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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #01b960 0%, #00a854 50%, #239b56 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.15);
    overflow: hidden;
    animation: slideIn 0.8s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header {
    background: linear-gradient(135deg, #01b960, #00a854);
    color: white;
    padding: 30px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="white" opacity="0.1"/><circle cx="80" cy="40" r="3" fill="white" opacity="0.1"/><circle cx="40" cy="80" r="2" fill="white" opacity="0.1"/><circle cx="60" cy="15" r="1.5" fill="white" opacity="0.1"/><circle cx="25" cy="65" r="2.5" fill="white" opacity="0.1"/></svg>');
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.header p {
    font-size: 1.2em;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    min-height: 600px;
}

.form-section {
    padding: 40px;
    background: #f8f9fa;
    border-right: 1px solid #e9ecef;
}

.result-section {
    padding: 40px;
    background: linear-gradient(135deg, #01b960, #00a854);
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
    font-size: 0.95em;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e8ed;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: #01b960;
    box-shadow: 0 0 0 3px rgba(1, 185, 96, 0.1);
    transform: translateY(-2px);
}

.form-control:hover {
    border-color: #00a854;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 10px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    padding: 12px;
    background: white;
    border-radius: 8px;
    border: 2px solid #e1e8ed;
    transition: all 0.3s ease;
    cursor: pointer;
}

.checkbox-item:hover {
    border-color: #01b960;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(1, 185, 96, 0.15);
}

.checkbox-item input[type="checkbox"] {
    margin-right: 10px;
    transform: scale(1.2);
    accent-color: #01b960;
}

.checkbox-item input[type="checkbox"]:checked + label {
    color: #01b960;
    font-weight: 600;
}

.calculate-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #01b960, #00a854);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.calculate-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.calculate-btn:hover::before {
    left: 100%;
}

.calculate-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(1, 185, 96, 0.3);
}

.calculate-btn:active {
    transform: translateY(-1px);
}

.result-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: fadeInUp 0.6s ease-out;
}

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

.total-cost {
    font-size: 3em;
    font-weight: bold;
    margin: 20px 0;
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.cost-breakdown {
    margin-top: 30px;
    text-align: left;
}

.cost-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    animation: slideInLeft 0.5s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.cost-item:last-child {
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    font-weight: bold;
    font-size: 1.1em;
}

.tips-section {
    margin-top: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.tips-section h3 {
    margin-bottom: 15px;
    color: #ffffff;
    font-size: 1.3em;
}

.tips-list {
    list-style: none;
    text-align: left;
}

.tips-list li {
    margin-bottom: 8px;
    padding-left: 25px;
    position: relative;
    line-height: 1.5;
}

.tips-list li::before {
    content: '💡';
    position: absolute;
    left: 0;
    top: 0;
}

.loading {
    display: none;
    text-align: center;
    padding: 40px;
}

.spinner {
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top: 4px solid #ffffff;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

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

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

/* Pakistan Flag Colors Theme */
.pakistan-accent {
    background: linear-gradient(45deg, #01b960, #ffffff);
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .form-section {
        border-right: none;
        border-bottom: 1px solid #e9ecef;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .checkbox-group {
        grid-template-columns: 1fr;
    }
    
    .header h1 {
        font-size: 2em;
    }
    
    .header p {
        font-size: 1em;
    }
    
    .total-cost {
        font-size: 2.5em;
    }
    
    .container {
        margin: 10px;
        border-radius: 15px;
    }
    
    .form-section, .result-section {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    
    .header {
        padding: 20px;
    }
    
    .header h1 {
        font-size: 1.8em;
    }
    
    .form-section, .result-section {
        padding: 20px;
    }
    
    .total-cost {
        font-size: 2em;
    }
    
    .calculate-btn {
        padding: 12px;
        font-size: 16px;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #01b960, #00a854);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #00a854, #239b56);
}

/* Selection Color */
::selection {
    background: rgba(1, 185, 96, 0.3);
    color: #333;
}