/* ==========================================================================
   Skill WP AI Plagiarism Checker Pro — Frontend
   Modern AI-themed checker (v3.1)
   ========================================================================== */

.swpaipc-frontend-wrap {
  --swpf-bg: #ffffff;
  --swpf-surface: #f7f8fc;
  --swpf-surface-2: #eef0fa;
  --swpf-border: #e3e6f3;
  --swpf-text: #1a1f3a;
  --swpf-text-dim: #5a6385;
  --swpf-text-mute: #8a91ad;
  --swpf-primary: #7c5cff;
  --swpf-primary-2: #00d4ff;
  --swpf-success: #10b981;
  --swpf-warning: #f59e0b;
  --swpf-danger: #ef4444;
  --swpf-info: #3b82f6;
  --swpf-grad: linear-gradient(135deg, #7c5cff 0%, #00d4ff 100%);
  --swpf-grad-soft: linear-gradient(135deg, rgba(124,92,255,0.1), rgba(0,212,255,0.08));
  --swpf-radius: 18px;
  --swpf-shadow: 0 20px 60px -20px rgba(124, 92, 255, 0.25);

  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
  color: var(--swpf-text); max-width: 1100px; margin: 0 auto; padding: 24px 16px;
}
.swpaipc-frontend-wrap *, .swpaipc-frontend-wrap *::before, .swpaipc-frontend-wrap *::after { box-sizing: border-box; }

.swpaipc-container {
  background: var(--swpf-bg);
  border: 1px solid var(--swpf-border);
  border-radius: var(--swpf-radius);
  box-shadow: var(--swpf-shadow);
  overflow: hidden;
  position: relative;
}
.swpaipc-container::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--swpf-grad);
}

/* Header */
.swpaipc-header {
  text-align: center; padding: 36px 28px 26px;
  background:
    radial-gradient(600px 200px at 50% 0%, rgba(124,92,255,0.10), transparent 70%),
    var(--swpf-bg);
  border-bottom: 1px solid var(--swpf-border);
}
.swpaipc-title { display: inline-flex; align-items: center; gap: 12px; margin: 0 0 10px; font-size: 28px; font-weight: 800; color: var(--swpf-text); letter-spacing: -0.02em; }
.swpaipc-title-icon { width: 36px; height: 36px; padding: 7px; border-radius: 10px; background: var(--swpf-grad); color: #fff; }
.swpaipc-subtitle { margin: 0; color: var(--swpf-text-dim); font-size: 15px; }

.swpaipc-main { padding: 24px 28px 32px; }

/* Check type selector */
.swpaipc-check-types { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-bottom: 22px; }
.swpaipc-check-type {
  cursor: pointer; padding: 16px; border-radius: 14px;
  background: var(--swpf-surface); border: 2px solid var(--swpf-border);
  transition: all .2s; text-align: center; position: relative;
}
.swpaipc-check-type:hover { border-color: var(--swpf-primary); transform: translateY(-2px); box-shadow: 0 10px 25px -10px rgba(124,92,255,0.3); }
.swpaipc-check-type.active { background: var(--swpf-grad-soft); border-color: var(--swpf-primary); box-shadow: 0 8px 22px -8px rgba(124,92,255,0.45); }
.swpaipc-check-type input { position: absolute; opacity: 0; }
.swpaipc-check-type .check-type-icon { font-size: 26px; display: block; margin-bottom: 6px; }
.swpaipc-check-type .check-type-label { display: block; font-weight: 700; font-size: 14px; color: var(--swpf-text); }
.swpaipc-check-type .check-type-desc { display: block; font-size: 12px; color: var(--swpf-text-dim); margin-top: 4px; }

/* Textarea */
.swpaipc-input-area { margin-bottom: 16px; }
.swpaipc-textarea {
  width: 100%; min-height: 220px; padding: 16px 18px;
  border: 2px solid var(--swpf-border); border-radius: 14px;
  font-family: inherit; font-size: 15px; line-height: 1.6; color: var(--swpf-text);
  background: var(--swpf-surface); resize: vertical; transition: all .2s;
}
.swpaipc-textarea:focus { outline: none; border-color: var(--swpf-primary); background: #fff; box-shadow: 0 0 0 4px rgba(124,92,255,0.15); }
.swpaipc-text-stats { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 10px; padding: 10px 14px; background: var(--swpf-surface); border-radius: 10px; font-size: 13px; color: var(--swpf-text-dim); }
.swpaipc-text-stats strong { color: var(--swpf-text); font-weight: 700; }

