:root{
  --bg:#f7f8fc;
  --surface:#ffffff;
  --text:#25304a;
  --muted:#7a849b;
  --line:#e8ebf3;
  --pink:#f55a91;
  --pink-soft:#fff0f5;
  --blue:#4f7cff;
  --blue-soft:#eef3ff;
  --green:#31b978;
  --green-soft:#ebfbf3;
  --orange:#f2a23a;
  --orange-soft:#fff6e9;
  --purple:#8c63e8;
  --purple-soft:#f4efff;
  --slate:#60708a;
  --shadow:0 14px 36px rgba(47,61,100,.08);
  --radius:20px;
  --radius-sm:14px;
  --sidebar:252px;
}
*{box-sizing:border-box}
html{font-size:16px}
body{
  margin:0;
  background:linear-gradient(135deg,#f7f8fc 0%,#fbf7fb 52%,#f2f6ff 100%);
  color:var(--text);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  line-height:1.55;
}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
svg{width:1.25rem;height:1.25rem;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.svg-sprite{position:absolute;width:0;height:0;overflow:hidden}
.app-shell{min-height:100vh}
.sidebar{
  position:fixed;inset:0 auto 0 0;width:var(--sidebar);padding:24px 18px;
  background:rgba(255,255,255,.96);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:50;box-shadow:8px 0 30px rgba(43,52,86,.04)
}
.brand{display:flex;align-items:center;gap:12px;padding:0 8px 20px}
.brand-mark{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--pink),var(--purple));color:white;font-size:1.35rem;font-weight:800;
  box-shadow:0 8px 20px rgba(245,90,145,.24)
}
.brand strong{display:block;font-size:1.02rem}
.brand span{display:block;font-size:.82rem;color:var(--muted)}
.profile-card{
  position:relative;display:flex;align-items:center;gap:11px;padding:14px;
  background:linear-gradient(140deg,#fff8fb,#f7f5ff);border:1px solid #f2e9f2;border-radius:18px;margin-bottom:20px
}
.avatar,.mini-avatar,.student-avatar,.teacher-avatar{
  display:grid;place-items:center;border-radius:50%;font-weight:800
}
.avatar{width:48px;height:48px;background:linear-gradient(135deg,#ffd7e6,#e7ddff);color:#a3406c}
.profile-copy{min-width:0}
.profile-copy strong{display:block;font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.profile-copy span{display:block;font-size:.78rem;color:var(--muted)}
.online-dot{position:absolute;right:13px;top:15px;width:9px;height:9px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px white}
.nav-list{display:grid;gap:7px}
.nav-item{
  appearance:none;border:0;background:transparent;color:#647089;border-radius:14px;
  display:flex;align-items:center;gap:13px;padding:12px 14px;text-align:left;font-weight:700;font-size:.96rem;
  transition:.2s ease
}
.nav-item svg{width:1.32rem;height:1.32rem}
.nav-item:hover{transform:translateX(3px);background:#f8f9fd}
.nav-item.active{color:white;box-shadow:0 10px 22px rgba(77,91,130,.16)}
.nav-pink.active{background:linear-gradient(135deg,#fb6a9e,#f0528e)}
.nav-orange.active{background:linear-gradient(135deg,#ffb65c,#ed9730)}
.nav-blue.active{background:linear-gradient(135deg,#6b92ff,#4f72eb)}
.nav-green.active{background:linear-gradient(135deg,#55ca91,#2cad70)}
.nav-purple.active{background:linear-gradient(135deg,#a47ce9,#8059dd)}
.nav-slate.active{background:linear-gradient(135deg,#7b8ca6,#5f6f89)}
.sidebar-note{
  margin-top:auto;display:flex;align-items:center;gap:10px;padding:12px 13px;border-radius:14px;background:#f7f9fd;border:1px solid var(--line)
}
.status-dot{width:10px;height:10px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(49,185,120,.12)}
.sidebar-note strong{display:block;font-size:.82rem}
.sidebar-note span:last-child{display:block;font-size:.75rem;color:var(--muted)}
.page-area{margin-left:var(--sidebar);min-width:0}
.topbar{
  position:sticky;top:0;z-index:30;height:78px;padding:0 30px;display:flex;align-items:center;gap:20px;
  background:rgba(247,248,252,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(231,234,243,.9)
}
.topbar-title{display:flex;flex-direction:column;min-width:0}
.eyebrow{font-size:.76rem;color:var(--pink);font-weight:800;text-transform:uppercase;letter-spacing:.08em}
