    vertical-align: top;
}

.industry-specific {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 1rem;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.alert-info {
    background: rgba(74, 172, 254, 0.1);
    border: 1px solid rgba(74, 172, 254, 0.2);
    color: #4facfe;
}

@media (max-width: 768px) {
    .calculator-header h1 {
        font-size: 2rem;
    }
    
    .form-section {
        padding: 1.5rem;
    }
}

.loading-spinner {
    display: none;
    text-align: center;
    padding: 2rem;
}

.fade-in {
    animation: fadeIn 0.6s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}