:root{
  --bg:#f5f6f8; --surface:#ffffff; --surface-2:#f8f9fb; --text:#17202a; --muted:#6f7782;
  --line:#e5e8ec; --dark:#172c29; --accent:#e9ff6b; --accent-dark:#233c37; --danger:#d85151;
  --shadow:0 12px 34px rgba(23,32,42,.08); --radius:18px;
  --phase-retrieval:#9b7af7; --phase-input:#f0a94a; --phase-guided:#4aa3df;
  --phase-independent:#48af78; --phase-consolidation:#e66e91; --phase-check:#42b9b0;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.hidden{display:none!important}
.app-shell{min-height:100vh;display:grid;grid-template-columns:248px 1fr}
.sidebar{background:var(--dark);color:#fff;padding:22px 16px;display:flex;flex-direction:column;position:fixed;inset:0 auto 0 0;width:248px;z-index:20}
.brand,.auth-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:-.4px}
.brand{padding:0 10px 22px}
.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--accent);color:var(--dark);display:grid;place-items:center;font-weight:900}
.nav{display:flex;flex-direction:column;gap:5px}
.nav-label{font-size:10px;letter-spacing:1.5px;color:#78908b;margin:20px 12px 7px;font-weight:800}
.nav-item{border:0;background:transparent;color:#b8c6c3;border-radius:11px;padding:11px 12px;text-align:left;display:flex;gap:12px;align-items:center;font-weight:650}
.nav-item:hover{background:rgba(255,255,255,.07);color:#fff}
.nav-item.active{background:#29433e;color:#fff}
.nav-item.active span{color:var(--accent)}
.sidebar-footer{margin-top:auto}
.profile-mini{border:0;background:#203833;color:#fff;width:100%;border-radius:14px;padding:10px;display:flex;align-items:center;gap:10px;text-align:left}
.profile-mini strong,.profile-mini span{display:block}
.profile-mini strong{font-size:13px}
.profile-mini span{font-size:10px;color:#9eb0ad;margin-top:2px;max-width:150px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.avatar{width:36px;height:36px;border-radius:50%;background:#d2e6df;color:#24423c;display:grid;place-items:center;font-weight:800}
.main{grid-column:2}
.topbar{height:70px;padding:0 34px;border-bottom:1px solid var(--line);background:rgba(245,246,248,.92);backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10}
.breadcrumb{font-weight:760}
.top-actions{display:flex;gap:10px}
.content{padding:28px 34px 60px;max-width:1500px;margin:auto}
.mobile-menu{display:none;border:0;background:transparent;font-size:23px;margin-right:10px}
.eyebrow{font-size:11px;letter-spacing:1.8px;font-weight:850;color:#7b858e}
.page-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:24px}
.page-head h1{font-size:31px;letter-spacing:-1.2px;margin:4px 0}
.page-head p{margin:0;color:var(--muted);max-width:680px}
.btn{border:1px solid var(--line);background:#fff;color:var(--text);padding:10px 15px;border-radius:10px;font-weight:750}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff}
.btn.accent{background:var(--accent);border-color:var(--accent);color:var(--dark)}
.btn.ghost{background:#fff}
.btn.danger{color:#a72e2e;border-color:#f1c8c8;background:#fff7f7}
.btn.compact{padding:8px 12px;font-size:13px}
.btn.wide{width:100%;margin-top:10px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 1px 2px rgba(23,32,42,.02)}
.card-pad{padding:20px}
.grid{display:grid;gap:16px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.stat{padding:18px 20px}
.stat-top{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px;font-weight:750}
.stat-value{font-size:31px;font-weight:850;margin-top:13px;letter-spacing:-1px}
.stat-foot{font-size:12px;color:var(--muted);margin-top:5px}
.stat-icon{width:34px;height:34px;border-radius:10px;background:#f0f2f4;display:grid;place-items:center}
.dashboard-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:16px;margin-top:16px}
