/* Kotlin Učionica theme overrides */

:root {
    --kotlin-indigo: #7F52FF;
    --kotlin-purple: #9E4DFF;
    --kotlin-orange: #FF8A00;
    --kotlin-gradient: linear-gradient(135deg, var(--kotlin-indigo), var(--kotlin-orange));
}

body.kotlin-auth {
    min-height: 100vh;
    background: linear-gradient(160deg, rgba(127, 82, 255, 0.95), rgba(255, 138, 0, 0.9));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    font-family: "Roboto", "Segoe UI", sans-serif;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 18px 45px rgba(38, 30, 96, 0.25);
    padding: 48px 40px;
    position: relative;
    overflow: hidden;
}

.auth-card--wide {
    max-width: 640px;
}

.auth-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(140deg, rgba(127, 82, 255, 0.12), rgba(255, 138, 0, 0.08));
    pointer-events: none;
}

.auth-card__header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-card__badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: rgba(127, 82, 255, 0.1);
    color: var(--kotlin-indigo);
    margin-bottom: 16px;
}

.auth-card__title {
    font-size: 28px;
    font-weight: 700;
    color: #1f1f2b;
    margin: 0;
}

.auth-card__subtitle {
    color: #5b5b71;
    margin-top: 8px;
    font-size: 15px;
}

.auth-card__link {
    display: inline-block;
    margin-top: 12px;
    font-weight: 600;
    color: rgba(127, 82, 255, 0.9);
    text-decoration: none;
    transition: color 0.2s ease;
}

.auth-card__link:hover,
.auth-card__link:focus {
    color: #ff8a00;
    text-decoration: none;
}

.auth-card__alert {
    background: rgba(127, 82, 255, 0.08);
    border: none;
    border-radius: 16px;
    color: #3b2f62;
    padding: 16px 18px;
    margin-bottom: 24px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.auth-card__alert--error {
    background: rgba(220, 53, 69, 0.12);
    color: #842029;
}

.auth-card__form {
    margin-top: 24px;
}

.auth-card__footer {
    margin-top: 28px;
    text-align: center;
}

.auth-card__support {
    margin: 0 0 8px;
    font-size: 13px;
    color: #5b5b71;
}

.auth-card__support i {
    margin-right: 6px;
    color: rgba(127, 82, 255, 0.9);
}

.auth-card__status-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    font-size: 30px;
    color: #ffffff;
    box-shadow: 0 12px 24px rgba(127, 82, 255, 0.25);
}

.auth-card__status-icon--info {
    background: var(--kotlin-gradient);
}

.auth-card__status-icon--success {
    background: linear-gradient(140deg, #34c759, #0a9952);
    box-shadow: 0 12px 24px rgba(10, 153, 82, 0.25);
}

.auth-card__message {
    font-size: 14px;
    color: #4b4b63;
    text-align: center;
    margin-bottom: 18px;
}

.auth-card__countdown {
    margin-top: 16px;
    color: #8585a1;
    font-size: 12px;
}

.auth-card__countdown span {
    font-weight: 600;
    color: rgba(127, 82, 255, 0.9);
}

.profile-layout {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.profile-header {
    background: linear-gradient(135deg, rgba(127, 82, 255, 0.95), rgba(255, 138, 0, 0.9));
    color: #ffffff;
    border-radius: 24px;
    padding: 32px 36px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    box-shadow: 0 24px 46px rgba(23, 28, 56, 0.28);
}

.profile-header__icon {
    width: 72px;
    height: 72px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.18);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
}

.profile-header__body {
    flex: 1 1 260px;
    min-width: 220px;
}

.profile-header__title {
    margin: 0;
    font-size: 28px;
    font-weight: 700;
}

.profile-header__subtitle {
    margin-top: 10px;
    margin-bottom: 14px;
    font-size: 15px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.86);
}

.profile-header__meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.78);
}

.profile-header__name {
    font-weight: 600;
    font-size: 16px;
    color: #ffffff;
}

