/**
 * Tutor Attendance - Frontend Styles
 * Modern 2026 Professional Design
 */

/* ====== CSS Variables ====== */
:root {
    --ta-primary: #2563eb;
    --ta-primary-light: #3b82f6;
    --ta-primary-dark: #1d4ed8;
    --ta-success: #10b981;
    --ta-success-light: #34d399;
    --ta-success-bg: #ecfdf5;
    --ta-danger: #ef4444;
    --ta-danger-light: #f87171;
    --ta-danger-bg: #fef2f2;
    --ta-warning: #f59e0b;
    --ta-warning-light: #fbbf24;
    --ta-warning-bg: #fffbeb;
    --ta-info: #06b6d4;
    --ta-info-bg: #ecfeff;
    --ta-purple: #8b5cf6;
    --ta-purple-bg: #f5f3ff;
    --ta-gray-50: #f9fafb;
    --ta-gray-100: #f3f4f6;
    --ta-gray-200: #e5e7eb;
    --ta-gray-300: #d1d5db;
    --ta-gray-400: #9ca3af;
    --ta-gray-500: #6b7280;
    --ta-gray-600: #4b5563;
    --ta-gray-700: #374151;
    --ta-gray-800: #1f2937;
    --ta-gray-900: #111827;
    --ta-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --ta-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --ta-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --ta-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --ta-radius: 12px;
    --ta-radius-sm: 8px;
    --ta-radius-lg: 16px;
}

/* ====== Base Styles ====== */
.ta-attendance-dashboard {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* ====== Dashboard Header ====== */
.ta-dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--ta-gray-200);
}

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

.ta-header-icon {
    color: var(--ta-primary);
    flex-shrink: 0;
}

.ta-header-title h2 {
    margin: 0;
    font-size: 28px;
    font-weight: 700;
    color: var(--ta-gray-900);
    letter-spacing: -0.025em;
}

.ta-header-user {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 16px;
    background: var(--ta-gray-100);
    border-radius: var(--ta-radius-lg);
}

.ta-avatar {
    border: 2px solid var(--ta-primary);
    border-radius: 50%;
}

.ta-user-name {
    font-weight: 600;
    color: var(--ta-gray-700);
    font-size: 14px;
}

/* ====== Course Card ====== */
.ta-course-card {
    background: #fff;
    border-radius: var(--ta-radius-lg);
    box-shadow: var(--ta-shadow-lg);
    margin-bottom: 32px;
    overflow: hidden;
    border: 1px solid var(--ta-gray-200);
    transition: all 0.3s ease;
}

.ta-course-card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

.ta-course-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: linear-gradient(135deg, var(--ta-primary) 0%, var(--ta-primary-dark) 100%);
    color: #fff;
}

.ta-course-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.ta-course-icon {
    opacity: 0.9;
}

.ta-course-title h3 {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.ta-course-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    opacity: 0.95;
}

/* ====== Stats Grid ====== */
.ta-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    padding: 24px;
    background: var(--ta-gray-50);
    border-bottom: 1px solid var(--ta-gray-200);
}

.ta-stat-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px;
    background: #fff;
    border-radius: var(--ta-radius);
    box-shadow: var(--ta-shadow-sm);
    border: 1px solid var(--ta-gray-200);
    transition: all 0.2s ease;
}

.ta-stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--ta-shadow-md);
}

.ta-stat-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--ta-radius);
}

.ta-stat-present .ta-stat-icon {
    background: var(--ta-success-bg);
    color: var(--ta-success);
}

.ta-stat-absent .ta-stat-icon {
    background: var(--ta-danger-bg);
    color: var(--ta-danger);
}

.ta-stat-late .ta-stat-icon {
    background: var(--ta-warning-bg);
    color: var(--ta-warning);
}

.ta-stat-percentage .ta-stat-icon {
    background: var(--ta-purple-bg);
    color: var(--ta-purple);
}

.ta-stat-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.ta-stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--ta-gray-900);
    line-height: 1;
}

