/* =========================================================
   The Bogen Method — Interactive Course
   Edmund Bogen Team brand: navy #0d2540 / #1a3e5c / cyan #00a8e1
   ========================================================= */

:root {
  --navy-950: #08172a;
  --navy-900: #0d2540;
  --navy-800: #133356;
  --navy-700: #1a3e5c;
  --navy-600: #234e74;
  --navy-500: #2f6593;
  --ink: #0a1a2e;
  --ink-2: #1a2842;
  --paper: #ffffff;
  --paper-soft: #f6f8fb;
  --paper-warm: #f1f4f8;
  --line: #dde3ec;
  --line-strong: #c5cfdc;
  --muted: #6b7a90;
  --muted-2: #94a3b8;
  --text: #0a1a2e;
  --text-2: #2a3a52;

  --cyan: #00a8e1;
  --cyan-bright: #1bb6e8;
  --cyan-dark: #0080ab;
  --cyan-glow: rgba(0, 168, 225, 0.35);

  --gold: #e6b450;
  --green: #2ec27e;
  --red: #e35d6a;
  --purple: #8b6cef;
  --orange: #f08a3e;

  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 18px;
  --radius-xl: 28px;

  --shadow-sm: 0 1px 2px rgba(13, 37, 64, 0.08), 0 2px 6px rgba(13, 37, 64, 0.04);
  --shadow: 0 4px 16px rgba(13, 37, 64, 0.08), 0 12px 32px rgba(13, 37, 64, 0.06);
  --shadow-lg: 0 20px 60px rgba(13, 37, 64, 0.18), 0 4px 12px rgba(13, 37, 64, 0.06);
  --shadow-glow: 0 0 0 1px var(--cyan), 0 0 24px var(--cyan-glow);

  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --t-fast: 160ms cubic-bezier(0.4, 0, 0.2, 1);
  --t-mid: 280ms cubic-bezier(0.4, 0, 0.2, 1);
  --t-slow: 480ms cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--paper-soft);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}
a {
  color: var(--navy-700);
  text-decoration: none;
}
a:hover {
  color: var(--cyan);
}
input,
textarea {
  font-family: inherit;
  color: inherit;
}

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

/* ============================ TYPOGRAPHY ============================ */
h1,
h2,
h3,
h4 {
  margin: 0 0 0.4em;
  letter-spacing: -0.02em;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.15;
}
h1 {
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  font-weight: 800;
}
h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
}
h3 {
  font-size: 1.25rem;
}
h4 {
  font-size: 1.05rem;
}
p {
  margin: 0 0 1em;
}
.muted {
  color: var(--muted);
}
.eyebrow {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 600;
  color: var(--cyan);
}

/* ============================ ENROLL GATE ============================ */
.screen--gate {
  position: fixed;
  inset: 0;
  background: linear-gradient(160deg, #061528 0%, #0d2540 55%, #133356 100%);
  color: #fff;
  overflow: auto;
  z-index: 100;
}
.screen--gate.hidden {
  display: none;
}
.gate-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.gate-grid {
  position: absolute;
  inset: -2px;
  background-image:
    linear-gradient(to right, rgba(0, 168, 225, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 168, 225, 0.07) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 30%, transparent 80%);
}
.gate-glow {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 1200px;
  height: 1200px;
  background: radial-gradient(circle, var(--cyan-glow) 0%, transparent 60%);
  opacity: 0.45;
  filter: blur(40px);
}
.gate-inner {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 80px;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}
@media (max-width: 920px) {
  .gate-inner {
    grid-template-columns: 1fr;
  }
}
.gate-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: clamp(28px, 4vw, 48px);
  backdrop-filter: blur(20px);
}
.gate-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}
.gate-brand .logo-mark {
  width: 56px;
  height: 56px;
  color: var(--cyan);
  flex-shrink: 0;
}
.gate-brand .eyebrow {
  margin-bottom: 4px;
}
.gate-brand .brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.badge-row {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.pill {
  display: inline-flex;
  align-items: center;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.85);
}
.pill--accent {
  background: var(--cyan);
  color: var(--navy-900);
  box-shadow: 0 0 20px var(--cyan-glow);
}
.gate-title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1;
  margin: 0 0 16px;
  background: linear-gradient(180deg, #fff 0%, rgba(255, 255, 255, 0.72) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.gate-title-trade {
  font-size: 0.4em;
  vertical-align: super;
  color: var(--cyan);
  -webkit-text-fill-color: var(--cyan);
}
.gate-tagline {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.78);
  max-width: 56ch;
  margin: 0 0 28px;
  line-height: 1.55;
}
.gate-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 0 0 32px;
  padding: 0;
}
.gate-stats li {
  text-align: center;
  padding: 14px 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
}
.gate-stats strong {
  display: block;
  font-size: 1.4rem;
  color: var(--cyan);
  font-weight: 700;
}
.gate-stats li {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.7);
}
.gate-form {
  margin-bottom: 16px;
}
.form-row {
  margin-bottom: 14px;
}
.form-row label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.03em;
}
.form-row--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 540px) {
  .form-row--split {
    grid-template-columns: 1fr;
  }
}
.gate-form input[type="text"],
.gate-form input[type="email"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(0, 0, 0, 0.25);
  color: #fff;
  font-size: 0.95rem;
  transition: border var(--t-fast), box-shadow var(--t-fast);
}
.gate-form input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}
.gate-form input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 168, 225, 0.25);
}
.gate-form input[aria-invalid="true"] {
  border-color: var(--red);
}
.checkbox-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 20px;
  line-height: 1.45;
  cursor: pointer;
}
.checkbox-row input {
  margin-top: 4px;
  accent-color: var(--cyan);
}
.gate-fineprint {
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
  margin: 0;
}
.link-btn {
  color: var(--cyan);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.link-btn:hover {
  color: var(--cyan-bright);
}
.gate-quote {
  background: linear-gradient(180deg, rgba(0, 168, 225, 0.08) 0%, rgba(0, 0, 0, 0) 100%);
  border: 1px solid rgba(0, 168, 225, 0.2);
  border-radius: var(--radius-xl);
  padding: 36px;
  position: relative;
}
.gate-quote-mark {
  position: absolute;
  top: -32px;
  left: 24px;
  font-size: 7rem;
  font-weight: 800;
  color: var(--cyan);
  opacity: 0.4;
  line-height: 1;
}
.gate-quote blockquote {
  margin: 0 0 20px;
  font-size: 1.25rem;
  line-height: 1.4;
  font-weight: 500;
  color: #fff;
}
.gate-quote cite {
  font-style: normal;
  display: block;
}
.gate-quote cite strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 2px;
}
.gate-quote cite span {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.6);
}
.gate-quote-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.gate-quote-stats > div strong {
  display: block;
  font-size: 1.3rem;
  color: var(--cyan);
  font-weight: 700;
}
.gate-quote-stats > div span {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.55);
}

