/* Eltech Academy - builds on main.css */

.academy { background: var(--soft); }
.academy main { min-height: 70vh; padding-bottom: 64px; }
.muted { color: var(--muted); }
.section-tight { padding: 40px 0 0; }
.section-tight h2 { font-size: 1.4rem; margin-bottom: 1.25rem; }

/* Header bits */
.acad-user { display: flex; align-items: center; gap: .5rem; }
.acad-user form { margin: 0; }
.acad-link {
  display: inline-flex; align-items: center; gap: .4rem; padding: .5rem .7rem; border-radius: 8px;
  color: var(--text); font: inherit; font-weight: 500; background: none; border: 0; cursor: pointer;
}
.acad-link:hover { background: var(--soft); color: var(--blue); }
.avatar { width: 34px; height: 34px; border-radius: 50%; object-fit: cover; }
.avatar-letter { display: grid; place-items: center; background: var(--blue); color: var(--white); font-weight: 700; }
@media (max-width: 640px) {
  .acad-link span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .brand-tag, .acad-home { display: none; }
  .academy .brand-name { font-size: .9rem; }
  .acad-user { gap: .15rem; }
}

.flash {
  margin: 20px 0 0; padding: .85rem 1.1rem; border-radius: 10px;
  background: #fff4e5; color: #7a4a00; border: 1px solid #f5d9a8; font-weight: 500;
}

/* Form controls inside academy forms */
.task-form label, .unlock-card label, .admin-review label { display: block; font-weight: 500; color: var(--navy); margin: 1rem 0 .35rem; }
.task-form textarea, .task-form input, .unlock-card textarea, .admin-review textarea, .dev-login input {
  width: 100%; font: inherit; color: var(--text); padding: .75rem .9rem;
  border: 1px solid #c4ccd8; border-radius: 10px; background: var(--white);
}
.task-form .btn, .unlock-card .btn { margin-top: 1rem; }
.optional { font-weight: 400; color: var(--muted); }

/* Sign-in */
.acad-hero {
  color: #c9d4e5; padding: 64px 0 80px;
  background:
    radial-gradient(55% 70% at 85% 30%, rgba(37, 99, 235, .45), transparent 70%),
    linear-gradient(160deg, #0b1b34, var(--navy) 55%, #143a6e);
}
.acad-hero h1 { color: var(--white); margin-bottom: 1rem; }
.acad-hero .lead { font-size: 1.15rem; max-width: 520px; }
.acad-hero .hero-ticks i { color: #8db8ff; }
.acad-signin { display: grid; gap: 2.5rem; align-items: center; }
@media (min-width: 900px) {
  .acad-signin { grid-template-columns: 1.1fr 1fr; gap: 4rem; }
}
.signin-card {
  background: var(--white); color: var(--text); border-radius: 20px; padding: 2rem;
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .5);
}
.signin-card h2 { font-size: 1.5rem; }
.signin-card .g_id_signin { margin: 1.25rem 0 .5rem; min-height: 44px; }
.signin-note { font-size: .85rem; color: var(--muted); margin: 1rem 0 0; }
.dev-login { margin-top: 1.25rem; padding: 1rem; border: 1px dashed #c4ccd8; border-radius: 12px; display: grid; gap: .6rem; }
.dev-login p { margin: 0; font-size: .9rem; }

/* Dashboard */
.acad-welcome { background: var(--navy); color: #c9d4e5; padding: 28px 0; }
.acad-welcome h1 { color: var(--white); font-size: clamp(1.5rem, 3.5vw, 2.1rem); margin-bottom: .25rem; }
.acad-welcome .lead { margin: 0; }
.welcome-grid { display: grid; gap: 1.25rem; align-items: center; }
@media (min-width: 900px) {
  .welcome-grid { grid-template-columns: 1fr auto; gap: 2rem; }
}
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: .5rem; }
.stats li {
  display: grid; justify-items: center; text-align: center; gap: .1rem; min-width: 76px;
  background: var(--navy-2); border: 1px solid rgba(255, 255, 255, .08); border-radius: 12px; padding: .6rem .5rem;
}
.stats i { font-size: 1.15rem; color: #fbbf24; }
.stats li:nth-child(2) i { color: #fb923c; }
.stats li:nth-child(3) i { color: #4ade80; }
.stats li:nth-child(4) i { color: #8db8ff; }
.stats strong { color: var(--white); font-size: 1.25rem; line-height: 1.1; }
.stats span { font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; }

