/* =========================
   RESET
========================= */
*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

img{
  max-width:100%;
  display:block;
}

a{
  text-decoration:none;
  color:inherit;
}

:root{
  --bg:#050816;
  --bg-soft:#0b1220;
  --surface:#081120;
  --surface-2:#0f172a;
  --card:#0b1220;
  --card-2:#111827;

  --text:#f8fafc;
  --text-dark:#f8fafc;
  --muted:#94a3b8;
  --muted-dark:#94a3b8;

  --line:rgba(255,255,255,.08);
  --line-dark:rgba(255,255,255,.08);

  --primary:#7c3aed;
  --primary-2:#2563eb;
  --primary-soft:rgba(59,130,246,.16);

  --success:#22c55e;
  --danger:#ef4444;
  --warning:#f59e0b;

  --radius:18px;
  --shadow-lg:0 20px 60px rgba(0,0,0,.35);
  --shadow-md:0 14px 40px rgba(15,23,42,.18);
}

body{
  font-family:'Inter', Arial, sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at top left, rgba(59,130,246,.16), transparent 28%),
    radial-gradient(circle at top right, rgba(37,99,235,.12), transparent 24%),
    linear-gradient(180deg, #050816 0%, #0b1220 100%);
  line-height:1.6;
  overflow-x:hidden;
  padding-top:90px;
  transition:background .25s ease,color .25s ease;
}

body.light-mode{
  --bg:#f3f4f6;
  --bg-soft:#e5e7eb;
  --surface:#ffffff;
  --surface-2:#f8fafc;
  --card:#ffffff;
  --card-2:#f8fafc;

  --text:#0f172a;
  --text-dark:#0f172a;
  --muted:#475569;
  --muted-dark:#475569;

  --line:rgba(15,23,42,.08);
  --line-dark:rgba(15,23,42,.08);

  --shadow-lg:0 20px 60px rgba(15,23,42,.08);
  --shadow-md:0 14px 40px rgba(15,23,42,.08);

  background:#f3f4f6;
  color:#0f172a;
}

body.dark-mode{
  background:
    radial-gradient(circle at top left, rgba(124,58,237,.18), transparent 28%),
    radial-gradient(circle at top right, rgba(37,99,235,.16), transparent 24%),
    linear-gradient(180deg, #050816 0%, #0b1220 100%);
  color:#f8fafc;
}

.container{
  width:min(1120px, calc(100% - 32px));
  margin:0 auto;
}

/* =========================
   TYPOGRAPHY / COMMON
========================= */
h1,h2,h3,h4,h5,h6{
  color:var(--text-dark);
  line-height:1.2;
}

p,li,small,label,span{
  color:inherit;
}

.text-center{ text-align:center; }
.mt-20{ margin-top:20px; }
.mb-20{ margin-bottom:20px; }

.badge,
.ultra-badge,
.hero-badge,
.page-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  border-radius:999px;
  background:var(--primary-soft);
  border:1px solid rgba(59,130,246,.22);
  color:#bfdbfe;
  font-size:13px;
  font-weight:700;
  box-shadow:0 0 18px rgba(59,130,246,.16);
}

body.light-mode .badge,
body.light-mode .ultra-badge,
body.light-mode .hero-badge,
body.light-mode .page-badge{
  background:rgba(15,23,42,.03);
  color:#334155;
  border-color:var(--line-dark);
}

/* =========================
   HEADER
========================= */
.header{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  z-index:9999;
  background:rgba(7,17,31,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  transition:background .25s ease, box-shadow .25s ease;
}

body.light-mode .header{
  background:rgba(255,255,255,.92);
}

.header.scrolled{
  background:rgba(7,17,31,.96);
  box-shadow:0 12px 30px rgba(0,0,0,.28);
}

body.light-mode .header.scrolled{
  background:rgba(255,255,255,.98);
  box-shadow:0 12px 30px rgba(15,23,42,.08);
}

.header-container{
  min-height:74px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  position:relative;
}

.logo a{
  font-size:24px;
  font-weight:900;
  letter-spacing:.3px;
  background:linear-gradient(90deg,#60a5fa,#8b5cf6);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  white-space:nowrap;
}

.nav{
  display:flex;
  align-items:center;
  gap:10px;
}

.nav > a,
.dropbtn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 14px;
  border-radius:12px;
  background:transparent;
  border:none;
  color:var(--text);
  font-size:14px;
  font-weight:700;
  cursor:pointer;
  transition:.2s ease;
  white-space:nowrap;
}

