/* CGPA Calculator Styles */
:root {
    --primary-color: #FF6F00;
    --primary-light: rgba(255, 111, 0, 0.08);
    --primary-hover: #FF8F40;
    --card-hover-border: #ff4444; /* default red hover border */
    --card-hover-alt: var(--primary-color); /* alternate hover border */
    --border-color: #e0e0e0;
    --error-color: #ff4444;
    --error-hover: #ff6666;
    --bg-light: #ffffff;
    --text-primary: #2C2C2C;
    --text-secondary: #666666;
    --surface-hover: #f8f8f8;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* Floating Calculator Button */
.floating-calc-btn {
    position: fixed;
    top: 90px;
    right: 32px;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    font-size: 28px;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(255, 111, 0, 0.4);
    transition: all 0.3s ease;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-calc-btn:hover {
    background: var(--primary-hover);
    transform: scale(1.1);
    box-shadow: 0 6px 24px rgba(255, 111, 0, 0.5);
}

.floating-calc-btn:active {
    transform: scale(0.95);
}

/* Calculator Widget Popup */
.calculator-widget-popup {
    position: fixed;
    top: 170px;
    right: 32px;
    width: 340px;
    background: var(--card);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    z-index: 10000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: top right;
}

.calculator-widget-popup.hidden {
    opacity: 0;
    visibility: hidden;
    transform: scale(0.8) translateY(-20px);
}

.calc-widget-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 2px solid var(--border);
}

.calc-widget-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
}

.close-calc-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: transparent;
    border: none;
    font-size: 28px;
    line-height: 1;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-calc-btn:hover {
    background: var(--surface);
    color: var(--error-color);
}

.calculator-widget-popup .calculator {
    padding: 20px;
}

.calculator-widget-popup .calc-display {
    padding: 16px;
    font-size: 24px;
    margin-bottom: 12px;
}

.calculator-widget-popup .calc-buttons {
    gap: 8px;
}

.calculator-widget-popup .calc-btn {
    padding: 16px;
    font-size: 16px;
}

.calculator-widget-popup .calc-equals {
    font-size: 20px;
}

/* Dark mode */
[data-theme="dark"] .floating-calc-btn {
    background: var(--accent);
    box-shadow: 0 4px 16px rgba(255, 111, 0, 0.5);
}

[data-theme="dark"] .calculator-widget-popup {
    background: var(--card);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .calc-widget-header {
    border-bottom-color: var(--border);
}

[data-theme="dark"] {
    --bg-light: #1E1E1E;
    --text-primary: #E0E0E0;
    --text-secondary: #A0A0A0;
    --border-color: #404040;
    --card-hover-border: #ff6666; /* slightly lighter red in dark mode */
    --card-hover-alt: #FF8F40; /* accent in dark mode */
    --surface-hover: #2A2A2A;
    --primary-light: rgba(255, 111, 0, 0.15);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Dark mode specific overrides */
[data-theme="dark"] .info-card {
    background: var(--card);
    border-color: var(--accent);
    color: var(--text);
    box-shadow: var(--shadow);
}

[data-theme="dark"] .table-container {
    background: var(--card);
    box-shadow: var(--shadow);
}

[data-theme="dark"] .input {
    background: var(--input-bg);
    border-color: var(--border);
    color: var(--text);
}

[data-theme="dark"] .input:hover {
    border-color: var(--accent);
    background: var(--surface);
}

[data-theme="dark"] .input:focus {
    border-color: var(--accent);
    box-shadow: var(--focus-ring);
}

[data-theme="dark"] .grade-item {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--accent);
}

[data-theme="dark"] .credit-btn {
    background: var(--surface);
    border-color: var(--accent);
    color: var(--accent);
}

[data-theme="dark"] .credit-btn:hover {
    background: var(--accent);
    color: #F3F0E8;
}

[data-theme="dark"] .btn {
    background: var(--surface);
    color: var(--accent);
}

[data-theme="dark"] .btn:hover {
    background: var(--accent);
    color: #F3F0E8;
}

[data-theme="dark"] .btn.primary {
    background: var(--accent);
    color: #F3F0E8;
    border-color: var(--accent);
}

[data-theme="dark"] .btn.primary:hover {
    background: var(--accent-600);
}

[data-theme="dark"] .save-indicator {
    background: var(--accent);
    color: #F3F0E8;
    box-shadow: 0 4px 12px rgba(255, 143, 64, 0.3);
}

/* Card and Container */
.cgpa-container {
    padding: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

