/* Responsive Design for CGPA Calculator */

/* Large tablets and small desktops */
@media (max-width: 1024px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .input-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.75rem;
    }
    
    .course-inputs {
        grid-template-columns: 1fr 1fr 100px;
    }
}

/* Tablets */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
        max-width: 100%;
    }
    
    header {
        padding: 2.5rem 0;
    }
    
    header h1 {
        font-size: 2rem;
    }

    .input-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 1.5rem;
    }

    .course-inputs {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .course-actions {
        flex-direction: column;
        gap: 1rem;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .result-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 1.5rem;
    }

    .card-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .retake-inputs {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .course-item.retake-course .course-header {
        margin-left: 0;
        margin-top: 2.5rem;
    }

    .course-item.retake-course::before {
        top: 0.5rem;
        left: 50%;
        transform: translateX(-50%);
    }
    
    .back-link {
        font-size: 14px;
        padding: 10px 0;
    }
}

/* Mobile devices */
@media (max-width: 480px) {
    .container {
        padding: 0 0.75rem;
    }
    
    header {
        padding: 2rem 0;
    }
    
    header h1 {
        font-size: 1.875rem;
    }
    
    .card {
        margin-bottom: 1.5rem;
    }
    
    .card-header {
        padding: 1.5rem 1.5rem 1rem;
    }
    
    .card-header h2 {
        font-size: 1.25rem;
    }
    
    .input-grid,
    .courses-container,
    .result-grid {
        padding: 1.5rem;
    }
    
    .input-group label {
        font-size: 0.875rem;
    }
    
    .input,
    .select {
        padding: 0.625rem;
        font-size: 0.875rem;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
    }
    
    .result-card h3 {
        font-size: 1rem;
    }
    
    .result-value {
        font-size: 2rem;
    }
    
    .result-label {
        font-size: 0.75rem;
    }
    
    .back-link {
        font-size: 13px;
        margin-bottom: 1rem;
    }
}

/* Small mobile devices */
@media (max-width: 360px) {
    .container {
        padding: 0 0.5rem;
    }
    
    header h1 {
        font-size: 1.625rem;
    }
    
    .card-header,
    .input-grid,
    .courses-container,
    .result-grid {
        padding: 1.25rem;
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.8125rem;
    }
    
    .result-value {
        font-size: 1.75rem;
    }
}

/* Landscape orientation for mobile devices */
@media (max-height: 600px) and (orientation: landscape) {
    header {
        padding: 1.5rem 0;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    .card {
        margin-bottom: 1.25rem;
    }
    
    .input-grid,
    .courses-container,
    .result-grid {
        padding: 1.25rem;
    }
}

/* Better spacing for desktop */
@media (min-width: 1200px) {
    .container {
        padding: 0 2rem;
    }
    
    .card {
        margin-bottom: 2.5rem;
    }
    
    .input-grid {
        padding: 2.5rem;
    }
    
    .courses-container {
        padding: 2.5rem;
    }
    
    .result-grid {
        padding: 2.5rem;
    }
}

/* High resolution displays */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }
}