.nav > a:hover,
.nav > a.active,
.dropbtn:hover,
.dropdown.active .dropbtn{
  background:rgba(255,255,255,.08);
  color:#93c5fd;
}

body.light-mode .nav > a:hover,
body.light-mode .nav > a.active,
body.light-mode .dropbtn:hover,
body.light-mode .dropdown.active .dropbtn{
  background:rgba(15,23,42,.06);
  color:#2563eb;
}

.dropdown{
  position:relative;
}

.caret{
  font-size:12px;
  transition:transform .2s ease;
}

.dropdown.active .caret{
  transform:rotate(180deg);
}

.menu-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.06);
  color:var(--text);
  border-radius:12px;
  font-size:22px;
  cursor:pointer;
}

/* =========================
   MEGA MENU
========================= */
.mega-menu{
  display:none;
  position:absolute;
  top:calc(100% + 10px);
  left:0;
  min-width:760px;
  padding:18px;
  background:rgba(15,23,42,.98);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:0 22px 50px rgba(0,0,0,.35);
  z-index:10000;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:18px;
}

body.light-mode .mega-menu{
  background:#ffffff;
  box-shadow:0 22px 50px rgba(15,23,42,.10);
}

.dropdown:hover .mega-menu{
  display:grid;
}

.dropdown.active .mega-menu{
  display:grid;
}

.mega-col{
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.05);
  border-radius:14px;
  padding:14px;
}

body.light-mode .mega-col{
  background:#f8fafc;
  border-color:rgba(15,23,42,.06);
}

.mega-col h4{
  font-size:14px;
  color:#93c5fd;
  margin-bottom:10px;
  font-weight:800;
}

.mega-col a{
  display:block;
  padding:10px 12px;
  border-radius:10px;
  color:var(--text);
  font-size:14px;
  transition:.2s ease;
}

.mega-col a:hover{
  background:rgba(255,255,255,.06);
  color:#93c5fd;
}

body.light-mode .mega-col a:hover{
  background:rgba(15,23,42,.05);
  color:#2563eb;
}

/* =========================
   HERO / SECTION BASE
========================= */
.hero{
  padding:34px 0 24px;
}

.hero-box{
  display:grid;
  grid-template-columns:1.3fr .7fr;
  gap:20px;
  align-items:stretch;
}

.hero-main,
.hero-side,
.tool-card,
.feature-box,
.faq-item,
.related-card,
.content-box,
.thumb-card,
.keyword-card,
.stat-card,
.sample-card,
.top-keyword-item,
.results-panel,
.tool-panel,
.panel,
.empty-state,
.loading-state{
  background:var(--card);
  border:1px solid var(--line-dark);
  box-shadow:var(--shadow-md);
}

.hero-main,
.hero-side{
  border-radius:24px;
  backdrop-filter:blur(10px);
}

.hero-main{ padding:32px; }
.hero-side{
  padding:26px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}

.hero h1{
  font-size:clamp(32px, 6vw, 58px);
  line-height:1.05;
  font-weight:900;
  letter-spacing:-.03em;
  max-width:760px;
  margin-bottom:14px;
  color:var(--text-dark);
}

.hero p{
  color:var(--muted-dark);
  margin-bottom:20px;
  font-size:16px;
  max-width:760px;
}

.hero-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-top:8px;
}

.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:24px;
}

.stat-pill{
  padding:10px 14px;
  border-radius:14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:#dbeafe;
  font-size:14px;
  font-weight:700;
}

body.light-mode .stat-pill{
  color:#334155;
  background:rgba(15,23,42,.03);
}

.section{
  padding:30px 0 60px;
  position:relative;
  z-index:1;
}

.section h2{
  font-size:32px;
  line-height:1.15;
  margin-bottom:8px;
  color:var(--text-dark);
}

.section-lead{
  color:var(--muted-dark);
  margin-bottom:22px;
  max-width:760px;
  font-size:16px;
}

/* =========================
   CARDS
========================= */
.cards{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(240px,1fr));
  gap:18px;
  position:relative;
  z-index:2;
}

.card,
.tool-card{
  border-radius:var(--radius);
  padding:22px;
  backdrop-filter:blur(10px);
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
  position:relative;
  overflow:hidden;
}

.card:hover,
.tool-card:hover{
  transform:translateY(-6px);
  border-color:rgba(96,165,250,.34);
  box-shadow:0 22px 50px rgba(0,0,0,.34);
}

