/*
Theme Name: AI Not AI
Theme URI: https://ainotai.online
Author: AI Not AI
Author URI: https://ainotai.online
Description: A fast, single-purpose AI tools suite — text detection, humanizing, token counting, cost calculators, and prompt utilities. Built for speed, clarity, and trustworthy results.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: ai-toolkit
*/

/* ==========================================================================
   DESIGN TOKENS
   Signature: the "reading" gauge — every tool returns a dial, not a black box.
   Palette: instrument-panel navy + warm amber signal, on soft paper.
   Type: Space Grotesk (display) / Inter (body) / JetBrains Mono (data & numbers)
   ========================================================================== */

:root {
  /* Color */
  --paper: #FAF9F5;
  --paper-dim: #F1EFE9;
  --ink: #15181D;
  --ink-soft: #4B5259;
  --navy: #17324A;
  --navy-deep: #0E2233;
  --teal: #2A7F7E;
  --amber: #F2A93B;
  --amber-deep: #D98F1E;
  --red-flag: #C1503F;
  --green-ok: #3F8F5F;
  --line: #E3DFD5;
  --line-strong: #CFC9BB;
  --white: #FFFFFF;

  /* Type */
  --font-display: "Space Grotesk", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Courier New", monospace;

  /* Scale */
  --step--1: clamp(0.83rem, 0.8rem + 0.15vw, 0.9rem);
  --step-0: clamp(1rem, 0.96rem + 0.2vw, 1.1rem);
  --step-1: clamp(1.2rem, 1.1rem + 0.4vw, 1.4rem);
  --step-2: clamp(1.5rem, 1.3rem + 0.8vw, 1.9rem);
  --step-3: clamp(1.9rem, 1.6rem + 1.4vw, 2.6rem);
  --step-4: clamp(2.4rem, 1.9rem + 2.2vw, 3.6rem);

  /* Layout */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --container: 1140px;
  --shadow-card: 0 1px 2px rgba(23,50,74,0.06), 0 8px 24px rgba(23,50,74,0.06);
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--navy-deep);
  line-height: 1.15;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}
h1 { font-size: var(--step-4); }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-2); }
h4 { font-size: var(--step-1); }

p { margin: 0 0 1.1em; }
a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 2px;
}

img { max-width: 100%; display: block; }
ul, ol { padding-left: 1.3em; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--teal);
  font-weight: 600;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step--1);
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--navy); color: var(--white); }
.btn-primary:hover { background: var(--navy-deep); box-shadow: var(--shadow-card); }
.btn-amber { background: var(--amber); color: var(--navy-deep); }
.btn-amber:hover { background: var(--amber-deep); }
.btn-ghost { background: transparent; border-color: var(--line-strong); color: var(--navy); }
.btn-ghost:hover { border-color: var(--navy); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

/* ===================== HEADER ===================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250,249,245,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--navy-deep);
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: conic-gradient(from 220deg, var(--amber), var(--teal), var(--navy));
  position: relative;
}
.brand-mark::after {
  content: "";
  position: absolute; inset: 6px;
  background: var(--paper);
  border-radius: 5px;
}
.main-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0; padding: 0;
  align-items: center;
}
.main-nav a { color: var(--ink); font-weight: 500; font-size: var(--step--1); }
.main-nav a:hover { color: var(--teal); }
.nav-toggle { display: none; }

@media (max-width: 780px) {
  .main-nav { position: fixed; inset: 64px 0 0 0; background: var(--paper); transform: translateX(100%); transition: transform 0.2s ease; overflow-y: auto; }
  .main-nav.open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; align-items: flex-start; padding: 24px; gap: 18px; }
  .nav-toggle {
    display: inline-flex; background: none; border: none; cursor: pointer;
    flex-direction: column; gap: 5px; padding: 6px;
  }
  .nav-toggle span { width: 22px; height: 2px; background: var(--navy-deep); border-radius: 2px; }
}

/* ===================== FOOTER ===================== */
.site-footer {
  background: var(--navy-deep);
  color: #C9D3DA;
  margin-top: 80px;
  padding: 56px 0 28px;
}
.site-footer a { color: #E7ECEF; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
.footer-grid h4 { color: #fff; font-size: var(--step--1); text-transform: uppercase; letter-spacing: 0.06em; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 8px; font-size: var(--step--1); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 20px;
  font-size: var(--step--1);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  color: #93A2AC;
}
@media (max-width: 780px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

/* ===================== HERO / HOMEPAGE ===================== */
.hero {
  padding: 72px 0 56px;
  position: relative;
  overflow: hidden;
}
.hero-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero h1 { margin-bottom: 0.3em; }
.hero .lede { font-size: var(--step-1); color: var(--ink-soft); max-width: 46ch; }
.hero-cta { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
@media (max-width: 860px) { .hero-inner { grid-template-columns: 1fr; } }

/* Gauge signature element */
.gauge-wrap { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.gauge { width: 220px; height: 220px; }
.gauge-value {
  font-family: var(--font-mono);
  font-weight: 700;
  fill: var(--navy-deep);
}
.gauge-label { font-family: var(--font-mono); font-size: var(--step--1); color: var(--ink-soft); text-align: center; }

