:root {
    --ds-font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Segoe UI", sans-serif;
    --ds-bg: #f4f5f7;
    --ds-bg-elevated: rgba(255, 255, 255, 0.88);
    --ds-bg-elevated-strong: #ffffff;
    --ds-border: rgba(15, 23, 42, 0.08);
    --ds-border-strong: rgba(15, 23, 42, 0.12);
    --ds-text: #111827;
    --ds-text-muted: #6b7280;
    --ds-text-soft: #8c93a3;
    --ds-accent: #2563eb;
    --ds-accent-soft: rgba(37, 99, 235, 0.1);
    --ds-success: #1f9d55;
    --ds-warning: #c6861a;
    --ds-danger: #cc4b4b;
    --ds-radius-sm: 14px;
    --ds-radius-md: 20px;
    --ds-radius-lg: 28px;
    --ds-shadow-sm: 0 10px 24px rgba(15, 23, 42, 0.05);
    --ds-shadow-md: 0 18px 44px rgba(15, 23, 42, 0.08);
    --ds-shadow-lg: 0 28px 60px rgba(15, 23, 42, 0.12);
}

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--ds-font-sans);
}

body {
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0) 26%),
        linear-gradient(180deg, #f5f6f8 0%, #eef1f5 100%);
}

::selection {
    background: rgba(37, 99, 235, 0.16);
    color: var(--ds-text);
}

a,
button,
.btn,
.card,
.form-control,
.form-control-sm,
.table tbody tr {
    transition: all 0.22s ease;
}

#page-topbar {
    background: rgba(255, 255, 255, 0.76);
    backdrop-filter: blur(22px);
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
}

#page-topbar.topbar-shadow {
    box-shadow: 0 16px 36px rgba(15, 23, 42, 0.08);
}

.navbar-header {
    height: 74px;
    padding: 0 1.25rem 0 1.1rem;
}

.navbar-menu {
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(28px);
    border-right: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow: 10px 0 34px rgba(15, 23, 42, 0.05);
    padding-bottom: calc(74px + 24px);
}

.navbar-brand-box {
    align-items: center;
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    display: flex;
    justify-content: center;
    min-height: 88px;
    padding: 12px 18px;
}

.navbar-brand-box .logo {
    align-items: center;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(246, 248, 251, 0.96));
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 22px;
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.06);
    display: inline-flex;
    justify-content: center;
    line-height: 1;
    min-height: 64px;
    padding: 8px 18px;
}

.navbar-brand-box .logo img {
    display: block;
}

#scrollbar {
    padding: 18px 14px 28px;
}

.navbar-section-label {
    color: #98a1b2;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.16em;
    margin-bottom: 12px;
    padding: 0 10px;
    text-transform: uppercase;
}

#navbar-menu-list > li {
    padding: 0;
    margin-bottom: 4px;
}

#navbar-menu-list ul {
    padding-left: 0;
    margin: 4px 0 10px;
}

#navbar-menu-list li span,
#navbar-menu-list .navbar-item-expandable {
    border-radius: 16px;
}

#navbar-menu-list .navbar-item-expandable,
#navbar-menu-list > li > div:not(.navbar-item-expandable) {
    align-items: center;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 16px;
    min-height: 48px;
    padding: 0 12px;
}

#navbar-menu-list li span {
    align-items: center;
    color: var(--ds-text);
    font-size: 14px;
    font-weight: 600;
    gap: 2px;
    padding: 0;
}

#navbar-menu-list li span a {
    color: var(--ds-text);
    font-size: 14px;
    font-weight: 600;
}

#navbar-menu-list .navbar-item-expandable:hover,
#navbar-menu-list > li > div:hover,
#navbar-menu-list li span a:hover {
    text-decoration: none;
}

#navbar-menu-list .navbar-item-expandable:hover,
#navbar-menu-list > li > div:not(.navbar-item-expandable):hover,
#navbar-menu-list ul li > div:hover {
    background: rgba(255, 255, 255, 0.84);
    border-color: rgba(15, 23, 42, 0.07);
    box-shadow: 0 10px 20px rgba(15, 23, 42, 0.05);
}

#navbar-menu-list ul li > div {
    align-items: center;
    border: 1px solid transparent;
    border-radius: 14px;
    margin: 3px 0;
    min-height: 42px;
    padding: 0 12px 0 44px;
}

#navbar-menu-list > li ul {
    font-size: 13px;
    list-style: none;
}

#navbar-menu-list > li ul li span,
#navbar-menu-list > li ul li span a {
    color: #5f6b7c;
    font-size: 13px;
    font-weight: 600;
}

.navbar-icon {
    align-items: center;
    background: rgba(37, 99, 235, 0.08);
    border-radius: 12px;
    color: #315eb5;
    display: inline-flex;
    font-size: 14px;
    height: 30px;
    justify-content: center;
    margin-bottom: 0;
    margin-right: 12px;
    min-width: 30px;
}

.navbar-item-expand-icon {
    color: #98a1b2;
    font-size: 13px;
    margin-left: 10px;
}

.navbar-item-expandable.open,
.navbar-item-expandable[aria-expanded="true"] {
    background: rgba(255, 255, 255, 0.86);
    border-color: rgba(15, 23, 42, 0.08);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
}

