/* EduSafe AI — Design System */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#1a6cf5;--primary-dark:#1254c4;--primary-light:#e8f0fe;
  --primary-lighter:#60a5fa;
  --navy:#0d1b3e;--navy-light:#1a3a6e;
  --success:#22c55e;--warning:#f59e0b;--danger:#ef4444;
  --text:#1e293b;--text-muted:#64748b;--bg:#f0f4fa;--bg-light:#f1f5f9;
  --border:#e2e8f0;--white:#fff;
  --radius:12px;--radius-sm:8px;--radius-lg:16px;
  --shadow:0 4px 24px rgba(26,108,245,0.10);--shadow-lg:0 10px 40px rgba(0,0,0,0.12);
  --font:'Inter','Segoe UI',system-ui,sans-serif;
}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6}
a{text-decoration:none;color:inherit}
.skip-link{position:absolute;top:-40px;left:0;background:var(--primary);color:var(--white);padding:8px 16px;z-index:1000;text-decoration:none;font-weight:600;transition:top .2s}
.skip-link:focus{top:0}
:focus-visible{outline:3px solid var(--primary-lighter);outline-offset:2px;border-radius:4px}

/* ── Nav ── */
.nav{position:sticky;top:0;z-index:100;background:linear-gradient(135deg,var(--navy) 0%,var(--navy-light) 50%,var(--primary) 100%);padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between;box-shadow:0 2px 12px rgba(0,0,0,0.15)}
.nav-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;width:100%}
.nav-brand{display:flex;align-items:center;gap:8px;text-decoration:none;font-weight:800;font-size:1.2rem;color:var(--white);letter-spacing:0.5px}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-links a{text-decoration:none;font-size:0.9rem;font-weight:500;color:rgba(255,255,255,0.85);transition:all .2s;padding:8px 14px;border-radius:var(--radius-sm)}
.nav-links a:hover,.nav-links a.active{background:rgba(255,255,255,0.15);color:var(--white)}
.nav-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--white)}
@media(max-width:768px){
  .nav-toggle{display:block}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--navy);border-bottom:2px solid rgba(255,255,255,0.1);flex-direction:column;padding:16px;gap:4px;box-shadow:var(--shadow-lg)}
  .nav-links.open{display:flex}
  .nav-links a{padding:10px 16px;width:100%;border-radius:var(--radius-sm)}
}

/* ── Container ── */
.container{max-width:960px;margin:0 auto;padding:24px 20px}

/* ── Cards ── */
.card{background:var(--white);border:1px solid var(--border);border-radius:16px;padding:28px;box-shadow:0 4px 20px rgba(0,0,0,0.08);margin-bottom:16px}
.card h2{color:var(--navy);font-size:1.35rem;font-weight:800;margin-bottom:8px;display:flex;align-items:center;gap:8px}

/* ── Tabs ── */
.tabs{display:grid;grid-template-columns:repeat(auto-fit,minmax(76px,1fr));gap:8px;margin-bottom:16px}
.tabs button{background:var(--white);border:2px solid var(--border);padding:10px 8px;border-radius:var(--radius);cursor:pointer;font-size:0.78rem;font-weight:600;color:var(--text);transition:all .2s;display:flex;flex-direction:column;align-items:center;gap:4px;min-height:44px}
.tabs button:hover:not(.active){background:var(--primary-light);transform:translateY(-2px)}
.tabs button.active{background:var(--navy);color:var(--white);border-color:var(--primary)}
.tab-icon{font-size:1.3rem}
.tab{display:none}
.tab.active{display:block;animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ── Forms ── */
.form-row{display:grid;gap:12px;margin-bottom:8px}
.form-row.two{grid-template-columns:1fr 1fr}
@media(max-width:500px){.form-row.two{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:4px;margin-bottom:8px}
label{font-weight:600;font-size:0.875rem;color:var(--text)}
label small{font-weight:400;color:var(--text-muted)}
input,select,textarea{width:100%;padding:12px 14px;border:2px solid var(--border);border-radius:10px;font-size:0.9rem;font-family:inherit;color:var(--text);background:#fafbfc;transition:border-color .2s,box-shadow .2s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);background:var(--white);box-shadow:0 0 0 3px rgba(26,108,245,0.12)}
textarea{resize:vertical;min-height:100px}
.char-counter{font-size:0.75rem;color:var(--text-muted);text-align:right;margin-top:2px}
.hint{background:var(--primary-light);border-left:4px solid var(--primary);padding:12px 16px;border-radius:0 10px 10px 0;margin-bottom:18px;font-size:0.88rem;color:#1e3a5e}

