/* ==========================================================================
   Instagram Video Download — premium design system
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root{
  /* Instagram-inspired gradient (used sparingly, per spec) */
  --ig1:#833AB4; --ig2:#C13584; --ig3:#E1306C; --ig4:#FD1D1D; --ig5:#F77737;
  --gradient-ig: linear-gradient(115deg, var(--ig1) 0%, var(--ig2) 30%, var(--ig3) 55%, var(--ig4) 75%, var(--ig5) 100%);

  /* Neutrals */
  --bg:#FFFFFF;
  --bg-soft:#FAFAFC;
  --bg-soft-2:#F8FAFC;
  --dark:#0F172A;
  --text:#111827;
  --muted:#64748B;
  --border:#E5E7EB;

  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow-sm: 0 2px 8px rgba(15,23,42,.06);
  --shadow: 0 12px 32px rgba(15,23,42,.08);
  --shadow-lg: 0 20px 48px rgba(15,23,42,.12);
  --shadow-brand: 0 10px 26px rgba(225,48,108,.28);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color:var(--text);
  background:var(--bg-soft);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--ig3)}
a:hover{color:var(--ig4)}
::selection{background:rgba(225,48,108,.18)}

img{max-width:100%}

.container{max-width:1160px}

/* Focus states for accessibility */
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:3px solid rgba(131,58,180,.45);
  outline-offset:2px;
}

/* ---------- Layout helpers ---------- */
.section{padding:88px 0}
.section-light{background:var(--bg-soft-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;
  color:var(--ig3);background:rgba(225,48,108,.08);
  border-radius:999px;padding:6px 14px;margin-bottom:14px;
}
.section-title{font-weight:800;letter-spacing:-.02em;color:var(--dark)}
.section-subtitle{color:var(--muted);max-width:640px;margin-left:auto;margin-right:auto}

/* ---------- Navbar ---------- */
.nav-glass{
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease, background .25s ease;
}
.nav-glass.is-scrolled{box-shadow:var(--shadow-sm)}
.navbar{padding-top:14px;padding-bottom:14px}
.navbar-dark .navbar-brand,.navbar-dark .nav-link{color:var(--text) !important}
.navbar-brand{font-weight:800;letter-spacing:-.01em;font-size:1.08rem}
.navbar-dark .nav-link{font-weight:500;color:var(--muted) !important;padding:8px 14px !important}
.navbar-dark .nav-link:hover{color:var(--text) !important}
.brand-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:11px;
  background:var(--gradient-ig);color:#fff;font-size:16px;
  box-shadow:0 6px 16px rgba(193,53,132,.35);
}
.navbar-toggler{border:1px solid var(--border);border-radius:8px}

/* ---------- Hero ---------- */
.hero{
  padding-top:148px;padding-bottom:72px;
  background:
    radial-gradient(60% 50% at 15% 0%, rgba(131,58,180,.10), transparent 60%),
    radial-gradient(50% 45% at 100% 10%, rgba(253,29,29,.08), transparent 60%),
    var(--bg);
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:7px 16px;font-size:.85rem;font-weight:600;color:var(--muted);
  box-shadow:var(--shadow-sm);margin-bottom:22px;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--gradient-ig)}
.hero h1{
  font-weight:800;letter-spacing:-.03em;color:var(--dark);
  font-size:clamp(2.1rem, 4.2vw, 3.2rem);
}
.hero-subtitle{color:var(--muted);font-size:1.12rem;max-width:620px;margin:16px auto 0}

.download-card{
  background:#fff;border-radius:var(--radius-lg);
  padding:22px;border:1px solid var(--border);
  box-shadow:var(--shadow-lg);max-width:760px;margin:36px auto 0;
}
.download-form{margin:0}
.form-group{display:flex;align-items:stretch;gap:10px;width:100%}
.input-wrapper{
  flex:1;display:flex;align-items:center;
  background:var(--bg-soft-2);border:1.5px solid var(--border);
  border-radius:var(--radius-sm);padding:0 16px;transition:border-color .2s ease, background .2s ease;
}
.input-wrapper:focus-within{border-color:var(--ig3);background:#fff}
.input-wrapper i{color:var(--muted);font-size:16px;margin-right:10px}
.form-input{
  flex:1;border:none;outline:none;background:transparent;
  padding:16px 4px;font-size:16px;color:var(--text);border-radius:var(--radius-sm);
}
.form-input::placeholder{color:#9AA4B2}

.form-btn{
  display:flex;align-items:center;justify-content:center;gap:8px;white-space:nowrap;
  background:var(--gradient-ig);border:none;border-radius:var(--radius-sm);
  padding:0 28px;font-size:15px;font-weight:700;color:#fff;cursor:pointer;
  box-shadow:var(--shadow-brand);transition:transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}
.form-btn:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(225,48,108,.38)}
.form-btn:active{transform:translateY(0)}
.form-btn:disabled{opacity:.65;cursor:progress;transform:none}

.helper-text{color:var(--muted);font-size:.86rem;margin-top:14px;text-align:center}

.trust-row{
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px 24px;
  margin-top:26px;
}
.trust-item{
  display:flex;align-items:center;gap:8px;color:var(--muted);font-size:.88rem;font-weight:500;
}
.trust-item i{color:var(--ig3)}

/* Loading / result box */
#downloadbox{margin-top:18px}
.dl-loading{
  display:flex;align-items:center;justify-content:center;gap:12px;
  padding:22px;color:var(--muted);font-weight:600;
}
.dl-spinner{
  width:22px;height:22px;border-radius:50%;
  border:3px solid rgba(225,48,108,.18);border-top-color:var(--ig3);
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