.header-item {
    height: 74px;
    margin-left: 6px;
}

.ds-topbar-link,
.ds-topbar-user-link,
#topnav-hamburger-icon {
    align-items: center;
    background: rgba(255, 255, 255, 0.84);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 16px;
    box-shadow: 0 10px 22px rgba(15, 23, 42, 0.04);
    color: var(--ds-text) !important;
    display: inline-flex;
    gap: 10px;
    justify-content: center;
    min-height: 44px;
    min-width: 44px;
    padding: 0 14px;
    position: relative;
}

.ds-topbar-link:hover,
.ds-topbar-user-link:hover,
#topnav-hamburger-icon:hover {
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.07);
    color: var(--ds-text) !important;
    text-decoration: none;
    transform: translateY(-1px);
}

.ds-topbar-link-icon {
    font-size: 17px;
}

.ds-topbar-user {
    background: transparent !important;
}

.ds-topbar-user-link {
    font-size: 14px;
    font-weight: 600;
    min-width: unset;
    padding: 0 16px;
}

.ds-topbar-dropdown {
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(18px);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 16px;
    box-shadow: 0 18px 38px rgba(15, 23, 42, 0.12);
    padding: 8px;
}

.ds-topbar-dropdown .dropdown-item {
    border-radius: 12px;
    color: var(--ds-text);
    font-size: 14px;
    font-weight: 600;
    padding: 10px 12px;
}

.ds-topbar-dropdown .dropdown-item:hover {
    background: rgba(37, 99, 235, 0.08);
    color: #214eaa;
}

#testBasketLinkCounter,
#workSheetPrintLinkCounter {
    position: absolute;
    right: 6px;
    top: 7px;
}

#testBasketLinkCounter span,
#workSheetPrintLinkCounter span {
    align-items: center;
    background: linear-gradient(180deg, #2563eb, #1d4ed8);
    border-radius: 999px;
    box-shadow: 0 8px 18px rgba(37, 99, 235, 0.28);
    color: #fff;
    display: inline-flex;
    font-size: 11px;
    font-weight: 700;
    height: 20px;
    justify-content: center;
    min-width: 20px;
    padding: 0 6px;
}

#topnav-hamburger-icon {
    cursor: pointer;
    padding: 0 12px;
}

.topnav-hamburger {
    align-items: center;
    display: flex;
}

.hamburger-icon .bar {
    background-color: #4b5a74;
    border-radius: 999px;
    height: 2px;
    width: 20px;
}

.mobile-menu-bg-overlay {
    background: rgba(15, 23, 42, 0.32);
    backdrop-filter: blur(6px);
}

.ds-page-eyebrow {
    color: var(--ds-accent);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.ds-admin-dashboard .page-title-box h4 {
    color: var(--ds-text);
    font-size: 28px !important;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 8px;
    text-transform: none;
}

.ds-page-subtitle {
    color: var(--ds-text-muted);
    font-size: 14px;
    line-height: 1.65;
    margin-bottom: 0;
    max-width: 720px;
}

.ds-page-status {
    align-items: center;
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 999px;
    box-shadow: var(--ds-shadow-sm);
    color: var(--ds-text);
    display: inline-flex;
    font-size: 13px;
    font-weight: 600;
    gap: 8px;
    padding: 10px 14px;
}

.ds-page-status::before {
    background: linear-gradient(180deg, #34d399, #10b981);
    border-radius: 50%;
    content: "";
    display: inline-block;
    height: 9px;
    width: 9px;
}

.ds-section-label {
    color: var(--ds-text);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.04em;
    margin-bottom: 14px;
    text-transform: uppercase;
}

.ds-card-subtitle {
    color: var(--ds-text-muted);
    font-size: 13px;
    line-height: 1.55;
    margin: 6px 0 0;
}

.btn.ds-primary-btn {
    background: linear-gradient(180deg, #1f2937, #111827);
    border: 0;
    border-radius: 14px;
    box-shadow: 0 16px 28px rgba(17, 24, 39, 0.18);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    padding: 10px 16px;
}

.btn.ds-primary-btn:hover {
    box-shadow: 0 20px 34px rgba(17, 24, 39, 0.24);
    color: #fff;
    transform: translateY(-1px);
}

body.ds-admin {
    color: var(--ds-text);
}

body.ds-admin .page-content {
    padding: calc(74px + 1.75rem) 1.1rem 74px;
    min-height: calc(100vh - 74px);
}

body.ds-admin .container-fluid {
    max-width: 1680px;
    padding-left: 12px;
    padding-right: 12px;
}

body.ds-admin .page-title-box {
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.08), transparent 34%),
        radial-gradient(circle at top right, rgba(15, 118, 110, 0.08), transparent 30%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.94));
    border: 1px solid rgba(15, 23, 42, 0.07);
    border-radius: var(--ds-radius-lg);
    box-shadow: 0 22px 46px rgba(15, 23, 42, 0.08);
    margin: 0 0 1.75rem;
    padding: 22px 24px;
}

body.ds-admin .page-title-box h4 {
    color: var(--ds-text);
    font-size: 28px !important;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 0;
    text-transform: none;
}

body.ds-admin .page-title-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

body.ds-admin .card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(255, 255, 255, 0.98));
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: var(--ds-radius-md);
    box-shadow: 0 18px 38px rgba(15, 23, 42, 0.07);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

body.ds-admin .card-header {
    background: transparent;
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    box-shadow: none;
    padding: 18px 20px 14px;
}

body.ds-admin .card-title {
    color: var(--ds-text);
    font-size: 17px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0;
}

