/* ==========================================================================
   Freelance Toolkit — Design System
   A ledger / stationery inspired system: paper surfaces, ink typography,
   hairline rules instead of shadows, wax-seal amber for action.
   ========================================================================== */

:root {
  /* Color */
  --ink-900: #1c2321;
  --ink-700: #33413d;
  --ink-500: #5b6a65;
  --ink-300: #8b968f;
  --paper: #faf8f3;
  --paper-2: #f1ece0;
  --paper-3: #e9e2d1;
  --teal: #2b5d62;
  --teal-dark: #1d4145;
  --teal-tint: #e4eeed;
  --amber: #c98a3e;
  --amber-dark: #a86f2c;
  --amber-tint: #f6e9d5;
  --danger: #b3462c;
  --danger-tint: #f6e2da;
  --success: #4f7942;
  --success-tint: #e6ede1;
  --line: #ddd5c2;
  --line-strong: #c7bda3;

  /* Type */
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Layout */
  --max-w: 1180px;
  --radius-sm: 3px;
  --radius-md: 6px;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
}

@media (prefers-color-scheme: dark) {
  /* Intentionally not auto-switching to dark — the paper/ink concept is the
     brand identity. Light mode only, kept crisp and legible. */
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink-900);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

a { color: var(--teal); text-decoration-color: var(--line-strong); }
a:hover { color: var(--teal-dark); }

:focus-visible {
  outline: 2px solid var(--amber-dark);
  outline-offset: 2px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 var(--space-2);
  color: var(--ink-900);
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.1rem, 4.5vw, 3.4rem); font-weight: 560; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.3rem; }
p { margin: 0 0 var(--space-2); max-width: 62ch; color: var(--ink-700); }
.lede { font-size: 1.15rem; color: var(--ink-700); max-width: 56ch; }

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.hairline { border: none; border-top: 1px solid var(--line); margin: var(--space-4) 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-body);
  font-size: 0.97rem;
  font-weight: 600;
  padding: 0.75em 1.4em;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
  line-height: 1.2;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--amber); color: #241505; border-color: var(--amber-dark); }
.btn-primary:hover { background: var(--amber-dark); color: #fff; }
.btn-ink { background: var(--teal); color: var(--paper); border-color: var(--teal-dark); }
.btn-ink:hover { background: var(--teal-dark); }
.btn-ghost { background: transparent; color: var(--ink-900); border-color: var(--line-strong); }
.btn-ghost:hover { background: var(--paper-2); }
.btn-sm { padding: 0.5em 1em; font-size: 0.88rem; }
.btn-danger { background: var(--danger-tint); color: var(--danger); border-color: #e2b6a4; }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky; top: 0; z-index: 40;
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--ink-900); }
.brand-mark {
  width: 34px; height: 34px; border-radius: var(--radius-sm);
  background: var(--teal); color: var(--paper);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 600; font-size: 1.1rem;
}
.brand-word { font-family: var(--font-display); font-size: clamp(0.98rem, 3.6vw, 1.2rem); font-weight: 600; letter-spacing: -0.01em; white-space: nowrap; }
.brand-word em { color: var(--teal); font-style: normal; }

.nav-links { display: flex; align-items: center; gap: var(--space-3); list-style: none; margin: 0; padding: 0; }
.nav-links a { color: var(--ink-700); text-decoration: none; font-size: 0.95rem; font-weight: 500; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--teal-dark); }
.nav-cta { display: none; }
@media (min-width: 860px) { .nav-cta { display: inline-flex; } }

.nav-toggle {
  display: inline-flex; background: none; border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm); padding: 8px 10px; cursor: pointer;
}
@media (min-width: 860px) { .nav-toggle { display: none; } }
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink-900); margin: 3px 0; }

.mobile-nav {
  display: none; flex-direction: column; gap: 0; border-bottom: 1px solid var(--line);
  background: var(--paper-2);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  padding: 14px var(--space-3); text-decoration: none; color: var(--ink-900);
  border-top: 1px solid var(--line); font-weight: 500;
}
@media (min-width: 860px) {
  .nav-links, .nav-cta:not(.mobile-only) { display: flex; }
}
.desktop-only { display: none; }
@media (min-width: 860px) { .desktop-only { display: flex; } .mobile-only-toggle { display: none; } }

