/* =====================================================================
   ExamForge — theme: dark green, light blue, white
   ===================================================================== */
:root{
  --green:#0f5132;       /* dark green (primary) */
  --green-dk:#0a3a24;
  --green-lt:#157347;
  --blue:#9bd1e5;        /* light blue (accent) */
  --blue-dk:#3a93b8;
  --blue-bg:#eaf6fb;
  --white:#ffffff;
  --ink:#22302b;
  --muted:#6c7a74;
  --line:#e2ece8;
  --bg:#f1f7f5;
  --danger:#c0392b;
  --ok:#157347;
  --warn:#b8860b;
  --shadow:0 4px 18px rgba(15,81,50,.10);
  --radius:12px;
}
*{box-sizing:border-box}
body{margin:0;font-family:'Segoe UI',Roboto,Helvetica,Arial,sans-serif;color:var(--ink);
     background:var(--bg);line-height:1.55;}
a{color:var(--blue-dk);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{color:var(--green);margin:.2em 0 .5em}
img{max-width:100%}

/* ---------------- layout ---------------- */
.container{max-width:1100px;margin:0 auto;padding:0 18px}
.main{padding:26px 0 60px;min-height:60vh}
/* full-width hero pages: collapse the leading (empty) main above the hero */
.main-bare{padding:0;min-height:0}

/* ---------------- top bar ---------------- */
.topbar{background:var(--green);color:#fff;box-shadow:var(--shadow);position:sticky;top:0;z-index:50}
.topbar .container{display:flex;align-items:center;gap:18px;height:60px}
.brand{font-size:21px;font-weight:700;color:#fff;letter-spacing:.4px;display:flex;align-items:center;gap:8px}
.brand span{color:var(--blue)}
.brand:hover{text-decoration:none}
.nav{display:flex;gap:6px;margin-left:auto;align-items:center;flex-wrap:nowrap}
.nav a{color:#dff1ea;padding:8px 12px;border-radius:8px;font-size:14px}
.nav a:hover{background:rgba(255,255,255,.12);text-decoration:none}
.nav a.active{background:var(--green-dk);color:#fff}
.nav .pill{background:var(--blue);color:var(--green-dk);font-weight:700}
.nav .pill:hover{background:#bfe4f2}
.wallet-chip{background:var(--green-dk);color:var(--blue);padding:6px 12px;border-radius:20px;
             font-weight:700;font-size:13px}
a.wallet-chip:hover{text-decoration:none;background:#0c2e1d}
.nav-wallet{margin-left:auto}
/* hamburger (CSS-only toggle) — hidden on desktop */
.nav-toggle{display:none}
.nav-burger{display:none;cursor:pointer;width:42px;height:38px;border-radius:8px;
            margin-left:auto;align-items:center;justify-content:center}
.nav-burger:hover{background:rgba(255,255,255,.12)}
.nav-burger span,.nav-burger span::before,.nav-burger span::after{content:"";display:block;
            width:22px;height:2px;background:#fff;border-radius:2px;position:relative;transition:.2s}
.nav-burger span::before{position:absolute;top:-7px}
.nav-burger span::after{position:absolute;top:7px}

@media(max-width:880px){
  .nav-wallet{margin-left:auto}            /* sit next to the burger */
  .nav-burger{display:flex}
  /* slide-down menu panel */
  .nav{position:absolute;top:60px;left:0;right:0;margin:0;background:var(--green-dk);
       flex-direction:column;align-items:stretch;gap:0;padding:6px 10px 12px;
       box-shadow:0 12px 24px rgba(0,0,0,.25);display:none}
  .nav-toggle:checked ~ .nav{display:flex}
  .nav a{padding:12px 10px;border-radius:8px;font-size:15px}
  .nav .pill{text-align:center;margin-top:6px}
  /* burger turns into an X when open */
  .nav-toggle:checked ~ .nav-burger span{background:transparent}
  .nav-toggle:checked ~ .nav-burger span::before{top:0;transform:rotate(45deg)}
  .nav-toggle:checked ~ .nav-burger span::after{top:0;transform:rotate(-45deg)}
}

/* ---------------- cards / panels ---------------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
      box-shadow:var(--shadow);padding:22px;margin-bottom:20px}
.card h2{margin-top:0}
.grid{display:grid;gap:18px}
.grid.cols-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid.cols-3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}

