/* Modern GPA Calculator CSS - Dalhousie University Theme */

/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

:root {
    /* Dalhousie University Colors */
    --dal-blue: #00205B;
    --dal-blue-light: #0A3B82;
    --dal-blue-dark: #001845;
    --dal-green: #008056;
    --dal-green-light: #009B69;
    --dal-green-dark: #006845;
    
    /* Grading Colors */
    --excellent: #2ECC71;
    --good: #3498DB;
    --satisfactory: #F39C12;
    --marginal: #E67E22;
    --fail: #E74C3C;
    
    /* UI Colors */
    --bg-color: #F5F7FA;
    --card-bg: #FFFFFF;
    --text-color: #2C3E50;
    --text-light: #7F8C8D;
    --border-color: #E5E7EB;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    font-size: 16px;
}

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

/* Common Elements */
.card {
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 25px;
    transition: all 0.3s ease;
    overflow: hidden;
}

.card-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(to right, var(--dal-blue), var(--dal-blue-light));
}

.card-header h2 {
    color: white;
    font-size: 1.4rem;
    margin: 0;
    display: flex;
    align-items: center;
    font-weight: 600;
}

.card-header h2 i {
    margin-right: 10px;
    font-size: 1.2rem;
}

/* Header Styles */
header {
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--dal-blue), var(--dal-blue-light));
    padding: 30px;
    border-radius: 12px;
    color: white;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
}

.logo {
    font-size: 2.5rem;
    margin-right: 20px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
}

.header-text h1 {
    font-size: 2.2rem;
    margin-bottom: 5px;
    font-weight: 700;
}

.header-text p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Calculator Layout */
.calculator-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin-bottom: 25px;
}

.courses-container, .results-container {
    display: flex;
    flex-direction: column;
}

/* Course Header and Entries */
.course-header {
    display: grid;
    grid-template-columns: 1.5fr 1fr 0.8fr 0.8fr 0.3fr;
    gap: 15px;
    padding: 15px 20px;
    font-weight: 600;
    color: var(--dal-blue);
    border-bottom: 1px solid var(--border-color);
    background-color: #F8FAFC;
}

#courses-list {
    padding: 10px 20px;
}

.course {
    display: grid;
    grid-template-columns: 1.5fr 1fr 0.8fr 0.8fr 0.3fr;
    gap: 15px;
    padding: 12px 0;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.course:last-child {
    border-bottom: none;
}

.course input, .course select {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.2s ease;
}

.course input:focus, .course select:focus {
    border-color: var(--dal-blue);
    box-shadow: 0 0 0 3px rgba(0, 32, 91, 0.1);
    outline: none;
}

.course-name {
    font-weight: 500;
    width: 100%;
}

.numeric-grade {
    text-align: center;
    width: 100%;
}

.letter-grade {
    text-align: center;
    font-weight: 700;
    padding: 10px;
    background-color: #F8FAFC;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    position: relative;
}

.letter-grade.excellent {
    background-color: rgba(46, 204, 113, 0.15);
    border-color: rgba(46, 204, 113, 0.3);
    color: var(--excellent);
}

.letter-grade.good {
    background-color: rgba(52, 152, 219, 0.15);
    border-color: rgba(52, 152, 219, 0.3);
    color: var(--good);
}

.letter-grade.satisfactory {
    background-color: rgba(243, 156, 18, 0.15);
    border-color: rgba(243, 156, 18, 0.3);
    color: var(--satisfactory);
}

.letter-grade.marginal {
    background-color: rgba(230, 126, 34, 0.15);
    border-color: rgba(230, 126, 34, 0.3);
    color: var(--marginal);
}

.letter-grade.fail {
    background-color: rgba(231, 76, 60, 0.15);
    border-color: rgba(231, 76, 60, 0.3);
    color: var(--fail);
}

.remove-course {
    background-color: rgba(231, 76, 60, 0.1);
    color: var(--fail);
    border: none;
    border-radius: 6px;
    width: 32px;
    height: 32px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.remove-course:hover {
    background-color: var(--fail);
    color: white;
}

.course-actions {
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
    background-color: #F8FAFC;
}

/* Buttons */
.btn {
    font-weight: 600;
    border: none;
    padding: 12px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn i {
    margin-right: 8px;
}

.btn-primary {
    background-color: var(--dal-blue);
    color: white;
}

.btn-primary:hover {
    background-color: var(--dal-blue-light);
}

.btn-success {
    background-color: var(--dal-green);
    color: white;
}

.btn-success:hover {
    background-color: var(--dal-green-light);
}

.btn-secondary {
    background-color: #7F8C8D;
    color: white;
}

.btn-secondary:hover {
    background-color: #6C7A7D;
}

/* Results Section */
.results-content {
    padding: 20px;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 1.1rem;
}

.gpa-result {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--dal-blue);
    margin: 15px 0;
    border-bottom: none;
}