/* Actions */
.swpaipc-actions { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.swpaipc-check-button {
  flex: 1; min-width: 220px; padding: 14px 26px;
  background: var(--swpf-grad); color: #fff; border: none; border-radius: 12px;
  font-size: 15px; font-weight: 700; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  box-shadow: 0 12px 28px -10px rgba(124,92,255,0.6); transition: all .2s;
}
.swpaipc-check-button:hover { transform: translateY(-2px); box-shadow: 0 18px 36px -12px rgba(124,92,255,0.75); }
.swpaipc-check-button:disabled { opacity: .65; cursor: not-allowed; transform: none; }
.swpaipc-clear-button {
  padding: 14px 22px; background: transparent; color: var(--swpf-text-dim);
  border: 2px solid var(--swpf-border); border-radius: 12px; cursor: pointer;
  font-size: 14px; font-weight: 600; transition: all .2s;
}
.swpaipc-clear-button:hover { border-color: var(--swpf-danger); color: var(--swpf-danger); }
.swpaipc-recaptcha-notice { font-size: 11px; color: var(--swpf-text-mute); text-align: center; padding: 8px; }
.swpaipc-recaptcha-notice a { color: var(--swpf-primary); }

/* Progress */
.swpaipc-progress-container {
  padding: 20px; margin: 22px 0; background: var(--swpf-grad-soft);
  border: 1px solid var(--swpf-border); border-radius: 14px;
}
.swpaipc-progress-bar { width: 100%; height: 14px; background: var(--swpf-surface-2); border-radius: 999px; overflow: hidden; position: relative; }
.swpaipc-progress-fill { height: 100%; width: 0%; background: var(--swpf-grad); border-radius: 999px; transition: width .3s ease; position: relative; overflow: hidden; }
.swpaipc-progress-fill::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5), transparent); animation: swpfShimmer 1.5s infinite; }
@keyframes swpfShimmer { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }
.swpaipc-progress-info { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; font-size: 13px; color: var(--swpf-text-dim); font-weight: 600; gap: 14px; flex-wrap: wrap; }
.swpaipc-progress-info #swpaipc-progress-percent { font-size: 18px; color: var(--swpf-primary); font-weight: 800; }
.swpaipc-progress-info #swpaipc-countdown-timer { padding: 4px 10px; background: rgba(255,255,255,0.6); border-radius: 999px; color: var(--swpf-text); }
.swpaipc-ad-container { margin-top: 16px; padding: 14px; background: rgba(255,255,255,0.7); border-radius: 10px; text-align: center; }

/* Results */
.swpaipc-results-container { margin-top: 24px; animation: swpfFadeIn .5s ease; }
@keyframes swpfFadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.swpaipc-results-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 22px; }
.swpaipc-result-card { padding: 22px 18px; background: var(--swpf-bg); border: 1px solid var(--swpf-border); border-radius: 14px; text-align: center; box-shadow: 0 8px 24px -12px rgba(0,0,0,0.1); transition: transform .25s; }
.swpaipc-result-card:hover { transform: translateY(-3px); }
.swpaipc-result-card .result-circle { position: relative; width: 120px; height: 120px; margin: 0 auto 12px; }
.swpaipc-result-card .result-ring { width: 100%; height: 100%; transform: rotate(-90deg); }
.swpaipc-result-card .ring-bg { fill: none; stroke: var(--swpf-surface-2); stroke-width: 10; }
.swpaipc-result-card .ring-fill { fill: none; stroke-width: 10; stroke-linecap: round; stroke-dasharray: 326.7; stroke-dashoffset: 326.7; transition: stroke-dashoffset 1.2s ease; }
.swpaipc-result-card.plagiarism .ring-fill { stroke: var(--swpf-danger); }
.swpaipc-result-card.unique .ring-fill { stroke: var(--swpf-success); }
.swpaipc-result-card.ai .ring-fill { stroke: var(--swpf-info); }
.swpaipc-result-card .result-value { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 26px; font-weight: 800; color: var(--swpf-text); }
.swpaipc-result-card .result-label { font-weight: 700; font-size: 14px; color: var(--swpf-text-dim); text-transform: uppercase; letter-spacing: 0.05em; }

