/* ── Reset & base ─────────────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;color:#1a1a2e;line-height:1.6;background:#f8f9fc}
a{text-decoration:none;color:inherit}
button{cursor:pointer}

/* ── Variables ───────────────────────────────────────────────────────────── */
:root{
  --navy:#0d1b3e;
  --purple:#6b46c1;
  --purple-light:#f3f0ff;
  --green:#16a34a;
  --green-light:#dcfce7;
  --red:#dc2626;
  --red-light:#fee2e2;
  --amber:#d97706;
  --amber-light:#fef3c7;
  --border:#e5e7eb;
  --text-muted:#6b7280;
  --radius:10px;
  --shadow:0 1px 4px rgba(0,0,0,.08);
  --shadow-md:0 4px 16px rgba(0,0,0,.1);
}

/* ── Nav ─────────────────────────────────────────────────────────────────── */
.nav{position:sticky;top:0;z-index:100;background:var(--navy);padding:0 2rem;display:flex;align-items:center;justify-content:space-between;height:64px;border-bottom:1px solid rgba(255,255,255,.08)}
.nav-brand{display:flex;align-items:center;gap:10px;color:white;font-weight:700;font-size:1.05rem}
.nav-logo-mark{width:36px;height:36px;background:var(--purple);border-radius:8px;display:flex;align-items:center;justify-content:center;color:white;font-weight:800;font-size:.85rem;letter-spacing:-.5px}
.nav-links{display:flex;align-items:center;gap:1.5rem}
.nav-links a{color:rgba(255,255,255,.75);font-size:.875rem;transition:color .15s}
.nav-links a:hover,.nav-links a.active{color:white}
.nav-pill{background:var(--purple);color:white!important;padding:.35rem .9rem;border-radius:6px;font-weight:600;font-size:.8rem!important}
.nav-pill:hover{background:#553c9a!important}
.nav-user{color:rgba(255,255,255,.6);font-size:.8rem}

/* ── Page wrapper ────────────────────────────────────────────────────────── */
.page{max-width:1200px;margin:0 auto;padding:2rem 2rem}
.page-sm{max-width:640px;margin:0 auto;padding:2rem 2rem}
.page-header{margin-bottom:2rem}
.page-header h1{font-size:1.75rem;font-weight:800;color:var(--navy);margin-bottom:.25rem}
.page-header p{color:var(--text-muted);font-size:.95rem}

/* ── Cards ───────────────────────────────────────────────────────────────── */
.card{background:white;border-radius:var(--radius);border:1px solid var(--border);padding:1.5rem;box-shadow:var(--shadow)}
.card-title{font-size:1rem;font-weight:700;color:var(--navy);margin-bottom:1rem}
.card + .card{margin-top:1rem}

/* ── Stat cards ──────────────────────────────────────────────────────────── */
.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin-bottom:2rem}
.stat-card{background:white;border-radius:var(--radius);border:1px solid var(--border);padding:1.25rem 1.5rem;box-shadow:var(--shadow)}
.stat-num{font-size:2rem;font-weight:800;color:var(--navy);line-height:1}
.stat-label{font-size:.8rem;color:var(--text-muted);margin-top:.25rem;text-transform:uppercase;letter-spacing:.04em}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.6rem 1.25rem;border-radius:7px;font-weight:600;font-size:.875rem;border:none;transition:all .15s;white-space:nowrap}
.btn-primary{background:var(--purple);color:white}.btn-primary:hover{background:#553c9a}
.btn-navy{background:var(--navy);color:white}.btn-navy:hover{background:#1a2a5e}
.btn-success{background:var(--green);color:white}.btn-success:hover{background:#15803d}
.btn-danger{background:var(--red);color:white}.btn-danger:hover{background:#b91c1c}
.btn-outline{background:white;color:var(--navy);border:2px solid var(--border)}.btn-outline:hover{border-color:var(--navy)}
.btn-sm{padding:.4rem .85rem;font-size:.8rem}
.btn-lg{padding:.85rem 2rem;font-size:1rem}

