*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#0a0e17;--bg2:#111827;--bg3:#1e293b;--border:#2d3748;--text:#e2e8f0;--dim:#94a3b8;--pri:#3b82f6;--pri2:#2563eb;--ok:#10b981;--warn:#f59e0b;--err:#ef4444;--purple:#8b5cf6;--cyan:#06b6d4;--sidebar-w:260px}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);display:flex;height:100vh;overflow:hidden}
.sidebar{width:var(--sidebar-w);background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0;transition:width .2s}
.sidebar.collapsed{width:50px}.sidebar.collapsed .logo span,.sidebar.collapsed .nav-item span,.sidebar.collapsed .module-list,.sidebar.collapsed .sidebar-footer span,.sidebar.collapsed .module-list-title{display:none}
.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--border)}
.logo{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600;color:var(--cyan)}
.logo i{font-size:22px}
.sidebar-toggle{background:none;border:none;color:var(--dim);cursor:pointer;font-size:16px;padding:4px}
.sidebar-toggle:hover{color:var(--text)}
.sidebar-nav{display:flex;flex-direction:column;padding:8px;gap:2px}
.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:6px;color:var(--dim);text-decoration:none;font-size:14px;transition:all .15s}
.nav-item:hover{background:var(--bg3);color:var(--text)}
.nav-item.active{background:rgba(59,130,246,.15);color:var(--pri)}
.nav-item i{width:18px;text-align:center}
.module-list{flex:1;overflow-y:auto;padding:8px;border-top:1px solid var(--border);margin-top:4px}
.module-list-title{font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--dim);padding:8px 12px 4px}
.module-item{display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:6px;cursor:pointer;font-size:13px;color:var(--dim);transition:all .15s}
.module-item:hover{background:var(--bg3);color:var(--text)}
.module-item.active{background:rgba(59,130,246,.1);color:var(--text)}
.module-item .dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.module-lessons{display:none;padding-left:28px}.module-lessons.open{display:block}
.lesson-item{padding:6px 12px;font-size:12px;color:var(--dim);cursor:pointer;border-radius:4px;transition:all .15s}
.lesson-item:hover{background:var(--bg3);color:var(--text)}
.lesson-item.done{color:var(--ok)}.lesson-item.done::before{content:'\2713 '}
.sidebar-footer{padding:12px 16px;border-top:1px solid var(--border)}
.progress-bar-mini{height:4px;background:var(--bg3);border-radius:2px;overflow:hidden;margin-bottom:6px}
.progress-fill-mini{height:100%;background:var(--pri);border-radius:2px;transition:width .3s;width:0}
.progress-label{font-size:11px;color:var(--dim)}
.main-content{flex:1;overflow-y:auto}
.view{display:none;padding:32px}.view.active{display:block}
.view-header{margin-bottom:28px}.view-header h1{font-size:26px;font-weight:700;margin-bottom:6px}.subtitle{color:var(--dim);font-size:14px}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:28px}
.stat-card{background:var(--bg2);border:1px solid var(--border);border-radius:8px;padding:18px;display:flex;align-items:center;gap:14px}
.stat-icon{width:42px;height:42px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px}
.stat-value{font-size:22px;font-weight:700;display:block}.stat-label{font-size:11px;color:var(--dim)}
.section-title{font-size:17px;font-weight:600;margin-bottom:14px}
.module-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.module-card{background:var(--bg2);border:1px solid var(--border);border-radius:8px;padding:22px;cursor:pointer;transition:all .2s;position:relative;overflow:hidden}
.module-card:hover{border-color:var(--pri);transform:translateY(-2px)}
.module-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px}
.module-card-icon{width:38px;height:38px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;margin-bottom:10px}
.module-card h3{font-size:15px;margin-bottom:5px}.module-card p{font-size:12px;color:var(--dim);margin-bottom:10px}
.module-card-meta{font-size:11px;color:var(--dim)}
.lesson-layout{display:grid;grid-template-columns:1fr 1fr;gap:0;height:calc(100vh - 64px);margin:-32px}
.lesson-content{padding:24px;overflow-y:auto;line-height:1.7;font-size:14px;border-right:1px solid var(--border)}
.lesson-content h1{font-size:22px;margin-bottom:10px}.lesson-content h2{font-size:17px;margin:18px 0 6px;color:var(--pri)}
.lesson-content p{margin-bottom:10px}.lesson-content ul,.lesson-content ol{padding-left:18px;margin-bottom:10px}
.lesson-content li{margin-bottom:3px}
.lesson-content code{background:var(--bg3);padding:2px 5px;border-radius:3px;font-size:13px;font-family:'Fira Code',Consolas,monospace}
.lesson-content pre{background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:14px;overflow-x:auto;margin-bottom:14px}
.lesson-content pre code{background:none;padding:0}
.lesson-content strong{color:var(--warn)}
.lesson-sim{display:flex;flex-direction:column;height:100%}
.sim-toolbar{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;background:var(--bg2);border-bottom:1px solid var(--border);flex-shrink:0}
.sim-title{font-size:13px;font-weight:500;color:var(--dim);display:flex;align-items:center;gap:6px}
.sim-actions{display:flex;gap:6px}
.sim-canvas{flex:1;padding:20px;overflow:auto;background:var(--bg);display:flex;align-items:center;justify-content:center}
.sim-canvas-full{height:calc(100vh - 180px)}
.sim-feedback{padding:10px 14px;background:var(--bg2);border-top:1px solid var(--border);font-size:12px;color:var(--dim);flex-shrink:0;min-height:40px}
.challenges-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.challenge-card{background:var(--bg2);border:1px solid var(--border);border-radius:8px;padding:18px;cursor:pointer;transition:all .2s}
.challenge-card:hover{border-color:var(--pri)}
.challenge-card h3{font-size:14px;margin-bottom:6px}.challenge-card p{font-size:12px;color:var(--dim);margin-bottom:10px}
.diff{display:inline-block;padding:2px 8px;border-radius:10px;font-size:10px;font-weight:600}
.diff-easy{background:rgba(16,185,129,.15);color:var(--ok)}.diff-medium{background:rgba(245,158,11,.15);color:var(--warn)}.diff-hard{background:rgba(239,68,68,.15);color:var(--err)}
.btn{display:inline-flex;align-items:center;gap:5px;padding:7px 14px;border:none;border-radius:6px;font-size:12px;font-weight:500;cursor:pointer;transition:all .15s}
.btn-sm{padding:4px 9px;font-size:11px}
.btn-primary{background:var(--pri);color:#fff}.btn-primary:hover{background:var(--pri2)}
.btn-secondary{background:var(--bg3);color:var(--text)}.btn-secondary:hover{background:var(--border)}
.btn-ghost{background:transparent;color:var(--dim)}.btn-ghost:hover{background:var(--bg3);color:var(--text)}
::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.hidden{display:none!important}

