/* By The Book Banking - Brand Styles */

:root {
  --deep-forest: #0B2E1E;
  --dark-green: #123D29;
  --rich-green: #1B5E3A;
  --accent-green: #2F8F57;
  --off-white: #F4F5F0;
  --white: #FFFFFF;
  --muted-gray: #A7ADA8;
  --font-sans: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", Times, serif;
  --max-width: 1120px;
  --header-height: 96px;
  --radius: 8px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--off-white);
  background: var(--deep-forest);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent-green);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #4bb874;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: 1.25;
  font-weight: 700;
  margin: 0 0 0.75rem;
}

h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }

p {
  margin: 0 0 1rem;
}

ul {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

li + li {
  margin-top: 0.4rem;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.section {
  padding: 4.5rem 0;
}

.section--alt {
  background: var(--dark-green);
}

.section--light {
  background: var(--off-white);
  color: var(--deep-forest);
}

.section--light h1,
.section--light h2,
.section--light h3 {
  color: var(--deep-forest);
}

.section--light p,
.section--light li {
  color: #1a2e24;
}

.section--light .muted {
  color: #5a635c;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-green);
  margin-bottom: 0.75rem;
}

.muted {
  color: var(--muted-gray);
}

.text-center {
  text-align: center;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.5rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.2;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--accent-green);
  color: var(--white);
  border-color: var(--accent-green);
}

.btn--primary:hover {
  background: #3aa366;
  color: var(--white);
  border-color: #3aa366;
}

.btn--outline {
  background: transparent;
  color: var(--off-white);
  border-color: var(--accent-green);
}

.btn--outline:hover {
  background: var(--accent-green);
  color: var(--white);
}

.btn--outline-dark {
  background: transparent;
  color: var(--deep-forest);
  border-color: var(--rich-green);
}

.btn--outline-dark:hover {
  background: var(--rich-green);
  color: var(--white);
}

.btn--block {
  width: 100%;
}

/* Header / Nav */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #071c13;
  border-bottom: 1px solid rgba(47, 143, 87, 0.35);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-height);
  padding: 0.65rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-shrink: 0;
}

.brand__logo {
  height: 78px;
  width: auto;
  border-radius: 0;
}

.section-seal {
  margin: 2.5rem 0 0;
  text-align: center;
}

.section-seal img {
  display: inline-block;
  height: 150px;
  width: auto;
  max-width: 100%;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--accent-green);
  color: var(--off-white);
  border-radius: 6px;
  padding: 0.45rem 0.7rem;
  font-size: 1.1rem;
  cursor: pointer;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 0.35rem 0.95rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links li {
  margin: 0;
}

.nav-links a {
  color: var(--off-white);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-green);
  border-bottom-color: var(--accent-green);
}

/* Hero */

.hero {
  padding: 5.5rem 0 4.5rem;
  background:
    radial-gradient(ellipse at top right, rgba(47, 143, 87, 0.22), transparent 55%),
    linear-gradient(160deg, var(--deep-forest) 0%, var(--dark-green) 100%);
}

.hero__tagline {
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  letter-spacing: 0.02em;
  margin-bottom: 1.25rem;
  max-width: none;
}

.hero__sub {
  font-size: 1.15rem;
  color: var(--muted-gray);
  max-width: 42rem;
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.page-hero {
  padding: 4rem 0 3rem;
  background: linear-gradient(160deg, var(--deep-forest), var(--dark-green));
  border-bottom: 1px solid rgba(47, 143, 87, 0.25);
}

.page-hero h1 {
  max-width: 20ch;
}

.page-hero h1.tagline-wide {
  max-width: none;
}

sup.reg {
  font-size: 0.4em;
  vertical-align: super;
  line-height: 0;
  margin-left: 0.05em;
}

.page-hero .hero__sub {
  margin-bottom: 1.5rem;
}

/* Cards & grids */

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.card {
  background: var(--dark-green);
  border: 1px solid rgba(47, 143, 87, 0.3);
  border-radius: 12px;
  padding: 1.75rem;
}

.section--light .card {
  background: var(--white);
  border-color: rgba(11, 46, 30, 0.1);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.card__icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(47, 143, 87, 0.2);
  color: var(--accent-green);
  display: grid;
  place-items: center;
  font-weight: 800;
  margin-bottom: 1rem;
}

.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.85rem;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--accent-green);
}

.split-problem {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.panel {
  border-radius: 12px;
  padding: 1.75rem;
}

.panel--problem {
  background: rgba(140, 28, 28, 0.18);
  border: 2px solid #c43c3c;
  box-shadow: 0 0 0 1px rgba(196, 60, 60, 0.25);
}

.panel__alert {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.panel__alert-icon {
  flex-shrink: 0;
  width: 1.75rem;
  height: 1.75rem;
  color: #e85a5a;
  margin-top: 0.1rem;
}

