/* Gradebook Page Styling */
.gradebook-subtitle {
    color: var(--text-muted) !important;
}

/* Results Table Premium Styling */
.results-table {
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.85rem;
    color: var(--text-main);
    background: transparent;
    width: max-content;
    min-width: 100%;
}

.results-table th, .results-table td {
    border: 1px solid var(--glass-border);
    padding: 4px 8px; /* Balanced padding */
    vertical-align: middle;
    text-align: center; /* Center content */
    width: 1px; /* Force shrink */
    white-space: nowrap;
    height: 28px; /* Standardized height to prevent overlap */
}

.results-th-fixed, .results-td-fixed {
    position: sticky !important;
    left: 0 !important;
    background: var(--bg-color) !important;
    z-index: 30 !important;
    min-width: 150px !important;
    max-width: 180px !important; /* Added constraint */
    font-weight: 600;
    border-right: 2px solid var(--glass-border) !important;
    box-shadow: 2px 0 5px rgba(0,0,0,0.3);
    overflow: hidden; /* Prevent overscale */
    text-overflow: ellipsis; /* Use ellipsis for long names */
}

.results-table thead tr:nth-child(1) th {
    position: sticky;
    top: 0;
    z-index: 25;
    background: var(--bg-color);
}

.results-table thead tr:nth-child(2) th {
    position: sticky;
    top: 28px;
    z-index: 25;
    background: var(--bg-color);
}

.results-table thead tr:nth-child(3) th {
    position: sticky;
    top: 56px;
    z-index: 25;
    background: var(--bg-color);
}

.results-table thead tr:nth-child(4) th {
    position: sticky;
    top: 84px;
    z-index: 25;
    background: var(--bg-color);
}

/* Intersection of sticky row and sticky column */
.results-table thead th.results-th-fixed {
    z-index: 40 !important;
}

.results-th-group {
    background: var(--group-bg, rgba(139, 92, 246, 0.08)) !important;
    color: var(--text-main) !important;
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    font-weight: 600;
    border-bottom: 1px solid var(--glass-border) !important;
}

.results-th-sub {
    background: rgba(255, 255, 255, 0.02) !important;
    font-size: 0.75rem;
    color: var(--text-muted) !important;
    font-weight: 500;
}

.results-th-date {
    background: transparent !important;
    padding: 4px !important;
    border-bottom: 2px solid var(--glass-border) !important;
}

.results-date-input {
    width: 80px !important;
    background: transparent !important;
    border: 1px solid transparent !important;
    color: var(--text-main) !important;
    font-size: 0.65rem !important;
    text-align: center;
    border-radius: 4px;
    padding: 1px 2px !important;
    margin: 0 auto;
    display: block;
    transition: all 0.2s;
}

.results-date-input:hover {
    border-color: var(--glass-border) !important;
    background: rgba(255,255,255,0.02) !important;
}

.results-date-input::-webkit-calendar-picker-indicator {
    filter: invert(0.8);
    opacity: 0.6;
    cursor: pointer;
    margin-left: -15px; /* Pull icon closer to text for centering */
}

.results-grade-input {
    width: 100% !important;
    background: transparent !important;
    border: none !important;
    color: var(--text-main) !important;
    text-align: center;
    font-size: 0.9rem !important;
    font-weight: 500;
}

.results-grade-input:focus {
    background: rgba(255, 255, 255, 0.08) !important;
    box-shadow: inset 0 0 0 1px var(--accent-primary) !important;
    border-radius: 4px;
}

.results-grader-cell-input {
    width: 60px !important;
    max-width: 60px !important;
    border: 1px solid var(--glass-border) !important;
    background: rgba(255, 255, 255, 0.01) !important;
    color: #f8fafc !important;
    font-size: 0.85rem !important;
    font-weight: 600 !important;
    height: 25px !important;
    border-radius: 4px !important;
    text-align: center !important;
}

.results-row:hover {
    background: rgba(255, 255, 255, 0.03) !important;
}

.results-td-collapsed {
    background: rgba(255, 255, 255, 0.02) !important;
    border-right: 1px solid var(--glass-border) !important;
}

/* Results Tabs */
.results-tabs {
    border-bottom: 1px solid var(--glass-border) !important;
}