/* ── Forms ───────────────────────────────────────────────────────────────── */
.form-group{margin-bottom:1.25rem}
.form-label{display:block;font-size:.875rem;font-weight:600;color:var(--navy);margin-bottom:.4rem}
.form-input{width:100%;padding:.65rem .9rem;border:1.5px solid var(--border);border-radius:7px;font-size:.9rem;transition:border-color .15s;background:white}
.form-input:focus{outline:none;border-color:var(--purple)}
.form-select{width:100%;padding:.65rem .9rem;border:1.5px solid var(--border);border-radius:7px;font-size:.9rem;background:white}
.form-select:focus{outline:none;border-color:var(--purple)}
.form-textarea{width:100%;padding:.65rem .9rem;border:1.5px solid var(--border);border-radius:7px;font-size:.9rem;min-height:120px;resize:vertical}
.form-textarea:focus{outline:none;border-color:var(--purple)}
.form-hint{font-size:.78rem;color:var(--text-muted);margin-top:.3rem}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}

/* ── Alerts / flash ──────────────────────────────────────────────────────── */
.alert{padding:.85rem 1.1rem;border-radius:7px;font-size:.875rem;margin-bottom:1.25rem;display:flex;align-items:center;gap:.6rem}
.alert-info{background:#eff6ff;border:1px solid #bfdbfe;color:#1e40af}
.alert-success{background:var(--green-light);border:1px solid #86efac;color:#166534}
.alert-warning{background:var(--amber-light);border:1px solid #fcd34d;color:#92400e}
.alert-error{background:var(--red-light);border:1px solid #fca5a5;color:#991b1b}

/* ── Breadcrumb ──────────────────────────────────────────────────────────── */
.breadcrumb{display:flex;align-items:center;gap:.5rem;font-size:.8rem;color:var(--text-muted);margin-bottom:1.5rem}
.breadcrumb a{color:var(--purple)}.breadcrumb a:hover{text-decoration:underline}
.breadcrumb span{color:#9ca3af}

/* ── Table ───────────────────────────────────────────────────────────────── */
.table{width:100%;border-collapse:collapse}
.table th{text-align:left;font-size:.75rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;padding:.75rem 1rem;border-bottom:2px solid var(--border)}
.table td{padding:.85rem 1rem;border-bottom:1px solid var(--border);font-size:.875rem;vertical-align:middle}
.table tr:last-child td{border-bottom:none}
.table tr:hover td{background:#fafafa}

/* ── Badges ──────────────────────────────────────────────────────────────── */
.badge{display:inline-block;padding:.2rem .6rem;border-radius:999px;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em}
.badge-green{background:var(--green-light);color:#166534}
.badge-purple{background:var(--purple-light);color:var(--purple)}
.badge-amber{background:var(--amber-light);color:#92400e}
.badge-red{background:var(--red-light);color:#991b1b}
.badge-grey{background:#f3f4f6;color:#4b5563}

/* ── Progress bar ────────────────────────────────────────────────────────── */
.progress-bar{height:8px;background:#e5e7eb;border-radius:999px;overflow:hidden}
.progress-fill{height:100%;background:var(--purple);border-radius:999px;transition:width .3s}
.progress-fill.green{background:var(--green)}

/* ── Course grid ─────────────────────────────────────────────────────────── */
.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem}
.course-card{background:white;border-radius:var(--radius);border:1px solid var(--border);overflow:hidden;box-shadow:var(--shadow);transition:box-shadow .2s,transform .2s;display:flex;flex-direction:column}
.course-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.course-card-header{background:linear-gradient(135deg,var(--navy),#1a2a5e);padding:1.5rem;min-height:100px;display:flex;align-items:flex-end}
.course-card-header h3{color:white;font-size:1rem;font-weight:700;line-height:1.3}
.course-card-body{padding:1.25rem;flex:1;display:flex;flex-direction:column;gap:.75rem}
.course-card-meta{display:flex;gap:.75rem;flex-wrap:wrap}
.course-card-meta span{font-size:.75rem;color:var(--text-muted);display:flex;align-items:center;gap:.25rem}
.course-card-progress{display:flex;flex-direction:column;gap:.3rem}
.course-card-progress-label{display:flex;justify-content:space-between;font-size:.75rem;color:var(--text-muted)}
.course-card-footer{padding:1rem 1.25rem;border-top:1px solid var(--border);background:#fafafa}

