/* =========================================================
   TikTok Bio Ideas Generator — SEOWebChecker.com
   ========================================================= */

:root {
  --bg: #ffffff;
  --bg-alt: #f7f7fb;
  --surface: #ffffff;
  --text: #14141a;
  --text-muted: #5c5c6b;
  --border: #e6e6ef;
  --accent: #fe2c55;
  --accent-2: #25f4ee;
  --accent-grad: linear-gradient(135deg, #fe2c55 0%, #ff6b8b 50%, #25f4ee 100%);
  --shadow: 0 4px 20px rgba(20, 20, 26, 0.06);
  --shadow-lg: 0 14px 40px rgba(20, 20, 26, 0.12);
  --radius: 14px;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-head: 'Outfit', system-ui, sans-serif;
}

[data-theme="dark"] {
  --bg: #0f0f14;
  --bg-alt: #17171f;
  --surface: #1b1b24;
  --text: #f2f2f7;
  --text-muted: #a3a3b3;
  --border: #2b2b38;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 14px 40px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background .25s ease, color .25s ease;
}
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.2; margin: 0 0 .5em; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.skip-link { position: absolute; left: -999px; top: 0; background: var(--accent); color: #fff; padding: 10px 16px; z-index: 999; border-radius: 0 0 8px 0; }
.skip-link:focus { left: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; font-weight: 600; font-size: .95rem;
  border: 1px solid transparent; cursor: pointer; transition: transform .15s ease, box-shadow .15s ease, opacity .2s;
  font-family: var(--font-body);
}
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--accent-grad); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { box-shadow: var(--shadow-lg); }
.btn-outline { background: transparent; border-color: var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-icon { background: var(--surface); border: 1px solid var(--border); width: 40px; height: 40px; border-radius: 50%; padding: 0; }
.btn:disabled { opacity: .6; cursor: not-allowed; transform: none; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 500;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.navbar { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; gap: 12px; }
.logo { display: flex; align-items: center; gap: 8px; font-family: var(--font-head); font-weight: 800; font-size: 1.25rem; }
.logo span { background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-links > li { position: relative; }
.nav-links > li > a, .nav-links > li > button.nav-toggle {
  display: flex; align-items: center; gap: 4px; padding: 10px 14px; border-radius: 8px; font-weight: 500; font-size: .95rem;
  background: none; border: none; cursor: pointer; color: var(--text); font-family: var(--font-body);
}
.nav-links > li > a:hover, .nav-links > li > button.nav-toggle:hover { background: var(--bg-alt); color: var(--accent); }

.mega-dropdown {
  position: absolute; top: 100%; left: 0; margin-top: 4px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: 18px; width: 620px;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px 24px;
  opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
  z-index: 600;
}
.nav-links > li.open .mega-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-dropdown a { display: block; padding: 9px 10px; border-radius: 8px; font-size: .9rem; color: var(--text-muted); }
.mega-dropdown a:hover { background: var(--bg-alt); color: var(--accent); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.theme-toggle svg { width: 18px; height: 18px; }
.hamburger { display: none; background: none; border: 1px solid var(--border); border-radius: 8px; width: 40px; height: 40px; cursor: pointer; }
.hamburger span { display: block; width: 18px; height: 2px; background: var(--text); margin: 4px auto; transition: .2s; }

/* ---------- Breadcrumb ---------- */
.breadcrumb { padding: 12px 0; font-size: .85rem; color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { margin: 0 6px; opacity: .5; }

/* ---------- Hero ---------- */
.hero { padding: 56px 0 40px; text-align: center; position: relative; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; border-radius: 999px;
  background: var(--bg-alt); border: 1px solid var(--border); font-size: .8rem; font-weight: 600; color: var(--accent);
  margin-bottom: 18px;
}
.hero h1 { font-size: clamp(2rem, 5vw, 3.1rem); font-weight: 800; max-width: 850px; margin: 0 auto .6em; }
.hero h1 .grad { background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { max-width: 620px; margin: 0 auto 30px; color: var(--text-muted); font-size: 1.08rem; }

/* ---------- Generator Card ---------- */
.generator-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 20px;
  box-shadow: var(--shadow-lg); padding: 28px; max-width: 760px; margin: 0 auto; text-align: left;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }
label { font-weight: 600; font-size: .88rem; }
label .req { color: var(--accent); }
input[type=text], select {
  padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg);
  color: var(--text); font-family: var(--font-body); font-size: .95rem; width: 100%;
}
input[type=text]:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.field-error { color: var(--accent); font-size: .78rem; min-height: 16px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.range-row { display: flex; align-items: center; gap: 10px; }
.range-row output { font-weight: 700; min-width: 24px; text-align: center; }
.form-footer { margin-top: 20px; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.form-hint { font-size: .78rem; color: var(--text-muted); }
.char-counter { font-size: .75rem; color: var(--text-muted); text-align: right; }