.profile-header__email {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.78);
}

.profile-header__cta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.profile-header__cta .btn {
    border: 1px solid rgba(255, 255, 255, 0.7);
    color: #ffffff;
    background: transparent;
    padding: 10px 18px;
    transition: background 0.2s ease, transform 0.2s ease;
}

.profile-header__cta .btn:hover,
.profile-header__cta .btn:focus {
    background: rgba(255, 255, 255, 0.18);
    color: #ffffff;
    transform: translateY(-1px);
}

.profile-card {
    background: #ffffff;
    border-radius: 24px;
    box-shadow: 0 22px 48px rgba(17, 27, 45, 0.16);
    padding: 32px 36px;
}

.profile-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.profile-form__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px 24px;
}

.profile-form__group {
    display: flex;
    flex-direction: column;
}

.profile-form__label {
    font-weight: 600;
    color: #2c2c3a;
    margin-bottom: 6px;
}

.profile-form__input {
    border-radius: 16px;
    border: 1px solid #d9d9e8;
    padding: 12px 14px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.profile-form__input:focus {
    border-color: rgba(127, 82, 255, 0.65);
    box-shadow: 0 0 0 3px rgba(127, 82, 255, 0.15);
}

.profile-form__group--error .profile-form__label {
    color: #b42332;
}

.profile-form__group--error .profile-form__input {
    border-color: rgba(220, 53, 69, 0.75);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.12);
}

.profile-form__error {
    margin-top: 6px;
    font-size: 12px;
    color: #b42332;
}

.profile-form__actions {
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 12px;
}

.profile-form__btn-secondary {
    background: #f5f5fb;
    border: 1px solid #dcdcf5;
    color: #42425f;
    padding: 10px 18px;
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.profile-form__btn-secondary:hover,
.profile-form__btn-secondary:focus {
    background: #ececff;
    color: #2b2b43;
    transform: translateY(-1px);
}

.profile-alert {
    display: flex;
    align-items: center;
    gap: 12px;
    border-radius: 14px;
    padding: 12px 16px;
    font-size: 14px;
}

.profile-alert i {
    font-size: 18px;
}

.profile-alert--success {
    background: rgba(46, 204, 113, 0.12);
    color: #0f7a45;
}

.profile-alert--error {
    background: rgba(220, 53, 69, 0.12);
    color: #842029;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(240px, 1fr));
    gap: 18px 32px;
}

.detail-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding-bottom: 12px;
    border-bottom: 1px solid #edf0f7;
}

.detail-field--full {
    grid-column: 1 / -1;
}

.detail-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #7b7b93;
    font-weight: 600;
}

.detail-value {
    font-size: 16px;
    color: #1f1f2b;
    font-weight: 600;
}

.detail-value--chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    font-weight: 400;
}

.detail-chip {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(127, 82, 255, 0.12);
    color: var(--kotlin-indigo);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    gap: 6px;
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.detail-chip:hover,
.detail-chip:focus {
    background: rgba(127, 82, 255, 0.2);
    color: #5a3ad0;
    transform: translateY(-1px);
}

.status-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-chip--active {
    background: rgba(46, 204, 113, 0.15);
    color: #0a7a3a;
}

.status-chip--inactive {
    background: rgba(220, 53, 69, 0.15);
    color: #842029;
}

.admin-page-row {
    margin-left: 0;
    margin-right: 0;
}

.admin-page-row > [class^="col-"] {
    padding-left: 0;
    padding-right: 0;
}

.confirm-card {
    background: #ffffff;
    border-radius: 24px;
    box-shadow: 0 24px 42px rgba(31, 34, 61, 0.18);
    padding: 32px 36px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.confirm-card--danger {
    border: 1px solid rgba(220, 53, 69, 0.25);
    background: linear-gradient(150deg, rgba(220, 53, 69, 0.12), rgba(255, 145, 0, 0.06));
}