/* ── Admin sidebar layout ────────────────────────────────────────────────── */
.admin-layout{display:grid;grid-template-columns:220px 1fr;gap:2rem;align-items:start}
.sidebar{background:white;border-radius:var(--radius);border:1px solid var(--border);padding:1.25rem;box-shadow:var(--shadow);position:sticky;top:84px}
.sidebar-title{font-size:.7rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.07em;margin-bottom:.75rem;padding:0 .5rem}
.sidebar a{display:flex;align-items:center;gap:.6rem;padding:.6rem .75rem;border-radius:6px;font-size:.875rem;font-weight:500;color:#374151;transition:background .15s}
.sidebar a:hover{background:#f3f4f6}
.sidebar a.active{background:var(--purple-light);color:var(--purple);font-weight:600}
.sidebar-section{margin-top:1.25rem;padding-top:1.25rem;border-top:1px solid var(--border)}

/* ── Course builder ──────────────────────────────────────────────────────── */
.builder-layout{display:grid;grid-template-columns:1fr 360px;gap:2rem;align-items:start}
.module-block{background:white;border-radius:var(--radius);border:1px solid var(--border);overflow:hidden;margin-bottom:1rem;box-shadow:var(--shadow)}
.module-header{background:#f8f9fc;padding:.9rem 1.25rem;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}
.module-title{font-weight:700;font-size:.95rem;color:var(--navy)}
.lesson-list{padding:.5rem 0}
.lesson-item{display:flex;align-items:center;gap:.75rem;padding:.6rem 1.25rem;border-bottom:1px solid #f3f4f6;font-size:.875rem}
.lesson-item:last-child{border-bottom:none}
.lesson-icon{width:28px;height:28px;border-radius:6px;background:var(--purple-light);display:flex;align-items:center;justify-content:center;font-size:.85rem;flex-shrink:0}
.lesson-meta{font-size:.75rem;color:var(--text-muted)}
.add-lesson-form{padding:1rem 1.25rem;background:#fafafa;border-top:1px solid var(--border)}

/* ── Quiz builder ────────────────────────────────────────────────────────── */
.question-block{background:white;border-radius:var(--radius);border:1px solid var(--border);padding:1.25rem;margin-bottom:1rem;box-shadow:var(--shadow)}
.question-num{display:inline-block;background:var(--navy);color:white;width:24px;height:24px;border-radius:50%;font-size:.75rem;font-weight:700;display:inline-flex;align-items:center;justify-content:center;margin-right:.5rem;flex-shrink:0}
.answer-option{display:flex;align-items:center;gap:.75rem;padding:.5rem .75rem;border-radius:6px;margin-bottom:.4rem;font-size:.875rem}
.answer-option.correct{background:var(--green-light);border:1px solid #86efac}
.answer-option.wrong{background:#f9fafb;border:1px solid var(--border)}

/* ── Lesson viewer ───────────────────────────────────────────────────────── */
.lesson-layout{display:grid;grid-template-columns:280px 1fr;gap:2rem;align-items:start}
.lesson-nav{background:white;border-radius:var(--radius);border:1px solid var(--border);padding:1rem;box-shadow:var(--shadow);position:sticky;top:84px;max-height:calc(100vh - 100px);overflow-y:auto}
.lesson-nav-module{margin-bottom:1rem}
.lesson-nav-module-title{font-size:.75rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;padding:.4rem .5rem;margin-bottom:.25rem}
.lesson-nav-item{display:flex;align-items:center;gap:.6rem;padding:.5rem .75rem;border-radius:6px;font-size:.825rem;color:#374151;transition:background .15s}
.lesson-nav-item:hover{background:#f3f4f6}
.lesson-nav-item.active{background:var(--purple-light);color:var(--purple);font-weight:600}
.lesson-nav-item.done .check{color:var(--green)}
.lesson-nav-item .check{width:16px;height:16px;border-radius:50%;border:1.5px solid #d1d5db;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:.65rem}
.lesson-nav-item.done .check{background:var(--green);border-color:var(--green);color:white}
.lesson-content{background:white;border-radius:var(--radius);border:1px solid var(--border);padding:2rem;box-shadow:var(--shadow)}
.lesson-content h1{font-size:1.5rem;font-weight:800;color:var(--navy);margin-bottom:1.5rem}
.lesson-body{font-size:.95rem;line-height:1.8;color:#374151}
.lesson-body p{margin-bottom:1rem}
.lesson-body h2{font-size:1.1rem;font-weight:700;color:var(--navy);margin:1.5rem 0 .75rem}
.lesson-body ul,
.lesson-body ol{padding-left:1.5rem;margin-bottom:1rem}
.lesson-body li{margin-bottom:.4rem}
.video-embed{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:8px;margin-bottom:1.5rem}
.video-embed iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:none}
.lesson-footer{display:flex;justify-content:space-between;align-items:center;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border)}

