/* === CSS VARIABLES === */
:root {
    /* Light theme */
    --primary: #0D47A1;
    --primary-hover: #1565C0;
    --primary-active: #0A3D91;
    --secondary: #1976D2;
    --accent: #4CAF50;

    --bg-main: #F8FAFC;
    --bg-card: #FFFFFF;
    --bg-surface: #F1F5F9;
    --bg-header: linear-gradient(135deg, #0D47A1 0%, #1976D2 100%);

    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-muted: #94A3B8;
    --text-inverse: #FFFFFF;

    --border: #E2E8F0;
    --border-hover: #CBD5E1;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

.dark-theme {
    --primary: #3B82F6;
    --primary-hover: #2563EB;
    --primary-active: #1D4ED8;
    --secondary: #60A5FA;
    --accent: #10B981;

    --bg-main: #0F172A;
    --bg-card: #1E293B;
    --bg-surface: #334155;
    --bg-header: linear-gradient(135deg, #1E293B 0%, #334155 100%);

    --text-primary: #F1F5F9;
    --text-secondary: #CBD5E1;
    --text-muted: #94A3B8;
    --text-inverse: #0F172A;

    --border: #334155;
    --border-hover: #475569;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}

/* === RESET & BASE === */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-main);
    overscroll-behavior: none;
}

/* === LAYOUT === */
.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.header {
    background: var(--bg-header);
    color: var(--text-inverse);
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    z-index: 10;
    flex-shrink: 0;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    color: white;
    letter-spacing: -0.025em;
}

.header-controls {
    display: flex;
    gap: 12px;
    align-items: center;
}

.main-content {
    flex: 1;
    display: flex;
    overflow: hidden;
    min-height: 0; /* Important for flex children to shrink */
    position: relative;
}

.board {
    flex: 1;
    display: flex;
    overflow-x: auto;
    overflow-y: auto;
    background: var(--bg-main);
    position: relative;
    gap: 0;
    padding-left: 8px;
    padding-right: 8px;
    min-height: 0; /* Important for flex children to shrink */
    margin-left: 320px;
    transition: margin-left 0.3s ease;
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
    white-space: nowrap;
    min-height: 36px;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-primary:active {
    background: var(--primary-active);
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg-card);
    color: white;
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-surface);
    border-color: var(--border-hover);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.75rem;
    min-height: 28px;
}

/* Dropdown select styling for controls */
.select-control {
    padding: 6px 12px;
    font-size: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-primary);
    cursor: pointer;
    width: 230px;
}

/* === SIDEBAR === */
.sidebar {
    width: 320px;
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex-shrink: 0;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    transition: transform 0.3s ease;
    z-index: 5;
}

.sidebar.collapsed {
    transform: translateX(calc(-100% + 20px));
}

.sidebar-toggle {
    position: absolute;
    top: 16px; /* Matches the padding of .sidebar-header */
    right: 0;
    width: 20px;
    height: 40px;
    background: var(--primary);
    color: var(--text-inverse);
    border: none;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    cursor: pointer;
}

.sidebar.collapsed .sidebar-toggle {
    transform: rotate(180deg);
}

.sidebar.collapsed ~ .board {
    margin-left: 20px;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.sidebar-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.sidebar-content {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    min-height: 0;
}

.control-group {
    margin-bottom: 24px;
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-row {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.control-row .btn {
    flex: 1;
    font-size: 0.8rem;
}

.control-row .select-control {
    flex: 1;
    font-size: 0.8rem;
}

.select-control {
    flex-grow: 1;
    font-size: 0.8rem;
}

/* === SEMESTER CONTAINER - FIXED FOR SCROLLING === */
.semester-container {
    width: 300px;
    margin: 20px;
    flex-shrink: 0;
}

.semester {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    /* Allow dropdowns to extend outside the semester card */
    overflow: visible;
    height: calc(100vh - 140px); /* Fixed height based on viewport */
    display: flex;
    flex-direction: column;
    min-height: 300px;
}

