/* =========================================
   GPA CALCULATOR CSS
   ========================================= */

:root {
    --gpa-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gpa-gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gpa-gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gpa-gradient-green: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --gpa-gradient-gold: linear-gradient(135deg, #f7971e 0%, #ffd200 100%);
    --gpa-bg-dark: #0f172a;
    --gpa-bg-card: #1e293b;
    --gpa-bg-input: #0f172a;
    --gpa-border: #334155;
    --gpa-border-light: #475569;
    --gpa-white: #ffffff;
    --gpa-gray: #cbd5e1;
    --gpa-muted: #94a3b8;
    --gpa-success: #22c55e;
    --gpa-warning: #eab308;
    --gpa-danger: #ef4444;
    --gpa-purple: #a855f7;
    --gpa-pink: #ec4899;
    --gpa-cyan: #06b6d4;
}

.gpa-calc-wrapper {
    background: linear-gradient(to bottom, var(--gpa-bg-dark), var(--gpa-bg-card));
    padding: 3rem 1.5rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gpa-white);
    line-height: 1.6;
    min-height: 100vh;
}

.gpa-calc-wrapper * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.gpa-calc-container {
    max-width: 1000px;
    margin: 0 auto;
}

/* Header */
.gpa-calc-wrapper .calc-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.gpa-calc-wrapper .calc-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gpa-white);
    margin-bottom: 1rem;
    background: var(--gpa-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gpa-calc-wrapper .calc-description {
    font-size: 1.1rem;
    color: var(--gpa-gray);
    max-width: 700px;
    margin: 0 auto;
}

/* Card */
.gpa-calc-wrapper .calc-card {
    background: var(--gpa-bg-card);
    border: 1px solid var(--gpa-border);
    border-radius: 1.5rem;
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

/* Section Title */
.gpa-calc-wrapper .section-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gpa-white);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.gpa-calc-wrapper .section-title i {
    color: var(--gpa-purple);
}

/* Settings Section */
.gpa-calc-wrapper .settings-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gpa-border);
}

.gpa-calc-wrapper .settings-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.gpa-calc-wrapper .setting-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.gpa-calc-wrapper .form-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gpa-gray);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.gpa-calc-wrapper .form-label i {
    color: var(--gpa-purple);
}

.gpa-calc-wrapper .form-select {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--gpa-border-light);
    border-radius: 0.75rem;
    background: var(--gpa-bg-input);
    color: var(--gpa-white);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.gpa-calc-wrapper .form-select:focus {
    outline: none;
    border-color: var(--gpa-purple);
    box-shadow: 0 0 0 3px rgba(168,85,247,0.15);
}

/* Semester Section */
.gpa-calc-wrapper .semester-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gpa-border);
}

.gpa-calc-wrapper .semester-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.gpa-calc-wrapper .btn-add-course {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--gpa-gradient-green);
    color: var(--gpa-white);
    border: none;
    border-radius: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.gpa-calc-wrapper .btn-add-course:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(16,185,129,0.3);
}

/* Course Row */
.gpa-calc-wrapper .courses-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.gpa-calc-wrapper .course-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--gpa-bg-input);
    border: 1px solid var(--gpa-border);
    border-radius: 0.75rem;
    padding: 1rem;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.gpa-calc-wrapper .course-number {
    width: 36px;
    height: 36px;
    min-width: 36px;
    background: var(--gpa-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--gpa-white);
}

.gpa-calc-wrapper .course-inputs {
    flex: 1;
    display: grid;
    grid-template-columns: 2fr 1.5fr 1fr;
    gap: 1rem;
}

.gpa-calc-wrapper .course-name,
.gpa-calc-wrapper .course-grade,
.gpa-calc-wrapper .course-credits {
    padding: 0.75rem 1rem;
    border: 1px solid var(--gpa-border-light);
    border-radius: 0.5rem;
    background: var(--gpa-bg-card);
    color: var(--gpa-white);
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.gpa-calc-wrapper .course-name:focus,
.gpa-calc-wrapper .course-grade:focus,
.gpa-calc-wrapper .course-credits:focus {
    outline: none;
    border-color: var(--gpa-purple);
}

.gpa-calc-wrapper .course-grade {
    cursor: pointer;
}

.gpa-calc-wrapper .btn-remove-course {
    width: 40px;
    height: 40px;
    min-width: 40px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 0.5rem;
    color: var(--gpa-danger);
    cursor: pointer;
    transition: all 0.3s ease;
}

.gpa-calc-wrapper .btn-remove-course:hover {
    background: var(--gpa-danger);
    color: var(--gpa-white);
}