/* ---------- Hero ---------- */
.hero { padding: var(--space-6) 0 var(--space-5); position: relative; overflow: hidden; }
.hero-grid { display: grid; gap: var(--space-4); align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5em;
  background: var(--amber-tint); color: var(--amber-dark);
  border: 1px solid #e6cd9f; border-radius: 999px;
  padding: 0.35em 0.9em 0.35em 0.6em; font-size: 0.82rem; font-weight: 600;
  animation: seal-in 0.5s ease both;
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--amber-dark); }
@keyframes seal-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero h1 { animation: rise-in 0.7s ease both 0.1s; }
.hero .lede { animation: rise-in 0.7s ease both 0.22s; }
.hero .hero-actions { animation: rise-in 0.7s ease both 0.34s; }
@keyframes rise-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-actions { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--space-3); }
.hero-stats { display: flex; gap: var(--space-4); margin-top: var(--space-4); flex-wrap: wrap; }
.hero-stat b { display: block; font-family: var(--font-display); font-size: 1.8rem; color: var(--teal-dark); }
.hero-stat span { font-size: 0.85rem; color: var(--ink-500); }

/* ---------- Section headings ---------- */
.section { padding: var(--space-5) 0; }
.section-head { max-width: 62ch; margin-bottom: var(--space-4); }
.section-tag { color: var(--teal-dark); font-weight: 600; font-size: 0.85rem; margin-bottom: 0.4em; display: block; }

/* ---------- Tool grid & cards ---------- */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: var(--space-3); }
.tool-card {
  position: relative;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-left: 4px solid var(--cat-color, var(--teal));
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  text-decoration: none;
  color: var(--ink-900);
  display: flex; flex-direction: column; gap: 0.6rem;
  transition: transform 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}
.tool-card:hover { transform: translateY(-3px); background: var(--paper); border-color: var(--line-strong); }
.tool-card .tool-icon {
  width: 38px; height: 38px; display: flex; align-items: center; justify-content: center;
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-sm);
  color: var(--cat-color, var(--teal));
}
.tool-card h3 { font-size: 1.08rem; margin-bottom: 0.15em; }
.tool-card p { font-size: 0.92rem; margin-bottom: 0; color: var(--ink-500); }
.tool-card .tool-tag {
  align-self: flex-start; font-size: 0.72rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--cat-color, var(--teal)); margin-top: auto;
}
.tool-card .tool-open { position: absolute; top: var(--space-3); right: var(--space-3); color: var(--ink-300); font-size: 1.1rem; }

.filter-bar { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: var(--space-3); }
.filter-chip {
  border: 1px solid var(--line-strong); background: var(--paper); color: var(--ink-700);
  padding: 0.4em 0.9em; border-radius: 999px; font-size: 0.85rem; cursor: pointer; font-family: var(--font-body);
}
.filter-chip[aria-pressed="true"] { background: var(--teal); border-color: var(--teal-dark); color: var(--paper); }
.search-row { display: flex; gap: 0.6rem; margin-bottom: var(--space-3); flex-wrap: wrap; }
.search-input {
  flex: 1 1 260px; padding: 0.8em 1em; border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: 0.97rem; background: var(--paper);
}

/* ---------- How it works ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); }
.step { border-top: 2px solid var(--line-strong); padding-top: 0.8rem; }
.step .step-num { font-family: var(--font-display); font-style: italic; color: var(--amber-dark); font-size: 1.3rem; }
.step h3 { font-size: 1.05rem; margin-top: 0.2em; }
.step p { font-size: 0.92rem; }

/* ---------- Panels / forms (tool UI shell) ---------- */
.tool-shell { padding: var(--space-4) 0 var(--space-6); }
.tool-head { margin-bottom: var(--space-4); }
.breadcrumbs { font-size: 0.85rem; color: var(--ink-500); margin-bottom: var(--space-2); }
.breadcrumbs a { color: var(--ink-500); text-decoration: none; }
.breadcrumbs a:hover { color: var(--teal-dark); }
.tool-layout { display: grid; gap: var(--space-4); grid-template-columns: 1fr; align-items: start; }
@media (min-width: 980px) { .tool-layout.with-side { grid-template-columns: 1fr minmax(340px, 400px); } }
@media (min-width: 1180px) { .tool-layout.with-side { grid-template-columns: 1fr 400px; } }

.panel {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-md);
  padding: var(--space-3);
}
.panel + .panel { margin-top: var(--space-3); }
.panel h2, .panel h3 { margin-top: 0; }

