/* Course members area. Dark theme matching the funnel (black / white / green). */
:root {
  --navy: #0a0b0d;
  --navy-2: #15171b;
  --navy-3: #1c1f24;
  --blue: #188C6B;
  --blue-2: #1fa37e;
  --blue-soft: rgba(24, 140, 107, .14);
  --gold: #F5A623;
  --gold-2: #F8BD55;
  --gold-soft: rgba(245, 166, 35, .12);
  --green: #1fa37e;
  --green-hover: #127256;
  --green-soft: rgba(34, 197, 94, .1);
  --red: #ef4444;
  --ink: #ffffff;
  --ink-2: #c3c7cd;
  --muted: #7d828a;
  --line: rgba(255, 255, 255, .08);
  --bg: #0a0b0d;
  --bg-2: #101215;
  --card: #15171b;
  --radius: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, .35);
  --bm-h: 0px;
  --font: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: #4fd1a5; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -0.025em; font-weight: 800; }
.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 20px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5em; font: 700 1rem/1 var(--font); padding: 1rem 1.7rem; border-radius: 12px; border: 0; cursor: pointer; text-decoration: none; transition: transform .2s, box-shadow .2s, background .2s; }
.btn:hover { transform: translateY(-2px); }
.btn-gold { background: var(--blue); color: #fff; box-shadow: 0 4px 24px rgba(24, 140, 107, .3); }
.btn-gold:hover { background: var(--blue-2); box-shadow: 0 8px 36px rgba(24, 140, 107, .45); }
.btn-blue { background: rgba(255, 255, 255, .08); color: #fff; border: 1px solid rgba(255, 255, 255, .12); }
.btn-blue:hover { background: rgba(255, 255, 255, .13); }
.btn-ghost { background: transparent; color: var(--ink) !important; border: 1px solid rgba(255, 255, 255, .16); }
.btn-ghost:hover { background: rgba(255, 255, 255, .05); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }
.pill { display: inline-flex; align-items: center; gap: .45em; font-size: .76rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; padding: .4rem .8rem; border-radius: 999px; background: rgba(24, 140, 107, .16); color: #4fd1a5; border: 1px solid rgba(31, 163, 126, .3); }
.logo { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; font-size: 1.05rem; text-decoration: none; white-space: nowrap; }
.logo-mark { width: 34px; height: 34px; border-radius: 10px; flex: 0 0 34px; box-shadow: 0 4px 18px rgba(24, 140, 107, .4);
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='22 7 13.5 15.5 8.5 10.5 2 17'/%3E%3Cpolyline points='16 7 22 7 22 13'/%3E%3C/svg%3E") center / 20px no-repeat, linear-gradient(135deg, #1fa37e, #127256); }

/* ═════════════════════════ COURSE APP ═════════════════════════ */
.app-top {
  position: sticky; top: 0; z-index: 30;
  background: var(--navy); color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}
/* Bookmark nudge: rides above the header inside the same sticky block, so the
   sidebar offsets below follow --bm-h rather than a hard-coded header height. */
.bookmark-bar {
  background: linear-gradient(90deg, rgba(245, 166, 35, .16), rgba(245, 166, 35, .06));
  border-bottom: 1px solid rgba(245, 166, 35, .22);
}
.bm-inner { display: flex; align-items: center; gap: 12px; padding: 9px 20px; }
.bm-star { color: var(--gold-2); font-size: 1rem; line-height: 1; flex: 0 0 auto; }
.bm-copy { margin: 0; font-size: .86rem; line-height: 1.45; color: var(--ink-2); }
.bm-copy strong { color: var(--gold-2); }
.bm-tip { color: var(--muted); }
.bm-tip kbd {
  font: 700 .78rem var(--font); background: rgba(255, 255, 255, .1); color: var(--ink);
  border: 1px solid rgba(255, 255, 255, .16); border-bottom-width: 2px;
  border-radius: 6px; padding: 1px 6px; margin: 0 1px;
}
.bm-close {
  margin-left: auto; flex: 0 0 auto; background: transparent; border: 1px solid rgba(245, 166, 35, .35);
  color: var(--gold-2); font: 700 .78rem var(--font); padding: 6px 14px; border-radius: 999px;
  cursor: pointer; transition: background .2s;
}
.bm-close:hover { background: rgba(245, 166, 35, .14); }