.ta-stat-label {
    font-size: 13px;
    color: var(--ta-gray-500);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.ta-stat-warning-text {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: var(--ta-danger);
    font-weight: 600;
    margin-top: 2px;
}

.ta-stat-good .ta-stat-value {
    color: var(--ta-success);
}

.ta-stat-warning .ta-stat-value {
    color: var(--ta-danger);
}

/* ====== Table Wrapper ====== */
.ta-attendance-table-wrapper {
    padding: 24px;
}

.ta-table-header {
    margin-bottom: 16px;
}

.ta-table-header h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--ta-gray-700);
}

/* ====== Attendance Table ====== */
.ta-attendance-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 14px;
}

.ta-attendance-table thead th {
    padding: 14px 16px;
    background: var(--ta-gray-50);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ta-gray-600);
    border-bottom: 2px solid var(--ta-gray-200);
    text-align: left;
    white-space: nowrap;
}

.ta-attendance-table thead th:first-child {
    border-radius: var(--ta-radius-sm) 0 0 0;
}

.ta-attendance-table thead th:last-child {
    border-radius: 0 var(--ta-radius-sm) 0 0;
}

.ta-attendance-table tbody tr {
    transition: all 0.2s ease;
}

.ta-attendance-table tbody tr:hover {
    background: var(--ta-gray-50);
}

.ta-attendance-table tbody td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--ta-gray-200);
    color: var(--ta-gray-700);
}

.ta-date-cell {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.ta-date-icon {
    color: var(--ta-gray-400);
    flex-shrink: 0;
}

/* ====== Status Badge ====== */
.ta-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
}

.ta-status-present {
    background: var(--ta-success-bg);
    color: var(--ta-success);
}

.ta-status-absent {
    background: var(--ta-danger-bg);
    color: var(--ta-danger);
}

.ta-status-late {
    background: var(--ta-warning-bg);
    color: var(--ta-warning);
}

/* ====== Note Cell ====== */
.ta-note-cell {
    display: flex;
    align-items: center;
    gap: 8px;
    max-width: 300px;
}

.ta-note-icon {
    color: var(--ta-gray-400);
    flex-shrink: 0;
}

.ta-no-note {
    color: var(--ta-gray-400);
    font-style: italic;
}

/* ====== Notices ====== */
.ta-front-notice {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 24px;
    border-radius: var(--ta-radius-lg);
    margin: 24px auto;
    max-width: 600px;
    box-shadow: var(--ta-shadow-md);
}

.ta-notice-warning {
    background: linear-gradient(135deg, var(--ta-warning-bg) 0%, #fef3c7 100%);
    border: 1px solid var(--ta-warning-light);
}

.ta-notice-info {
    background: linear-gradient(135deg, var(--ta-info-bg) 0%, #f0f9ff 100%);
    border: 1px solid var(--ta-info);
}

.ta-notice-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
}

.ta-notice-warning .ta-notice-icon {
    color: var(--ta-warning);
}

.ta-notice-info .ta-notice-icon {
    color: var(--ta-info);
}

.ta-notice-content p {
    margin: 0;
    color: var(--ta-gray-700);
    font-size: 15px;
    line-height: 1.6;
}

.ta-link {
    color: var(--ta-primary);
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

.ta-link:hover {
    color: var(--ta-primary-dark);
    text-decoration: underline;
}

/* ====== Responsive Design ====== */
@media (max-width: 768px) {
    .ta-attendance-dashboard {
        padding: 16px;
    }

    .ta-dashboard-header {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }

    .ta-header-title h2 {
        font-size: 22px;
    }

    .ta-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        padding: 16px;
    }

    .ta-stat-card {
        padding: 14px;
    }

    .ta-stat-value {
        font-size: 22px;
    }

    .ta-stat-icon {
        width: 40px;
        height: 40px;
    }

    .ta-course-header {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }

    .ta-attendance-table-wrapper {
        padding: 16px;
        overflow-x: auto;
    }

    .ta-attendance-table {
        font-size: 13px;
    }

    .ta-attendance-table thead th,
    .ta-attendance-table tbody td {
        padding: 12px;
    }
}