.section-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.section-title h2{font-size:17px;margin:0}
.muted{color:var(--muted)}
.small{font-size:12px}
.lesson-list{display:flex;flex-direction:column}
.lesson-row{display:grid;grid-template-columns:58px 1fr auto;align-items:center;gap:14px;padding:14px 0;border-top:1px solid var(--line)}
.lesson-row:first-child{border-top:0}
.date-tile{background:#f2f4f5;border-radius:12px;text-align:center;padding:7px 5px}
.date-tile strong{display:block;font-size:17px}
.date-tile span{font-size:10px;color:var(--muted);text-transform:uppercase}
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:5px 9px;background:#f0f2f4;font-size:11px;font-weight:780}
.badge.green{background:#e4f7eb;color:#237047}.badge.yellow{background:#fff2cf;color:#8a6612}.badge.red{background:#ffe4e4;color:#a43939}.badge.dark{background:#e4ecea;color:#24413c}
.progress{height:7px;background:#eef0f2;border-radius:99px;overflow:hidden}
.progress>i{display:block;height:100%;background:#3b6b63;border-radius:99px}
.class-card{padding:18px;position:relative;overflow:hidden}
.class-color{position:absolute;inset:0 auto 0 0;width:5px}
.class-card h3{margin:2px 0 6px}
.class-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px;background:#fff}
table{border-collapse:collapse;width:100%;min-width:740px}
th,td{padding:12px 13px;text-align:left;border-bottom:1px solid var(--line);font-size:13px}
th{background:#fafbfc;color:#68727d;font-size:11px;text-transform:uppercase;letter-spacing:.5px}
tr:last-child td{border-bottom:0}
td.grade-cell{cursor:pointer;text-align:center}
td.grade-cell:hover{background:#f6f8f8}
.grade-pill{min-width:34px;display:inline-block;border-radius:8px;padding:5px 7px;font-weight:800}
.grade-1{background:#dff4e7;color:#1c6e40}.grade-2{background:#e8f4df;color:#4d6c24}.grade-3{background:#fff1ca;color:#7b6012}
.grade-4{background:#ffe5bf;color:#8e5313}.grade-5{background:#ffd9d9;color:#9d3838}.grade-6{background:#f8c9c9;color:#7e2424}
.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:20px}
.tab{border:0;background:transparent;padding:10px 13px;color:var(--muted);font-weight:720;border-bottom:2px solid transparent}
.tab.active{color:var(--text);border-color:var(--text)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label{display:flex;flex-direction:column;gap:7px;font-size:12px;font-weight:750;color:#49525c}
input,select,textarea{border:1px solid #dce1e5;border-radius:9px;padding:10px 11px;background:#fff;color:var(--text);outline:none}
input:focus,select:focus,textarea:focus{border-color:#64867f;box-shadow:0 0 0 3px rgba(100,134,127,.12)}
textarea{resize:vertical}
.subject-picker{display:flex;flex-wrap:wrap;gap:8px;margin:4px 0 12px}
.subject-option input{display:none}
.subject-option span{display:block;padding:8px 11px;border:1px solid var(--line);border-radius:999px;font-size:12px;cursor:pointer}
.subject-option input:checked+span{background:#263f3a;color:#fff;border-color:#263f3a}
.modal{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:20px}
.modal-backdrop{position:absolute;inset:0;background:rgba(16,25,25,.45);backdrop-filter:blur(3px)}
.modal-card{position:relative;background:#fff;border-radius:20px;box-shadow:var(--shadow);width:min(740px,100%);max-height:90vh;overflow:auto;padding:24px}
.modal-close{position:absolute;right:15px;top:12px;border:0;background:transparent;font-size:27px;color:#707881}
.modal h2{margin-top:0}
.auth-screen{min-height:100vh;display:grid;grid-template-columns:1.1fr .9fr;background:#f7f8f6}
.auth-visual{background:#18312d;color:#fff;padding:36px 48px;display:flex;flex-direction:column;justify-content:space-between;min-height:100vh}