.app-top .bar { display: flex; align-items: center; gap: 20px; padding: 12px 20px; }
.app-top .logo { font-size: 1rem; }
.hud { margin-left: auto; display: flex; align-items: center; gap: 18px; }
.hud-item { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: .9rem; white-space: nowrap; }
.hud-item .ico {
  width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; font-size: .85rem;
  background: rgba(255, 255, 255, .08);
}
.hud-item .ico.gold { background: rgba(245, 166, 35, .18); color: var(--gold-2); }
.hud-item .ico.fire { background: rgba(249, 115, 22, .18); color: #fb923c; }
.level-box { min-width: 190px; }
.level-box .lv { display: flex; justify-content: space-between; font-size: .78rem; color: rgba(255, 255, 255, .25); margin-bottom: 4px; }
.level-box .lv strong { color: #fff; }
.xpbar { height: 8px; border-radius: 999px; background: rgba(255, 255, 255, .1); overflow: hidden; }
.xpbar > i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--gold), var(--gold-2)); border-radius: inherit; transition: width .6s cubic-bezier(.2, .8, .2, 1); }
.logout-btn { background: transparent; border: 1px solid rgba(255, 255, 255, .14); color: var(--ink-2); font: 600 .82rem var(--font); padding: 8px 14px; border-radius: 10px; cursor: pointer; white-space: nowrap; transition: background .2s, color .2s; }
.logout-btn:hover { background: rgba(255, 255, 255, .06); color: #fff; }
.menu-btn { display: none; background: none; border: 0; color: #fff; font-size: 1.4rem; cursor: pointer; }

.app { display: grid; grid-template-columns: 330px 1fr; min-height: calc(100vh - 60px - var(--bm-h)); }
.sidebar { background: var(--card); border-right: 1px solid var(--line); padding: 20px 14px 40px; overflow-y: auto; position: sticky; top: calc(60px + var(--bm-h)); height: calc(100vh - 60px - var(--bm-h)); }
.progress-summary { padding: 6px 8px 18px; border-bottom: 1px solid var(--line); margin-bottom: 12px; }
.progress-summary .row { display: flex; justify-content: space-between; font-size: .85rem; font-weight: 700; margin-bottom: 8px; }
.progress-summary .bar { height: 8px; background: var(--blue-soft); border-radius: 999px; overflow: hidden; }
.progress-summary .bar i { display: block; height: 100%; background: var(--blue); border-radius: inherit; transition: width .5s; }

.side-mod { margin-bottom: 6px; }
.side-mod-head {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  padding: 10px 8px; border-radius: 10px; display: flex; gap: 12px; align-items: center; font: inherit; color: inherit;
}
.side-mod-head:hover { background: var(--bg); }
.side-mod-num {
  flex: 0 0 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
  font-weight: 800; font-size: .9rem; background: var(--blue-soft); color: var(--blue);
}
.side-mod.done .side-mod-num { background: var(--green); color: #fff; }
.side-mod.locked .side-mod-num { background: rgba(255, 255, 255, .06); color: #94a3b8; }
.side-mod-title { font-weight: 700; font-size: .92rem; line-height: 1.3; }
.side-mod-sub { font-size: .76rem; color: var(--muted); }
.side-lessons { list-style: none; padding: 0 0 6px 20px; margin: 0; display: none; }
.side-mod.open .side-lessons { display: block; }
.side-lessons button {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer; font: inherit; color: var(--ink-2);
  padding: 8px 10px; border-radius: 8px; display: flex; gap: 10px; align-items: flex-start; font-size: .87rem; line-height: 1.35;
}
.side-lessons button:hover:not([disabled]) { background: var(--bg); }
.side-lessons button.active { background: var(--blue-soft); color: var(--blue); font-weight: 700; }
.side-lessons button[disabled] { color: #94a3b8; cursor: not-allowed; }
.dot { flex: 0 0 18px; height: 18px; border-radius: 50%; border: 2px solid rgba(255, 255, 255, .25); margin-top: 1px; display: grid; place-items: center; font-size: .6rem; color: #fff; }
.dot.done { background: var(--green); border-color: var(--green); }
.dot.lock { border: 0; color: #94a3b8; font-size: .75rem; }

