/* Investing University
   This stylesheet uses simple CSS variables so colors are easy to change later. */

:root {
  --navy: #0b1f3a;
  --navy-soft: #12335d;
  --green: #1f8a5b;
  --green-dark: #12613e;
  --gold: #f1b84b;
  --white: #ffffff;
  --paper: #f6f8f4;
  --ink: #172033;
  --muted: #657287;
  --border: #dbe3dc;
  --card: #ffffff;
  --shadow: 0 18px 45px rgba(11, 31, 58, 0.12);
}

body.dark-mode {
  --paper: #071323;
  --ink: #eef4f0;
  --muted: #b6c4d4;
  --border: #263a55;
  --card: #10243d;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 31, 58, 0.96);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.16);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px 24px;
  color: var(--white);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
  font-size: 1.05rem;
  font-weight: 800;
}

.logo-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 2px solid var(--gold);
  border-radius: 8px;
  color: var(--gold);
  font-size: 0.85rem;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 4px;
}

.nav-links a {
  padding: 8px 8px;
  border-radius: 8px;
  color: #dce7ef;
  font-size: 0.82rem;
  font-weight: 600;
  transition: background 0.2s ease, color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--navy);
  background: var(--gold);
}

.theme-toggle,
.menu-toggle {
  border: 0;
  cursor: pointer;
  font: inherit;
}

.theme-toggle {
  min-width: 72px;
  padding: 9px 12px;
  border-radius: 8px;
  color: var(--navy);
  background: var(--gold);
  font-weight: 800;
  transition: transform 0.2s ease, background 0.2s ease;
}

.theme-toggle:hover,
.primary-button:hover,
.secondary-button:hover {
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--white);
}

.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 88px 24px;
  scroll-margin-top: 92px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  align-items: center;
  gap: 44px;
  min-height: 82vh;
}

.page-hero {
  min-height: auto;
  padding-top: 96px;
  padding-bottom: 62px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.15;
}

h1 {
  max-width: 700px;
  margin-bottom: 18px;
  color: var(--navy);
  font-size: clamp(2.7rem, 8vw, 5.8rem);
  letter-spacing: 0;
}

body.dark-mode h1 {
  color: var(--white);
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(2rem, 5vw, 3.2rem);
  color: var(--navy);
}

body.dark-mode h2 {
  color: var(--white);
}

h3 {
  margin-bottom: 10px;
  font-size: 1.15rem;
}

.hero-subtitle,
.section-heading p {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.primary-button {
  color: var(--white);
  background: var(--green);
  box-shadow: 0 12px 24px rgba(31, 138, 91, 0.22);
}

.primary-button:hover {
  background: var(--green-dark);
}

.secondary-button {
  color: var(--navy);
  background: var(--gold);
}

.hero-panel,
.calculator-card,
.results-card,
.info-card,
.person-card,
.quote-card,
.warning-card,
.glossary-grid article {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.hero-panel {
  padding: 28px;
}

.panel-top,
.progress-row,
.stat-grid {
  display: grid;
  gap: 8px;
}

.panel-top {
  grid-template-columns: 1fr auto;
  align-items: center;
  margin-bottom: 26px;
}

.panel-top span,
.progress-row span,
.stat-grid span,
.results-card span,
.person-card span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
}

.panel-top strong {
  color: var(--green);
}

.progress-row {
  margin-bottom: 18px;
}

.progress-bar {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(101, 114, 135, 0.18);
}

.progress-bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--green), var(--gold));
}

.stat-grid {
  grid-template-columns: repeat(2, 1fr);
  margin-top: 26px;
}

.stat-grid div {
  padding: 16px;
  border-radius: 8px;
  background: rgba(31, 138, 91, 0.08);
}

.disclaimer-banner {
  max-width: 1180px;
  margin: 0 auto 24px;
  padding: 18px 24px;
  border-left: 6px solid var(--gold);
  background: var(--navy);
  color: var(--white);
}

.section-heading {
  margin-bottom: 38px;
}

.accent-section {
  max-width: none;
  background: linear-gradient(135deg, rgba(31, 138, 91, 0.09), rgba(241, 184, 75, 0.12));
}

.accent-section > * {
  max-width: 1132px;
  margin-left: auto;
  margin-right: auto;
}

.card-grid,
.glossary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.info-card,
.person-card,
.glossary-grid article {
  padding: 22px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.info-card:hover,
.person-card:hover,
.glossary-grid article:hover {
  transform: translateY(-5px);
  border-color: var(--green);
  box-shadow: 0 24px 60px rgba(11, 31, 58, 0.16);
}

.info-card p,
.person-card p,
.glossary-grid p,
.timeline-item p,
.results-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.8fr);
  gap: 24px;
}

