:root{
    --primary:#4f46e5;
    --primary-dark:#4338ca;
    --primary-light:#eef2ff;
    --bg:#f8fafc;
    --card:#ffffff;
    --text:#1e293b;
    --muted:#64748b;
    --border:#e2e8f0;
    --danger:#ef4444;
    --success:#10b981;
    --radius:12px;
    --shadow:0 8px 24px rgba(79,70,229,.10);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
    font-family:'Segoe UI',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;
    background:var(--bg);
    color:var(--text);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}

/* Topbar */
.topbar{
    background:var(--card);
    border-bottom:1px solid var(--border);
    padding:0 24px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    min-height:64px;
    position:sticky;top:0;z-index:100;
    flex-wrap:wrap;
}
.topbar .logo{
    font-size:1.35rem;
    font-weight:700;
    color:var(--primary);
    text-decoration:none;
    letter-spacing:.3px;
}
.topbar nav{display:flex;gap:2px;flex-wrap:wrap;align-items:center}
.topbar nav a{
    padding:8px 12px;
    border-radius:8px;
    color:var(--text);
    font-size:.88rem;
    transition:background .15s,color .15s;
    text-decoration:none;
}
.topbar nav a:hover{background:var(--primary-light);color:var(--primary)}
.topbar nav a.logout{color:var(--danger);margin-left:8px}

/* Layout */
.container{max-width:1400px;margin:0 auto;padding:28px 24px 60px}
h1{font-size:1.7rem;margin-bottom:20px;font-weight:700}
h2{font-size:1.2rem;margin:20px 0 12px;font-weight:600}
h3{font-size:1rem;margin:16px 0 8px;font-weight:600;color:var(--muted)}
p.subtitle{color:var(--muted);margin-bottom:20px;font-size:.92rem}

/* Alerts */
.alert{
    padding:12px 16px;
    border-radius:10px;
    margin-bottom:20px;
    font-size:.92rem;
}
.alert.ok{background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0}
.alert.error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}

/* Cards */
.cards{
    display:grid;
    grid-template-columns:repeat(auto-fill,minmax(230px,1fr));
    gap:18px;
    margin-top:8px;
}
.card{
    background:var(--card);
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:22px;
    text-decoration:none;
    color:var(--text);
    transition:box-shadow .18s,transform .18s,border-color .18s;
    display:block;
}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px);border-color:var(--primary);text-decoration:none}
.card h2{font-size:1.05rem;color:var(--primary);margin:0 0 6px}
.card p{font-size:.85rem;color:var(--muted);margin:0}

/* Forms */
.crud-form{
    background:var(--card);
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:18px;
    margin-bottom:24px;
    display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end;
}
.crud-form .field{display:flex;flex-direction:column;gap:4px;min-width:150px;flex:1 1 150px}
.crud-form label{font-size:.78rem;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.4px}
.crud-form input,.crud-form select{
    padding:9px 12px;
    border:1px solid var(--border);
    border-radius:8px;
    font-size:.9rem;
    font-family:inherit;
    background:#fff;
    color:var(--text);
    transition:border-color .15s,box-shadow .15s;
    width:100%;
}
.crud-form input:focus,.crud-form select:focus{
    outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.12);
}
.crud-form button{
    padding:10px 20px;
    border:none;border-radius:8px;
    background:var(--primary);color:#fff;
    font-size:.9rem;font-weight:600;
    cursor:pointer;font-family:inherit;
    transition:background .15s;
    align-self:flex-end;
}
.crud-form button:hover{background:var(--primary-dark)}

.btn{
    display:inline-block;
    padding:9px 18px;
    border-radius:8px;
    background:var(--card);
    color:var(--text);
    border:1px solid var(--border);
    font-size:.88rem;
    cursor:pointer;
    font-family:inherit;
    text-decoration:none;
    transition:background .15s,border-color .15s;
}
.btn:hover{background:var(--primary-light);border-color:var(--primary);text-decoration:none}
.btn-primary{
    background:var(--primary);color:#fff;border-color:var(--primary);
}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff}
.btn-danger{color:var(--danger);border-color:#fecaca}
.btn-danger:hover{background:#fef2f2;border-color:var(--danger)}

/* Tables */
.table-wrap{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;overflow-x:auto}
.data-table{width:100%;border-collapse:collapse;font-size:.9rem}
.data-table th,.data-table td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--border)}
.data-table th{background:#f1f5f9;font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.4px;color:var(--muted)}
.data-table tr:last-child td{border-bottom:none}
.data-table tbody tr:hover{background:#fafbff}
.data-table td.actions{white-space:nowrap;text-align:right}
.data-table td.actions form{display:inline-block}