.continue-card {
  display: flex; align-items: center; gap: 1rem; margin-top: 20px;
  background: linear-gradient(120deg, var(--blue), var(--blue-bright)); color: #e3ecfa;
  border-radius: 16px; padding: .8rem 1.25rem .8rem .8rem; box-shadow: 0 14px 30px -18px rgba(21, 101, 192, .8);
}
.continue-card:hover { color: var(--white); filter: brightness(1.05); }
.continue-card img { width: 96px; height: 64px; object-fit: cover; border-radius: 10px; flex: none; }
.continue-text { display: grid; flex: 1; min-width: 0; }
.continue-text strong { color: var(--white); font-size: 1.05rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.continue-text span:last-child { font-size: .88rem; }
.continue-label { font-size: .7rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: #cfe0fa; }
.continue-card > i { font-size: 2.2rem; color: var(--white); flex: none; }

.row-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .25rem 1rem; margin-bottom: 1rem; }
.row-head h2 { margin: 0; }
.row-head .muted { font-size: .9rem; }

.acad-courses { display: grid; gap: 1rem; }
@media (min-width: 640px) {
  .acad-courses { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
}
@media (min-width: 1000px) {
  .acad-courses { grid-template-columns: repeat(3, 1fr); }
}
.acad-course {
  display: flex; flex-direction: column; overflow: hidden; color: var(--text);
  background: var(--white); border: 1px solid var(--line); border-radius: 16px;
  transition: transform .2s, box-shadow .2s;
}
a.acad-course:hover { color: var(--text); transform: translateY(-3px); box-shadow: 0 18px 36px -22px rgba(15, 36, 68, .55); }
.course-cover { position: relative; display: block; aspect-ratio: 16 / 7; overflow: hidden; background: var(--tint); }
.course-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
a.acad-course:hover .course-cover img { transform: scale(1.04); }
.cover-level, .cover-done {
  position: absolute; top: .6rem; font-size: .72rem; font-weight: 700; padding: .25rem .6rem; border-radius: 99px;
}
.cover-level { left: .6rem; background: rgba(255, 255, 255, .92); color: var(--navy); }
.cover-done { right: .6rem; background: #fbbf24; color: #422006; }
.course-info { display: flex; flex-direction: column; gap: .35rem; padding: .9rem 1.1rem 1rem; flex: 1; }
.course-title { color: var(--navy); font-size: 1.08rem; line-height: 1.3; }
.course-tagline { color: var(--muted); font-size: .92rem; }
.course-meta { display: flex; flex-wrap: wrap; gap: .25rem 1rem; font-size: .82rem; color: var(--muted); }
.course-meta i { color: var(--blue); }
.acad-course .progress { margin: .2rem 0 0; height: 6px; }
.course-foot { display: flex; align-items: center; justify-content: space-between; gap: .5rem; margin-top: auto; padding-top: .6rem; border-top: 1px solid var(--line); }
.course-price-tag { font-size: .82rem; font-weight: 600; color: #157347; }
.course-cta { font-weight: 700; color: var(--blue); white-space: nowrap; }
.acad-course.is-soon { opacity: .7; }
.acad-course.is-soon .course-cover img { filter: grayscale(.6); }
.progress { height: 8px; border-radius: 99px; background: var(--tint); overflow: hidden; display: block; }
.progress span { display: block; height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--blue), #16a34a); transition: width .6s ease; }

/* Phones: compact row cards so all courses fit with little scrolling */
@media (max-width: 639px) {
  .acad-course { flex-direction: row; }
  .course-cover { aspect-ratio: auto; width: 104px; flex: none; }
  .cover-level, .cover-done { display: none; }
  .course-info { padding: .7rem .85rem; gap: .2rem; }
  .course-title { font-size: 1rem; }
  .course-tagline { display: none; }
  .course-foot { padding-top: .45rem; }
}

.badges { display: flex; gap: .6rem; overflow-x: auto; padding-bottom: .25rem; scrollbar-width: thin; }
.badges li {
  flex: 0 0 auto; display: flex; align-items: center; gap: .6rem; padding: .6rem .9rem; border-radius: 12px;
  background: var(--white); border: 1px dashed #c4ccd8; color: var(--muted); font-size: .8rem;
}
.badges li span { display: grid; line-height: 1.3; }
.badges i { font-size: 1.4rem; color: #c4ccd8; }
.badges strong { color: var(--muted); font-size: .88rem; }
.badges li.earned { border: 1px solid #f5d9a8; background: #fffaf0; color: #7a4a00; }
.badges li.earned i { color: #f59e0b; }
.badges li.earned strong { color: var(--navy); }