.topic-list,
.mistake-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.topic-list div,
.mistake-list div {
  padding: 18px;
  border-radius: 8px;
  color: var(--navy);
  background: var(--white);
  font-weight: 800;
}

body.dark-mode .topic-list div,
body.dark-mode .mistake-list div {
  color: var(--white);
  background: var(--card);
}

.quote-card {
  display: flex;
  align-items: center;
  margin: 0;
  padding: 28px;
  border-left: 6px solid var(--gold);
  color: var(--navy);
  font-size: 1.35rem;
  font-weight: 800;
}

body.dark-mode .quote-card {
  color: var(--white);
}

.timeline {
  position: relative;
  display: grid;
  gap: 22px;
  max-width: 820px;
  margin: 0 auto;
  padding-left: 30px;
}

.timeline::before {
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 8px;
  width: 3px;
  border-radius: 999px;
  background: var(--green);
  content: "";
}

.timeline-item {
  position: relative;
  padding: 20px 22px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
}

.timeline-dot {
  position: absolute;
  top: 23px;
  left: -30px;
  width: 18px;
  height: 18px;
  border: 4px solid var(--gold);
  border-radius: 50%;
  background: var(--navy);
}

.date-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.date-grid article {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.date-grid article:hover {
  transform: translateY(-5px);
  border-color: var(--green);
}

.date-grid span {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 5px 10px;
  border-radius: 8px;
  color: var(--navy);
  background: var(--gold);
  font-size: 0.82rem;
  font-weight: 900;
}

.date-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.steps-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  font-weight: 800;
}

.steps-list span {
  display: grid;
  flex: 0 0 36px;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  color: var(--navy);
  background: var(--gold);
}

.warning-card {
  margin-top: 22px;
  padding: 22px;
  border-left: 6px solid var(--gold);
  color: var(--navy);
  font-size: 1.1rem;
  font-weight: 900;
}

body.dark-mode .warning-card {
  color: var(--white);
}

.calculator-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: 24px;
}

.calculator-card {
  display: grid;
  gap: 16px;
  padding: 24px;
}

.calculator-card label {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-weight: 800;
}

.calculator-card input {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--ink);
  background: var(--paper);
  font: inherit;
}

.calculator-card input:focus {
  outline: 3px solid rgba(31, 138, 91, 0.2);
  border-color: var(--green);
}

.results-card {
  display: grid;
  align-content: center;
  gap: 18px;
  padding: 24px;
}

.results-card div {
  padding: 18px;
  border-radius: 8px;
  background: rgba(31, 138, 91, 0.08);
}

.results-card strong {
  display: block;
  margin-top: 4px;
  color: var(--green);
  font-size: clamp(1.6rem, 5vw, 2.4rem);
}

.chart-card {
  margin-top: 24px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.chart-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.chart-heading h3 {
  margin-bottom: 0;
}

.chart-heading span {
  color: var(--green);
  font-size: clamp(1.2rem, 4vw, 2rem);
  font-weight: 900;
}

.chart-card canvas {
  display: block;
  width: 100%;
  min-height: 260px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(31, 138, 91, 0.08), rgba(241, 184, 75, 0.08));
}

.person-card {
  display: grid;
  align-content: space-between;
  gap: 10px;
}

.person-card span {
  color: var(--green);
}

.account-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.account-card {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.account-card:hover {
  transform: translateY(-5px);
  border-color: var(--green);
}

.account-card span {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 5px 10px;
  border-radius: 8px;
  color: var(--navy);
  background: var(--gold);
  font-size: 0.78rem;
  font-weight: 900;
}

.account-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.lesson-card {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.lesson-card:hover {
  transform: translateY(-5px);
  border-color: var(--green);
}

.lesson-card span {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 5px 10px;
  border-radius: 8px;
  color: var(--navy);
  background: var(--gold);
  font-size: 0.78rem;
  font-weight: 900;
}

.lesson-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.tool-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.tool-card {
  display: grid;
  align-content: space-between;
  gap: 12px;
}

.tool-card span {
  color: var(--green);
  font-size: 0.9rem;
  font-weight: 900;
}

.tool-card:hover span {
  color: var(--green-dark);
}

.glossary-search {
  display: grid;
  gap: 8px;
  max-width: 520px;
  margin-bottom: 24px;
}

.glossary-search label {
  color: var(--navy);
  font-weight: 900;
}

body.dark-mode .glossary-search label {
  color: var(--white);
}

.glossary-search input {
  width: 100%;
  min-height: 50px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--ink);
  background: var(--card);
  font: inherit;
  box-shadow: var(--shadow);
}

.glossary-search input:focus {
  outline: 3px solid rgba(31, 138, 91, 0.2);
  border-color: var(--green);
}