.side-promo { margin: 18px 6px 0; padding: 16px; border-radius: 14px; background: linear-gradient(135deg, var(--navy-2), var(--navy)); color: #fff; }
.side-promo h4 { font-size: .95rem; margin-bottom: 6px; }
.side-promo p { font-size: .82rem; color: rgba(255, 255, 255, .25); margin: 0 0 12px; }
.side-promo .btn { padding: .7rem 1rem; font-size: .85rem; }

.main { padding: 32px 40px 80px; max-width: 1000px; width: 100%; }
.crumbs { font-size: .82rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 8px; }
.lesson-title { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; }
.lesson-sub { color: var(--muted); font-size: 1.08rem; margin: 0 0 22px; }
.meta-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; }

.player { position: relative; aspect-ratio: 16/9; border-radius: 18px; overflow: hidden; background: #000; box-shadow: var(--shadow); }
.player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.alt-video { margin: 12px 0 0; font-size: .92rem; }
.alt-video a { font-weight: 700; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; margin-top: 22px; box-shadow: var(--shadow); }
.card-h { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.card-h h2 { font-size: 1.2rem; margin: 0; }
.card-h .xp-tag { margin-left: auto; font-size: .78rem; font-weight: 800; color: var(--gold-2); background: var(--gold-soft); padding: .3rem .6rem; border-radius: 999px; }
.card-h .xp-tag.earned { color: var(--green); background: var(--green-soft); }
.step-n { width: 30px; height: 30px; border-radius: 9px; background: var(--navy); color: #fff; display: grid; place-items: center; font-weight: 800; font-size: .85rem; }

.writeup { font-size: 1.04rem; color: var(--ink-2); }
.writeup h3 { font-size: 1.15rem; color: var(--ink); margin: 1.5em 0 .5em; }
.writeup ul, .writeup ol { padding-left: 1.3em; }
.writeup li { margin-bottom: .4em; }
.writeup .callout { background: var(--blue-soft); border-left: 4px solid var(--blue); padding: 14px 18px; border-radius: 0 12px 12px 0; margin: 1.2em 0; color: var(--ink); }
.writeup .example { background: var(--gold-soft); border: 1px dashed rgba(245, 166, 35, .4); padding: 14px 18px; border-radius: 12px; margin: 1.2em 0; }
.writeup .example p { margin: .3em 0; }
.writeup .muted { color: var(--muted); font-size: .85rem; }
.writeup table.terms { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: .98rem; }
.writeup table.terms td { border-bottom: 1px solid var(--line); padding: 10px 12px 10px 0; vertical-align: top; }
.writeup table.terms td:first-child { width: 34%; color: var(--ink); }
.writeup .wheel { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin: 1.2em 0; }
.writeup .wheel div { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 12px; font-size: .88rem; line-height: 1.4; }
.writeup .wheel span { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 800; font-size: .8rem; margin-bottom: 8px; }

.takeaways { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.takeaways li { display: flex; gap: 12px; align-items: flex-start; }
.takeaways li::before { content: "★"; color: var(--gold); font-size: 1rem; line-height: 1.6; }

.actions { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.actions label {
  display: flex; gap: 14px; align-items: center; cursor: pointer; padding: 14px 16px;
  border: 1.5px solid var(--line); border-radius: 12px; transition: border-color .15s, background .15s; font-weight: 600;
}
.actions label:hover { border-color: var(--blue-2); }
.actions input { width: 20px; height: 20px; accent-color: var(--green); flex: 0 0 20px; }
.actions label.checked { background: var(--green-soft); border-color: rgba(34, 197, 94, .4); }
.actions label.checked span { text-decoration: line-through; color: var(--muted); }