/* Simulation-specific styles */
.sim-component{cursor:grab;user-select:none;transition:opacity .15s}
.sim-component:hover{opacity:.85}
.sim-component.placed{cursor:default}
.sim-wire{stroke-width:2;fill:none;cursor:pointer}
.sim-pin{cursor:pointer;transition:r .15s}
.sim-pin:hover{r:6}
.sim-dropzone{stroke-dasharray:5,5;stroke:var(--dim);fill:transparent;transition:all .15s}
.sim-dropzone.active{stroke:var(--ok);fill:rgba(16,185,129,.05)}
.cable-wire{height:32px;border-radius:4px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;cursor:grab;user-select:none;transition:all .15s;padding:0 16px}
.cable-wire.dragging{opacity:.5}
.cable-slot{height:28px;border:2px dashed var(--border);border-radius:4px;display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--dim);transition:all .15s}
.cable-slot.filled{border-style:solid}
.cable-slot.correct{border-color:var(--ok);background:rgba(16,185,129,.1)}
.cable-slot.wrong{border-color:var(--err);background:rgba(239,68,68,.1)}
.wifi-room{stroke:var(--border);stroke-width:2;fill:var(--bg3);cursor:pointer;transition:all .15s}
.wifi-room:hover{fill:var(--bg2)}
.wifi-ap{fill:var(--cyan);cursor:grab}
.wifi-signal{fill:rgba(6,182,212,.15);pointer-events:none}
.keystone-slot{width:40px;height:20px;border:2px solid var(--border);border-radius:3px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:9px;font-weight:600;transition:all .15s}
.keystone-slot.wired{border-color:var(--ok)}
.device-node{cursor:pointer;transition:opacity .15s}
.device-node:hover{opacity:.8}
.device-line{stroke:var(--border);stroke-width:2;stroke-dasharray:5,5}
.device-line.connected{stroke:var(--ok);stroke-dasharray:none}