/* Sign-in page course preview */
.course-strip { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; }
@media (min-width: 768px) {
  .course-strip { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1100px) {
  .course-strip { grid-template-columns: repeat(6, 1fr); }
}
.strip-item { display: grid; gap: .15rem; background: var(--white); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; padding-bottom: .6rem; }
.strip-item img { width: 100%; aspect-ratio: 16 / 8; object-fit: cover; margin-bottom: .35rem; }
.strip-item strong { color: var(--navy); font-size: .88rem; line-height: 1.3; padding: 0 .7rem; }
.strip-item span { color: var(--muted); font-size: .76rem; padding: 0 .7rem; }

/* Course page */
.acad-course-head {
  color: #c9d4e5; padding: 28px 0 40px;
  background: linear-gradient(100deg, rgba(15, 36, 68, .96) 40%, rgba(15, 36, 68, .45)), var(--cover, none) center / cover, var(--navy);
}
.acad-course-head h1 { color: var(--white); margin: .75rem 0; }
.acad-course-head .lead { max-width: 640px; margin-bottom: 1.5rem; }
.head-actions { display: flex; flex-wrap: wrap; gap: .75rem; }

.back-link { display: inline-flex; align-items: center; gap: .4rem; font-weight: 500; font-size: .95rem; margin-bottom: 1rem; }
.acad-course-head .back-link { color: #8db8ff; }
.level-dark { background: rgba(255, 255, 255, .1); color: #bcd4ff; }
.course-head-grid { display: grid; gap: 2rem; align-items: center; }
@media (min-width: 900px) {
  .course-head-grid { grid-template-columns: 1fr 280px; }
}
.course-progress-card { background: var(--navy-2); border: 1px solid rgba(255, 255, 255, .08); border-radius: 18px; padding: 1.5rem; text-align: center; }
.course-progress-card p { margin: .5rem 0 0; }
.course-progress-card strong { color: var(--white); }
.course-progress-card .muted { color: #c9d4e5; font-size: .92rem; }
.ring {
  --pct: 0; width: 110px; height: 110px; margin: 0 auto; border-radius: 50%; display: grid; place-items: center;
  background: conic-gradient(#4ade80 calc(var(--pct) * 1%), rgba(255, 255, 255, .12) 0);
}
.ring span { display: grid; place-items: center; width: 84px; height: 84px; border-radius: 50%; background: var(--navy-2); color: var(--white); font-size: 1.4rem; font-weight: 700; }

.course-body { display: grid; gap: 2rem; align-items: start; }
@media (min-width: 900px) {
  .course-body { grid-template-columns: 1fr 340px; }
}
.lesson-list { display: grid; gap: .6rem; }
.lesson-item {
  display: flex; gap: 1rem; align-items: center; padding: 1rem 1.1rem;
  background: var(--white); border: 1px solid var(--line); border-radius: 14px;
}
.lesson-num {
  flex: none; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%;
  background: var(--tint); color: var(--blue); font-weight: 700;
}
.lesson-item.is-done .lesson-num { background: #16a34a; color: var(--white); }
.lesson-item.is-open { border-color: var(--blue); box-shadow: 0 8px 20px -14px rgba(21, 101, 192, .6); }
.lesson-item.is-open .lesson-num { background: var(--blue); color: var(--white); }
.lesson-item.is-locked, .lesson-item.is-paid { opacity: .75; }
/* Play button on the right; the whole row is clickable when the lesson is available */
.lesson-item { position: relative; }
.lesson-info { flex: 1; min-width: 0; }
.lesson-info a::after { content: ""; position: absolute; inset: 0; border-radius: 14px; }
.lesson-item.is-open:hover, .lesson-item.is-done:hover { border-color: var(--blue); }
.lesson-play {
  flex: none; display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
  background: var(--soft); color: #c4ccd8; font-size: 1.35rem; transition: transform .2s, background .2s;
  pointer-events: none; /* decorative: clicks go to the row's link underneath */
}
.lesson-play .bi-play-fill { margin-left: 3px; }
.lesson-item.is-open .lesson-play { background: var(--blue); color: var(--white); box-shadow: 0 8px 18px -8px rgba(21, 101, 192, .7); }
.lesson-item.is-done .lesson-play { background: #e7f6ee; color: #16a34a; }
.lesson-item.is-open:hover .lesson-play, .lesson-item.is-done:hover .lesson-play { transform: scale(1.08); }
@media (max-width: 480px) {
  .lesson-play { width: 38px; height: 38px; font-size: 1.15rem; }
}

.lesson-item.is-intro .lesson-num { background: linear-gradient(135deg, var(--blue), #7c3aed); color: var(--white); font-size: 1.3rem; }
.lesson-item.is-intro.is-done .lesson-num { background: #16a34a; }