/* ============================ BUTTONS ============================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  transition: all var(--t-fast);
  border: 1px solid transparent;
  white-space: nowrap;
  user-select: none;
}
.btn--primary {
  background: var(--cyan);
  color: var(--navy-900);
  box-shadow: 0 4px 14px rgba(0, 168, 225, 0.35);
}
.btn--primary:hover {
  background: var(--cyan-bright);
  transform: translateY(-1px);
  box-shadow: 0 6px 22px rgba(0, 168, 225, 0.5);
}
.btn--primary:active {
  transform: translateY(0);
}
.btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}
.btn--ghost:hover {
  border-color: var(--navy-700);
  color: var(--navy-700);
}
.btn--dark {
  background: var(--navy-900);
  color: #fff;
}
.btn--dark:hover {
  background: var(--navy-700);
}
.btn--full {
  width: 100%;
  padding: 14px 22px;
  font-size: 1rem;
}
.btn--lg {
  padding: 16px 28px;
  font-size: 1.05rem;
}
.btn--sm {
  padding: 8px 14px;
  font-size: 0.82rem;
}
.btn-arrow {
  transition: transform var(--t-fast);
}
.btn:hover .btn-arrow {
  transform: translateX(3px);
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ============================ TOP BAR ============================ */
.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(13, 37, 64, 0.97);
  color: #fff;
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.topbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.topbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}
.topbar-brand:hover {
  color: var(--cyan);
}
.topbar-logo {
  width: 32px;
  height: 32px;
  color: var(--cyan);
}
.topbar-brand span {
  font-size: 0.95rem;
}
.topbar-nav {
  display: flex;
  gap: 4px;
  flex: 1;
  margin-left: 16px;
  overflow-x: auto;
  scrollbar-width: none;
}
.topbar-nav::-webkit-scrollbar {
  display: none;
}
.topbar-nav a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: all var(--t-fast);
}
.topbar-nav a:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}
.topbar-nav a.active {
  color: var(--cyan);
  background: rgba(0, 168, 225, 0.1);
}
.topbar-user {
  display: flex;
  align-items: center;
  gap: 14px;
  position: relative;
}
.hud {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: rgba(0, 0, 0, 0.25);
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.hud-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0 4px;
}
.hud-label {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
}
.hud-value {
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.hud-item--xp {
  position: relative;
  padding-right: 60px;
}
.hud-xpbar {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 5px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  overflow: hidden;
}
.hud-xpbar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan-dark), var(--cyan));
  width: 0;
  transition: width var(--t-slow);
  box-shadow: 0 0 8px var(--cyan-glow);
}
.hud-flame {
  font-size: 0.85rem;
}
.hud-item--streak .hud-value {
  color: var(--gold);
}
@media (max-width: 720px) {
  .hud {
    display: none;
  }
}
.user-menu-btn {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: var(--cyan);
  color: var(--navy-900);
  font-weight: 700;
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.user-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  background: #fff;
  color: var(--text);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  min-width: 240px;
  padding: 6px;
  z-index: 30;
}
.user-menu-head {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
}
.user-menu-head div:first-child {
  font-weight: 700;
}
.user-menu-head div + div {
  font-size: 0.82rem;
}
.user-menu button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 9px 12px;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
  color: var(--text);
}
.user-menu button:hover {
  background: var(--paper-soft);
}
.user-menu button.danger {
  color: var(--red);
}
.topbar-progress {
  height: 3px;
  background: rgba(255, 255, 255, 0.06);
  position: relative;
}
.topbar-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan-dark), var(--cyan), var(--cyan-bright));
  width: 0;
  transition: width var(--t-slow);
  box-shadow: 0 0 10px var(--cyan-glow);
}
@media (max-width: 760px) {
  .topbar-nav {
    font-size: 0.8rem;
  }
  .topbar-brand span {
    display: none;
  }
}

