/* SGPA/CGPA Calculator Plugin Styles */

/* Reset and Base Styles */
.sgpa-cgpa-calculator-container * {
    box-sizing: border-box;
}

.sgpa-cgpa-calculator-container {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8fafc;
    margin: 0;
    padding: 0;
}

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

/* Navigation */
.sgpa-cgpa-calculator-container .calculator-nav {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.sgpa-cgpa-calculator-container .nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.sgpa-cgpa-calculator-container .nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sgpa-cgpa-calculator-container .nav-logo i {
    color: #6366f1;
    font-size: 1.5rem;
}

.sgpa-cgpa-calculator-container .nav-logo h2 {
    color: #6366f1;
    font-weight: 700;
    font-size: 1.5rem;
    margin: 0;
}

.sgpa-cgpa-calculator-container .nav-menu {
    display: flex;
    gap: 2rem;
}

.sgpa-cgpa-calculator-container .nav-link {
    text-decoration: none;
    color: #64748b;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    cursor: pointer;
}

.sgpa-cgpa-calculator-container .nav-link:hover,
.sgpa-cgpa-calculator-container .nav-link.active {
    color: #6366f1;
    background: rgba(99, 102, 241, 0.1);
}

/* Hero Section */
.sgpa-cgpa-calculator-container .hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 0 40px;
    text-align: center;
    margin-bottom: 2rem;
}

.sgpa-cgpa-calculator-container .hero-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.sgpa-cgpa-calculator-container .hero-content p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Calculator Sections */
.sgpa-cgpa-calculator-container .calculator-section {
    display: none;
    padding: 40px 0;
}

.sgpa-cgpa-calculator-container .calculator-section.active {
    display: block;
}

.sgpa-cgpa-calculator-container .section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.sgpa-cgpa-calculator-container .section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1e293b;
}

.sgpa-cgpa-calculator-container .section-header p {
    font-size: 1.1rem;
    color: #64748b;
}

/* Calculator Card */
.sgpa-cgpa-calculator-container .calculator-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.sgpa-cgpa-calculator-container .calculator-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #f1f5f9;
}

.sgpa-cgpa-calculator-container .calculator-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0;
}

/* Buttons */
.sgpa-cgpa-calculator-container .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 12px 24px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    font-family: inherit;
}

.sgpa-cgpa-calculator-container .btn-primary {
    background: #6366f1;
    color: white;
    border-color: #6366f1;
}

.sgpa-cgpa-calculator-container .btn-primary:hover {
    background: #4f46e5;
    border-color: #4f46e5;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
}

.sgpa-cgpa-calculator-container .btn-success {
    background: #10b981;
    color: white;
    border-color: #10b981;
}

.sgpa-cgpa-calculator-container .btn-success:hover {
    background: #059669;
    border-color: #059669;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(16, 185, 129, 0.3);
}

.sgpa-cgpa-calculator-container .btn-secondary {
    background: #6b7280;
    color: white;
    border-color: #6b7280;
}

.sgpa-cgpa-calculator-container .btn-secondary:hover {
    background: #4b5563;
    border-color: #4b5563;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(107, 114, 128, 0.3);
}

.sgpa-cgpa-calculator-container .btn-danger {
    background: #ef4444;
    color: white;
    border-color: #ef4444;
}

.sgpa-cgpa-calculator-container .btn-danger:hover {
    background: #dc2626;
    border-color: #dc2626;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(239, 68, 68, 0.3);
}

/* Subject/Semester Items */
.sgpa-cgpa-calculator-container .subject-item,
.sgpa-cgpa-calculator-container .semester-item {
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.sgpa-cgpa-calculator-container .subject-item:hover,
.sgpa-cgpa-calculator-container .semester-item:hover {
    border-color: #6366f1;
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.1);
}

.sgpa-cgpa-calculator-container .item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.sgpa-cgpa-calculator-container .item-title {
    font-weight: 600;
    color: #1e293b;
    font-size: 1.1rem;
}

.sgpa-cgpa-calculator-container .remove-btn {
    background: #ef4444;
    color: white;
    border: none;
    border-radius: 8px;
    padding: 8px 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.sgpa-cgpa-calculator-container .remove-btn:hover {
    background: #dc2626;
    transform: scale(1.05);
}