.semester-header {
    background: var(--accent);
    color: var(--text-inverse);
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 600;
    flex-shrink: 0; /* Prevent header from shrinking */
}

.semester-header input {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: var(--text-inverse);
    font-weight: 600;
    font-size: 1rem;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    width: 150px;
}

.semester-header input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.semester-actions {
    display: flex;
    gap: 8px;
}

.semester-action-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s ease;
}

.semester-action-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* === SCROLLABLE COURSE CONTAINER - KEY FIX === */
.semester-courses {
    flex: 1; /* Take remaining space */
    padding: 16px;
    overflow-y: auto; /* Enable vertical scrolling */
    overflow-x: hidden;
    min-height: 0; /* Allow shrinking below content size */
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* === SEMESTER TOTALS STYLING === */
.semester-totals {
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
    padding: 12px 16px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    flex-shrink: 0; /* Prevent totals from shrinking */
}

.semester-totals-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 16px;
}

.semester-total-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
}

.semester-total-label {
    font-weight: 500;
    color: var(--text-primary);
}

.semester-total-value {
    font-weight: 600;
    color: var(--primary);
    background: var(--bg-card);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

/* === COURSE CARDS === */
.course-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    overflow: visible;
    transition: all 0.15s ease;
    flex-shrink: 0; /* Prevent individual cards from shrinking */
}

.course-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-sm);
}

.course-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-surface);
}

.course-code {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.course-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* === GRADE STYLING === */
.grade {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.15s ease;
    min-width: 32px;
    text-align: center;
}

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

.grade:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.2);
}

.grade option {
    background: var(--bg-card);
    color: var(--text-primary);
}

.course-delete {
    width: 20px;
    height: 20px;
    border: none;
    background: none;
    cursor: pointer;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: all 0.15s ease;
}

.course-delete:hover {
    background: #FEE2E2;
    color: #DC2626;
}

.course-body {
    padding: 12px 16px;
}

.course-name {
    font-size: 0.875rem;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 500;
    line-height: 1.3;
}

.course-details {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.course-meta {
    display: flex;
    gap: 12px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.course-meta span {
    background: var(--bg-surface);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

/* === ADD COURSE === */
.add-course {
    padding: 12px;
    text-align: center;
    color: var(--primary);
    cursor: pointer;
    border-top: 1px dashed var(--border);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.15s ease;
    flex-shrink: 0; /* Keep add button visible */
    background: var(--bg-card);
}

.add-course:hover {
    background: var(--bg-surface);
    color: var(--primary-hover);
}

.add-course-form {
    padding: 16px;
    border-top: 1px solid var(--border);
    background: var(--bg-surface);
}

.add-course-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    margin-bottom: 12px;
    background: var(--bg-card);
    color: var(--text-primary);
}

.add-course-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 71, 161, 0.1);
}

.add-course-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

/* === IMPORT DROPDOWN === */
.import-container {
    position: relative;
}

.import-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 400px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 20px;
    z-index: 50;
    display: none;
}

.import-dropdown.active {
    display: block;
}

.import-title {
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.import-instructions {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.import-instructions ol {
    margin: 8px 0;
    padding-left: 20px;
}

.import-instructions li {
    margin: 4px 0;
}

.import-controls {
    display: flex;
    gap: 12px;
    align-items: center;
}

.import-file {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    max-width: 200px; /* Limit width to prevent overflow */
}

/* === MODALS === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 90vw;
    max-height: 90vh;
    overflow: auto;
}

/* === FOOTER === */
.footer {
    background: var(--bg-header);
    color: white;
    padding: 16px 24px;
    text-align: center;
    font-size: 0.875rem;
    opacity: 0.9;
    flex-shrink: 0;
}

/* === UTILITIES === */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .sidebar {
        width: 280px;
    }

    .semester-container {
        width: 280px;
    }

    .import-dropdown {
        width: 320px;
    }

    .header {
        padding: 0 16px;
    }

    .header-title {
        font-size: 1.25rem;
    }
}

/* === ANIMATIONS === */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-2px); }
    20%, 40%, 60%, 80% { transform: translateX(2px); }
}