.field { margin-bottom: var(--space-2); }
.field label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--ink-700); margin-bottom: 0.35em; }
.field .hint { font-size: 0.78rem; color: var(--ink-500); margin-top: 0.3em; }
.field input, .field select, .field textarea {
  width: 100%; padding: 0.7em 0.85em; border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: 0.97rem; background: var(--paper); color: var(--ink-900);
}
.field textarea { resize: vertical; min-height: 90px; }
.field-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: var(--space-2); }
.inline-actions { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-top: var(--space-2); }

table.data-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
table.data-table th { text-align: left; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-500); border-bottom: 1px solid var(--line-strong); padding: 0.5em 0.4em; }
table.data-table td { border-bottom: 1px solid var(--line); padding: 0.55em 0.4em; vertical-align: top; }
table.data-table td input, table.data-table td select { border: 1px solid transparent; background: transparent; padding: 0.3em; }
table.data-table td input:focus, table.data-table td select:focus { background: var(--paper); border-color: var(--line-strong); }
.row-remove { color: var(--danger); background: none; border: none; cursor: pointer; font-size: 1.1rem; }

.summary-line { display: flex; justify-content: space-between; padding: 0.4em 0; font-size: 0.95rem; }
.summary-line.total { font-weight: 700; font-size: 1.15rem; border-top: 1px solid var(--line-strong); padding-top: 0.7em; margin-top: 0.3em; }

.badge { display: inline-block; padding: 0.2em 0.65em; border-radius: 999px; font-size: 0.75rem; font-weight: 600; }
.badge-paid { background: var(--success-tint); color: var(--success); }
.badge-due { background: var(--amber-tint); color: var(--amber-dark); }
.badge-overdue { background: var(--danger-tint); color: var(--danger); }

.empty-state { text-align: center; padding: var(--space-4) var(--space-2); color: var(--ink-500); border: 1px dashed var(--line-strong); border-radius: var(--radius-md); }

.save-toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--ink-900); color: var(--paper); padding: 0.7em 1.2em; border-radius: var(--radius-sm);
  font-size: 0.9rem; opacity: 0; pointer-events: none; transition: opacity 0.25s ease, transform 0.25s ease; z-index: 100;
}
.save-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Preview / document look ---------- */
.doc-preview {
  background: #fff; border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  padding: var(--space-3); font-size: 0.92rem; color: #1a1a1a;
  box-shadow: 0 1px 0 var(--line-strong);
}
.doc-preview h2 { font-size: 1.4rem; }
.doc-preview .doc-meta { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; margin-bottom: var(--space-3); }
.doc-preview table { width: 100%; border-collapse: collapse; margin: var(--space-2) 0; }
.doc-preview th, .doc-preview td { border-bottom: 1px solid #e2e2e2; padding: 0.5em; text-align: left; font-size: 0.88rem; }
.doc-preview .doc-total { text-align: right; font-size: 1.1rem; font-weight: 700; margin-top: 0.6em; }

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  cursor: pointer; padding: var(--space-2) 0; font-weight: 600; font-family: var(--font-display); font-size: 1.05rem;
  list-style: none; display: flex; justify-content: space-between; align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.3rem; color: var(--amber-dark); }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p { padding-bottom: var(--space-2); }

/* ---------- Cards for about/contact ---------- */
.info-grid { display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); }
.info-card { border: 1px solid var(--line); border-radius: var(--radius-md); padding: var(--space-3); background: var(--paper-2); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--paper-2); margin-top: var(--space-6); }
.footer-grid { display: grid; gap: var(--space-4); grid-template-columns: 2fr repeat(2, 1fr); padding: var(--space-5) 0 var(--space-3); }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-500); margin-bottom: 0.8em; font-family: var(--font-body); }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.55em; }
.footer-grid a { color: var(--ink-700); text-decoration: none; font-size: 0.92rem; }
.footer-grid a:hover { color: var(--teal-dark); }
.footer-bottom { border-top: 1px solid var(--line); padding: var(--space-2) 0 var(--space-4); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.6rem; font-size: 0.82rem; color: var(--ink-500); }

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.stack-sm > * + * { margin-top: var(--space-2); }
.container-narrow { max-width: 760px; margin: 0 auto; }
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--ink-900); color: var(--paper);
  padding: 0.6em 1em; z-index: 100;
}
.skip-link:focus { left: var(--space-2); top: var(--space-2); }