/* ==========================================================================
   Instagram Video Downloader — SEOWebChecker.com
   ========================================================================== */

:root {
  --font-body: 'Inter', system-ui, sans-serif;
  --font-display: 'Outfit', system-ui, sans-serif;

  --bg: #f7f7fb;
  --bg-alt: #ffffff;
  --text: #1a1a2e;
  --text-muted: #5a5a72;
  --border: #e6e6ef;
  --card-bg: #ffffff;
  --shadow: 0 4px 24px rgba(20, 20, 40, 0.06);
  --shadow-lg: 0 12px 40px rgba(20, 20, 40, 0.12);

  --primary: #7b2ff7;
  --primary-dark: #5c1fc7;
  --gradient: linear-gradient(135deg, #833ab4 0%, #fd1d1d 50%, #fcb045 100%);
  --gradient-soft: linear-gradient(135deg, rgba(131,58,180,0.10) 0%, rgba(253,29,29,0.10) 50%, rgba(252,176,69,0.10) 100%);

  --success: #16a34a;
  --error: #dc2626;
  --radius: 14px;
  --radius-sm: 8px;
  --header-h: 72px;
}

[data-theme="dark"] {
  --bg: #0f0f17;
  --bg-alt: #171722;
  --text: #f1f1f6;
  --text-muted: #a3a3b8;
  --border: #2a2a3a;
  --card-bg: #1c1c29;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 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);
  overflow-x: hidden;
  max-width: 100vw;
  transition: background 0.25s ease, color 0.25s ease;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--text);
  margin: 0 0 0.5em;
}

a { color: inherit; text-decoration: none; }
p { color: var(--text-muted); line-height: 1.7; margin: 0 0 1em; }
button { font-family: var(--font-body); cursor: pointer; }
img { max-width: 100%; display: block; }

.icon-sun, .icon-moon { fill: none; stroke: var(--text); stroke-width: 1.8; stroke-linecap: round; }

/* ============ HEADER ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  width: 100%;
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.logo-mark {
  background: var(--gradient);
  color: #fff;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.main-nav { flex: 1; }
.nav-list {
  list-style: none;
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
  align-items: center;
}

.nav-list > li > a,
.nav-toggle {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.94rem;
  color: var(--text);
  background: none;
  border: none;
  white-space: nowrap;
}

.nav-list > li > a:hover,
.nav-toggle:hover { background: var(--gradient-soft); }

.has-mega { position: relative; }
.chevron { display: inline-block; transition: transform 0.2s ease; font-size: 0.75em; }
.has-mega:hover .chevron { transform: rotate(180deg); }

.mega-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 20px;
  display: none;
  gap: 28px;
  min-width: 560px;
  z-index: 50;
}

.has-mega:hover .mega-menu,
.has-mega:focus-within .mega-menu { display: flex; }

.mega-col h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.mega-col a {
  display: block;
  padding: 6px 0;
  font-size: 0.92rem;
  color: var(--text);
}
.mega-col a:hover { color: var(--primary); }
.mega-col a.active-link { color: var(--primary); font-weight: 600; }

.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.theme-toggle {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.hamburger span {
  width: 20px;
  height: 2px;
  background: var(--text);
  margin: 0 auto;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  top: var(--header-h);
  right: -100%;
  width: min(320px, 85vw);
  height: calc(100vh - var(--header-h));
  background: var(--bg-alt);
  border-left: 1px solid var(--border);
  z-index: 210;
  transition: right 0.25s ease;
  overflow-y: auto;
}
.mobile-nav.open { right: 0; }
.mobile-nav ul { list-style: none; margin: 0; padding: 10px; }
.mobile-nav > ul > li > a,
.mobile-acc-btn {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 14px 12px;
  font-weight: 500;
  border: none;
  background: none;
  color: var(--text);
  font-size: 0.98rem;
  border-bottom: 1px solid var(--border);
}
.mobile-acc-panel {
  display: none;
  padding-left: 12px;
  flex-direction: column;
}
.mobile-acc-panel.open { display: flex; }
.mobile-acc-panel a {
  padding: 10px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.mobile-nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 205;
}
.mobile-nav-backdrop.open { display: block; }

