/* ================================================================
   TikTok Caption Generator — Stylesheet
   Design tokens:
   Dark bg #0A0A0C · Panel #131316 · Cyan accent #00F2EA
   Pink accent #FE2C55 · Text #F5F5F7 · Muted #9A9AA5
   Display font: Outfit · Body font: Inter
   ================================================================ */

:root{
  --bg: #0A0A0C;
  --panel: #131317;
  --panel-2: #1B1B20;
  --border: #26262D;
  --text: #F5F5F7;
  --muted: #9A9AA5;
  --cyan: #00F2EA;
  --pink: #FE2C55;
  --gradient: linear-gradient(120deg, var(--cyan), var(--pink));
  --radius: 14px;
  --radius-sm: 8px;
  --font-display: 'Outfit', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --shadow: 0 8px 30px rgba(0,0,0,0.35);
  --max-w: 1160px;
}

[data-theme="light"]{
  --bg: #FAFAFB;
  --panel: #FFFFFF;
  --panel-2: #F2F2F5;
  --border: #E4E4E9;
  --text: #16161A;
  --muted: #62626B;
  --shadow: 0 8px 24px rgba(20,20,30,0.08);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background .25s ease, color .25s ease;
}
h1,h2,h3,h4{ font-family: var(--font-display); font-weight: 700; margin: 0 0 .5em; letter-spacing: -0.01em; }
p{ margin: 0 0 1em; color: var(--muted); }
a{ color: inherit; text-decoration: none; }
img{ max-width:100%; display:block; }
button{ font-family: inherit; }
ul{ margin:0; padding:0; list-style:none; }

.skip-link{
  position:absolute; left:-999px; top:0; background:var(--pink); color:#fff;
  padding:10px 16px; z-index:200; border-radius:0 0 8px 0;
}
.skip-link:focus{ left:0; }

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

.section-inner{ max-width: var(--max-w); margin: 0 auto; padding: 72px 24px; }
.section-inner.narrow{ max-width: 760px; }
.section-sub{ font-size: 1.05rem; margin-top: -.25em; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding: 13px 26px; border-radius: 999px; font-weight:600; font-size: .95rem;
  border: 1px solid transparent; cursor:pointer; transition: transform .15s ease, box-shadow .15s ease, opacity .15s ease;
  white-space:nowrap;
}
.btn:active{ transform: scale(.97); }
.btn-primary{ background: var(--gradient); color:#04141A; box-shadow: 0 6px 20px rgba(254,44,85,.25); }
.btn-primary:hover{ box-shadow: 0 8px 26px rgba(254,44,85,.4); }
.btn-secondary{ background: var(--panel-2); color: var(--text); border-color: var(--border); }
.btn-secondary:hover{ border-color: var(--cyan); }
.btn-ghost{ background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover{ border-color: var(--cyan); }
.btn-block{ width:100%; }
.btn-sm{ padding: 9px 16px; font-size:.85rem; }
.btn:disabled{ opacity:.6; cursor:not-allowed; transform:none; }

/* ================= HEADER ================= */
.site-header{
  position: sticky; top:0; z-index:100;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner{
  max-width: var(--max-w); margin:0 auto; padding: 14px 24px;
  display:flex; align-items:center; justify-content:space-between; gap: 20px;
}
.logo{ font-family: var(--font-display); font-weight:800; font-size:1.15rem; display:flex; align-items:center; }
.logo-mark{ background: var(--gradient); -webkit-background-clip:text; background-clip:text; color:transparent; }
.logo-tail{ color: var(--text); }

.main-nav ul{ display:flex; align-items:center; gap: 6px; }
.nav-link{
  background:none; border:none; color: var(--text); font-size:.95rem; font-weight:500;
  padding: 10px 14px; border-radius: 999px; cursor:pointer; display:flex; align-items:center; gap:6px;
}
.nav-link:hover{ background: var(--panel-2); }