.quiz-q { font-weight: 700; font-size: 1.08rem; margin: 0 0 14px; }
.quiz-opts { display: grid; gap: 10px; }
.quiz-opt {
  text-align: left; font: 600 1rem var(--font); padding: 14px 16px; border-radius: 12px; cursor: pointer;
  border: 1.5px solid var(--line); background: var(--card); color: var(--ink); display: flex; gap: 12px; align-items: center;
  transition: border-color .15s, background .15s;
}
.quiz-opt:hover:not([disabled]) { border-color: var(--blue-2); background: rgba(24, 140, 107, .06); }
.quiz-opt .letter { flex: 0 0 28px; height: 28px; border-radius: 8px; background: var(--bg); display: grid; place-items: center; font-weight: 800; font-size: .85rem; color: var(--muted); }
.quiz-opt.correct { border-color: var(--green); background: var(--green-soft); }
.quiz-opt.correct .letter { background: var(--green); color: #fff; }
.quiz-opt.wrong { border-color: #fca5a5; background: rgba(239, 68, 68, .1); }
.quiz-opt.wrong .letter { background: var(--red); color: #fff; }
.quiz-opt[disabled] { cursor: default; }
.quiz-feedback { margin-top: 14px; padding: 14px 16px; border-radius: 12px; font-size: .98rem; display: none; }
.quiz-feedback.show { display: block; }
.quiz-feedback.good { background: var(--green-soft); color: rgba(34, 197, 94, .4); }
.quiz-feedback.bad { background: rgba(239, 68, 68, .1); color: #fca5a5; }
.quiz-retry { margin-top: 10px; background: none; border: 0; color: var(--blue); font: 700 .95rem var(--font); cursor: pointer; padding: 0; }

.complete-row { display: flex; gap: 14px; align-items: center; justify-content: space-between; flex-wrap: wrap; margin-top: 26px; }
.complete-row .hint { color: var(--muted); font-size: .92rem; }

/* Toolkit */
.tools { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.tool { display: grid; grid-template-columns: 44px 1fr; gap: 6px 14px; padding: 18px; border-radius: 14px; background: var(--bg-2); border: 1px solid var(--line); text-decoration: none; color: var(--ink); transition: border-color .2s, transform .2s; }
.tool:hover { border-color: rgba(31, 163, 126, .5); transform: translateY(-2px); }
.tool-ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; font-size: 1.3rem; background: rgba(24, 140, 107, .14); grid-row: span 2; }
.tool-body strong { display: block; font-size: 1rem; margin-bottom: 4px; }
.tool-body span { display: block; color: var(--muted); font-size: .88rem; line-height: 1.5; }
.tool-cta { grid-column: 2; color: #4fd1a5; font-weight: 700; font-size: .88rem; }
.calc-note { color: var(--muted); font-size: .8rem; line-height: 1.55; margin: 14px 0 0; }

/* Upsells */
.ark-tip {
  margin-top: 22px; border-radius: var(--radius); padding: 20px 22px; display: flex; gap: 16px; align-items: flex-start;
  background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow);
}
.ark-tip .ico { flex: 0 0 42px; height: 42px; border-radius: 12px; background: var(--navy); color: var(--gold-2); display: grid; place-items: center; font-weight: 800; }
.ark-tip h4 { margin: 0 0 4px; font-size: .98rem; }
.ark-tip p { margin: 0 0 8px; color: var(--ink-2); font-size: .94rem; }
.ark-tip a { font-weight: 700; font-size: .92rem; text-decoration: none; }
.code { font-family: ui-monospace, Menlo, monospace; background: var(--gold-soft); color: var(--gold-2); padding: .15rem .45rem; border-radius: 6px; font-weight: 700; border: 1px dashed rgba(245, 166, 35, .4); cursor: pointer; }

.workshop-cta {
  margin-top: 26px; border-radius: 20px; padding: 30px; color: #fff; position: relative; overflow: hidden;
  background: radial-gradient(500px 240px at 100% 0%, rgba(24, 140, 107, .45), transparent 60%), linear-gradient(135deg, var(--navy-2), var(--navy));
  display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center;
}
.workshop-cta .pill { margin-bottom: 10px; }
.workshop-cta h3 { font-size: 1.35rem; margin-bottom: 6px; }
.workshop-cta p { color: rgba(255, 255, 255, .25); margin: 0; }
.workshop-cta ul { list-style: none; padding: 0; margin: 12px 0 0; display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: .88rem; color: rgba(255, 255, 255, .12); }
.workshop-cta ul li::before { content: "✓ "; color: #4ade80; font-weight: 800; }