.panel__alert h3 {
  margin: 0;
  color: #ffb4b4;
}

.panel--solution {
  background: rgba(47, 143, 87, 0.15);
  border: 2px solid var(--accent-green);
  box-shadow: 0 0 0 1px rgba(47, 143, 87, 0.25);
}

.panel--solution .panel__alert h3 {
  color: var(--off-white);
}

.panel__check {
  flex-shrink: 0;
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 50%;
  background: rgba(47, 143, 87, 0.25);
  color: #4bb874;
  display: grid;
  place-items: center;
}

.panel__check svg {
  width: 1.15rem;
  height: 1.15rem;
}

/* Book cards */

.book-card {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 1.75rem;
  align-items: start;
  background: var(--white);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  margin-bottom: 1.5rem;
}

.book-card:nth-child(even) {
  grid-template-columns: 1fr 180px;
}

.book-card:nth-child(even) .book-card__cover {
  order: 2;
}

.book-card__cover img {
  width: 100%;
  border-radius: 6px;
  box-shadow: var(--shadow);
}

.book-badge {
  display: inline-block;
  background: rgba(27, 94, 58, 0.12);
  color: var(--rich-green);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  margin-bottom: 0.65rem;
}

.callout {
  background: rgba(47, 143, 87, 0.12);
  border-left: 4px solid var(--accent-green);
  border-radius: 0 10px 10px 0;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  font-style: italic;
}

.section--light .callout {
  color: var(--deep-forest);
}

/* Steps */

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

.steps li {
  position: relative;
  padding: 1.5rem 1.5rem 1.5rem 4.5rem;
  background: var(--dark-green);
  border-radius: 12px;
  border: 1px solid rgba(47, 143, 87, 0.3);
}

.section--light .steps li {
  background: var(--white);
  border-color: rgba(11, 46, 30, 0.1);
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 1.25rem;
  top: 1.35rem;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--accent-green);
  color: var(--white);
  display: grid;
  place-items: center;
  font-weight: 800;
}

.reading-order {
  list-style: none;
  padding: 0;
  counter-reset: read;
}

.reading-order li {
  counter-increment: read;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1.15rem 0;
  border-bottom: 1px solid rgba(11, 46, 30, 0.12);
}

.reading-order li::before {
  content: counter(read);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--rich-green);
  color: var(--white);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 1.1rem;
}

/* About */

.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2.5rem;
  align-items: start;
}

.about-media__photo {
  border-radius: 12px;
  width: 100%;
  height: auto;
  box-shadow: var(--shadow);
}

.about-media__seal {
  display: block;
  width: auto;
  max-width: 190px;
  height: auto;
  margin: 1.25rem auto 0;
  border-radius: 0;
  box-shadow: none;
}

.verify-card {
  background: var(--white);
  color: var(--deep-forest);
  border: 2px solid var(--accent-green);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  box-shadow: var(--shadow);
}

.verify-card p {
  color: #1a2e24;
}

.verify-card__logo {
  height: 110px;
  width: auto;
  margin: 0 auto 1.5rem;
}

/* Forms */

.form-card {
  background: var(--white);
  color: var(--deep-forest);
  border-radius: 14px;
  padding: 2rem;
  box-shadow: var(--shadow);
}

.form-card h2,
.form-card h3 {
  color: var(--deep-forest);
}

.form-card p {
  color: #3a453e;
}

.form-group {
  margin-bottom: 1.15rem;
}

.form-group label {
  display: block;
  font-weight: 650;
  font-size: 0.92rem;
  margin-bottom: 0.4rem;
  color: var(--deep-forest);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 0.9rem;
  border: 1px solid #c5cbc6;
  border-radius: 8px;
  font: inherit;
  background: var(--off-white);
  color: var(--deep-forest);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: 2px solid var(--accent-green);
  outline-offset: 1px;
  border-color: var(--accent-green);
}

.form-note {
  font-size: 0.85rem;
  color: #5a635c;
  margin-top: 0.75rem;
}

.cta-banner {
  background:
    radial-gradient(ellipse at bottom left, rgba(47, 143, 87, 0.28), transparent 50%),
    var(--dark-green);
  text-align: center;
  padding: 4rem 0;
}

.cta-banner .hero__sub {
  margin-inline: auto;
}

/* Footer */

.site-footer {
  background: #071c13;
  border-top: 1px solid rgba(47, 143, 87, 0.25);
  padding: 3rem 0 2rem;
  color: var(--muted-gray);
  font-size: 0.92rem;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 1.75rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-brand img {
  height: 72px;
  width: auto;
  border-radius: 0;
}

.footer-seal {
  height: 84px;
  width: auto;
}

.footer-copy {
  margin-bottom: 1.25rem;
}

.footer-disclaimer {
  font-size: 0.8rem;
  line-height: 1.55;
  color: #8a918b;
  border-top: 1px solid rgba(167, 173, 168, 0.2);
  padding-top: 1.25rem;
}