/* CGPA Section */
.gpa-calc-wrapper .cgpa-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gpa-border);
}

.gpa-calc-wrapper .cgpa-toggle {
    margin-bottom: 1.5rem;
}

.gpa-calc-wrapper .toggle-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    padding: 1rem;
    background: var(--gpa-bg-input);
    border: 1px solid var(--gpa-border);
    border-radius: 0.75rem;
    transition: all 0.3s ease;
}

.gpa-calc-wrapper .toggle-label:hover {
    border-color: var(--gpa-border-light);
}

.gpa-calc-wrapper .cgpa-checkbox {
    width: 20px;
    height: 20px;
    accent-color: var(--gpa-purple);
    cursor: pointer;
}

.gpa-calc-wrapper .toggle-text {
    font-weight: 500;
    color: var(--gpa-gray);
}

.gpa-calc-wrapper .cgpa-inputs {
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
    }
    to {
        opacity: 1;
        max-height: 200px;
    }
}

.gpa-calc-wrapper .cgpa-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.gpa-calc-wrapper .form-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.gpa-calc-wrapper .form-input {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--gpa-border-light);
    border-radius: 0.75rem;
    background: var(--gpa-bg-input);
    color: var(--gpa-white);
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.gpa-calc-wrapper .form-input:focus {
    outline: none;
    border-color: var(--gpa-purple);
    box-shadow: 0 0 0 3px rgba(168,85,247,0.15);
}

/* Buttons */
.gpa-calc-wrapper .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1.25rem 2.5rem;
    border: none;
    border-radius: 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.gpa-calc-wrapper .btn-primary {
    background: var(--gpa-gradient);
    color: var(--gpa-white);
    box-shadow: 0 10px 30px rgba(168,85,247,0.3);
}

.gpa-calc-wrapper .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(168,85,247,0.5);
}

.gpa-calc-wrapper .btn-secondary {
    background: var(--gpa-border);
    color: var(--gpa-white);
}

.gpa-calc-wrapper .btn-secondary:hover {
    background: var(--gpa-border-light);
}

.gpa-calc-wrapper .controls {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.gpa-calc-wrapper .controls .btn {
    flex: 1;
    min-width: 180px;
}

/* Error Box */
.gpa-calc-wrapper .error-box {
    display: none;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.5);
    border-radius: 0.75rem;
    color: #f87171;
    margin-top: 1.5rem;
}

.gpa-calc-wrapper .error-box.show {
    display: flex;
}

/* Result Section */
.gpa-calc-wrapper .result-section {
    display: none;
    margin-top: 2.5rem;
    padding-top: 2.5rem;
    border-top: 2px solid var(--gpa-border);
}

.gpa-calc-wrapper .result-section.show {
    display: block;
    animation: fadeInUp 0.6s ease;
}

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

/* GPA Display */
.gpa-calc-wrapper .gpa-display {
    margin-bottom: 2.5rem;
}

.gpa-calc-wrapper .gpa-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.gpa-calc-wrapper .gpa-card {
    background: var(--gpa-gradient);
    border-radius: 1.5rem;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 20px 50px rgba(168,85,247,0.3);
}

.gpa-calc-wrapper .gpa-card.cgpa-card {
    background: var(--gpa-gradient-green);
}

.gpa-calc-wrapper .gpa-label {
    font-size: 1rem;
    color: rgba(255,255,255,0.9);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.gpa-calc-wrapper .gpa-value {
    font-size: 4rem;
    font-weight: 800;
    color: var(--gpa-white);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.gpa-calc-wrapper .gpa-scale-label {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 1rem;
}

.gpa-calc-wrapper .gpa-grade-label {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: rgba(255,255,255,0.2);
    border-radius: 2rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gpa-white);
}

/* Statistics */
.gpa-calc-wrapper .statistics-section {
    margin-bottom: 2.5rem;
}

.gpa-calc-wrapper .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

.gpa-calc-wrapper .stat-box {
    background: var(--gpa-bg-input);
    border: 1px solid var(--gpa-border);
    border-radius: 1rem;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.gpa-calc-wrapper .stat-box:hover {
    border-color: var(--gpa-purple);
    transform: translateY(-3px);
}

.gpa-calc-wrapper .stat-icon {
    width: 56px;
    height: 56px;
    min-width: 56px;
    background: var(--gpa-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--gpa-white);
}

.gpa-calc-wrapper .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gpa-white);
    margin-bottom: 0.25rem;
}

.gpa-calc-wrapper .stat-label {
    font-size: 0.85rem;
    color: var(--gpa-muted);
}