.alert{border-radius:var(--radius-sm);border:1px solid var(--border);padding:14px 18px;font-size:.95rem}
.alert-danger{background:#FEF2F2;border-color:#FCA5A5;color:#991B1B}

/* Result card */
.result-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);padding:20px;margin-top:6px;
}
.result-media{
  border-radius:var(--radius);overflow:hidden;background:#0000;
  display:flex;justify-content:center;
}
.result-media img,.result-media video{
  width:100%;max-width:420px;border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
}
.result-meta{margin-top:16px;text-align:left}
.result-meta dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:8px 18px}
.result-meta dt{color:var(--muted);font-weight:600;font-size:.85rem}
.result-meta dd{margin:0;color:var(--text);font-weight:500;font-size:.92rem;word-break:break-word}
.result-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:18px}
.btn-red{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--gradient-ig);color:#fff !important;font-weight:700;font-size:15px;
  padding:13px 26px;border-radius:var(--radius-sm);border:none;text-decoration:none;
  cursor:pointer;box-shadow:var(--shadow-brand);transition:transform .18s ease, box-shadow .18s ease;
}
.btn-red:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(225,48,108,.38);color:#fff !important}
.btn-outline-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--text) !important;font-weight:600;font-size:15px;
  padding:12px 22px;border-radius:var(--radius-sm);border:1.5px solid var(--border);
  text-decoration:none;cursor:pointer;transition:border-color .18s ease, background .18s ease;
}
.btn-outline-soft:hover{border-color:var(--ig3);background:var(--bg-soft-2);color:var(--text) !important}

/* ---------- Feature cards ---------- */
.feature-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 20px;height:100%;transition:transform .2s ease, box-shadow .2s ease;
}
.feature-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feature-icon{
  width:52px;height:52px;border-radius:14px;color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:20px;
  background:var(--gradient-ig);box-shadow:var(--shadow-brand);margin-bottom:14px;
}
.feature-item h6{font-weight:700;color:var(--dark);margin-bottom:6px}

/* ---------- How it works ---------- */
.step-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 24px;height:100%;position:relative;
}
.step-index{
  font-weight:800;font-size:.8rem;color:var(--ig3);letter-spacing:.05em;margin-bottom:10px;display:block;
}
.step-icon{
  width:56px;height:56px;border-radius:16px;color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:22px;
  background:var(--gradient-ig);box-shadow:var(--shadow-brand);margin-bottom:16px;
}
.step-card h5{font-weight:700;color:var(--dark)}

/* ---------- SEO content ---------- */
.prose-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:40px;box-shadow:var(--shadow-sm);
}
.prose-card h2{font-weight:800;color:var(--dark);letter-spacing:-.01em}
.prose-card h3{font-weight:700;color:var(--dark);margin-top:28px}
.prose-card p, .prose-card li{color:var(--muted)}
.prose-card table{border-radius:12px;overflow:hidden}
.prose-card .table thead th{background:var(--bg-soft-2);border-bottom:none;color:var(--dark);font-weight:700}

/* ---------- FAQ ---------- */
.faq-card{
  border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;margin-bottom:12px;background:#fff;
}
.faq-card .card-header{background:#fff;border-bottom:none;padding:0}
.faq-card .btn-link{
  color:var(--dark);text-decoration:none;font-weight:600;
  width:100%;text-align:left;padding:18px 20px;display:flex;justify-content:space-between;align-items:center;
}
.faq-card .btn-link:hover,.faq-card .btn-link:focus{text-decoration:none}
.faq-card .btn-link:after{
  content:"\f107";font-family:FontAwesome;color:var(--muted);transition:transform .2s ease;
}
.faq-card .btn-link:not(.collapsed):after{transform:rotate(180deg)}
.faq-card .card-body{color:var(--muted);padding:0 20px 18px}

/* ---------- Disclaimer strip ---------- */
.disclaimer-strip{
  background:var(--bg-soft-2);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px 22px;color:var(--muted);font-size:.9rem;display:flex;gap:12px;align-items:flex-start;
}
.disclaimer-strip i{color:var(--ig3);margin-top:2px}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:#CBD5E1;padding-top:56px}
.site-footer .brand-icon{box-shadow:0 6px 16px rgba(0,0,0,.35)}
.site-footer strong{color:#fff}
.footer-desc{color:#94A3B8;font-size:.92rem;max-width:340px}
.footer-title{color:#E2E8F0;font-weight:700;margin-bottom:12px;font-size:.92rem;letter-spacing:.02em;text-transform:uppercase}
.footer-links{margin:0}
.footer-links a{color:#94A3B8;font-size:.92rem;line-height:2.1}
.footer-links a:hover{color:#fff}
.footer-meta{border-top:1px solid rgba(255,255,255,.08);color:#64748B;font-size:.85rem;padding:18px 0;margin-top:20px}
.footer-copy{color:#64748B;font-size:.85rem;margin-top:16px}

/* ---------- Responsive ---------- */
@media (max-width: 767.98px){
  .section{padding:56px 0}
  .hero{padding-top:118px;padding-bottom:48px}
  .form-group{flex-direction:column}
  .form-btn{width:100%;padding:15px 22px}
  .input-wrapper{width:100%}
  .prose-card{padding:24px}
  .result-meta dl{grid-template-columns:1fr}
  .result-meta dt{margin-top:6px}
}
@media (max-width: 991.98px){
  .nav-glass .navbar-collapse{background:#fff;border-radius:12px;margin-top:10px;padding:10px;box-shadow:var(--shadow-sm);border:1px solid var(--border)}
}

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