.results-tabs .nav-link {
    background: transparent !important;
    border: none !important;
    color: var(--text-muted) !important;
    font-weight: 600;
    font-size: 0.85rem;
    padding: 0.5rem 1.25rem;
    transition: all 0.2s;
}

.results-tabs .nav-link:hover {
    color: var(--text-main) !important;
}

.results-tabs .nav-link.active {
    color: var(--accent-primary) !important;
    position: relative;
}

.results-tabs .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
}

.results-th-period {
    background: rgba(6, 182, 212, 0.1) !important;
    color: var(--accent-secondary) !important;
    font-weight: 600;
    font-size: 0.8rem;
    border-bottom: 1px solid var(--accent-secondary) !important;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.results-scroll-container {
    max-height: calc(100vh - 220px);
    max-width: 100%;
    overflow: auto;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    background: var(--table-container-bg);
    position: relative;
    box-shadow: 0 10px 30px -10px rgba(0,0,0,0.2);
}

/* Custom Scrollbar for the table */
.results-scroll-container::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

.results-scroll-container::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
}

.results-scroll-container::-webkit-scrollbar-thumb {
    background: var(--glass-border);
    border-radius: 5px;
    border: 2px solid transparent;
    background-clip: content-box;
}

.results-scroll-container::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* Premium Modal Styling */
.modal-content {
    background: var(--bg-color) !important;
    backdrop-filter: blur(20px) !important;
    border: 1px solid var(--glass-border) !important;
    color: var(--text-main) !important;
    border-radius: 12px !important;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5) !important;
}

.modal-header {
    border-bottom: 1px solid var(--glass-border) !important;
    background: rgba(255, 255, 255, 0.02) !important;
    border-top-left-radius: 12px !important;
    border-top-right-radius: 12px !important;
}

.modal-footer {
    border-top: 1px solid var(--glass-border) !important;
    background: rgba(255, 255, 255, 0.02) !important;
    border-bottom-left-radius: 12px !important;
    border-bottom-right-radius: 12px !important;
}

.modal-title {
    color: var(--accent-secondary) !important;
    font-weight: 700 !important;
}

.form-check-label {
    color: var(--text-main) !important;
    font-size: 0.85rem;
}

/* Dashboard Specific Styles */
.upload-glass {
    width: 100%;
    height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 2px dashed var(--glass-border) !important;
    border-radius: 15px !important;
    background: var(--glass-bg) !important;
    color: var(--text-main) !important;
}

.textarea-glass {
    width: 100%;
    height: 120px;
    background: var(--glass-bg) !important;
    color: var(--text-main) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 10px;
    padding: 10px;
    resize: vertical;
}

.textarea-prominent {
    font-size: 0.95rem !important;
    line-height: 1.6 !important;
    color: #f8fafc !important;
    background: rgba(0, 0, 0, 0.45) !important;
}

.dash-table-glass {
    background: transparent !important;
}

.dash-table-glass .dash-header {
    background-color: var(--glass-bg) !important;
    color: var(--accent-primary) !important;
    font-weight: bold !important;
    border: 1px solid var(--glass-border) !important;
}

.dash-table-glass .dash-cell {
    background-color: transparent !important;
    color: var(--text-main) !important;
    border: 1px solid var(--glass-border) !important;
    padding: 12px !important;
    text-align: left !important;
} 

/* Calendar Styling */
.calendar-container {
    display: flex;
    gap: 15px;
    height: calc(100vh - 160px);
}

.calendar-main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.calendar-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    flex: 1;
    min-height: 0;
}

.calendar-day-column {
    display: flex;
    flex-direction: column;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    padding: 10px;
    overflow-y: hidden;
}

.calendar-day-header {
    text-align: center;
    font-weight: 600;
    margin-bottom: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--glass-border);
    color: var(--accent-secondary);
}

.calendar-comment-area {
    margin-bottom: 10px;
    background: rgba(255, 255, 255, 0.02) !important;
    border: 1px dashed var(--glass-border) !important;
    border-radius: 6px !important;
    color: var(--text-muted) !important;
    font-size: 0.75rem !important;
    min-height: 60px !important;
}
.calendar-comment-area:focus {
    background: var(--glass-bg) !important;
    border-color: var(--accent-secondary) !important;
}

.calendar-events-list {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow-y: auto;
    padding-right: 4px;
}

/* Custom Scrollbar for events */
.calendar-events-list::-webkit-scrollbar {
    width: 4px;
}
.calendar-events-list::-webkit-scrollbar-thumb {
    background: var(--glass-border);
    border-radius: 2px;
}