.card-icon{
  width:54px;
  height:54px;
  display:grid;
  place-items:center;
  margin-bottom:14px;
  border-radius:16px;
  background:rgba(59,130,246,.14);
  border:1px solid rgba(59,130,246,.18);
  font-size:24px;
  transition:transform .35s ease;
}

.tool-card:hover .card-icon,
.card:hover .card-icon{
  transform:scale(1.08) rotate(6deg);
}

.card h3,
.tool-card h3{
  font-size:18px;
  line-height:1.2;
  margin-bottom:8px;
  color:var(--text-dark);
}

.card p,
.tool-card p{
  color:var(--muted-dark);
  margin-bottom:16px;
  line-height:1.6;
  font-size:14px;
}

/* =========================
   BUTTONS
========================= */
.btn,
.sa-btn,
.mini-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:none;
  cursor:pointer;
  transition:.22s ease;
  font-weight:800;
}

.btn{
  padding:11px 16px;
  border-radius:12px;
  font-size:14px;
}

.sa-btn{
  height:54px;
  border-radius:16px;
  padding:0 18px;
}

.mini-btn{
  min-width:120px;
  padding:10px 12px;
  border-radius:12px;
  font-size:13px;
}

.btn:hover,
.sa-btn:hover,
.mini-btn:hover{
  transform:translateY(-1px);
}

.btn-primary,
.sa-btn-primary{
  background:linear-gradient(135deg, var(--primary), var(--primary-2));
  color:#fff;
  box-shadow:0 12px 24px rgba(37,99,235,.28);
}

.btn-secondary,
.sa-btn-secondary,
.btn-open{
  background:#172338;
  color:#fff;
}

body.light-mode .btn-secondary,
body.light-mode .sa-btn-secondary,
body.light-mode .btn-open{
  background:#e2e8f0;
  color:#0f172a;
}

.btn-copy{
  background:#e5e7eb;
  color:#0f172a;
}

.btn-soft{
  background:#f59e0b;
  color:#111827;
}

.sa-btn:disabled,
.mini-btn:disabled{
  opacity:.65;
  cursor:not-allowed;
  transform:none;
}

/* =========================
   FORMS
========================= */
input,
select,
textarea,
.form-input,
.form-select,
.form-textarea{
  width:100%;
  padding:12px 14px;
  border-radius:12px;
  border:1px solid var(--line-dark);
  background:var(--surface-2);
  color:var(--text-dark);
  outline:none;
}

.form-input,
.form-select{
  height:56px;
}

.form-textarea{
  min-height:110px;
  resize:vertical;
}

input::placeholder,
textarea::placeholder{
  color:var(--muted-dark);
}

input:focus,
select:focus,
textarea:focus,
.form-input:focus,
.form-select:focus,
.form-textarea:focus{
  border-color:rgba(96,165,250,.4);
  box-shadow:0 0 0 3px rgba(59,130,246,.12);
}

.form-group{
  margin-bottom:14px;
}

.form-label{
  font-size:13px;
  font-weight:800;
  color:var(--text-dark);
  margin-bottom:8px;
}

.select-wrap{
  position:relative;
}

.select-wrap::after{
  content:"⌄";
  position:absolute;
  top:50%;
  right:16px;
  transform:translateY(-50%);
  color:#64748b;
  pointer-events:none;
  font-size:14px;
}

.form-select{
  appearance:none;
  -webkit-appearance:none;
  -moz-appearance:none;
  padding-right:44px;
}

/* =========================
   STATES
========================= */
.message-box,
.no-results-box,
.empty-state,
.loading-state{
  padding:24px 20px;
  border-radius:18px;
  text-align:center;
  color:var(--muted-dark);
}

.empty-state,
.loading-state{
  border:1px dashed var(--line-dark);
}

.error-box{
  border-color:rgba(239,68,68,.28);
  background:rgba(127,29,29,.18);
}

.status{
  margin-top:14px;
  min-height:22px;
  font-size:14px;
  color:var(--muted-dark);
}

.status.success{ color:var(--success); }
.status.error{ color:var(--danger); }
.status.info{ color:#3b82f6; }

.loading-dots{
  display:inline-flex;
  gap:6px;
  margin-top:10px;
}

.loading-dots span{
  width:8px;
  height:8px;
  border-radius:50%;
  background:#8b5cf6;
  opacity:.4;
  animation:blink 1s infinite ease-in-out;
}