/* Schedule grid */
.schedule-controls{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:22px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.schedule-controls form{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.schedule-controls select{padding:9px 12px;border:1px solid var(--border);border-radius:8px;font-size:.9rem;font-family:inherit;background:#fff;min-width:180px}

.schedule-wrap{overflow:auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:8px}
.schedule-table{width:100%;border-collapse:separate;border-spacing:4px;font-size:.82rem;table-layout:fixed}
.schedule-table th{
    background:#f1f5f9;padding:8px;border-radius:8px;
    font-size:.78rem;text-transform:uppercase;letter-spacing:.4px;color:var(--muted);
    text-align:center;
}
.schedule-table td{
    background:#fafbff;
    border:1px solid var(--border);
    border-radius:8px;
    padding:6px;
    vertical-align:top;
    min-height:62px;
    min-width:110px;
    cursor:pointer;
    transition:background .15s,box-shadow .15s;
    position:relative;
}
.schedule-table td:hover{background:#eef2ff;box-shadow:0 0 0 2px rgba(79,70,229,.18) inset}
.schedule-table td.empty-slot::before{content:'';display:block;min-height:52px}
.schedule-table td.first-col{background:transparent;border:none;cursor:default;min-width:80px;width:80px;text-align:center;padding:4px}
.schedule-table td.first-col:hover{background:transparent;box-shadow:none}
.schedule-table td.first-col strong{display:block;font-size:1.05rem;color:var(--primary)}
.schedule-table td.first-col small{color:var(--muted);font-size:.7rem}

.lesson{
    background:#eef2ff;
    border-left:3px solid var(--primary);
    border-radius:6px;
    padding:6px 8px;
    margin-bottom:4px;
    font-size:.8rem;
    line-height:1.35;
}
.lesson:last-child{margin-bottom:0}
.lesson .subj{font-weight:600;color:var(--text)}
.lesson .meta{color:var(--muted);font-size:.74rem}
.lesson.is-fixed{background:#fef3c7;border-left-color:#f59e0b}
.lesson.is-group{background:#e0e7ff}
.lesson .pin{position:absolute;top:4px;right:4px;font-size:.85rem;cursor:pointer;opacity:.6}
.lesson .pin:hover{opacity:1}

/* Login */
.login-page{
    display:flex;align-items:center;justify-content:center;
    min-height:100vh;
    background:linear-gradient(135deg,#4f46e5 0%,#7c3aed 100%);
    padding:20px;
}
.login-box{
    background:#fff;padding:40px 36px;border-radius:18px;
    width:100%;max-width:400px;
    box-shadow:0 24px 60px rgba(0,0,0,.25);
}
.login-box h1{text-align:center;color:var(--primary);margin-bottom:4px}
.login-box p{text-align:center;color:var(--muted);margin-bottom:26px;font-size:.9rem}
.login-box input{
    width:100%;padding:12px 16px;margin-bottom:12px;
    border:1px solid var(--border);border-radius:10px;
    font-size:1rem;font-family:inherit;
    transition:border-color .15s,box-shadow .15s;
}
.login-box input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.15)}
.login-box button{
    width:100%;padding:12px;background:var(--primary);color:#fff;
    border:none;border-radius:10px;font-size:1rem;font-weight:600;
    cursor:pointer;font-family:inherit;transition:background .15s;
}
.login-box button:hover{background:var(--primary-dark)}

/* Footer */
.footer{text-align:center;padding:22px;color:var(--muted);font-size:.8rem}

/* Helpers */
.muted{color:var(--muted)}
.mt-2{margin-top:16px}
.mb-2{margin-bottom:16px}
.row-actions{display:flex;gap:6px;justify-content:flex-end;flex-wrap:wrap}
.difficulty-preview{font-size:.8rem;color:var(--muted);align-self:center;padding:0 8px}
small{color:var(--muted)}

/* Modal */
.modal-backdrop{
    position:fixed;inset:0;background:rgba(15,23,42,.55);
    display:flex;align-items:center;justify-content:center;
    z-index:1000;padding:16px;backdrop-filter:blur(2px);
}
.modal{
    background:#fff;border-radius:14px;padding:24px;
    width:100%;max-width:520px;
    box-shadow:0 24px 60px rgba(0,0,0,.35);
    max-height:90vh;overflow-y:auto;
}
.modal h2{margin-top:0;color:var(--primary)}
.modal .modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}
.modal input,.modal select{
    width:100%;padding:10px 12px;margin-bottom:12px;
    border:1px solid var(--border);border-radius:8px;font-size:.92rem;font-family:inherit;
}
.modal label{display:block;font-size:.8rem;color:var(--muted);font-weight:600;margin-bottom:4px;text-transform:uppercase;letter-spacing:.4px}

/* Empty state */
.empty{
    text-align:center;padding:48px 20px;color:var(--muted);
    background:var(--card);border:1px dashed var(--border);border-radius:var(--radius);
}
.empty p{margin-bottom:14px}