body.ds-admin .card-body {
    padding: 20px;
}

body.ds-admin .card-footer,
body.ds-admin .modal-footer {
    background: rgba(248, 250, 252, 0.72);
    border-top: 1px solid rgba(15, 23, 42, 0.06);
    padding: 14px 20px;
}

body.ds-admin .table-responsive {
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 18px;
    overflow: auto;
    scrollbar-color: rgba(148, 163, 184, 0.6) transparent;
}

body.ds-admin .card .table-responsive,
body.ds-admin .modal .table-responsive {
    border: 0;
    border-radius: 0;
}

body.ds-admin .table {
    color: var(--ds-text);
    margin-bottom: 0;
}

body.ds-admin .table thead th,
body.ds-admin .table thead td {
    background: rgba(244, 246, 249, 0.85);
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    color: var(--ds-text-soft);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.06em;
    padding: 14px 18px;
    text-transform: uppercase;
    vertical-align: middle;
}

body.ds-admin .table tbody td,
body.ds-admin .table tbody th {
    border-top: 1px solid rgba(15, 23, 42, 0.05);
    padding: 15px 18px;
    vertical-align: middle;
}

body.ds-admin .table tbody tr:hover {
    background: rgba(37, 99, 235, 0.04);
}

body.ds-admin .btn {
    align-items: center;
    border-radius: 14px;
    border-width: 1px;
    box-shadow: 0 10px 22px rgba(15, 23, 42, 0.06);
    display: inline-flex;
    font-size: 14px;
    font-weight: 700;
    gap: 8px;
    justify-content: center;
    min-height: 42px;
    padding: 10px 16px;
    transition: all 0.22s ease;
}

body.ds-admin .btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

body.ds-admin .btn.btn-sm {
    font-size: 13px;
    min-height: 38px;
    padding: 8px 14px;
}

body.ds-admin .btn:not(.btn-danger):not(.btn-info):not(.btn-success):not(.btn-warning):not(.btn-secondary):not(.btn-light):not(.btn-outline-primary):not(.btn-outline-danger):not(.btn-link) {
    background: linear-gradient(180deg, #1f2937, #111827);
    border-color: transparent;
    color: #fff;
}

body.ds-admin .btn:not(.btn-danger):not(.btn-info):not(.btn-success):not(.btn-warning):not(.btn-secondary):not(.btn-light):not(.btn-outline-primary):not(.btn-outline-danger):not(.btn-link):hover {
    box-shadow: 0 16px 28px rgba(17, 24, 39, 0.14);
    color: #fff;
}

body.ds-admin .btn-info,
body.ds-admin .btn-primary,
body.ds-admin .btn-success {
    border-color: transparent;
    color: #fff;
}

body.ds-admin .btn-primary,
body.ds-admin .btn-info {
    background: linear-gradient(180deg, #4b8ef8, #2563eb);
}

body.ds-admin .btn-success {
    background: linear-gradient(180deg, #31ba73, #1f9d55);
}

body.ds-admin .btn-warning {
    background: linear-gradient(180deg, #f6c868, #d99b20);
    border-color: transparent;
    color: #fff;
}

body.ds-admin .btn-danger,
body.ds-admin .btn-outline-danger:hover {
    background: linear-gradient(180deg, #f07a7a, #d94e4e);
    border-color: transparent;
    color: #fff;
}

body.ds-admin .btn-secondary {
    background: linear-gradient(180deg, #eef2f7, #dfe6ee);
    border-color: rgba(15, 23, 42, 0.08);
    color: var(--ds-text);
}

body.ds-admin .btn-light {
    background: rgba(255, 255, 255, 0.96);
    border-color: rgba(15, 23, 42, 0.08);
    color: var(--ds-text);
}

body.ds-admin .btn-outline-primary,
body.ds-admin .btn-outline-danger {
    background: rgba(255, 255, 255, 0.92);
}

body.ds-admin .btn-outline-primary {
    border-color: rgba(37, 99, 235, 0.22);
    color: #214eaa;
}

body.ds-admin .btn-outline-primary:hover {
    background: rgba(37, 99, 235, 0.08);
    color: #214eaa;
}

body.ds-admin .btn.disabled,
body.ds-admin .btn:disabled {
    box-shadow: none;
    opacity: 0.6;
    transform: none;
}

body.ds-admin .form-control,
body.ds-admin .form-control-sm,
body.ds-admin .advanced-select input,
body.ds-admin .tagify {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 14px;
    box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.03);
    color: var(--ds-text);
}

body.ds-admin .form-control,
body.ds-admin .advanced-select input,
body.ds-admin .tagify {
    min-height: 42px;
    padding: 0.65rem 0.9rem;
}

body.ds-admin .form-control-sm {
    min-height: 38px;
}

body.ds-admin textarea.form-control {
    min-height: 120px;
}

body.ds-admin .form-control:focus,
body.ds-admin .form-control-sm:focus,
body.ds-admin .advanced-select input:focus,
body.ds-admin .tagify:focus-within {
    background: #fff;
    border-color: rgba(37, 99, 235, 0.35);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
}

body.ds-admin .form-control::placeholder,
body.ds-admin .advanced-select input::placeholder {
    color: #9aa3b2;
}

body.ds-admin label,
body.ds-admin .control-label {
    color: var(--ds-text);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 8px;
}

body.ds-admin .dropdown-menu:not(.ds-topbar-dropdown) {
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(18px);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 16px;
    box-shadow: 0 18px 38px rgba(15, 23, 42, 0.12);
    padding: 8px;
}