/* Intro video inside the course */
.intro-player { position: relative; margin: 1.5rem 0 1rem; border-radius: 16px; overflow: hidden; background: #000; box-shadow: 0 24px 48px -24px rgba(15, 36, 68, .6); }
.intro-player video { display: block; width: 100%; aspect-ratio: 16 / 9; background: #000; }
.intro-end {
  position: absolute; inset: 0; z-index: 3; display: none; flex-direction: column; align-items: center; justify-content: center; gap: .9rem;
  background: rgba(15, 36, 68, .88); color: var(--white); text-align: center; padding: 1rem;
}
.intro-end p { margin: 0; font-size: 1.1rem; color: #e3ecfa; }
.intro-player.ended .intro-end { display: flex; }
.intro-watched {
  position: absolute; top: 12px; right: 12px; z-index: 2; display: inline-flex; align-items: center; gap: .35rem;
  padding: .35rem .8rem; border-radius: 99px; background: #16a34a; color: var(--white); font-weight: 600; font-size: .85rem;
}
.intro-player.ended .intro-watched { display: none; }
.intro-end p i { color: #4ade80; }
@media (max-width: 767px) {
  .intro-player { margin-left: -1.25rem; margin-right: -1.25rem; border-radius: 0; }
  .intro-watched { top: 8px; right: 8px; padding: .25rem .65rem; font-size: .78rem; }
  .intro-end p { font-size: .95rem; }
  .intro-end .btn { padding: .55rem 1rem; font-size: .9rem; }
}
.lesson-item.is-paid .lesson-num { background: #fff4e5; color: #b45309; }
.lesson-info { display: grid; }
.lesson-info a, .lesson-title { font-weight: 600; color: var(--navy); }
.lesson-info a:hover { color: var(--blue); }
.lesson-meta { font-size: .85rem; color: var(--muted); }
.tag-free { display: inline-block; font-size: .75rem; font-weight: 700; color: #157347; background: #e7f6ee; padding: .05rem .5rem; border-radius: 99px; }

.unlock-card, .outcomes-card {
  background: var(--white); border: 1px solid var(--line); border-radius: 18px; padding: 1.5rem; margin-bottom: 1.25rem;
}
.unlock-card { border: 2px solid #f59e0b; }
.unlock-card > i { font-size: 1.8rem; color: #f59e0b; }
.unlock-card h2, .outcomes-card h2 { font-size: 1.2rem; margin: .5rem 0; }
.unlock-price { font-size: 1.6rem; font-weight: 700; color: var(--navy); margin: .25rem 0 .75rem; }
.unlock-price span { font-size: .9rem; font-weight: 500; color: var(--muted); }
.btn-pay { width: 100%; font-size: 1.05rem; padding-top: .95rem; padding-bottom: .95rem; }
.pay-note { margin: .6rem 0 0; font-size: .88rem; color: var(--muted); text-align: center; }
.pay-note i { color: #f59e0b; }
.pay-other { margin-top: 1.25rem; padding-top: 1rem; border-top: 1px solid var(--line); font-size: .95rem; }
.pay-other summary { cursor: pointer; font-weight: 600; color: var(--blue); }
.pay-other[open] summary { margin-bottom: .75rem; }

/* Payment pop-up */
.pay-modal { width: min(440px, calc(100vw - 24px)); }
.pay-step { text-align: center; }
.pay-step h2 { font-size: 1.5rem; }
.pay-amount { font-size: 2rem; font-weight: 700; color: var(--navy); margin: .25rem 0 1.25rem; }
.pay-form { text-align: left; }
.pay-form label { display: block; font-weight: 500; color: var(--navy); margin-bottom: .35rem; }
.pay-form input {
  width: 100%; font: inherit; font-size: 1.15rem; letter-spacing: .03em; padding: .8rem 1rem;
  border: 1px solid #c4ccd8; border-radius: 10px; margin-bottom: 1rem;
}
.pay-form .btn { width: 100%; font-size: 1.05rem; }
.pay-secure { font-size: .85rem; color: var(--muted); margin: 1rem 0 0; }
.pay-phone-anim {
  width: 84px; height: 84px; margin: .5rem auto 1rem; border-radius: 50%;
  display: grid; place-items: center; background: var(--tint); color: var(--blue); font-size: 2.4rem;
  animation: pay-pulse 1.4s ease-in-out infinite;
}
@keyframes pay-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(21, 101, 192, .35); }
  50% { box-shadow: 0 0 0 16px rgba(21, 101, 192, 0); }
}
.pay-wait-msg { font-size: 1.05rem; color: var(--navy); }
.pay-icon { width: 76px; height: 76px; margin: .5rem auto 1rem; border-radius: 50%; display: grid; place-items: center; font-size: 2.2rem; color: var(--white); }
.pay-icon-ok { background: #16a34a; }
.pay-icon-fail { background: #dc2626; }
.pay-step .btn { margin-top: .5rem; }
@media (prefers-reduced-motion: reduce) {
  .pay-phone-anim { animation: none; }
}