@media (max-width: 480px) {
    .ta-stats-grid {
        grid-template-columns: 1fr;
    }

    .ta-header-user {
        width: 100%;
        justify-content: flex-start;
    }
}

/* ====== Animations ====== */
@keyframes taFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ta-course-card {
    animation: taFadeIn 0.4s ease-out;
}

.ta-stat-card {
    animation: taFadeIn 0.4s ease-out;
    animation-fill-mode: both;
}

.ta-stat-card:nth-child(1) { animation-delay: 0.05s; }
.ta-stat-card:nth-child(2) { animation-delay: 0.1s; }
.ta-stat-card:nth-child(3) { animation-delay: 0.15s; }
.ta-stat-card:nth-child(4) { animation-delay: 0.2s; }

/* ====== Print Styles ====== */
@media print {
    .ta-dashboard-header,
    .ta-header-user {
        display: none;
    }

    .ta-course-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #000;
    }

    .ta-stats-grid {
        display: block;
    }

    .ta-stat-card {
        display: inline-block;
        width: 23%;
        margin-right: 2%;
    }
}

/* ====== Tutor Instructor Attendance Dashboard ====== */
.ta-instructor-attendance-page {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.ta-instructor-attendance-hero {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    padding: 28px 32px;
    border: none;
    background:
        radial-gradient(circle at top right, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0) 38%),
        linear-gradient(135deg, #0f766e 0%, #155e75 100%);
    color: #fff;
}

.ta-instructor-attendance-hero__copy {
    max-width: 720px;
}

.ta-instructor-attendance-hero__eyebrow {
    display: inline-block;
    margin-bottom: 12px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.82);
}

.ta-instructor-attendance-hero__copy h2 {
    margin: 0 0 10px;
    font-size: 30px;
    font-weight: 700;
    color: #fff !important;
}

.ta-instructor-attendance-hero__copy p {
    margin: 0;
    font-size: 15px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.9);
}

.ta-instructor-attendance-hero__stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(160px, 1fr));
    gap: 14px;
    width: min(100%, 360px);
}

.ta-instructor-attendance-stat {
    padding: 18px 20px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.12);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.ta-instructor-attendance-stat span {
    display: block;
    margin-bottom: 8px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.78);
}

.ta-instructor-attendance-stat strong {
    font-size: 28px;
    line-height: 1;
    color: #fff;
}

.ta-instructor-attendance-list {
    display: grid;
    gap: 18px;
}

.ta-instructor-attendance-course {
    padding: 24px;
    border: 1px solid var(--ta-gray-200);
}

.ta-instructor-attendance-course__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.ta-instructor-attendance-course__eyebrow {
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ta-primary);
}

.ta-instructor-attendance-course__header h3 {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
    color: var(--ta-gray-900);
}

.ta-instructor-attendance-course__badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 0 14px;
    border-radius: 999px;
    background: var(--ta-info-bg);
    color: #0f766e;
    font-size: 13px;
    font-weight: 700;
    white-space: nowrap;
}

.ta-instructor-attendance-course__meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
    margin-bottom: 18px;
}

.ta-instructor-attendance-course__meta-item {
    padding: 16px;
    border: 1px solid var(--ta-gray-200);
    border-radius: 14px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.ta-instructor-attendance-course__meta-item span {
    display: block;
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ta-gray-500);
}

.ta-instructor-attendance-course__meta-item strong {
    color: var(--ta-gray-900);
    font-size: 15px;
    line-height: 1.5;
}

.ta-instructor-attendance-course__footer p {
    margin: 0;
    color: var(--ta-gray-600);
    font-size: 15px;
    line-height: 1.75;
}

.ta-instructor-attendance-empty {
    padding: 40px 32px;
    text-align: center;
}

.ta-instructor-attendance-empty h3 {
    margin: 0 0 10px;
    font-size: 24px;
    color: var(--ta-gray-900);
}