/* ============================ VIEW (main content area) ============================ */
.view {
  flex: 1;
  max-width: 1180px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 24px 80px;
}
@media (max-width: 540px) {
  .view {
    padding: 20px 16px 60px;
  }
}

/* ============================ HOME / DASHBOARD ============================ */
.welcome {
  background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 100%);
  color: #fff;
  border-radius: var(--radius-xl);
  padding: clamp(28px, 5vw, 48px);
  margin-bottom: 32px;
  position: relative;
  overflow: hidden;
}
.welcome::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, var(--cyan-glow) 0%, transparent 70%);
  filter: blur(40px);
}
.welcome-eyebrow {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--cyan);
  font-weight: 600;
  margin-bottom: 12px;
}
.welcome h1 {
  color: #fff;
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin-bottom: 8px;
}
.welcome p {
  color: rgba(255, 255, 255, 0.75);
  max-width: 60ch;
  font-size: 1.02rem;
}
.welcome-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  margin-top: 28px;
  position: relative;
  z-index: 1;
}
.welcome-stat {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.welcome-stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 4px;
}
.welcome-stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.welcome-stat-value .accent {
  color: var(--cyan);
}
.welcome-cta {
  margin-top: 28px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin: 48px 0 18px;
  gap: 16px;
}
.section-head h2 {
  margin: 0;
}
.section-head p {
  color: var(--muted);
  margin: 0;
  font-size: 0.92rem;
}

.episode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}
.episode-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all var(--t-mid);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.episode-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--cyan);
  transform: scaleY(0.3);
  transform-origin: top;
  transition: transform var(--t-mid);
}
.episode-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--navy-700);
}
.episode-card:hover::before {
  transform: scaleY(1);
}
.episode-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.08em;
}
.episode-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.2;
}
.episode-desc {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0;
  line-height: 1.5;
  flex-grow: 1;
}
.episode-progress {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--muted);
}
.episode-progress-bar {
  flex: 1;
  height: 6px;
  background: var(--paper-warm);
  border-radius: 999px;
  overflow: hidden;
}
.episode-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan-dark), var(--cyan));
  transition: width var(--t-slow);
}
.episode-meta {
  display: flex;
  gap: 14px;
  font-size: 0.78rem;
  color: var(--muted);
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.episode-meta strong {
  color: var(--text);
  font-weight: 600;
}

/* ============================ DASHBOARD PANELS ============================ */
.dash-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  margin: 32px 0;
}
@media (max-width: 880px) {
  .dash-grid {
    grid-template-columns: 1fr;
  }
}
.panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.panel--dark {
  background: var(--navy-900);
  color: #fff;
  border: none;
}
.panel--dark h3 {
  color: #fff;
}
.panel h3 {
  margin-top: 0;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.panel-eyebrow {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 600;
  color: var(--cyan);
  margin-bottom: 8px;
}

/* mission of the day */
.mission {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px dashed var(--cyan);
  background: rgba(0, 168, 225, 0.04);
  margin-top: 12px;
}
.mission-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 12px;
  background: var(--cyan);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}
.mission-text strong {
  display: block;
  font-size: 0.95rem;
}
.mission-text span {
  font-size: 0.82rem;
  color: var(--muted);
}

/* leaderboard / cohort stat */
.cohort {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 8px;
}
.cohort-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
}
.cohort-row .name {
  width: 110px;
  color: rgba(255, 255, 255, 0.7);
}
.cohort-row.me .name {
  color: var(--cyan);
  font-weight: 700;
}
.cohort-bar {
  flex: 1;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  overflow: hidden;
}
.cohort-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan-dark), var(--cyan));
  border-radius: 999px;
  transition: width var(--t-slow);
}
.cohort-row.me .cohort-bar-fill {
  background: linear-gradient(90deg, var(--gold), #ffd278);
}
.cohort-row .xp {
  width: 60px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

