/* ==========================================================================
   Incident Management Academy — design system
   Single source of truth. Every page loads this file and nothing else
   except an optional page-scoped block.
   ========================================================================== */

:root{
  /* --- Navy ------------------------------------------------------------ */
  --navy-900:#0B1F3A;
  --navy-800:#122C4F;
  --navy-700:#16345C;

  /* --- Amber ----------------------------------------------------------- */
  --amber-500:#F5A623;
  --amber-400:#F7B84D;
  --amber-grad:linear-gradient(90deg,#F5A623,#F7B84D);

  /* --- Surfaces -------------------------------------------------------- */
  --page:#EEF1F6;
  --panel:#F7F9FC;
  --white:#FFFFFF;

  /* --- Text ------------------------------------------------------------ */
  --ink:#444444;
  --ink-soft:#555555;
  --ink-softer:#666666;
  --muted:#8892A3;
  --on-navy:#FFFFFF;
  --on-navy-soft:#B9C6DA;

  /* --- Lines ----------------------------------------------------------- */
  --rule:#D8DFEA;
  --rule-strong:#C3CEDE;
  --rule-navy:rgba(185,198,218,.22);

  /* --- Status ---------------------------------------------------------- */
  --ok:#2E7D5B;
  --warn:#B4741A;

  /* --- Type ------------------------------------------------------------ */
  --font:"Helvetica Neue",Helvetica,Arial,"Liberation Sans",sans-serif;
  --lh-body:1.6;

  /* --- Space ----------------------------------------------------------- */
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px;
  --s6:32px; --s7:48px; --s8:64px; --s9:96px;

  /* --- Geometry -------------------------------------------------------- */
  --r-sharp:0;
  --r-card:4px;
  --r-pill:999px;

  --shadow-card:0 1px 2px rgba(11,31,58,.06), 0 4px 16px rgba(11,31,58,.06);
  --shadow-lift:0 2px 4px rgba(11,31,58,.08), 0 12px 32px rgba(11,31,58,.10);

  --max:1160px;
  --max-prose:68ch;
}

*,*::before,*::after{ box-sizing:border-box; }

html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{
    animation-duration:.01ms !important; animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
}

body{
  margin:0;
  background:var(--page);
  color:var(--ink);
  font-family:var(--font);
  font-size:17px;
  line-height:var(--lh-body);
  -webkit-font-smoothing:antialiased;
}

img,svg{ max-width:100%; height:auto; display:block; }

a{ color:var(--navy-700); text-decoration:none; }
a:hover{ text-decoration:underline; }

:focus-visible{
  outline:3px solid var(--amber-500);
  outline-offset:2px;
}

.shell{ width:min(var(--max),calc(100% - 48px)); margin-inline:auto; }
.prose{ max-width:var(--max-prose); }

.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
}

.skip-link{
  position:absolute; left:-9999px; top:0; z-index:200;
  background:var(--navy-900); color:var(--white);
  padding:var(--s3) var(--s5); font-weight:700;
}
.skip-link:focus{ left:0; }

/* ==========================================================================
   Type scale
   ========================================================================== */

h1,h2,h3,h4{
  color:var(--navy-900);
  font-weight:700;
  line-height:1.18;
  margin:0 0 var(--s4);
  letter-spacing:-.015em;
}
h1{ font-size:clamp(34px,5vw,54px); }
h2{ font-size:clamp(26px,3.4vw,36px); }
h3{ font-size:20px; letter-spacing:-.005em; }
h4{ font-size:17px; letter-spacing:0; }

p{ margin:0 0 var(--s4); }
p:last-child{ margin-bottom:0; }

.lead{
  font-size:clamp(18px,2vw,20px);
  color:var(--ink-soft);
  line-height:1.65;
}

/* Eyebrow: labels a section by kind. */
.eyebrow{
  display:block;
  font-size:12px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  margin:0 0 var(--s3);
}
.eyebrow--onnavy{ color:var(--on-navy-soft); }

/* Signature device: amber rule beneath a heading. */
.underbar{ position:relative; padding-bottom:var(--s4); }
.underbar::after{
  content:""; position:absolute; left:0; bottom:0;
  width:88px; height:5px; background:var(--amber-grad);
}
.underbar--center{ text-align:center; }
.underbar--center::after{ left:50%; transform:translateX(-50%); }

/* ==========================================================================
   Circuit motif — faint node/line texture for navy surfaces
   ========================================================================== */