.empty-message {
  display: none;
  margin: 0 0 18px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  background: var(--card);
  font-weight: 800;
}

.empty-message.show {
  display: block;
}

.term-card.hidden {
  display: none;
}

.term-card {
  position: relative;
  min-height: 170px;
  overflow: hidden;
  cursor: pointer;
}

.term-card:focus {
  outline: 3px solid rgba(31, 138, 91, 0.25);
  outline-offset: 3px;
}

.card-front,
.card-back {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: center;
  min-height: 170px;
  padding: 22px;
  backface-visibility: hidden;
  transition: transform 0.35s ease;
}

.card-front {
  background: var(--card);
}

.card-front h3 {
  margin-bottom: 12px;
}

.card-front span {
  color: var(--green);
  font-size: 0.85rem;
  font-weight: 900;
}

.card-back {
  color: var(--white);
  background: var(--navy);
  transform: rotateY(180deg);
}

.card-back p {
  color: var(--white);
  font-weight: 800;
}

.term-card.flipped .card-front {
  transform: rotateY(180deg);
}

.term-card.flipped .card-back {
  transform: rotateY(0deg);
}

.mistake-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.path-grid,
.risk-grid,
.resource-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.risk-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.path-grid article,
.risk-card,
.resource-grid article,
.quiz-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.path-grid article,
.risk-card,
.resource-grid article {
  padding: 22px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.path-grid article:hover,
.risk-card:hover,
.resource-grid article:hover {
  transform: translateY(-5px);
  border-color: var(--green);
}

.path-grid span,
.risk-card span {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 5px 10px;
  border-radius: 8px;
  color: var(--navy);
  background: var(--gold);
  font-size: 0.78rem;
  font-weight: 900;
}

.path-grid p,
.risk-card p,
.resource-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.risk-card {
  border-top: 8px solid var(--green);
}

.medium-risk {
  border-top-color: var(--gold);
}

.high-risk {
  border-top-color: #d94b4b;
}

.checklist {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.checklist label {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  color: var(--ink);
  font-weight: 800;
  box-shadow: var(--shadow);
}

.checklist input,
.quiz-card input {
  accent-color: var(--green);
}

.quiz-card {
  display: grid;
  gap: 18px;
  max-width: 860px;
  margin: 0 auto;
  padding: 24px;
}

.quiz-card fieldset {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.quiz-card legend {
  padding: 0 8px;
  color: var(--navy);
  font-weight: 900;
}

body.dark-mode .quiz-card legend {
  color: var(--white);
}

.quiz-card label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--muted);
  font-weight: 700;
}

.quiz-result {
  min-height: 46px;
  padding: 14px 16px;
  border-radius: 8px;
  background: rgba(31, 138, 91, 0.1);
  color: var(--ink);
  font-weight: 800;
}

.site-footer {
  padding: 46px 24px;
  color: #dce7ef;
  background: var(--navy);
  text-align: center;
}

.site-footer h2 {
  color: var(--white);
  font-size: 2rem;
}

.site-footer p {
  max-width: 760px;
  margin: 10px auto;
}

@media (max-width: 980px) {
  .navbar {
    flex-wrap: wrap;
  }

  .menu-toggle {
    display: block;
    margin-left: auto;
  }

  .nav-links {
    display: none;
    width: 100%;
    order: 4;
    align-items: stretch;
    padding-top: 10px;
  }

  .nav-links.open {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .nav-links a {
    text-align: center;
  }

  .hero,
  .split-layout,
  .calculator-layout {
    grid-template-columns: 1fr;
  }

  .card-grid,
  .tool-grid,
  .glossary-grid,
  .mistake-list,
  .account-grid,
  .module-grid,
  .date-grid,
  .path-grid,
  .risk-grid,
  .resource-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .navbar {
    padding: 12px 16px;
  }

  .logo {
    font-size: 0.95rem;
  }

  .logo-mark {
    width: 34px;
    height: 34px;
  }

  .theme-toggle {
    min-width: 66px;
    padding: 8px 10px;
  }

  .nav-links.open,
  .card-grid,
  .tool-grid,
  .glossary-grid,
  .steps-list,
  .topic-list,
  .mistake-list,
  .account-grid,
  .module-grid,
  .date-grid,
  .path-grid,
  .risk-grid,
  .resource-grid,
  .checklist {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 66px 18px;
    scroll-margin-top: 118px;
  }

  .hero {
    min-height: auto;
    padding-top: 54px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .hero-panel,
  .calculator-card,
  .results-card {
    padding: 20px;
  }

  .stat-grid {
    grid-template-columns: 1fr;
  }

  .quote-card {
    font-size: 1.08rem;
  }

  .chart-heading {
    display: grid;
  }
}