/* ============================ EPISODE PAGE ============================ */
.ep-hero {
  background: linear-gradient(135deg, var(--navy-900), var(--navy-700));
  color: #fff;
  padding: clamp(28px, 4vw, 44px);
  border-radius: var(--radius-xl);
  margin-bottom: 32px;
  position: relative;
  overflow: hidden;
}
.ep-hero-eyebrow {
  font-size: 0.74rem;
  letter-spacing: 0.15em;
  color: var(--cyan);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.ep-hero h1 {
  color: #fff;
}
.ep-hero p {
  max-width: 60ch;
  color: rgba(255, 255, 255, 0.78);
}

.lesson-list {
  display: grid;
  gap: 12px;
}
.lesson-row {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: grid;
  grid-template-columns: 36px 1fr auto;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  transition: all var(--t-fast);
}
.lesson-row:hover {
  border-color: var(--navy-700);
  transform: translateX(2px);
}
.lesson-row.locked {
  opacity: 0.55;
  cursor: not-allowed;
}
.lesson-row.locked:hover {
  transform: none;
  border-color: var(--line);
}
.lesson-row.done {
  background: linear-gradient(to right, rgba(46, 194, 126, 0.05), #fff);
}
.lesson-num {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: var(--paper-warm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--muted);
}
.lesson-row.done .lesson-num {
  background: var(--green);
  color: #fff;
}
.lesson-row.active .lesson-num {
  background: var(--cyan);
  color: #fff;
}
.lesson-title {
  font-weight: 600;
  font-size: 0.98rem;
  margin: 0;
}
.lesson-meta {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 2px;
}
.lesson-xp {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--cyan);
  background: rgba(0, 168, 225, 0.08);
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

/* ============================ LESSON PAGE ============================ */
.lesson-wrap {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 36px;
}
@media (max-width: 880px) {
  .lesson-wrap {
    grid-template-columns: 1fr;
  }
  .lesson-side {
    position: static !important;
  }
}
.lesson-side {
  position: sticky;
  top: 80px;
  align-self: start;
  height: max-content;
}
.lesson-side-back {
  font-size: 0.85rem;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 24px;
}
.lesson-side-eyebrow {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--cyan);
  font-weight: 600;
  margin-bottom: 8px;
}
.lesson-side-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 6px;
}
.lesson-side h2 {
  font-size: 1.3rem;
  line-height: 1.2;
  margin-bottom: 16px;
}
.lesson-toc {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  border-left: 2px solid var(--line);
}
.lesson-toc li {
  padding: 6px 0 6px 14px;
  font-size: 0.85rem;
  color: var(--muted);
  position: relative;
  cursor: pointer;
  transition: color var(--t-fast);
}
.lesson-toc li:hover {
  color: var(--navy-700);
}
.lesson-toc li.active {
  color: var(--cyan);
  font-weight: 600;
}
.lesson-toc li.active::before {
  content: "";
  position: absolute;
  left: -2px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--cyan);
}

.lesson-main {
  min-width: 0;
}
.lesson-main h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
}
.lesson-section {
  margin: 32px 0;
}
.lesson-section h3 {
  font-size: 1.3rem;
  margin-bottom: 14px;
}
.lesson-main p {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-2);
  max-width: 65ch;
}
.lesson-main ul,
.lesson-main ol {
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--text-2);
  max-width: 65ch;
}
.lesson-main strong {
  color: var(--ink);
}
.lesson-main code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--paper-warm);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--navy-800);
}

.callout {
  border-left: 4px solid var(--cyan);
  background: rgba(0, 168, 225, 0.05);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  margin: 20px 0;
}
.callout--warn {
  border-color: var(--orange);
  background: rgba(240, 138, 62, 0.06);
}
.callout--danger {
  border-color: var(--red);
  background: rgba(227, 93, 106, 0.06);
}
.callout--success {
  border-color: var(--green);
  background: rgba(46, 194, 126, 0.06);
}
.callout strong {
  display: block;
  margin-bottom: 4px;
  font-size: 0.92rem;
}
.callout p {
  margin: 0;
  font-size: 0.92rem;
}