.unlock-steps { list-style: decimal; padding-left: 1.2rem; font-size: .95rem; }
.unlock-steps li { margin-bottom: .4rem; }
.unlock-card .btn { width: 100%; }
.unlock-card .unlock-price { margin-bottom: 1rem; }

.cert-banner {
  display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; margin-bottom: 1.5rem;
  background: #fffaf0; border: 2px solid #f59e0b; border-radius: 16px; padding: 1.1rem 1.25rem;
}
.cert-banner > i { font-size: 2.2rem; color: #f59e0b; }
.cert-banner div { flex: 1; display: grid; }
.cert-banner strong { color: var(--navy); }

/* Lesson page */
.lesson-progress { position: sticky; top: var(--header-h); z-index: 20; height: 4px; background: var(--tint); }
.lesson-progress span { display: block; height: 100%; background: linear-gradient(90deg, var(--blue), #16a34a); }
.lesson-layout { display: grid; gap: 2rem; padding-top: 28px; align-items: start; }
@media (min-width: 1000px) {
  .lesson-layout { grid-template-columns: 260px 1fr; gap: 3rem; }
  .lesson-side { position: sticky; top: calc(var(--header-h) + 24px); }
}
.side-list { display: none; }
@media (min-width: 1000px) {
  .side-list { display: grid; gap: .25rem; }
}
.side-list li { display: flex; gap: .6rem; align-items: flex-start; padding: .5rem .6rem; border-radius: 10px; font-size: .92rem; }
.side-list li.is-current { background: var(--white); box-shadow: 0 4px 14px -10px rgba(15, 36, 68, .5); }
.side-list a { color: var(--text); }
.side-list a[aria-current] { color: var(--navy); font-weight: 600; }
.side-list span { color: var(--muted); }
.side-icon i { color: #c4ccd8; }
.side-list .is-done .side-icon i { color: #16a34a; }
.side-list .is-open .side-icon i { color: var(--blue); }

.lesson {
  background: var(--white); border: 1px solid var(--line); border-radius: 20px;
  padding: 1.5rem 1.25rem 2rem; min-width: 0;
}
@media (min-width: 768px) {
  .lesson { padding: 2.5rem 3rem 3rem; }
}
.lesson-kicker { font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--blue); }
.lesson h1 { font-size: clamp(1.7rem, 4vw, 2.3rem); }
.lesson-summary { font-size: 1.15rem; color: var(--muted); }
.lesson-body { font-size: 1.05rem; line-height: 1.75; }
.lesson-body h2 { font-size: 1.35rem; margin: 2rem 0 .75rem; }
.lesson-body ul { list-style: disc; padding-left: 1.3rem; margin-bottom: 1rem; }
.lesson-body ol { list-style: decimal; padding-left: 1.3rem; margin-bottom: 1rem; }
.lesson-body li { margin-bottom: .4rem; }
.lesson-body code { font-family: Consolas, "Courier New", monospace; font-size: .92em; background: var(--soft); color: var(--navy); padding: .1rem .4rem; border-radius: 6px; overflow-wrap: anywhere; }
.lesson-hook {
  font-size: 1.15rem; color: var(--navy); font-weight: 500;
  border-left: 4px solid var(--blue); padding: .25rem 0 .25rem 1rem; margin: 1.5rem 0;
}

.lesson-grid { display: grid; gap: .75rem; margin: 1rem 0 1.5rem; }
@media (min-width: 640px) {
  .lesson-grid { grid-template-columns: repeat(2, 1fr); }
}
.lesson-grid div { display: grid; gap: .15rem; background: var(--soft); border-radius: 12px; padding: 1rem; line-height: 1.5; }
.lesson-grid i { font-size: 1.3rem; color: var(--blue); }
.lesson-grid strong { color: var(--navy); }
.lesson-grid span { font-size: .95rem; color: var(--muted); }

