/*
Theme Name: TBA Premium (Kadence Child)
Theme URI: https://testbankalternative.com/
Description: Premium child theme for TestBankAlternative. Emerald + amber + cream palette with serif headings.
Template: kadence
Version: 1.0.0
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&display=swap');

:root {
  --tba-emerald: #0f5e4a;
  --tba-emerald-deep: #0a3f31;
  --tba-emerald-soft: #e6f1ec;
  --tba-cream: #fbf6e9;
  --tba-ivory: #fffdf7;
  --tba-amber: #b8862f;
  --tba-amber-bright: #e6b85c;
  --tba-ink: #1a2622;
  --tba-mute: #5a6b66;
  --tba-line: #e3dfd1;
  --tba-radius: 14px;
  --tba-shadow: 0 8px 28px rgba(10,63,49,.08);
  --tba-font-serif: 'Playfair Display', 'DM Serif Display', Georgia, serif;
  --tba-font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

body { font-family: var(--tba-font-sans); color: var(--tba-ink); background: var(--tba-ivory); line-height: 1.6; }
h1, h2, h3, h4, h5, h6 { font-family: var(--tba-font-serif); color: var(--tba-emerald-deep); letter-spacing: -.01em; }
.tba-h1 { font-size: clamp(32px, 5vw, 52px); margin: 0 0 16px; line-height: 1.1; }
.tba-h2 { font-size: clamp(24px, 3.4vw, 36px); margin: 32px 0 14px; line-height: 1.2; }
.tba-eyebrow { color: var(--tba-amber); font-weight: 600; letter-spacing: 2.5px; text-transform: uppercase; font-size: 12.5px; margin: 0 0 10px; }
.tba-lede { color: var(--tba-mute); font-size: 18px; margin: 0 0 22px; max-width: 60ch; }

/* HEADER + NAV */
.tba-site-header { position: sticky; top: 0; background: rgba(255,253,247,.96); backdrop-filter: saturate(140%) blur(8px); z-index: 50; border-bottom: 1px solid var(--tba-line); }
.tba-header__inner { max-width: 1200px; margin: 0 auto; padding: 14px 22px; display: flex; align-items: center; gap: 22px; }
.tba-logo { display: inline-flex; align-items: center; }
.tba-logo svg { height: 44px; width: auto; }
.tba-nav { margin-left: auto; display: flex; align-items: center; gap: 22px; }
.tba-nav a { color: var(--tba-emerald-deep); text-decoration: none; font-weight: 500; font-size: 15px; padding: 8px 4px; border-bottom: 2px solid transparent; }
.tba-nav a:hover { border-bottom-color: var(--tba-amber); }
.tba-nav__cta { background: var(--tba-emerald); color: #fff !important; padding: 10px 18px !important; border-radius: 8px; }
.tba-nav__cta:hover { background: var(--tba-emerald-deep); border-bottom: 2px solid transparent !important; }
.tba-burger { display: none; background: none; border: 0; padding: 10px; cursor: pointer; color: var(--tba-emerald-deep); }
.tba-burger svg { width: 28px; height: 28px; }

@media (max-width: 860px) {
  .tba-burger { display: inline-flex; margin-left: auto; }
  .tba-nav { position: fixed; inset: 60px 0 0 0; background: #fffdf7; flex-direction: column; align-items: stretch; gap: 0; padding: 12px 18px; transform: translateY(-110%); transition: transform .3s ease; box-shadow: 0 12px 24px rgba(0,0,0,.08); pointer-events: none; visibility: hidden; overflow-y: auto; z-index: 60; }
  .tba-nav.is-open { transform: translateY(0); pointer-events: auto; visibility: visible; }
  body.tba-menu-open { overflow: hidden; }
  .tba-nav a { padding: 16px 8px; border-bottom: 1px solid var(--tba-line) !important; min-height: 48px; display: flex; align-items: center; }
  .tba-nav__cta { margin: 12px 0; text-align: center; justify-content: center; }
}