/* Dashboard */
.dash-hero {
  border-radius: 20px; padding: 32px; color: #fff; margin-bottom: 24px;
  background: radial-gradient(600px 300px at 100% 0%, rgba(24, 140, 107, .4), transparent 60%), linear-gradient(135deg, var(--navy-2), var(--navy));
}
.dash-hero h1 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.dash-hero p { color: rgba(255, 255, 255, .25); margin: 0 0 20px; max-width: 620px; }
.dash-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 8px; }
.dash-stat { background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .08); border-radius: 14px; padding: 14px 16px; }
.dash-stat strong { display: block; font-size: 1.5rem; font-weight: 800; }
.dash-stat span { font-size: .8rem; color: #94a3b8; }

.badges { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.badge { text-align: center; padding: 16px 8px; border-radius: 14px; border: 1px solid var(--line); background: var(--card); }
.medal {
  width: 58px; height: 58px; margin: 0 auto 10px; border-radius: 50%; display: grid; place-items: center;
  font-weight: 800; font-size: 1.2rem; color: #6b7078; background: rgba(255, 255, 255, .05); border: 3px solid rgba(255, 255, 255, .1); position: relative;
}
.badge.earned .medal { color: var(--navy); background: radial-gradient(circle at 30% 30%, #fff2c7, var(--gold)); border-color: #e0a526; box-shadow: 0 6px 18px rgba(245, 166, 35, .45); }
.badge .bn { font-size: .8rem; font-weight: 800; line-height: 1.2; }
.badge .bs { font-size: .72rem; color: var(--muted); }

.dash-mods { display: grid; gap: 14px; }
.dash-mod { display: grid; grid-template-columns: 160px 1fr auto; gap: 20px; align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); }
.dash-mod .thumb { aspect-ratio: 16/9; border-radius: 10px; background: var(--navy) center/cover no-repeat; position: relative; }
.dash-mod.locked .thumb { filter: grayscale(1) brightness(.6); }
.dash-mod h3 { font-size: 1.05rem; margin-bottom: 2px; }
.dash-mod p { margin: 0 0 8px; color: var(--muted); font-size: .9rem; }
.mini-bar { height: 6px; background: var(--blue-soft); border-radius: 999px; overflow: hidden; max-width: 320px; }
.mini-bar i { display: block; height: 100%; background: var(--blue); }
.dash-mod.done .mini-bar i { background: var(--green); }

.section-title { font-size: 1.2rem; margin: 34px 0 14px; display: flex; align-items: center; gap: 10px; }

/* Calculator */
.calc { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.calc .field input { background: var(--card); }
.calc-out { background: var(--navy); color: #fff; border-radius: 14px; padding: 20px; display: grid; gap: 12px; align-content: start; }
.calc-out div { display: flex; justify-content: space-between; border-bottom: 1px solid rgba(255, 255, 255, .08); padding-bottom: 10px; }
.calc-out div:last-child { border: 0; padding: 0; }
.calc-out span { color: #94a3b8; font-size: .9rem; }
.calc-out strong { font-size: 1.1rem; }
.calc-out .big strong { color: var(--gold-2); font-size: 1.4rem; }

/* Toast + modal */
.toast-wrap { position: fixed; right: 20px; bottom: 20px; z-index: 85; display: grid; gap: 10px; pointer-events: none; }
.modal .btn { white-space: normal; line-height: 1.3; text-align: center; }
.toast {
  background: var(--navy); color: #fff; padding: 14px 18px; border-radius: 14px; font-weight: 700;
  box-shadow: 0 16px 40px rgba(0, 0, 0, .25); display: flex; gap: 12px; align-items: center;
  animation: toastIn .35s cubic-bezier(.2, .9, .3, 1.3);
}
.toast .xp { color: var(--gold-2); }
@keyframes toastIn { from { transform: translateY(20px) scale(.95); opacity: 0; } to { transform: none; opacity: 1; } }