body.ds-admin .dropdown-item {
    border-radius: 12px;
    color: var(--ds-text);
    font-size: 14px;
    font-weight: 600;
    padding: 10px 12px;
}

body.ds-admin .dropdown-item:hover {
    background: rgba(37, 99, 235, 0.08);
    color: #214eaa;
}

body.ds-admin .modal-content {
    background: rgba(255, 255, 255, 0.97);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 24px;
    box-shadow: 0 28px 60px rgba(15, 23, 42, 0.16);
}

body.ds-admin .modal-header {
    align-items: center;
    background: rgba(248, 250, 252, 0.88);
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    padding: 18px 20px 14px;
}

body.ds-admin .modal-title {
    color: var(--ds-text);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

body.ds-admin .modal-body {
    padding: 20px;
}

body.ds-admin .progress {
    background: #e9eef5;
    border-radius: 999px;
    height: 12px;
    overflow: hidden;
}

body.ds-admin .progress-bar {
    border-radius: 999px;
}

body.ds-admin #worksheetWizardModal .modal-dialog {
    max-width: 1040px;
}

body.ds-admin #worksheetWizardModal .modal-body {
    background:
        radial-gradient(circle at top right, rgba(37, 99, 235, 0.05), transparent 28%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(249, 250, 252, 0.95));
}

body.ds-admin #filterTopicGradeWorksheetWizContainer {
    background: rgba(248, 250, 252, 0.9);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 18px;
    padding: 16px 18px;
}

body.ds-admin .worksheet-wizard-table-wrapper {
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 20px;
    margin-top: 16px;
    overflow: visible;
}

body.ds-admin #tableWordsheetWiz {
    margin-top: 0 !important;
}

body.ds-admin #tableWordsheetWiz tbody td {
    background: rgba(255, 255, 255, 0.88);
}

body.ds-admin #tableWordsheetWiz tbody tr:first-child td:first-child {
    border-top-left-radius: 16px;
}

body.ds-admin #tableWordsheetWiz tbody tr:first-child td:last-child {
    border-top-right-radius: 16px;
}

body.ds-admin #tableWordsheetWiz .advanced-select {
    min-width: 210px;
}

body.ds-admin #worksheetWizCreateBtn,
body.ds-admin #addTopicWorksheetWiz {
    white-space: nowrap;
}

body.ds-admin .items-grid__item {
    background: linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(251, 252, 253, 0.98));
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 20px;
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.06);
    overflow: hidden;
}

body.ds-admin .items-grid__item.folder-item {
    background: rgba(255, 255, 255, 0.92);
}

body.ds-admin .items-grid__item .tray,
body.ds-admin .items-grid__item .price-div {
    backdrop-filter: blur(12px);
}

body.ds-admin .footer {
    background: transparent;
    color: #7f8898;
    padding-top: 0;
}

body.ds-admin .footer .container-fluid {
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 20px;
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.05);
    padding: 16px 20px;
}

@media (max-width: 991.98px) {
    .navbar-menu {
        background: rgba(255, 255, 255, 0.94);
    }

    body.ds-admin .page-content {
        padding: calc(74px + 1.35rem) 0.9rem 68px;
    }

    body.ds-admin .page-title-box {
        padding: 20px;
    }

    body.ds-admin .page-title-box h4 {
        font-size: 24px !important;
    }
}

@media (max-width: 767.98px) {
    body.ds-admin .page-title-right {
        margin-top: 14px;
    }

    body.ds-admin .card-header {
        padding: 16px 16px 12px;
    }

    body.ds-admin .card-body,
    body.ds-admin .modal-body {
        padding: 16px;
    }
}

body.ds-student,
body.ds-student-auth {
    color: var(--ds-text);
    font-family: var(--ds-font-sans);
    min-height: 100vh;
}

body.ds-student:not(.skinned):not(.ds-student-auth) {
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0) 28%),
        linear-gradient(180deg, #f7f8fb 0%, #eef2f7 100%);
}

body.ds-student.skinned {
    background-attachment: fixed !important;
    background-position: center center !important;
    background-repeat: no-repeat !important;
    background-size: cover !important;
}

body.ds-student.skinned::before {
    background: rgba(244, 247, 251, 0.38);
    content: "";
    inset: 0;
    pointer-events: none;
    position: fixed;
    z-index: 0;
}

body.ds-student .container,
body.ds-student-auth .container {
    max-width: 1320px;
}

body.ds-student .student-navbar-wrapper,
body.ds-student-auth .student-navbar-wrapper {
    background: transparent !important;
    padding: 16px 14px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

body.ds-student .student-navbar,
body.ds-student-auth .student-navbar {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(24px);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 26px;
    box-shadow: 0 20px 42px rgba(15, 23, 42, 0.08);
    min-height: 74px;
    padding: 12px 18px;
}

body.ds-student .student-navbar .navbar-brand img,
body.ds-student-auth .student-navbar .navbar-brand img {
    max-height: 48px;
}

body.ds-student .student-nav-link,
body.ds-student-auth .student-nav-link {
    align-items: center;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 16px;
    box-shadow: 0 10px 22px rgba(15, 23, 42, 0.05);
    color: var(--ds-text) !important;
    display: inline-flex;
    font-size: 14px;
    font-weight: 600;
    gap: 8px;
    min-height: 44px;
    padding: 0 14px !important;
}

body.ds-student .student-nav-link:hover,
body.ds-student-auth .student-nav-link:hover {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.08);
    color: var(--ds-text) !important;
    text-decoration: none;
    transform: translateY(-1px);
}