/* Add subtle border to main CGPA card */
.cgpa-container > .card,
section.card {
    border: 1px solid rgba(255, 111, 0, 0.15);
}

.cgpa-header {
    text-align: center;
    margin-bottom: 40px;
    padding: 24px 0;
    position: relative;
}

.cgpa-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.cgpa-header h2 {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

/* Academic Standing Section */
.previous-record,
.academic-standing {
    margin-bottom: 48px;
    background: var(--bg-light);
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(255, 111, 0, 0.12);
}

.previous-record h3,
.academic-standing h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
    position: relative;
    padding-bottom: 12px;
}

.previous-record h3::after,
.academic-standing h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

.section-description {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 20px;
    font-style: italic;
}

.previous-record-inputs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.standing-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.info-card {
    background: var(--bg-light);
    padding: 24px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.18s ease;
}

/* default hover uses configurable variable */
.info-card:hover {
    border-color: var(--card-hover-border);
    box-shadow: var(--shadow);
}

/* utility classes to switch hover border color */
.card-hover-red:hover { /* explicit red */
    border-color: var(--card-hover-border) !important;
}

.card-hover-accent:hover { /* use primary accent */
    border-color: var(--card-hover-alt) !important;
}

.info-card h4 {
    font-size: 15px;
    color: var(--text-secondary);
    margin: 0 0 12px 0;
    font-weight: 500;
}

.result-display {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
}

/* Course Sections */
.current-trimester,
.retake-courses {
    background: var(--bg-light);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 48px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(255, 111, 0, 0.12);
}

.current-trimester h3,
.retake-courses h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
    position: relative;
    padding-bottom: 12px;
}

.current-trimester h3::after,
.retake-courses h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

/* Table Container */
.courses-table {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 16px;
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

/* Force proper box-sizing for all elements */
* {
    box-sizing: border-box;
}

.courses-table * {
    max-width: 100%;
}

th {
    padding: 14px 16px;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 14px;
    text-align: left;
    border-bottom: 2px solid var(--border-color);
    background: var(--surface-hover);
}

td {
    padding: 16px;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-light);
    transition: all 0.2s ease;
}

tr:hover td {
    background: var(--surface-hover);
}

[data-theme="dark"] .cgpa-table th {
    color: var(--accent);
    border-bottom-color: var(--border);
}

[data-theme="dark"] .cgpa-table td {
    background: var(--card);
}

[data-theme="dark"] .cgpa-table tr:hover td {
    background: var(--surface);
}

/* Table Column Widths */
.course-col { width: 45%; }
.credit-col { width: 20%; }
.grade-col { width: 25%; }
.action-col { width: 10%; text-align: center; }

/* Course Inputs Container */
.course-inputs {
    display: grid;
    gap: 8px;
}

/* Form Controls */
.input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    background: var(--bg-light);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.input:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-light);
}

.input:hover {
    border-color: var(--primary-color);
    background-color: var(--surface-hover);
}

.input.invalid {
    border-color: var(--error-color);
    background-color: rgba(255, 68, 68, 0.05);
}

.input.invalid:focus {
    box-shadow: 0 0 0 3px rgba(255, 68, 68, 0.15);
}

/* Select Inputs */
select.input {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M6 6L0 0h12z' fill='%23FF6F00'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
    color: var(--text);
}

/* Quick Actions */
.quick-actions {
    margin-bottom: 24px;
}

.quick-credits {
    background: var(--card-bg);
    padding: 16px;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.quick-credits h4 {
    margin: 0;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 14px;
}

/* Button Styles */
.btn {
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--border-color);
    background: var(--bg-light);
    color: var(--text-primary);
    cursor: pointer;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 100px;
    transition: all 0.2s ease;
}

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

.calculate-btn {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.calculate-btn:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
}

.reset-btn {
    border-color: var(--error-color);
    color: var(--error-color);
}

.reset-btn:hover {
    background: var(--error-color);
    color: white;
}

.add-btn {
    width: 100%;
    justify-content: center;
    background: var(--surface-hover);
    border: none;
    border-top: 1px solid var(--border-color);
    border-radius: 0;
    color: var(--primary-color);
    font-weight: 500;
}

.add-btn:hover {
    background: var(--primary-light);
}

.remove-btn {
    width: 32px;
    height: 32px;
    min-width: unset;
    padding: 0;
    font-size: 18px;
    border-radius: 6px;
    color: var(--error-color);
    border: 1px solid var(--error-color);
    background: transparent;
}