.tool-cards { display: grid; gap: .75rem; margin: 1rem 0 1.5rem; }
@media (min-width: 640px) {
  .tool-cards { grid-template-columns: repeat(2, 1fr); }
}
.tool-cards div { border: 1px solid var(--line); border-top: 4px solid var(--blue); border-radius: 12px; padding: 1rem; line-height: 1.5; }
.tool-cards strong { display: block; color: var(--navy); font-size: 1.1rem; }
.tool-cards span { font-size: .85rem; color: var(--muted); }
.tool-cards p { margin: .4rem 0 0; font-size: .95rem; }

.callout { display: flex; gap: 1rem; border-radius: 14px; padding: 1.1rem 1.25rem; margin: 1.5rem 0; line-height: 1.6; }
.callout > i { font-size: 1.5rem; flex: none; }
.callout p { margin: .25rem 0 0; }
.callout-tip { background: var(--tint); }
.callout-tip > i { color: var(--blue); }
.callout-try { background: #e7f6ee; }
.callout-try > i { color: #16a34a; }
.callout-warn { background: #fff4e5; }
.callout-warn > i { color: #b45309; }
.callout strong { color: var(--navy); }

.compare { display: grid; gap: .75rem; margin: 1rem 0 1.5rem; }
@media (min-width: 640px) {
  .compare { grid-template-columns: 1fr 1.6fr; }
}
.compare div { border-radius: 12px; padding: 1rem; line-height: 1.5; }
.compare span { font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.compare p { margin: .4rem 0 0; }
.compare-bad { background: #fdecec; }
.compare-bad span { color: #b42318; }
.compare-good { background: #e7f6ee; }
.compare-good span { color: #157347; }

.lesson-body .formula { list-style: none; padding: 0; counter-reset: f; }
.formula li { counter-increment: f; position: relative; padding: .6rem 0 .6rem 2.75rem; border-bottom: 1px solid var(--line); }
.formula li::before {
  content: counter(f); position: absolute; left: 0; top: .6rem;
  width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center;
  background: var(--blue); color: var(--white); font-weight: 700; font-size: .9rem;
}

.takeaways { background: var(--navy); color: #c9d4e5; border-radius: 16px; padding: 1.5rem; margin: 2rem 0; }
.takeaways h2 { color: var(--white); font-size: 1.2rem; display: flex; gap: .5rem; align-items: center; }
.takeaways .checks li::before { color: #4ade80; }
.takeaways li { color: #e3ecfa; }

/* Quiz and task */
.quiz, .task { border-top: 1px solid var(--line); padding-top: 2rem; margin-top: 2rem; }
.quiz-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .5rem 1rem; margin-bottom: 1rem; }
.quiz-head h2 { font-size: 1.3rem; margin: 0; display: flex; gap: .5rem; align-items: center; }
.quiz-badge { font-size: .8rem; font-weight: 600; padding: .3rem .75rem; border-radius: 99px; background: #e7f6ee; color: #157347; }
.quiz-badge-todo { background: #fff4e5; color: #92400e; }

.question { border: 1px solid var(--line); border-radius: 14px; padding: 1.1rem 1.1rem .6rem; margin: 0 0 1rem; transition: border-color .2s, background .2s; }
.question legend { float: left; width: 100%; font-weight: 600; color: var(--navy); margin-bottom: .75rem; }
.question legend span { color: var(--blue); }
.option {
  clear: both; display: flex; gap: .7rem; align-items: flex-start; padding: .7rem .8rem; margin-bottom: .5rem;
  border: 1px solid var(--line); border-radius: 10px; cursor: pointer; transition: border-color .15s, background .15s;
}
.option:hover { border-color: var(--blue); background: var(--soft); }
.option input { margin-top: .3rem; accent-color: var(--blue); }
.option:has(input:checked) { border-color: var(--blue); background: var(--tint); }
.question.is-right { border-color: #16a34a; background: #f3fbf6; }
.question.is-wrong { border-color: #f59e0b; background: #fffaf0; }
.question-feedback { clear: both; margin: .25rem 0 .5rem; font-size: .95rem; }
.is-right .question-feedback { color: #157347; }
.is-wrong .question-feedback { color: #92400e; }

.quiz-result {
  display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1rem;
  margin-top: 1rem; padding: 1.1rem 1.25rem; border-radius: 14px; font-size: 1.05rem;
}
.quiz-result.is-pass { background: #e7f6ee; color: #14532d; }
.quiz-result.is-fail { background: #fff4e5; color: #7a4a00; }
.quiz-result .btn { margin-left: auto; }
.points-pop {
  display: inline-block; font-weight: 700; color: #b45309; background: #fef3c7;
  padding: .2rem .7rem; border-radius: 99px; animation: pop-in .5s cubic-bezier(.2, 1.6, .5, 1);
}
@keyframes pop-in { from { transform: scale(.3); opacity: 0; } to { transform: scale(1); opacity: 1; } }