.has-mega{ position: relative; }
.mega-panel{
  position:absolute; top: 100%; left:0; margin-top: 10px;
  background: var(--panel); border:1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px; display:none; gap: 24px; min-width: 560px; z-index: 50;
}
.has-mega.open .mega-panel{ display:flex; }
.mega-col{ display:flex; flex-direction:column; gap: 4px; min-width:160px; }
.mega-col a{ padding: 8px 10px; border-radius: var(--radius-sm); color: var(--muted); font-size:.9rem; }
.mega-col a:hover{ background: var(--panel-2); color: var(--text); }

.header-actions{ display:flex; align-items:center; gap: 10px; }
.icon-btn{
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  width: 40px; height:40px; border-radius:50%; display:flex; align-items:center; justify-content:center; cursor:pointer;
}
.icon-moon{ display:none; }
[data-theme="light"] .icon-sun{ display:none; }
[data-theme="light"] .icon-moon{ display:block; }

.hamburger{ display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:8px; }
.hamburger span{ width:22px; height:2px; background: var(--text); border-radius:2px; transition: .2s; }

.mobile-nav{ display:none; }

@media (max-width: 880px){
  .main-nav{ display:none; }
  .hamburger{ display:flex; }
  .mobile-nav{
    display:none; flex-direction:column; padding: 10px 24px 20px; border-top:1px solid var(--border);
    max-width:100vw; overflow-x:hidden;
  }
  .mobile-nav.open{ display:flex; }
  .mobile-nav > a, .mobile-nav summary{ padding: 12px 4px; border-bottom:1px solid var(--border); color: var(--text); font-weight:500; cursor:pointer; }
  .mobile-nav details a{ display:block; padding: 10px 4px 10px 16px; color: var(--muted); }
}

/* ================= BREADCRUMB ================= */
.breadcrumb{ border-bottom:1px solid var(--border); }
.breadcrumb-inner{
  max-width: var(--max-w); margin:0 auto; padding: 12px 24px; font-size:.85rem; color: var(--muted);
  display:flex; align-items:center; gap:8px; overflow-x:auto; white-space:nowrap;
}
.breadcrumb-inner a:hover{ color: var(--cyan); }

/* ================= HERO ================= */
.hero{ position:relative; overflow:hidden; padding: 90px 24px 60px; text-align:center; }
.hero-glow{
  position:absolute; inset: -20% -10% auto -10%; height: 520px;
  background: radial-gradient(60% 60% at 30% 20%, rgba(0,242,234,.18), transparent 70%),
              radial-gradient(50% 50% at 75% 10%, rgba(254,44,85,.16), transparent 70%);
  filter: blur(10px); pointer-events:none;
}
.hero-inner{ position:relative; max-width: 760px; margin:0 auto; }
.eyebrow{
  display:inline-block; font-size:.78rem; font-weight:600; letter-spacing:.04em; text-transform:uppercase;
  color: var(--cyan); background: rgba(0,242,234,.08); border:1px solid rgba(0,242,234,.25);
  padding: 6px 14px; border-radius:999px; margin-bottom: 20px;
}
.hero h1{ font-size: clamp(2.2rem, 5vw, 3.4rem); line-height:1.08; margin-bottom:.4em; }
.hero-sub{ font-size: 1.1rem; max-width: 560px; margin: 0 auto 32px; }
.hero-cta-row{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; margin-bottom: 48px; }
.hero-stats{ display:flex; gap: 40px; justify-content:center; flex-wrap:wrap; }
.hero-stats div{ display:flex; flex-direction:column; align-items:center; }
.hero-stats strong{ font-family: var(--font-display); font-size:1.6rem; }
.hero-stats span{ font-size:.8rem; color: var(--muted); }