.confirm-card__icon {
    width: 84px;
    height: 84px;
    border-radius: 50%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: #ffffff;
    background: linear-gradient(135deg, #ff4d6d, #e11d48);
    box-shadow: 0 16px 32px rgba(225, 29, 72, 0.35);
}

.confirm-card__title {
    font-size: 26px;
    font-weight: 700;
    color: #1f1f2b;
    margin: 0;
}

.confirm-card__subtitle {
    margin: 0;
    font-size: 15px;
    color: #4d4d63;
}

.confirm-card__warning {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 193, 7, 0.18);
    color: #8a5b00;
    padding: 10px 18px;
    border-radius: 14px;
    font-weight: 600;
    justify-content: center;
}

.confirm-card__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(220px, 1fr));
    gap: 16px 24px;
    text-align: left;
}

.confirm-card__grid-item {
    background: rgba(255, 255, 255, 0.6);
    border-radius: 18px;
    padding: 14px 18px;
    border: 1px solid rgba(127, 82, 255, 0.12);
}

.confirm-card__grid-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #7b7b93;
    font-weight: 600;
}

.confirm-card__grid-value {
    display: block;
    margin-top: 6px;
    font-size: 16px;
    font-weight: 600;
    color: #1f1f2b;
}

.confirm-card__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.confirm-card__actions .btn {
    min-width: 160px;
}

.confirm-card__actions .btn-danger {
    background: linear-gradient(135deg, #ff4d6d, #e11d48);
    border: none;
    color: #ffffff;
    box-shadow: 0 12px 28px rgba(225, 29, 72, 0.32);
}

.confirm-card__actions .btn-danger:hover,
.confirm-card__actions .btn-danger:focus {
    color: #ffffff;
    transform: translateY(-1px);
}

.confirm-card__actions .btn-outline {
    border-color: rgba(31, 34, 61, 0.18);
    color: #1f223d;
}

.confirm-card__actions .btn-outline:hover,
.confirm-card__actions .btn-outline:focus {
    border-color: rgba(31, 34, 61, 0.28);
    color: #0f111f;
}

@media (max-width: 768px) {
    .detail-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .profile-header {
        padding: 28px;
    }

    .confirm-card {
        padding: 28px;
    }

    .confirm-card__grid {
        grid-template-columns: 1fr;
    }

    .confirm-card__icon {
        width: 72px;
        height: 72px;
        font-size: 30px;
    }
}

@media (max-width: 576px) {
    .profile-card {
        padding: 24px;
    }

    .profile-header__cta {
        width: 100%;
        justify-content: flex-start;
    }
}

.form-control:focus {
    border-color: rgba(127, 82, 255, 0.6);
    box-shadow: 0 0 0 2px rgba(127, 82, 255, 0.2);
}

.btn-kotlin {
    background: var(--kotlin-gradient);
    border: none;
    border-radius: 999px;
    color: #ffffff;
    font-weight: 600;
    padding: 12px 20px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-kotlin:hover,
.btn-kotlin:focus {
    color: #ffffff;
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(127, 82, 255, 0.25);
}

.link-light {
    color: rgba(255, 255, 255, 0.92);
}

.link-light:hover,
.link-light:focus {
    color: #ffffff;
    text-decoration: underline;
}

.navbar-kotlin {
    background: var(--kotlin-gradient);
    border: none;
    box-shadow: 0 6px 20px rgba(51, 45, 100, 0.25);
}

.navbar-kotlin .navbar-brand,
.navbar-kotlin .navbar-nav > li > a,
.navbar-kotlin .navbar-nav > li > a:focus {
    color: #ffffff !important;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.navbar-kotlin .navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
}

.navbar-kotlin .navbar-brand .brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.2);
    color: #ffffff;
    font-weight: 700;
    font-size: 16px;
}