/* Grade Distribution */
.gpa-calc-wrapper .distribution-section {
    margin-bottom: 2.5rem;
}

.gpa-calc-wrapper .distribution-container {
    display: grid;
    gap: 1rem;
}

.gpa-calc-wrapper .grade-dist-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--gpa-bg-input);
    border: 1px solid var(--gpa-border);
    border-radius: 0.75rem;
    padding: 1rem;
}

.gpa-calc-wrapper .grade-dist-label {
    width: 60px;
    font-weight: 700;
    color: var(--gpa-white);
}

.gpa-calc-wrapper .grade-dist-bar-wrapper {
    flex: 1;
    height: 32px;
    background: var(--gpa-bg-card);
    border-radius: 1rem;
    overflow: hidden;
    position: relative;
}

.gpa-calc-wrapper .grade-dist-bar {
    height: 100%;
    background: var(--gpa-gradient);
    border-radius: 1rem;
    transition: width 0.6s ease;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 0.75rem;
}

.gpa-calc-wrapper .grade-dist-count {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gpa-white);
}

.gpa-calc-wrapper .grade-dist-percent {
    width: 60px;
    text-align: right;
    font-weight: 600;
    color: var(--gpa-gray);
}

/* Breakdown Table */
.gpa-calc-wrapper .breakdown-section {
    margin-bottom: 2.5rem;
}

.gpa-calc-wrapper .breakdown-table-wrapper {
    background: var(--gpa-bg-input);
    border: 1px solid var(--gpa-border);
    border-radius: 1rem;
    overflow-x: auto;
}

.gpa-calc-wrapper .breakdown-table {
    width: 100%;
    border-collapse: collapse;
}

.gpa-calc-wrapper .breakdown-table thead {
    background: var(--gpa-gradient);
}

.gpa-calc-wrapper .breakdown-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--gpa-white);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.gpa-calc-wrapper .breakdown-table tbody tr {
    border-bottom: 1px solid var(--gpa-border);
    transition: all 0.3s ease;
}

.gpa-calc-wrapper .breakdown-table tbody tr:hover {
    background: rgba(168,85,247,0.05);
}

.gpa-calc-wrapper .breakdown-table td {
    padding: 1rem;
    color: var(--gpa-gray);
    font-size: 0.95rem;
}

.gpa-calc-wrapper .breakdown-table td:first-child {
    font-weight: 600;
    color: var(--gpa-white);
}

.gpa-calc-wrapper .breakdown-table tfoot {
    background: var(--gpa-bg-card);
    font-weight: 700;
}

.gpa-calc-wrapper .breakdown-table tfoot td {
    color: var(--gpa-white);
    font-size: 1rem;
}

/* Tips Section */
.gpa-calc-wrapper .tips-section {
    margin-bottom: 2rem;
}

.gpa-calc-wrapper .tips-grid {
    display: grid;
    gap: 1rem;
}

.gpa-calc-wrapper .tip-item {
    display: flex;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--gpa-bg-input);
    border: 1px solid var(--gpa-border);
    border-radius: 0.75rem;
    border-left: 4px solid var(--gpa-purple);
}

.gpa-calc-wrapper .tip-item i {
    color: var(--gpa-purple);
    font-size: 1.25rem;
    margin-top: 0.125rem;
}

.gpa-calc-wrapper .tip-item p {
    color: var(--gpa-gray);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

.gpa-calc-wrapper .tip-item strong {
    color: var(--gpa-white);
}

/* Info Cards */
.gpa-calc-wrapper .info-card {
    background: var(--gpa-bg-card);
    border: 1px solid var(--gpa-border);
    border-radius: 1.5rem;
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.gpa-calc-wrapper .info-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gpa-white);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.gpa-calc-wrapper .info-title i {
    color: var(--gpa-purple);
}

/* Scale Tables */
.gpa-calc-wrapper .scales-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.gpa-calc-wrapper .scale-info h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gpa-white);
    margin-bottom: 1rem;
    text-align: center;
}

.gpa-calc-wrapper .scale-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--gpa-bg-input);
    border-radius: 0.75rem;
    overflow: hidden;
}

.gpa-calc-wrapper .scale-table thead {
    background: var(--gpa-gradient);
}

.gpa-calc-wrapper .scale-table th {
    padding: 0.875rem;
    text-align: left;
    font-weight: 600;
    color: var(--gpa-white);
    font-size: 0.85rem;
}