.topbar-title strong{font-size:1.06rem}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.role-switch{display:flex;align-items:center;gap:8px;padding:7px 10px;border:1px solid var(--line);border-radius:12px;background:white}
.role-switch span{font-size:.8rem;color:var(--muted);font-weight:700}
.role-switch select{border:0;background:transparent;color:var(--text);font-weight:800;outline:none}
.icon-button{
  width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:white;color:var(--text);
  display:grid;place-items:center;position:relative
}
.icon-button:hover{background:#f9f9fd}
.notification-dot{
  position:absolute;right:-5px;top:-6px;min-width:19px;height:19px;padding:0 4px;border-radius:10px;background:var(--pink);
  color:white;font-size:.69rem;display:grid;place-items:center;border:2px solid var(--bg);font-weight:800
}
.user-chip{border:0;background:white;border-radius:14px;padding:7px 12px 7px 7px;display:flex;align-items:center;gap:9px;color:var(--text);font-weight:800}
.mini-avatar{width:34px;height:34px;background:linear-gradient(135deg,#ffd4e4,#e9ddff);color:#9f3d6b;font-size:.78rem}
.mobile-menu{display:none}
.content{padding:28px 30px 46px;max-width:1600px;margin:0 auto}
.screen{display:none}
.screen.active{display:block;animation:fadeIn .22s ease}
@keyframes fadeIn{from{opacity:.25;transform:translateY(5px)}to{opacity:1;transform:none}}
.welcome-panel{
  border-radius:26px;padding:28px 30px;margin-bottom:22px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:
    radial-gradient(circle at 92% 20%,rgba(255,255,255,.7) 0 8%,transparent 8.5%),
    linear-gradient(120deg,#fff0f5 0%,#f5f1ff 58%,#eef5ff 100%);
  border:1px solid #f0e8f2;position:relative;overflow:hidden
}
.welcome-panel:after{content:"";position:absolute;width:210px;height:210px;border-radius:50%;right:-80px;bottom:-120px;background:rgba(245,90,145,.11)}
.welcome-panel h1,.screen-heading h1{font-size:clamp(1.7rem,2.4vw,2.35rem);line-height:1.2;margin:.35rem 0 .55rem}
.welcome-panel p,.screen-heading p{margin:0;color:#66718a;font-size:1rem;max-width:720px}
.welcome-actions{display:flex;gap:10px;position:relative;z-index:1}
.soft-label,.section-kicker{
  display:inline-block;font-size:.78rem;font-weight:800;color:var(--pink);text-transform:uppercase;letter-spacing:.08em
}
.primary-button,.secondary-button,.small-button,.ghost-button,.wide-button{
  border:0;border-radius:12px;font-weight:800;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.2s ease
}
.primary-button{padding:12px 17px;color:white;background:linear-gradient(135deg,var(--pink),#e84e8c);box-shadow:0 10px 20px rgba(245,90,145,.23)}
.primary-button:hover,.small-button:hover,.wide-button:hover{transform:translateY(-1px)}
.secondary-button{padding:12px 17px;background:white;color:var(--text);border:1px solid var(--line)}
.small-button{padding:8px 12px;background:var(--pink);color:white;font-size:.86rem}
.ghost-button{padding:8px 12px;background:white;color:var(--text);border:1px solid var(--line);font-size:.86rem}
.ghost-button:disabled{opacity:.55;cursor:not-allowed}
.wide-button{width:100%;padding:11px 14px;background:#2f3f61;color:white}
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-bottom:22px}
.metric-card{
  min-height:128px;border-radius:20px;padding:18px;display:flex;align-items:center;gap:15px;border:1px solid rgba(255,255,255,.7)
}
.metric-card span{display:block;font-size:.86rem;color:#59657e;font-weight:700}
.metric-card strong{display:block;font-size:1.7rem;line-height:1.25;margin:.18rem 0}
.metric-card small{display:block;color:#7b8498;font-size:.78rem}
.metric-icon{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:rgba(255,255,255,.76)}
.metric-icon svg{width:1.55rem;height:1.55rem}
.metric-pink{background:linear-gradient(135deg,#fff0f5,#ffe9f1);color:#d9467e}
.metric-green{background:linear-gradient(135deg,#edfbf4,#dcf8e9);color:#229a60}