.modal-bg { position: fixed; inset: 0; background: rgba(6, 15, 31, .7); z-index: 90; display: none; place-items: center; padding: 20px; backdrop-filter: blur(4px); }
.modal-bg.show { display: grid; }
.modal { background: var(--card); border: 1px solid rgba(255, 255, 255, .1); color: var(--ink); border-radius: 22px; max-width: 480px; width: 100%; padding: 36px 30px 30px; text-align: center; animation: pop .45s cubic-bezier(.2, .9, .3, 1.3); }
.modal .medal { width: 96px; height: 96px; font-size: 1.8rem; }
.modal h2 { font-size: 1.6rem; margin-top: 10px; }
.modal p { color: var(--ink-2); }
.modal .bonus { display: inline-block; font-weight: 800; color: var(--gold-2); background: var(--gold-soft); padding: .4rem .8rem; border-radius: 999px; margin-bottom: 18px; }
.modal .btns { display: grid; gap: 10px; margin-top: 8px; }
@keyframes pop { from { transform: scale(.8); opacity: 0; } to { transform: none; opacity: 1; } }

#confetti { position: fixed; inset: 0; pointer-events: none; z-index: 95; }

/* ═════════ Certificate ═════════ */
.cert-wrap { padding: 3px; border-radius: 22px; background: linear-gradient(135deg, #8a6417, var(--gold) 18%, #fff0c4 32%, var(--gold) 46%, #7d5a13 62%, var(--gold-2) 82%, #8a6417); box-shadow: 0 20px 60px rgba(0, 0, 0, .55); }
.cert {
  position: relative; overflow: hidden; border-radius: 19px; padding: 44px 38px 36px; text-align: center;
  background:
    radial-gradient(620px 300px at 50% -8%, rgba(245, 166, 35, .16), transparent 68%),
    radial-gradient(420px 260px at 50% 108%, rgba(24, 140, 107, .14), transparent 70%),
    linear-gradient(180deg, #14171c, #0c0e11);
}
.cert::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .35;
  background-image: repeating-linear-gradient(45deg, rgba(245, 166, 35, .06) 0 1px, transparent 1px 11px), repeating-linear-gradient(-45deg, rgba(245, 166, 35, .06) 0 1px, transparent 1px 11px);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, transparent 35%, #000 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, transparent 35%, #000 100%);
}
.cert-corner { position: absolute; width: 34px; height: 34px; border: 2px solid rgba(245, 166, 35, .55); }
.cert-corner.tl { top: 14px; left: 14px; border-right: 0; border-bottom: 0; border-radius: 8px 0 0 0; }
.cert-corner.tr { top: 14px; right: 14px; border-left: 0; border-bottom: 0; border-radius: 0 8px 0 0; }
.cert-corner.bl { bottom: 14px; left: 14px; border-right: 0; border-top: 0; border-radius: 0 0 0 8px; }
.cert-corner.br { bottom: 14px; right: 14px; border-left: 0; border-top: 0; border-radius: 0 0 8px 0; }
.cert > * { position: relative; }
.cert-brand { display: flex; align-items: center; justify-content: center; gap: 10px; color: var(--ink-2); font-weight: 700; font-size: .88rem; letter-spacing: .02em; }
.cert-brand .logo-mark { width: 30px; height: 30px; flex-basis: 30px; }
.cert-kicker { margin-top: 18px; font-size: .72rem; font-weight: 800; letter-spacing: .34em; text-transform: uppercase; color: var(--gold-2); }
.cert-seal {
  width: 92px; height: 92px; margin: 20px auto 6px; border-radius: 50%; display: grid; place-items: center;
  background: radial-gradient(circle at 32% 28%, #fff4d0, var(--gold) 52%, #a4740f);
  box-shadow: 0 0 0 6px rgba(245, 166, 35, .12), 0 10px 26px rgba(0, 0, 0, .5); color: #3a2a05;
}
.cert-seal span { font-size: 1.9rem; line-height: 1; }
.cert-award { font-family: "Merriweather", Georgia, serif; font-size: clamp(1.6rem, 4vw, 2.3rem); font-weight: 900; letter-spacing: -.01em; margin: 10px 0 2px;
  background: linear-gradient(120deg, var(--gold-2), #fff3cc 45%, var(--gold)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.cert-sub { color: var(--muted); font-size: .92rem; margin: 0 0 22px; }
.cert-presented { font-size: .74rem; font-weight: 800; letter-spacing: .28em; text-transform: uppercase; color: var(--muted); }
.cert-name { font-family: "Merriweather", Georgia, serif; font-style: italic; font-weight: 900; font-size: clamp(1.9rem, 5vw, 2.9rem); color: #fff; margin: 12px 0 14px; line-height: 1.15; }
.cert-rule { width: min(360px, 80%); height: 1px; margin: 0 auto 18px; background: linear-gradient(90deg, transparent, rgba(245, 166, 35, .7), transparent); position: relative; }
.cert-rule::after { content: "◆"; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); color: var(--gold); font-size: .6rem; background: #0f1114; padding: 0 8px; }
.cert-body { color: var(--ink-2); max-width: 520px; margin: 0 auto; line-height: 1.7; font-size: .98rem; }
.cert-body strong { color: #fff; }
.cert-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; max-width: 520px; margin: 26px auto 0; }
.cert-stat { background: rgba(255, 255, 255, .04); border: 1px solid rgba(245, 166, 35, .18); border-radius: 12px; padding: 12px 8px; }
.cert-stat b { display: block; font-size: 1.1rem; color: var(--gold-2); }
.cert-stat span { font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.cert-foot { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; margin-top: 30px; text-align: left; }
.cert-sig { flex: 1; }
.cert-sig .sig { font-family: "Merriweather", Georgia, serif; font-style: italic; font-size: 1.35rem; color: #fff; }
.cert-sig .line { height: 1px; background: rgba(245, 166, 35, .45); margin: 6px 0 6px; }
.cert-sig small, .cert-issued small { color: var(--muted); font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; }
.cert-issued { text-align: right; }
.cert-issued b { display: block; color: var(--ink-2); font-size: .92rem; font-weight: 700; }
.cert-id { font-family: ui-monospace, Menlo, monospace; font-size: .74rem; color: var(--muted); letter-spacing: .04em; }
.cert-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 22px; }
.cert-actions .btn { padding: .8rem 1.3rem; font-size: .9rem; }