.shake {
    animation: shake 0.5s ease-in-out;
}

/* === MODERN SCROLLBAR STYLING === */
.semester-courses::-webkit-scrollbar,
.sidebar-content::-webkit-scrollbar,
.subcontainer_semester .semester::-webkit-scrollbar,
.board::-webkit-scrollbar{
    width: 6px;
}

.semester-courses::-webkit-scrollbar-track,
.sidebar-content::-webkit-scrollbar-track,
.subcontainer_semester .semester::-webkit-scrollbar-track,
.board::-webkit-scrollbar-track{
    background: transparent;
}

.semester-courses::-webkit-scrollbar-thumb,
.sidebar-content::-webkit-scrollbar-thumb,
.subcontainer_semester .semester::-webkit-scrollbar-thumb,
.board::-webkit-scrollbar-thumb{
    background: linear-gradient(180deg, #4facfe 0%, #00f2fe 100%);
    border-radius: 3px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.semester-courses::-webkit-scrollbar-thumb:hover,
.sidebar-content::-webkit-scrollbar-thumb:hover,
.subcontainer_semester .semester::-webkit-scrollbar-thumb:hover,
.board::-webkit-scrollbar-thumb{
    background: linear-gradient(180deg, #00b4d8 0%, #0077b6 100%);
}

/* Firefox scrollbar */
.semester-courses,
.sidebar-content,
.subcontainer_semester .semester,
.board{
    scrollbar-width: thin;
    scrollbar-color: #4facfe transparent;
}
/* === LEGACY COMPATIBILITY - FIXED FOR SCROLLING === */

/* Each semester column - FIXED HEIGHT AND FLEX LAYOUT */
.container_semester {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin: 16px 8px;
    flex: 0 0 320px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    height: calc(100vh - 140px); /* Fixed height for proper scrolling */
}

/* Placeholder container for adding new semesters inline */
.add-semester-ghost {
    margin: 16px 8px;
    flex: 0 0 320px;
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    height: calc(100vh - 140px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.add-semester-ghost:hover {
    background: var(--bg-surface);
}

/* Top bar showing total credits */
.container_semester .total_credit {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    background: var(--primary);
    color: var(--text-inverse);
    font-weight: 600;
    flex-shrink: 0;
}

.container_semester .total_credit_line {
    flex: 1;
    height: 1px;
    background: rgba(255, 255, 255, 0.3);
}

.container_semester .total_credit_text {
    padding: 0 8px;
}

/* Body container - PROPER FLEX LAYOUT */
.subcontainer_semester {
    display: flex;
    flex-direction: column;
    padding: 12px;
    gap: 12px;
    flex: 1; /* Take remaining space */
    overflow: hidden; /* Hide overflow from this container */
    min-height: 0; /* Allow shrinking */
}

/* Date row with term label and action icons */
.subcontainer_semester .date {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 600;
    color: var(--text-primary);
    flex-shrink: 0;
}

.subcontainer_semester .date p {
    margin: 0;
}

/* Icons container */
.subcontainer_semester .icons {
    display: flex;
    gap: 8px;
}

.subcontainer_semester .semester_drag,
.subcontainer_semester .semester_date_edit,
.subcontainer_semester .delete_semester {
    width: 20px;
    height: 20px;
    border: none;
    background: transparent;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.15s ease;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
}

/* Default icons for light theme */
.subcontainer_semester .delete_semester {
    background-image: url('./assets/closedb.png');
}
.subcontainer_semester .semester_drag {
    background-image: url('./assets/dragb.png');
}
.subcontainer_semester .semester_date_edit {
    background-image: url('./assets/editb.png');
}

/* Icon overrides for dark theme */
.dark-theme .subcontainer_semester .delete_semester {
    background-image: url('./assets/closedw.png');
}
.dark-theme .subcontainer_semester .semester_drag {
    background-image: url('./assets/dragw.png');
}
.dark-theme .subcontainer_semester .semester_date_edit {
    background-image: url('./assets/editw.png');
}