/* ── Quiz taking ─────────────────────────────────────────────────────────── */
.quiz-wrapper{max-width:720px;margin:0 auto}
.quiz-header{background:white;border-radius:var(--radius);border:1px solid var(--border);padding:1.5rem;margin-bottom:1.5rem;box-shadow:var(--shadow)}
.quiz-q-block{background:white;border-radius:var(--radius);border:1px solid var(--border);padding:1.5rem;margin-bottom:1rem;box-shadow:var(--shadow)}
.quiz-q-text{font-size:1rem;font-weight:600;color:var(--navy);margin-bottom:1rem;display:flex;gap:.75rem}
.quiz-answers{display:flex;flex-direction:column;gap:.5rem}
.quiz-answer-label{display:flex;align-items:center;gap:.75rem;padding:.8rem 1rem;border-radius:7px;border:1.5px solid var(--border);cursor:pointer;transition:all .15s;font-size:.9rem}
.quiz-answer-label:hover{border-color:var(--purple);background:var(--purple-light)}
.quiz-answer-label input[type=radio]{accent-color:var(--purple)}
.quiz-answer-label.selected{border-color:var(--purple);background:var(--purple-light)}

/* ── Quiz result ─────────────────────────────────────────────────────────── */
.result-circle{width:140px;height:140px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;margin:0 auto 1.5rem;border:6px solid var(--border)}
.result-circle.pass{border-color:var(--green);background:var(--green-light)}
.result-circle.fail{border-color:var(--red);background:var(--red-light)}
.result-pct{font-size:2.2rem;font-weight:800}
.result-circle.pass .result-pct{color:var(--green)}
.result-circle.fail .result-pct{color:var(--red)}
.result-label{font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em}

/* ── Certificate ─────────────────────────────────────────────────────────── */
.certificate{background:white;border:8px solid var(--navy);border-radius:4px;padding:4rem;text-align:center;max-width:760px;margin:0 auto;position:relative}
.certificate::before{content:'';position:absolute;inset:12px;border:2px solid var(--purple);border-radius:2px;pointer-events:none}
.cert-logo{font-size:2.5rem;margin-bottom:1rem}
.cert-presented{font-size:.85rem;text-transform:uppercase;letter-spacing:.15em;color:var(--text-muted);margin-bottom:.5rem}
.cert-name{font-size:2.5rem;font-weight:800;color:var(--navy);margin-bottom:1rem;font-style:italic}
.cert-body{font-size:1rem;color:#4b5563;margin-bottom:.5rem}
.cert-course{font-size:1.6rem;font-weight:800;color:var(--purple);margin-bottom:2rem;line-height:1.3}
.cert-meta{display:flex;justify-content:center;gap:3rem;border-top:1px solid var(--border);padding-top:1.5rem;margin-top:2rem}
.cert-meta-item{text-align:center}
.cert-meta-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:.25rem}
.cert-meta-value{font-size:.9rem;font-weight:700;color:var(--navy)}
.cert-verify{font-size:.7rem;color:var(--text-muted);margin-top:1.5rem}
.cert-actions{display:flex;gap:.75rem;justify-content:center;margin-top:2rem}
@media print{
  .nav,.cert-actions,.breadcrumb{display:none}
  .certificate{border-width:4px;padding:2rem}
  body{background:white}
}

/* ── Landing page ────────────────────────────────────────────────────────── */
.landing-hero{background:linear-gradient(135deg,var(--navy) 0%,#1a2a5e 100%);color:white;text-align:center;padding:6rem 2rem 5rem}
.landing-hero h1{font-size:clamp(2.2rem,5vw,3.5rem);font-weight:800;line-height:1.1;margin-bottom:1.25rem}
.landing-hero h1 span{color:#a78bfa}
.landing-hero p{font-size:1.1rem;color:rgba(255,255,255,.75);max-width:560px;margin:0 auto 2.5rem}
.landing-btns{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.landing-btn-white{background:white;color:var(--navy);padding:.8rem 2rem;border-radius:8px;font-weight:700;font-size:1rem;transition:transform .15s,box-shadow .15s}
.landing-btn-white:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(255,255,255,.2)}
.landing-btn-outline{border:2px solid rgba(255,255,255,.4);color:white;padding:.8rem 2rem;border-radius:8px;font-weight:600;font-size:1rem;transition:all .15s}
.landing-btn-outline:hover{border-color:white;background:rgba(255,255,255,.05)}