@media (max-width: 640px) {
  .cert { padding: 32px 18px 26px; }
  .cert-stats { grid-template-columns: 1fr 1fr; }
  .cert-foot { flex-direction: column; align-items: center; text-align: center; gap: 16px; }
  .cert-issued { text-align: center; }
  .cert-sig .line { width: 200px; margin-inline: auto; }
  .cert-actions .btn { width: 100%; }
}

@media print {
  .app-top, .sidebar, .toast-wrap, #confetti, .cert-actions, .workshop-cta, .ark-tip, .card, .disclaimer, .modal-bg { display: none !important; }
  body, .app, .main { background: #fff !important; display: block !important; padding: 0 !important; }
  .cert-wrap { box-shadow: none; background: var(--gold); }
  .cert { background: #fff !important; color: #111 !important; }
  .cert::before { opacity: .5; }
  .cert-name, .cert-body strong, .cert-sig .sig { color: #111 !important; }
  .cert-award { -webkit-text-fill-color: #8a6417; color: #8a6417 !important; }
  .cert-body, .cert-issued b { color: #333 !important; }
  .cert-stat { border-color: #d9b45a; }
  .cert-stat b { color: #8a6417; }
  .cert-brand { color: #333 !important; }
  .cert-kicker { color: #8a6417 !important; }
  .cert-rule::after { background: #fff !important; color: #8a6417 !important; }
  .cert-presented, .cert-sub, .cert-stat span, .cert-sig small, .cert-issued small, .cert-id { color: #555 !important; }
  .cert-seal { box-shadow: none; }
}

