/* === SEMESTER CONTAINER - FILL AVAILABLE HEIGHT === */
.semester-container {
    width: var(--semester-width);
    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: 95%; /* Take remaining height between header and footer */
    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: var(--alpha-white-20);
    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: var(--alpha-white-70);
}

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

.semester-action-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: var(--alpha-white-20);
    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: var(--alpha-white-30);
}

/* === 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;
    font-family: inherit;
    line-height: 1.2;
    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 var(--alpha-legacy-success-20);
}

.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: var(--tone-danger-100);
    color: var(--tone-danger-600);
}

.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 var(--alpha-primary-10);
}

.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;
    width: 100%;
}

.import-file {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    flex: 1 1 auto;
    min-width: 0;
    max-width: none;
}

/* shared divider for dropdown panels */
/* === PLAN DROPDOWN === */
.plan-container {
    position: relative;
}

.plan-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 360px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 16px;
    z-index: 55;
    display: none;
}

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

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

.plan-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 340px;
    overflow: auto;
    padding-right: 4px;
}

.plan-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-surface);
}

.plan-item.active {
    border-color: var(--primary);
}

.plan-item.dragging {
    opacity: 0.7;
}

.plan-grip {
    color: var(--text-secondary);
    cursor: grab;
    width: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.plan-move-controls,
.semester-move-controls {
    display: inline-flex;
    align-items: center;
    gap: 2px;
}

.plan-move {
    min-width: 24px;
    min-height: 28px;
    padding: 3px 5px;
}

.plan-move:disabled,
.semester_move:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.plan-select {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 0.875rem;
    text-align: left;
    cursor: pointer;
    padding: 2px 0;
}

.plan-select:hover {
    color: var(--text-primary);
}

.plan-actions {
    display: inline-flex;
    gap: 4px;
}

.btn-icon {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 4px 6px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    min-height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: var(--bg-card);
    border-color: var(--border);
}

.btn-icon.danger {
    color: var(--tone-danger-600);
}

.plan-divider {
    height: 1px;
    background: var(--border);
    margin: 12px 0;
}

.plan-footer {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

/* === MODALS === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--alpha-black-50);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    /* Keep app modals above custom dropdowns, summary overlays, and scheduler. */
    z-index: 3000;
}

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

.app-modal {
    width: 520px;
    max-width: 92vw;
    padding: 18px 18px 14px;
    border: 1px solid var(--border);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.app-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.app-modal-title {
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    font-size: 1.05rem;
}

.app-modal-close {
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    padding: 6px 8px;
    cursor: pointer;
    min-height: 28px;
}

.app-modal-close:hover {
    background: var(--bg-surface);
    border-color: var(--border);
}

.app-modal-body {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.35;
    overflow-y: auto;
    min-height: 0;
    padding-right: 2px;
}

.app-modal-body p {
    margin: 0 0 10px 0;
}

.app-modal-body ol {
    margin: 6px 0 10px 18px;
}

.app-modal-body li {
    margin: 4px 0;
}

.app-modal-input {
    width: 100%;
    margin-top: 10px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
}

.app-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
    background: var(--bg-card);
    flex-shrink: 0;
}

/* === RELEASE UPDATE === */
.release-update-modal {
    width: min(620px, 92vw);
    max-height: min(720px, 90vh);
}

.release-update-modal-body {
    padding-right: 6px;
    overscroll-behavior: contain;
}

.release-update-guide {
    color: var(--text-secondary);
}

.release-update-lead {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 700;
}

.release-update-list {
    margin: 12px 0;
    padding-left: 22px;
}

.release-update-list li {
    margin: 10px 0;
}

.release-update-list strong {
    color: var(--text-primary);
}

.release-update-note {
    margin-bottom: 0;
    padding: 10px 12px;
    border-left: 3px solid var(--state-warning);
    border-radius: var(--radius-sm);
    background: var(--planner-warning-bg);
    color: var(--planner-warning-text);
}

.release-update-modal .app-modal-footer .btn {
    min-height: 44px;
}

/* === HELP & INFORMATION === */
.help-info-modal {
    width: min(960px, 94vw);
    height: min(760px, 90vh);
}

.help-info-modal-body {
    padding-right: 6px;
    overscroll-behavior: contain;
}

.help-info-guide {
    color: var(--text-secondary);
}

.help-info-disclaimer {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 16px;
    padding: 12px 14px;
    border: 1px solid var(--state-warning);
    border-radius: var(--radius-md);
    background: var(--planner-warning-bg);
    color: var(--planner-warning-text);
}

.help-info-disclaimer > i {
    flex: 0 0 auto;
    margin-top: 3px;
}

.help-info-layout {
    display: grid;
    grid-template-columns: minmax(170px, 210px) minmax(0, 1fr);
    align-items: start;
    gap: 18px;
}

.help-info-nav {
    position: sticky;
    top: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-surface);
}

.help-info-nav-link {
    display: block;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-weight: 600;
    line-height: 1.25;
    text-decoration: none;
}

.help-info-nav-link:hover {
    background: var(--bg-card);
    color: var(--primary);
}

.help-info-content {
    min-width: 0;
}

.help-info-section {
    scroll-margin-top: 8px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-card);
}

.help-info-section + .help-info-section {
    margin-top: 14px;
}

.help-info-section h4 {
    margin: 0 0 10px;
    color: var(--text-primary);
    font-size: 1.05rem;
    line-height: 1.3;
}

.help-info-section h5 {
    margin: 14px 0 5px;
    color: var(--text-primary);
    font-size: 0.9rem;
    line-height: 1.3;
}

.help-info-section h4 + h5 {
    margin-top: 0;
}

.help-info-section p:last-child,
.help-info-section ol:last-child,
.help-info-section ul:last-child {
    margin-bottom: 0;
}

.help-info-section ol,
.help-info-section ul {
    padding-left: 4px;
}

.help-info-section a {
    color: var(--primary);
    font-weight: 600;
    overflow-wrap: anywhere;
}

.help-info-section a:hover {
    color: var(--primary-hover);
}

.help-info-tip {
    padding: 10px 12px;
    border-left: 3px solid var(--primary);
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
}

.admit-term-help-modal {
    width: min(580px, 92vw);
    max-height: min(680px, 90vh);
}

.admit-term-help-modal-body {
    padding-right: 5px;
    overscroll-behavior: contain;
}

.admit-term-help-guide {
    color: var(--text-secondary);
}

.admit-term-policy-list {
    margin: 8px 0 12px;
    padding-left: 22px;
}

.admit-term-policy-list li + li {
    margin-top: 8px;
}

.admit-term-verification {
    margin-bottom: 0;
    padding: 10px 12px;
    border-left: 3px solid var(--primary);
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    color: var(--text-primary);
}

.admit-term-help-summary > strong:first-child {
    display: block;
    margin-bottom: 6px;
    color: var(--text-primary);
}

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