.task-brief { background: var(--soft); border-radius: 14px; padding: 1.1rem 1.25rem; }
.task-brief ol, .task-brief ul { padding-left: 1.2rem; list-style: decimal; }
.task-brief ul { list-style: disc; }
.task-brief p:last-child, .task-brief ol:last-child, .task-brief ul:last-child { margin-bottom: 0; }
.feedback { display: flex; gap: 1rem; margin-top: 1rem; padding: 1.1rem 1.25rem; border-radius: 14px; background: var(--tint); }
.feedback > i { font-size: 1.5rem; color: var(--blue); }
.feedback strong { color: var(--navy); }
.feedback p { margin: .25rem 0 0; }

.lesson-nav { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .75rem; margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }
@media (max-width: 480px) {
  .lesson-nav .btn { flex: 1 1 auto; padding-left: 1rem; padding-right: 1rem; }
}
.btn.is-disabled { opacity: .45; cursor: not-allowed; transform: none; }

/* Confetti */
.confetti { position: fixed; inset: 0; pointer-events: none; z-index: 200; overflow: hidden; }
.confetti span { position: absolute; top: -12px; width: 9px; height: 14px; border-radius: 2px; animation: confetti-fall linear forwards; }
@keyframes confetti-fall { to { top: 105vh; transform: translateX(40px) rotate(720deg); } }

/* Admin */
.admin-tabs { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1rem 0 1.5rem; }
.admin-tabs a { padding: .55rem 1rem; border-radius: 99px; background: var(--white); border: 1px solid var(--line); color: var(--text); font-weight: 500; }
.admin-tabs a[aria-current] { background: var(--blue); border-color: var(--blue); color: var(--white); }
.admin-tabs span { display: inline-block; min-width: 1.6em; text-align: center; margin-left: .3rem; padding: 0 .4rem; border-radius: 99px; background: rgba(15, 36, 68, .1); font-size: .85rem; }
.admin-card { background: var(--white); border: 1px solid var(--line); border-radius: 14px; padding: 1.25rem; margin-bottom: 1rem; }
.admin-card.is-pending { border-left: 4px solid #f59e0b; }
.admin-card header { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.admin-card header .quiz-badge { margin-left: auto; }
.admin-answer { background: var(--soft); border-radius: 10px; padding: .9rem 1rem; margin-bottom: .75rem; overflow-wrap: anywhere; }
.admin-buttons { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .75rem; }
.admin-buttons form { margin: 0; }
.table-wrap { overflow-x: auto; background: var(--white); border: 1px solid var(--line); border-radius: 14px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.admin-table th, .admin-table td { text-align: left; padding: .75rem 1rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.admin-table th { background: var(--soft); color: var(--navy); }
.inline-form { margin: 0 0 .25rem; }
.link-button { background: none; border: 0; padding: 0; color: var(--blue); font: inherit; cursor: pointer; text-decoration: underline; }

.price-row { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1rem; }
.price-row > div { flex: 1 1 220px; display: grid; }
.price-input { display: inline-flex; align-items: center; border: 1px solid #c4ccd8; border-radius: 10px; overflow: hidden; background: var(--white); }
.price-input span { padding: 0 .7rem; color: var(--muted); font-weight: 600; background: var(--soft); align-self: stretch; display: grid; place-items: center; }
.price-input input { width: 130px; border: 0; padding: .55rem .7rem; font: inherit; font-weight: 600; color: var(--navy); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Admin: Visitors */
.v-tiles { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; margin-bottom: 1rem; }
@media (min-width: 900px) {
  .v-tiles { grid-template-columns: repeat(4, 1fr); }
}
.v-tile { display: grid; gap: .1rem; background: var(--white); border: 1px solid var(--line); border-radius: 14px; padding: 1rem 1.1rem; }
.v-tile strong { font-size: 2rem; line-height: 1.1; color: var(--navy); }
.v-tile .muted { font-size: .85rem; }
.v-label { font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.v-tile:first-child strong::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: #16a34a; margin-right: .5rem; vertical-align: middle; box-shadow: 0 0 0 4px #dcfce7; }
.v-title { font-size: 1.1rem; margin-bottom: 1rem; }
.v-title .muted { font-size: .85rem; font-weight: 400; margin-left: .35rem; }