#gpa {
    transition: all 0.3s ease;
}

#gpa.highlight {
    color: var(--dal-green);
    transform: scale(1.1);
}

.gpa-scale {
    margin: 20px 0;
}

.scale {
    margin-bottom: 30px;
}

.scale-bar {
    height: 10px;
    background: linear-gradient(to right, 
        var(--fail) 0%, 
        var(--fail) 23%, 
        var(--marginal) 23%, 
        var(--marginal) 40%, 
        var(--satisfactory) 40%, 
        var(--satisfactory) 63%, 
        var(--good) 63%, 
        var(--good) 86%, 
        var(--excellent) 86%, 
        var(--excellent) 100%);
    border-radius: 5px;
    position: relative;
    margin-bottom: 8px;
}

.indicator {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--dal-blue);
    position: absolute;
    top: -5px;
    transform: translateX(-50%);
    border: 3px solid white;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.indicator.excellent {
    background-color: var(--excellent);
}

.indicator.good {
    background-color: var(--good);
}

.indicator.satisfactory {
    background-color: var(--satisfactory);
}

.indicator.marginal {
    background-color: var(--marginal);
}

.indicator.fail {
    background-color: var(--fail);
}

.scale-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-light);
}

.action-buttons {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 20px;
}

.action-buttons .btn {
    width: 100%;
    padding: 14px;
}

/* Grade Chart Styles */
.grade-table-container {
    padding: 20px;
    overflow-x: auto;
}

.grade-table {
    width: 100%;
    border-collapse: collapse;
}

.grade-table th, .grade-table td {
    padding: 12px 15px;
    text-align: left;
    border: 1px solid var(--border-color);
}

.grade-table th {
    background-color: #F8FAFC;
    font-weight: 600;
    white-space: nowrap;
}

.grade-table td:first-child {
    font-weight: 700;
}

/* Add grade-specific color indicators */
.grade-table tr.excellent td:first-child {
    border-left: 4px solid var(--excellent);
}

.grade-table tr.good td:first-child {
    border-left: 4px solid var(--good);
}

.grade-table tr.satisfactory td:first-child {
    border-left: 4px solid var(--satisfactory);
}

.grade-table tr.marginal td:first-child {
    border-left: 4px solid var(--marginal);
}

.grade-table tr.fail td:first-child {
    border-left: 4px solid var(--fail);
}

.other-grades {
    padding: 0 20px 20px;
}

.other-grades h3 {
    color: var(--dal-blue);
    margin-bottom: 15px;
    font-size: 1.2rem;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.notation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
}

.notation-item {
    background-color: #F8FAFC;
    padding: 12px 15px;
    border-radius: 6px;
    border-left: 3px solid var(--dal-blue);
    font-size: 0.95rem;
}

.notation-item span {
    font-weight: 600;
    display: block;
    margin-bottom: 4px;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 30px;
    padding: 20px;
    color: var(--text-light);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
}

footer p {
    margin-bottom: 8px;
}

/* Animations */
.fade-in {
    animation: fadeIn 0.3s ease-in-out forwards;
}

.fade-out {
    animation: fadeOut 0.3s ease-in-out forwards;
}

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

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

/* Responsive Design */
@media (max-width: 992px) {
    .calculator-section {
        grid-template-columns: 1fr;
    }
    
    header {
        flex-direction: column;
        text-align: center;
    }
    
    .logo {
        margin: 0 0 15px 0;
    }
}

@media (max-width: 768px) {
    .course-header, .course {
        grid-template-columns: 1fr 1fr 0.8fr 0.5fr 0.3fr;
        font-size: 0.9rem;
    }
    
    .header-text h1 {
        font-size: 1.8rem;
    }
    
    .result-item {
        font-size: 1rem;
    }
    
    .gpa-result {
        font-size: 1.3rem;
    }
}

@media (max-width: 576px) {
    .course-header {
        display: none;
    }
    
    .course {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
        gap: 10px;
        padding: 15px 0;
        position: relative;
    }
    
    .course input, .course select, .course .letter-grade {
        width: 100%;
    }
    
    .course-name::before {
        content: 'Course:';
        display: block;
        font-size: 0.8rem;
        color: var(--text-light);
        margin-bottom: 4px;
    }
    
    .numeric-grade::before {
        content: 'Grade (%):';
        display: block;
        font-size: 0.8rem;
        color: var(--text-light);
        margin-bottom: 4px;
    }
    
    .credit-value::before {
        content: 'Credits:';
        display: block;
        font-size: 0.8rem;
        color: var(--text-light);
        margin-bottom: 4px;
    }
    
    .letter-grade::before {
        content: 'Letter Grade:';
        display: block;
        font-size: 0.8rem;
        color: var(--text-light);
        margin-bottom: 4px;
        text-align: left;
    }
    
    .remove-course {
        position: absolute;
        top: 15px;
        right: 0;
    }
}