/* ===== Модальные окна ===== */
.modal-wide{max-width:720px}
.modal-narrow{max-width:480px}

.form-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
    gap:12px;
    margin-bottom:16px;
}
.form-grid .form-field{display:flex;flex-direction:column;gap:4px}
.form-grid .form-field.full{grid-column:1 / -1}
.form-grid .form-field label{
    font-size:.78rem;color:var(--muted);font-weight:600;
    text-transform:uppercase;letter-spacing:.4px;
}
.form-grid .form-field input,
.form-grid .form-field select{
    padding:9px 12px;border:1px solid var(--border);border-radius:8px;
    font-size:.9rem;font-family:inherit;background:#fff;color:var(--text);
    transition:border-color .15s,box-shadow .15s;width:100%;
}
.form-grid .form-field input:focus,
.form-grid .form-field select:focus{
    outline:none;border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(79,70,229,.12);
}
.form-grid .form-field input:read-only{background:#f1f5f9;color:var(--muted)}

.modal-actions-full{
    display:flex;gap:10px;justify-content:flex-end;
    margin-top:20px;padding-top:16px;border-top:1px solid var(--border);
}

/* ===== Массовый выбор ===== */
.bulk-bar{
    display:flex;gap:12px;align-items:center;
    padding:10px 14px;background:#f1f5f9;
    border-radius:8px;margin-bottom:12px;min-height:44px;
    transition:background .15s;
}
.bulk-bar.active{background:#eef2ff;border:1px solid #c7d2fe}
.bulk-bar .bulk-info{font-size:.9rem;color:var(--muted)}
.bulk-bar .bulk-info strong{color:var(--primary);font-weight:600}
.bulk-bar .bulk-actions{margin-left:auto;display:flex;gap:8px}

.data-table td.check-col,
.data-table th.check-col{width:36px;text-align:center;padding:8px 4px}
.data-table input[type="checkbox"]{
    width:18px;height:18px;cursor:pointer;accent-color:var(--primary);
}

.link-btn{
    background:none;border:none;color:var(--primary);cursor:pointer;
    font-size:.88rem;font-family:inherit;padding:6px 10px;border-radius:6px;
    transition:background .15s,color .15s;
}
.link-btn:hover{background:var(--primary-light);text-decoration:none}
.link-btn.danger{color:var(--danger)}
.link-btn.danger:hover{background:#fef2f2}
.link-btn.small{font-size:.8rem;padding:4px 8px}

.row-actions{display:flex;gap:2px;justify-content:flex-end;flex-wrap:wrap}

/* ===== Кнопка "Добавить" в тулбаре ===== */
.toolbar{
    display:flex;gap:12px;flex-wrap:wrap;align-items:center;
    margin-bottom:18px;
}
.toolbar .toolbar-title{
    font-size:.9rem;color:var(--muted);margin-right:auto;
}

/* ============ TOAST-УВЕДОМЛЕНИЯ ============ */
.toast-container{
    position:fixed;top:80px;right:24px;z-index:9999;
    display:flex;flex-direction:column;gap:10px;
    max-width:400px;pointer-events:none;
}
.toast{
    background:#fff;border-radius:12px;
    padding:14px 18px;
    box-shadow:0 12px 40px rgba(15,23,42,.18),0 2px 6px rgba(15,23,42,.08);
    border-left:4px solid var(--primary);
    display:flex;align-items:flex-start;gap:12px;
    pointer-events:auto;
    animation:toastIn .35s cubic-bezier(.21,1.02,.73,1) both;
    min-width:280px;max-width:400px;
    font-size:.92rem;color:var(--text);
}
.toast.closing{animation:toastOut .3s ease both}
.toast-icon{
    font-size:1.25rem;line-height:1;
    flex-shrink:0;margin-top:1px;
}
.toast-body{flex:1;min-width:0}
.toast-title{font-weight:600;margin-bottom:2px}
.toast-msg{color:var(--muted);font-size:.88rem;word-break:break-word;line-height:1.4}
.toast-close{
    background:none;border:none;color:var(--muted);cursor:pointer;
    font-size:1.1rem;padding:0;line-height:1;opacity:.6;transition:opacity .15s;
    flex-shrink:0;
}
.toast-close:hover{opacity:1}
.toast.success{border-left-color:var(--success)}
.toast.success .toast-icon{color:var(--success)}
.toast.error{border-left-color:var(--danger)}
.toast.error .toast-icon{color:var(--danger)}
.toast.warning{border-left-color:#f59e0b}
.toast.warning .toast-icon{color:#f59e0b}
.toast.info{border-left-color:var(--primary)}
.toast.info .toast-icon{color:var(--primary)}