.subcontainer_semester .semester_drag:hover,
.subcontainer_semester .semester_date_edit:hover,
.subcontainer_semester .delete_semester:hover {
    opacity: 1;
}

/* Course list container - THE KEY FIX */
.subcontainer_semester .semester {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1; /* Take remaining space in subcontainer */
    overflow-y: auto; /* Enable scrolling */
    overflow-x: hidden;
    min-height: 0; /* Allow shrinking below content size */
    padding-right: 0; /* Space for scrollbar */
}

/* Individual course card - FIXED 3-COLUMN LAYOUT WITH LEFT 2-ROW STRUCTURE */
.course {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    flex-shrink: 0;
}

.course_container {
    display: flex;
    align-items: stretch;
    padding: 8px;
    gap: 8px;
    min-height: 50px;
}

/* LEFT COLUMN - course_label with 2 rows */
.course_label {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 4px;
    min-width: 50px;
    max-width: 70px;
}

/* Top row in left column - course code */
.course_label div:first-child {
    font-weight: 600;
    color: var(--primary);
    font-size: 0.875rem;
    white-space: nowrap;
}

/* Bottom row in left column - delete button */
.course_label .delete_course {
    width: 18px;
    height: 18px;
    border: none;
    background: url('assets/closedb.png') center/contain no-repeat;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity 0.15s ease;
    align-self: flex-start;
}

.course_label .delete_course:hover {
    opacity: 1;
}
/* MIDDLE COLUMN - Course info */
.course_info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    color: var(--text-primary);
    font-size: 0.75rem;
    align-self: flex-start;
}

.course_info .course_name {
    font-weight: 600;
}

.course_info .course_type {
    text-transform: uppercase;
    color: var(--text-secondary);
    font-size: 0.675rem;
}

.course_info .course_credit {
    color: var(--text-muted);
}

/* RIGHT COLUMN - Grade */
.grade {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.15s ease;
    min-width: 32px;
    text-align: center;
    flex-shrink: 0;
    align-self: flex-start;
    flex-basis: 36px;
    max-width: 36px;
    padding: 4px 2px;
    position: relative;
}

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

/* Style the grade input that gets created by JavaScript */
.grade_input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    background: transparent;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    padding: 0;
    margin: 0;
    outline: none;
    cursor: pointer;
}

/* Auto-focus and open the grade input dropdown immediately */
.grade .grade_input:focus {
    background: var(--bg-card);
    border: 1px solid var(--primary);
    border-radius: var(--radius-sm);
    box-shadow: 0 0 0 2px rgba(13, 71, 161, 0.1);
}

/* Hide the placeholder text */
.grade .grade_input::placeholder {
    opacity: 0;
}

/* Style the datalist dropdown positioning */
.grade datalist {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    z-index: 100;
}

/* Add course button within a semester */
.addCourse {
    margin: 8px 0;
    border: 2px dashed var(--border);
    border-radius: var(--radius-sm);
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background 0.15s ease;
}

.addCourse:hover {
    background: var(--bg-surface);
}

/* Input container for adding a course */
.input_container {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 4px 0;
    flex-shrink: 0;
    max-width: 291px;
}

.input_container input,
.input_container select {
    flex: 1;
    padding: 6px 12px;
    font-size: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-primary);
    max-width: 250px;
}

/* Wrapper for custom course dropdown */
.input_container .input-wrapper {
    position: relative;
    flex: 1;
}

/* Custom dropdown for course suggestions */
.input_container .course-dropdown {
    position: absolute;
    top: auto;
    bottom: 100%;
    left: 0;
    right: 0;
    margin-bottom: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    max-height: 400px;
    overflow-y: auto;
    z-index: 100;
    display: none;
}

.input_container .course-option {
    padding: 4px 8px;
    cursor: pointer;
}

.input_container .course-option:hover,
.input_container .course-option.active {
    background: var(--bg-surface);
}