/* ================= RELATED STRIP ================= */
.related-strip{ border-top:1px solid var(--border); border-bottom:1px solid var(--border); background: var(--panel); }
.related-inner{ max-width: var(--max-w); margin:0 auto; padding: 22px 24px; }
.related-title{ font-size:.8rem; text-transform:uppercase; letter-spacing:.05em; color: var(--muted); margin-bottom:12px; }
.related-scroll{ display:flex; gap:10px; overflow-x:auto; padding-bottom:4px; scrollbar-width: thin; }
.related-scroll a{
  flex: 0 0 auto; padding: 9px 16px; border:1px solid var(--border); border-radius:999px; font-size:.85rem; color: var(--muted);
}
.related-scroll a:hover{ color: var(--text); border-color: var(--cyan); }

/* ================= FEATURES ================= */
.features h2, .how-it-works h2, .generator h2, .about-content h2, .faq h2, .cta h2{ text-align:center; }
.features .section-sub, .how-it-works .section-sub{ text-align:center; margin-bottom: 40px; }
.feature-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-card{
  background: var(--panel); border:1px solid var(--border); border-radius: var(--radius);
  padding: 26px; transition: transform .18s ease, border-color .18s ease;
}
.feature-card:hover{ transform: translateY(-3px); border-color: var(--cyan); }
.feature-icon{ font-size:1.6rem; margin-bottom:10px; }
.feature-card h3{ font-size:1.05rem; margin-bottom:.35em; }
.feature-card p{ font-size:.92rem; margin:0; }

@media (max-width: 760px){ .feature-grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px){ .feature-grid{ grid-template-columns: 1fr; } }

/* ================= HOW IT WORKS ================= */
.how-it-works{ background: var(--panel); border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.steps-grid{ display:grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
.step-card{ text-align:center; padding: 10px; }
.step-num{
  width:44px; height:44px; border-radius:50%; background: var(--gradient); color:#04141A;
  display:flex; align-items:center; justify-content:center; font-weight:800; margin: 0 auto 14px; font-family: var(--font-display);
}
.step-card h3{ font-size:1rem; }
.step-card p{ font-size:.88rem; }
@media (max-width: 760px){ .steps-grid{ grid-template-columns: 1fr 1fr; } }

/* ================= GENERATOR ================= */
.caption-form{ background: var(--panel); border:1px solid var(--border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.hp-field{ position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden; }
.form-group{ margin-bottom: 20px; }
.form-group label{ display:block; font-size:.88rem; font-weight:600; margin-bottom:8px; }
.req{ color: var(--pink); }
textarea, select, input[type="text"]{
  width:100%; background: var(--panel-2); border:1px solid var(--border); color: var(--text);
  border-radius: var(--radius-sm); padding: 12px 14px; font-family: inherit; font-size: .95rem; resize: vertical;
  transition: border-color .15s ease;
}
textarea:focus, select:focus{ border-color: var(--cyan); }
.field-row{ display:flex; justify-content:space-between; margin-top:6px; font-size:.78rem; color: var(--muted); }
.form-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width:600px){ .form-grid{ grid-template-columns: 1fr; } }

.toggle-row{ display:flex; gap: 26px; flex-wrap:wrap; margin: 22px 0; }
.toggle{ display:flex; align-items:center; gap:10px; cursor:pointer; font-size:.9rem; }
.toggle input{ display:none; }
.toggle-track{ width:40px; height:22px; border-radius:999px; background: var(--border); position:relative; transition: background .2s; flex-shrink:0; }
.toggle-thumb{ position:absolute; top:2px; left:2px; width:18px; height:18px; border-radius:50%; background:#fff; transition: transform .2s; }
.toggle input:checked + .toggle-track{ background: var(--gradient); }
.toggle input:checked + .toggle-track .toggle-thumb{ transform: translateX(18px); }

.form-error{
  background: rgba(254,44,85,.1); border:1px solid rgba(254,44,85,.4); color:#ff8fa3;
  padding: 12px 14px; border-radius: var(--radius-sm); margin-bottom: 18px; font-size:.88rem;
}

.btn-spinner{
  width:16px; height:16px; border-radius:50%; border: 2px solid rgba(4,20,26,.3); border-top-color:#04141A;
  animation: spin .7s linear infinite;
}
@keyframes spin{ to{ transform: rotate(360deg); } }