/* Theory learning styles */
.theory-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}
.theory-card{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:20px;cursor:pointer;transition:all .2s}
.theory-card:hover{border-color:var(--pri);transform:translateY(-2px)}
.theory-icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;margin-bottom:12px}
.theory-card h3{font-size:16px;margin-bottom:6px}
.theory-card p{font-size:12px;color:var(--dim);margin-bottom:12px}
.theory-lessons{display:flex;flex-direction:column;gap:8px;margin-top:12px;padding-top:12px;border-top:1px solid var(--border)}
.theory-lesson{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;background:var(--bg3);border-radius:6px;transition:all .15s}
.theory-lesson:hover{background:var(--border)}
.theory-lesson .name{font-size:13px}
.theory-lesson .score{font-size:11px;color:var(--ok);font-weight:600}
.theory-lesson .score.low{color:var(--warn)}
.theory-lesson .score.good{color:var(--cyan)}
.theory-lesson .score.excellent{color:var(--ok)}
.theory-lesson .score.missing{color:var(--dim)}

/* Quiz styles */
.quiz-container{margin-top:20px}
.quiz-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.quiz-title{font-size:18px;font-weight:600}
.quiz-content{display:flex;flex-direction:column;gap:18px}
.quiz-question{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:18px}
.quiz-question-header{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.question-num{font-size:12px;font-weight:600;color:var(--text)}
.question-type{font-size:11px;padding:3px 10px;border-radius:10px;background:var(--bg3);color:var(--dim)}
.quiz-question-text{font-size:14px;margin-bottom:14px;line-height:1.6}
.quiz-options{display:flex;flex-direction:column;gap:8px}
.quiz-option{display:flex;align-items:center;gap:12px;padding:12px 14px;background:var(--bg3);border-radius:8px;cursor:pointer;transition:all .15s;border:2px solid transparent}
.quiz-option:hover{background:var(--border)}
.quiz-option.selected{border-color:var(--pri);background:rgba(59,130,246,.1)}
.quiz-option label{display:flex;align-items:center;gap:10px;cursor:pointer;width:100%}
.quiz-option input{width:18px;height:18px;cursor:pointer}
.option-label{font-size:13px;line-height:1.5}
.quiz-actions{margin-top:24px;display:flex;justify-content:flex-end;padding-bottom:20px}

/* Quiz result styles */
.quiz-result{margin-top:20px}
.result-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.result-content{display:flex;flex-direction:column;gap:24px}
.result-summary{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:26px;display:flex;align-items:center;justify-content:center;gap:24px}
.result-score-circle{width:120px;height:120px;border-radius:50%;border:4px solid #ddd;display:flex;flex-direction:column;align-items:center;justify-content:center}
.result-score-number{font-size:42px;font-weight:800;line-height:1}
.result-score-label{font-size:13px;color:var(--dim);margin-top:4px}
.result-info{text-align:left}
.result-info h2{font-size:22px;font-weight:700;margin-bottom:8px}
.result-info p{font-size:14px;color:var(--dim);margin-bottom:6px}
.result-course{font-size:13px;color:var(--text);background:var(--bg3);padding:6px 12px;border-radius:6px;display:inline-block;margin-top:6px}
.result-detail-title{font-size:17px;font-weight:600;margin-bottom:12px}
.result-detail{display:flex;flex-direction:column;gap:12px;margin-bottom:20px}
.result-question{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:16px}
.result-question.correct{border-color:var(--ok);background:rgba(16,185,129,.05)}
.result-question.wrong{border-color:var(--err);background:rgba(239,68,68,.05)}
.result-question-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.result-question-num{font-size:13px;font-weight:600}
.result-question-status{font-size:13px;font-weight:600;display:flex;align-items:center;gap:6px}
.result-question.correct .result-question-status{color:var(--ok)}
.result-question.wrong .result-question-status{color:var(--err)}
.result-question-text{font-size:14px;margin-bottom:12px;line-height:1.6}
.result-answer{font-size:13px;color:var(--dim);margin-bottom:6px}
.result-answer-correct{font-size:13px;color:var(--ok);font-weight:600;margin-bottom:10px}
.result-explanation{font-size:12px;color:var(--text);background:var(--bg3);padding:10px 14px;border-radius:6px;line-height:1.6}
.result-actions{margin-top:20px;display:flex;gap:12px;justify-content:center}