@media (max-width: 900px) {
  .main-nav { display: none; }
  .hamburger { display: flex; }
}

/* ============ BREADCRUMB ============ */
.breadcrumb-wrap { background: var(--bg); border-bottom: 1px solid var(--border); }
.breadcrumb {
  max-width: 1280px;
  margin: 0 auto;
  padding: 12px 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb .current { color: var(--text); font-weight: 500; }

/* ============ HERO ============ */
.hero {
  background: var(--gradient-soft);
  padding: 60px 20px 50px;
  text-align: center;
}
.hero-inner { max-width: 780px; margin: 0 auto; }
.hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  line-height: 1.25;
}
.hero-sub { font-size: 1.05rem; max-width: 620px; margin: 0 auto 30px; }

.downloader-form { max-width: 640px; margin: 0 auto; }
.input-group {
  display: flex;
  gap: 10px;
  background: var(--card-bg);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 6px;
  box-shadow: var(--shadow);
}
.input-group:focus-within { border-color: var(--primary); }

#igUrl {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  padding: 14px 16px;
  font-size: 1rem;
  color: var(--text);
  font-family: var(--font-body);
  min-width: 0;
}
#igUrl::placeholder { color: var(--text-muted); }

.btn-primary {
  background: var(--gradient);
  color: #fff;
  border: none;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  transition: opacity 0.2s ease, transform 0.1s ease;
}
.btn-primary:hover { opacity: 0.92; }
.btn-primary:active { transform: scale(0.98); }
.btn-primary:disabled { opacity: 0.7; cursor: not-allowed; }

.btn-spinner {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.btn-primary.loading .btn-spinner { display: inline-block; }
.btn-primary.loading .btn-label { opacity: 0.85; }

@keyframes spin { to { transform: rotate(360deg); } }

.field-error {
  color: var(--error);
  font-size: 0.85rem;
  margin: 10px 0 0;
  min-height: 1.2em;
  text-align: left;
  padding-left: 4px;
}

.hero-hint { font-size: 0.82rem; margin-top: 14px; opacity: 0.75; }

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 20px;
  margin-top: 26px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ============ RESULT SECTION ============ */
.result-section { padding: 10px 20px 40px; scroll-margin-top: 90px; }
.result-inner { max-width: 780px; margin: 0 auto; }

.result-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 40px 0;
  color: var(--text-muted);
}
.loader {
  width: 38px; height: 38px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.result-error {
  background: rgba(220,38,38,0.08);
  border: 1px solid rgba(220,38,38,0.3);
  color: var(--error);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
}

.result-card {
  display: flex;
  gap: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  flex-wrap: wrap;
}

.result-thumb-wrap {
  position: relative;
  width: 200px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg);
  aspect-ratio: 9/16;
}
.result-thumb-wrap img { width: 100%; height: 100%; object-fit: cover; }
.play-badge {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.6rem;
  background: rgba(0,0,0,0.15);
}

.result-meta { flex: 1; min-width: 200px; }
.result-owner { font-size: 0.9rem; margin-bottom: 6px; }
.result-stats {
  display: flex;
  gap: 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.download-options { display: flex; flex-wrap: wrap; gap: 10px; }
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
}
.download-btn:hover { opacity: 0.9; }
.download-btn.secondary {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
}

.post-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 20px;
}
.share-buttons { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.share-label { font-size: 0.85rem; color: var(--text-muted); margin-right: 4px; }
.share-btn {
  width: 34px; height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
}
.share-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

.feedback-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
}
.feedback-btn:hover { border-color: var(--primary); color: var(--primary); }

/* ============ RELATED TOOLS ============ */
.related-tools { padding: 40px 20px; background: var(--bg-alt); }
.related-inner { max-width: 1100px; margin: 0 auto; }
.related-tools h2 { text-align: center; font-size: 1.5rem; margin-bottom: 24px; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}
.related-grid a {
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  color: var(--text-muted);
}
.related-grid a:hover { color: var(--primary); border-color: var(--primary); }

/* ============ FEATURES ============ */
.features { padding: 60px 20px; }
.features-inner { max-width: 1100px; margin: 0 auto; }
.features h2 { text-align: center; font-size: 1.8rem; margin-bottom: 40px; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}
.feature-icon { font-size: 1.8rem; margin-bottom: 12px; }
.feature-card h3 { font-size: 1.1rem; }
.feature-card p { font-size: 0.92rem; margin: 0; }