.loading-dots span:nth-child(2){ animation-delay:.15s; }
.loading-dots span:nth-child(3){ animation-delay:.3s; }

@keyframes blink{
  0%,100%{ opacity:.3; transform:translateY(0); }
  50%{ opacity:1; transform:translateY(-2px); }
}

.skeleton-card{
  height:250px;
  border-radius:16px;
  background:linear-gradient(
    90deg,
    rgba(255,255,255,.05),
    rgba(255,255,255,.1),
    rgba(255,255,255,.05)
  );
  background-size:200% 100%;
  animation:shimmer 1.2s infinite linear;
}

@keyframes shimmer{
  0%{ background-position:200% 0; }
  100%{ background-position:-200% 0; }
}

/* =========================
   TRENDING / VIDEO CARDS
========================= */
.trending-ultra{
  padding:28px 0 60px;
}

.trend-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:22px;
  flex-wrap:wrap;
  margin-bottom:20px;
}

.trend-head h1{
  font-size:clamp(32px, 5vw, 52px);
  line-height:1.05;
  margin:10px 0 12px;
  color:var(--text-dark);
}

.trend-head p{
  max-width:760px;
  color:var(--muted-dark);
}

.trend-controls-ultra,
.trend-controls{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
}

.trend-select-wrap,
.trending-filter,
.mini-stat{
  background:var(--card);
  border:1px solid var(--line-dark);
  border-radius:18px;
  padding:14px;
  backdrop-filter:blur(10px);
}

.trend-mini-stats{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:14px;
  margin-bottom:18px;
}

.mini-stat span{
  display:block;
  color:var(--muted-dark);
  font-size:13px;
  margin-bottom:6px;
}

.mini-stat strong{
  color:var(--text-dark);
  font-size:22px;
}

.trend-toolbar-ultra{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  margin-bottom:24px;
}

.ultra-search{
  flex:1;
  min-width:260px;
}

.category-tabs{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
}

.category-tabs button{
  padding:8px 14px;
  border-radius:999px;
  border:none;
  background:rgba(255,255,255,.05);
  color:var(--text);
  cursor:pointer;
  transition:.2s ease;
}

.category-tabs button:hover{
  background:rgba(255,255,255,.10);
}

.category-tabs button.active{
  background:linear-gradient(135deg, #3b82f6, #2563eb);
  color:#fff;
  box-shadow:0 6px 18px rgba(37,99,235,.3);
}

.ultra-video-grid,
#videoGrid{
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(250px,1fr));
  gap:18px;
}

.ultra-video-card{
  background:var(--card-2);
  border:1px solid var(--line-dark);
  border-radius:18px;
  overflow:hidden;
  transition:transform .22s ease, border-color .22s ease;
}

.ultra-video-card:hover{
  transform:translateY(-4px);
  border-color:rgba(96,165,250,.34);
}

.ultra-thumb{
  position:relative;
  display:block;
  border-radius:20px 20px 0 0;
  overflow:hidden;
  background:rgba(15,23,42,.9);
}

.ultra-thumb img,
.ultra-video-card img{
  width:100%;
  height:190px;
  object-fit:cover;
  display:block;
  transition:transform .4s ease;
}

.ultra-video-card:hover .ultra-thumb img{
  transform:scale(1.05);
}

.ultra-play{
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  font-size:42px;
  color:#fff;
  background:rgba(0,0,0,.18);
  opacity:0;
  transition:.28s ease;
}

.ultra-video-card:hover .ultra-play{
  opacity:1;
}

.ultra-rank{
  position:absolute;
  top:12px;
  left:12px;
  padding:6px 10px;
  border-radius:999px;
  background:rgba(15,23,42,.88);
  border:1px solid rgba(255,255,255,.12);
  color:#fff;
  font-size:12px;
  font-weight:800;
}

.ultra-duration{
  position:absolute;
  right:12px;
  bottom:12px;
  padding:5px 8px;
  border-radius:10px;
  background:rgba(0,0,0,.78);
  color:#fff;
  font-size:12px;
  font-weight:700;
}

.ultra-info{
  padding:12px;
}

.ultra-info h3{
  font-size:16px;
  line-height:1.35;
  margin-bottom:7px;
  color:var(--text-dark);
}

