/* SEO Test Pro — Frontend (design-matched) */

.stp {
  --stp-bg:#FAFAF7; --stp-surface:#FFFFFF;
  --stp-ink:#1A1A19; --stp-ink-2:#3C3C38;
  --stp-mute:#6B6B66; --stp-mute-2:#9A9A93;
  --stp-line:#ECEBE5; --stp-line-2:#E3E2DC;
  --stp-chip:#F3F2EC;
  --stp-accent:oklch(0.42 0.075 155);
  --stp-accent-ink:oklch(0.32 0.07 155);
  --stp-accent-soft:oklch(0.97 0.018 155);
  --stp-accent-ring:oklch(0.42 0.075 155 / 0.18);
  --stp-success-soft:oklch(0.96 0.03 155);
  --stp-danger:oklch(0.55 0.14 25);
  --stp-danger-soft:oklch(0.97 0.028 25);
  --stp-info-soft:oklch(0.96 0.02 250);
  --stp-info-ink:oklch(0.45 0.08 250);
  --stp-radius:10px; --stp-radius-sm:8px; --stp-radius-lg:14px;
  --stp-shadow-card:0 1px 0 rgba(26,26,25,.03),0 1px 2px rgba(26,26,25,.04);
  --stp-ctrl-h:34px;

  margin:0 auto;
  padding:32px 28px 60px;
  font:13.5px/1.5 "Inter",ui-sans-serif,system-ui,sans-serif;
  color:var(--stp-ink);
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"ss01","cv11";
}
.stp *{box-sizing:border-box;}
.stp h1,.stp h2,.stp h3{font-family:"Inter Tight","Inter",sans-serif;letter-spacing:-.01em;margin:0;}
.stp .stp-mono{font-family:"JetBrains Mono",ui-monospace,monospace;font-variant-numeric:tabular-nums;}

/* ===== PAGE HEAD ===== */
.stp-page-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:22px;gap:20px;flex-wrap:wrap;}
.stp-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--stp-mute);margin-bottom:10px;}
.stp-dot{width:6px;height:6px;border-radius:50%;background:var(--stp-accent);box-shadow:0 0 0 3px color-mix(in oklab,var(--stp-accent) 18%,transparent);}
.stp-h1{font-size:26px;font-weight:600;color:var(--stp-ink);}
.stp-head-desc{color:var(--stp-mute);margin:6px 0 0;font-size:13.5px;max-width:56ch;}
.stp-head-actions{display:flex;gap:8px;}

/* ===== BUTTONS ===== */
.stp-btn{
  height:var(--stp-ctrl-h);padding:0 12px;font:500 12.5px "Inter";color:var(--stp-ink);
  background:var(--stp-surface);border:1px solid var(--stp-line-2);border-radius:var(--stp-radius-sm);
  cursor:pointer;display:inline-flex;align-items:center;gap:6px;
  transition:border-color .12s,background .12s,transform .05s;white-space:nowrap;
}
.stp-btn:hover{border-color:var(--stp-ink);}
.stp-btn:active{transform:translateY(1px);}
.stp-btn-primary,.stp-btn-primary:visited,.stp-btn-primary:link{border-color:var(--stp-ink);font-weight:600;}
.stp-btn-primary:hover,.stp-btn-primary:focus{background:var(--stp-ink) !important;border-color:var(--stp-ink) !important;color:#FFFFFF !important;}
.stp-btn-primary svg{stroke:var(--stp-ink);}
.stp-btn-primary:hover svg{stroke:#FFFFFF;}
.stp-btn-sm{height:28px;padding:0 10px;font-size:12px;}
.stp-btn-ghost{border-color:transparent;background:transparent;color:var(--stp-mute);}
.stp-btn-ghost:hover{color:var(--stp-ink);background:var(--stp-chip);}
.stp-btn-danger-ghost{border-color:transparent;background:transparent;color:var(--stp-danger);font-size:12px;height:28px;padding:0 10px;}
.stp-btn-danger-ghost:hover{background:var(--stp-danger-soft);}
.stp-btn-badge{
  font-family:"JetBrains Mono";font-size:10.5px;
  background:var(--stp-chip);color:var(--stp-mute);
  border-radius:4px;padding:1px 5px;
}
.stp-btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}

