:root {
    --primary-color: #004a98; /* RD Fincare Blue */
    --primary-light: #1665c0;
    --primary-dark: #002e60;
    --accent-color: #e6f0fa;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #f4f7fb;
    --card-bg: #ffffff;
    --border-color: #d1d9e6;
    --shadow: 0 10px 30px rgba(0, 74, 152, 0.08);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    background-image: linear-gradient(135deg, #f4f7fb 0%, #e6f0fa 100%);
    display: flex;
    flex-direction: column;
}

.calc-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 60px 20px;
    flex-grow: 1;
}

.calculator-container {
    background-color: var(--card-bg);
    border-radius: 24px;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 900px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.header {
    background-color: var(--card-bg);
    padding: 35px 40px 25px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    max-width: 220px;
    height: auto;
    margin-bottom: 20px;
    object-fit: contain;
}

.header h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.header p {
    color: var(--text-light);
    font-size: 1rem;
}

.calculator-body {
    display: flex;
    flex-wrap: wrap;
    padding: 40px;
    gap: 40px;
}

.input-section {
    flex: 1;
    min-width: 320px;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-color);
}

.input-group input[type="number"] {
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
    outline: none;
    background-color: #fafbfc;
    color: var(--primary-dark);
    font-weight: 600;
}

.input-group input[type="number"]::placeholder {
    font-weight: 400;
    color: #a0aec0;
}

.input-group input[type="number"]:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0, 74, 152, 0.1);
    background-color: #fff;
}

.tenure-input {
    display: flex;
    gap: 15px;
    align-items: stretch;
    flex-wrap: wrap;
}

.tenure-input input[type="number"] {
    flex: 1 1 130px;
}

.toggle-container {
    display: flex;
    background-color: #f1f5f9;
    border-radius: 10px;
    padding: 4px;
    flex: 1 1 150px;
}

.toggle-container input[type="radio"] {
    display: none;
}

.toggle-btn {
    flex: 1;
    text-align: center;
    padding: 10px 16px;
    cursor: pointer;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-light);
    transition: var(--transition);
}

.toggle-container input[type="radio"]:checked + .toggle-btn {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 2px 8px rgba(0, 74, 152, 0.2);
}

.action-buttons {
    display: flex;
    gap: 15px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.action-buttons button {
    flex: 1;
    min-width: 140px;
}

#calculate-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 16px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

#calculate-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 74, 152, 0.2);
}

#calculate-btn:active {
    transform: translateY(0);
}

#download-pdf-btn {
    background-color: #10b981;
    color: white;
    border: none;
    padding: 16px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

#download-pdf-btn:hover {
    background-color: #059669;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(16, 185, 129, 0.2);
}

#download-pdf-btn:active {
    transform: translateY(0);
}

.result-section {
    flex: 1;
    min-width: 320px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    background-color: var(--primary-color);
    background-image: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-dark) 100%);
    padding: 30px;
    border-radius: 20px;
    color: white;
}

.client-info-display {
    background: rgba(255, 255, 255, 0.15);
    padding: 15px 20px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    margin-bottom: 5px;
}

.client-info-display p {
    font-size: 1.05rem;
    color: #fff;
    margin: 0;
}

.result-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 20px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.main-result {
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0.05) 100%);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
}

.main-result h3 {
    font-size: 1.1rem;
    font-weight: 400;
    opacity: 0.9;
    margin-bottom: 5px;
}

.main-result .amount {
    font-size: 2.5rem;
    font-weight: 700;
}

.sub-result h3, .total-result h3 {
    font-size: 0.9rem;
    font-weight: 400;
    opacity: 0.8;
    margin-bottom: 5px;
}

.sub-result .amount {
    font-size: 1.4rem;
    font-weight: 600;
}

.total-result {
    margin-top: auto;
    background: rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.1);
}

.total-result .amount {
    font-size: 1.8rem;
    font-weight: 700;
}

/* Animations */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card {
    animation: fadeUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.result-card:nth-child(1) { animation-delay: 0.1s; }
.result-card:nth-child(2) { animation-delay: 0.2s; }
.result-card:nth-child(3) { animation-delay: 0.3s; }
.result-card:nth-child(4) { animation-delay: 0.4s; }

/* Responsive Adjustments */
@media (max-width: 768px) {
    .calculator-body {
        padding: 30px 20px;
    }
    
    .input-section, .result-section {
        min-width: 100%;
    }
    
    .tenure-input {
        flex-direction: column;
        align-items: stretch;
    }
    
    .header {
        padding: 25px 20px;
    }
}

/* --- PDF Template Styles --- */
.pdf-template {
    width: 730px; /* Reduced width so it doesn't get cut off in standard A4 with margins */
    padding: 40px;
    background-color: white;
    color: #333;
    font-family: 'Inter', sans-serif;
    display: none; /* Hidden by default */
    margin: 20px auto;
    position: relative;
    overflow: hidden;
}

.pdf-watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.06; /* Very low transparency */
    width: 60%;
    z-index: 0;
    pointer-events: none;
}

.pdf-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 20px;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.pdf-logo {
    max-width: 180px;
    object-fit: contain;
}

.pdf-title h2 {
    color: var(--primary-color);
    margin: 0;
    font-size: 1.8rem;
}

.pdf-title p {
    color: #666;
    margin: 5px 0 0;
    text-align: right;
    font-size: 0.9rem;
}

.pdf-client-info {
    margin-bottom: 25px;
    padding: 12px 15px;
    background-color: #f4f7fb;
    border-left: 4px solid var(--primary-color);
    border-radius: 4px;
    position: relative;
    z-index: 1;
}

.pdf-client-info h3 {
    margin: 0;
    color: var(--primary-dark);
    font-size: 1.1rem;
    font-weight: 600;
}

.pdf-body {
    display: flex;
    gap: 40px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.pdf-details {
    flex: 1.2;
}

.pdf-table {
    width: 100%;
    border-collapse: collapse;
}

.pdf-table td {
    padding: 14px 12px;
    border-bottom: 1px solid #eee;
    font-size: 1.05rem;
}

.pdf-table td:nth-child(2) {
    text-align: right;
    font-weight: 600;
    color: #111;
}

.pdf-table tr.highlight td {
    background-color: #f8fafc;
    color: var(--primary-color);
    font-weight: 600;
}

.pdf-table tr.total td {
    background-color: var(--primary-color);
    color: white;
    font-size: 1.2rem;
    font-weight: 700;
    border-bottom: none;
}

.pdf-chart {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 300px;
}

.pdf-footer {
    margin-top: 40px;
    text-align: center;
    font-size: 0.95rem;
    color: #777;
    border-top: 1px solid #eee;
    padding-top: 20px;
}