.remove-btn:hover {
    background: var(--error-color);
    color: white;
}

/* Calculator Controls */
.calculator-controls {
    display: flex;
    justify-content: flex-end;
    gap: 16px;
    margin-top: 32px;
    padding: 24px;
    background: var(--bg-light);
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(255, 111, 0, 0.12);
}

.calculator-controls .btn {
    min-width: 120px;
    font-weight: 500;
}

/* Loading Indicator */
.loading-indicator {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--primary-color);
    color: white;
    padding: 12px 24px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: var(--shadow);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.loading-indicator.show {
    opacity: 1;
}

/* Grade Guide */
.grade-guide {
    background: var(--card-bg);
    padding: 20px;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    color: var(--text-primary);
    margin-top: 32px;
}

.grade-guide h3 {
    margin: 0 0 16px;
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 500;
}

.grade-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
}

.grade-item {
    background: var(--input-bg);
    padding: 12px;
    border-radius: 4px;
    text-align: center;
    font-size: 13px;
    color: var(--text-primary);
    border: 1px solid var(--input-border);
}

.grade-item:hover {
    border-color: var(--accent);
}

.grade-item strong {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    display: block;
    margin-bottom: 2px;
}

.grade-item small {
    color: var(--text-secondary);
    display: block;
    margin: 2px 0;
    font-size: 12px;
}

/* Responsive Design */
@media (max-width: 1400px) {
    .cgpa-layout {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    /* Force proper container behavior */
    body {
        overflow-x: hidden !important;
    }
    
    .container {
        max-width: 100% !important;
        overflow-x: hidden !important;
    }
    
    .cgpa-container {
        padding: 12px;
        max-width: 100% !important;
        overflow-x: hidden !important;
    }
    
    section.card {
        max-width: 100% !important;
        overflow-x: hidden !important;
    }
    
    .cgpa-header {
        margin-bottom: 24px;
        padding: 16px 0;
    }
    
    .cgpa-header h2 {
        font-size: 22px;
    }
    
    .floating-calc-btn {
        top: 80px;
        right: 16px;
        width: 56px;
        height: 56px;
        font-size: 24px;
    }
    
    .calculator-widget-popup {
        top: 145px;
        right: 16px;
        left: 16px;
        width: auto;
        max-width: calc(100vw - 32px) !important;
    }

    .previous-record-inputs {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .standing-info {
        grid-template-columns: 1fr !important;
        gap: 10px;
    }

    .academic-standing,
    .current-trimester,
    .retake-courses,
    .calculator-controls,
    .previous-record {
        padding: 16px;
        margin-bottom: 24px;
        border-radius: 8px;
        max-width: 100% !important;
        overflow-x: hidden !important;
    }
    
    .previous-record h3,
    .academic-standing h3,
    .current-trimester h3,
    .retake-courses h3 {
        font-size: 18px;
        margin-bottom: 16px;
    }

    /* Transform table into card-based layout on mobile */
    .courses-table {
        border-radius: 8px;
        margin-bottom: 16px;
        border: none;
        max-width: 100% !important;
        overflow: visible !important;
    }

    #currentCoursesTable,
    #retakeCoursesTable {
        display: block !important;
        width: 100% !important;
        min-width: 0 !important;
        max-width: 100% !important;
        overflow: visible !important;
    }
    
    #currentCoursesTable thead,
    #retakeCoursesTable thead {
        display: none !important; /* Hide table headers on mobile */
    }
    
    #currentCoursesTable tbody,
    #retakeCoursesTable tbody {
        display: block !important;
        width: 100% !important;
        max-width: 100% !important;
    }
    
    #currentCoursesTable tr,
    #retakeCoursesTable tr {
        display: block !important;
        margin-bottom: 12px;
        background: var(--bg-light);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        padding: 12px;
        transition: all 0.2s ease;
        width: 100% !important;
        max-width: 100% !important;
    }
    
    #currentCoursesTable tr:hover,
    #retakeCoursesTable tr:hover {
        border-color: var(--primary-color);
        box-shadow: 0 2px 8px rgba(255, 111, 0, 0.1);
    }
    
    #currentCoursesTable td,
    #retakeCoursesTable td {
        display: block !important;
        width: 100% !important;
        max-width: 100% !important;
        padding: 8px 0 !important;
        border: none !important;
        text-align: left !important;
        background: transparent !important;
        white-space: normal !important;
    }
    