/* Safety module styles */
.safety-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:16px}
.safety-card{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:22px}
.safety-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;margin-bottom:14px}
.safety-card h3{font-size:16px;margin-bottom:12px}
.safety-card ul{padding-left:18px;display:flex;flex-direction:column;gap:8px}
.safety-card li{font-size:13px;color:var(--text);line-height:1.6}
.safety-quick-quiz{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:20px}
.quiz-intro{text-align:center}
.quiz-intro p{font-size:13px;color:var(--dim);margin-bottom:14px}

/* Scores module styles */
.scores-overview{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:24px}
.score-card{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:20px;text-align:center}
.score-card.total-score{border-color:var(--purple);background:linear-gradient(135deg,rgba(139,92,246,.1),transparent)}
.score-card.theory-score{border-color:var(--cyan);background:linear-gradient(135deg,rgba(6,182,212,.1),transparent)}
.score-card.practical-score{border-color:var(--ok);background:linear-gradient(135deg,rgba(16,185,129,.1),transparent)}
.score-card.telecom-card{border-color:var(--warn);background:linear-gradient(135deg,rgba(245,158,11,.1),transparent)}
.score-value{font-size:40px;font-weight:800;margin-bottom:6px}
.score-label{font-size:13px;color:var(--dim);margin-bottom:6px}
.score-level{font-size:14px;font-weight:600}
.score-level.ok{color:var(--ok)}.score-level.warn{color:var(--warn)}.score-level.err{color:var(--err)}
.score-sub{font-size:11px;color:var(--dim)}
.score-sub.ok{color:var(--ok)}
.scores-detail{display:flex;flex-direction:column;gap:20px}
.score-section-card{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:20px}
.score-section-card .section-title{margin:0 0 12px 0;font-size:16px;font-weight:700;display:flex;align-items:center}
.scores-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin-top:12px}
.score-item{background:var(--bg3);border-radius:8px;padding:14px;display:flex;align-items:center;justify-content:space-between}
.score-item .name{font-size:13px}
.score-item .value{font-size:14px;font-weight:700}
.score-item .value.ok{color:var(--ok)}.score-item .value.warn{color:var(--warn)}.score-item .value.err{color:var(--err)}.score-item .value.missing{color:var(--dim)}
.score-item .value.excellent{color:var(--ok)}.score-item .value.good{color:var(--pri)}.score-item .value.low{color:var(--warn)}
.score-summary{grid-column:1/-1;background:linear-gradient(135deg,rgba(59,130,246,.1),rgba(139,92,246,.1));border:1px solid rgba(59,130,246,.3);border-radius:8px;padding:16px;display:flex;align-items:center;justify-content:center;gap:8px}
.score-summary .summary-label{font-size:14px;font-weight:600;color:var(--pri)}
.score-summary .summary-value{font-size:14px;color:var(--text)}
.cert-section{margin-top:24px}
.cert-card{background:linear-gradient(135deg,rgba(139,92,246,.15),rgba(6,182,212,.1));border:1px solid var(--purple);border-radius:12px;padding:28px;text-align:center}
.cert-icon{font-size:56px;color:var(--purple);margin-bottom:14px}
.cert-card h3{font-size:20px;margin-bottom:8px}
.cert-card p{font-size:13px;color:var(--dim);margin-bottom:18px}