/* ============================ INTERACTIVE: TERMINAL ============================ */
.terminal {
  background: #050b14;
  color: #d6e7f5;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.55;
  overflow: hidden;
  border: 1px solid #11253f;
  margin: 16px 0;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}
.terminal-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: #0a1828;
  border-bottom: 1px solid #11253f;
}
.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: #4b5b70;
}
.terminal-dot:nth-child(1) {
  background: #ff5f57;
}
.terminal-dot:nth-child(2) {
  background: #febc2e;
}
.terminal-dot:nth-child(3) {
  background: #28c840;
}
.terminal-title {
  margin-left: 10px;
  font-size: 0.78rem;
  color: #7a8da3;
  letter-spacing: 0.04em;
}
.terminal-body {
  padding: 16px 18px;
  min-height: 200px;
  max-height: 460px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
.terminal-line {
  display: block;
  animation: termfade 0.3s ease-out;
}
@keyframes termfade {
  from {
    opacity: 0;
    transform: translateY(2px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
.term-prompt {
  color: var(--cyan);
}
.term-cmd {
  color: #ffffff;
}
.term-out {
  color: #b8c8da;
}
.term-claude {
  color: #a8c5e6;
}
.term-good {
  color: #6ee19b;
}
.term-err {
  color: #ff7a7a;
}
.term-dim {
  color: #5d738f;
}
.term-input-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 18px 14px;
}
.term-input-prompt {
  color: var(--cyan);
}
.term-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  caret-color: var(--cyan);
}
.term-cursor {
  display: inline-block;
  width: 8px;
  height: 1.1em;
  background: var(--cyan);
  vertical-align: middle;
  animation: cursor 1s steps(1) infinite;
}
@keyframes cursor {
  50% {
    background: transparent;
  }
}
.term-hint {
  padding: 8px 18px;
  background: rgba(0, 168, 225, 0.08);
  border-top: 1px solid #11253f;
  font-size: 0.78rem;
  color: var(--cyan);
}
.term-hint code {
  background: rgba(0, 168, 225, 0.15);
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 0.82em;
}

/* ============================ PROMPT BLOCK ============================ */
.prompt-block {
  background: var(--navy-900);
  color: #cfdcec;
  border-radius: var(--radius);
  padding: 0;
  margin: 16px 0;
  border: 1px solid var(--navy-700);
  overflow: hidden;
}
.prompt-block-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--navy-700);
  font-size: 0.78rem;
  background: var(--navy-800);
}
.prompt-block-label {
  color: var(--cyan);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.prompt-block-actions {
  display: flex;
  gap: 6px;
}
.prompt-block pre {
  margin: 0;
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 380px;
  overflow-y: auto;
}
.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #cfdcec;
  border-radius: var(--radius-sm);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: all var(--t-fast);
}
.icon-btn:hover {
  background: rgba(0, 168, 225, 0.15);
  border-color: var(--cyan);
  color: #fff;
}
.icon-btn.copied {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

/* ============================ QUIZ ============================ */
.quiz {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 24px 0;
  position: relative;
}
.quiz-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.quiz-eyebrow {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--cyan);
  font-weight: 700;
}
.quiz-progress {
  font-size: 0.82rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.quiz-combo {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  background: var(--gold);
  color: var(--navy-900);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  margin-left: 8px;
  animation: pop 0.4s ease-out;
}
@keyframes pop {
  0% {
    transform: scale(0.4);
    opacity: 0;
  }
  60% {
    transform: scale(1.15);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}
.quiz-timer {
  display: flex;
  align-items: center;
  gap: 8px;
}
.quiz-timer-bar {
  width: 100px;
  height: 5px;
  background: var(--paper-warm);
  border-radius: 999px;
  overflow: hidden;
}
.quiz-timer-fill {
  height: 100%;
  background: var(--green);
  width: 100%;
  transition: width 1s linear, background-color var(--t-fast);
}
.quiz-timer-fill.warn {
  background: var(--orange);
}
.quiz-timer-fill.danger {
  background: var(--red);
}
.quiz-question {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 20px;
}
.quiz-options {
  display: grid;
  gap: 10px;
}
.quiz-option {
  text-align: left;
  width: 100%;
  background: #fff;
  border: 2px solid var(--line);
  padding: 14px 16px;
  border-radius: var(--radius);
  font-size: 0.96rem;
  cursor: pointer;
  transition: all var(--t-fast);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  line-height: 1.45;
}
.quiz-option:hover:not(:disabled) {
  border-color: var(--navy-700);
  background: var(--paper-soft);
}
.quiz-option .quiz-key {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  background: var(--paper-warm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.78rem;
  font-family: var(--font-mono);
}
.quiz-option.correct {
  border-color: var(--green);
  background: rgba(46, 194, 126, 0.08);
}
.quiz-option.correct .quiz-key {
  background: var(--green);
  color: #fff;
}
.quiz-option.wrong {
  border-color: var(--red);
  background: rgba(227, 93, 106, 0.08);
}
.quiz-option.wrong .quiz-key {
  background: var(--red);
  color: #fff;
}
.quiz-option:disabled {
  cursor: not-allowed;
}
.quiz-feedback {
  margin-top: 16px;
  padding: 14px 16px;
  background: var(--paper-warm);
  border-radius: var(--radius);
  font-size: 0.92rem;
  animation: slideUp 0.3s ease-out;
}
.quiz-feedback strong {
  display: block;
  margin-bottom: 4px;
}
.quiz-feedback.correct {
  background: rgba(46, 194, 126, 0.08);
  color: #1f7a4e;
}
.quiz-feedback.wrong {
  background: rgba(227, 93, 106, 0.08);
  color: #a8323e;
}
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
.quiz-next {
  margin-top: 18px;
  text-align: right;
}

