/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg: #f8fafc;
    --bg-card: #ffffff;
    --bg-secondary: #f1f5f9;
    --hamburger: #e2e8f0;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1);
    --radius: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Стили скроллбара для всего приложения */
/* Webkit браузеры (Chrome, Safari, Edge) */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 10px;
    border: 2px solid var(--bg-secondary);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: #94a3b8 var(--bg-secondary);
}

/* Navbar */
.navbar {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    color: var(--secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--primary);
}

.nav-link.btn-link {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    font-size: inherit;
    font-family: inherit;
}

.nav-logout {
    color: var(--danger);
}

.nav-user {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Forms */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text);
}

.form-group input,
.form-group select {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    background-color: var(--bg-card);
    color: var(--text);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-group select option {
    padding: 0.75rem 1rem;
    background-color: var(--bg-card);
    color: var(--text);
}

.form-group select option:hover,
.form-group select option:focus,
.form-group select option:checked {
    background-color: var(--primary);
    color: white;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Placeholder styles - lighter color */
::placeholder {
    color: #94a3b8 !important;
    opacity: 0.7;
}

input::placeholder,
textarea::placeholder {
    color: #94a3b8 !important;
    opacity: 0.7;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-block {
    width: 100%;
}

.btn-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
}

.btn-xs {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

.btn-warning {
    background: var(--warning);
    color: white;
}

.btn-warning:hover {
    background: #d97706;
}

.btn-success {
    background: var(--success);
    color: white;
    font-weight: 600;
}

.btn-success:hover {
    background: #16a34a;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-weight: 500;
}

.alert-error {
    background: #fef2f2;
    color: var(--danger);
    border: 1px solid #fecaca;
}

.alert-success {
    background: #f0fdf4;
    color: var(--success);
    border: 1px solid #bbf7d0;
}

.alert-warning {
    background: #fffbeb;
    color: var(--warning);
    border: 1px solid #fde68a;
}

.alert-info {
    background: #eff6ff;
    color: var(--primary);
    border: 1px solid #bfdbfe;
}

/* Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-admin {
    background: #ede9fe;
    color: #7c3aed;
}

.badge-teacher {
    background: #dbeafe;
    color: #2563eb;
}

.badge-monitor {
    background: #fef3c7;
    color: #d97706;
}

.badge-active {
    background: #dcfce7;
    color: #16a34a;
}

.badge-inactive {
    background: #fee2e2;
    color: #dc2626;
}

.badge-group {
    background: #dbeafe;
    color: #1d4ed8;
    white-space: nowrap;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    border-radius: var(--radius) var(--radius) 0 0;
}

.modal-header h2 {
    font-size: 1.25rem;
}

.modal-close {
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    line-height: 1;
    background: transparent;
    border: none;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.modal-close:hover {
    color: var(--text);
    background: var(--bg-secondary);
}

.modal-close:active {
    background: var(--border);
    transform: scale(0.95);
}

.modal-form {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1rem;
    padding: 0 1.5rem 1.5rem;
}

.modal-form .modal-actions {
    padding: 0;
}

.modal-body {
    padding: 1.5rem;
}

.modal-body p {
    margin-bottom: 0.5rem;
}

.modal-content-sm {
    max-width: 400px;
}

/* Actions Cell */
.actions-cell {
    display: flex;
    gap: 0.5rem;
}

/* Input disabled */
.input-disabled {
    background: var(--bg);
    color: var(--text-muted);
    cursor: not-allowed;
}

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: normal;
}

.checkbox-label input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
}

/* Text helpers */
.text-muted {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.required {
    color: var(--danger);
}

.unregistered {
    color: var(--warning);
    font-size: 0.75rem;
}

code {
    background: var(--bg);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: monospace;
}

code.password {
    background: #fef3c7;
    color: #92400e;
}

/* Form Hint */
.form-hint {
    background: var(--bg);
    padding: 1rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    color: var(--text-muted);
}

.form-hint ul {
    margin: 0.5rem 0 0 1.5rem;
}

.form-hint li {
    margin-bottom: 0.25rem;
}

.form-hint-inline {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Progress Bar */
.progress-container {
    margin: 1rem 0;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary), var(--success));
    border-radius: 4px;
    transition: width 0.3s ease;
}

.progress-text {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    text-align: center;
}

/* File input */
input[type="file"] {
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 100%;
    cursor: pointer;
}