.landing-features{padding:5rem 2rem;background:#f8f9fc}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:2rem;max-width:1000px;margin:0 auto}
.feature-item{background:white;border-radius:var(--radius);border:1px solid var(--border);padding:1.75rem;box-shadow:var(--shadow)}
.feature-icon{width:48px;height:48px;border-radius:10px;background:var(--purple-light);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:1rem}
.feature-item h3{font-size:1rem;font-weight:700;color:var(--navy);margin-bottom:.4rem}
.feature-item p{font-size:.875rem;color:var(--text-muted);line-height:1.6}

.landing-pricing{padding:5rem 2rem;background:white}
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5rem;max-width:860px;margin:2rem auto 0}
.price-card{background:white;border-radius:var(--radius);border:2px solid var(--border);padding:2rem;position:relative}
.price-card.featured{border-color:var(--purple)}
.price-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--purple);color:white;font-size:.7rem;font-weight:700;padding:.25rem .75rem;border-radius:999px;text-transform:uppercase;letter-spacing:.05em;white-space:nowrap}
.price-tier{font-size:.7rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.1em;margin-bottom:.5rem}
.price-amount{font-size:2.2rem;font-weight:800;color:var(--navy)}
.price-amount span{font-size:1rem;font-weight:400;color:var(--text-muted)}
.price-desc{font-size:.875rem;color:var(--text-muted);margin:.5rem 0 1.5rem}
.price-features{list-style:none;margin-bottom:2rem}
.price-features li{font-size:.875rem;color:#4b5563;padding:.3rem 0;display:flex;gap:.5rem}
.price-features li::before{content:"✅";font-size:.8rem;flex-shrink:0}
.price-btn{display:block;text-align:center;padding:.75rem;border-radius:8px;font-weight:600;border:2px solid var(--navy);color:var(--navy);transition:all .15s}
.price-btn:hover{background:var(--navy);color:white}
.price-btn.featured-btn{background:var(--purple);color:white;border-color:var(--purple)}
.price-btn.featured-btn:hover{background:#553c9a}

/* ── Auth pages ──────────────────────────────────────────────────────────── */
.auth-wrap{min-height:calc(100vh - 64px);display:flex;align-items:center;justify-content:center;padding:2rem}
.auth-card{background:white;border-radius:var(--radius);border:1px solid var(--border);padding:2.5rem;width:100%;max-width:440px;box-shadow:var(--shadow-md)}
.auth-card h1{font-size:1.5rem;font-weight:800;color:var(--navy);margin-bottom:.4rem}
.auth-card p{color:var(--text-muted);font-size:.9rem;margin-bottom:2rem}
.auth-footer{text-align:center;font-size:.875rem;color:var(--text-muted);margin-top:1.5rem}
.auth-footer a{color:var(--purple);font-weight:600}

/* ── Section header ──────────────────────────────────────────────────────── */
.section-header{text-align:center;margin-bottom:2.5rem}
.section-header h2{font-size:1.75rem;font-weight:800;color:var(--navy);margin-bottom:.4rem}
.section-header p{color:var(--text-muted)}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media(max-width:900px){
  .admin-layout{grid-template-columns:1fr}
  .sidebar{position:static}
  .builder-layout{grid-template-columns:1fr}
  .lesson-layout{grid-template-columns:1fr}
  .lesson-nav{position:static;max-height:none}
  .form-row{grid-template-columns:1fr}
}
@media(max-width:640px){
  .page,.page-sm{padding:1.25rem 1rem}
  .nav{padding:0 1rem}
  .nav-links{gap:.75rem}
  .landing-hero{padding:3.5rem 1.5rem 3rem}
  .stats-row{grid-template-columns:repeat(2,1fr)}
  .cert-meta{gap:1.5rem}
  .certificate{padding:2rem 1.5rem}
}