body.ds-student .student-nav-link.student-nav-icon-only {
    justify-content: center;
    min-width: 44px;
    padding: 0 12px !important;
}

body.ds-student .student-nav-dropdown,
body.ds-student-auth .student-nav-dropdown,
body.ds-student .dropdown-menu {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(18px);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 18px;
    box-shadow: 0 22px 44px rgba(15, 23, 42, 0.12);
    padding: 8px;
}

body.ds-student .student-nav-dropdown .dropdown-item,
body.ds-student-auth .student-nav-dropdown .dropdown-item,
body.ds-student .dropdown-menu .dropdown-item {
    border-radius: 12px;
    color: var(--ds-text);
    font-size: 14px;
    font-weight: 600;
    padding: 10px 12px;
}

body.ds-student .student-nav-dropdown .dropdown-item:hover,
body.ds-student-auth .student-nav-dropdown .dropdown-item:hover,
body.ds-student .dropdown-menu .dropdown-item:hover {
    background: rgba(37, 99, 235, 0.08);
    color: #214eaa;
}

body.ds-student .student-avatar-pill {
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 50%;
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.06);
    height: 38px;
    overflow: hidden;
    width: 38px;
}

body.ds-student #myAvatarFullView {
    backdrop-filter: blur(10px);
}

body.ds-student .card,
body.ds-student .student-surface,
body.ds-student .form-wrapper,
body.ds-student-auth .form-wrapper,
body.ds-student .tab-contents,
body.ds-student .secondary-navbar,
body.ds-student .secondary-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.94));
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 24px;
    box-shadow: 0 20px 44px rgba(15, 23, 42, 0.08);
}

body.ds-student .card {
    margin-bottom: 1.5rem;
    overflow: hidden;
}

body.ds-student .card-header {
    background: transparent;
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    padding: 18px 20px 14px;
}

body.ds-student .card-body {
    padding: 20px;
}

body.ds-student .card-title {
    color: var(--ds-text);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0;
}

body.ds-student .table {
    color: var(--ds-text);
    margin-bottom: 0;
}

body.ds-student .table thead th,
body.ds-student .table thead td {
    background: rgba(244, 246, 249, 0.85);
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    color: var(--ds-text-soft);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.06em;
    padding: 14px 18px;
    text-transform: uppercase;
}

body.ds-student .table tbody td,
body.ds-student .table tbody th {
    border-top: 1px solid rgba(15, 23, 42, 0.05);
    padding: 15px 18px;
    vertical-align: middle;
}

body.ds-student .table tbody tr:hover {
    background: rgba(37, 99, 235, 0.04);
}

body.ds-student .btn,
body.ds-student-auth .btn {
    align-items: center;
    border-radius: 14px;
    border-width: 1px;
    box-shadow: 0 10px 22px rgba(15, 23, 42, 0.06);
    display: inline-flex;
    font-size: 14px;
    font-weight: 700;
    gap: 8px;
    justify-content: center;
    min-height: 42px;
    padding: 10px 16px;
}

body.ds-student .btn:hover,
body.ds-student-auth .btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

body.ds-student .btn.btn-sm,
body.ds-student-auth .btn.btn-sm {
    font-size: 13px;
    min-height: 38px;
    padding: 8px 14px;
}

body.ds-student .btn:not(.btn-danger):not(.btn-info):not(.btn-success):not(.btn-warning):not(.btn-secondary):not(.btn-light):not(.btn-outline-primary):not(.btn-outline-danger):not(.btn-link):not(.btn-student),
body.ds-student-auth .btn:not(.btn-danger):not(.btn-info):not(.btn-success):not(.btn-warning):not(.btn-secondary):not(.btn-light):not(.btn-outline-primary):not(.btn-outline-danger):not(.btn-link):not(.btn-student) {
    background: linear-gradient(180deg, #1f2937, #111827);
    border-color: transparent;
    color: #fff;
}

body.ds-student .btn-primary,
body.ds-student .btn-info,
body.ds-student-auth .btn-primary,
body.ds-student-auth .btn-info {
    background: linear-gradient(180deg, #4b8ef8, #2563eb);
    border-color: transparent;
    color: #fff;
}

body.ds-student .btn-success,
body.ds-student-auth .btn-success {
    background: linear-gradient(180deg, #31ba73, #1f9d55);
    border-color: transparent;
    color: #fff;
}

body.ds-student .btn-danger,
body.ds-student-auth .btn-danger {
    background: linear-gradient(180deg, #f07a7a, #d94e4e);
    border-color: transparent;
    color: #fff;
}

body.ds-student .btn-secondary,
body.ds-student-auth .btn-secondary {
    background: linear-gradient(180deg, #eef2f7, #dfe6ee);
    border-color: rgba(15, 23, 42, 0.08);
    color: var(--ds-text);
}

body.ds-student .btn-light,
body.ds-student-auth .btn-light {
    background: rgba(255, 255, 255, 0.96);
    border-color: rgba(15, 23, 42, 0.08);
    color: var(--ds-text);
}

body.ds-student .form-control,
body.ds-student .form-control-sm,
body.ds-student .advanced-select input,
body.ds-student-auth .form-control,
body.ds-student-auth .form-control-sm {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 14px;
    box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.03);
    color: var(--ds-text);
}

body.ds-student .form-control,
body.ds-student .advanced-select input,
body.ds-student-auth .form-control {
    min-height: 44px;
    padding: 0.7rem 0.95rem;
}

