/* ===== LEDGER & PUZZLE — SHARED SITE STYLES ===== */

:root {
  --ink: #12100e;
  --paper: #f4ede1;
  --paper-warm: #ece2cf;
  --rule: #2a251f;
  --accent: #c8442a;
  --accent-dark: #8e2c17;
  --gold: #a88434;
  --green: #2d5016;
  --muted: #6b5d4a;
  --card: #faf6ec;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Instrument Sans', -apple-system, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.5;
  font-size: 16px;
  background-image:
    radial-gradient(ellipse at top left, rgba(200,68,42,0.03) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(168,132,52,0.04) 0%, transparent 50%);
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  mix-blend-mode: multiply;
  z-index: 1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.4'/%3E%3C/svg%3E");
}

.display-serif { font-family: 'Fraunces', Georgia, serif; font-optical-sizing: auto; letter-spacing: -0.02em; }
.mono { font-family: 'JetBrains Mono', monospace; }

/* ===== MASTHEAD ===== */
.masthead { background: var(--ink); color: var(--paper); border-bottom: 3px double var(--paper); position: relative; z-index: 10; }
.masthead-top { display: flex; justify-content: space-between; align-items: center; padding: 10px 32px; border-bottom: 1px solid rgba(244,237,225,0.15); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; }
.masthead-top .date { font-family: 'JetBrains Mono', monospace; font-weight: 600; }
.masthead-top .meta { opacity: 0.7; }
.masthead-main { text-align: center; padding: 28px 32px 20px; }
.masthead-main .logo { font-family: 'Fraunces', serif; font-weight: 800; font-size: clamp(42px, 7vw, 78px); letter-spacing: -0.035em; line-height: 0.95; font-style: italic; }
.masthead-main .logo a { color: inherit; text-decoration: none; }
.masthead-main .logo .amp { color: var(--accent); font-style: normal; padding: 0 0.15em; font-weight: 400; }
.masthead-main .tagline { font-size: 13px; letter-spacing: 0.25em; text-transform: uppercase; opacity: 0.75; margin-top: 6px; font-family: 'Instrument Sans', sans-serif; }

nav.primary { display: flex; justify-content: center; gap: 0; padding: 0 32px; border-top: 1px solid rgba(244,237,225,0.15); flex-wrap: wrap; }
nav.primary a { color: var(--paper); text-decoration: none; padding: 14px 22px; font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; font-weight: 500; transition: background 0.2s, color 0.2s; position: relative; }
nav.primary a:hover { background: var(--accent); color: var(--paper); }
nav.primary a.active::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 30px; height: 2px; background: var(--accent); }

/* ===== AD SLOT ===== */
.ad-slot { background: repeating-linear-gradient(45deg, rgba(42,37,31,0.04), rgba(42,37,31,0.04) 10px, rgba(42,37,31,0.08) 10px, rgba(42,37,31,0.08) 20px); border: 1px dashed var(--rule); display: flex; align-items: center; justify-content: center; flex-direction: column; padding: 20px; font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); letter-spacing: 0.15em; text-transform: uppercase; margin: 24px 0; }
.ad-slot.leaderboard { min-height: 110px; }
.ad-slot.rectangle { min-height: 280px; }
.ad-slot .size { font-size: 22px; font-family: 'Fraunces', serif; color: var(--ink); letter-spacing: 0; margin-bottom: 6px; text-transform: none; }

/* ===== LAYOUT ===== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; position: relative; z-index: 2; }

/* ===== FOOTER ===== */
footer.site { background: var(--ink); color: var(--paper); padding: 48px 32px 24px; margin-top: 64px; }
.footer-grid { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 32px; }
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-brand .logo { font-family: 'Fraunces', serif; font-size: 32px; font-weight: 800; font-style: italic; margin-bottom: 12px; }
.footer-brand .logo .amp { color: var(--accent); font-style: normal; }
.footer-brand p { font-size: 13px; opacity: 0.6; max-width: 300px; line-height: 1.5; }
.footer-col h4 { font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 14px; opacity: 0.7; }
.footer-col a { display: block; color: var(--paper); text-decoration: none; font-size: 13px; padding: 4px 0; opacity: 0.8; transition: opacity 0.2s; }
.footer-col a:hover { opacity: 1; color: var(--accent); }
.footer-bottom { max-width: 1280px; margin: 0 auto; padding-top: 24px; border-top: 1px solid rgba(244,237,225,0.15); display: flex; justify-content: space-between; font-size: 11px; opacity: 0.5; font-family: 'JetBrains Mono', monospace; }
@media (max-width: 600px) { .footer-bottom { flex-direction: column; gap: 8px; } }