.metric-orange{background:linear-gradient(135deg,#fff7ea,#ffedcf);color:#d88a22}
.metric-purple{background:linear-gradient(135deg,#f5f0ff,#ece3ff);color:#7750cf}
.metric-blue{background:linear-gradient(135deg,#eef4ff,#e0ebff);color:#4169d8}
.main-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:20px}
.main-column,.side-column{display:grid;gap:20px;align-content:start}
.panel{
  background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)
}
.compact-panel{padding:19px}
.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:17px}
.panel-heading h2{margin:.15rem 0 0;font-size:1.18rem}
.text-button{border:0;background:transparent;color:var(--pink);font-weight:800;padding:5px}
.action-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.action-card{
  min-height:148px;border:0;border-radius:18px;padding:17px;text-align:left;color:var(--text);display:flex;flex-direction:column;align-items:flex-start;
  transition:.2s ease
}
.action-card:hover{transform:translateY(-3px);box-shadow:0 12px 24px rgba(44,56,91,.09)}
.action-card strong{font-size:1rem;margin-top:auto}
.action-card small{font-size:.78rem;color:#6e7890;margin-top:4px}
.action-icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:rgba(255,255,255,.78)}
.action-blue{background:linear-gradient(145deg,#edf3ff,#dfe9ff);color:#476bd2}
.action-orange{background:linear-gradient(145deg,#fff6e9,#ffe6bd);color:#c77a1c}
.action-pink{background:linear-gradient(145deg,#fff0f5,#ffdfea);color:#d5457c}
.action-green{background:linear-gradient(145deg,#ebfaf3,#d7f5e6);color:#24965f}
.performance-chart{display:grid;grid-template-columns:45px 1fr;gap:10px;min-height:250px}
.chart-axis{display:flex;flex-direction:column;justify-content:space-between;color:#9aa2b3;font-size:.73rem;padding:5px 0 27px}
.chart-bars{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;border-left:1px solid var(--line);border-bottom:1px solid var(--line);padding:8px 12px 0}
.chart-item{display:grid;grid-template-rows:1fr auto auto;gap:4px;text-align:center;min-width:0}
.bar-track{height:180px;border-radius:10px 10px 3px 3px;background:repeating-linear-gradient(to top,#f5f6fa 0 1px,transparent 1px 45px);display:flex;align-items:flex-end;justify-content:center}
.bar-track span{display:block;width:34px;border-radius:10px 10px 4px 4px;background:linear-gradient(180deg,#75a0ff,#4f72e8);box-shadow:0 8px 16px rgba(79,114,232,.15)}
.bar-track .warning-bar{background:linear-gradient(180deg,#ffbd63,#ed9730)}
.chart-item small{font-size:.75rem;color:var(--muted)}
.chart-item strong{font-size:.82rem}
.gentle-callout{margin-top:18px;border-radius:15px;background:#fff8ea;border:1px solid #f6e3bb;padding:13px 14px;display:flex;align-items:center;gap:12px}
.callout-icon{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#ffd991;color:#8f5d12;font-weight:900}
.gentle-callout strong{font-size:.9rem}
.gentle-callout p{margin:2px 0 0;font-size:.8rem;color:#7b6a50}
.gentle-callout .small-button{margin-left:auto;white-space:nowrap}
.schedule-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.schedule-card{border:1px solid var(--line);border-radius:16px;padding:15px;background:#fff}
.schedule-card strong{display:block;margin:.65rem 0 .25rem;font-size:.95rem}
.schedule-card small{display:block;color:var(--muted);font-size:.78rem;margin-bottom:.8rem}
.day-pill,.status-badge{display:inline-flex;align-items:center;border-radius:999px;font-size:.72rem;font-weight:800}
.day-pill{padding:5px 9px}
.day-pink{background:var(--pink-soft);color:#d24379}
.day-blue{background:var(--blue-soft);color:#4668d2}
.day-orange{background:var(--orange-soft);color:#be741b}
.status-badge{padding:5px 9px}
.status-live{background:#fff0f4;color:#d34478}
.status-ready{background:#e9f9f1;color:#248b59}
.status-draft{background:#f1f3f8;color:#717b91}
.status-alert{background:#fff2df;color:#be741b}
.task-list,.notice-list{display:grid;gap:8px}
.task-row{