/* ---------------- buttons ---------------- */
.btn{display:inline-block;background:var(--green);color:#fff;border:none;border-radius:8px;
     padding:11px 20px;font-size:14px;font-weight:600;cursor:pointer;transition:.15s}
.btn:hover{background:var(--green-lt);text-decoration:none}
.btn.blue{background:var(--blue-dk)}
.btn.blue:hover{background:#2f7e9f}
.btn.outline{background:transparent;color:var(--green);border:1.5px solid var(--green)}
.btn.outline:hover{background:var(--green);color:#fff}
.btn.ghost{background:var(--blue-bg);color:var(--green-dk)}
.btn.danger{background:var(--danger)}
.btn.sm{padding:6px 12px;font-size:13px}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* ---------------- forms ---------------- */
label{display:block;font-weight:600;font-size:13px;margin:12px 0 5px;color:var(--green-dk)}
input,select,textarea{width:100%;padding:11px 12px;border:1.5px solid var(--line);border-radius:8px;
     font-size:14px;font-family:inherit;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue-dk);
     box-shadow:0 0 0 3px var(--blue-bg)}
.form-narrow{max-width:420px;margin:0 auto}

/* ---------------- alerts ---------------- */
.alert{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:14px;border-left:4px solid}
.alert.ok{background:#e8f5ee;border-color:var(--ok);color:#0d5132}
.alert.err{background:#fdecea;border-color:var(--danger);color:#922}
.alert.info{background:var(--blue-bg);border-color:var(--blue-dk);color:#23596e}

/* ---------------- tables ---------------- */
.table{width:100%;border-collapse:collapse;font-size:14px;background:#fff}
.table th,.table td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left}
.table th{background:var(--green);color:#fff;font-weight:600;font-size:13px}
.table tr:hover td{background:#f5fbf8}
.table .num{text-align:right}

/* ---------------- badges ---------------- */
.badge{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;font-weight:600}
.badge.green{background:#e0f0e8;color:var(--green)}
.badge.blue{background:var(--blue-bg);color:var(--blue-dk)}
.badge.gray{background:#eef1f0;color:var(--muted)}
.badge.red{background:#fdecea;color:var(--danger)}

/* ---------------- pager ---------------- */
.pager{display:flex;align-items:center;gap:14px;justify-content:center;margin-top:18px}
.pager .pg{padding:7px 14px;border:1px solid var(--line);border-radius:8px;background:#fff}
.pager .pg.disabled{opacity:.45;pointer-events:none}
.pager .pg-info{color:var(--muted);font-size:13px}

/* ---------------- hero (landing) ---------------- */
.hero{position:relative;color:#fff;padding:84px 0;text-align:center;overflow:hidden;
      background:linear-gradient(135deg,var(--green) 0%,var(--green-dk) 100%)}
.hero::before{content:"";position:absolute;inset:0;
      background:url('../images/hero-bg.svg') center/cover no-repeat;opacity:.55}
.hero::after{content:"";position:absolute;inset:0;
      background:linear-gradient(180deg,rgba(10,58,36,.30),rgba(10,58,36,.78))}
.hero .container{position:relative;z-index:2}
.hero h1{color:#fff;font-size:42px;margin:0 0 12px;text-shadow:0 2px 12px rgba(0,0,0,.25)}
.hero h1 span{color:var(--blue)}
.hero p{font-size:18px;color:#eaf6fb;max-width:640px;margin:0 auto 26px}

/* section heading */
.section-head{text-align:center;margin:46px 0 22px}
.section-head h2{margin:0}
.section-head p{color:var(--muted);margin:6px 0 0}

/* features — balanced 3-up grid (3+3 for six cards) */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:820px){.features{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.features{grid-template-columns:1fr}}
.feature{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);text-align:left;
      border-top:3px solid var(--blue)}
.feature .ic{font-size:28px}
.feature h3{margin:8px 0 6px}

/* use cases */
.usecases{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:900px){.usecases{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.usecases{grid-template-columns:1fr}}
.usecase{background:linear-gradient(160deg,#fff,var(--blue-bg));border:1px solid var(--line);
      border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.usecase .ic{width:46px;height:46px;border-radius:12px;background:var(--green);color:#fff;
      display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:10px}
.usecase h3{margin:0 0 6px;font-size:17px}
.usecase p{margin:0;color:var(--muted);font-size:14px}
.cta-band{background:var(--blue-bg);border:1px solid var(--line);border-radius:var(--radius);
      text-align:center;padding:30px;margin-top:40px}

/* ---------------- subject / dashboard cards ---------------- */
.subj{display:flex;flex-direction:column;gap:8px}
.subj .code{font-size:12px;color:var(--blue-dk);font-weight:700;letter-spacing:1px}
.subj .meta{color:var(--muted);font-size:13px}
.stat{display:flex;flex-direction:column;align-items:center;justify-content:center;
      background:linear-gradient(135deg,var(--green),var(--green-lt));color:#fff;border-radius:var(--radius);padding:18px}
.stat .n{font-size:30px;font-weight:800}
.stat .l{font-size:13px;color:var(--blue)}