.sgpa-cgpa-calculator-container .item-fields {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
}

.sgpa-cgpa-calculator-container .field-group {
    display: flex;
    flex-direction: column;
}

.sgpa-cgpa-calculator-container .field-group label {
    font-weight: 500;
    color: #374151;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.sgpa-cgpa-calculator-container .field-group input,
.sgpa-cgpa-calculator-container .field-group select {
    padding: 10px 12px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.sgpa-cgpa-calculator-container .field-group input:focus,
.sgpa-cgpa-calculator-container .field-group select:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Calculation Summary */
.sgpa-cgpa-calculator-container .calculation-summary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 15px;
    padding: 2rem;
    margin: 2rem 0;
}

.sgpa-cgpa-calculator-container .summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 1.1rem;
}

.sgpa-cgpa-calculator-container .summary-item:last-child {
    border-bottom: none;
}

.sgpa-cgpa-calculator-container .summary-item.result {
    font-size: 1.5rem;
    font-weight: 700;
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem;
    border-radius: 10px;
    margin-top: 1rem;
}

/* Action Buttons */
.sgpa-cgpa-calculator-container .action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Grade Scale Section */
.sgpa-cgpa-calculator-container .grade-scale {
    background: white;
    padding: 60px 0;
    margin-top: 2rem;
}

.sgpa-cgpa-calculator-container .grade-tables {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.sgpa-cgpa-calculator-container .grade-table {
    background: #f8fafc;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.sgpa-cgpa-calculator-container .grade-table h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #1e293b;
    text-align: center;
}

.sgpa-cgpa-calculator-container .grade-table table {
    width: 100%;
    border-collapse: collapse;
}

.sgpa-cgpa-calculator-container .grade-table th,
.sgpa-cgpa-calculator-container .grade-table td {
    padding: 12px;
    text-align: center;
    border: 1px solid #e2e8f0;
}

.sgpa-cgpa-calculator-container .grade-table th {
    background: #6366f1;
    color: white;
    font-weight: 600;
}

.sgpa-cgpa-calculator-container .grade-table tr:nth-child(even) {
    background: #f1f5f9;
}

.sgpa-cgpa-calculator-container .grade-table tr:hover {
    background: rgba(99, 102, 241, 0.1);
}

/* Notification Styles */
.sgpa-cgpa-calculator-container .notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #10b981;
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 10000;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    max-width: 400px;
}

.sgpa-cgpa-calculator-container .notification.show {
    transform: translateX(0);
}

.sgpa-cgpa-calculator-container .notification-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.sgpa-cgpa-calculator-container .notification-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sgpa-cgpa-calculator-container .notification-close:hover {
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sgpa-cgpa-calculator-container .nav-menu {
        gap: 1rem;
    }
    
    .sgpa-cgpa-calculator-container .hero-content h1 {
        font-size: 2rem;
    }
    
    .sgpa-cgpa-calculator-container .hero-content p {
        font-size: 1rem;
    }
    
    .sgpa-cgpa-calculator-container .calculator-card {
        padding: 1.5rem;
    }
    
    .sgpa-cgpa-calculator-container .calculator-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .sgpa-cgpa-calculator-container .item-fields {
        grid-template-columns: 1fr;
    }
    
    .sgpa-cgpa-calculator-container .action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .sgpa-cgpa-calculator-container .grade-tables {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .sgpa-cgpa-calculator-container .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .sgpa-cgpa-calculator-container .section-header h2 {
        font-size: 2rem;
    }
    
    .sgpa-cgpa-calculator-container .calculator-card {
        padding: 1rem;
    }
    
    .sgpa-cgpa-calculator-container .summary-item {
        font-size: 1rem;
    }
    
    .sgpa-cgpa-calculator-container .summary-item.result {
        font-size: 1.3rem;
    }
    
    .sgpa-cgpa-calculator-container .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

/* Animation Classes */
.sgpa-cgpa-calculator-container .fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.sgpa-cgpa-calculator-container .fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Loading Animation */
.sgpa-cgpa-calculator-container .loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #6366f1;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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