body.ds-student .form-control:focus,
body.ds-student .form-control-sm:focus,
body.ds-student .advanced-select input:focus,
body.ds-student-auth .form-control:focus,
body.ds-student-auth .form-control-sm:focus {
    background: #fff;
    border-color: rgba(37, 99, 235, 0.35);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
}

body.ds-student label,
body.ds-student-auth label {
    color: var(--ds-text);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 8px;
}

body.ds-student .page-title-box {
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.08), transparent 34%),
        radial-gradient(circle at top right, rgba(15, 118, 110, 0.08), transparent 30%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.94));
    border: 1px solid rgba(15, 23, 42, 0.07);
    border-radius: 28px;
    box-shadow: 0 22px 46px rgba(15, 23, 42, 0.08);
    margin-bottom: 1.75rem;
    padding: 22px 24px;
}

body.ds-student .page-title-box h4 {
    color: var(--ds-text);
    font-size: 28px !important;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 0;
    text-transform: none;
}

body.ds-student .student-page-shell {
    padding-bottom: 36px;
}

body.ds-student .student-page-panel {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.95));
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 28px;
    box-shadow: 0 24px 52px rgba(15, 23, 42, 0.08);
    color: var(--ds-text);
    padding: 28px;
}

body.ds-student.skinned .student-page-panel {
    backdrop-filter: blur(18px);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.88));
}

body.ds-student .student-page-panel > :last-child {
    margin-bottom: 0;
}

body.ds-student .student-page-header {
    align-items: flex-start;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: space-between;
    margin-bottom: 24px;
}

body.ds-student .student-page-title {
    color: var(--ds-text);
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 6px;
}

body.ds-student .student-page-subtitle {
    color: var(--ds-text-muted);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 0;
}

body.ds-student .student-page-info-bar {
    background: rgba(248, 250, 252, 0.9);
    border: 1px solid rgba(15, 23, 42, 0.07);
    border-radius: 20px;
    margin-bottom: 24px;
    padding: 16px 18px;
}

body.ds-student.skinned .student-page-info-bar {
    background: rgba(248, 250, 252, 0.82);
}

body.ds-student .student-page-actions {
    display: flex;
    gap: 12px;
    justify-content: space-between;
    margin-top: 24px;
}

body.ds-student .student-page-actions .btn {
    min-width: 120px;
}

body.ds-student .student-count-badge {
    align-items: center;
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.14);
    border-radius: 999px;
    color: #1d4ed8;
    display: inline-flex;
    font-size: 13px;
    font-weight: 700;
    gap: 8px;
    min-height: 38px;
    padding: 0 14px;
}

body.ds-student .student-link-list {
    list-style: none;
    margin: 18px 0 0;
    padding: 0;
}

body.ds-student .student-link-list li + li {
    margin-top: 12px;
}

body.ds-student .student-link-list a {
    align-items: center;
    background: rgba(248, 250, 252, 0.92);
    border: 1px solid rgba(15, 23, 42, 0.07);
    border-radius: 18px;
    color: var(--ds-text);
    display: flex;
    font-weight: 600;
    justify-content: space-between;
    padding: 14px 16px;
    text-decoration: none;
}

body.ds-student .student-link-list a:hover {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.06);
    color: var(--ds-text);
    text-decoration: none;
    transform: translateY(-1px);
}

body.ds-student .student-link-list a::after {
    color: var(--ds-text-muted);
    content: "\f054";
    font-family: "Font Awesome 6 Free";
    font-size: 12px;
    font-weight: 900;
}

body.ds-student .student-page-panel .table-responsive {
    background: rgba(255, 255, 255, 0.86);
    border: 1px solid rgba(15, 23, 42, 0.07);
    border-radius: 20px;
    /* overflow: hidden; */
}

body.ds-student .student-page-panel .text-muted {
    color: var(--ds-text-muted) !important;
}

body.ds-student .student-page-panel .page-title,
body.ds-student .student-page-panel h3,
body.ds-student .student-page-panel h4,
body.ds-student .student-page-panel h5 {
    color: var(--ds-text);
}

body.ds-student .student-page-panel .tabbed-pane-controls .back-tab-btn {
    color: var(--ds-text-muted);
}

body.ds-student .student-page-panel .advanced-select {
    max-width: 460px;
}

body.ds-student .student-page-panel .sidebar {
    background: rgba(248, 250, 252, 0.76);
    border: 1px solid rgba(15, 23, 42, 0.07);
    border-radius: 22px;
    padding: 20px;
}

body.ds-student .student-page-panel .sidebar-mobile-handle {
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(15, 23, 42, 0.07);
    border-radius: 16px;
    color: var(--ds-text);
    margin-bottom: 14px;
    padding: 12px 14px;
}

body.ds-student .problem-wrapper {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.99), rgba(250, 251, 253, 0.96));
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 22px;
    box-shadow: 0 18px 36px rgba(15, 23, 42, 0.07);
    color: var(--ds-text);
    margin-bottom: 24px;
    padding: 24px;
}

body.ds-student .problem-wrapper img {
    border-radius: 14px;
    height: auto !important;
    max-width: 100%;
}

body.ds-student .problem-wrapper table {
    width: 100%;
}

body.ds-student .answerTextareaWrapper,
body.ds-student .answerTextAreaWrapper {
    margin-bottom: 20px;
}