.quiz-result {
  text-align: center;
  padding: 12px;
}
.quiz-result-score {
  font-size: 3rem;
  font-weight: 800;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}
.quiz-result-stars {
  display: flex;
  justify-content: center;
  gap: 6px;
  font-size: 1.6rem;
  margin: 8px 0 16px;
}
.quiz-star {
  color: var(--line);
  transition: all var(--t-mid);
}
.quiz-star.on {
  color: var(--gold);
  animation: starpop 0.4s ease-out;
}
@keyframes starpop {
  from {
    transform: scale(0) rotate(-60deg);
  }
  to {
    transform: scale(1) rotate(0);
  }
}

/* ============================ CTFC DRAG BUILDER ============================ */
.ctfc {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 24px 0;
}
.ctfc-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 16px 0;
}
@media (max-width: 640px) {
  .ctfc-cols {
    grid-template-columns: 1fr;
  }
}
.ctfc-pool,
.ctfc-slots {
  background: var(--paper-soft);
  border-radius: var(--radius);
  padding: 14px;
  min-height: 240px;
}
.ctfc-pool h4,
.ctfc-slots h4 {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
}
.ctfc-chip {
  display: block;
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.88rem;
  margin-bottom: 8px;
  cursor: grab;
  user-select: none;
  transition: all var(--t-fast);
}
.ctfc-chip:hover {
  border-color: var(--cyan);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.ctfc-chip.dragging {
  opacity: 0.4;
}
.ctfc-chip.placed {
  display: none;
}
.ctfc-slot {
  background: #fff;
  border: 2px dashed var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 10px;
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all var(--t-fast);
}
.ctfc-slot.over {
  border-color: var(--cyan);
  background: rgba(0, 168, 225, 0.05);
}
.ctfc-slot.filled {
  border-style: solid;
  background: var(--paper-warm);
}
.ctfc-slot-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cyan);
  background: rgba(0, 168, 225, 0.1);
  padding: 4px 8px;
  border-radius: 4px;
}
.ctfc-slot.filled .ctfc-slot-content {
  font-size: 0.88rem;
}
.ctfc-result {
  background: var(--navy-900);
  color: #cfdcec;
  border-radius: var(--radius);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  margin-top: 16px;
  min-height: 80px;
}
.ctfc-result em {
  color: var(--muted-2);
  font-style: normal;
}

/* ============================ SLASH FORGE ============================ */
.forge {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 24px 0;
}
.forge-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 760px) {
  .forge-grid {
    grid-template-columns: 1fr;
  }
}
.forge-field {
  margin-bottom: 14px;
}
.forge-field label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cyan);
  margin-bottom: 6px;
}
.forge-field input,
.forge-field textarea,
.forge-field select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  background: #fff;
  transition: border var(--t-fast);
}
.forge-field input:focus,
.forge-field textarea:focus,
.forge-field select:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 168, 225, 0.15);
}
.forge-field textarea {
  min-height: 80px;
  resize: vertical;
  font-family: inherit;
}
.forge-checks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}
.forge-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  padding: 8px 10px;
  background: var(--paper-soft);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.forge-check input {
  accent-color: var(--cyan);
}
.forge-preview {
  background: var(--navy-900);
  border-radius: var(--radius);
  padding: 16px;
  color: #cfdcec;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.55;
  max-height: 380px;
  overflow-y: auto;
  white-space: pre-wrap;
}

/* ============================ MISSION SCREEN ============================ */
.mission-screen {
  background: linear-gradient(135deg, var(--navy-900), #1a1f3d);
  color: #fff;
  border-radius: var(--radius-xl);
  padding: clamp(28px, 5vw, 48px);
  position: relative;
  overflow: hidden;
}
.mission-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 80% 20%, rgba(0, 168, 225, 0.18), transparent 50%);
}
.mission-screen > * {
  position: relative;
}
.mission-screen h1 {
  color: #fff;
}
.mission-screen p {
  color: rgba(255, 255, 255, 0.78);
  max-width: 60ch;
}
.mission-objectives {
  list-style: none;
  padding: 0;
  margin: 28px 0;
  display: grid;
  gap: 10px;
}
.mission-objectives li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.92);
}
.mission-objectives li strong {
  color: #ffffff;
  display: block;
  margin-bottom: 4px;
  font-size: 0.98rem;
}
.mission-objectives li label,
.mission-objectives li > div {
  color: rgba(255, 255, 255, 0.85);
}
.mission-objectives li .obj-check {
  width: 22px;
  height: 22px;
  border-radius: 999px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.8rem;
}
.mission-objectives li.done {
  background: rgba(46, 194, 126, 0.1);
  border-color: var(--green);
}
.mission-objectives li.done .obj-check {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