/* ── Buttons ── */
.btn{background:linear-gradient(135deg,var(--navy),var(--primary));color:var(--white);border:none;padding:14px;width:100%;border-radius:var(--radius);font-size:0.95rem;font-weight:700;cursor:pointer;margin:14px 0 8px;letter-spacing:.3px;transition:all .2s;box-shadow:0 4px 15px rgba(26,108,245,0.3);position:relative;z-index:1}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(26,108,245,0.4)}
.btn:disabled{opacity:0.6;cursor:not-allowed;transform:none}
.btn-secondary{background:var(--bg-light);color:var(--text);border:1px solid var(--border);width:auto;display:inline-flex;padding:10px 20px;font-size:0.9rem;font-weight:600}
.btn-secondary:hover{background:var(--border);box-shadow:none}
.btn-sm{padding:6px 12px;font-size:0.8rem;border-radius:8px;width:auto;display:inline-flex}

/* ── Output ── */
.output-wrap{position:relative;margin-top:8px}
.output{background:#f8fafc;border:2px solid var(--border);border-radius:var(--radius);padding:20px;min-height:100px;font-size:0.9rem;line-height:1.75;color:var(--text)}
.output h2,.output h3,.output h4{margin:18px 0 8px;color:var(--navy);font-weight:700}
.output .ai-heading{margin:18px 0 8px;color:var(--navy)}
.output .ai-section{font-size:1rem;font-weight:700;color:var(--navy);margin:22px 0 8px;padding-bottom:4px;border-bottom:1.5px solid #dbe5f0}
.output .ai-section:first-child{margin-top:0}
.output .ai-spacer{height:8px}
.output p{margin:0 0 12px;line-height:1.8}.output p:last-child{margin-bottom:0}
.output ul,.output ol{margin:10px 0 14px;padding-left:24px}
.output li{margin:5px 0;line-height:1.7}
.output li::marker{color:var(--primary)}
.output strong{font-weight:700;color:var(--navy)}
.output code{background:var(--primary-light);padding:1px 5px;border-radius:4px;font-size:.85em}
.output hr{border:none;border-top:1.5px solid #dbe5f0;margin:16px 0}
.copy-btn{position:absolute;top:10px;right:10px;background:linear-gradient(135deg,var(--navy),#2563eb);color:var(--white);border:none;border-radius:8px;padding:6px 14px;font-size:0.75rem;font-weight:600;cursor:pointer;opacity:0;transition:opacity .2s,transform .15s;box-shadow:0 2px 6px rgba(0,0,0,0.2)}
.copy-btn:hover{transform:scale(1.07)}
.output-wrap:hover .copy-btn{opacity:1}
@media(hover:none){.copy-btn{opacity:1}}
.loading{color:var(--text-muted);font-style:italic}
.output.loading{color:var(--text-muted);font-style:italic}
.output.error{color:var(--danger)}
.spinner{display:inline-block;width:16px;height:16px;border:3px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite;vertical-align:middle;margin-right:6px;pointer-events:none}
@keyframes spin{to{transform:rotate(360deg)}}
.new-badge{background:var(--primary-light);color:var(--primary);border:1px solid #bfdbfe;border-radius:12px;padding:2px 8px;font-size:.7em;font-weight:bold;margin-left:8px;vertical-align:middle}

/* ── Related tools ── */
.related-btns{margin-top:12px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.related-label{font-size:0.75rem;color:var(--text-muted);font-weight:600}
.related-btns button{background:var(--primary-light);border:1px solid #bfdbfe;color:var(--primary);border-radius:100px;padding:4px 12px;font-size:0.78rem;font-weight:600;cursor:pointer;transition:all .2s}
.related-btns button:hover{background:#dbeafe;transform:translateY(-1px)}

/* ── Stats Strip ── */
.stats-strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:16px 0}
.stat-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:16px;text-align:center;box-shadow:0 2px 8px rgba(0,0,0,0.04)}
.stat-num{font-size:1.8rem;font-weight:800;color:var(--primary);line-height:1.2}
.stat-label{font-size:0.78rem;color:var(--text-muted);font-weight:500;margin-top:4px}