/* Category / tool grid */
.section { padding: 56px 0; }
.section-head { max-width: 60ch; margin-bottom: 32px; }
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.tool-card {
  padding: 24px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  display: flex; flex-direction: column; gap: 10px;
}
.tool-card:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(23,50,74,0.12); text-decoration: none; }
.tool-card .tool-icon {
  width: 42px; height: 42px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: var(--paper-dim); color: var(--navy);
  font-family: var(--font-mono); font-weight: 700;
}
.tool-card h3 { font-size: 1.15rem; margin-bottom: 2px; color: var(--navy-deep); }
.tool-card p { font-size: var(--step--1); color: var(--ink-soft); margin-bottom: 0; }
.category-band {
  display: flex; align-items: baseline; gap: 12px; margin: 48px 0 20px;
  border-bottom: 1px solid var(--line); padding-bottom: 10px;
}
.category-band h2 { font-size: var(--step-2); margin: 0; }
.category-band span { color: var(--ink-soft); font-size: var(--step--1); }

/* ===================== TOOL PAGE ===================== */
.tool-hero {
  background: var(--navy-deep);
  color: #EDEFF1;
  padding: 48px 0 40px;
}
.tool-hero .eyebrow { color: var(--amber); }
.tool-hero h1 { color: #fff; }
.tool-hero p.lede { color: #C4CCD1; max-width: 60ch; }

.tool-app {
  margin-top: -60px;
  margin-bottom: 40px;
}
.tool-app .card { padding: 28px; }

.tool-field {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  padding: 14px;
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink);
  resize: vertical;
  min-height: 160px;
}
.tool-field:focus { border-color: var(--teal); outline: none; box-shadow: 0 0 0 3px rgba(42,127,126,0.15); }
.tool-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-top: 14px; }
.tool-stat-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px,1fr)); gap: 14px; margin-top: 18px; }
.stat-box { background: var(--paper-dim); border-radius: var(--radius-sm); padding: 14px; text-align: center; }
.stat-box .num { font-family: var(--font-mono); font-size: 1.6rem; font-weight: 700; color: var(--navy-deep); display: block; }
.stat-box .lab { font-size: 0.78rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.04em; }
.result-verdict { margin-top: 18px; padding: 16px 18px; border-radius: var(--radius-sm); font-weight: 600; display: none; }
.result-verdict.show { display: block; }
.verdict-human { background: #E7F3EA; color: var(--green-ok); }
.verdict-ai { background: #FBE9E6; color: var(--red-flag); }
.verdict-mixed { background: #FCF3E0; color: var(--amber-deep); }
.select-input, .text-input {
  font-family: var(--font-body); padding: 10px 12px; border-radius: var(--radius-sm);
  border: 1.5px solid var(--line-strong); background: #fff;
}
table.compare-table { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: var(--step--1); }
table.compare-table th, table.compare-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
table.compare-table th { font-family: var(--font-mono); text-transform: uppercase; font-size: 0.75rem; color: var(--ink-soft); }

/* Prompt library */
.prompt-lib-grid { display: grid; grid-template-columns: 220px 1fr; gap: 24px; }
.prompt-cat-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 4px; }
.prompt-cat-list button {
  text-align: left; width: 100%; padding: 9px 12px; background: none; border: none; border-radius: 8px;
  cursor: pointer; font-size: var(--step--1); color: var(--ink-soft);
}
.prompt-cat-list button.active, .prompt-cat-list button:hover { background: var(--paper-dim); color: var(--navy-deep); font-weight: 600; }
.prompt-item { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 16px; margin-bottom: 10px; }
.prompt-item h4 { margin: 0 0 6px; font-size: 1rem; }
.prompt-item pre { white-space: pre-wrap; font-family: var(--font-mono); font-size: 0.85rem; background: var(--paper-dim); padding: 10px; border-radius: 6px; margin: 8px 0; }
@media (max-width: 780px) { .prompt-lib-grid { grid-template-columns: 1fr; } }

/* ===================== ARTICLE ===================== */
.article-wrap { display: grid; grid-template-columns: 1fr 260px; gap: 48px; padding: 56px 0; }
.article-body h2 { margin-top: 1.6em; font-size: var(--step-2); }
.article-body h3 { margin-top: 1.3em; font-size: var(--step-1); }
.article-body ul, .article-body ol { margin-bottom: 1.2em; }
.article-body blockquote {
  border-left: 3px solid var(--amber);
  margin: 1.6em 0; padding: 4px 0 4px 20px;
  color: var(--ink-soft); font-style: italic;
}
.toc { position: sticky; top: 100px; align-self: start; }
.toc h4 { font-size: var(--step--1); text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-soft); }
.toc ol { list-style: none; padding: 0; margin: 0; counter-reset: toc; }
.toc li { counter-increment: toc; margin-bottom: 10px; font-size: 0.88rem; }
.toc a { color: var(--ink); }
.toc a::before { content: counter(toc, decimal-leading-zero) "  "; color: var(--amber-deep); font-family: var(--font-mono); }
@media (max-width: 900px) { .article-wrap { grid-template-columns: 1fr; } .toc { display: none; } }

/* FAQ */
.faq-list { margin-top: 20px; }
.faq-item { border-bottom: 1px solid var(--line); padding: 16px 0; }
.faq-item summary { cursor: pointer; font-weight: 600; font-family: var(--font-display); font-size: 1.02rem; color: var(--navy-deep); list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.3rem; color: var(--amber-deep); flex-shrink: 0; }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p { margin-top: 10px; color: var(--ink-soft); }

/* Legal / static pages */
.static-page { padding: 56px 0; max-width: 78ch; margin: 0 auto; }
.static-page h2 { margin-top: 1.6em; }

/* Utility */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.small { font-size: var(--step--1); color: var(--ink-soft); }
.badge { display: inline-block; background: var(--paper-dim); color: var(--navy); font-family: var(--font-mono); font-size: 0.72rem; padding: 3px 8px; border-radius: 20px; text-transform: uppercase; letter-spacing: 0.04em; }