.gpa-calc-wrapper .scale-table td {
    padding: 0.75rem 0.875rem;
    border-bottom: 1px solid var(--gpa-border);
    color: var(--gpa-gray);
    font-size: 0.9rem;
}

.gpa-calc-wrapper .scale-table tbody tr:hover {
    background: rgba(168,85,247,0.05);
}

/* Calculation Steps */
.gpa-calc-wrapper .calculation-steps {
    display: grid;
    gap: 1.5rem;
}

.gpa-calc-wrapper .step-box {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--gpa-bg-input);
    border: 1px solid var(--gpa-border);
    border-radius: 0.75rem;
}

.gpa-calc-wrapper .step-num {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: var(--gpa-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gpa-white);
}

.gpa-calc-wrapper .step-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gpa-white);
    margin-bottom: 0.5rem;
}

.gpa-calc-wrapper .step-content p {
    color: var(--gpa-gray);
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

.gpa-calc-wrapper .formula {
    background: rgba(168,85,247,0.1);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    font-family: 'Courier New', monospace;
    color: var(--gpa-purple);
    font-size: 0.95rem;
}

/* Performance Levels */
.gpa-calc-wrapper .performance-levels {
    display: grid;
    gap: 1.25rem;
}

.gpa-calc-wrapper .level-box {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--gpa-bg-input);
    border: 1px solid var(--gpa-border);
    border-radius: 0.75rem;
    border-left: 4px solid;
}

.gpa-calc-wrapper .level-box.excellent { border-left-color: #22c55e; }
.gpa-calc-wrapper .level-box.good { border-left-color: #06b6d4; }
.gpa-calc-wrapper .level-box.average { border-left-color: #eab308; }
.gpa-calc-wrapper .level-box.below { border-left-color: #f97316; }
.gpa-calc-wrapper .level-box.poor { border-left-color: #ef4444; }

.gpa-calc-wrapper .level-icon {
    width: 56px;
    height: 56px;
    min-width: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--gpa-white);
}

.gpa-calc-wrapper .level-box.excellent .level-icon { background: #22c55e; }
.gpa-calc-wrapper .level-box.good .level-icon { background: #06b6d4; }
.gpa-calc-wrapper .level-box.average .level-icon { background: #eab308; }
.gpa-calc-wrapper .level-box.below .level-icon { background: #f97316; }
.gpa-calc-wrapper .level-box.poor .level-icon { background: #ef4444; }

.gpa-calc-wrapper .level-range {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gpa-white);
    margin-bottom: 0.25rem;
}

.gpa-calc-wrapper .level-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gpa-purple);
    margin-bottom: 0.75rem;
}

.gpa-calc-wrapper .level-box p {
    color: var(--gpa-gray);
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.6;
}

/* FAQ */
.gpa-calc-wrapper .faq-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.gpa-calc-wrapper .faq-item {
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--gpa-border);
}

.gpa-calc-wrapper .faq-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.gpa-calc-wrapper .faq-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gpa-white);
    margin-bottom: 0.75rem;
}

.gpa-calc-wrapper .faq-item p {
    color: var(--gpa-gray);
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0;
}

.gpa-calc-wrapper .faq-item strong {
    color: var(--gpa-white);
}

/* Responsive */
@media (max-width: 1024px) {
    .gpa-calc-wrapper .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gpa-calc-wrapper .scales-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .gpa-calc-wrapper {
        padding: 2rem 1rem;
    }
    
    .gpa-calc-wrapper .calc-title {
        font-size: 2rem;
    }
    
    .gpa-calc-wrapper .calc-card {
        padding: 1.5rem;
    }
    
    .gpa-calc-wrapper .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .gpa-calc-wrapper .course-inputs {
        grid-template-columns: 1fr;
    }
    
    .gpa-calc-wrapper .cgpa-grid {
        grid-template-columns: 1fr;
    }
    
    .gpa-calc-wrapper .controls {
        flex-direction: column;
    }
    
    .gpa-calc-wrapper .controls .btn {
        width: 100%;
    }
    
    .gpa-calc-wrapper .gpa-cards {
        grid-template-columns: 1fr;
    }
    
    .gpa-calc-wrapper .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .gpa-calc-wrapper .gpa-value {
        font-size: 3rem;
    }
}

@media (max-width: 480px) {
    .gpa-calc-wrapper .calc-title {
        font-size: 1.75rem;
    }
    
    .gpa-calc-wrapper .course-row {
        flex-wrap: wrap;
    }
    
    .gpa-calc-wrapper .btn-remove-course {
        width: 100%;
    }
    
    .gpa-calc-wrapper .gpa-value {
        font-size: 2.5rem;
    }
}