/* ── Badges ── */
.badge{display:inline-block;padding:2px 8px;border-radius:100px;font-size:0.75rem;font-weight:600}
.badge-green{background:#dcfce7;color:#166534}
.badge-yellow{background:#fef9c3;color:#854d0e}
.badge-red{background:#fef2f2;color:#991b1b}
.badge-gray{background:#f1f5f9;color:#475569}

/* ── Data Table ── */
.data-table{width:100%;border-collapse:collapse;font-size:0.85rem}
.data-table th{background:var(--bg-light);padding:10px 12px;text-align:left;font-weight:600;border-bottom:2px solid var(--border);white-space:nowrap}
.data-table td{padding:10px 12px;border-bottom:1px solid var(--border)}
.data-table tr:hover{background:var(--bg)}

/* ── Progress Bar ── */
.progress-bar{background:var(--border);border-radius:100px;height:8px;overflow:hidden}
.progress-fill{background:var(--primary);height:100%;border-radius:100px;transition:width .3s ease}

/* ── Hero (Landing) ── */
.hero{background:linear-gradient(135deg,var(--navy) 0%,#1a3a6e 50%,var(--primary) 100%);color:var(--white);padding:80px 24px 60px;text-align:center}
.hero-inner{max-width:800px;margin:0 auto}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,0.12);border:1px solid rgba(255,255,255,0.2);border-radius:100px;padding:4px 14px;font-size:0.8rem;font-weight:600;letter-spacing:.04em;margin-bottom:16px}
.hero h1{font-size:clamp(2rem,4vw,3rem);font-weight:800;line-height:1.15;margin-bottom:12px}
.hero p{font-size:1.05rem;opacity:.85;max-width:600px;margin:0 auto 20px}
.hero .btn{display:inline-flex;width:auto;background:var(--white);color:var(--primary);font-size:1.05rem;padding:14px 32px;box-shadow:0 4px 20px rgba(0,0,0,0.2);margin:0}
.hero .btn:hover{background:#f0f0ff;transform:translateY(-2px)}
.hero-badges{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:16px;margin-bottom:28px}
.hero-pill{background:rgba(255,255,255,0.15);border:1px solid rgba(255,255,255,0.25);border-radius:100px;padding:4px 12px;font-size:0.78rem;font-weight:500}

/* ── Feature Cards ── */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin:32px 0}
.feature-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:transform .2s,box-shadow .2s}
.feature-card:hover{transform:translateY(-4px);box-shadow:0 8px 32px rgba(0,0,0,0.1)}
.feature-icon{font-size:2rem;margin-bottom:8px}
.feature-card h3{font-size:1rem;font-weight:700;margin-bottom:6px}
.feature-card p{font-size:0.85rem;color:var(--text-muted)}

/* ── Steps ── */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px;margin:32px 0;text-align:center}
.step-num{width:40px;height:40px;background:var(--primary);color:var(--white);border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:1.1rem;margin-bottom:8px}

/* ── Choice Labels (Practice) ── */
.choice-label{display:block;padding:10px 16px;margin:6px 0;border:2px solid var(--border);border-radius:8px;cursor:pointer;transition:all .2s}
.choice-label:hover{border-color:var(--primary);background:var(--primary-light)}
.choice-label input[type="radio"]{margin-right:10px}

/* ── Footer ── */
.footer{background:var(--navy);color:rgba(255,255,255,0.65);padding:32px 24px;text-align:center;margin-top:40px}
.footer-inner{max-width:800px;margin:0 auto}
.footer-brand{font-weight:800;font-size:1rem;color:var(--white);margin-bottom:8px}
.footer-brand a{color:#93c5fd;text-decoration:none}
.footer-brand a:hover{color:var(--white)}
.footer p{font-size:0.82rem;margin-bottom:4px}
.footer-links{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;text-align:left;max-width:700px;margin:16px auto;flex-wrap:wrap}
.footer-links a,.footer-links span{display:block;color:rgba(255,255,255,0.5);text-decoration:none;font-size:0.82rem;transition:color .2s;margin:4px 0}
.footer-links a:hover{color:var(--white)}
.footer-col h4{color:var(--white);font-size:0.85rem;margin-bottom:8px}
.footer-bottom{margin-top:16px;padding-top:12px;border-top:1px solid rgba(255,255,255,0.1);font-size:0.75rem;color:rgba(255,255,255,0.35)}