/* Admin management styles */
.admin-container{display:flex;height:100vh}
.admin-sidebar{width:220px;background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0}
.admin-logo{padding:18px;font-size:16px;font-weight:700;color:var(--cyan);display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border)}
.admin-nav{display:flex;flex-direction:column;padding:10px;gap:2px;flex:1}
.admin-nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:6px;color:var(--dim);text-decoration:none;font-size:14px;transition:all .15s}
.admin-nav-item:hover{background:var(--bg3);color:var(--text)}
.admin-nav-item.active{background:rgba(59,130,246,.15);color:var(--pri)}
.admin-main{flex:1;display:flex;flex-direction:column;overflow:hidden}
.admin-login{flex:1;display:flex;align-items:center;justify-content:center;background:var(--bg3)}
.login-box{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:32px;width:360px}
.login-header{text-align:center;margin-bottom:24px}
.login-header i{font-size:48px;color:var(--pri);margin-bottom:12px}
.login-header h2{font-size:20px;font-weight:700}
.login-form{display:flex;flex-direction:column;gap:16px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group label{font-size:13px;color:var(--dim)}
.form-group input{padding:10px 12px;background:var(--bg3);border:1px solid var(--border);border-radius:6px;color:var(--text);font-size:14px;outline:none;transition:border-color .15s}
.form-group input:focus{border-color:var(--pri)}
.login-hint{text-align:center;font-size:12px;color:var(--dim);margin-top:8px}
.admin-header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;background:var(--bg2);border-bottom:1px solid var(--border);flex-shrink:0}
.header-left{display:flex;align-items:center;gap:16px}
.page-title{font-size:18px;font-weight:700}
.header-right{display:flex;align-items:center;gap:12px}
.admin-info{display:flex;align-items:center;gap:8px;color:var(--text);font-size:14px}
.admin-info i{font-size:22px;color:var(--dim)}
.admin-content{flex:1;overflow-y:auto;padding:24px}
.admin-view{display:none}
.admin-view.active{display:block}
.admin-stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-bottom:24px}
.admin-stat-card{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:18px;display:flex;align-items:center;gap:14px}
.admin-section{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:20px}
.admin-section h3{font-size:17px;font-weight:600;margin-bottom:16px}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.section-header h3{margin:0}
.progress-overview{display:flex;flex-direction:column;gap:12px}
.progress-item{display:flex;flex-direction:column;gap:6px}
.progress-item .progress-info{display:flex;align-items:center;justify-content:space-between}
.progress-item .name{font-size:14px}
.progress-item .pct{font-size:13px;color:var(--dim)}
.students-table-container{overflow-x:auto}
.students-table{width:100%;border-collapse:collapse}
.students-table th,.students-table td{padding:12px;text-align:left;border-bottom:1px solid var(--border);font-size:13px}
.students-table th{color:var(--dim);font-weight:600;background:var(--bg3)}
.cert-status{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:12px;font-size:12px;font-weight:600}
.cert-status.ok{background:rgba(16,185,129,.15);color:var(--ok)}
.cert-status.no{background:rgba(148,163,184,.15);color:var(--dim)}
.classes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.class-card{background:var(--bg3);border:1px solid var(--border);border-radius:10px;padding:18px}
.class-card h4{font-size:15px;margin-bottom:8px}
.class-card p{font-size:12px;color:var(--dim)}
.export-options{display:flex;gap:12px;margin-bottom:20px}
.preview-area{background:var(--bg3);border:1px dashed var(--border);border-radius:8px;padding:24px;text-align:center;color:var(--dim);font-size:13px}
.modal{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:1000}
.modal-content{background:var(--bg2);border:1px solid var(--border);border-radius:12px;width:420px;max-width:90%}
.modal-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.modal-header h3{font-size:16px;font-weight:700}
.close-btn{background:none;border:none;color:var(--dim);font-size:16px;cursor:pointer}
.close-btn:hover{color:var(--text)}
.modal-body{padding:20px}
.modal-footer{padding:14px 20px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:10px}

/* Troubleshooting module styles */
.troubleshooting-grid{margin-top:8px}
.case-card:hover{border-color:var(--pri);transform:translateY(-2px)}
.case-header,.lesson-header,.exam-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.case-title,.lesson-title,.exam-title{font-size:18px;font-weight:600}
.case-content{margin-bottom:24px}
.steps-container{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:20px}
.step-item{transition:all .2s}
.case-actions{margin-top:20px;display:flex;justify-content:flex-end;padding-bottom:20px}

/* Service module styles */
.service-grid{margin-top:8px}
.lesson-card:hover{border-color:var(--pri);transform:translateY(-2px)}

/* Exams module styles */
.exams-grid{margin-top:8px}
.level-card{transition:all .2s}
.level-card:hover{transform:translateY(-2px)}
.exam-detail{padding-top:8px}

/* Archive module styles */
.archive-tabs{display:flex;gap:8px;margin-bottom:20px;border-bottom:1px solid var(--border);padding-bottom:1px}
.archive-tabs .tab-btn{padding:10px 18px;background:none;border:none;color:var(--dim);font-size:14px;cursor:pointer;border-bottom:2px solid transparent;transition:all .15s;margin-bottom:-1px}
.archive-tabs .tab-btn:hover{color:var(--text)}
.archive-tabs .tab-btn.active{color:var(--pri);border-bottom-color:var(--pri)}
.archive-content{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:0}