/* ===== CARD ===== */
.stp-card{
  background:var(--stp-surface);border:1px solid var(--stp-line);
  border-radius:var(--stp-radius-lg);box-shadow:var(--stp-shadow-card);
  margin-bottom:20px;
}
.stp-card-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 18px;border-bottom:1px solid var(--stp-line);
}
.stp-card-head-l{display:flex;align-items:center;gap:10px;}
.stp-card-head-r{display:flex;align-items:center;gap:10px;}
.stp-card-head h2{font-family:"Inter",sans-serif;font-size:13px;font-weight:600;}
.stp-mono-sm{font-family:"JetBrains Mono";font-size:11px;color:var(--stp-mute-2);}

/* ===== FORM ===== */
.stp-fsec{padding:18px 18px 16px;}
.stp-lbl{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--stp-mute);font-weight:500;margin-bottom:9px;}
.stp-lbl-actions{display:flex;gap:6px;}

/* Textarea */
.stp-ctrl{
  height:var(--stp-ctrl-h);border:1px solid var(--stp-line-2);background:var(--stp-surface);
  border-radius:var(--stp-radius-sm);color:var(--stp-ink);font:500 12.5px "Inter";
  padding:0 10px;display:inline-flex;align-items:center;gap:6px;
  outline:none;transition:border-color .15s,box-shadow .15s;
}
textarea.stp-ctrl{
  height:auto;padding:12px 14px;resize:vertical;line-height:1.7;
  font-family:"Inter",sans-serif;font-size:13px;width:100%;display:block;
}
textarea.stp-ctrl:focus{border-color:var(--stp-accent);box-shadow:0 0 0 3px var(--stp-accent-ring);}
textarea.stp-ctrl:hover:not(:focus){border-color:var(--stp-ink-2);}

/* TZ wrap */
.stp-tz-wrap{position:relative;}
.stp-tz-area{min-height:280px;padding-bottom:38px !important;}
.stp-tz-footer{
  position:absolute;left:0;right:0;bottom:0;
  display:flex;align-items:center;gap:8px;
  padding:8px 12px;
  border-top:1px solid var(--stp-line);
  background:color-mix(in oklab,var(--stp-bg) 60%,var(--stp-surface));
  border-radius:0 0 var(--stp-radius-sm) var(--stp-radius-sm);
  pointer-events:none;
}
.stp-tz-stat{font-family:"JetBrains Mono";font-size:11px;color:var(--stp-mute-2);}
.stp-spacer{flex:1;}
.stp-tz-actions{display:flex;gap:6px;pointer-events:all;}

/* TZ chip buttons */
.stp-tz-chip{
  display:inline-flex;align-items:center;gap:5px;height:22px;padding:0 8px;
  font:500 11.5px "Inter";color:var(--stp-ink-2);background:var(--stp-surface);
  border:1px solid var(--stp-line-2);border-radius:999px;cursor:pointer;
}
.stp-tz-chip:hover{border-color:var(--stp-ink);}

/* Form footer */
.stp-form-foot{
  display:flex;align-items:center;gap:12px;padding:13px 18px;
  border-top:1px solid var(--stp-line);
  background:color-mix(in oklab,var(--stp-bg) 50%,var(--stp-surface));
  border-radius:0 0 var(--stp-radius-lg) var(--stp-radius-lg);flex-wrap:wrap;
}

/* ===== PROGRESS ===== */
.stp-progress-card{
  margin-bottom:20px;padding:20px 22px;
  background:var(--stp-surface);border:1px solid var(--stp-line);
  border-radius:var(--stp-radius-lg);box-shadow:var(--stp-shadow-card);
}
.stp-progress-inner{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.stp-spinner{
  width:22px;height:22px;
  border:2.5px solid var(--stp-line-2);border-top-color:var(--stp-ink);
  border-radius:50%;animation:stp-spin .7s linear infinite;flex-shrink:0;
}
@keyframes stp-spin{to{transform:rotate(360deg);}}
.stp-progress-title{font:600 13px "Inter Tight";color:var(--stp-ink);}
.stp-progress-sub{font-size:12.5px;color:var(--stp-mute);margin-top:2px;}
.stp-progress-bar{height:5px;border-radius:4px;background:var(--stp-line);overflow:hidden;}
.stp-progress-fill{
  width:0%;height:100%;background:var(--stp-ink);border-radius:4px;
  animation:stp-prog 100s linear forwards;
}
@keyframes stp-prog{
  0%{width:0%}15%{width:12%}35%{width:30%}55%{width:50%}
  75%{width:68%}90%{width:82%}100%{width:92%}
}