.ultra-info h3 a:hover{
  color:#93c5fd;
}

.ultra-meta,
.ultra-bottom{
  color:var(--muted-dark);
  font-size:13px;
}

.ultra-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:12px;
}

.ultra-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}

.ultra-watch-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:9px 14px;
  border-radius:12px;
  background:linear-gradient(135deg, #3b82f6, #2563eb);
  color:#fff;
  font-weight:700;
  box-shadow:0 10px 24px rgba(37,99,235,.22);
}

.fav-btn{
  margin-top:8px;
  padding:6px 10px;
  border-radius:10px;
  border:none;
  background:var(--danger);
  color:#fff;
  cursor:pointer;
  font-size:13px;
}

/* =========================
   THUMBNAIL
========================= */
.thumb-link-open,
.thumb-link-download{
  flex:1;
  text-align:center;
  padding:9px 10px;
  border-radius:10px;
  color:#fff;
  font-size:13px;
  font-weight:700;
  border:none;
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}

.thumb-link-open{
  background:#172036;
}

.thumb-link-download{
  background:#6d5cff;
}

@media (max-width:640px){
  #thumbResult{
    grid-template-columns:1fr !important;
  }
}

/* =========================
   FOOTER
========================= */
.site-footer,
.footer,
footer{
  border-top:1px solid var(--line);
  background:rgba(3,7,18,.7);
}

.footer-inner{
  padding:22px 0;
  color:var(--muted);
  font-size:14px;
}

.site-footer a,
.footer a,
footer a{
  color:#cbd5e1;
}

.site-footer a:hover,
.footer a:hover,
footer a:hover{
  color:#60a5fa;
}

/* =========================
   DEBUG / SMALL HELPERS
========================= */
.debug-box{
  margin-top:12px;
  padding:12px;
  border-radius:12px;
  background:#111827;
  border:1px solid rgba(255,255,255,.08);
  color:#f8fafc;
  font-size:12px;
  line-height:1.6;
  white-space:pre-wrap;
  word-break:break-word;
}

.open{
  background:#0f172a;
  color:#fff;
}

body.light-mode .open{
  background:#e2e8f0;
  color:#0f172a;
}

.small-btn.download:disabled{
  cursor:not-allowed;
  filter:grayscale(.3);
}

/* =========================
   RESPONSIVE
========================= */
@media (max-width:980px){
  .hero-box{
    grid-template-columns:1fr;
  }
}

@media (max-width:768px){
  body{
    padding-top:84px;
  }

  .header-container{
    min-height:68px;
    flex-wrap:wrap;
    padding:10px 0;
  }

  .menu-toggle{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    margin-left:auto;
  }

  .nav{
    display:none;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    margin-top:10px;
    padding:12px;
    background:rgba(15,23,42,.98);
    border:1px solid var(--line);
    border-radius:14px;
    position:absolute;
    top:calc(100% + 10px);
    left:0;
    right:0;
    box-shadow:0 20px 50px rgba(0,0,0,.35);
  }

  body.light-mode .nav{
    background:#ffffff;
  }

  .nav.active{
    display:flex;
  }

  .nav > a,
  .dropbtn{
    width:100%;
    justify-content:space-between;
    text-align:left;
    padding:14px;
    background:rgba(255,255,255,.03);
  }

  body.light-mode .nav > a,
  body.light-mode .dropbtn{
    background:rgba(15,23,42,.03);
  }

  .dropdown{
    width:100%;
  }

  .mega-menu{
    position:static;
    min-width:100%;
    display:none;
    grid-template-columns:1fr;
    padding:10px;
    margin-top:8px;
    box-shadow:none;
    background:rgba(255,255,255,.03);
  }

  body.light-mode .mega-menu{
    background:rgba(15,23,42,.03);
  }

  .dropdown:hover .mega-menu{
    display:none;
  }

  .dropdown.active .mega-menu{
    display:grid;
  }

  .trend-mini-stats{
    grid-template-columns:1fr;
  }

  .trend-controls-ultra,
  .trend-controls,
  .ultra-search{
    width:100%;
    min-width:100%;
  }

  .trend-toolbar-ultra{
    align-items:stretch;
  }

  .ultra-thumb img{
    height:210px;
  }

  .ultra-bottom{
    flex-direction:column;
    align-items:flex-start;
  }
}

@media (max-width:600px){
  .container{
    width:min(100% - 24px, 1120px);
  }

  .hero{
    padding-top:24px;
  }

  .hero h1{
    font-size:30px;
  }

  .section,
  .trending-ultra{
    padding:24px 0 44px;
  }

  .card,
  .tool-card{
    padding:18px;
  }
}