/* ---------- Results ---------- */
.results{ margin-top: 34px; }
.results-header{ display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:12px; margin-bottom:16px; }
.results-actions{ display:flex; gap:10px; }
.caption-list{ display:flex; flex-direction:column; gap: 12px; }
.caption-list li{
  background: var(--panel); border:1px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px; display:flex; justify-content:space-between; align-items:flex-start; gap: 14px;
}
.caption-text{ font-size:.95rem; }
.copy-caption-btn{
  flex-shrink:0; background: var(--panel-2); border:1px solid var(--border); color: var(--text);
  padding: 7px 14px; border-radius:999px; font-size:.8rem; cursor:pointer;
}
.copy-caption-btn:hover{ border-color: var(--cyan); }
.post-actions{ display:flex; gap: 12px; margin-top: 24px; flex-wrap:wrap; }

/* ================= ABOUT / SEO CONTENT ================= */
.about-content{ background: var(--panel); border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.about-content h3{ font-size:1.1rem; margin-top:1.4em; }
.about-content p{ font-size:.95rem; }

/* ================= FAQ ================= */
.faq-item{ border-bottom: 1px solid var(--border); }
.faq-question{
  width:100%; text-align:left; background:none; border:none; color: var(--text); font-size:1rem; font-weight:600;
  padding: 18px 4px; display:flex; justify-content:space-between; align-items:center; cursor:pointer;
}
.faq-icon{ font-size:1.3rem; color: var(--cyan); transition: transform .2s; }
.faq-question[aria-expanded="true"] .faq-icon{ transform: rotate(45deg); }
.faq-answer{ max-height:0; overflow:hidden; transition: max-height .25s ease; }
.faq-answer p{ padding: 0 4px 18px; font-size:.92rem; margin:0; }

/* ================= CTA ================= */
.cta{ text-align:center; }
.cta-inner p{ max-width:480px; margin: 0 auto 24px; }
.cta-buttons{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

/* ================= FOOTER ================= */
.site-footer{ background: var(--panel); border-top: 1px solid var(--border); }
.footer-inner{
  max-width: var(--max-w); margin:0 auto; padding: 56px 24px 32px;
  display:grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: 28px;
}
.footer-col h4{ font-size:.85rem; text-transform:uppercase; letter-spacing:.04em; color: var(--muted); margin-bottom:14px; }
.footer-col a{ display:block; font-size:.87rem; color: var(--muted); padding: 5px 0; }
.footer-col a:hover{ color: var(--cyan); }
.footer-brand p{ font-size:.87rem; margin-top:12px; }
@media (max-width: 900px){ .footer-inner{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px){ .footer-inner{ grid-template-columns: 1fr; } }

.footer-bottom{
  border-top: 1px solid var(--border); padding: 20px 24px 40px; max-width: var(--max-w); margin: 0 auto;
  font-size:.8rem; color: var(--muted);
}
.disclaimer{ margin-top:8px; font-size:.75rem; line-height:1.5; }

/* ================= COOKIE BANNER ================= */
.cookie-banner{
  position:fixed; left:20px; right:20px; bottom:20px; z-index: 300;
  background: var(--panel); border:1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px 22px; display:none; align-items:center; justify-content:space-between;
  gap: 16px; flex-wrap:wrap; max-width: 720px; margin: 0 auto;
}
.cookie-banner.show{ display:flex; }
.cookie-banner p{ margin:0; font-size:.85rem; flex: 1 1 260px; }
.cookie-banner a{ color: var(--cyan); }
.cookie-actions{ display:flex; gap:10px; }

/* ================= TOAST ================= */
.toast{
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  padding: 12px 20px; border-radius: 999px; font-size:.85rem; z-index: 400;
  opacity:0; pointer-events:none; transition: opacity .2s ease, transform .2s ease;
}
.toast.show{ opacity:1; transform: translateX(-50%) translateY(0); }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: .001ms !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}