.auth-copy{max-width:650px}.auth-copy .eyebrow{color:#a3b5b1}.auth-copy h1{font-size:52px;line-height:1.03;letter-spacing:-2.2px;margin:14px 0 18px}.auth-copy p{font-size:17px;line-height:1.7;color:#b8c7c4}
.auth-quote{border-top:1px solid #36514c;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#9fb3af;font-size:12px}.auth-quote strong{color:var(--accent)}
.auth-panel{display:grid;place-items:center;padding:38px}.register-card{width:min(500px,100%);background:#fff;border:1px solid var(--line);border-radius:24px;padding:30px;box-shadow:var(--shadow)}.register-card h2{font-size:28px;margin:7px 0}.register-card>label{margin-top:15px}
.lesson-editor-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:18px;align-items:start}
.lesson-meta{padding:20px;margin-bottom:16px}
.phase-list{display:flex;flex-direction:column;gap:12px}
.phase-card{display:grid;grid-template-columns:6px 1fr;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}
.phase-color{background:var(--phase-input)}
.phase-main{padding:16px}
.phase-heading{display:flex;justify-content:space-between;gap:20px;margin-bottom:13px}
.phase-heading>div:first-child{display:flex;align-items:center;gap:10px}
.phase-index{font-size:11px;font-weight:800;color:var(--muted)}
.phase-type{font-weight:800;padding:7px 9px}
.phase-actions{display:flex;gap:5px}
.icon-btn{width:30px;height:30px;border:1px solid var(--line);background:#fff;border-radius:8px}
.danger-text{color:#b54c4c}
.phase-grid{display:grid;grid-template-columns:1fr 1fr;gap:11px}
.span-2{grid-column:1/-1}
.material-row{display:flex;gap:8px}.material-row>input{flex:1}
.file-btn{border:1px dashed #bfc8ce;border-radius:9px;padding:9px 11px;white-space:nowrap;cursor:pointer}.file-btn input{display:none}
.file-list{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}.file-chip{font-size:10px;background:#f0f2f4;padding:5px 8px;border-radius:999px}
.input-suffix{display:flex}.input-suffix input{border-radius:9px 0 0 9px;width:100%}.input-suffix span{display:grid;place-items:center;border:1px solid #dce1e5;border-left:0;border-radius:0 9px 9px 0;padding:0 9px;background:#f6f7f8;color:var(--muted)}
.editor-side{position:sticky;top:88px;display:flex;flex-direction:column;gap:14px}.editor-side .card{padding:18px}
.metric{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-top:1px solid var(--line)}.metric:first-of-type{border-top:0}
.metric strong{font-size:14px}.metric span{color:var(--muted);font-size:12px}
.score-ring{width:92px;height:92px;border-radius:50%;display:grid;place-items:center;margin:10px auto 16px;background:conic-gradient(#365f57 var(--score,75%),#edf0ef 0)}.score-ring:after{content:attr(data-score);width:72px;height:72px;border-radius:50%;background:#fff;display:grid;place-items:center;font-size:20px;font-weight:850}
.insight{padding:10px 11px;border-radius:10px;background:#f7f8f8;margin-top:8px;font-size:11px;line-height:1.45}.insight.warn{background:#fff7e3}.insight.good{background:#eaf7ef}
.phase-legend{display:flex;flex-wrap:wrap;gap:8px}.legend-item{display:flex;align-items:center;gap:6px;font-size:10px}.legend-dot{width:8px;height:8px;border-radius:50%}
.sequence-card{padding:19px}.sequence-lessons{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.sequence-step{border:1px solid var(--line);border-radius:10px;padding:8px 10px;font-size:11px;background:#fafbfb}.sequence-step.done{background:#edf6f2}
.rating-buttons{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.rating-btn{padding:13px;border:1px solid var(--line);border-radius:10px;background:#fff;font-weight:750}.rating-btn.green.active{background:#e3f7ea;border-color:#81c89c}.rating-btn.yellow.active{background:#fff3cf;border-color:#e5c45f}.rating-btn.red.active{background:#ffe4e4;border-color:#e79d9d}
.research-card{padding:20px}.research-card h3{margin:0 0 7px}.research-card p{color:var(--muted);line-height:1.6;font-size:13px}