hr{border:none;border-top:1px solid var(--border);margin:12px 0}

/* ── Landing Page ── */
.landing-hero{position:relative;overflow:hidden}
.hero-glow{position:absolute;inset:0;background:radial-gradient(ellipse at 70% 20%,rgba(26,108,245,0.3) 0%,transparent 60%);pointer-events:none}
.prepared-by{font-size:0.85rem;opacity:0.7;margin-bottom:8px;font-weight:500}
.landing-title{font-size:clamp(2.2rem,5vw,3.4rem)!important}
.landing-subtitle{font-size:1.1rem;max-width:640px;margin:0 auto 24px}
.badge-pill{display:inline-flex;align-items:center;gap:4px;background:rgba(255,255,255,0.15);border:1px solid rgba(255,255,255,0.25);border-radius:100px;padding:6px 14px;font-size:0.82rem;font-weight:500}
.badge-pill.badge-white{background:rgba(255,255,255,0.2);border-color:rgba(255,255,255,0.3)}
.landing-cta{display:inline-flex!important;width:auto!important;background:var(--white)!important;color:var(--primary)!important;font-size:1.05rem!important;padding:14px 32px!important;box-shadow:0 4px 20px rgba(0,0,0,0.2)!important;border-radius:var(--radius)!important;text-decoration:none;font-weight:700;margin-bottom:32px}
.landing-cta:hover{background:#f0f5ff!important;transform:translateY(-2px)!important}
.landing-section{margin:48px 0}
.section-title{font-size:1.6rem;font-weight:800;color:var(--navy);text-align:center;margin-bottom:8px}
.section-subtitle{text-align:center;color:var(--text-muted);font-size:0.95rem;max-width:600px;margin:0 auto 24px}
.steps-row{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:center;gap:16px;margin:32px 0}
.step-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:28px 20px;text-align:center;box-shadow:var(--shadow);transition:transform .2s}
.step-card:hover{transform:translateY(-4px)}
.step-number{width:36px;height:36px;background:var(--primary);color:var(--white);border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:8px}
.step-icon{font-size:2.2rem;margin-bottom:8px}
.step-card h3{font-size:1rem;font-weight:700;margin-bottom:6px;color:var(--navy)}
.step-card p{font-size:0.85rem;color:var(--text-muted)}
.step-connector{font-size:1.5rem;color:var(--primary);font-weight:700;text-align:center}
.landing-stats-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;background:var(--navy);border-radius:var(--radius);padding:32px 24px;margin:32px 0}
.landing-stat{text-align:center;color:var(--white)}
.landing-stat-num{display:block;font-size:2rem;font-weight:800;color:var(--white);line-height:1.2}
.landing-stat-label{font-size:0.82rem;opacity:0.7;margin-top:4px}
.feature-tag{display:inline-block;background:var(--primary-light);color:var(--primary);padding:2px 10px;border-radius:100px;font-size:0.75rem;font-weight:600;margin-top:8px}
.feature-card-highlight{border-left:4px solid var(--primary)}
.landing-cta-section{text-align:center;background:var(--primary-light);border-radius:var(--radius);padding:48px 24px;margin:48px 0}
.landing-cta-section h2{font-size:1.6rem;font-weight:800;color:var(--navy);margin-bottom:8px}
.landing-cta-section p{color:var(--text-muted);margin-bottom:16px}
.cta-footnote{font-size:0.82rem;color:var(--text-muted);margin-top:12px}

/* ── Print ── */
@media print{.nav,.footer,.btn,.tabs{display:none!important}.container{max-width:100%}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}

/* ── Responsive ── */
@media(max-width:640px){
  .container{padding:16px 12px}
  .card{padding:18px}
  .stats-strip{grid-template-columns:repeat(2,1fr)}
  .hero{padding:48px 16px 40px}
  .steps-row{grid-template-columns:1fr;gap:12px}
  .step-connector{display:none}
  .landing-stats-strip{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .feature-grid{grid-template-columns:1fr}
}