.swpaipc-results-detail { padding: 20px; background: var(--swpf-surface); border-radius: 14px; margin-bottom: 18px; border: 1px solid var(--swpf-border); }
.swpaipc-plagiarized-item { padding: 12px 14px; margin-bottom: 10px; background: rgba(239,68,68,0.06); border-left: 3px solid var(--swpf-danger); border-radius: 8px; }
.swpaipc-plagiarized-item .plag-text { color: var(--swpf-text); font-style: italic; font-size: 14px; margin-bottom: 6px; }
.swpaipc-plagiarized-item .plag-source { font-size: 12px; color: var(--swpf-text-dim); }
.swpaipc-ai-indicators { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.swpaipc-ai-indicator { padding: 6px 12px; background: rgba(59,130,246,0.1); color: var(--swpf-info); border-radius: 999px; font-size: 12px; font-weight: 600; }

.swpaipc-sources-section, .swpaipc-grammar-section { padding: 20px; background: var(--swpf-surface); border-radius: 14px; margin-bottom: 18px; border: 1px solid var(--swpf-border); }
.swpaipc-sources-section h3, .swpaipc-grammar-section h3 { margin: 0 0 14px; font-size: 16px; color: var(--swpf-text); }
.swpaipc-source-item { display: flex; align-items: center; gap: 10px; padding: 10px 14px; background: var(--swpf-bg); border-radius: 8px; margin-bottom: 8px; border: 1px solid var(--swpf-border); font-size: 13px; }
.swpaipc-source-item .source-icon { color: var(--swpf-primary); }

.swpaipc-grammar-item { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 10px 14px; background: rgba(245,158,11,0.06); border-left: 3px solid var(--swpf-warning); border-radius: 8px; margin-bottom: 8px; font-size: 13px; }
.grammar-type { padding: 2px 8px; background: var(--swpf-warning); color: #fff; border-radius: 4px; font-size: 11px; font-weight: 700; text-transform: uppercase; }
.grammar-error { color: var(--swpf-danger); text-decoration: line-through; font-weight: 600; }
.grammar-arrow { color: var(--swpf-text-mute); }
.grammar-correction { color: var(--swpf-success); font-weight: 600; }
.grammar-msg { width: 100%; color: var(--swpf-text-dim); font-size: 12px; }

.swpaipc-assessment { padding: 16px 20px; background: var(--swpf-grad-soft); border-radius: 12px; border: 1px solid var(--swpf-border); font-size: 14px; color: var(--swpf-text); }

/* Spinner */
.swpaipc-spinner { display: inline-block; width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff; border-radius: 50%; animation: swpfSpin 0.8s linear infinite; vertical-align: middle; }
@keyframes swpfSpin { to { transform: rotate(360deg); } }

/* Error / notice toast */
.swpaipc-notice { padding: 14px 18px; border-radius: 10px; margin: 12px 0; font-size: 14px; }
.swpaipc-notice.error { background: rgba(239,68,68,0.08); color: var(--swpf-danger); border: 1px solid rgba(239,68,68,0.2); }
.swpaipc-notice.success { background: rgba(16,185,129,0.08); color: var(--swpf-success); border: 1px solid rgba(16,185,129,0.2); }

/* Dark theme */
.swpaipc-frontend-wrap[data-theme="dark"] {
  --swpf-bg: #0f1530; --swpf-surface: #161c3a; --swpf-surface-2: #1f274a;
  --swpf-border: rgba(255,255,255,0.08); --swpf-text: #e9ecff; --swpf-text-dim: #a8b0d4; --swpf-text-mute: #7a82a8;
}

@media (max-width: 640px) {
  .swpaipc-title { font-size: 22px; }
  .swpaipc-main { padding: 20px 18px 26px; }
  .swpaipc-check-button { width: 100%; }
}