.calendar-event-card {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(139, 92, 246, 0.05));
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 6px;
    padding: 8px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    display: flex;
    flex-direction: column;
}

.calendar-event-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    border-color: var(--accent-primary);
}

.calendar-event-appt {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(6, 182, 212, 0.05));
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.calendar-event-appt:hover {
    border-color: var(--accent-secondary);
}

.calendar-event-time {
    font-weight: 700;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.calendar-event-title {
    font-weight: 600;
    color: var(--text-main);
}

.calendar-event-class {
    font-size: 0.7rem;
    color: var(--accent-secondary);
    margin-top: 4px;
}

.calendar-event-notes {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-style: italic;
    margin-top: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    opacity: 0.8;
}

.calendar-session-panel {
    width: 320px;
    display: flex;
    flex-direction: column;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    padding: 15px;
}

.session-panel-header {
    margin-bottom: 15px;
}

.session-student-list {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-right: 4px;
}

.session-student-row {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 8px 10px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.session-student-name {
    font-weight: 600;
    font-size: 0.85rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.session-note-input {
    background: rgba(0, 0, 0, 0.2) !important;
    border: 1px solid var(--glass-border) !important;
    color: var(--text-main) !important;
    font-size: 0.75rem !important;
    border-radius: 4px !important;
    padding: 2px 6px !important;
    width: 100%;
}
.session-note-input:focus {
    border-color: var(--accent-primary) !important;
    outline: none;
}

/* Custom Grading System Styling Refinements */
.results-grade-input {
    text-align: center !important;
    font-weight: 700 !important;
    font-size: 0.8rem !important;
    padding: 0.15rem 0.3rem !important;
    border-radius: 4px !important;
    transition: all 0.2s ease-in-out !important;
}

.results-grade-input:focus {
    border-color: var(--accent-primary) !important;
    box-shadow: 0 0 6px rgba(108, 92, 231, 0.4) !important;
    background: rgba(255, 255, 255, 0.05) !important;
}

/* Glassmorphism Textarea for AI essay submissions */
.textarea-glass {
    background: rgba(0, 0, 0, 0.3) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 8px !important;
    padding: 10px 12px !important;
    font-size: 0.85rem !important;
    font-family: inherit !important;
    transition: border-color 0.2s ease, box-shadow 0.2s ease !important;
    resize: vertical;
}

.textarea-glass:focus {
    border-color: var(--accent-primary) !important;
    box-shadow: 0 0 8px rgba(108, 92, 231, 0.3) !important;
    outline: none !important;
}

/* Glow spark animation for the AI essay corrector button */
.btn-ai-sparkle {
    position: relative;
    border: 1px solid rgba(108, 92, 231, 0.4);
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.15), rgba(6, 182, 212, 0.15));
    transition: all 0.2s ease-in-out;
}

.btn-ai-sparkle:hover {
    transform: scale(1.05);
    border-color: var(--accent-secondary);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.4);
}

/* Divider styling for calculated summary fields placed next to Student Name */
.results-summary-divider {
    border-right: 2px solid rgba(255, 255, 255, 0.15) !important;
}

[data-theme='light'] .results-summary-divider {
    border-right: 2px solid rgba(0, 0, 0, 0.15) !important;
}

.nav-separator {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin: 8px 12px;
}

[data-theme='light'] .nav-separator {
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

/* Calendar Responsiveness */
@media (max-width: 991.98px) {
    .calendar-container {
        flex-direction: column;
        height: auto;
    }
    .calendar-session-panel {
        width: 100%;
        max-height: none;
        margin-top: 20px;
    }
    .calendar-grid {
        grid-template-columns: repeat(2, 1fr);
        height: auto;
        flex: none;
    }
    .calendar-day-column {
        min-height: 250px;
        overflow-y: auto;
    }
    .session-student-row {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 15px;
    }
    .session-student-name {
        flex: 1;
        margin-bottom: 0;
    }
    .session-note-input {
        width: 250px !important;
    }
}

@media (max-width: 767.98px) {
    .calendar-grid {
        grid-template-columns: 1fr;
    }
    .calendar-header-row {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}

@media (max-width: 575.98px) {
    .session-student-row {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
    .session-note-input {
        width: 100% !important;
    }
}