.spinner { width: 16px; height: 16px; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite; display: none; }
.btn.loading .spinner { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Results ---------- */
.results-section { padding: 50px 0; scroll-margin-top: 90px; }
.results-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.results-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.bio-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.bio-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 16px;
  display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; box-shadow: var(--shadow);
  animation: fadeUp .35s ease both;
}
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.bio-card p { margin: 0; font-size: .95rem; }
.bio-copy-btn { flex-shrink: 0; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 8px; width: 34px; height: 34px; cursor: pointer; }
.bio-copy-btn:hover { border-color: var(--accent); }
.post-actions { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
.alert { padding: 14px 16px; border-radius: 10px; font-size: .9rem; margin-bottom: 16px; display: none; }
.alert.show { display: block; }
.alert-error { background: rgba(254,44,85,.1); border: 1px solid rgba(254,44,85,.3); color: var(--accent); }

/* ---------- Reference links strip ---------- */
.ref-links { padding: 30px 0; background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.ref-links h2 { font-size: 1rem; margin-bottom: 14px; }
.ref-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 8px 20px; }
.ref-grid a { font-size: .85rem; color: var(--text-muted); padding: 4px 0; }
.ref-grid a:hover { color: var(--accent); }

/* ---------- Features ---------- */
.section { padding: 64px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 40px; }
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.section-head p { color: var(--text-muted); }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.feature-card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 24px; box-shadow: var(--shadow); }
.feature-icon { width: 44px; height: 44px; border-radius: 12px; background: var(--accent-grad); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; color: #fff; }
.feature-card h3 { font-size: 1.05rem; }
.feature-card p { color: var(--text-muted); font-size: .9rem; margin: 0; }

/* ---------- How it works ---------- */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; counter-reset: step; }
.step { position: relative; padding-left: 50px; }
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0; width: 36px; height: 36px; border-radius: 50%;
  background: var(--accent-grad); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700;
}
.step h3 { font-size: 1rem; }
.step p { color: var(--text-muted); font-size: .88rem; margin: 0; }

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q { width: 100%; text-align: left; background: none; border: none; padding: 18px 4px; font-weight: 600; font-size: 1rem;
  cursor: pointer; display: flex; align-items: center; justify-content: space-between; color: var(--text); font-family: var(--font-body); }
.faq-icon { transition: transform .2s ease; flex-shrink: 0; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .25s ease; color: var(--text-muted); font-size: .92rem; }
.faq-item.open .faq-a { max-height: 300px; padding-bottom: 18px; }

/* ---------- Article ---------- */
.article-block { max-width: 780px; margin: 0 auto; color: var(--text-muted); font-size: .96rem; }
.article-block h2 { color: var(--text); }

/* ---------- CTA ---------- */
.cta-section { padding: 60px 0; text-align: center; }
.cta-box { background: var(--accent-grad); border-radius: 24px; padding: 48px 24px; color: #fff; }
.cta-box h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
.cta-box p { opacity: .92; max-width: 520px; margin: 0 auto 24px; }
.cta-buttons { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
.cta-buttons .btn-outline { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.5); color: #fff; }
.cta-buttons .btn-outline:hover { background: rgba(255,255,255,.22); }
.cta-buttons .btn-primary { background: #fff; color: #14141a; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-alt); border-top: 1px solid var(--border); padding: 50px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 30px; margin-bottom: 30px; }
.footer-col h4 { font-size: .88rem; text-transform: uppercase; letter-spacing: .04em; color: var(--text-muted); margin-bottom: 12px; }
.footer-col a { display: block; font-size: .88rem; padding: 4px 0; color: var(--text-muted); }
.footer-col a:hover { color: var(--accent); }
.footer-brand p { color: var(--text-muted); font-size: .88rem; max-width: 280px; }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 20px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: .8rem; color: var(--text-muted); }
.footer-bottom .disclaimer { max-width: 700px; }

/* ---------- Cookie banner ---------- */
.cookie-banner {
  position: fixed; bottom: 16px; left: 16px; right: 16px; max-width: 520px; margin: 0 auto;
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow-lg);
  padding: 18px 20px; z-index: 900; display: none; gap: 12px; flex-direction: column;
}
.cookie-banner.show { display: flex; }
.cookie-banner p { margin: 0; font-size: .85rem; color: var(--text-muted); }
.cookie-buttons { display: flex; gap: 10px; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 20px; right: 20px; background: var(--text); color: var(--bg);
  padding: 12px 18px; border-radius: 10px; font-size: .88rem; z-index: 1000; opacity: 0; transform: translateY(10px);
  transition: opacity .2s ease, transform .2s ease; pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 780px) {
  .nav-links { position: fixed; top: 64px; left: 0; right: 0; bottom: 0; background: var(--bg); flex-direction: column;
    align-items: stretch; padding: 16px; overflow-y: auto; transform: translateX(-100%); transition: transform .25s ease; }
  .nav-links.open { transform: translateX(0); }
  .nav-links > li > a, .nav-links > li > button.nav-toggle { width: 100%; justify-content: space-between; }
  .mega-dropdown { position: static; width: 100%; box-shadow: none; border: none; grid-template-columns: 1fr; margin: 0 0 6px; padding: 6px 0 6px 14px; opacity: 1; visibility: visible; transform: none; display: none; }
  .nav-links > li.open .mega-dropdown { display: grid; }
  .hamburger { display: block; }
  .header-actions .nav-desktop-only { display: none; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; }
  .cookie-buttons { flex-direction: column; }
  .cookie-buttons .btn { width: 100%; }
}
body, .container { max-width: 100vw; }