.toast{position:fixed;right:24px;bottom:24px;background:#1c302d;color:#fff;padding:11px 15px;border-radius:10px;font-size:12px;font-weight:700;z-index:200;opacity:0;transform:translateY(10px);pointer-events:none;transition:.2s}.toast.show{opacity:1;transform:translateY(0)}
.empty{text-align:center;padding:40px 20px;color:var(--muted)}.empty strong{display:block;color:var(--text);font-size:16px;margin-bottom:5px}
.kpi-bar{display:flex;gap:7px;align-items:center}.kpi-bar .progress{flex:1}
.teacher-share{font-size:28px;font-weight:850}
.print-only{display:none}
@media(max-width:1100px){.grid-4{grid-template-columns:repeat(2,1fr)}.dashboard-grid,.lesson-editor-layout{grid-template-columns:1fr}.editor-side{position:static}.grid-3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.app-shell{display:block}.sidebar{transform:translateX(-100%);transition:.2s}.sidebar.open{transform:translateX(0)}.main{grid-column:auto}.mobile-menu{display:inline-block}.topbar{padding:0 16px}.top-actions .ghost{display:none}.content{padding:22px 16px}.grid-4,.grid-3,.grid-2,.form-grid,.phase-grid{grid-template-columns:1fr}.span-2{grid-column:auto}.page-head{align-items:flex-start;flex-direction:column}.auth-screen{grid-template-columns:1fr}.auth-visual{min-height:auto;padding:28px}.auth-copy h1{font-size:38px}.auth-panel{padding:20px}.auth-quote{display:none}.material-row{flex-direction:column}}
@media print{
  @page{size:A4 landscape;margin:8mm}
  html,body{background:#fff!important;color:#111!important;width:auto!important;min-width:0!important}
  body{font-family:Arial,Helvetica,sans-serif!important;font-size:8.5pt!important}
  .sidebar,.topbar,.sidebar-backdrop,.modal,.toast,.page-head,.lesson-editor-layout,.print-only,.no-print{display:none!important}
  .app-shell,.main{display:block!important;min-height:0!important;margin:0!important;padding:0!important}
  .main{grid-column:auto!important}
  .content{display:block!important;padding:0!important;margin:0!important;max-width:none!important;width:100%!important}
  .content>*:not(.lesson-print-sheet){display:none!important}
  .lesson-print-sheet{display:block!important;width:100%!important;margin:0!important;padding:0!important}
  .print-document-head{display:flex!important;justify-content:space-between;align-items:flex-start;gap:12mm;border-bottom:1.5px solid #1c302d;padding-bottom:4mm;margin-bottom:3mm}
  .print-brand{font-size:7.5pt;font-weight:700;letter-spacing:.6px;text-transform:uppercase;color:#52625f;margin-bottom:1.5mm}
  .print-document-head h1{font-size:15pt!important;line-height:1.15!important;margin:0 0 1.5mm!important}
  .print-meta{font-size:8pt;color:#45514f}
  .print-duration{min-width:18mm;text-align:center;border:1px solid #aeb9b6;border-radius:2mm;padding:2mm 3mm}
  .print-duration strong{display:block;font-size:13pt;line-height:1}
  .print-duration span{display:block;font-size:6.5pt;color:#596562;margin-top:1mm;text-transform:uppercase;letter-spacing:.4px}
  .print-objectives{border:1px solid #c8cfcd;background:#f7f9f8;padding:2.5mm 3mm;margin-bottom:3mm;display:grid!important;grid-template-columns:22mm 1fr;gap:3mm}
  .print-objectives>strong{font-size:8pt}
  .print-objectives>div{display:flex!important;flex-wrap:wrap;gap:1.2mm 4mm}
  .print-objective{font-size:7.5pt}
  .print-objective.done{font-weight:700}
  .lesson-print-table{width:100%!important;border-collapse:collapse!important;border-spacing:0!important;table-layout:fixed!important;min-width:0!important}
  .lesson-print-table thead{display:table-header-group}
  .lesson-print-table tr{break-inside:avoid;page-break-inside:avoid}
