/* BudgetYourBills — Design System
   Deep navy / paper / muted sapphire. Premium, calm, editorial. */

:root {
  --navy: #0F172A;
  --navy-2: #152036;
  --charcoal: #1E293B;
  --slate: #334155;
  --muted: #64748B;
  --line: #E7E2D9;
  --paper: #F7F4EF;
  --paper-2: #FFFDF9;
  --ink: #0F172A;
  --accent: #3D5A80;
  --accent-hover: #2F4868;
  --accent-soft: rgba(61, 90, 128, 0.10);
  --success: #3F5D4A;
  --warn: #8A6A3B;
  --danger: #8B4A4A;
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
  --shadow-sm: 0 8px 24px rgba(15, 23, 42, 0.06);
  --radius: 18px;
  --radius-sm: 12px;
  --max: 1120px;
  --font-display: "Bricolage Grotesque", "Segoe UI", sans-serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 90% -10%, rgba(61,90,128,0.10), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(15,23,42,0.05), transparent 55%),
    var(--paper);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }
button, input, select, textarea { font: inherit; }
.container { width: min(var(--max), calc(100% - 2rem)); margin-inline: auto; }
.narrow { width: min(760px, calc(100% - 2rem)); margin-inline: auto; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(247, 244, 239, 0.86);
  border-bottom: 1px solid rgba(231, 226, 217, 0.9);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 72px; gap: 1rem;
}
.logo {
  display: inline-flex; align-items: center; gap: 0.7rem;
  color: var(--navy); text-decoration: none; font-family: var(--font-display);
  font-weight: 700; letter-spacing: -0.02em; font-size: 1.05rem;
}
.logo-mark {
  width: 34px; height: 34px; border-radius: 10px;
  background: linear-gradient(145deg, var(--navy), var(--accent));
  display: grid; place-items: center; color: white; font-size: 0.85rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.18);
}
.nav-links { display: flex; align-items: center; gap: 1.25rem; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  color: var(--slate); text-decoration: none; font-weight: 600; font-size: 0.95rem;
}
.nav-links a:hover, .nav-links a.active { color: var(--navy); }
.nav-cta { margin-left: 0.25rem; }
.menu-btn {
  display: none; border: 1px solid var(--line); background: var(--paper-2);
  border-radius: 10px; padding: 0.55rem 0.75rem; color: var(--navy); cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.45rem;
  border-radius: 999px; border: 1px solid transparent;
  padding: 0.85rem 1.25rem; font-weight: 700; text-decoration: none;
  transition: 0.18s ease; cursor: pointer; line-height: 1.1;
}
.btn-primary {
  background: var(--accent); color: white; box-shadow: 0 10px 24px rgba(61,90,128,0.22);
}
.btn-primary:hover { background: var(--accent-hover); color: white; }
.btn-secondary {
  background: transparent; color: var(--navy); border-color: rgba(15,23,42,0.14);
}
.btn-secondary:hover { background: rgba(15,23,42,0.04); color: var(--navy); }
.btn-dark {
  background: var(--navy); color: white;
}
.btn-dark:hover { background: var(--charcoal); color: white; }
.btn-sm { padding: 0.65rem 1rem; font-size: 0.92rem; }
.btn-block { width: 100%; }

/* Typography */
h1,h2,h3,h4 {
  font-family: var(--font-display);
  letter-spacing: -0.03em;
  line-height: 1.12;
  margin: 0 0 0.75rem;
  color: var(--navy);
}
h1 { font-size: clamp(2.4rem, 5vw, 4rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); font-weight: 700; }
h3 { font-size: 1.35rem; font-weight: 700; }
.lead {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--slate); max-width: 42rem; line-height: 1.7;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.82rem; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 0.9rem;
}
.muted { color: var(--muted); }
.section { padding: 5rem 0; }
.section-sm { padding: 3.25rem 0; }
.section-head { margin-bottom: 2rem; max-width: 40rem; }

/* Cards / layout */
.card {
  background: var(--paper-2);
  border: 1px solid rgba(231,226,217,0.95);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.grid-2 { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.stack { display: grid; gap: 1rem; }
.stack-lg { display: grid; gap: 1.5rem; }

/* Hero */
.hero {
  padding: 4.5rem 0 3.5rem;
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 2rem; align-items: center;
}
.hero-panel {
  padding: 1.5rem;
  background:
    linear-gradient(160deg, rgba(15,23,42,0.96), rgba(30,41,59,0.94)),
    radial-gradient(circle at 20% 20%, rgba(61,90,128,0.35), transparent 45%);
  color: #E8EEF7;
  border-radius: 28px;
  min-height: 420px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.hero-panel::before {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, transparent 0 48px, rgba(255,255,255,0.035) 48px 49px),
    linear-gradient(0deg, transparent 0 48px, rgba(255,255,255,0.035) 48px 49px);
  background-size: 49px 49px;
  mask-image: radial-gradient(circle at 70% 30%, black, transparent 70%);
}
.hero-panel > * { position: relative; z-index: 1; }
.hero-kicker { color: #AFC0D8; font-size: 0.86rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.hero-panel h2 { color: white; font-size: 1.7rem; margin-top: 0.8rem; }
.hero-panel p { color: #C7D2E0; }
.metric-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; margin-top: 1.5rem; }
.metric {
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px; padding: 0.9rem;
}
.metric strong { display: block; color: white; font-family: var(--font-display); font-size: 1.25rem; }
.metric span { color: #A8B7C9; font-size: 0.82rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.6rem; }