/* HERO */
.tba-hero { background:
  radial-gradient(1200px 360px at 80% -20%, rgba(184,134,47,.10), transparent 60%),
  radial-gradient(900px 320px at 0% 20%, rgba(15,94,74,.10), transparent 60%),
  var(--tba-ivory);
  padding: 72px 22px 56px; }
.tba-hero__inner { max-width: 1100px; margin: 0 auto; }
.tba-hero__title { font-family: var(--tba-font-serif); font-size: clamp(34px, 6.4vw, 64px); margin: 0 0 18px; color: var(--tba-emerald-deep); line-height: 1.05; max-width: 18ch; }
.tba-hero__sub { color: var(--tba-mute); font-size: clamp(16px, 1.8vw, 19px); max-width: 60ch; margin: 0 0 28px; }
.tba-hero__cta { display: flex; flex-wrap: wrap; gap: 12px; }
.tba-trust { color: var(--tba-mute); margin-top: 28px; font-size: 14px; }

/* TRUST STRIP */
.tba-strip { background: var(--tba-emerald-deep); color: #fff; padding: 22px; }
.tba-strip__inner { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; text-align: center; }
.tba-strip__inner > div { padding: 4px 8px; line-height: 1.4; font-size: 14.5px; }
.tba-strip strong { font-family: var(--tba-font-serif); font-size: clamp(24px, 3vw, 34px); color: var(--tba-amber-bright); display: block; margin-bottom: 4px; }
@media (max-width: 700px) { .tba-strip__inner { grid-template-columns: repeat(2, 1fr); } }

/* SECTIONS */
.tba-section { max-width: 1100px; margin: 0 auto; padding: 64px 22px; }
.tba-section--soft { background: linear-gradient(180deg, transparent, var(--tba-cream)); max-width: none; }
.tba-section--soft > * { max-width: 1100px; margin-left: auto; margin-right: auto; }

/* CARDS */
.tba-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .tba-grid { grid-template-columns: 1fr; } }
.tba-card { display: block; padding: 24px; background: #fff; border: 1px solid var(--tba-line); border-radius: var(--tba-radius); text-decoration: none; color: inherit; transition: transform .15s, box-shadow .2s, border-color .2s; }
.tba-card:hover { transform: translateY(-2px); box-shadow: var(--tba-shadow); border-color: var(--tba-amber); }
.tba-card__cat { color: var(--tba-amber); letter-spacing: 1.5px; text-transform: uppercase; font-weight: 600; font-size: 12px; margin: 0 0 8px; }
.tba-card__title { font-family: var(--tba-font-serif); font-size: 22px; color: var(--tba-emerald-deep); margin: 0 0 8px; }
.tba-card__sub { color: var(--tba-mute); margin: 0 0 14px; font-size: 15px; }
.tba-card__cta { color: var(--tba-emerald); font-weight: 600; }

/* FEATURES */
.tba-features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 900px) { .tba-features { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .tba-features { grid-template-columns: 1fr; } }
.tba-feature { background: #fff; border: 1px solid var(--tba-line); border-radius: var(--tba-radius); padding: 22px; }
.tba-feature__icon { font-size: 28px; display: inline-block; margin-bottom: 8px; }
.tba-feature h3 { font-family: var(--tba-font-serif); font-size: 20px; margin: 4px 0 8px; color: var(--tba-emerald-deep); }
.tba-feature p { margin: 0; color: var(--tba-mute); font-size: 15px; }

/* SAMPLE Q PREVIEW */
.tba-sample { background: #fff; border: 1px solid var(--tba-line); border-radius: var(--tba-radius); padding: 28px; box-shadow: var(--tba-shadow); }
.tba-sample__cat { color: var(--tba-amber); letter-spacing: 1.5px; text-transform: uppercase; font-size: 12px; font-weight: 600; margin: 0 0 8px; }
.tba-sample__stem { font-family: var(--tba-font-serif); font-size: 22px; color: var(--tba-emerald-deep); margin: 0 0 18px; line-height: 1.3; }
.tba-sample__choices { list-style: none; padding: 0; margin: 0 0 22px; display: grid; gap: 10px; }
.tba-sample__choices li { display: flex; gap: 12px; padding: 14px 16px; border: 2px solid var(--tba-line); border-radius: 10px; background: #fff; align-items: center; }
.tba-sample__choices li.is-correct { border-color: #1f8a5c; background: #e6f6ed; }
.tba-sample__choices li span { width: 28px; height: 28px; border-radius: 6px; background: var(--tba-emerald-soft); color: var(--tba-emerald-deep); font-weight: 700; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.tba-sample__choices li.is-correct span { background: #1f8a5c; color: #fff; }

