/* ==========================================================================
   FinVice — shared stylesheet
   This one file controls the look of every page. Change a colour or font
   here and it updates across the whole site.
   ========================================================================== */

/* ---- 1. Design tokens (edit these to re-skin the site) ------------------ */
:root {
  --paper:      #FFFFFF;   /* page background                     */
  --paper-2:    #F6F7F9;   /* subtle section / footer background  */
  --card:       #FFFFFF;   /* raised cards                        */
  --ink:        #16181D;   /* main text                           */
  --ink-soft:   #5B6270;   /* secondary text                      */
  --navy:       #1F3A5F;   /* the one accent colour               */
  --navy-2:     #2C4F7C;   /* hover / lighter navy                */
  --tint:       #DCE6F2;   /* pale navy for highlights            */
  --tint-2:     #8FA7C4;   /* mid navy for underlines and borders */
  --line:       #E4E7EC;   /* hairline borders                    */
  --danger:     #B4451F;   /* warnings / "too low" states         */

  --font-display: 'Source Serif 4', Georgia, serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --font-mono:    'IBM Plex Mono', ui-monospace, monospace;

  --wrap: 1080px;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(31,58,95,.05), 0 6px 20px rgba(31,58,95,.06);
}

/* ---- 2. Reset & base ---------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--navy); text-decoration-thickness: 1.5px; text-underline-offset: 2px; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: 22px; }

/* The signature highlighter mark — used on jargon everywhere */
.mark {
  background: linear-gradient(180deg, transparent 58%, var(--tint) 58%, var(--tint) 92%, transparent 92%);
  padding: 0 .08em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--navy-2);
}

/* ---- 3. Header / nav ---------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding-block: 14px; flex-wrap: wrap;
}
.brand { display: flex; align-items: baseline; gap: 10px; text-decoration: none; }
.brand b {
  font-family: var(--font-display); font-weight: 700; font-size: 1.35rem;
  color: var(--navy); letter-spacing: -.01em;
}
.brand span { font-family: var(--font-mono); font-size: .66rem; color: var(--ink-soft); letter-spacing: .1em; }
.nav-links { display: flex; gap: 4px; flex-wrap: wrap; }
.nav-links a {
  font-family: var(--font-body); font-size: .9rem; text-decoration: none;
  color: var(--ink-soft); padding: 7px 10px; border-bottom: 2px solid transparent;
}
.nav-links a:hover { color: var(--navy); }
.nav-links a[aria-current="page"] { color: var(--navy); font-weight: 600; border-bottom-color: var(--navy); }

/* ---- 4. Buttons --------------------------------------------------------- */
.btn {
  display: inline-block; font-family: var(--font-body); font-size: .92rem;
  font-weight: 700; text-decoration: none; cursor: pointer;
  padding: 13px 22px; border-radius: 10px; border: 1.5px solid var(--navy);
  background: var(--navy); color: #fff; transition: transform .08s ease, background .15s ease;
}
.btn:hover { background: var(--navy-2); border-color: var(--navy-2); }
.btn:active { transform: translateY(1px); }
.btn-accent { background: var(--tint); color: var(--navy); border-color: var(--tint-2); }
.btn-accent:hover { background: var(--tint-2); }
.btn-ghost { background: transparent; color: var(--navy); }
.btn-ghost:hover { background: var(--paper-2); }

/* ---- 5. Sections & headings -------------------------------------------- */
section { padding-block: 60px; }
.section-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1.6rem, 4vw, 2.4rem); line-height: 1.1;
  letter-spacing: -.01em; margin-top: 8px;
}
.lead { color: var(--ink-soft); font-size: 1.08rem; max-width: 62ch; margin-top: 14px; }

/* ---- 6. Hero ------------------------------------------------------------ */
.hero { padding-block: 70px 40px; }
.hero h1 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(2.4rem, 7vw, 4.4rem); line-height: 1.02;
  letter-spacing: -.03em;
}
.hero h1 .thin { color: var(--navy); }
.hero .lead { font-size: 1.2rem; margin-top: 22px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }

/* Live decoder demo (home hero signature) */
.decoder {
  margin-top: 46px; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden;
}
.decoder-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px; border-bottom: 1px solid var(--line); background: var(--paper-2);
}
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.decoder-head .label { margin-left: auto; font-family: var(--font-mono); font-size: .72rem; color: var(--ink-soft); }
.decoder-body { padding: 26px 22px 30px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.chip {
  font-family: var(--font-mono); font-size: .82rem; cursor: pointer;
  padding: 8px 13px; border-radius: 999px; border: 1.5px solid var(--line);
  background: var(--paper); color: var(--ink); transition: all .15s ease;
}
.chip:hover { border-color: var(--navy); }
.chip[aria-pressed="true"] { background: var(--navy); color: #fff; border-color: var(--navy); }
.decode-out .term {
  font-family: var(--font-mono); font-size: 1.05rem; color: var(--navy); font-weight: 700;
}
.decode-out .arrow { font-family: var(--font-mono); color: var(--tint-2); margin: 0 10px; }
.decode-out .plain { font-size: 1.25rem; font-family: var(--font-display); margin-top: 10px; line-height: 1.35; }

/* ---- 7. Card grids ------------------------------------------------------ */
.grid { display: grid; gap: 18px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.tile {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 10px;
}
.tile h3 { font-family: var(--font-display); font-size: 1.2rem; letter-spacing: -.01em; }
.tile p { color: var(--ink-soft); font-size: .98rem; }
.tile .num { font-family: var(--font-mono); font-size: .8rem; color: var(--tint-2); }
.tile a.more { font-family: var(--font-mono); font-size: .82rem; margin-top: auto; text-decoration: none; }
.tile a.more:hover { text-decoration: underline; }

/* ---- 8. Tools / calculators -------------------------------------------- */
.tool {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden; margin-bottom: 34px;
}
.tool-head { padding: 22px 24px 0; }
.tool-head h3 { font-family: var(--font-display); font-size: 1.35rem; }
.tool-head p { color: var(--ink-soft); font-size: .96rem; margin-top: 6px; }
.tool-body { padding: 22px 24px 26px; display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: start; }
.field { margin-bottom: 15px; }
.field label { display: block; font-family: var(--font-mono); font-size: .76rem; color: var(--ink-soft); margin-bottom: 6px; text-transform: uppercase; letter-spacing: .06em; }
.field input, .field select, .search-in {
  width: 100%; font-family: var(--font-body); font-size: 1rem;
  padding: 11px 13px; border: 1.5px solid var(--line); border-radius: 9px;
  background: var(--paper); color: var(--ink);
}
.field input:focus, .field select:focus, .search-in:focus { outline: none; border-color: var(--navy); box-shadow: 0 0 0 3px rgba(203,234,70,.4); }
.result {
  background: var(--navy); color: #fff; border-radius: 12px; padding: 22px;
}
.result .big { font-family: var(--font-display); font-size: 2.2rem; font-weight: 700; letter-spacing: -.02em; }
.result .big.money::before { content: "$"; opacity: .7; font-size: 1.3rem; vertical-align: super; margin-right: 2px; }
.result .row { display: flex; justify-content: space-between; padding: 8px 0; border-top: 1px solid rgba(255,255,255,.15); font-family: var(--font-mono); font-size: .84rem; }
.result .row:first-of-type { margin-top: 14px; }
.result .row span:last-child { color: var(--tint); }
.result .warn { color: var(--tint); font-family: var(--font-mono); font-size: .82rem; }

/* ---- 9. Jargon decoder (tools page) ------------------------------------ */
.dict { display: grid; gap: 10px; }
.entry {
  border: 1px solid var(--line); border-radius: 11px; background: var(--card); overflow: hidden;
}
.entry summary {
  cursor: pointer; padding: 14px 18px; list-style: none; display: flex; align-items: center; gap: 12px;
  font-family: var(--font-mono); font-weight: 700; color: var(--navy);
}
.entry summary::-webkit-details-marker { display: none; }
.entry summary::after { content: "+"; margin-left: auto; color: var(--tint-2); font-size: 1.3rem; }
.entry[open] summary::after { content: "\2013"; }
.entry .def { padding: 0 18px 18px; color: var(--ink-soft); }
.entry .def .ex { display: block; margin-top: 8px; font-size: .92rem; color: var(--ink); }