.navbar-kotlin .navbar-toggle .icon-bar {
    background-color: #ffffff;
}

.navbar-kotlin .navbar-toggle {
    border-color: rgba(255, 255, 255, 0.4);
}

.top-nav > li > a,
.navbar-kotlin .navbar-right > li > a {
    color: #ffffff !important;
}

.top-nav > li > a:hover,
.navbar-kotlin .navbar-right > li > a:hover,
.navbar-kotlin .navbar-right > li.open > a {
    background: rgba(255, 255, 255, 0.15) !important;
    color: #ffffff !important;
}

.side-nav {
    background: #1f1f2b;
}

.side-nav > li > a {
    color: rgba(255, 255, 255, 0.8);
}

.side-nav > li.active > a,
.side-nav > li > a:hover {
    background: rgba(127, 82, 255, 0.4) !important;
    color: #ffffff !important;
}

.navbar-kotlin .navbar-nav > li > a:hover,
.navbar-kotlin .navbar-nav > li.active > a {
    background-color: rgba(255, 255, 255, 0.12) !important;
    color: #ffffff !important;
}

.btn-rounded {
    border-radius: 999px;
}

.card-gradient {
    background: linear-gradient(120deg, rgba(127, 82, 255, 0.12), rgba(255, 138, 0, 0.12));
    border-radius: 20px;
    border: none;
    padding: 24px 28px;
}

.kotlin-badge {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 999px;
    padding: 4px 12px;
    font-size: 12px;
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
}

@media (max-width: 576px) {
    .auth-card {
        padding: 32px 24px;
    }

    .auth-card__title {
        font-size: 24px;
    }
}

/* Lessons Page */
.lessons-header {
    margin-bottom: 32px;
}

.lessons-header__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(120deg, rgba(127, 82, 255, 0.2), rgba(255, 138, 0, 0.2));
    color: var(--kotlin-indigo);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 12px;
    margin-bottom: 16px;
}

.lessons-header__title {
    font-size: 32px;
    font-weight: 700;
    color: #1f1f2b;
    margin: 0 0 12px;
}

.lessons-header__subtitle {
    color: #5b5b71;
    font-size: 15px;
    max-width: 620px;
}

.lessons-card {
    position: relative;
    background: var(--kotlin-gradient);
    border-radius: 24px;
    padding: 24px 26px;
    color: #ffffff;
    box-shadow: 0 20px 38px rgba(44, 29, 107, 0.28);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    min-height: 340px;
    margin-bottom: 28px;
}

.lessons-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.04));
    mix-blend-mode: screen;
    pointer-events: none;
}

.lessons-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 28px 48px rgba(44, 29, 107, 0.32);
}

.lessons-card__header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 18px;
    position: relative;
    z-index: 1;
}

.lessons-card__icon-wrap {
    width: 52px;
    height: 52px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lessons-card__icon {
    font-size: 24px;
    color: #ffffff;
}

.lessons-card__title-group {
    flex: 1;
}

.lessons-card__title {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.3;
    color: #ffffff;
}

.lessons-card__badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.22);
    color: #ffffff;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-top: 6px;
}

.lessons-card__body {
    position: relative;
    z-index: 1;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
}

.lessons-card__description {
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
    margin-bottom: 18px;
    line-height: 1.45;
    min-height: 66px;
    max-height: 66px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.lessons-card__progress .progress {
    background: rgba(255, 255, 255, 0.25);
    border-radius: 999px;
    height: 8px;
    margin-bottom: 10px;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.lessons-card__progress .progress-bar {
    background: rgba(255, 255, 255, 0.92);
    color: var(--kotlin-indigo);
    font-size: 11px;
    font-weight: 600;
    border-radius: 999px;
    box-shadow: 0 6px 14px rgba(255, 255, 255, 0.35);
}

.lessons-card__progress-text {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.9);
}

.lessons-card__empty {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 0;
}

.lessons-card__progress,
.lessons-card__empty {
    flex: 0 0 auto;
}

.lessons-card__footer {
    margin-top: auto;
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: flex-start;
}