/* Footer */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    padding: 1rem 0;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-phone {
    font-weight: 500;
    color: var(--text);
}

/* Common Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.page-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.page-title h1 {
    margin: 0;
    font-size: 1.5rem;
}

.page-header-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.empty-state p {
    margin-bottom: 0.5rem;
}

/* Table Container - Common Styles */
.table-container {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid var(--border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    position: relative;
}

/* Scrollbar styling for table containers */
.table-container::-webkit-scrollbar {
    height: 8px;
}

.table-container::-webkit-scrollbar-track {
    background: var(--bg);
    border-radius: 4px;
}

.table-container::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.table-container::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

.table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
    word-wrap: break-word;
}

.table th {
    background: var(--bg);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: sticky;
    top: 0;
    z-index: 10;
}

.table tbody tr {
    transition: background-color 0.2s ease;
}

.table tbody tr:last-child td {
    border-bottom: none;
}

.table tbody tr:hover {
    background: var(--bg);
}

.table tbody tr:active {
    background: #f1f5f9;
}

/* Empty state styling */
.table tbody:empty::after {
    content: 'Нет данных для отображения';
    display: block;
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Striped rows option (can be added via class) */
.table.table-striped tbody tr:nth-child(even) {
    background: rgba(248, 250, 252, 0.5);
}

.table.table-striped tbody tr:nth-child(even):hover {
    background: #f8fafc;
}

/* Мобильное меню - бургер и навигация */
.open-main-nav {
    display: none;
    position: absolute;
    top: 21px;
    right: 15px;
    padding: 0.5rem;
    z-index: 1001;
    background: none;
    border: 0;
    cursor: pointer;
}

.open-main-nav:focus {
    outline: none;
}

.burger {
    position: relative;
    display: block;
    width: 28px;
    height: 4px;
    margin: 0 auto;
    background: var(--text);
    transform: skew(5deg);
    transition: all 0.275s;
}

.burger:after,
.burger:before {
    content: '';
    display: block;
    height: 100%;
    background: var(--text);
    transition: all 0.275s;
}

.burger:after {
    transform: translateY(-12px) translateX(-2px) skew(-20deg);
}

.burger:before {
    transform: translateY(-16px) skew(-10deg);
}

.open-main-nav.is-open .burger {
    transform: skew(5deg) translateY(-8px) rotate(-45deg);
}

.open-main-nav.is-open .burger:before {
    transform: translateY(0px) skew(-10deg) rotate(75deg);
}

.open-main-nav.is-open .burger:after {
    transform: translateY(-12px) translateX(10px) skew(-20deg);
    opacity: 0;
}

.burger-text {
    display: block;
    font-size: 0.675rem;
    letter-spacing: 0.05em;
    margin-top: 0.5em;
    text-transform: uppercase;
    font-weight: 500;
    text-align: center;
    color: var(--text);
}

/* Мобильное меню - навигация */
.main-nav {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    text-align: center;
    background: var(--bg-card);
    opacity: 0;
    z-index: -1;
    visibility: hidden;
    transition: all 0.375s;
}

.main-nav.is-open {
    opacity: 1;
    z-index: 1000;
    visibility: visible;
}

/* Цветная полоса эффект */
.main-nav::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: -15px;
    background: var(--hamburger);
    transform-origin: 0 0;
    transform: skew(-14deg) translateX(-120%);
    transition: all 0.275s 0.1s;
}

.main-nav.is-open::before {
    transform: skew(-14deg) translateX(0);
}

/* Эффект наклона на ссылках меню */
.main-nav ul {
    display: inline-flex;
    flex-direction: column;
    height: 100%;
    align-items: flex-end;
    justify-content: center;
    transform: translateX(-18%) skew(-16deg);
    list-style: none;
    padding: 0;
    margin: 0;
}

.main-nav li {
    display: block;
    margin: 0.5rem 0;
    text-align: right;
    transform: skew(16deg);
    list-style: none;
}

/* Эффект появления ссылок */
.main-nav a {
    opacity: 0;
    transform: translateY(-10px);
    display: block;
    padding: 12px 0;
    color: var(--text);
    font-size: 1.4em;
    text-decoration: none;
    font-weight: bold;
    transition: opacity 0.275s, transform 0.275s;
}