/* ===== PLACEHOLDER ===== */
.stp-result-ph{
  margin-bottom:20px;border:1.5px dashed var(--stp-line-2);border-radius:var(--stp-radius-lg);
  padding:40px 22px;display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;
}
.stp-ph-ic{width:44px;height:44px;border-radius:12px;background:var(--stp-chip);display:grid;place-items:center;color:var(--stp-mute);}
.stp-ph-title{font-size:14px;font-weight:600;color:var(--stp-ink-2);}
.stp-ph-desc{font-size:12.5px;color:var(--stp-mute);max-width:46ch;}

/* ===== RESULT CARD ===== */
.stp-res-card{margin-bottom:20px;}
.stp-res-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding:14px 18px;border-bottom:1px solid var(--stp-line);
}
.stp-res-head-l{display:flex;align-items:center;gap:10px;}
.stp-res-head h2{font:600 14px "Inter Tight";}
.stp-res-actions{display:flex;gap:7px;flex-wrap:wrap;}

/* Meta row */
.stp-meta-row{
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  padding:10px 18px;border-bottom:1px solid var(--stp-line);
  font-size:12.5px;color:var(--stp-mute);
}
.stp-m{display:flex;align-items:center;gap:5px;}
.stp-m b{color:var(--stp-ink);font-family:"JetBrains Mono";font-weight:500;}
.stp-pill-ok{
  display:inline-flex;align-items:center;gap:5px;height:20px;padding:0 8px;
  border-radius:999px;font:600 10.5px "Inter";
  background:var(--stp-success-soft);color:var(--stp-accent-ink);
  border:1px solid color-mix(in oklab,var(--stp-accent) 22%,transparent);
}
.stp-pill-dot{width:5px;height:5px;border-radius:50%;background:var(--stp-accent);}

/* Article body */
.stp-article-body{padding:24px 22px;line-height:1.8;font-size:14px;color:var(--stp-ink-2);max-height:700px;overflow-y:auto;}
.stp-article-body h1{font-size:22px;font-weight:700;color:var(--stp-ink);margin:0 0 18px;letter-spacing:-.02em;line-height:1.25;}
.stp-article-body h2{font-size:16px;font-weight:600;color:var(--stp-ink);margin:28px 0 10px;letter-spacing:-.01em;}
.stp-article-body h3{font-size:14px;font-weight:600;color:var(--stp-ink-2);margin:18px 0 8px;}
.stp-article-body p{margin:0 0 14px;}
.stp-article-body ul,.stp-article-body ol{margin:0 0 14px 18px;padding:0;}
.stp-article-body li{margin-bottom:5px;}
.stp-article-body strong{font-weight:600;}

/* Copy hint */
.stp-copy-hint{
  display:flex;align-items:center;gap:10px;
  padding:12px 18px;border-top:1px dashed var(--stp-line);
  font-size:12.5px;color:var(--stp-mute);
}
.stp-copy-hint a{color:var(--stp-accent-ink);font-weight:500;text-decoration:none;cursor:pointer;}
.stp-copy-hint a:hover{text-decoration:underline;}

/* ===== HISTORY ===== */
.stp-history-card{margin-bottom:20px;}
.stp-hist-list{display:flex;flex-direction:column;}
.stp-hist-empty{padding:30px 18px;text-align:center;color:var(--stp-mute-2);font-size:13px;}
.stp-hr{
  display:flex;align-items:center;gap:12px;padding:12px 18px;
  border-bottom:1px solid var(--stp-line);
  transition:background .1s;cursor:pointer;
}
.stp-hr:last-child{border-bottom:none;}
.stp-hr:hover{background:color-mix(in oklab,var(--stp-bg) 55%,white);}
.stp-h-ic{
  width:32px;height:32px;border-radius:8px;display:grid;place-items:center;flex-shrink:0;
  background:var(--stp-success-soft);color:var(--stp-accent);
}
.stp-h-info{flex:1;min-width:0;}
.stp-h-name{font:600 13px "Inter Tight";color:var(--stp-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.stp-h-meta-row{display:flex;align-items:center;gap:7px;margin-top:2px;flex-wrap:wrap;}
.stp-hm{font-size:11.5px;color:var(--stp-mute);font-family:"JetBrains Mono";}
.stp-sep3{width:3px;height:3px;border-radius:50%;background:var(--stp-mute-2);}
.stp-pill-sm{
  display:inline-flex;align-items:center;gap:4px;height:20px;padding:0 8px;
  border-radius:999px;font:600 10.5px "Inter";
  background:var(--stp-success-soft);color:var(--stp-accent-ink);
  flex-shrink:0;
}
.stp-h-acts{display:flex;gap:6px;flex-shrink:0;}