/* ============================ BADGE / ACHIEVEMENT ============================ */
.badge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 16px;
}
.badge {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
  position: relative;
  transition: all var(--t-mid);
}
.badge.locked {
  opacity: 0.45;
  filter: grayscale(1);
}
.badge:not(.locked):hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.badge-icon {
  width: 76px;
  height: 76px;
  border-radius: 999px;
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  background: linear-gradient(135deg, var(--cyan-dark), var(--cyan));
  color: #fff;
  box-shadow: 0 6px 18px rgba(0, 168, 225, 0.3);
}
.badge.b-gold .badge-icon {
  background: linear-gradient(135deg, #c08a30, var(--gold));
  box-shadow: 0 6px 18px rgba(230, 180, 80, 0.4);
}
.badge.b-purple .badge-icon {
  background: linear-gradient(135deg, #6a4ed4, var(--purple));
  box-shadow: 0 6px 18px rgba(139, 108, 239, 0.4);
}
.badge.b-green .badge-icon {
  background: linear-gradient(135deg, #1e9a5e, var(--green));
}
.badge.b-red .badge-icon {
  background: linear-gradient(135deg, #b73e4a, var(--red));
}
.badge h4 {
  font-size: 0.98rem;
  margin: 0 0 4px;
}
.badge p {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0;
  line-height: 1.4;
}

/* badge overlay (full screen unlock) */
.badge-overlay[hidden] {
  display: none !important;
}
.badge-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(8, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadein 0.3s ease-out;
}
@keyframes fadein {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
.badge-overlay-inner {
  text-align: center;
  color: #fff;
  position: relative;
  padding: 40px 24px;
  max-width: 480px;
}
.badge-overlay-rays {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 600px;
  height: 600px;
  transform: translate(-50%, -50%);
  background: conic-gradient(
    from 0deg,
    transparent 0deg,
    rgba(0, 168, 225, 0.2) 5deg,
    transparent 10deg,
    transparent 30deg,
    rgba(0, 168, 225, 0.18) 40deg,
    transparent 50deg,
    transparent 80deg,
    rgba(0, 168, 225, 0.16) 90deg,
    transparent 100deg
  );
  animation: spin 12s linear infinite;
  z-index: 0;
  filter: blur(2px);
}
@keyframes spin {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}
.badge-overlay-icon {
  position: relative;
  z-index: 1;
  width: 140px;
  height: 140px;
  border-radius: 999px;
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  background: linear-gradient(135deg, var(--cyan-dark), var(--cyan));
  box-shadow: 0 0 50px var(--cyan-glow), 0 20px 60px rgba(0, 0, 0, 0.4);
  animation: bounce 0.7s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes bounce {
  0% {
    transform: scale(0) rotate(-180deg);
    opacity: 0;
  }
  60% {
    transform: scale(1.15) rotate(10deg);
  }
  100% {
    transform: scale(1) rotate(0);
    opacity: 1;
  }
}
.badge-overlay-label {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  font-weight: 700;
  position: relative;
  z-index: 1;
}
.badge-overlay-name {
  font-size: 2rem;
  font-weight: 800;
  margin: 8px 0;
  position: relative;
  z-index: 1;
}
.badge-overlay-desc {
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
  font-size: 1rem;
  line-height: 1.5;
}
.badge-overlay-inner .btn {
  position: relative;
  z-index: 1;
}

/* ============================ XP STAGE (floating numbers) ============================ */
.xp-stage {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 150;
}
.xp-pop {
  position: absolute;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--cyan);
  text-shadow: 0 2px 8px rgba(0, 168, 225, 0.5);
  animation: xpfly 1.4s ease-out forwards;
}
@keyframes xpfly {
  0% {
    opacity: 0;
    transform: translateY(0) scale(0.6);
  }
  20% {
    opacity: 1;
    transform: translateY(-10px) scale(1.1);
  }
  100% {
    opacity: 0;
    transform: translateY(-80px) scale(1);
  }
}

/* ============================ TOAST ============================ */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--navy-900);
  color: #fff;
  padding: 12px 20px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 160;
  opacity: 0;
  transition: all var(--t-mid);
  pointer-events: none;
  max-width: 90vw;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.toast.success {
  background: var(--green);
}
.toast.error {
  background: var(--red);
}

/* ============================ MODAL ============================ */
.modal[hidden] {
  display: none !important;
}
.modal {
  position: fixed;
  inset: 0;
  z-index: 180;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 23, 42, 0.75);
  backdrop-filter: blur(6px);
}
.modal-panel {
  position: relative;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 540px;
  width: 90vw;
  max-height: 86vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: modalin 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes modalin {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(10px);
  }
}
.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  font-size: 1.4rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.modal-close:hover {
  background: var(--paper-soft);
  color: var(--ink);
}

