/* TextKit — Apple Design System — shared.css */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --white: #ffffff;
  --black: #000000;
  --light-bg: #f5f5f7;
  --dark-text: #1d1d1f;
  --mid-text: #6e6e73;
  --blue: #0071e3;
  --blue-hover: #0077ed;
  --green: #1d9e45;
  --border: rgba(0,0,0,0.1);
  --border-focus: rgba(0,113,227,0.5);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.1);
  --font: -apple-system, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
  --nav-h: 48px;
  --radius-card: 20px;
  --radius-input: 12px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--dark-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 9999;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  background: rgba(255,255,255,0.72);
  border-bottom: 1px solid rgba(0,0,0,0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
}

.nav-logo {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--dark-text);
  text-decoration: none;
}

.nav-back {
  font-size: 13px;
  color: var(--blue);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-back:hover { text-decoration: underline; }

/* PAGE WRAPPER */
.page {
  max-width: 980px;
  margin: 0 auto;
  padding: calc(var(--nav-h) + 60px) 24px 100px;
}

/* TOOL HERO */
.tool-hero {
  text-align: center;
  margin-bottom: 56px;
}

.tool-hero-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 12px;
}

.tool-hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--dark-text);
  margin-bottom: 14px;
}

.tool-hero p {
  font-size: 19px;
  color: var(--mid-text);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.5;
  font-weight: 400;
}

/* STATS ROW */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.stat {
  background: var(--light-bg);
  border-radius: 16px;
  padding: 20px 16px;
  text-align: center;
}

.stat.accent {
  background: var(--blue);
}

.stat-value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--dark-text);
  line-height: 1;
  margin-bottom: 6px;
}
.stat.accent .stat-value { color: white; }

.stat-label {
  font-size: 12px;
  color: var(--mid-text);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-weight: 500;
}
.stat.accent .stat-label { color: rgba(255,255,255,0.75); }

/* TEXTAREA */
textarea {
  width: 100%;
  background: var(--light-bg);
  border: 1.5px solid transparent;
  border-radius: var(--radius-input);
  padding: 20px;
  font-family: var(--font);
  font-size: 16px;
  color: var(--dark-text);
  resize: vertical;
  outline: none;
  line-height: 1.6;
  transition: border-color 0.2s, background 0.2s;
  min-height: 240px;
  -webkit-appearance: none;
}
textarea:focus {
  border-color: var(--blue);
  background: var(--white);
}
textarea::placeholder { color: #a1a1a6; }
textarea[readonly] {
  background: var(--light-bg);
  cursor: default;
}

/* PANEL LABELS */
.panel-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mid-text);
  margin-bottom: 8px;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 400;
  padding: 9px 20px;
  border-radius: 980px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
  -webkit-appearance: none;
}

.btn-blue { background: var(--blue); color: white; }
.btn-blue:hover { background: var(--blue-hover); }

.btn-outline {
  background: transparent;
  color: var(--blue);
  border: 1.5px solid rgba(0,113,227,0.35);
}
.btn-outline:hover { border-color: var(--blue); }

.btn-neutral {
  background: var(--light-bg);
  color: var(--dark-text);
}
.btn-neutral:hover { background: #e8e8ed; }

/* ACTION ROW */
.action-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
}

/* TWO COL */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 640px) { .two-col { grid-template-columns: 1fr; } }

/* MODE PILLS */
.mode-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.pill {
  font-family: var(--font);
  font-size: 14px;
  font-weight: 400;
  padding: 8px 18px;
  border-radius: 980px;
  border: 1.5px solid rgba(0,0,0,0.15);
  background: var(--white);
  color: var(--dark-text);
  cursor: pointer;
  transition: all 0.15s;
  -webkit-appearance: none;
}
.pill:hover { border-color: var(--blue); color: var(--blue); }
.pill.active {
  background: var(--blue);
  color: white;
  border-color: var(--blue);
}

/* EXTRA INFO ROW */
.info-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  background: var(--light-bg);
  border-radius: 16px;
  padding: 18px 22px;
  margin-top: 16px;
}
.info-item {
  font-size: 14px;
  color: var(--mid-text);
}
.info-item strong { color: var(--dark-text); font-weight: 500; }

/* SEO CONTENT */
.seo-content {
  margin-top: 80px;
  border-top: 1px solid rgba(0,0,0,0.08);
  padding-top: 60px;
}

.seo-content h2 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.seo-content p {
  font-size: 16px;
  color: var(--mid-text);
  line-height: 1.7;
  margin-bottom: 16px;
  max-width: 700px;
}

.faq {
  margin-top: 40px;
  display: grid;
  gap: 20px;
}

.faq-item {
  background: var(--light-bg);
  border-radius: 16px;
  padding: 24px 28px;
}

.faq-item h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.faq-item p {
  font-size: 15px;
  color: var(--mid-text);
  line-height: 1.6;
  margin: 0;
}

/* FOOTER */
footer {
  background: var(--light-bg);
  border-top: 1px solid rgba(0,0,0,0.1);
  padding: 40px 24px;
  font-size: 13px;
  color: var(--mid-text);
}
.footer-inner {
  max-width: 980px;
  margin: 0 auto;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(0,0,0,0.1);
}
.footer-links a {
  color: var(--mid-text);
  text-decoration: none;
  font-size: 13px;
}
.footer-links a:hover { color: var(--dark-text); }

/* ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.anim { animation: fadeUp 0.6s ease forwards; }
.anim-1 { animation-delay: 0.05s; opacity: 0; }
.anim-2 { animation-delay: 0.15s; opacity: 0; }
.anim-3 { animation-delay: 0.25s; opacity: 0; }
.anim-4 { animation-delay: 0.35s; opacity: 0; }

@media (max-width: 768px) {
  .page { padding-top: calc(var(--nav-h) + 36px); }
}