  width:100%;border:0;background:#f9fafc;border-radius:14px;padding:11px;display:grid;grid-template-columns:38px 1fr 20px;align-items:center;gap:10px;text-align:left
}
.task-row:hover{background:#f3f5fa}
.task-check{width:36px;height:36px;border-radius:11px;display:grid;place-items:center}
.task-orange{background:var(--orange-soft);color:#ce801d}
.task-blue{background:var(--blue-soft);color:#486bd4}
.task-purple{background:var(--purple-soft);color:#7753cc}
.task-row strong,.task-row small{display:block}
.task-row strong{font-size:.86rem}
.task-row small{font-size:.74rem;color:var(--muted)}
.task-arrow{width:18px;height:18px;color:#abb2c0}
.class-hero{display:flex;gap:11px;align-items:center;padding:13px;border-radius:14px;background:linear-gradient(135deg,#fff1f6,#f1edff);margin-bottom:14px}
.class-hero>span{width:42px;height:42px;border-radius:12px;background:white;display:grid;place-items:center;color:#c14576;font-weight:900}
.class-hero strong,.class-hero small{display:block}
.class-hero small{font-size:.74rem;color:var(--muted)}
.summary-row{display:flex;justify-content:space-between;gap:12px;font-size:.82rem;margin:10px 0}
.summary-row span{color:var(--muted)}
.progress-track{height:10px;border-radius:99px;background:#edf0f5;overflow:hidden}
.progress-track span{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--pink),var(--purple))}
.class-summary .wide-button{margin-top:15px}
.notice-row{display:flex;gap:10px;padding:10px 0;border-bottom:1px solid #f0f1f5}
.notice-row:last-child{border-bottom:0}
.notice-dot{width:10px;height:10px;border-radius:50%;margin-top:6px;flex:0 0 auto}
.notice-pink{background:var(--pink)}
.notice-blue{background:var(--blue)}
.notice-green{background:var(--green)}
.notice-row strong,.notice-row small{display:block}
.notice-row strong{font-size:.84rem}
.notice-row small{font-size:.74rem;color:var(--muted)}
.screen-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}
.class-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.large-class-card,.chapter-card{border-radius:22px;padding:22px;border:1px solid rgba(255,255,255,.7);min-height:270px}
.card-pink{background:linear-gradient(145deg,#fff1f6,#ffe3ed)}
.card-blue{background:linear-gradient(145deg,#eff4ff,#dfeaff)}
.card-orange{background:linear-gradient(145deg,#fff7ea,#ffe9c8)}
.card-green{background:linear-gradient(145deg,#edfbf5,#dcf7e9)}
.class-card-top{display:flex;justify-content:space-between;align-items:center}
.class-code{width:48px;height:48px;border-radius:15px;background:white;display:grid;place-items:center;font-weight:900}
.large-class-card h2{font-size:1.16rem;margin:1.3rem 0 .45rem}
.large-class-card p{font-size:.9rem;color:#626c82;min-height:55px}
.class-meta{display:flex;flex-direction:column;gap:5px;font-size:.8rem;color:#68728a;border-top:1px solid rgba(80,88,112,.09);padding-top:12px}
.class-card-actions{display:flex;gap:8px;margin-top:15px}
.empty-guidance{margin-top:18px;background:white;border:1px dashed #d7dce8;border-radius:18px;padding:18px;display:flex;align-items:center;gap:13px}
.empty-icon{width:46px;height:46px;border-radius:14px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center}
.empty-guidance strong{display:block}
.empty-guidance p{margin:3px 0 0;color:var(--muted);font-size:.86rem}
.teaching-layout{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(340px,.8fr);gap:20px}
.chapter-list{display:grid;gap:10px}
.chapter-row{border:1px solid var(--line);background:white;border-radius:15px;padding:13px;display:grid;grid-template-columns:42px 1fr auto;align-items:center;gap:12px;text-align:left}
.chapter-row:hover,.active-chapter{background:#fafbff;border-color:#dfe4f2}
.chapter-number{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-weight:900}
.chapter-pink{background:var(--pink-soft);color:#d5447b}
.chapter-blue{background:var(--blue-soft);color:#486bd4}
.chapter-orange{background:var(--orange-soft);color:#c0781d}
.chapter-green{background:var(--green-soft);color:#248e5c}