body.ds-student .answerTextareaWrapper h5,
body.ds-student .answerTextAreaWrapper h5 {
    color: var(--ds-text);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 14px;
}

body.ds-student .mcq-options-wrapper,
body.ds-student .drag-drop-answer-area,
body.ds-student .answer-wrapper,
body.ds-student .student-inline-card,
body.ds-student #correctionAdvice {
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 20px;
    box-shadow: 0 16px 30px rgba(15, 23, 42, 0.06);
    color: var(--ds-text);
    margin-bottom: 14px;
    padding: 18px;
}

body.ds-student #answerTextarea {
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 18px;
    box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.03);
    color: var(--ds-text);
    margin-bottom: 14px;
    min-height: 120px;
    padding: 16px 18px;
}

body.ds-student .drag-drop-answer-area {
    max-width: 800px;
}

body.ds-student .mcq-option-row {
    align-items: center;
    background: rgba(248, 250, 252, 0.88);
    border: 1px solid rgba(15, 23, 42, 0.07);
    border-radius: 14px;
    color: var(--ds-text);
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    padding: 12px 14px;
}

body.ds-student .mcq-option-row:last-child {
    margin-bottom: 0;
}

body.ds-student .mcq-option-row input {
    flex-shrink: 0;
}

body.ds-student .drag-drop-problem-image-wrapper {
    margin-bottom: 16px !important;
    overflow: hidden;
    position: relative;
}

body.ds-student .drag-drop-problem-image-wrapper img,
body.ds-student .solution-media-image {
    border-radius: 18px;
    display: block;
    width: 100%;
}

body.ds-student .drag-drop-helper-text {
    color: var(--ds-text-muted);
    font-size: 14px;
    margin-bottom: 12px;
}

body.ds-student .student-problem-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

body.ds-student .student-problem-actions .btn {
    min-width: 122px;
}

body.ds-student .student-toolbar-toggle {
    align-items: center;
    display: inline-flex;
    position: relative;
}

body.ds-student #problems-section > .options-section {
    flex-wrap: wrap;
}

body.ds-student .student-tool-trigger,
body.ds-student .text-to-speech-selected-language-wrapper,
body.ds-student .student-boost-chip,
body.ds-student .timer-section {
    align-items: center;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 14px;
    box-shadow: 0 10px 22px rgba(15, 23, 42, 0.05);
    color: var(--ds-text-muted);
    display: inline-flex;
    gap: 8px;
    min-height: 42px;
    padding: 0 12px;
    text-decoration: none !important;
}

body.ds-student .student-tool-trigger:hover,
body.ds-student .text-to-speech-selected-language-wrapper:hover {
    color: var(--ds-text);
    text-decoration: none;
    transform: translateY(-1px);
}

body.ds-student .student-tool-trigger i,
body.ds-student .text-to-speech-selected-language-wrapper i {
    font-size: 15px !important;
}

body.ds-student .text-to-speech-selected-language {
    color: var(--ds-text);
    font-size: 14px !important;
    font-weight: 600;
}

body.ds-student .student-boost-chip {
    color: #7c3aed;
    font-weight: 700;
}

body.ds-student .timer-section {
    color: var(--ds-text);
    font-size: 14px !important;
    font-weight: 700;
}

body.ds-student .solution-media-shell {
    margin-bottom: 14px;
    max-width: 800px;
    position: relative;
}

body.ds-student .solution-media-overlay {
    height: 100%;
    left: 0;
    position: absolute;
    top: 0;
    width: 100%;
}

body.ds-student .solution-video-card {
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 20px;
    box-shadow: 0 18px 36px rgba(15, 23, 42, 0.07);
    overflow: hidden;
}

body.ds-student .solution-video-header {
    align-items: center;
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    display: flex;
    justify-content: space-between;
    padding: 14px 18px;
}

body.ds-student .solution-video-title {
    color: var(--ds-text);
    font-size: 15px;
    font-weight: 700;
    margin: 0;
}

body.ds-student .solution-video-expand {
    color: var(--ds-text-muted);
    cursor: pointer;
    font-size: 15px;
}

body.ds-student .solution-video-body {
    display: flex;
    justify-content: center;
    padding: 16px;
}

body.ds-student .solution-video {
    border-radius: 16px;
    display: block;
    max-width: 100%;
}

body.ds-student .student-empty-state {
    color: var(--ds-text-muted);
    font-size: 18px;
    font-weight: 600;
    padding: 24px 0;
    text-align: center;
}

body.ds-student .secondary-navbar {
    margin-bottom: 1rem;
    padding: 12px 16px !important;
}

body.ds-student #tab-button {
    display: flex;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 8px;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 22px;
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.06);
}

body.ds-student #tab-button li {
    display: block !important;
    flex: 1;
    width: auto !important;
}

body.ds-student #tab-button li a {
    background: transparent !important;
    border: 1px solid transparent !important;
    border-radius: 14px;
    color: var(--ds-text-muted) !important;
    display: block;
    font-size: 14px;
    font-weight: 600;
    padding: 0.8rem 1rem !important;
    text-align: center;
    text-decoration: none;
}

body.ds-student #tab-button .is-active a {
    background: linear-gradient(180deg, #4b8ef8, #2563eb) !important;
    border-color: transparent !important;
    box-shadow: 0 14px 24px rgba(37, 99, 235, 0.18);
    color: #fff !important;
}