/* ---- 10. Learn / accordion --------------------------------------------- */
.lesson { border-bottom: 1px solid var(--line); }
.lesson summary {
  cursor: pointer; list-style: none; padding: 22px 0; display: flex; gap: 16px; align-items: baseline;
}
.lesson summary::-webkit-details-marker { display: none; }
.lesson summary .n { font-family: var(--font-mono); color: var(--tint-2); font-size: .9rem; }
.lesson summary h3 { font-family: var(--font-display); font-size: 1.3rem; flex: 1; letter-spacing: -.01em; }
.lesson summary::after { content: "\203A"; font-size: 1.6rem; color: var(--ink-soft); transition: transform .2s ease; }
.lesson[open] summary::after { transform: rotate(90deg); }
.lesson .content { padding-bottom: 26px; max-width: 68ch; }
.lesson .content p { margin-bottom: 14px; color: var(--ink); }

/* ---- 11. Quiz ----------------------------------------------------------- */
.quiz { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 30px 26px; }
.q { margin-bottom: 26px; }
.q .qtext { font-family: var(--font-display); font-size: 1.18rem; margin-bottom: 14px; }
.q .qtext .n { color: var(--tint-2); font-family: var(--font-mono); font-size: .9rem; margin-right: 8px; }
.opt { display: block; width: 100%; text-align: left; cursor: pointer; margin-bottom: 9px;
  padding: 13px 16px; border: 1.5px solid var(--line); border-radius: 10px; background: var(--paper);
  font-family: var(--font-body); font-size: .98rem; color: var(--ink); transition: all .12s ease; }
.opt:hover { border-color: var(--navy); }
.opt.correct { border-color: var(--navy); background: #EAF4EC; }
.opt.wrong { border-color: var(--danger); background: #F8ECE6; }
.opt:disabled { cursor: default; }
.q .explain { font-size: .92rem; color: var(--ink-soft); margin-top: 10px; padding-left: 4px; display: none; }
.q .explain.show { display: block; }
.quiz-score { font-family: var(--font-display); font-size: 1.6rem; text-align: center; padding: 10px 0 4px; display: none; }
.quiz-score.show { display: block; }

/* ---- 12. Notes / articles ---------------------------------------------- */
.note-list { display: grid; gap: 26px; }
.note {
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--card);
  padding: 30px; box-shadow: var(--shadow);
}
.note .meta { font-family: var(--font-mono); font-size: .74rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: .08em; }
.note h2 { font-family: var(--font-display); font-size: 1.6rem; letter-spacing: -.02em; margin: 8px 0 14px; }
.note p { margin-bottom: 14px; color: var(--ink); max-width: 70ch; }

/* ---- 12b. Article list (home page) ------------------------------------ */
.list-label { font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; color: var(--ink-soft);
  padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.post { padding: 26px 0; border-bottom: 1px solid var(--line); }
.post h3 { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.3rem, 2.6vw, 1.6rem);
  line-height: 1.25; letter-spacing: -.01em; }
.post h3 a { color: var(--navy); text-decoration: none; }
.post h3 a:hover { text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: 3px; }
.post .meta { font-size: .84rem; color: var(--ink-soft); margin: 8px 0 10px; }
.post p { max-width: 66ch; line-height: 1.65; }
.post .read { display: inline-block; margin-top: 10px; font-weight: 600; font-size: .9rem;
  color: var(--navy); text-decoration: none; border-bottom: 1px solid var(--navy); }

/* ---- 13. Footer --------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); background: var(--paper-2); margin-top: 40px; }
.footer-in { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; padding-block: 34px; }
.footer-in .brand b { font-size: 1.1rem; }
.foot-links { display: flex; gap: 18px; flex-wrap: wrap; }
.foot-links a { font-family: var(--font-mono); font-size: .82rem; color: var(--ink-soft); text-decoration: none; }
.foot-links a:hover { color: var(--navy); }
.disclaimer {
  border-top: 1px solid var(--line); padding-block: 18px; font-size: .82rem; color: var(--ink-soft);
  max-width: 80ch;
}
.disclaimer b { color: var(--ink); }

/* ---- 14. Responsive ----------------------------------------------------- */
@media (max-width: 820px) {
  .tool-body { grid-template-columns: 1fr; }
  .grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .nav { justify-content: center; }
  .nav-links { justify-content: center; }
  section { padding-block: 46px; }
}

/* ---- 15. Accessibility -------------------------------------------------- */
:focus-visible { outline: 3px solid var(--navy); outline-offset: 2px; border-radius: 4px; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}