.chapter-row strong,.chapter-row small{display:block}
.chapter-row small{font-size:.76rem;color:var(--muted)}
.chapter-progress{font-size:.82rem;font-weight:900}
.resource-list{display:grid;gap:10px}
.resource-card{display:grid;grid-template-columns:42px 1fr auto;align-items:center;gap:11px;border:1px solid var(--line);border-radius:14px;padding:12px}
.resource-icon{width:40px;height:40px;border-radius:12px;display:grid;place-items:center}
.resource-video{background:var(--pink-soft);color:var(--pink)}
.resource-doc{background:var(--blue-soft);color:var(--blue)}
.resource-card strong,.resource-card small{display:block}
.resource-card strong{font-size:.88rem}
.resource-card small{font-size:.75rem;color:var(--muted)}
.gentle-tip{margin-top:14px;padding:13px;border-radius:14px;background:#f7f9fd;border:1px solid var(--line)}
.gentle-tip strong{display:block;font-size:.86rem}
.gentle-tip p{margin:3px 0 0;font-size:.78rem;color:var(--muted)}
.filter-bar{display:grid;grid-template-columns:minmax(220px,1fr) 220px 220px;gap:12px;margin-bottom:16px}
.search-field{background:white;border:1px solid var(--line);border-radius:13px;padding:0 13px;display:flex;align-items:center;gap:8px}
.search-field svg{color:#9aa2b2}
.search-field input,.filter-bar select{width:100%;border:0;outline:none;background:white;padding:12px;border-radius:13px;color:var(--text)}
.filter-bar select{border:1px solid var(--line)}
.student-table{background:white;border:1px solid var(--line);border-radius:18px;overflow:hidden}
.student-table-head,.student-row{display:grid;grid-template-columns:1.5fr 1fr .7fr .8fr .5fr;gap:14px;align-items:center}
.student-table-head{padding:13px 18px;background:#f7f8fb;color:#7f889c;font-size:.76rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em}
.student-row{padding:15px 18px;border-top:1px solid var(--line);font-size:.86rem}
.student-person{display:flex;align-items:center;gap:10px}
.student-person strong,.student-person small,.student-row>span>strong,.student-row>span>small{display:block}
.student-person small,.student-row>span>small{font-size:.72rem;color:var(--muted)}
.student-avatar{width:38px;height:38px;font-size:.72rem}
.avatar-pink{background:var(--pink-soft);color:#d4457b}
.avatar-blue{background:var(--blue-soft);color:#476bd4}
.avatar-green{background:var(--green-soft);color:#238c59}
.transaction-list{display:grid}
.transaction-row{display:grid;grid-template-columns:44px 1fr auto;gap:12px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}
.transaction-row:last-child{border-bottom:0}
.transaction-icon{width:42px;height:42px;border-radius:13px;background:var(--purple-soft);color:var(--purple);display:grid;place-items:center}
.transaction-row strong,.transaction-row small{display:block}
.transaction-row small{font-size:.76rem;color:var(--muted)}
.green-text{color:var(--green)!important}
.settings-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.settings-card{border:1px solid var(--line);background:white;border-radius:18px;padding:17px;display:grid;grid-template-columns:46px 1fr 20px;gap:12px;align-items:center;text-align:left}
.settings-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.settings-icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center}
.settings-pink{background:var(--pink-soft);color:var(--pink)}
.settings-blue{background:var(--blue-soft);color:var(--blue)}
.settings-green{background:var(--green-soft);color:var(--green)}
.settings-card strong,.settings-card small{display:block}
.settings-card small{font-size:.76rem;color:var(--muted)}
.student-welcome{background:linear-gradient(120deg,#eef4ff,#f5efff 58%,#fff0f5)}
.learning-progress{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.learning-step{border:1px solid var(--line);border-radius:15px;padding:14px;background:#fafbfc;display:flex;gap:10px}
.learning-step>span{width:34px;height:34px;border-radius:10px;background:#edf0f5;display:grid;place-items:center;flex:0 0 auto;font-weight:900}