.ta-instructor-attendance-empty p {
    max-width: 620px;
    margin: 0 auto 20px;
    color: var(--ta-gray-600);
    font-size: 15px;
    line-height: 1.7;
}

@media (max-width: 768px) {
    .ta-instructor-attendance-hero {
        flex-direction: column;
        padding: 22px;
    }

    .ta-instructor-attendance-hero__stats {
        width: 100%;
        grid-template-columns: 1fr;
    }

    .ta-instructor-attendance-course {
        padding: 20px;
    }

    .ta-instructor-attendance-course__header {
        flex-direction: column;
    }
}

/* ====== Tutor Instructor Student Attendance ====== */
.ta-instructor-student-attendance-page {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.ta-instructor-student-attendance-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.75fr) 280px;
    gap: 24px;
    align-items: start;
}

.ta-instructor-student-attendance-main,
.ta-instructor-student-attendance-sidebar {
    min-width: 0;
}

.ta-instructor-student-attendance-sidebar {
    display: grid;
    gap: 16px;
}

.ta-instructor-student-attendance-filter {
    padding: 24px;
    border: 1px solid var(--ta-gray-200);
}

.ta-instructor-student-attendance-filter__copy {
    margin-bottom: 18px;
}

.ta-instructor-student-attendance-filter__copy h3,
.ta-instructor-student-attendance-notice h3,
.ta-instructor-student-attendance-sheet__header h3 {
    margin: 0 0 8px;
    color: var(--ta-gray-900);
    font-size: 24px;
}

.ta-instructor-student-attendance-filter__copy p,
.ta-instructor-student-attendance-notice p,
.ta-instructor-student-attendance-sheet__header p {
    margin: 0;
    color: var(--ta-gray-600);
    font-size: 15px;
    line-height: 1.7;
}

.ta-instructor-student-attendance-form {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    align-items: end;
}

.ta-instructor-student-attendance-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ta-instructor-student-attendance-field label {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--ta-gray-500);
}

.ta-instructor-student-attendance-field select,
.ta-instructor-student-attendance-field input[type="date"] {
    min-height: 48px;
    width: 100%;
    border: 1px solid var(--ta-gray-200);
    border-radius: 14px;
    background: #fff;
    color: var(--ta-gray-900);
    padding: 0 14px;
}

.ta-instructor-student-attendance-actions {
    display: flex;
    align-items: end;
}

.ta-instructor-student-attendance-actions .tutor-btn {
    width: 100%;
    justify-content: center;
}

.ta-instructor-student-attendance-notice {
    padding: 32px 28px;
    border: 1px solid var(--ta-gray-200);
}

.ta-instructor-student-attendance-sheet {
    border: 1px solid var(--ta-gray-200);
    overflow: hidden;
}

.ta-instructor-student-attendance-sheet__header {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) auto;
    align-items: center;
    gap: 24px;
    padding: 24px;
    border-bottom: 1px solid var(--ta-gray-200);
    background:
        radial-gradient(circle at top right, rgba(14, 165, 233, 0.16), rgba(14, 165, 233, 0) 26%),
        radial-gradient(circle at bottom left, rgba(15, 118, 110, 0.08), rgba(15, 118, 110, 0) 30%),
        linear-gradient(135deg, #ffffff 0%, #f7fbff 58%, #f0fdfa 100%);
}

.ta-instructor-student-attendance-sheet__intro {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 14px 0 6px;
}

.ta-instructor-student-attendance-sheet__eyebrow {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    min-height: 32px;
    padding: 0 12px;
    border-radius: 10px;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    box-shadow: 0 10px 18px rgba(37, 99, 235, 0.2);
}

.ta-instructor-student-attendance-quick {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    min-width: 180px;
}

.ta-front-mark-all.is-danger {
    border-color: #fecdd3;
    color: #be123c;
}

.ta-instructor-student-attendance-table-wrap {
    overflow-x: auto;
}

.ta-instructor-student-attendance-table {
    width: 100%;
    border-collapse: collapse;
}