.circuitry{ position:relative; overflow:hidden; isolation:isolate; }
.circuitry::before{
  content:""; position:absolute; inset:0; z-index:-1; opacity:.11;
  pointer-events:none;
  background-repeat:no-repeat;
  background-image:
    /* top-left: node + horizontal trace */
    radial-gradient(circle 5px at 0 0, var(--on-navy-soft) 99%, transparent 100%),
    linear-gradient(90deg, var(--on-navy-soft) 0 100%),
    /* top-right: node + vertical trace */
    radial-gradient(circle 5px at 100% 0, var(--on-navy-soft) 99%, transparent 100%),
    linear-gradient(180deg, var(--on-navy-soft) 0 100%),
    /* bottom-right: node + horizontal trace */
    radial-gradient(circle 5px at 100% 100%, var(--on-navy-soft) 99%, transparent 100%),
    linear-gradient(90deg, var(--on-navy-soft) 0 100%);
  background-size:
    10px 10px, 150px 2px,
    10px 10px, 2px 120px,
    10px 10px, 150px 2px;
  background-position:
    44px 62px,   54px 66px,
    calc(100% - 44px) 46px, calc(100% - 40px) 56px,
    calc(100% - 40px) calc(100% - 58px), calc(100% - 186px) calc(100% - 54px);
}
@media (max-width:720px){ .circuitry::before{ display:none; } }

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:var(--s2);
  padding:14px 26px;
  font-family:inherit; font-size:16px; font-weight:700;
  border:2px solid transparent; border-radius:var(--r-card);
  cursor:pointer; text-align:center;
  transition:background-color .15s ease, border-color .15s ease,
             color .15s ease, transform .15s ease, box-shadow .15s ease;
}
.btn:hover{ text-decoration:none; transform:translateY(-1px); }
.btn:active{ transform:translateY(0); }

.btn--primary{
  background:var(--amber-500); border-color:var(--amber-500); color:var(--navy-900);
}
.btn--primary:hover{ background:var(--amber-400); border-color:var(--amber-400); }

.btn--solid{
  background:var(--navy-900); border-color:var(--navy-900); color:var(--white);
}
.btn--solid:hover{ background:var(--navy-700); border-color:var(--navy-700); }

.btn--outline{
  background:transparent; border-color:var(--rule-strong); color:var(--navy-900);
}
.btn--outline:hover{ border-color:var(--navy-700); background:var(--white); }

.btn--onnavy{
  background:transparent; border-color:rgba(255,255,255,.34); color:var(--white);
}
.btn--onnavy:hover{ border-color:var(--amber-500); color:var(--amber-400); }

.btn--sm{ padding:10px 18px; font-size:14px; }
.btn[aria-disabled="true"]{ opacity:.5; pointer-events:none; }

/* Text link with arrow */
.arrow-link{
  display:inline-flex; align-items:center; gap:var(--s2);
  font-weight:700; color:var(--navy-700);
}
.arrow-link::after{ content:"→"; transition:transform .15s ease; }
.arrow-link:hover{ text-decoration:none; }
.arrow-link:hover::after{ transform:translateX(4px); }

/* ==========================================================================
   Badges — sharp bordered tags, amber pills for status
   ========================================================================== */

.tag{
  display:inline-flex; align-items:center;
  padding:4px 10px;
  font-size:11px; font-weight:700; letter-spacing:.1em; text-transform:uppercase;
  border:1.5px solid var(--rule-strong); border-radius:var(--r-sharp);
  color:var(--ink-softer); background:var(--white);
}
.tag--free{ border-color:var(--navy-700); color:var(--navy-700); }
.tag--paid{ border-color:var(--amber-500); color:var(--warn); background:#FDF6E9; }
.tag--onnavy{ border-color:rgba(255,255,255,.32); color:var(--on-navy-soft); background:transparent; }

.pill{
  display:inline-flex; align-items:center;
  padding:3px 11px;
  font-size:11px; font-weight:700; letter-spacing:.06em; text-transform:uppercase;
  border-radius:var(--r-pill);
  background:var(--amber-grad); color:var(--navy-900);
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header{
  position:sticky; top:0; z-index:100;
  background:var(--navy-900);
  border-bottom:1px solid var(--rule-navy);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  gap:var(--s5); padding:var(--s4) 0;
}

.brand{ display:flex; align-items:center; gap:var(--s3); flex-shrink:0; }
.brand:hover{ text-decoration:none; }
.brand-mark{ width:42px; height:42px; flex-shrink:0; }
.brand-name{
  color:var(--white); font-size:15px; font-weight:700;
  letter-spacing:.03em; line-height:1.2; display:block;
}
.brand-tagline{
  color:var(--on-navy-soft); font-size:11.5px; letter-spacing:.05em;
  display:block; margin-top:2px;
}