/* QUOTES */
.tba-quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 900px) { .tba-quotes { grid-template-columns: 1fr; } }
.tba-quotes blockquote { background: #fff; border: 1px solid var(--tba-line); padding: 22px; border-radius: var(--tba-radius); margin: 0; }
.tba-quotes blockquote p { font-family: var(--tba-font-serif); font-style: italic; font-size: 17px; color: var(--tba-emerald-deep); margin: 0 0 10px; }
.tba-quotes blockquote cite { color: var(--tba-mute); font-style: normal; font-size: 14px; font-weight: 500; }

/* STEPS */
.tba-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 28px 0; }
@media (max-width: 900px) { .tba-steps { grid-template-columns: 1fr; } }
.tba-step { background: #fff; border: 1px solid var(--tba-line); border-radius: var(--tba-radius); padding: 24px; }
.tba-step__num { width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; background: var(--tba-emerald); color: #fff; font-family: var(--tba-font-serif); font-weight: 700; margin-bottom: 12px; }
.tba-step h2 { font-size: 20px; margin: 0 0 8px; }

/* PRICING */
.tba-pricing { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin: 28px 0; }
@media (max-width: 800px) { .tba-pricing { grid-template-columns: 1fr; } }
.tba-plan { background: #fff; border: 1px solid var(--tba-line); border-radius: var(--tba-radius); padding: 28px; }
.tba-plan--featured { border-color: var(--tba-amber); box-shadow: var(--tba-shadow); position: relative; }
.tba-plan--featured::before { content: "Premium"; position: absolute; top: -12px; right: 18px; background: var(--tba-amber); color: #fff; font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; letter-spacing: 1px; }
.tba-plan__cat { color: var(--tba-amber); letter-spacing: 1.5px; text-transform: uppercase; font-weight: 600; font-size: 12px; margin: 0 0 8px; }
.tba-plan__price { font-family: var(--tba-font-serif); font-size: 44px; color: var(--tba-emerald-deep); margin: 0; line-height: 1; }
.tba-plan__sub { color: var(--tba-mute); margin: 0 0 16px; font-size: 14px; }
.tba-plan ul { list-style: none; padding: 0; margin: 0 0 22px; }
.tba-plan li { padding: 8px 0; border-bottom: 1px dashed var(--tba-line); }

/* BUTTONS (theme level) */
.tba-btn { display: inline-flex; align-items: center; justify-content: center; font-family: var(--tba-font-sans); font-weight: 600; font-size: 16px; padding: 14px 22px; border-radius: 10px; border: 2px solid transparent; cursor: pointer; text-decoration: none; min-height: 48px; }
.tba-btn--primary { background: var(--tba-emerald); color: #fff; }
.tba-btn--primary:hover { background: var(--tba-emerald-deep); }
.tba-btn--ghost { background: transparent; border-color: var(--tba-line); color: var(--tba-emerald-deep); }
.tba-btn--ghost:hover { border-color: var(--tba-emerald); }
.tba-btn--gold { background: linear-gradient(135deg, var(--tba-amber-bright), var(--tba-amber)); color: #fff; }
.tba-btn--lg { padding: 16px 26px; font-size: 17px; }

/* FOOTER */
.tba-site-footer { background: var(--tba-emerald-deep); color: #d6e7df; padding: 56px 22px 24px; margin-top: 64px; }
.tba-footer__cols { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
@media (max-width: 900px) { .tba-footer__cols { grid-template-columns: repeat(2, 1fr); } }
.tba-footer__col h4 { font-family: var(--tba-font-serif); font-size: 16px; color: var(--tba-amber-bright); margin: 0 0 12px; }
.tba-footer__col a { color: #d6e7df; text-decoration: none; font-size: 14.5px; display: block; padding: 6px 0; }
.tba-footer__col a:hover { color: #fff; }
.tba-footer__newsletter input[type="email"] { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18); padding: 12px 14px; border-radius: 8px; color: #fff; width: 100%; min-height: 44px; }
.tba-footer__newsletter button { background: var(--tba-amber); color: #fff; border: 0; padding: 12px 16px; border-radius: 8px; margin-top: 8px; font-weight: 600; cursor: pointer; min-height: 44px; }
.tba-footer__bottom { max-width: 1100px; margin: 28px auto 0; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.1); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: #b8cdc4; font-size: 13.5px; }
.tba-social { display: flex; gap: 10px; }
.tba-social a { width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid rgba(255,255,255,.2); border-radius: 50%; }

/* DETAILS / FAQ */
details { background: #fff; border: 1px solid var(--tba-line); border-radius: var(--tba-radius); padding: 14px 18px; margin: 8px 0; }
details > summ