.lessons-card__footer .btn {
    padding: 10px 18px;
    font-size: 13px;
}

.lessons-card__footer .fa {
    margin-right: 6px;
}

.lessons-empty {
    background: rgba(127, 82, 255, 0.08);
    border-radius: 16px;
    padding: 20px 24px;
    border: 1px dashed rgba(127, 82, 255, 0.3);
    color: #4a4a63;
}

/* Admin Dashboard */
.admin-dashboard {
    margin-top: 10px;
}

.admin-dashboard__welcome-card {
    background: var(--kotlin-gradient);
    border-radius: 24px;
    padding: 28px 32px;
    color: #ffffff;
    display: flex;
    align-items: flex-start;
    gap: 24px;
    box-shadow: 0 24px 40px rgba(54, 34, 110, 0.3);
    margin-bottom: 28px;
}

.admin-dashboard__welcome-icon {
    width: 64px;
    height: 64px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.22);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
}

.admin-dashboard__welcome-content h2 {
    margin-top: 0;
    margin-bottom: 12px;
    font-weight: 700;
    font-size: 28px;
    color: #ffffff;
}

.admin-dashboard__welcome-content p {
    color: rgba(255, 255, 255, 0.92);
    margin-bottom: 18px;
    line-height: 1.6;
}

.admin-dashboard__badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.admin-dashboard__badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    padding: 6px 14px;
    font-size: 12px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.admin-dashboard__actions-card {
    background: #ffffff;
    border-radius: 20px;
    padding: 24px 26px;
    box-shadow: 0 18px 32px rgba(31, 41, 55, 0.12);
    margin-bottom: 28px;
}

.admin-dashboard__actions-card h3 {
    margin-top: 0;
    font-size: 18px;
    font-weight: 700;
    color: #1f1f2b;
}

.admin-dashboard__actions-card p {
    font-size: 13px;
    color: #6b6b88;
    margin-bottom: 18px;
}

.admin-dashboard__actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-outline {
    border-radius: 999px;
    border: 1px solid rgba(127, 82, 255, 0.4);
    color: var(--kotlin-indigo);
    font-weight: 600;
    background: transparent;
    transition: all 0.2s ease;
    padding: 10px 18px;
}

.btn-outline:hover,
.btn-outline:focus {
    color: #ffffff;
    background: var(--kotlin-indigo);
    border-color: var(--kotlin-indigo);
}

.admin-dashboard__stats {
    margin-bottom: 20px;
}

.admin-stat-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 22px 24px;
    border-radius: 22px;
    color: #ffffff;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    box-shadow: 0 18px 30px rgba(44, 29, 107, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    margin-bottom: 24px;
}

.admin-stat-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(140deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.04));
    mix-blend-mode: screen;
}

.admin-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 24px 40px rgba(44, 29, 107, 0.25);
}

.admin-stat-card__icon {
    width: 56px;
    height: 56px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.22);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    position: relative;
    z-index: 1;
}

.admin-stat-card__info {
    position: relative;
    z-index: 1;
}

.admin-stat-card__label {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 6px;
    opacity: 0.85;
}

.admin-stat-card__value {
    font-size: 30px;
    font-weight: 700;
    line-height: 1;
}

.admin-stat-card__link {
    font-size: 12px;
    margin-top: 6px;
    opacity: 0.75;
}

.admin-stat-card--students {
    background: linear-gradient(135deg, #7F52FF, #5C9DFF);
}

.admin-stat-card--tests {
    background: linear-gradient(135deg, #FF8A00, #FF5F6D);
}

.admin-stat-card--lessons {
    background: linear-gradient(135deg, #ff7eb3, #ff758c);
}

.admin-stat-card--tasks {
    background: linear-gradient(135deg, #46c8ba, #2ea6ff);
}