  .lesson-print-table th{background:#e8eeec!important;-webkit-print-color-adjust:exact;print-color-adjust:exact;color:#182724!important;font-size:7pt!important;line-height:1.15!important;padding:1.8mm 1.4mm!important;border:1px solid #86928f!important;text-align:left!important;text-transform:none!important;letter-spacing:0!important}
  .lesson-print-table td{font-size:7.2pt!important;line-height:1.25!important;vertical-align:top!important;padding:1.7mm 1.4mm!important;border:1px solid #aeb8b5!important;white-space:normal!important;overflow-wrap:anywhere!important}
  .lesson-print-table .col-number{width:4%}
  .lesson-print-table .col-time{width:7%}
  .lesson-print-table .col-phase{width:14%}
  .lesson-print-table .col-goal{width:28%}
  .lesson-print-table .col-method{width:16%}
  .lesson-print-table .col-check{width:14%}
  .lesson-print-table .col-material{width:17%}
  .print-phase-number,.print-time{text-align:center!important;white-space:nowrap!important}
  .print-phase-name{font-weight:700}
  .print-phase-dot{display:inline-block!important;width:2.2mm;height:2.2mm;border-radius:50%;margin-right:1.3mm;vertical-align:-.2mm;-webkit-print-color-adjust:exact;print-color-adjust:exact}
}

/* v2 additions */
.student-actions{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}
.grade-source{font-weight:760}.grade-meta{font-size:11px;color:var(--muted);margin-top:2px}
.student-summary{display:grid;grid-template-columns:1.1fr 2fr;gap:16px;margin-bottom:16px}
.grade-category-summary{padding:14px;border:1px solid var(--line);border-radius:12px;background:#fafbfb}
.sequence-plan-list{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.sequence-plan-item{display:grid;grid-template-columns:46px minmax(0,1fr) 220px auto;gap:12px;align-items:center;border:1px solid var(--line);border-radius:14px;padding:12px;background:#fff}
.sequence-order{width:36px;height:36px;border-radius:10px;background:#eef2f1;color:#315049;display:grid;place-items:center;font-weight:850}
.sequence-plan-item input,.sequence-plan-item textarea,.sequence-plan-item select{width:100%}
.sequence-focus{margin-top:7px}
.sequence-toolbar{display:flex;gap:8px;flex-wrap:wrap}
.phase-type-wrap{display:flex;gap:8px;align-items:center}
.lesson-identity{display:grid;grid-template-columns:2fr 1fr;gap:12px;margin-bottom:13px}
.inline-note-button{white-space:nowrap}
@media(max-width:900px){.student-summary{grid-template-columns:1fr}.sequence-plan-item{grid-template-columns:40px 1fr}.sequence-link,.sequence-plan-actions{grid-column:2}.lesson-identity{grid-template-columns:1fr}}

/* DeinLehrbuch v3 */
.grade-toolbar{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin-bottom:16px}
.gradebook-table-wrap{max-width:100%;overflow:auto}
.gradebook-matrix{min-width:max-content}
.gradebook-matrix th,.gradebook-matrix td{text-align:center}
.gradebook-matrix .sticky-name{position:sticky;left:0;z-index:4;background:#fff;text-align:left;min-width:180px}
.gradebook-matrix thead .sticky-name{z-index:7;background:#f6f8f8}
.category-header-row th{border-bottom:1px solid #d9dfe2}
.category-group{background:#edf2f0!important;padding:8px 10px!important;min-width:120px}
.category-head{display:flex;align-items:center;justify-content:center;gap:7px}
.category-title-button{border:0;background:transparent;font-size:11px;font-weight:850;color:#2c4641;text-transform:none;letter-spacing:0;padding:3px;white-space:nowrap}
.category-title-button span,.category-group>span{font-weight:700;color:#72817e;margin-left:3px}
.tiny-plus{width:23px;height:23px;border-radius:7px;border:1px solid #cbd6d2;background:#fff;color:#2a4b44;font-size:17px;line-height:18px}
.assessment-header-row th{background:#fafbfb!important;text-transform:none;letter-spacing:0;min-width:92px;max-width:135px}