/* ===== CALCULATOR PAGE STYLES ===== */
.calc-hero { padding: 48px 0 32px; border-bottom: 1px solid var(--rule); }
.calc-hero .kicker { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.25em; text-transform: uppercase; color: var(--accent); font-weight: 600; margin-bottom: 14px; }
.calc-hero h1 { font-family: 'Fraunces', serif; font-size: clamp(36px, 5vw, 56px); font-weight: 600; line-height: 1.05; letter-spacing: -0.025em; margin-bottom: 16px; max-width: 900px; }
.calc-hero .lede { font-family: 'Fraunces', serif; font-size: 20px; line-height: 1.5; color: var(--muted); font-weight: 400; max-width: 780px; font-style: italic; }

.breadcrumb { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted); margin-bottom: 24px; }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { margin: 0 8px; color: var(--rule); }

.calc-layout { display: grid; grid-template-columns: 2fr 1fr; gap: 48px; padding: 48px 0; }
@media (max-width: 900px) { .calc-layout { grid-template-columns: 1fr; } }

.calc-main { background: var(--ink); color: var(--paper); padding: 40px; }
.calc-main h2 { font-family: 'Fraunces', serif; font-size: 24px; font-weight: 600; margin-bottom: 24px; border-bottom: 2px solid var(--accent); padding-bottom: 10px; display: inline-block; }

.input-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 28px; }
@media (max-width: 600px) { .input-grid { grid-template-columns: 1fr; } }

.input-row label { display: block; font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; font-weight: 600; margin-bottom: 6px; opacity: 0.8; }
.input-row .input-wrap { position: relative; }
.input-row input, .input-row select { width: 100%; background: transparent; border: none; border-bottom: 2px solid rgba(244,237,225,0.3); color: var(--paper); font-family: 'Fraunces', serif; font-size: 26px; padding: 6px 0; outline: none; transition: border-color 0.2s; -moz-appearance: textfield; }
.input-row input::-webkit-outer-spin-button, .input-row input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.input-row input:focus, .input-row select:focus { border-bottom-color: var(--accent); }
.input-row select { font-family: 'Instrument Sans', sans-serif; font-size: 18px; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23c8442a' stroke-width='2'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right center; padding-right: 20px; }
.input-row select option { background: var(--ink); color: var(--paper); }
.input-row .unit { position: absolute; right: 0; top: 10px; color: var(--muted); font-size: 14px; font-family: 'JetBrains Mono', monospace; }
.input-row .hint { font-size: 11px; opacity: 0.5; margin-top: 4px; font-family: 'JetBrains Mono', monospace; }

.result-panel { margin-top: 36px; padding-top: 28px; border-top: 1px solid rgba(244,237,225,0.2); }
.result-panel .result-label { font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; opacity: 0.6; margin-bottom: 6px; }
.result-panel .result-value { font-family: 'Fraunces', serif; font-size: 56px; font-weight: 600; letter-spacing: -0.025em; color: var(--accent); line-height: 1; }
.result-panel .result-sub { font-size: 14px; opacity: 0.75; margin-top: 10px; font-family: 'JetBrains Mono', monospace; }

.result-breakdown { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 28px; padding-top: 24px; border-top: 1px solid rgba(244,237,225,0.15); }
@media (max-width: 600px) { .result-breakdown { grid-template-columns: 1fr; } }
.result-breakdown .stat { }
.result-breakdown .stat-label { font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; opacity: 0.6; margin-bottom: 4px; }
.result-breakdown .stat-value { font-family: 'Fraunces', serif; font-size: 22px; font-weight: 600; }

