/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2rem 0;
    text-align: center;
}

.header-content h1 {
    color: white;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.tagline {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    font-weight: 300;
}

/* Main content */
.main {
    padding: 3rem 0;
}

/* Intro section */
.intro {
    text-align: center;
    margin-bottom: 3rem;
}

.intro h2 {
    color: white;
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.intro p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    line-height: 1.7;
}

.nisab-info {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
}

.nisab-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.nisab-card h3 {
    color: #333;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.nisab-value {
    color: #2563eb;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.nisab-desc {
    color: #666;
    font-size: 0.9rem;
}

/* Calculator */
.calculator {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: 3rem;
}

.form-section {
    margin-bottom: 2.5rem;
}

.section-title {
    color: #1f2937;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e5e7eb;
}

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

.input-group label {
    display: block;
    color: #374151;
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    line-height: 1.4;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.currency {
    position: absolute;
    left: 12px;
    color: #6b7280;
    font-weight: 500;
    z-index: 1;
}

.input-wrapper input {
    width: 100%;
    padding: 12px 12px 12px 28px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.input-wrapper input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.input-wrapper input:hover {
    border-color: #d1d5db;
}

/* Results section */
.results-section {
    margin: 2.5rem 0;
}

.results-card {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: 12px;
    padding: 2rem;
    border: 2px solid #e2e8f0;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.result-item:last-of-type {
    border-bottom: none;
}

.result-label {
    font-weight: 500;
    color: #374151;
}

.result-value {
    font-weight: 600;
    color: #1f2937;
    font-size: 1.1rem;
}

.zakat-due {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    margin: 1rem -2rem -2rem;
    padding: 1.5rem 2rem;
    border-radius: 0 0 12px 12px;
}

.zakat-due .result-label,
.zakat-due .result-value {
    color: white;
    font-size: 1.2rem;
    font-weight: 700;
}

.nisab-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
}

.nisab-status.below-nisab {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fbbf24;
}

.nisab-status.above-nisab {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}

/* Action buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: #f8fafc;
    color: #374151;
    border: 2px solid #e5e7eb;
}

.btn-secondary:hover {
    background: #f1f5f9;
    border-color: #d1d5db;
}

/* Info section */
.info-section {
    margin: 3rem 0;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.info-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.info-card h3 {
    color: #1f2937;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.info-card p {
    color: #4b5563;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem 0;
    text-align: center;
    margin-top: 3rem;
}

.footer p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .header-content h1 {
        font-size: 2rem;
    }
    
    .intro h2 {
        font-size: 1.5rem;
    }
    
    .calculator {
        padding: 1.5rem;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .nisab-card {
        padding: 1rem 1.5rem;
    }
    
    .results-card {
        padding: 1.5rem;
    }
    
    .zakat-due {
        margin: 1rem -1.5rem -1.5rem;
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .header-content h1 {
        font-size: 1.8rem;
    }
    
    .calculator {
        padding: 1rem;
    }
    
    .section-title {
        font-size: 1.3rem;
    }
    
    .result-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .zakat-due .result-label,
    .zakat-due .result-value {
        font-size: 1.1rem;
    }
}

/* Animation for smooth transitions */
.calculator-form {
    transition: all 0.3s ease;
}

.input-wrapper input {
    transition: all 0.2s ease;
}

.results-card {
    transition: all 0.3s ease;
}

/* Loading state */
.calculating {
    opacity: 0.7;
    pointer-events: none;
}

/* Success animation */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results-card.updated {
    animation: slideIn 0.5s ease;
}