.main-nav.is-open a {
    opacity: 1;
    transform: translateY(0);
}

.main-nav li:nth-child(1) a {
    transition: all 275ms 175ms;
}

.main-nav li:nth-child(2) a {
    transition: all 275ms 225ms;
}

.main-nav li:nth-child(3) a {
    transition: all 275ms 275ms;
}

.main-nav li:nth-child(4) a {
    transition: all 275ms 325ms;
}

.main-nav li:nth-child(5) a {
    transition: all 275ms 375ms;
}

.main-nav li:nth-child(6) a {
    transition: all 275ms 425ms;
}

.main-nav li:nth-child(7) a {
    transition: all 275ms 475ms;
}

.main-nav a:hover {
    color: var(--primary);
}

.nav-user-mobile {
    display: block;
    padding: 12px 0;
    color: var(--text-muted);
    font-size: 1.2em;
    font-weight: normal;
}

.nav-logout-mobile {
    color: var(--danger) !important;
}

.nav-logout-mobile:hover {
    color: var(--danger) !important;
    opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
    .open-main-nav {
        display: block;
    }

    .nav-container {
        position: relative;
        min-height: 60px;
    }

    .nav-menu {
        display: none;
    }

    .nav-brand {
        font-size: 1rem;
        padding-right: 70px;
        display: block;
    }

    .main-content {
        padding: 1rem 0;
    }

    .container {
        padding: 0 0.75rem;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 1rem;
    }

    .page-header-actions {
        width: 100%;
        flex-direction: column;
    }

    .page-header-actions .btn {
        width: 100%;
    }

    .modal-content {
        margin: 0.5rem;
        max-width: calc(100% - 1rem);
        max-height: calc(100vh - 1rem);
        border-radius: var(--radius);
    }

    .modal-header {
        padding: 1.25rem 1rem;
    }

    .modal-header h2 {
        font-size: 1.125rem;
    }

    .modal-form {
        padding: 1.25rem 1rem;
    }

    .modal-body {
        padding: 1.25rem 1rem;
    }

    .modal-actions {
        padding: 0 1rem 1.25rem;
        flex-direction: column;
    }

    .modal-actions .btn {
        width: 100%;
    }

    .table-container {
        margin: 0 -0.75rem;
        border-radius: 0;
        border-left: none;
        border-right: none;
        box-shadow: none;
    }


    .table {
        font-size: 0.875rem;
    }

    .table th,
    .table td {
        padding: 0.75rem 0.5rem;
    }

    .btn {
        padding: 0.625rem 1rem;
        font-size: 0.875rem;
    }

    .btn-sm {
        padding: 0.5rem 0.75rem;
        font-size: 0.8125rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .nav-brand {
        font-size: 0.875rem;
    }

    .page-title h1 {
        font-size: 1.25rem;
    }

    .table {
        font-size: 0.8125rem;
    }

    .table th,
    .table td {
        padding: 0.5rem 0.375rem;
    }

    .btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8125rem;
    }
}

/* Toast уведомления */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 350px;
}

.toast {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    animation: toastSlideIn 0.3s ease-out;
    border-left: 4px solid var(--primary);
}

.toast.toast-success {
    border-left-color: var(--success);
}

.toast.toast-error {
    border-left-color: var(--danger);
}

.toast.toast-warning {
    border-left-color: var(--warning);
}

.toast-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.toast-message {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0;
    font-size: 1.25rem;
    line-height: 1;
    opacity: 0.5;
    transition: opacity 0.2s;
}

.toast-close:hover {
    opacity: 1;
}

.toast.toast-fade-out {
    animation: toastSlideOut 0.3s ease-in forwards;
}

@keyframes toastSlideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes toastSlideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

@media (max-width: 480px) {
    .toast-container {
        left: 0.5rem;
        right: 0.5rem;
        max-width: none;
    }
}

/* Модальное окно истории всей системы - стиль скроллбара как в истории журнала */
#systemHistoryModal .modal-content {
    overflow: hidden;
    position: relative;
}

#systemHistoryModal .modal-body {
    padding: 1.5rem;
    padding-right: calc(1.5rem - 10px);
    border-radius: 0 0 var(--radius) var(--radius);
    overflow-y: auto;
    overflow-x: hidden;
    max-height: calc(90vh - 120px);
    margin-right: 10px;
}

#systemHistoryModal .modal-body::-webkit-scrollbar {
    width: 10px;
}

#systemHistoryModal .modal-body::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 0 0 var(--radius) 0;
}

#systemHistoryModal .modal-body::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 0 0 var(--radius) 0;
    border: none;
}