    /* Add labels before each input on mobile */
    #currentCoursesTable td:nth-child(1)::before,
    #retakeCoursesTable td:nth-child(1)::before {
        content: "Course Name";
        display: block;
        font-weight: 600;
        font-size: 12px;
        color: var(--text-secondary);
        margin-bottom: 6px;
    }
    
    #currentCoursesTable td:nth-child(2)::before,
    #retakeCoursesTable td:nth-child(2)::before {
        content: "Credit Hours";
        display: block;
        font-weight: 600;
        font-size: 12px;
        color: var(--text-secondary);
        margin-bottom: 6px;
    }
    
    #currentCoursesTable td:nth-child(3)::before {
        content: "Expected Grade";
        display: block;
        font-weight: 600;
        font-size: 12px;
        color: var(--text-secondary);
        margin-bottom: 6px;
    }
    
    /* For retake table */
    #retakeCoursesTable td:nth-child(3)::before {
        content: "Old Grade";
    }
    
    #retakeCoursesTable td:nth-child(4)::before {
        content: "New Grade";
    }
    
    /* Remove button gets special treatment */
    #currentCoursesTable td:last-child,
    #retakeCoursesTable td:last-child {
        padding-top: 12px !important;
        display: flex !important;
        justify-content: flex-end;
    }
    
    #currentCoursesTable td:last-child::before,
    #retakeCoursesTable td:last-child::before {
        display: none !important;
    }
    
    /* Adjust input sizes for mobile */
    .input {
        font-size: 14px !important;
        padding: 10px 12px !important;
        min-height: 44px;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }
    
    select.input {
        background-position: right 12px center;
        padding-right: 36px !important;
    }

    .calculator-controls {
        flex-direction: column;
        gap: 12px;
        padding: 16px;
    }

    .calculator-controls .btn {
        width: 100% !important;
        height: 48px;
        font-size: 15px;
    }
    
    .add-btn {
        font-size: 14px;
        padding: 14px;
        border-radius: 8px;
        width: 100% !important;
    }
    
    .remove-btn {
        width: 40px !important;
        height: 40px;
        font-size: 20px;
        flex-shrink: 0;
    }

    .loading-indicator {
        left: 16px;
        right: 16px;
        bottom: 16px;
        text-align: center;
        justify-content: center;
    }

    /* revert header and sizes to default mobile adjustments elsewhere */
    
    .info-card {
        padding: 12px 12px;
    }
    
    .info-card h4 {
        font-size: 13px;
        margin-bottom: 8px;
    }
    
    .result-display {
        font-size: 22px;
        line-height: 1.1;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    .cgpa-container {
        padding: 8px !important;
    }
    
    .cgpa-header h2 {
        font-size: 20px;
    }
    
    .previous-record,
    .academic-standing,
    .current-trimester,
    .retake-courses,
    .calculator-controls {
        padding: 12px !important;
        margin-bottom: 16px;
    }
    
    .previous-record h3,
    .academic-standing h3,
    .current-trimester h3,
    .retake-courses h3 {
        font-size: 16px;
    }
    
    #currentCoursesTable tr,
    #retakeCoursesTable tr {
        padding: 10px !important;
    }
    
    #currentCoursesTable td,
    #retakeCoursesTable td {
        padding: 6px 0 !important;
    }
    
    .input {
        font-size: 13px !important;
        padding: 9px 10px !important;
        min-height: 42px;
    }
    
    .info-card {
        padding: 10px 12px;
    }
    
    .result-display {
        font-size: 20px;
    }
    
    .info-card h4 {
        font-size: 13px;
    }
    
    select.input {
        background-position: right 10px center;
        padding-right: 32px !important;
    }
    
    .remove-btn {
        width: 38px !important;
        height: 38px;
    }

    /* revert to previous compact sizing handled above */
}



/* Dark Mode Enhancements */
[data-theme="dark"] .previous-record,
[data-theme="dark"] .academic-standing,
[data-theme="dark"] .current-trimester,
[data-theme="dark"] .retake-courses,
[data-theme="dark"] .calculator-controls {
    background: var(--bg-light);
}

[data-theme="dark"] .courses-table {
    background: var(--bg-light);
    border-color: var(--border-color);
}

[data-theme="dark"] th {
    background: var(--surface-hover);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .input {
    background: var(--bg-light);
    border-color: var(--border-color);
}

[data-theme="dark"] .input:hover {
    background-color: var(--surface-hover);
}

[data-theme="dark"] .add-btn {
    background: var(--surface-hover);
    border-top-color: var(--border-color);
}