.nav{ display:flex; align-items:center; gap:var(--s1); }
.nav-link{
  padding:9px 14px;
  color:var(--on-navy-soft); font-size:15px; font-weight:500;
  border-bottom:2px solid transparent;
}
.nav-link:hover{ color:var(--white); text-decoration:none; }
.nav-link[aria-current="page"]{ color:var(--white); border-bottom-color:var(--amber-500); }
.nav-cta{ margin-left:var(--s3); }

.nav-toggle{
  display:none;
  width:44px; height:44px; padding:0;
  background:transparent; border:1.5px solid rgba(255,255,255,.3);
  border-radius:var(--r-card); cursor:pointer;
}
.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  display:block; width:20px; height:2px; background:var(--white);
  margin-inline:auto; content:""; position:relative;
}
.nav-toggle-bars::before{ top:-6px; }
.nav-toggle-bars::after{ top:4px; }

@media (max-width:900px){
  .nav-toggle{ display:block; flex-shrink:0; }
  .header-inner{ gap:var(--s3); }
  .brand{ min-width:0; }
  .brand-name{ font-size:13px; }
  .brand-tagline{ display:none; }
  .nav{
    display:none; position:absolute; left:0; right:0; top:100%;
    flex-direction:column; align-items:stretch; gap:0;
    background:var(--navy-800);
    border-bottom:3px solid var(--amber-500);
    padding:var(--s3);
  }
  .nav.is-open{ display:flex; }
  .nav-link{ padding:14px; border-bottom:1px solid var(--rule-navy); }
  .nav-link[aria-current="page"]{ border-bottom-color:var(--amber-500); }
  .nav-cta{ margin:var(--s3) 0 0; }
  .site-header{ position:relative; }
}

@media (max-width:430px){
  /* Below this width the full wordmark cannot fit beside the toggle. */
  .brand-name{ font-size:0; }
  .brand-name::after{
    content:"IMA ACADEMY"; font-size:13px; letter-spacing:.06em;
  }
}

/* ==========================================================================
   Sections
   ========================================================================== */

.section{ padding:var(--s9) 0; }
.section--tight{ padding:var(--s8) 0; }
.section--navy{ background:var(--navy-900); color:var(--on-navy-soft); }
.section--navy h2,
.section--navy h3{ color:var(--white); }
.section--panel{ background:var(--panel); }

.section-head{ max-width:var(--max-prose); margin-bottom:var(--s7); }
.section-head--center{ margin-inline:auto; text-align:center; }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero{
  background:linear-gradient(150deg,var(--navy-900) 0%,var(--navy-800) 55%,var(--navy-700) 100%);
  color:var(--on-navy-soft);
  padding:var(--s9) 0;
}
.hero h1,.hero h2,.hero h3,.hero h4{ color:var(--white); }
.hero h1{ max-width:16ch; }
.hero .lead{ color:var(--on-navy-soft); max-width:56ch; }
.hero-actions{ display:flex; flex-wrap:wrap; gap:var(--s3); margin-top:var(--s6); }

.hero-grid{
  display:grid; grid-template-columns:1.35fr .65fr; gap:var(--s8); align-items:center;
}
@media (max-width:860px){ .hero-grid{ grid-template-columns:1fr; gap:var(--s6); } }

/* Book panel inside hero */
.book-panel{
  background:rgba(255,255,255,.05);
  border:1px solid var(--rule-navy);
  border-left:4px solid var(--amber-500);
  padding:var(--s5);
}
.book-panel h3{ font-size:17px; margin-bottom:var(--s2); color:var(--white); }
.book-panel p{ font-size:14.5px; color:var(--on-navy-soft); margin-bottom:var(--s4); }

/* ==========================================================================
   Cards
   ========================================================================== */

.grid{ display:grid; gap:var(--s5); }
.grid--3{ grid-template-columns:repeat(auto-fit,minmax(300px,1fr)); }
.grid--2{ grid-template-columns:repeat(auto-fit,minmax(360px,1fr)); }

.card{
  display:flex; flex-direction:column;
  background:var(--white);
  border:1px solid var(--rule);
  border-radius:var(--r-card);
  padding:var(--s5);
  box-shadow:var(--shadow-card);
  transition:box-shadow .18s ease, transform .18s ease, border-color .18s ease;
}
.card--link:hover{
  box-shadow:var(--shadow-lift); transform:translateY(-2px); border-color:var(--rule-strong);
}
.card-top{
  display:flex; align-items:flex-start; justify-content:space-between;
  gap:var(--s3); margin-bottom:var(--s3);
}
.card h3{ margin-bottom:var(--s2); }
.card p{ font-size:15.5px; color:var(--ink-soft); }
.card-foot{ margin-top:auto; padding-top:var(--s4); }