.assessment-head button{border:0;background:transparent;padding:0;width:100%;display:flex;flex-direction:column;align-items:center;gap:3px;color:var(--text)}
.assessment-head strong{font-size:11px;max-width:120px;white-space:normal}
.assessment-head span{font-size:9px;color:var(--muted);font-weight:500}
.empty-assessment button{color:#53716b;font-weight:800}
.matrix-cell{min-width:92px;height:54px}
.matrix-empty{color:#b3b9be}
.semester-head,.semester-cell{background:#f3f6f4!important;min-width:90px;font-weight:850}
.student-name-button{border:0;background:transparent;padding:0;text-align:left;color:var(--text)}
.category-settings-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.category-setting-card{border:1px solid var(--line);border-radius:12px;padding:12px;display:flex;justify-content:space-between;gap:12px;align-items:center}
.category-setting-actions{display:flex;gap:6px;align-items:center}

.lesson-objectives-field{display:flex;flex-direction:column;gap:9px}
.form-label{display:block;font-size:12px;font-weight:750;color:#49525c;margin-bottom:3px}
.objective-field-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.objective-list{display:flex;flex-direction:column;gap:7px}
.objective-item{display:grid;grid-template-columns:34px minmax(0,1fr) 32px;gap:7px;align-items:center;border:1px solid var(--line);border-radius:10px;padding:6px;background:#fff}
.objective-item.achieved{background:#eef8f1;border-color:#b9dcc6}
.objective-item.achieved .objective-text{text-decoration:line-through;color:#668071}
.objective-text{border:0;box-shadow:none!important;padding:6px 4px;background:transparent}
.objective-check{display:block}
.objective-check input{display:none}
.objective-check span{width:28px;height:28px;border:1px solid #cdd5d8;border-radius:8px;display:grid;place-items:center;color:transparent;background:#fff;font-weight:900}
.objective-check input:checked+span{background:#2e6853;border-color:#2e6853;color:#fff}
.add-objective-button{border:1px dashed #bfcac6;background:#f9fbfa;color:#35574f;border-radius:10px;padding:9px 11px;display:flex;align-items:center;justify-content:center;gap:7px;font-weight:780}
.add-objective-button span{font-size:18px}
.objective-empty{font-size:11px;color:var(--muted);padding:9px 0}

.sequence-editor{display:flex;flex-direction:column;gap:16px}
.sequence-meta-card{box-shadow:none}
.sequence-timeline-card{padding:0;overflow:hidden}
.sequence-timeline-head{padding:20px 22px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:flex-start;gap:20px;background:#fbfcfc}
.sequence-timeline-head h2{margin:4px 0 4px;font-size:20px}
.sequence-timeline-head p{margin:0;color:var(--muted);font-size:12px}
.sequence-units{padding:10px 22px 0}
.sequence-unit{display:grid;grid-template-columns:42px minmax(0,1fr) 36px;gap:12px;position:relative;padding:14px 0;border-bottom:1px solid var(--line)}
.sequence-unit:before{content:"";position:absolute;left:20px;top:50px;bottom:-14px;width:1px;background:#dbe2df}
.sequence-unit:last-child:before{display:none}
.sequence-unit-index{width:42px;height:42px;border-radius:50%;background:#ecf1ef;color:#33524b;display:grid;place-items:center;font-weight:900;z-index:1;border:4px solid #fff}
.sequence-unit.is-linked .sequence-unit-index{background:#dff3e6;color:#266b43}
.sequence-unit-main{min-width:0}
.sequence-unit-title-row{display:flex;align-items:center;gap:10px;margin-bottom:7px}
.seq-unit-title{font-size:15px;font-weight:820;border:0;border-bottom:1px solid transparent;border-radius:0;padding:5px 2px;flex:1}
.seq-unit-title:focus{border-bottom-color:#64867f;box-shadow:none}
.seq-unit-focus{width:100%;background:#fafbfb}
.sequence-unit-link-row{display:flex;gap:10px;align-items:end;margin-top:9px}
.sequence-unit-link-row label{flex:1}