body.ds-student .tab-contents {
    margin-top: 14px;
    padding: 22px;
}

body.ds-student .items-grid {
    gap: 18px !important;
}

body.ds-student .items-grid__item {
    background: linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(251, 252, 253, 0.98)) !important;
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 22px;
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.06);
    overflow: hidden;
}

body.ds-student .items-grid__item.folder-item {
    background: rgba(255, 255, 255, 0.92) !important;
    border: 1px dashed rgba(37, 99, 235, 0.26) !important;
    min-height: 180px;
}

body.ds-student .items-grid__item .tray,
body.ds-student .items-grid__item .price-div {
    backdrop-filter: blur(12px);
}

body.ds-student .items-grid__item .tray {
    background: rgba(15, 23, 42, 0.78) !important;
    padding: 8px 10px !important;
}

body.ds-student .items-grid__item .price-div {
    background: rgba(15, 23, 42, 0.76) !important;
    border-radius: 0 0 14px 0;
    padding: 6px 10px;
}

body.ds-student .quick-link-div {
    align-items: center;
    background: linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(252, 252, 253, 0.98));
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 24px;
    box-shadow: 0 18px 36px rgba(15, 23, 42, 0.07);
    color: var(--ds-text);
    display: flex;
    gap: 16px;
    height: 100%;
    min-height: 108px;
    padding: 20px 22px;
    text-decoration: none;
}

body.ds-student .quick-link-div:hover {
    box-shadow: 0 24px 44px rgba(15, 23, 42, 0.1);
    color: var(--ds-text);
    text-decoration: none;
    transform: translateY(-2px);
}

body.ds-student .quick-link-icon {
    border-radius: 18px !important;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.42);
    flex-shrink: 0;
    height: 56px !important;
    width: 56px !important;
}

body.ds-student .quick-link-text h5 {
    color: var(--ds-text);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
}

body.ds-student .quick-link-text p {
    color: var(--ds-text-muted);
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 0;
}

body.ds-student .modal-content {
    background: rgba(255, 255, 255, 0.97);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 24px;
    box-shadow: 0 28px 60px rgba(15, 23, 42, 0.16);
    overflow: hidden;
}

body.ds-student .modal-header {
    background: rgba(248, 250, 252, 0.88);
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    padding: 18px 20px 14px;
}

body.ds-student .modal-body {
    padding: 20px;
}

body.ds-student .modal-footer {
    background: rgba(248, 250, 252, 0.72);
    border-top: 1px solid rgba(15, 23, 42, 0.06);
    padding: 14px 20px;
}

body.ds-student .modal-title {
    color: var(--ds-text);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

body.ds-student #purchase-game-time-modal .modal-body label {
    cursor: pointer;
    user-select: none;
}

body.ds-student #level-promotion-modal .modal-body,
body.ds-student #purchase-game-time-modal .modal-body {
    text-align: center;
}

body.ds-student #attempt-details-modal #submittedAnswer,
body.ds-student #attempt-details-modal #correctAnswer {
    background: rgba(248, 250, 252, 0.8);
    border: 1px solid rgba(15, 23, 42, 0.06);
    border-radius: 18px;
    min-height: 64px;
    padding: 14px 16px;
}

body.ds-student-auth {
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0) 26%),
        linear-gradient(180deg, #f5f6f8 0%, #eef1f5 100%);
}

body.ds-student-auth .main-content {
    min-height: calc(100vh - 150px);
    padding: 34px 0 20px;
}

body.ds-student-auth .form-wrapper {
    padding: 32px 28px;
    width: min(100%, 450px);
}

body.ds-student-auth .form-wrapper h4 {
    color: var(--ds-text);
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.03em;
}

body.ds-student-auth .student-auth-footer {
    color: var(--ds-text-muted);
    font-size: 14px;
}

body.ds-student-auth .student-auth-link {
    font-size: 12px;
    font-weight: 600;
}

body.ds-student-select {
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0) 26%),
        linear-gradient(180deg, #f6f7fb 0%, #eef2f7 100%);
}

body.ds-student-select .class-selection-shell {
    padding: 28px 0 36px;
}

body.ds-student-select .class-selection-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.94));
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 28px;
    box-shadow: 0 24px 52px rgba(15, 23, 42, 0.1);
    max-width: 720px;
    padding: 28px;
}

body.ds-student-select .class-option-row {
    align-items: center;
    background: rgba(248, 250, 252, 0.9);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 18px;
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    padding: 14px 16px;
}

body.ds-student-select .class-option-row label {
    cursor: pointer;
    margin-bottom: 0;
}

@media (max-width: 991.98px) {
    body.ds-student .student-navbar-wrapper,
    body.ds-student-auth .student-navbar-wrapper {
        padding-top: 12px;
    }

    body.ds-student .page-title-box h4 {
        font-size: 24px !important;
    }
}

@media (max-width: 767.98px) {
    body.ds-student .student-nav-link {
        min-height: 40px;
        padding: 0 12px !important;
    }

    body.ds-student .page-title-box,
    body.ds-student .student-page-panel,
    body.ds-student .tab-contents,
    body.ds-student .card-body,
    body.ds-student-auth .form-wrapper,
    body.ds-student-select .class-selection-card {
        padding: 18px;
    }

    body.ds-student #tab-button {
        flex-wrap: wrap;
    }

    body.ds-student #tab-button li {
        flex: 1 1 calc(50% - 8px);
    }

    body.ds-student .student-page-actions {
        flex-direction: column;
    }

    body.ds-student .student-page-actions .btn {
        width: 100%;
    }
}