.learning-step.complete>span{background:var(--green-soft);color:var(--green)}
.learning-step.current{background:var(--orange-soft);border-color:#f4dfb6}
.learning-step.current>span{background:white;color:#b96f16}
.learning-step strong,.learning-step small{display:block}
.learning-step strong{font-size:.86rem}
.learning-step small{font-size:.74rem;color:var(--muted)}
.teacher-profile{text-align:center}
.teacher-avatar{width:58px;height:58px;margin:0 auto 10px;background:linear-gradient(135deg,#ffd7e6,#e6ddff);color:#a14370}
.teacher-profile strong,.teacher-profile small{display:block}
.teacher-profile small{font-size:.76rem;color:var(--muted);margin:.2rem 0 1rem}
.deadline-card{display:flex;gap:12px;align-items:center;background:var(--orange-soft);padding:13px;border-radius:14px}
.deadline-date{width:48px;height:52px;border-radius:12px;background:white;display:grid;place-items:center;line-height:1}
.deadline-date strong{font-size:1.25rem}
.deadline-date small{font-size:.72rem;color:var(--muted)}
.deadline-card>div strong,.deadline-card>div small{display:block}
.deadline-card>div small{font-size:.76rem;color:var(--muted)}
.chapter-card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.chapter-card{position:relative}
.chapter-card-number{display:block;font-size:2.1rem;font-weight:900;opacity:.32}
.chapter-card h2{font-size:1.05rem;margin:1rem 0 .45rem}
.chapter-card p{color:#626d83;font-size:.84rem;min-height:72px}
.chapter-card .status-badge{position:absolute;right:18px;top:18px}
.assignment-list{display:grid;gap:14px}
.assignment-card{background:white;border:1px solid var(--line);border-radius:20px;padding:18px;display:grid;grid-template-columns:54px 1fr auto;gap:16px;align-items:center;box-shadow:var(--shadow)}
.assignment-urgent{border-color:#f5d8aa;background:linear-gradient(135deg,#fffdfa,#fff8ed)}
.assignment-icon{width:52px;height:52px;border-radius:16px;background:var(--orange-soft);color:var(--orange);display:grid;place-items:center}
.assignment-blue{background:var(--blue-soft);color:var(--blue)}
.assignment-copy h2{font-size:1rem;margin:.55rem 0 .25rem}
.assignment-copy p{margin:0;color:#68728a;font-size:.84rem}
.assignment-meta{display:flex;gap:16px;margin-top:8px;color:#80899b;font-size:.75rem}
.progress-list{display:grid;gap:18px}
.progress-item>div:first-child{display:flex;justify-content:space-between;gap:12px;margin-bottom:8px}
.progress-item strong{font-size:.88rem}
.progress-item span{font-weight:900;font-size:.84rem}
.warning-progress span{background:linear-gradient(90deg,#f2a23a,#f7be6c)}
.student-class-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(320px,.75fr);gap:20px}
.teacher-large-profile{display:flex;gap:18px;align-items:center}
.teacher-avatar.large{width:72px;height:72px;margin:0;flex:0 0 auto;font-size:1.1rem}
.teacher-large-profile h2{margin:.2rem 0 .35rem}
.teacher-large-profile p{margin:0;color:var(--muted);font-size:.88rem}
.class-info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:22px}
.class-info-grid>div{background:#f8f9fc;border:1px solid var(--line);border-radius:14px;padding:13px}
.class-info-grid span,.class-info-grid strong{display:block}
.class-info-grid span{font-size:.75rem;color:var(--muted)}
.class-info-grid strong{font-size:.86rem;margin-top:3px}
.modal-backdrop,.sidebar-backdrop{position:fixed;inset:0;background:rgba(30,38,58,.45);opacity:0;pointer-events:none;transition:.2s ease;z-index:90}
.modal-backdrop.open,.sidebar-backdrop.open{opacity:1;pointer-events:auto}
.modal{width:min(560px,calc(100% - 28px));max-height:calc(100vh - 38px);overflow:auto;background:white;border-radius:22px;padding:22px;box-shadow:0 24px 70px rgba(28,35,55,.26);position:absolute;left:50%;top:50%;transform:translate(-50%,-48%) scale(.98);transition:.2s ease}
.modal-backdrop.open .modal{transform:translate(-50%,-50%) scale(1)}