.input_container .enter,
.input_container .delete_add_course {
    width: 20px;
    height: 20px;
    border: none;
    background-size: contain;
    background-repeat: no-repeat;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.15s ease;
}

.input_container .enter {
    background-image: url('assets/tickb.png');
}

.input_container .delete_add_course {
    background-image: url('assets/closedb.png');
}

.input_container .enter:hover,
.input_container .delete_add_course:hover {
    opacity: 1;
}

/* Grade input styling */
.grade_input {
    padding: 2px 4px;
    font-size: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    width: 50px;
}

/* Tick icon for editing semester dates */
.tick {
    width: 20px;
    height: 20px;
    border: none;
    background-size: contain;
    background-repeat: no-repeat;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.15s ease;
}

.tick:hover {
    opacity: 1;
}

/* Styling for inputs in buttons */
.change_major input,
.doubleMajor input,
.entryTerm input,
.entryTermDM input,
.date input {
    padding: 4px 8px;
    font-size: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    outline: none;
    min-width: 120px;
}

.change_major input:focus,
.doubleMajor input:focus,
.entryTerm input:focus,
.entryTermDM input:focus,
.date input:focus {
    border-color: var(--primary);
}

/* Double major select styling */
.doubleMajorSelect {
    padding: 4px 8px;
    font-size: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    outline: none;
    cursor: pointer;
    min-width: 100px;
}

.doubleMajorSelect:focus {
    border-color: var(--primary);
}

/* Modal overlays */
.graduation_modal_overlay,
.summary_modal_overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

/* Graduation modal */

.graduation_modal {
    width: 640px; /* Doubled the width */
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 32px; /* Adjusted padding proportionally */
    color: var(--text-primary);
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: 24px; /* Adjusted gap between elements */
    font-size: 1.75rem; /* Increased font size proportionally */
}

/* Updated summary_modal to be 50% bigger */
.summary_modal {
    width: 360px; /* Increased by 50% */
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 24px; /* Adjusted padding proportionally */
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: 12px; /* Adjusted gap between elements */
    font-size: 1.2rem; /* Increased font size proportionally */
    color: var(--text-primary)
}

/* Title for the summary modal */
.summary_modal_title {
    text-align: center;
    font-weight: bold;
}

/* Rows within the summary modal */
.summary_modal_child {
    display: flex;
    align-items: center;
    padding: 4px 0;
    border-bottom: 1px solid var(--border);
}

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

.custom_course_overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.custom_course_modal {
    background: var(--bg-card);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 20px;
    min-width: 300px;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.custom_course_modal h3 {
    margin-top: 0;
    margin-bottom: 15px;
}

.custom_course_modal label {
    margin-bottom: 3px;
}

.custom_course_modal input,
.custom_course_modal select {
    padding: 6px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
}

.custom_course_modal .cc-row {
    display: flex;
    flex-direction: column;
    margin-bottom: 10px;
}

.custom_course_modal .cc-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 15px;
}

/* Double Major Category Modal */
.double_major_overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.double_major_modal {
    background: var(--bg-card);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 20px;
    min-width: 250px;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.double_major_modal h3 {
    margin-top: 0;
    margin-bottom: 15px;
}

.double_major_modal select {
    padding: 6px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    margin-bottom: 10px;
}

.double_major_modal .dm-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 15px;
}

.semester-summary-wrapper {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-in-out;
}

.semester-summary-wrapper.active {
    max-height: 500px;
}

/* Legacy compatibility classes */
.change_major, .entryTerm, .doubleMajor, .entryTermDM,
.addSemester, .check, .summary, .autoAdd, .customCourse,
.deleteCustom, .resetLocal {
    /* Styles already applied via .btn classes */
}

.semester_date_edit, .semester_drag, .delete_semester {
    /* Styles already applied via .semester-action-btn classes */
}

/* Input styles for dynamic content */
input[type="text"], input[type="file"], select {
    font-family: inherit;
    font-size: inherit;
}

/* Ensure proper focus styles */
input:focus, select:focus, button:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}