.admin-dashboard__summary-card {
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 18px 32px rgba(31, 41, 55, 0.12);
    padding: 22px 26px;
    margin-bottom: 24px;
}

.admin-dashboard__summary-card h3 {
    margin-top: 0;
    font-size: 18px;
    font-weight: 700;
    color: #1f1f2b;
    margin-bottom: 16px;
}

.admin-dashboard__list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.admin-dashboard__list-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #4a4a63;
    font-weight: 600;
}

.admin-dashboard__list-label .fa {
    color: var(--kotlin-indigo);
}

.admin-dashboard__list-value {
    float: right;
    font-weight: 700;
    color: #1f1f2b;
}

@media (max-width: 992px) {
    .admin-dashboard__welcome-card {
        flex-direction: column;
    }

    .admin-dashboard__welcome-icon {
        width: 54px;
        height: 54px;
        font-size: 22px;
    }
}

/* Admin CRUD Pages */
.admin-page-header {
    margin-bottom: 28px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.admin-page-title {
    margin: 0;
    font-size: 26px;
    font-weight: 700;
    color: #1f1f2b;
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-page-title__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: rgba(127, 82, 255, 0.12);
    color: var(--kotlin-indigo);
}

.admin-page-title__text {
    font-size: 24px;
    font-weight: 700;
    color: #1f1f2b;
    display: block;
}

.admin-page-title__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 8px;
}

.admin-page-subtitle {
    flex: 1 1 100%;
    margin: 0;
    color: #61617a;
    font-size: 14px;
    line-height: 1.6;
}

.admin-page-actions {
    display: flex;
    gap: 10px;
}

.admin-card {
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 20px 38px rgba(31, 41, 55, 0.12);
    padding: 24px 26px;
}

.admin-card--padded {
    padding: 28px 30px;
}

.admin-card__body {
    margin: 0;
}



.admin-card__footer {
    margin-top: 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.admin-card__footer--actions {
    justify-content: flex-end;
}

.admin-table {
    margin-bottom: 0;
    border-radius: 18px;
    overflow: hidden;
}

.admin-table thead {
    background: rgba(127, 82, 255, 0.08);
}

.admin-table th {
    border-bottom: none;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #5a5a74;
    font-weight: 700;
}

.admin-table td {
    vertical-align: middle;
    color: #2f2f3d;
}

.admin-filters {
    margin-bottom: 20px;
}

.admin-filter-form {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 16px;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 20px 38px rgba(31, 41, 55, 0.08);
    padding: 20px 24px;
}

.admin-filter-group {
    min-width: 220px;
}

.admin-filter-group label {
    font-size: 12px;
    text-transform: uppercase;
    font-weight: 700;
    color: #5a5a74;
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 6px;
}

.admin-filter-actions {
    display: flex;
    gap: 12px;
    margin-left: auto;
}

.admin-filter-actions .btn + .btn {
    margin-left: 0;
}

.admin-tabs {
    margin-bottom: 18px;
}

.admin-tabs .nav-tabs {
    border-bottom: 1px solid rgba(127, 82, 255, 0.2);
}

.admin-tabs .nav-tabs > li > a {
    border: none;
    padding: 10px 16px;
    color: #61617a;
    font-weight: 600;
}

.admin-tabs .nav-tabs > li.active > a,
.admin-tabs .nav-tabs > li.active > a:focus,
.admin-tabs .nav-tabs > li.active > a:hover {
    color: var(--kotlin-indigo);
    background-color: transparent;
    border: none;
    border-bottom: 2px solid var(--kotlin-indigo);
}

.admin-tabs .nav-tabs > li > a:hover {
    background-color: rgba(127, 82, 255, 0.08);
}

.admin-filters--double .admin-filter-form {
    flex-wrap: wrap;
}

.admin-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-bottom: 24px;
}

.admin-card--metric .admin-card__header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}

.admin-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: rgba(127, 82, 255, 0.12);
    color: var(--kotlin-indigo);
    font-size: 20px;
}