/* Feature tiles */
.feature {
  padding: 1.35rem;
  height: 100%;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.feature:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.feature-icon {
  width: 42px; height: 42px; border-radius: 12px;
  background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center; margin-bottom: 1rem; font-weight: 800;
}
.feature p { color: var(--slate); margin: 0; }
.feature a { text-decoration: none; color: inherit; display: block; height: 100%; }

/* Trust strip */
.trust {
  display: flex; flex-wrap: wrap; gap: 0.75rem 1.25rem; align-items: center;
  color: var(--muted); font-size: 0.95rem; font-weight: 600;
}
.pill {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: rgba(15,23,42,0.04); border: 1px solid var(--line);
  border-radius: 999px; padding: 0.45rem 0.8rem; color: var(--slate); font-size: 0.88rem; font-weight: 600;
}

/* Forms */
.form-card { padding: 1.5rem; }
label { display: block; font-weight: 700; color: var(--charcoal); margin-bottom: 0.35rem; font-size: 0.92rem; }
.field { margin-bottom: 1rem; }
.hint { color: var(--muted); font-size: 0.86rem; margin-top: 0.25rem; }
input[type="text"], input[type="email"], input[type="number"], select, textarea {
  width: 100%; border: 1px solid #D9D2C6; background: #FFFEFB;
  border-radius: 12px; padding: 0.85rem 0.95rem; color: var(--navy);
  outline: none; transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft);
}
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.85rem; }
.row-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.85rem; }

/* Results */
.results {
  padding: 1.25rem;
  background: linear-gradient(180deg, #FFFFFF, #F8F5EF);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.results h3 { margin-bottom: 0.35rem; }
.result-value {
  font-family: var(--font-display); font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: -0.03em; color: var(--navy); margin: 0.2rem 0 0.6rem;
}
.bar {
  height: 12px; border-radius: 999px; background: #E8E2D7; overflow: hidden; display: flex;
}
.bar > span { display: block; height: 100%; }
.bar .bills { background: var(--navy); }
.bar .room { background: var(--accent); }
.bar .needs { background: var(--navy); }
.bar .wants { background: var(--accent); }
.bar .save { background: #7C93B2; }
.stat-list { list-style: none; padding: 0; margin: 0.75rem 0 0; display: grid; gap: 0.55rem; }
.stat-list li {
  display: flex; justify-content: space-between; gap: 1rem;
  padding: 0.7rem 0; border-bottom: 1px solid rgba(231,226,217,0.9);
  color: var(--slate);
}
.stat-list strong { color: var(--navy); font-family: var(--font-display); font-weight: 700; }

/* Article */
.article { padding: 3rem 0 5rem; }
.article-body { max-width: 720px; }
.article-body p { color: var(--slate); font-size: 1.05rem; }
.article-body h2 { margin-top: 2rem; }
.article-body ul, .article-body ol { color: var(--slate); padding-left: 1.2rem; }
.article-body li { margin: 0.4rem 0; }
.callout {
  background: var(--accent-soft); border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1rem 1.1rem; color: var(--charcoal); margin: 1.5rem 0;
}

/* Affiliate soft CTA */
.soft-cta {
  margin-top: 1.25rem; padding: 1rem 1.1rem;
  border-radius: var(--radius-sm);
  background: rgba(15,23,42,0.03);
  border: 1px dashed rgba(15,23,42,0.12);
}
.soft-cta p { margin: 0 0 0.75rem; color: var(--slate); font-size: 0.95rem; }
.aff-links { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.aff-links a {
  text-decoration: none; font-size: 0.88rem; font-weight: 700;
  color: var(--navy); background: white; border: 1px solid var(--line);
  border-radius: 999px; padding: 0.5rem 0.8rem;
}
.aff-links a:hover { border-color: var(--accent); color: var(--accent); }

/* Footer */
.site-footer {
  margin-top: 3rem;
  background: var(--navy);
  color: #C9D3E2;
  padding: 3.5rem 0 2rem;
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem;
}
.site-footer a { color: #D7E0ED; text-decoration: none; }
.site-footer a:hover { color: white; }
.site-footer h4 { color: white; font-size: 0.95rem; margin-bottom: 0.9rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.45rem; }
.footer-bottom {
  margin-top: 2.5rem; padding-top: 1.25rem; border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  color: #91A0B6; font-size: 0.9rem;
}

/* Page heroes */
.page-hero {
  padding: 3.25rem 0 1.5rem;
}
.page-hero .lead { margin-top: 0.5rem; }

/* Tool layout */
.tool-layout {
  display: grid; grid-template-columns: 1fr 0.95fr; gap: 1.25rem; align-items: start;
}
.tool-note { color: var(--muted); font-size: 0.9rem; margin-top: 0.75rem; }

/* Download cards */
.download-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.download-card { padding: 1.35rem; }
.download-card h3 { margin-bottom: 0.35rem; }

/* Mobile */
@media (max-width: 900px) {
  .hero-grid, .grid-2, .tool-layout, .footer-grid, .download-grid, .row-3 { grid-template-columns: 1fr; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .nav-links {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: rgba(247,244,239,0.98); border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; padding: 1rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.7rem 0.4rem; }
  .menu-btn { display: inline-flex; }
  .metric-row { grid-template-columns: 1fr; }
  .row-2 { grid-template-columns: 1fr; }
  .section { padding: 3.5rem 0; }
}

/* Utilities */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-0 { margin-bottom: 0; }
.center { text-align: center; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}