/* ---------------- exam builder ---------------- */
.builder{display:grid;grid-template-columns:1fr 360px;gap:20px;align-items:start}
@media(max-width:880px){.builder{grid-template-columns:1fr}
  .builder #bank{max-height:none}}
/* The question bank is the long list — scroll it INSIDE its card so the page
   stays short and the cover form/buttons on the right are always reachable. */
.builder #bank{max-height:calc(100vh - 230px);overflow-y:auto;padding-right:4px}
.qrow{display:flex;gap:12px;align-items:flex-start;padding:12px;border:1px solid var(--line);
      border-radius:10px;margin-bottom:10px;background:#fff}
.qrow .sum{flex:1}
.qrow .mk{color:var(--green-dk);font-weight:700;white-space:nowrap}
.selected-list .qrow{cursor:grab;border-left:4px solid var(--blue-dk)}
.selected-list .qrow.dragging{opacity:.4}
.handle{color:var(--muted);cursor:grab;font-size:18px;user-select:none}
/* The cover/preview panel flows with the page so its full height — including the
   Preview/Save buttons — is always reachable by scrolling. (It is not sticky:
   sticky + a tall column pinned the buttons off-screen.) */
.summary-bar{position:static}
/* Selected questions scroll inside their own card so a long list never pushes the
   cover form and buttons out of reach. */
.selected-list{max-height:300px;overflow-y:auto;padding-right:4px}

/* ---------------- cover preview ---------------- */
.cover{background:#fff;border:1px solid var(--line);padding:40px;max-width:760px;margin:0 auto;
       box-shadow:var(--shadow);font-family:'Times New Roman',Georgia,serif;font-size:14pt}
.cover .logo-wrap{display:flex;margin-bottom:14px}
.cover .logo-wrap.center{justify-content:center}
.cover .logo-wrap.left{justify-content:flex-start}
.cover .logo-wrap.right{justify-content:flex-end}
.cover .logo-wrap img{max-height:90px}
.cover .inst{text-align:center;font-size:20pt;font-weight:bold}
.cover .doctype{text-align:center;font-size:17pt;margin:6px 0 18px;letter-spacing:2px;text-transform:uppercase}
.cover .fields{width:100%;border-collapse:collapse;margin:18px 0}
.cover .fields td{border:1px solid #333;padding:10px 12px;font-size:14pt}
.cover .instr{border:1px solid #333;padding:14px;margin-top:14px;font-size:14pt}
.cover .instr h4{margin:0 0 8px;color:#000}

/* exam render — seamless white sheet (screenshots are white, so no frame/borders) */
.exam-sheet{background:#fff;padding:24px}
/* question number in a left gutter; screenshots to its right */
.exam-q{display:flex;gap:10px;margin-bottom:22px;align-items:flex-start}
/* number dropped down (padding-top) to sit on the question's first text line, and
   sized to ~14pt so it blends with the screenshot text */
.exam-q .qnum{flex:0 0 26px;font-weight:bold;font-size:14pt;text-align:right;padding-top:10px}
.exam-q .qbody{flex:1;min-width:0}
/* Right-align each screenshot so narrow sub-part crops line up at the right
   margin (mirroring the original paper) instead of floating left with a gap.
   block + margin-left:auto stacks them flush and pushes them right. */
.exam-q .qbody img{display:block;margin-left:auto;max-width:100%}

/* ---------------- footer ---------------- */
.footer{background:var(--green-dk);color:#bcd9cd;padding:26px 0;font-size:13px;margin-top:40px}
.footer a{color:var(--blue)}

/* ---------------- preview watermark ---------------- */
.preview-wrap{position:relative}
.preview-watermark{position:absolute;inset:0;z-index:20;pointer-events:none;overflow:hidden;
  display:flex;flex-wrap:wrap;gap:46px 60px;transform:rotate(-30deg) scale(1.4);
  transform-origin:center;opacity:.16;user-select:none}
.preview-watermark span{color:var(--green);font-weight:800;font-size:18px;white-space:nowrap;
  letter-spacing:1px}

/* ---------------- print ---------------- */
@media print{
  .topbar,.footer,.no-print{display:none!important}
  /* Never print an unsaved preview, even via the browser's own print shortcut. */
  .preview-wrap{display:none!important}
  body{background:#fff}
  .cover{box-shadow:none;border:none;margin:0}
  .page-break{page-break-after:always}
}