@keyframes toastIn{
    from{opacity:0;transform:translateX(20px) scale(.96)}
    to{opacity:1;transform:translateX(0) scale(1)}
}
@keyframes toastOut{
    from{opacity:1;transform:translateX(0) scale(1);max-height:200px}
    to{opacity:0;transform:translateX(20px) scale(.96);max-height:0;padding-top:0;padding-bottom:0;margin:0}
}
@media(max-width:520px){
    .toast-container{left:12px;right:12px;max-width:none;top:72px}
    .toast{min-width:0}
}

/* ============ CONFIRM / PROMPT МОДАЛКИ ============ */
.confirm-modal{
    background:#fff;border-radius:16px;padding:26px;
    width:100%;max-width:440px;
    box-shadow:0 24px 60px rgba(0,0,0,.3);
    animation:confirmIn .25s cubic-bezier(.21,1.02,.73,1) both;
    text-align:center;
}
.confirm-modal.narrow{max-width:380px}
@keyframes confirmIn{
    from{opacity:0;transform:scale(.9) translateY(-10px)}
    to{opacity:1;transform:scale(1) translateY(0)}
}
.confirm-icon{
    width:64px;height:64px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    font-size:2rem;margin:0 auto 16px;
    background:#eef2ff;color:var(--primary);
}
.confirm-icon.danger{background:#fef2f2;color:var(--danger)}
.confirm-icon.warning{background:#fef3c7;color:#d97706}
.confirm-icon.success{background:#ecfdf5;color:var(--success)}
.confirm-title{
    font-size:1.15rem;font-weight:700;color:var(--text);
    margin-bottom:8px;
}
.confirm-message{
    color:var(--muted);font-size:.94rem;line-height:1.5;
    margin-bottom:20px;word-break:break-word;
}
.confirm-input{
    width:100%;padding:12px 14px;margin-bottom:18px;
    border:1px solid var(--border);border-radius:10px;
    font-size:.95rem;font-family:inherit;
    transition:border-color .15s,box-shadow .15s;
    text-align:left;
}
.confirm-input:focus{
    outline:none;border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(79,70,229,.13);
}
.confirm-actions{
    display:flex;gap:10px;justify-content:center;flex-wrap:wrap;
}
.confirm-actions .btn{min-width:110px;justify-content:center}

/* Анимация затухания backdrop */
.modal-backdrop.closing{animation:bdOut .2s ease both}
@keyframes bdOut{
    from{opacity:1;backdrop-filter:blur(2px)}
    to{opacity:0;backdrop-filter:blur(0)}
}

/* ============ FILTER BAR ============ */
.filter-bar{
    display:flex;gap:10px;flex-wrap:wrap;align-items:center;
    padding:14px 16px;
    background:#f8fafc;
    border:1px solid var(--border);
    border-radius:12px;
    margin-bottom:16px;
}
.filter-bar .filter-label{
    font-size:.78rem;color:var(--muted);font-weight:600;
    text-transform:uppercase;letter-spacing:.4px;
    margin-right:4px;
}
.filter-bar input[type=text],
.filter-bar input[type=search],
.filter-bar select{
    padding:8px 12px;
    border:1px solid var(--border);
    border-radius:8px;
    font-size:.9rem;
    font-family:inherit;
    background:#fff;
    color:var(--text);
    min-width:150px;
    transition:border-color .15s, box-shadow .15s;
}
.filter-bar input:focus,
.filter-bar select:focus{
    outline:none;
    border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(79,70,229,.1);
}
.filter-bar .filter-info{
    margin-left:auto;
    font-size:.85rem;
    color:var(--muted);
}
.filter-bar .filter-info strong{color:var(--primary)}
.filter-bar .filter-actions{
    display:flex;
    gap:6px;
    align-items:center;
}
.filter-bar .btn{
    padding:8px 14px;
    font-size:.88rem;
}
.filter-bar .btn-clear{
    background:none;
    border:none;
    color:var(--muted);
    font-size:.85rem;
    padding:6px 10px;
    border-radius:6px;
    cursor:pointer;
    text-decoration:none;
    transition:background .15s, color .15s;
}
.filter-bar .btn-clear:hover{
    background:#eef2ff;
    color:var(--primary);
    text-decoration:none;
}

/* Ограничение высоты контейнера тостов + прокрутка */
.toast-container{
    max-height:calc(100vh - 100px);
    overflow-y:auto;
    overflow-x:hidden;
    pointer-events:none;
    padding-right:4px;
}
.toast-container::-webkit-scrollbar{width:6px}
.toast-container::-webkit-scrollbar-thumb{
    background:rgba(100,116,139,.35);border-radius:3px;
}
.toast-container::-webkit-scrollbar-thumb:hover{
    background:rgba(100,116,139,.6);
}
.toast{pointer-events:auto}