/* ============================ VAULT / PROMPT LIBRARY ============================ */
.vault-row {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 10px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: center;
}
.vault-row h4 {
  margin: 0;
  font-size: 0.96rem;
}
.vault-row .vault-meta {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 2px;
}

/* ============================ ROI CALC ============================ */
.roi {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 760px) {
  .roi {
    grid-template-columns: 1fr;
  }
}
.roi-output {
  background: linear-gradient(135deg, var(--navy-900), var(--navy-700));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.roi-output .label {
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cyan);
  font-weight: 600;
}
.roi-output .big {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  color: #fff;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin: 12px 0;
}
.roi-output .sub {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}
.roi-slider-row {
  margin-bottom: 18px;
}
.roi-slider-row label {
  display: flex;
  justify-content: space-between;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.roi-slider-row .val {
  color: var(--cyan);
  font-family: var(--font-mono);
}
.roi-slider-row input[type="range"] {
  width: 100%;
  accent-color: var(--cyan);
}

/* ============================ TROUBLESHOOTER TREE ============================ */
.tree {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.tree-node {
  margin: 12px 0;
}
.tree-question {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.tree-options {
  display: grid;
  gap: 8px;
}
.tree-option {
  text-align: left;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  padding: 12px 14px;
  border-radius: var(--radius);
  font-size: 0.92rem;
  transition: all var(--t-fast);
}
.tree-option:hover {
  border-color: var(--cyan);
  background: rgba(0, 168, 225, 0.05);
}
.tree-fix {
  background: var(--green);
  color: #fff;
  padding: 18px 20px;
  border-radius: var(--radius);
  margin-top: 12px;
  animation: slideUp 0.3s ease-out;
}
.tree-fix h4 {
  color: #fff;
  margin-top: 0;
}
.tree-fix code {
  background: rgba(0, 0, 0, 0.25);
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85em;
}
.tree-back {
  margin-top: 12px;
}

/* ============================ FOOTER ============================ */
.footer {
  background: var(--navy-900);
  color: rgba(255, 255, 255, 0.6);
  padding: 32px 24px;
  margin-top: auto;
}
.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.85rem;
}
.footer-brand {
  color: #fff;
  font-weight: 700;
  margin-bottom: 2px;
}
.footer-sub {
  font-size: 0.78rem;
}
.footer-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.footer-meta a {
  color: var(--cyan);
}
.footer-meta .dot {
  opacity: 0.4;
}

/* ============================ CERTIFICATE ============================ */
.cert {
  background: linear-gradient(135deg, #fff 0%, #f6f8fb 100%);
  border: 2px solid var(--navy-900);
  border-radius: var(--radius-lg);
  padding: clamp(28px, 5vw, 56px);
  text-align: center;
  position: relative;
  overflow: hidden;
  margin: 24px 0;
}
.cert::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid var(--cyan);
  border-radius: var(--radius);
  pointer-events: none;
}
.cert-eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--cyan);
  font-weight: 600;
  margin-bottom: 8px;
}
.cert h2 {
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  margin: 0 0 28px;
}
.cert-name {
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 800;
  color: var(--navy-900);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--cyan);
  display: inline-block;
  margin: 12px 0;
  font-family: "Inter", serif;
  letter-spacing: -0.02em;
}
.cert-line {
  color: var(--muted);
  margin: 12px 0;
}
.cert-sig {
  display: flex;
  justify-content: space-around;
  margin-top: 32px;
  font-size: 0.85rem;
  color: var(--muted);
  flex-wrap: wrap;
  gap: 16px;
}
.cert-sig div {
  text-align: center;
}
.cert-sig strong {
  display: block;
  color: var(--ink);
  font-size: 0.95rem;
  margin-bottom: 2px;
  padding-top: 28px;
  border-top: 1px solid var(--muted-2);
  min-width: 180px;
}

/* ============================ MISC ============================ */
.hidden {
  display: none !important;
}
.kbd {
  font-family: var(--font-mono);
  font-size: 0.82em;
  background: var(--paper-warm);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--line);
  color: var(--ink);
}

.streak-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}
.streak-list li {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.5);
}
.streak-list li.lit {
  background: var(--cyan);
  color: var(--navy-900);
  font-weight: 700;
  box-shadow: 0 0 10px var(--cyan-glow);
}

/* scroll polish */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--muted-2);
}

/* reveal animation utility */
.fade-in {
  animation: fade 0.5s ease-out;
}
@keyframes fade {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.shake {
  animation: shake 0.3s ease-out;
}
@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  20%, 60% {
    transform: translateX(-6px);
  }
  40%, 80% {
    transform: translateX(6px);
  }
}

@media print {
  .topbar,
  .footer,
  .lesson-side,
  .btn {
    display: none !important;
  }
}