.modal-header{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;border-bottom:1px solid var(--line);padding-bottom:15px}
.modal-header h2{margin:.15rem 0 0;font-size:1.25rem}
.modal-body{padding-top:17px}
.form-grid{display:grid;gap:14px}
.form-field{display:grid;gap:6px}
.form-field label{font-size:.83rem;font-weight:800}
.form-field input,.form-field select,.form-field textarea{
  width:100%;border:1px solid #dfe3ec;border-radius:12px;padding:11px 12px;color:var(--text);outline:none;background:white
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:#9ab0ee;box-shadow:0 0 0 4px rgba(79,124,255,.1)}
.form-help{font-size:.76rem;color:var(--muted)}
.modal-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:18px}
.inline-check{display:flex;align-items:flex-start;gap:9px;padding:11px;border-radius:12px;background:#f7f9fd}
.inline-check input{margin-top:4px}
.inline-check label{font-size:.8rem;color:#5f6980}
.warning-box{display:none;margin-top:10px;padding:11px 12px;border-radius:12px;background:#fff5e6;border:1px solid #f2d7aa;color:#8b5d18;font-size:.82rem}
.warning-box.show{display:block}
.toast{
  position:fixed;right:22px;bottom:22px;z-index:120;max-width:360px;background:#293752;color:white;border-radius:14px;padding:13px 16px;
  box-shadow:0 16px 35px rgba(27,35,54,.22);transform:translateY(20px);opacity:0;pointer-events:none;transition:.22s ease;font-weight:700;font-size:.86rem
}
.toast.show{transform:none;opacity:1}
.toast.warning{background:#8a5d1b}
.sidebar-backdrop{z-index:40}
@media (max-width:1180px){
  :root{--sidebar:222px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .action-grid{grid-template-columns:repeat(2,1fr)}
  .main-grid{grid-template-columns:1fr}
  .side-column{grid-template-columns:repeat(3,1fr)}
  .class-card-grid,.chapter-card-grid{grid-template-columns:repeat(2,1fr)}
  .teaching-layout,.student-class-grid{grid-template-columns:1fr}
}
@media (max-width:900px){
  .sidebar{transform:translateX(-102%);transition:.25s ease}
  .sidebar.open{transform:none}
  .page-area{margin-left:0}
  .mobile-menu{display:grid}
  .topbar{padding:0 18px}
  .content{padding:22px 18px 96px}
  .side-column{grid-template-columns:1fr}
  .schedule-grid,.settings-grid{grid-template-columns:1fr}
  .filter-bar{grid-template-columns:1fr}
  .student-table-head{display:none}
  .student-row{grid-template-columns:1fr 1fr;gap:10px}
  .student-row>span:last-child{grid-column:2;text-align:right}
  .student-row>span:first-child{grid-column:1/-1}
  .learning-progress{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  html{font-size:16px}
  .topbar{height:auto;min-height:72px;padding:10px 14px;flex-wrap:wrap}
  .topbar-title{flex:1}
  .topbar-title .eyebrow{display:none}
  .topbar-actions{width:100%;margin-left:0;justify-content:space-between}
  .role-switch{flex:1}
  .user-chip span:last-child{display:none}
  .content{padding:18px 13px 92px}
  .welcome-panel,.screen-heading{align-items:flex-start;flex-direction:column}
  .welcome-panel{padding:22px}
  .welcome-actions{width:100%;flex-direction:column}
  .welcome-actions button{width:100%}
  .metric-grid,.class-card-grid,.chapter-card-grid{grid-template-columns:1fr}
  .action-grid{grid-template-columns:1fr 1fr}
  .action-card{min-height:132px}
  .schedule-grid{grid-template-columns:1fr}
  .performance-chart{grid-template-columns:36px 1fr}
  .chart-bars{gap:8px;padding-inline:6px}
  .bar-track span{width:25px}
  .gentle-callout{align-items:flex-start;flex-wrap:wrap}
  .gentle-callout .small-button{margin-left:42px}
  .student-row{grid-template-columns:1fr}
  .student-row>span:last-child,.student-row>span:first-child{grid-column:auto;text-align:left}
  .learning-progress{grid-template-columns:1fr}
  .assignment-card{grid-template-columns:46px 1fr}
  .assignment-card>button{grid-column:1/-1;width:100%}
  .assignment-meta{flex-direction:column;gap:4px}
  .teacher-large-profile{align-items:flex-start}
  .class-info-grid{grid-template-columns:1fr}
}