/* Lab card: amber edge marks paid, navy edge marks free */
.card--lab{ border-top:4px solid var(--navy-700); }
.card--lab-paid{ border-top-color:var(--amber-500); }

.card-meta{
  display:flex; flex-wrap:wrap; gap:var(--s3);
  font-size:13px; color:var(--muted);
  margin-top:var(--s3);
}
.card-meta span{ display:inline-flex; align-items:center; gap:6px; }

/* ==========================================================================
   Progress
   ========================================================================== */

.progress{
  height:6px; background:var(--rule); border-radius:var(--r-pill);
  overflow:hidden; margin-top:var(--s3);
}
.progress-bar{
  height:100%; background:var(--amber-grad); border-radius:var(--r-pill);
  transition:width .4s ease;
}
.progress-label{
  display:flex; justify-content:space-between;
  font-size:12.5px; color:var(--muted); margin-top:6px;
}

/* ==========================================================================
   Locked state
   ========================================================================== */

.locked{ position:relative; }
.locked .card-body{ opacity:.55; }
.lock-note{
  display:flex; align-items:center; gap:var(--s2);
  margin-top:var(--s4); padding:var(--s3);
  background:#FDF6E9; border:1px solid #F0DDB8; border-radius:var(--r-card);
  font-size:13.5px; font-weight:700; color:var(--warn);
}

/* ==========================================================================
   Steps — for sequences where order is real information
   ========================================================================== */

.steps{ list-style:none; margin:0; padding:0; counter-reset:step; }
.steps li{
  counter-increment:step;
  display:grid; grid-template-columns:44px 1fr; gap:var(--s4);
  padding:var(--s5) 0; border-bottom:1px solid var(--rule);
}
.steps li:last-child{ border-bottom:0; }
.steps li::before{
  content:counter(step,decimal-leading-zero);
  font-size:15px; font-weight:700; color:var(--amber-500);
  border:1.5px solid var(--amber-500); border-radius:var(--r-sharp);
  width:36px; height:36px; display:flex; align-items:center; justify-content:center;
}
.section--navy .steps li{ border-bottom-color:var(--rule-navy); }

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer{
  background:var(--navy-900); color:var(--on-navy-soft);
  padding:var(--s8) 0 var(--s6);
  border-top:4px solid var(--amber-500);
}
.footer-grid{
  display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:var(--s6);
  padding-bottom:var(--s6); border-bottom:1px solid var(--rule-navy);
}
@media (max-width:820px){ .footer-grid{ grid-template-columns:1fr 1fr; gap:var(--s5); } }
@media (max-width:520px){ .footer-grid{ grid-template-columns:1fr; } }

.footer-brand{ display:flex; align-items:center; gap:var(--s3); margin-bottom:var(--s3); }
.footer-brand svg{ width:38px; height:38px; }
.footer-about{ font-size:14px; color:var(--muted); max-width:38ch; }

.footer-col h4{ color:var(--white); font-size:12px; letter-spacing:.14em;
  text-transform:uppercase; margin-bottom:var(--s3); }
.footer-col a{
  display:block; color:var(--on-navy-soft); font-size:14.5px; padding:5px 0;
}
.footer-col a:hover{ color:var(--amber-400); text-decoration:none; }

.footer-base{
  display:flex; flex-wrap:wrap; justify-content:space-between; gap:var(--s3);
  padding-top:var(--s5); font-size:13px; color:var(--muted);
}
.footer-base a{ color:var(--muted); }
.footer-base a:hover{ color:var(--on-navy-soft); }

/* ==========================================================================
   Utilities
   ========================================================================== */

.stack > * + *{ margin-top:var(--s4); }
.row{ display:flex; flex-wrap:wrap; gap:var(--s3); align-items:center; }
.mt-6{ margin-top:var(--s6); }
.mt-7{ margin-top:var(--s7); }
.text-center{ text-align:center; }

.notice{
  background:var(--panel); border:1px solid var(--rule);
  border-left:4px solid var(--navy-700);
  padding:var(--s5); border-radius:var(--r-card);
  font-size:15px; color:var(--ink-soft);
}
.notice h4{ margin-bottom:var(--s2); }

@media print{
  .site-header,.site-footer,.hero-actions,.nav-toggle{ display:none !important; }
  body{ background:#fff; }
  .card{ box-shadow:none; border:1px solid #999; break-inside:avoid; }
}