.disclaimer { font-size: .78rem; color: var(--muted); margin-top: 40px; border-top: 1px solid var(--line); padding-top: 16px; }

/* ── Responsive ─────────────────────────── */
@media (max-width: 980px) {
  .badges { grid-template-columns: repeat(3, 1fr); }
  .app { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed; top: calc(60px + var(--bm-h)); left: 0; bottom: 0; width: 320px; max-width: 88vw; height: auto; z-index: 40;
    transform: translateX(-100%); transition: transform .25s; box-shadow: 0 0 40px rgba(0, 0, 0, .2);
  }
  .sidebar.open { transform: none; }
  .menu-btn { display: block; }
  .main { padding: 24px 20px 70px; }
  .level-box { display: none; }
  .bm-inner { flex-wrap: wrap; gap: 8px 10px; padding: 9px 16px; }
  .bm-copy { flex: 1 1 200px; font-size: .8rem; }
  .bm-close { margin-left: 0; }
  .dash-stats { grid-template-columns: 1fr 1fr; }
  .workshop-cta { grid-template-columns: 1fr; }
  .writeup .wheel { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .app-top .bar { gap: 10px; padding: 10px 12px; }
  .toast-wrap { left: 12px; right: 12px; top: 64px; bottom: auto; justify-items: center; }
  .toast { font-size: .88rem; padding: 11px 14px; }
  .modal { padding: 28px 20px 22px; }
  .app-top .logo { font-size: 0; gap: 0; }
  .app-top .logo-mark { width: 32px; height: 32px; flex-basis: 32px; }
  .hud { gap: 8px; min-width: 0; }
  .hud-item { gap: 5px; font-size: .85rem; }
  .hud-item .ico { width: 24px; height: 24px; font-size: .72rem; }
  .logout-btn { padding: 7px 10px; font-size: .78rem; }
  .main { padding: 20px 14px 70px; }
  .dash-hero { padding: 24px 20px; }
  .dash-stats { gap: 10px; }
  .workshop-cta { padding: 24px 20px; }
  .workshop-cta .btn { width: 100%; }
  .complete-row .btn { width: 100%; }
  .writeup table.terms td:first-child { width: 40%; }
  .calc { grid-template-columns: 1fr; }
  .tools { grid-template-columns: 1fr; }
  .dash-mod { grid-template-columns: 1fr; }
  .dash-mod .btn { width: 100%; }
  .hud { gap: 10px; }
  .hud-item .lbl { display: none; }
  .card { padding: 20px; }
}


/* ═════════ Login gate ═════════ */
.funnel-body { min-height: 100vh; background: radial-gradient(900px 500px at 50% -10%, rgba(24, 140, 107, .22), transparent 65%), var(--bg); }
.funnel-top { padding: 20px 0; border-bottom: 1px solid var(--line); }
.funnel-wrap { padding: 56px 20px; display: grid; place-items: start center; }
.survey { width: 100%; max-width: 480px; }
.survey-card { background: var(--card); border: 1px solid rgba(255, 255, 255, .1); border-radius: 22px; padding: 34px; box-shadow: 0 10px 50px rgba(0, 0, 0, .5); }
.survey-q { font-size: 1.6rem; margin-bottom: 14px; }
.survey-hint { color: var(--muted); margin: 0 0 18px; }
.field { margin-bottom: 12px; }
.field label { display: block; font-size: .82rem; font-weight: 700; margin-bottom: 6px; color: var(--ink-2); }
.field input { width: 100%; font: 500 1rem var(--font); color: #fff; padding: .95rem 1rem; border-radius: 12px; border: 1px solid rgba(255, 255, 255, .12); background: var(--bg-2); transition: border-color .2s, box-shadow .2s; }
.field input:focus { outline: none; border-color: var(--blue-2); box-shadow: 0 0 0 4px rgba(24, 140, 107, .2); }
.form-error { color: #fca5a5; font-size: .88rem; min-height: 1.2em; margin: 2px 0 8px; }
.fineprint { font-size: .8rem; color: var(--muted); text-align: center; margin: 14px 0 0; }