.ta-instructor-student-attendance-table thead th {
    padding: 14px 16px;
    border-bottom: 1px solid var(--ta-gray-200);
    background: #f8fafc;
    color: var(--ta-gray-500);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    text-align: left;
    white-space: nowrap;
}

.ta-instructor-student-attendance-table tbody td {
    padding: 16px;
    border-bottom: 1px solid var(--ta-gray-200);
    text-align: left;
    vertical-align: middle;
}

.ta-instructor-student-attendance-table tbody tr:last-child td {
    border-bottom: none;
}

.ta-front-attendance-row[data-status="present"] {
    background: #f0fdf4;
}

.ta-front-attendance-row[data-status="absent"] {
    background: #fff1f2;
}

.ta-front-attendance-row[data-status="late"] {
    background: #fff8eb;
}

.ta-instructor-student-attendance-student {
    display: flex;
    align-items: center;
    gap: 12px;
}

.ta-instructor-student-attendance-avatar {
    width: 40px !important;
    height: 40px !important;
    border-radius: 50% !important;
}

.ta-instructor-student-attendance-student strong {
    display: block;
    color: var(--ta-gray-900);
}

.ta-instructor-student-attendance-student span {
    display: block;
    color: var(--ta-gray-500);
    font-size: 13px;
    word-break: break-word;
}

.ta-instructor-student-attendance-tick {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.ta-instructor-student-attendance-tick input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.ta-instructor-student-attendance-tick span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 999px;
    border: 2px solid var(--ta-gray-300);
    background: #fff;
    transition: all .2s ease;
}

.ta-instructor-student-attendance-tick.is-present input:checked + span {
    background: #22c55e;
    border-color: #22c55e;
    box-shadow: 0 0 0 4px rgba(34, 197, 94, .16);
}

.ta-instructor-student-attendance-tick.is-absent input:checked + span {
    background: #ef4444;
    border-color: #ef4444;
    box-shadow: 0 0 0 4px rgba(239, 68, 68, .14);
}

.ta-instructor-student-attendance-tick.is-late input:checked + span {
    background: #f59e0b;
    border-color: #f59e0b;
    box-shadow: 0 0 0 4px rgba(245, 158, 11, .16);
}

.ta-instructor-student-attendance-note {
    width: 100%;
    min-width: 180px;
    min-height: 42px;
    border: 1px solid var(--ta-gray-200);
    border-radius: 12px;
    padding: 0 12px;
}

.ta-instructor-student-attendance-save {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 22px 24px;
    border-top: 1px solid var(--ta-gray-200);
    background: #fbfdff;
}

#ta-front-attendance-message {
    font-size: 14px;
    font-weight: 600;
}

#ta-front-attendance-message.is-success {
    color: #15803d;
}

#ta-front-attendance-message.is-error {
    color: #be123c;
}

.ta-instructor-student-attendance-summary,
.ta-instructor-student-attendance-metric {
    padding: 22px 20px;
    border: 1px solid var(--ta-gray-200);
}

.ta-instructor-student-attendance-summary span,
.ta-instructor-student-attendance-metric span {
    display: block;
    margin-bottom: 8px;
    color: var(--ta-gray-500);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.ta-instructor-student-attendance-summary strong,
.ta-instructor-student-attendance-metric strong {
    display: block;
    color: var(--ta-gray-900);
    font-size: 28px;
    line-height: 1;
}

.ta-instructor-student-attendance-metric.is-total {
    background: linear-gradient(135deg, #fff6bf 0%, #fde68a 100%);
}

.ta-instructor-student-attendance-metric.is-present {
    background: linear-gradient(135deg, #dcfce7 0%, #bbf7d0 100%);
}

.ta-instructor-student-attendance-metric.is-absent {
    background: linear-gradient(135deg, #ffe4e6 0%, #fecdd3 100%);
}

.ta-instructor-student-attendance-metric.is-late {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
}

@media (max-width: 900px) {
    .ta-instructor-student-attendance-layout {
        grid-template-columns: 1fr;
    }

    .ta-instructor-student-attendance-form {
        grid-template-columns: 1fr;
    }