.sequence-unit-actions{display:flex;flex-direction:column;gap:5px}
.sequence-add-button{width:calc(100% - 44px);margin:12px 22px 22px;border:1px dashed #aebfba;border-radius:14px;background:#f8fbfa;padding:14px;display:grid;grid-template-columns:36px 1fr;grid-template-rows:auto auto;text-align:left;column-gap:10px;color:#31544b}
.sequence-add-button>span{grid-row:1/3;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:#e6efec;font-size:24px}
.sequence-add-button strong{font-size:13px}
.sequence-add-button small{color:var(--muted)}
.sequence-empty{display:flex;gap:14px;align-items:center;padding:24px 0;color:var(--muted)}
.sequence-empty-number{width:42px;height:42px;border-radius:50%;background:#f0f3f2;display:grid;place-items:center;font-weight:900;color:#61716d}
.sequence-empty p{margin:3px 0;font-size:12px}
.sequence-preview{margin-top:14px;display:flex;flex-direction:column;gap:6px}
.sequence-preview-item{display:flex;gap:8px;align-items:center;background:#f8f9f9;padding:7px 8px;border-radius:9px}
.sequence-preview-item>span{width:23px;height:23px;border-radius:50%;background:#e8eceb;display:grid;place-items:center;font-size:10px;font-weight:900}
.sequence-preview-item.linked>span{background:#dff3e6;color:#276642}
.sequence-preview-item strong,.sequence-preview-item small{display:block}
.sequence-preview-item strong{font-size:11px}
.sequence-preview-item small{font-size:9px;color:var(--muted);margin-top:1px}

@media(max-width:760px){
  .category-settings-grid{grid-template-columns:1fr}
  .sequence-unit{grid-template-columns:36px minmax(0,1fr)}
  .sequence-unit-actions{grid-column:2;flex-direction:row}
  .sequence-unit-link-row{align-items:stretch;flex-direction:column}
  .sequence-unit-index{width:36px;height:36px}
  .sequence-unit:before{left:17px;top:44px}
}


/* Online/Auth */
.auth-card-online>form>label{margin-top:10px}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:6px;background:#f0f2f3;padding:4px;border-radius:11px;margin:18px 0}.auth-tab{border:0;background:transparent;border-radius:8px;padding:9px;font-weight:800;color:#6d777d}.auth-tab.active{background:#fff;color:#203833;box-shadow:0 1px 4px rgba(0,0,0,.08)}
.auth-message{margin:13px 0 3px;border-radius:10px;padding:10px 12px;font-size:12px;line-height:1.5;background:#edf3f1;color:#315149}.auth-message.error{background:#ffe8e8;color:#943838}.auth-message.warning{background:#fff4d8;color:#765811}.auth-message.success{background:#e5f6eb;color:#25653d}
.sync-status{font-size:10px;font-weight:800;color:#6f7b78;background:#edf0ef;border-radius:999px;padding:5px 8px;align-self:center}.sync-status.saved{color:#25633e;background:#e5f5ea}.sync-status.saving{color:#80611b;background:#fff4d9}.sync-status.error{color:#943838;background:#ffe7e7}.sync-status.demo{color:#5d4d91;background:#eee9ff}
.sync-profile-box{display:flex;justify-content:space-between;gap:14px;border:1px solid var(--line);border-radius:10px;padding:10px 11px;font-size:12px}.sync-profile-box span{color:var(--muted)}
.file-chip-online{display:inline-flex;align-items:center;gap:5px}.file-chip-online button{border:0;background:transparent;padding:0 2px;color:#53635f;font-weight:900}.file-chip-online .file-remove{color:#a14d4d}


/* DeinLehrbuch v4: Klassenbasierte Unterrichts- und Sequenznavigation */
.collection-class-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.collection-class-card{position:relative;overflow:hidden;min-height:154px;padding:20px 50px 20px 22px;text-align:left;border:1px solid var(--line);transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;color:var(--text)}
.collection-class-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#d3dad7}
.collection-class-color{position:absolute;left:0;top:0;bottom:0;width:6px}