/* History expanded detail */
.stp-h-detail{
  padding:14px 18px 14px 62px;
  border-bottom:1px solid var(--stp-line);
  background:color-mix(in oklab,var(--stp-bg) 70%,var(--stp-surface));
}
.stp-h-detail-content{
  max-height:300px;overflow-y:auto;padding:16px;
  background:var(--stp-surface);border:1px solid var(--stp-line);
  border-radius:var(--stp-radius);font-size:13.5px;line-height:1.7;color:var(--stp-ink-2);
}
.stp-h-detail-content h1{font-size:18px;margin:0 0 12px;font-weight:700;color:var(--stp-ink);}
.stp-h-detail-content h2{font-size:15px;margin:18px 0 8px;font-weight:600;color:var(--stp-ink);}
.stp-h-detail-content h3{font-size:13.5px;margin:14px 0 6px;font-weight:600;color:var(--stp-ink-2);}
.stp-h-detail-content p{margin:0 0 10px;}
.stp-h-detail-actions{display:flex;gap:6px;margin-top:10px;}

/* ===== AUTH NOTICE ===== */
.stp-notice-auth{
  padding:20px 24px;background:var(--stp-surface);border:1px solid var(--stp-line);
  border-radius:var(--stp-radius-lg);font-size:14px;color:var(--stp-mute);text-align:center;
}
.stp-notice-auth a{color:var(--stp-accent-ink);font-weight:600;text-decoration:none;}
.stp-notice-auth a:hover{text-decoration:underline;}

/* ===== ERROR ===== */
.stp-error-bar{
  padding:14px 18px;background:var(--stp-danger-soft);
  border:1px solid color-mix(in oklab,var(--stp-danger) 25%,transparent);
  border-radius:var(--stp-radius);color:var(--stp-danger);font-size:13px;font-weight:500;
  margin-bottom:20px;
}

/* ===== GENERATOR ROW (Offers / FAQ) ===== */
.stp-gen-row{display:flex;align-items:flex-end;gap:16px;flex-wrap:wrap;}
.stp-gen-field{display:flex;flex-direction:column;gap:6px;}
.stp-gen-label{font-size:12.5px;color:var(--stp-mute);font-weight:500;}
.stp-gen-input-group{
  display:inline-flex;align-items:center;gap:0;
  border:1px solid var(--stp-line-2);border-radius:var(--stp-radius-sm);
  overflow:hidden;height:var(--stp-ctrl-h);background:var(--stp-surface);
}
.stp-gen-minus,.stp-gen-plus{
  width:32px;height:100%;border:none;background:var(--stp-chip);
  color:var(--stp-ink);font-size:16px;font-weight:500;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background .12s;
}
.stp-gen-minus:hover,.stp-gen-plus:hover{background:var(--stp-line-2);}
.stp-gen-num{
  width:48px;height:100%;border:none;border-left:1px solid var(--stp-line-2);
  border-right:1px solid var(--stp-line-2);text-align:center;
  font:600 13px "JetBrains Mono";color:var(--stp-ink);background:var(--stp-surface);
  outline:none;-moz-appearance:textfield;
}
.stp-gen-num::-webkit-outer-spin-button,.stp-gen-num::-webkit-inner-spin-button{-webkit-appearance:none;margin:0;}
.stp-gen-range-group{display:flex;align-items:center;gap:8px;}
.stp-gen-range-label{font-size:12px;color:var(--stp-mute-2);font-weight:500;}

/* Sub-progress (inline) */
.stp-sub-progress{
  padding:16px 18px;border-top:1px solid var(--stp-line);
  background:color-mix(in oklab,var(--stp-bg) 50%,var(--stp-surface));
}
.stp-sub-progress .stp-progress-inner{margin-bottom:0;}