    .ta-instructor-student-attendance-actions .tutor-btn {
        width: auto;
    }

    .ta-instructor-student-attendance-sheet__header,
    .ta-instructor-student-attendance-save {
        flex-direction: column;
        align-items: stretch;
    }
}

/* ====== Student Attendance Refresh ====== */
.ta-instructor-student-attendance-page .ta-instructor-attendance-hero {
    border: 1px solid rgba(15, 118, 110, 0.08);
    border-radius: 28px;
    box-shadow: 0 24px 48px rgba(15, 23, 42, 0.08);
}

.ta-instructor-student-attendance-page .ta-instructor-attendance-hero__copy {
    max-width: 760px;
}

.ta-instructor-student-attendance-layout {
    grid-template-columns: minmax(0, 1.9fr) 260px;
    gap: 20px;
}

.ta-instructor-student-attendance-filter,
.ta-instructor-student-attendance-sheet,
.ta-instructor-student-attendance-notice,
.ta-instructor-student-attendance-summary,
.ta-instructor-student-attendance-metric {
    border-radius: 24px;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.06);
}

.ta-instructor-student-attendance-filter {
    background:
        radial-gradient(circle at top right, rgba(15, 118, 110, 0.08), rgba(15, 118, 110, 0) 32%),
        linear-gradient(180deg, #ffffff 0%, #fbfefd 100%);
}

.ta-instructor-student-attendance-filter__copy h3 {
    font-size: 22px;
    letter-spacing: -.02em;
}

.ta-instructor-student-attendance-form {
    grid-template-columns: minmax(220px, 1.3fr) minmax(210px, 1fr) 190px;
}

.ta-instructor-student-attendance-field select,
.ta-instructor-student-attendance-field input[type="date"] {
    min-height: 52px;
    border-radius: 16px;
    box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.03);
}

.ta-instructor-student-attendance-field select:focus,
.ta-instructor-student-attendance-field input[type="date"]:focus,
.ta-instructor-student-attendance-note:focus {
    outline: none;
    border-color: var(--ta-primary);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.12);
}

.ta-instructor-student-attendance-load,
.ta-front-mark-all,
#ta-front-save-attendance {
    min-height: 52px;
    border: none !important;
    border-radius: 999px !important;
    font-weight: 700;
    box-shadow: 0 16px 28px rgba(14, 165, 233, 0.18);
}

.ta-instructor-student-attendance-load,
#ta-front-save-attendance {
    background: linear-gradient(135deg, #0f766e 0%, #0ea5e9 100%) !important;
    color: #fff !important;
}

.ta-front-mark-all {
    justify-content: center;
    background: linear-gradient(135deg, rgba(236, 254, 255, 0.92) 0%, rgba(209, 250, 229, 0.92) 100%) !important;
    color: #0f766e !important;
    border: 1px solid rgba(15, 118, 110, 0.14) !important;
    box-shadow: 0 14px 24px rgba(15, 118, 110, 0.08);
}

.ta-front-mark-all:hover,
.ta-instructor-student-attendance-load:hover,
#ta-front-save-attendance:hover {
    transform: translateY(-1px);
}

.ta-front-mark-all.is-danger {
    background: linear-gradient(135deg, rgba(255, 241, 242, 0.96) 0%, rgba(255, 228, 230, 0.96) 100%) !important;
    color: #e11d48 !important;
    border-color: rgba(225, 29, 72, 0.16) !important;
}

.ta-instructor-student-attendance-sidebar {
    position: sticky;
    top: 24px;
}

.ta-instructor-student-attendance-summary {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

.ta-instructor-student-attendance-summary span,
.ta-instructor-student-attendance-summary strong {
    color: #fff;
}

.ta-instructor-student-attendance-sheet {
    background: #fff;
}

.ta-instructor-student-attendance-sheet__header {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) auto;
    align-items: center;
    gap: 24px;
    padding: 24px 26px;
    background:
        radial-gradient(circle at top right, rgba(14, 165, 233, 0.16), rgba(14, 165, 233, 0) 26%),
        radial-gradient(circle at bottom left, rgba(15, 118, 110, 0.08), rgba(15, 118, 110, 0) 30%),
        linear-gradient(135deg, #ffffff 0%, #f7fbff 58%, #f0fdfa 100%);
}