/* ===== SIDEBAR / SIGNUP ===== */
.calc-sidebar { display: flex; flex-direction: column; gap: 28px; }
.signup-box { background: var(--card); border: 1px solid var(--rule); padding: 28px; position: relative; }
.signup-box::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--accent); }
.signup-box .eyebrow { font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: 0.25em; text-transform: uppercase; color: var(--accent); font-weight: 600; margin-bottom: 10px; }
.signup-box h3 { font-family: 'Fraunces', serif; font-size: 22px; line-height: 1.2; font-weight: 600; letter-spacing: -0.015em; margin-bottom: 10px; }
.signup-box p { font-size: 13px; color: var(--muted); line-height: 1.55; margin-bottom: 16px; }
.signup-box input[type="email"] { width: 100%; border: 1px solid var(--rule); background: var(--paper); color: var(--ink); padding: 12px 14px; font-family: 'JetBrains Mono', monospace; font-size: 13px; outline: none; margin-bottom: 10px; transition: border-color 0.2s; }
.signup-box input[type="email"]:focus { border-color: var(--accent); }
.signup-box button { width: 100%; background: var(--ink); color: var(--paper); border: none; padding: 13px; font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; font-weight: 600; cursor: pointer; transition: background 0.2s; font-family: 'Instrument Sans', sans-serif; }
.signup-box button:hover:not(:disabled) { background: var(--accent); }
.signup-box button:disabled { opacity: 0.6; cursor: wait; }
.signup-box .privacy-note { font-size: 10px; opacity: 0.5; margin-top: 10px; font-family: 'JetBrains Mono', monospace; margin-bottom: 0; text-align: center; }
.signup-box .form-status { font-size: 12px; margin-top: 10px; padding: 10px; display: none; font-family: 'JetBrains Mono', monospace; }
.signup-box .form-status.show { display: block; }
.signup-box .form-status.success { background: rgba(45,80,22,0.1); color: var(--green); border-left: 3px solid var(--green); }
.signup-box .form-status.error { background: rgba(200,68,42,0.1); color: var(--accent-dark); border-left: 3px solid var(--accent); }

.related-box { background: var(--card); border: 1px solid var(--rule); padding: 24px; }
.related-box h3 { font-family: 'Fraunces', serif; font-size: 14px; letter-spacing: 0.15em; text-transform: uppercase; font-weight: 600; padding-bottom: 10px; border-bottom: 2px solid var(--ink); margin-bottom: 14px; }
.related-box a { display: block; padding: 10px 0; border-bottom: 1px solid var(--rule); color: var(--ink); text-decoration: none; font-size: 14px; font-family: 'Fraunces', serif; font-weight: 500; line-height: 1.3; transition: color 0.2s; }
.related-box a:last-child { border-bottom: none; }
.related-box a:hover { color: var(--accent); }

/* ===== CONTENT BELOW CALCULATOR ===== */
.calc-content { padding: 48px 0; border-top: 1px solid var(--rule); }
.calc-content-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 48px; }
@media (max-width: 900px) { .calc-content-grid { grid-template-columns: 1fr; } }
.calc-content h2 { font-family: 'Fraunces', serif; font-size: 32px; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 20px; margin-top: 32px; }
.calc-content h2:first-child { margin-top: 0; }
.calc-content h3 { font-family: 'Fraunces', serif; font-size: 22px; font-weight: 600; letter-spacing: -0.015em; margin-bottom: 12px; margin-top: 28px; }
.calc-content p { font-family: 'Fraunces', serif; font-size: 17px; line-height: 1.65; color: var(--ink); margin-bottom: 16px; max-width: 680px; }
.calc-content ul { font-family: 'Fraunces', serif; font-size: 17px; line-height: 1.65; margin-bottom: 16px; padding-left: 20px; max-width: 680px; }
.calc-content li { margin-bottom: 8px; }
.calc-content .pullquote { border-left: 3px solid var(--accent); padding: 8px 20px; margin: 24px 0; font-family: 'Fraunces', serif; font-style: italic; font-size: 19px; line-height: 1.5; color: var(--muted); }

/* ===== FAQ ===== */
.faq-section { padding: 48px 0; border-top: 1px solid var(--rule); }
.faq-section h2 { font-family: 'Fraunces', serif; font-size: 32px; font-weight: 600; margin-bottom: 28px; letter-spacing: -0.02em; }
details.faq-item { border-bottom: 1px solid var(--rule); padding: 18px 0; }
details.faq-item summary { cursor: pointer; font-family: 'Fraunces', serif; font-size: 19px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; padding-right: 16px; }
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary::after { content: '+'; font-size: 28px; color: var(--accent); transition: transform 0.2s; font-weight: 400; }
details.faq-item[open] summary::after { content: '−'; }
details.faq-item p { font-family: 'Fraunces', serif; font-size: 16px; line-height: 1.65; color: var(--muted); margin-top: 14px; max-width: 780px; }