/* Chat widget */

.chat-launcher {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 1100;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  border: none;
  background: var(--accent-green);
  color: var(--white);
  font-size: 1.4rem;
  cursor: pointer;
  box-shadow: var(--shadow);
}

.chat-launcher:hover {
  background: #3aa366;
}

.chat-panel {
  position: fixed;
  right: 1.25rem;
  bottom: 5.5rem;
  z-index: 1100;
  width: min(380px, calc(100vw - 2rem));
  height: min(520px, calc(100vh - 8rem));
  background: var(--white);
  color: var(--deep-forest);
  border-radius: 16px;
  box-shadow: var(--shadow);
  display: none;
  flex-direction: column;
  overflow: hidden;
}

.chat-panel.is-open {
  display: flex;
}

.chat-panel__header {
  background: var(--deep-forest);
  color: var(--off-white);
  padding: 0.9rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chat-panel__header h3 {
  margin: 0;
  font-size: 1rem;
  color: var(--off-white);
}

.chat-panel__close {
  background: transparent;
  border: none;
  color: var(--off-white);
  font-size: 1.35rem;
  cursor: pointer;
  line-height: 1;
}

.chat-panel__messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  background: var(--off-white);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.chat-msg {
  max-width: 92%;
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
  font-size: 0.92rem;
  line-height: 1.45;
}

.chat-msg--bot {
  background: var(--white);
  border: 1px solid #d7ddd8;
  align-self: flex-start;
}

.chat-msg--user {
  background: var(--rich-green);
  color: var(--white);
  align-self: flex-end;
}

.chat-panel__form {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem;
  border-top: 1px solid #d7ddd8;
  background: var(--white);
}

.chat-panel__form input {
  flex: 1;
  border: 1px solid #c5cbc6;
  border-radius: 8px;
  padding: 0.65rem 0.75rem;
  font: inherit;
}

.chat-panel__form button {
  background: var(--accent-green);
  color: var(--white);
  border: none;
  border-radius: 8px;
  padding: 0 0.9rem;
  font-weight: 700;
  cursor: pointer;
}

.chat-panel__hint {
  font-size: 0.75rem;
  color: #5a635c;
  padding: 0 0.75rem 0.65rem;
  background: var(--white);
}

/* Utilities */

.mb-0 { margin-bottom: 0; }
.mt-2 { margin-top: 1.5rem; }
.max-prose { max-width: 48rem; }
.max-prose-center { max-width: 48rem; margin-inline: auto; }

.page-hero .eyebrow a {
  color: var(--accent-green);
}

.blog-list {
  display: grid;
  gap: 1.25rem;
}

.blog-card h2 {
  font-size: 1.55rem;
  margin-bottom: 0.65rem;
}

.section--light .blog-card h2 a {
  color: var(--deep-forest);
}

.section--light .blog-card h2 a:hover {
  color: var(--rich-green);
}

.blog-card .btn {
  margin-top: 0.35rem;
}

.blog-body h2 {
  margin-top: 2.25rem;
  font-size: 1.65rem;
}

.blog-body h3 {
  margin-top: 1.5rem;
  font-size: 1.25rem;
}

.blog-body blockquote {
  margin: 1.25rem 0 1.5rem;
  padding: 0.15rem 0 0.15rem 1rem;
  border-left: 3px solid var(--rich-green);
}

.blog-body blockquote p {
  margin-bottom: 0;
  font-style: italic;
}

.blog-table-wrap {
  overflow-x: auto;
  margin: 0 0 1.25rem;
}

.blog-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  min-width: 36rem;
}

.blog-body th,
.blog-body td {
  border: 1px solid rgba(11, 46, 30, 0.16);
  padding: 0.7rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

.blog-body thead th {
  background: var(--deep-forest);
  color: var(--off-white);
}

.blog-body tbody th {
  background: rgba(47, 143, 87, 0.1);
  color: var(--deep-forest);
  width: 28%;
}

/* Responsive */

@media (max-width: 900px) {
  .grid-2,
  .grid-3,
  .split-problem,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .book-card,
  .book-card:nth-child(even) {
    grid-template-columns: 1fr;
  }

  .book-card:nth-child(even) .book-card__cover {
    order: 0;
  }

  .book-card__cover {
    max-width: 180px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #071c13;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.25rem 1.25rem;
    border-bottom: 1px solid rgba(47, 143, 87, 0.35);
    gap: 0;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links li {
    border-bottom: 1px solid rgba(167, 173, 168, 0.15);
  }

  .nav-links a {
    display: block;
    padding: 0.85rem 0;
  }

  .site-header {
    position: sticky;
  }

  .nav-bar {
    position: relative;
  }
}

@media (max-width: 560px) {
  .hero {
    padding: 3.5rem 0 3rem;
  }

  .section {
    padding: 3.25rem 0;
  }

  .form-card {
    padding: 1.35rem;
  }
}