:root {
    --teal: #2ec4b6;
    --coral: #ff6b6b;
    --lavender: #a18aff;
    --gradient: linear-gradient(135deg, var(--teal), var(--lavender));
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', sans-serif;
}

body {
    background: linear-gradient(45deg, #f8f9fa, #f1f3f5);
    min-height: 100vh;
    padding: 2rem;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

.title {
    text-align: center;
    color: #343a40;
    font-weight: 300;
    margin: 2rem 0;
    font-size: 2.5rem;
}

.calculator-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.course-entry {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr auto;
    gap: 1rem;
    margin-bottom: 1rem;
    align-items: center;
}

input, select {
    padding: 0.8rem;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

input:focus, select:focus {
    border-color: var(--teal);
    outline: none;
    box-shadow: 0 0 0 3px rgba(46, 196, 182, 0.1);
}

.add-course {
    width: 100%;
    padding: 0.8rem;
    background: #fff;
    border: 2px dashed #e9ecef;
    border-radius: 12px;
    color: var(--teal);
    cursor: pointer;
    margin: 1rem 0;
    transition: all 0.3s ease;
}

.add-course:hover {
    border-color: var(--teal);
    background: rgba(46, 196, 182, 0.05);
}

.calculate-btn {
    background: var(--gradient);
    color: white;
    border: none;
    padding: 1.2rem 2.5rem;
    border-radius: 15px;
    font-size: 1.1rem;
    cursor: pointer;
    width: 100%;
    transition: transform 0.2s, box-shadow 0.2s;
}

.calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(46, 196, 182, 0.3);
}

.result-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    animation: slideUp 0.5s ease;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.checkmark {
    font-size: 3rem;
    color: var(--teal);
    margin-bottom: 1rem;
    animation: scaleIn 0.5s ease;
}

.gpa-result {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--coral);
    margin: 1rem 0;
}

.academic-icons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    color: var(--lavender);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.remove-course {
    background: none;
    border: none;
    color: #ff6b6b;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0 0.5rem;
}

@media (max-width: 768px) {
    .course-entry {
        grid-template-columns: 1fr;
    }
    
    body {
        padding: 1rem;
    }
}

@keyframes slideUp {
    from { transform: translateY(50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes scaleIn {
    from { transform: scale(0); }
    to { transform: scale(1); }
}

.hidden {
    display: none;
}