/* Sub-result */
.stp-sub-result{border-top:1px solid var(--stp-line);}
.stp-sub-result-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 18px;border-bottom:1px solid var(--stp-line);
  background:color-mix(in oklab,var(--stp-bg) 50%,var(--stp-surface));
}
.stp-sub-result-actions{display:flex;gap:6px;}
.stp-sub-result-body{
  padding:20px 22px;line-height:1.8;font-size:13.5px;color:var(--stp-ink-2);
  max-height:500px;overflow-y:auto;
}
.stp-sub-result-body p{margin:0 0 12px;}
.stp-sub-result-body strong{font-weight:600;color:var(--stp-ink);}

/* ===== INLINE OPTION TILES ===== */
.stp-inline-options{
  display:flex;align-items:stretch;gap:10px;
  padding:0 18px 16px;flex-wrap:wrap;
}
.stp-opt-tile{cursor:pointer;-webkit-user-select:none;user-select:none;flex:1;min-width:160px;max-width:260px;}
.stp-opt-tile-input{position:absolute;opacity:0;width:0;height:0;}
.stp-opt-tile-box{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:10px 14px;border-radius:var(--stp-radius);
  border:1px solid var(--stp-line-2);background:var(--stp-surface);
  transition:all .18s ease;overflow:hidden;
}
.stp-opt-tile-box:hover{border-color:color-mix(in oklab,var(--stp-accent) 50%,var(--stp-line-2));}

/* Indicator — left accent bar */
.stp-opt-tile-indicator{
  position:absolute;left:0;top:0;bottom:0;width:3px;
  background:transparent;border-radius:0 3px 3px 0;
  transition:background .18s;
}

/* Icon circle */
.stp-opt-tile-icon{
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
  width:32px;height:32px;border-radius:8px;
  background:var(--stp-chip);color:var(--stp-mute);
  transition:all .18s;
}

/* Text block */
.stp-opt-tile-text{display:flex;flex-direction:column;gap:1px;min-width:0;}
.stp-opt-tile-title{
  font:600 12.5px/1.3 "Inter Tight","Inter",sans-serif;
  color:var(--stp-ink-2);letter-spacing:-.01em;
  transition:color .18s;
}
.stp-opt-tile-desc{
  font:400 11px/1.3 "Inter",sans-serif;
  color:var(--stp-mute-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

/* ── Active state ── */
.stp-opt-tile-input:checked ~ .stp-opt-tile-box{
  border-color:var(--stp-accent);
  background:var(--stp-accent-soft);
  box-shadow:0 0 0 3px var(--stp-accent-ring);
}
.stp-opt-tile-input:checked ~ .stp-opt-tile-box .stp-opt-tile-indicator{
  background:var(--stp-accent);
}
.stp-opt-tile-input:checked ~ .stp-opt-tile-box .stp-opt-tile-icon{
  background:color-mix(in oklab,var(--stp-accent) 14%,transparent);
  color:var(--stp-accent-ink);
}
.stp-opt-tile-input:checked ~ .stp-opt-tile-box .stp-opt-tile-title{
  color:var(--stp-accent-ink);
}

.stp-opt-expand{
  display:none;
  padding:0 18px 14px;
  align-items:center;gap:12px;flex-wrap:wrap;
  animation:stp-expand-in .2s ease;
}
@keyframes stp-expand-in{
  from{opacity:0;transform:translateY(-4px);}
  to{opacity:1;transform:translateY(0);}
}

/* ===== RESPONSIVE ===== */
@media(max-width:800px){
  .stp{padding:20px 16px 60px;}
  .stp-page-head{flex-direction:column;align-items:flex-start;}
  .stp-res-head{flex-direction:column;align-items:flex-start;}
  .stp-res-actions{width:100%;}
  .stp-h-acts{display:none;}
  .stp-h-detail{padding-left:18px;}
  .stp-gen-row{flex-direction:column;align-items:flex-start;gap:12px;}
  .stp-gen-range-group{flex-wrap:wrap;}
  .stp-opt-expand{padding:0 14px 12px;}
  .stp-inline-options{padding:0 14px 12px;gap:8px;}
  .stp-opt-tile{min-width:140px;}
}