.collection-class-main h3{font-size:23px;margin:5px 0 3px;letter-spacing:-.5px}
.collection-class-main .class-meta{margin-top:17px}
.collection-arrow{position:absolute;right:20px;top:50%;transform:translateY(-50%);width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:#f0f4f2;color:#35584f;font-size:18px;font-weight:800}
.plan-card{display:flex;flex-direction:column;min-height:230px}
.plan-card .sequence-preview{flex:1}
.plan-card-actions{display:flex;gap:8px;align-items:center;justify-content:space-between;margin-top:auto;padding-top:18px}
.plan-card-actions .danger-text{margin-left:auto}
@media(max-width:1100px){.collection-class-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.collection-class-grid{grid-template-columns:1fr}.collection-class-card{min-height:135px}.plan-card-actions{align-items:stretch;flex-direction:column}.plan-card-actions .danger-text{margin-left:0}}

/* v6 mobile navigation */
.sidebar-mobile-close,.sidebar-backdrop{display:none}
@media(max-width:760px){
  body.mobile-nav-open{overflow:hidden}
  .app-shell{display:block}
  .sidebar{
    display:flex;
    width:min(86vw,320px);
    max-width:320px;
    padding:18px 14px max(18px,env(safe-area-inset-bottom));
    transform:translateX(-105%);
    transition:transform .22s ease;
    z-index:70;
    box-shadow:18px 0 50px rgba(12,24,22,.28);
    overflow-y:auto;
    overscroll-behavior:contain;
  }
  .sidebar.open{transform:translateX(0)}
  .sidebar .brand{padding:0 7px 16px;position:relative}
  .sidebar-mobile-close{
    display:grid;
    place-items:center;
    margin-left:auto;
    width:36px;height:36px;
    border:0;border-radius:10px;
    background:rgba(255,255,255,.08);
    color:#fff;font-size:26px;line-height:1;
  }
  .sidebar-backdrop{
    display:block;
    position:fixed;
    inset:0;
    z-index:65;
    border:0;
    padding:0;
    background:rgba(13,24,22,.42);
    backdrop-filter:blur(2px);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:opacity .2s ease,visibility .2s ease;
  }
  .sidebar-backdrop.show{opacity:1;visibility:visible;pointer-events:auto}
  .nav-item{min-height:45px;padding:12px 13px}
  .sidebar-footer{padding-top:16px}
  .main{grid-column:auto;min-width:0}
  .topbar{
    height:60px;
    padding:0 12px;
    z-index:40;
    gap:8px;
  }
  .topbar>div:first-child{display:flex;align-items:center;min-width:0;flex:1}
  .breadcrumb{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:14px}
  .mobile-menu{
    display:grid;
    place-items:center;
    width:40px;height:40px;
    flex:0 0 40px;
    margin-right:6px;
    border:1px solid var(--line);
    border-radius:10px;
    background:#fff;
    font-size:21px;
  }
  .top-actions{gap:6px;align-items:center;flex:0 0 auto}
  .top-actions .ghost{display:none}
  .sync-status{font-size:10px;max-width:72px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  #quickAddLesson{padding:8px 10px;font-size:0}
  #quickAddLesson::after{content:"+ Plan";font-size:12px}
  .content{padding:18px 12px 48px}
  .page-head{gap:13px;margin-bottom:18px}
  .page-head h1{font-size:26px;line-height:1.08}
  .page-head>div:last-child{width:100%;display:flex;gap:8px;flex-wrap:wrap}
  .page-head>div:last-child .btn{flex:1 1 auto}
  .modal{padding:10px;align-items:end}
  .modal-card{width:100%;max-height:92dvh;border-radius:18px 18px 8px 8px;padding:20px 16px calc(18px + env(safe-area-inset-bottom))}
  .toast{left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));text-align:center}
}
@media(max-width:420px){
  .sync-status{display:none}
  #quickAddLesson{padding:8px 9px}
  #quickAddLesson::after{content:"+";font-size:18px;line-height:1}
  .topbar{padding:0 9px}
  .content{padding-left:10px;padding-right:10px}
}

.lesson-print-sheet{display:none}