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@media(max-width:1050px){.stats-grid{grid-template-columns:repeat(2,1fr)}.content-grid,.student-layout{grid-template-columns:1fr}.recent-grades{display:none}}
@media(max-width:780px){.app-shell{display:block}.sidebar{position:fixed;left:-280px;transition:left .22s ease;width:258px;box-shadow:14px 0 38px rgba(24,36,50,.16)}.sidebar.open{left:0}.mobile-only{display:inline-grid;place-items:center}.topbar{height:74px;padding:0 16px;gap:9px}.topbar-title{margin-right:auto}.topbar-title p{display:none}.topbar-title h1{font-size:18px}.teacher-only{display:none}.view{padding:18px 14px 32px}.hero-card{padding:24px;display:block}.hero-card h2{font-size:24px}.hero-action{margin-top:20px}.stats-grid{grid-template-columns:1fr 1fr;gap:10px}.stat-card{padding:15px}.stat-card strong{font-size:24px}.content-grid{margin-top:10px}.task-row{grid-template-columns:auto minmax(0,1fr) auto}.task-progress{display:none}.status{font-size:10px}.class-grid{grid-template-columns:1fr 1fr}.section-toolbar{align-items:flex-start;flex-direction:column}.filters{display:grid;grid-template-columns:1fr 1fr}.filters .search{grid-column:1/-1;min-width:0}.large-class-grid{grid-template-columns:1fr}.student-welcome{display:block;padding:23px}.student-score{margin-top:18px}.student-task-cards{grid-template-columns:1fr}.form-row{grid-template-columns:1fr}.modal{padding:23px 18px}.top-actions .icon-btn{display:none}}
@media(max-width:430px){.stats-grid{grid-template-columns:1fr 1fr}.stat-card span{font-size:11px}.stat-card small{display:none}.hero-card{border-radius:18px}.panel{padding:16px}.class-grid{grid-template-columns:1fr 1fr}.task-row{gap:10px}.subject-icon{width:38px;height:38px}.task-main strong{font-size:13px}.student-welcome h2{font-size:25px}}
.account-role{background:#f2f6fc;color:#3567ad;border:1px solid #e1e9f5;border-radius:11px;padding:10px 12px;margin-bottom:22px;font-size:12px;font-weight:800;text-align:center}
.profile-mini .profile-copy{min-width:0;flex:1}
.profile-mini .profile-copy strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.logout-btn{margin-left:auto;width:34px;height:34px;border:1px solid #e4e9ef;background:#fff;border-radius:10px;color:#687584;cursor:pointer;font-size:17px}
.logout-btn:hover{background:#f5f7fa;color:#1d68f0}
.form-error{background:#fff0f0;border:1px solid #ffd6d6;color:#a33434;padding:11px 12px;border-radius:10px;font-size:13px;line-height:1.45}
.role-chip{display:inline-flex;padding:6px 9px;border-radius:999px;font-size:11px;font-weight:800}
.role-admin{background:#eee8ff;color:#6745b5}
.role-teacher{background:#e8f1ff;color:#1e65cc}
.role-student{background:#e7f8ee;color:#19834a}
.users-panel{margin-top:18px}
.user-stats{margin-top:0}