/* ============ HOW IT WORKS ============ */
.how-it-works { padding: 60px 20px; background: var(--bg-alt); }
.how-inner { max-width: 1100px; margin: 0 auto; }
.how-it-works h2 { text-align: center; font-size: 1.8rem; margin-bottom: 40px; }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.step-card {
  text-align: center;
  padding: 20px;
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  background: var(--gradient);
  color: #fff;
  border-radius: 50%;
  font-weight: 700;
  margin-bottom: 14px;
  font-family: var(--font-display);
}
.step-card h3 { font-size: 1.05rem; }
.step-card p { font-size: 0.9rem; }

/* ============ SEO ARTICLE ============ */
.seo-article { padding: 60px 20px; }
.article-inner { max-width: 780px; margin: 0 auto; }
.seo-article h2 { font-size: 1.5rem; margin-bottom: 20px; }
.seo-article p { font-size: 0.96rem; }

/* ============ FAQ ============ */
.faq { padding: 60px 20px; background: var(--bg-alt); }
.faq-inner { max-width: 780px; margin: 0 auto; }
.faq h2 { text-align: center; font-size: 1.8rem; margin-bottom: 30px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--card-bg);
}
.faq-question {
  width: 100%;
  text-align: left;
  padding: 16px 20px;
  background: none;
  border: none;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-icon { transition: transform 0.2s ease; font-size: 1.2rem; }
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
  padding: 0 20px;
}
.faq-answer p { padding-bottom: 16px; margin: 0; font-size: 0.92rem; }

/* ============ CTA ============ */
.cta {
  padding: 60px 20px;
  background: var(--gradient);
  text-align: center;
}
.cta-inner { max-width: 700px; margin: 0 auto; }
.cta h2 { color: #fff; font-size: 1.8rem; }
.cta p { color: rgba(255,255,255,0.9); margin-bottom: 26px; }
.cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-cta {
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
}
.btn-cta-primary { background: #fff; color: var(--primary-dark); }
.btn-cta-secondary { background: rgba(255,255,255,0.15); color: #fff; border: 1px solid rgba(255,255,255,0.4); }
.btn-cta:hover { opacity: 0.9; }

/* ============ FOOTER ============ */
.site-footer { background: var(--bg-alt); border-top: 1px solid var(--border); padding: 50px 20px 20px; }
.footer-top {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 30px;
}
.footer-col h4 { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); margin-bottom: 14px; }
.footer-col a { display: block; padding: 5px 0; font-size: 0.86rem; color: var(--text-muted); }
.footer-col a:hover { color: var(--primary); }
.footer-brand p { font-size: 0.85rem; margin-top: 12px; }

.footer-disclaimer {
  max-width: 1280px;
  margin: 30px auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}
.footer-disclaimer p { font-size: 0.78rem; opacity: 0.75; margin: 0; }

.footer-bottom {
  max-width: 1280px;
  margin: 20px auto 0;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
}

@media (max-width: 900px) {
  .footer-top { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .footer-top { grid-template-columns: 1fr; }
}

/* ============ COOKIE BANNER ============ */
.cookie-banner {
  position: fixed;
  bottom: 16px;
  left: 16px;
  right: 16px;
  max-width: 560px;
  margin: 0 auto;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 18px 20px;
  z-index: 300;
  display: none;
}
.cookie-banner.show { display: block; }
.cookie-banner p { font-size: 0.85rem; margin: 0 0 12px; }
.cookie-actions { display: flex; gap: 10px; }
.btn-cookie {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  border: none;
}
.btn-cookie-accept { background: var(--gradient); color: #fff; }
.btn-cookie-dismiss { background: var(--bg); color: var(--text); border: 1px solid var(--border); }

/* ============ RESPONSIVE FIXES ============ */
@media (max-width: 480px) {
  .input-group { flex-direction: column; }
  .btn-primary { justify-content: center; }
  .result-card { flex-direction: column; }
  .result-thumb-wrap { width: 100%; max-width: 240px; margin: 0 auto; }
  .post-actions { flex-direction: column; align-items: flex-start; }
}