.ta-instructor-student-attendance-sheet__header h3 {
    margin: 0;
    color: #0f172a;
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -.03em;
}

.ta-instructor-student-attendance-sheet__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.ta-instructor-student-attendance-sheet__meta span {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 16px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.86);
    border: 1px solid rgba(148, 163, 184, 0.18);
    color: #1e40af;
    font-size: 12px;
    font-weight: 700;
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.04);
}

.ta-instructor-student-attendance-table {
    table-layout: fixed;
    min-width: 980px;
}

.ta-instructor-student-attendance-table col.ta-col-id {
    width: 105px;
}

.ta-instructor-student-attendance-table col.ta-col-status {
    width: 92px;
}

.ta-instructor-student-attendance-table col.ta-col-note {
    width: 220px;
}

.ta-instructor-student-attendance-table thead th {
    padding: 16px 18px;
    background: #f8fafc;
    color: #64748b;
}

.ta-instructor-student-attendance-table tbody td {
    padding: 18px;
    background: transparent;
}

.ta-instructor-student-attendance-table tbody td:nth-child(3),
.ta-instructor-student-attendance-table tbody td:nth-child(4),
.ta-instructor-student-attendance-table tbody td:nth-child(5) {
    text-align: center;
}

.ta-front-attendance-row {
    transition: background .2s ease;
}

.ta-front-attendance-row:hover {
    background: #f8fafc;
}

.ta-front-attendance-row[data-status="present"] {
    background: #f0fdf4;
}

.ta-front-attendance-row[data-status="absent"] {
    background: #fff1f2;
}

.ta-front-attendance-row[data-status="late"] {
    background: #fff8eb;
}

.ta-instructor-student-attendance-student {
    gap: 14px;
    min-width: 0;
}

.ta-instructor-student-attendance-student__meta {
    min-width: 0;
}

.ta-instructor-student-attendance-student strong {
    font-size: 15px;
    line-height: 1.35;
}

.ta-instructor-student-attendance-student span {
    margin-top: 4px;
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.ta-instructor-student-attendance-tick span {
    width: 38px;
    height: 38px;
    border-width: 2px;
}

.ta-instructor-student-attendance-note {
    min-width: 0;
    min-height: 48px;
    border-radius: 999px;
    background: #fff;
}

.ta-instructor-student-attendance-save {
    padding: 22px 26px;
}

.ta-instructor-student-attendance-metric {
    overflow: hidden;
    position: relative;
}

.ta-instructor-student-attendance-metric::before {
    content: '';
    position: absolute;
    inset: 0 auto 0 0;
    width: 6px;
    background: rgba(15, 23, 42, 0.08);
}

.ta-instructor-student-attendance-metric.is-total::before {
    background: #eab308;
}

.ta-instructor-student-attendance-metric.is-present::before {
    background: #22c55e;
}

.ta-instructor-student-attendance-metric.is-absent::before {
    background: #fb7185;
}

.ta-instructor-student-attendance-metric.is-late::before {
    background: #f59e0b;
}

@media (max-width: 900px) {
    .ta-instructor-student-attendance-sidebar {
        position: static;
    }

    .ta-instructor-student-attendance-form {
        grid-template-columns: 1fr;
    }

    .ta-instructor-student-attendance-actions .tutor-btn {
        width: 100%;
    }

    .ta-instructor-student-attendance-sheet__meta {
        margin-bottom: 4px;
    }

    .ta-instructor-student-attendance-quick {
        width: 100%;
        min-width: 0;
    }

    .ta-front-mark-all {
        flex: 1 1 0;
        justify-content: center;
    }

    .ta-instructor-student-attendance-sheet__header {
        grid-template-columns: 1fr;
        align-items: stretch;
    }
}