.admin-card--metric h4 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
}

.admin-card--metric p {
    margin: 0;
    color: #61617a;
}

.admin-highlight {
    display: flex;
    gap: 24px;
    margin-bottom: 20px;
}

.admin-highlight__stat {
    flex: 1;
    background: rgba(127, 82, 255, 0.08);
    border-radius: 16px;
    padding: 14px 16px;
}

.admin-highlight__label {
    display: block;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #5a5a74;
    margin-bottom: 6px;
}

.admin-highlight__value {
    font-size: 20px;
    font-weight: 700;
    color: #1f1f2b;
}

@media (max-width: 1024px) {
    .admin-cards-grid {
        grid-template-columns: 1fr;
    }

    .admin-highlight {
        flex-direction: column;
    }

    .admin-filter-form {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-filter-actions {
        margin-left: 0;
        justify-content: flex-start;
        gap: 10px;
    }
}

@media (max-width: 768px) {
    .admin-filter-form {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-filter-actions {
        margin-left: 0;
        justify-content: space-between;
    }
}

.admin-empty-state {
    text-align: center;
    padding: 48px 16px;
    color: #61617a;
}

.admin-empty-state .fa {
    font-size: 36px;
    color: var(--kotlin-indigo);
    margin-bottom: 12px;
}

.admin-empty-state h4 {
    font-weight: 700;
    color: #2f2f3d;
    margin-top: 0;
}

.btn-group .btn-outline {
    border-radius: 999px !important;
}

.btn-outline.text-danger {
    color: #e53935;
    border-color: rgba(229, 57, 53, 0.4);
}

.student-group-badge {
    display: inline-block;
    margin-right: 6px;
    margin-bottom: 4px;
    background-color: rgba(127, 82, 255, 0.15);
    color: #7f52ff;
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 600;
}

.btn-outline.text-danger:hover,
.btn-outline.text-danger:focus {
    background: #e53935;
    border-color: #e53935;
    color: #ffffff;
}

.admin-form-inline {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.admin-form-inline .admin-form-group {
    margin-bottom: 0;
}

.admin-form {
    margin: 0;
}

.admin-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px 24px;
}

.admin-form-group label {
    font-weight: 600;
    color: #2f2f3d;
    margin-bottom: 6px;
}

.admin-form-group input,
.admin-form-group textarea,
.admin-form-group select {
    border-radius: 12px;
    border: 1px solid rgba(127, 82, 255, 0.18);
    box-shadow: inset 0 1px 2px rgba(31, 41, 55, 0.05);
}

.admin-form-group input:focus,
.admin-form-group textarea:focus,
.admin-form-group select:focus {
    border-color: rgba(127, 82, 255, 0.6);
    box-shadow: 0 0 0 2px rgba(127, 82, 255, 0.15);
}

.admin-form-group--wide {
    grid-column: span 2;
}

.admin-form-group--inline {
    display: flex;
    flex-direction: column;
}

.admin-form-radio-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.admin-form-radio-group .radio-inline {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    color: #3a3a52;
}

.admin-card__footer {
    border-top: 1px solid rgba(127, 82, 255, 0.12);
    padding-top: 16px;
    display: flex;
    gap: 10px;
}

.switch {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.switch input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

.admin-test-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.admin-test-info__item {
    background: rgba(127, 82, 255, 0.08);
    border-radius: 16px;
    padding: 16px 18px;
}

.admin-test-info__label {
    display: block;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 11px;
    color: #666684;
    margin-bottom: 6px;
    font-weight: 600;
}

.admin-test-info__value {
    font-size: 16px;
    font-weight: 700;
    color: #1f1f2b;
}

@media (max-width: 768px) {
    .admin-page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .admin-page-actions {
        width: 100%;
        justify-content: stretch;
    }
    
    .admin-page-actions .btn {
        flex: 1 1 auto;
        text-align: center;
    }
}