.v-chart { position: relative; height: 220px; padding: 0 0 22px 34px; }
.v-grid { position: absolute; inset: 0 0 22px 34px; display: flex; flex-direction: column; justify-content: space-between; }
.v-grid span { position: relative; border-top: 1px solid var(--line); }
.v-grid span:last-child { border-top-color: #c4ccd8; }
.v-grid span::before { content: attr(data-v); position: absolute; left: -34px; top: -.6em; width: 28px; text-align: right; font-size: .75rem; color: var(--muted); }
.v-bars { position: relative; display: flex; gap: 2px; height: 100%; align-items: flex-end; }
.v-col { position: relative; flex: 1; height: 100%; display: flex; align-items: flex-end; justify-content: center; outline: none; }
.v-bar { width: min(100%, 18px); background: var(--blue); border-radius: 4px 4px 0 0; min-height: 0; transition: background .15s; }
.v-col:hover .v-bar, .v-col:focus .v-bar { background: var(--navy); }
.v-day { position: absolute; bottom: -22px; font-size: .72rem; color: var(--muted); white-space: nowrap; }
.v-col:hover::after, .v-col:focus::after {
  content: attr(data-tip); position: absolute; bottom: calc(100% + 6px); left: 50%; transform: translateX(-50%); z-index: 5;
  background: var(--navy); color: var(--white); font-size: .8rem; font-weight: 600; padding: .35rem .6rem; border-radius: 8px; white-space: nowrap;
}
.v-col:hover::after { bottom: auto; top: 0; }
.v-table { margin-top: 1rem; font-size: .9rem; }
.v-table summary { cursor: pointer; color: var(--blue); font-weight: 600; }
.v-table table { margin-top: .5rem; }

.v-grid-2 { display: grid; gap: 1rem; }
@media (min-width: 900px) {
  .v-grid-2 { grid-template-columns: 1.3fr 1fr; }
}
.v-compact th, .v-compact td { padding: .55rem .75rem; }
.v-list { display: grid; gap: .6rem; }
.v-list li { display: grid; grid-template-columns: minmax(90px, 1fr) 2fr auto; gap: .75rem; align-items: center; font-size: .92rem; }
.v-meter { height: 8px; border-radius: 99px; background: var(--soft); overflow: hidden; }
.v-meter span { display: block; height: 100%; border-radius: 99px; background: var(--blue); }
.v-list strong { color: var(--navy); min-width: 2.5em; text-align: right; }

.acad-footer { padding-top: 0; }

/* Certificate (standalone page) */
.cert-page { margin: 0; background: #eef3fa; font-family: "Inter", system-ui, sans-serif; color: #2b2f36; }
.cert-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: .75rem 1.5rem; padding: 18px; }
.cert-actions a, .cert-actions button {
  display: inline-flex; gap: .4rem; align-items: center; font: inherit; font-weight: 600;
  color: #1565c0; background: none; border: 0; cursor: pointer; text-decoration: none;
}
.certificate { max-width: 980px; margin: 0 auto 40px; padding: 0 16px; }
.cert-inner {
  position: relative; background: #fff; text-align: center; padding: 48px 32px;
  border: 10px solid #0f2444; outline: 2px solid #f59e0b; outline-offset: -22px;
}
.cert-inner img { margin: 0 auto 8px; }
.cert-org { font-weight: 700; letter-spacing: .3em; color: #0f2444; margin: 0; }
.cert-label { font-size: .9rem; letter-spacing: .25em; text-transform: uppercase; color: #b45309; margin: .5rem 0 2rem; }
.cert-small { color: #5b6270; margin: .5rem 0; }
.cert-inner h1 { font-size: clamp(2rem, 6vw, 3.2rem); color: #0f2444; margin: .25rem 0 .5rem; border-bottom: 2px solid #e3e8ef; display: inline-block; padding: 0 1rem .25rem; }
.cert-inner h2 { font-size: clamp(1.3rem, 3.5vw, 1.9rem); color: #1565c0; margin: .25rem 0; }
.cert-footer { display: flex; flex-wrap: wrap; justify-content: space-around; gap: 1rem; margin-top: 2.5rem; }
.cert-footer div { display: grid; min-width: 160px; }
.cert-footer strong { color: #0f2444; border-bottom: 1px solid #c4ccd8; padding-bottom: .3rem; }
.cert-footer span { font-size: .8rem; color: #5b6270; padding-top: .3rem; }
.cert-verify { font-size: .75rem; color: #5b6270; margin: 2rem 0 0; }
@media print {
  .cert-actions { display: none; }
  .cert-page { background: #fff; }
  .certificate { margin: 0; padding: 0; }
  @page { size: landscape; margin: 10mm; }
}