:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #22c55e;
    --danger-color: #ef4444;
    --background-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Vazirmatn', 'Tahoma', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-color);
}

/* Logo Styles */
.logo-container {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
}

.logo-icon {
    font-size: 40px;
    color: #fff;
}

/* Title Styles */
.main-title {
    color: #fff;
    font-weight: 700;
    font-size: 2.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.subtitle {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
}

/* Main Card */
.main-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.main-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.2);
}

/* Form Styles */
.form-label {
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-control {
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    text-align: center;
    letter-spacing: 2px;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.form-text {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 8px;
}

/* Button Styles */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border: none;
    border-radius: 12px;
    padding: 14px 28px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Loading Section */
.loading-section {
    text-align: center;
    padding: 2rem;
}

.spinner-border {
    width: 3rem;
    height: 3rem;
}

/* Result Section */
.result-section {
    animation: fadeIn 0.5s ease;
}

.result-header {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--success-color);
    font-weight: 600;
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.result-header i {
    font-size: 1.5rem;
}

.result-body {
    background: #f8fafc;
    border-radius: 12px;
    padding: 1.5rem;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px dashed var(--border-color);
}

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

.result-label {
    color: var(--text-muted);
    font-weight: 500;
}

.result-value {
    font-weight: 600;
    color: var(--text-color);
}

/* Error Section */
.error-section {
    text-align: center;
    padding: 2rem;
    animation: fadeIn 0.5s ease;
}

.error-icon {
    font-size: 4rem;
    color: var(--danger-color);
    margin-bottom: 1rem;
}

/* Info Card */
.info-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    padding: 1.5rem;
    backdrop-filter: blur(10px);
}

.info-header {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.info-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.info-list li {
    padding: 8px 0;
    color: var(--text-muted);
    position: relative;
    padding-right: 20px;
}

.info-list li::before {
    content: '•';
    color: var(--primary-color);
    position: absolute;
    right: 0;
    font-weight: bold;
}

/* Footer */
.footer-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

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

/* Responsive */
@media (max-width: 768px) {
    .main-title {
        font-size: 1.8rem;
    }
    
    .main-card {
        padding: 1.5rem;
    }
    
    .result-item {
        flex-direction: column;
        gap: 4px;
    }
}