/* ====== Tool Detail Page Styles (Dark Theme) ====== */
/* Shares base styles from site.css, this file adds tool-page-specific styles */

/* ====== Tool Hero ====== */
.tool-hero {
  position: relative;
  padding: 60px 0 40px;
  text-align: center;
  overflow: hidden;
}
.tool-hero::before {
  content: '';
  position: absolute;
  top: -120px; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
  opacity: 0.25;
  pointer-events: none;
}
.tool-hero__breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 24px;
}
.tool-hero__breadcrumb a {
  color: var(--accent-light);
  text-decoration: none;
  transition: opacity 0.2s;
}
.tool-hero__breadcrumb a:hover { opacity: 0.7; }
.tool-hero__icon {
  width: 72px; height: 72px;
  border-radius: 20px;
  background: var(--accent-soft);
  border: 1px solid rgba(99,102,241,0.15);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  margin-bottom: 20px;
  box-shadow: 0 8px 32px rgba(99,102,241,0.15);
}
.tool-hero h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text-strong);
}
.tool-hero__desc {
  margin: 14px auto 0;
  max-width: 520px;
  font-size: 16px;
  color: var(--muted);
  line-height: 1.75;
}
.tool-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 20px;
}
.tool-hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
}
.tool-hero__tag--check::before {
  content: '✓';
  color: var(--emerald);
  font-weight: 700;
}

/* ====== Upload Area ====== */
.upload-section { padding: 0 0 60px; }
.upload-area {
  position: relative;
  max-width: 680px;
  margin: 0 auto;
  padding: 56px 40px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 2px dashed var(--line-strong);
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(12px);
}
.upload-area:hover, .upload-area.is-dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(79,70,229,0.1);
}
.upload-area__icon {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid rgba(79,70,229,0.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 18px;
}
.upload-area h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-strong);
}
.upload-area p {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--muted);
}
.upload-area__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  padding: 12px 28px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border: 0;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 6px 20px var(--accent-glow);
}
.upload-area__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px var(--accent-glow);
}
.upload-area__formats {
  margin-top: 14px;
  font-size: 12px;
  color: var(--muted);
}
.upload-area--locked {
  border-style: solid;
  cursor: default;
}
.upload-area--locked:hover {
  transform: none;
}
.upload-area__btn--link {
  text-decoration: none;
}

/* ====== Processing State ====== */
.processing-panel {
  display: none;
  max-width: 680px;
  margin: 0 auto;
  padding: 40px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-soft);
  text-align: center;
  backdrop-filter: blur(12px);
}
.processing-panel.is-active { display: block; }
.processing-panel__spinner {
  width: 56px; height: 56px;
  border: 3px solid var(--line-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 20px;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
.processing-panel h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-strong);
}
.processing-panel p {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--muted);
}
.processing-panel__progress {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-alt);
  margin-top: 24px;
  overflow: hidden;
}
.processing-panel__bar {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  background-size: 200% 200%;
  animation: gradientShift 2s ease infinite;
  transition: width 0.3s ease;
  width: 0%;
}

/* ====== Result Panel ====== */
.result-panel {
  display: none;
  max-width: 680px;
  margin: 0 auto;
  padding: 40px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-soft);
  text-align: center;
  backdrop-filter: blur(12px);
}
.result-panel.is-active { display: block; }
.result-panel__icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: rgba(52,211,153,0.1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 16px;
}
.result-panel h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-strong);
}
.result-panel p {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--muted);
}
.result-panel__actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 28px;
}
.result-panel__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  border: 0;
  cursor: pointer;
  transition: all 0.3s;
}
.result-panel__btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
  box-shadow: 0 6px 20px var(--accent-glow);
}
.result-panel__btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px var(--accent-glow);
}
.result-panel__btn--secondary {
  background: var(--glass);
  color: var(--accent-light);
  border: 1px solid var(--glass-border);
}
.result-panel__btn--secondary:hover {
  background: var(--bg-alt);
}
.result-panel__btn--history {
  background: transparent;
  color: var(--accent, #6366f1);
  border: 1px dashed var(--accent, #6366f1);
  text-decoration: none;
}
.result-panel__btn--history:hover {
  background: rgba(99, 102, 241, 0.08);
}
.result-panel__preview {
  margin-top: 24px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--glass-border);
}
.result-panel__preview img {
  width: 100%;
  max-height: 400px;
  object-fit: contain;
  background: var(--bg-soft);
}

/* ====== How-to Steps ====== */
.tool-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}
.tool-step {
  text-align: center;
  padding: 28px 20px;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-soft);
  transition: all 0.3s;
}
.tool-step:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}
.tool-step__num {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
  font-size: 16px;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  box-shadow: 0 4px 16px var(--accent-glow);
}
.tool-step h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-strong);
}
.tool-step p {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

/* ====== Related Tools ====== */
.related-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

/* ====== FAQ (details/summary) ====== */
.tool-page-faq .faq-item {
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  background: var(--surface);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
}
.tool-page-faq .faq-item[open] {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-soft);
}
.tool-page-faq .faq-item__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 28px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-strong);
  list-style: none;
  transition: color 0.2s;
}
.tool-page-faq .faq-item__q::-webkit-details-marker { display: none; }
.tool-page-faq .faq-item__q:hover { color: var(--accent-light); }
.tool-page-faq .faq-item__a {
  padding: 0 28px 24px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}

/* ====== QR CTA (tool page) ====== */
.qr-cta-card {
  padding: 48px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--accent-soft), rgba(8,145,178,0.04));
  border: 1px solid rgba(79,70,229,0.1);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.qr-cta-card::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
  opacity: 0.3;
  pointer-events: none;
}
.qr-cta-inner {
  display: flex;
  align-items: center;
  gap: 40px;
  justify-content: center;
  position: relative;
  z-index: 1;
}
.qr-cta__text h2 {
  margin: 0;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--text-strong);
}
.qr-cta__text p {
  margin: 12px 0 0;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  max-width: 400px;
}
.qr-cta__code {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.qr-cta__code img {
  width: 150px; height: 150px;
  border-radius: var(--radius-lg);
  border: 2px solid var(--glass-border);
  box-shadow: var(--shadow);
  background: #fff;
}
.qr-cta__code span {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

/* ====== Related Tools (tool-card--sm) ====== */
.tool-card--sm {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--glass-border);
  transition: all 0.25s ease;
  cursor: pointer;
  position: relative;
  text-decoration: none;
}
.tool-card--sm:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}
.tool-card--sm .tool-card__icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.tool-card--sm .tool-card__body { flex: 1; min-width: 0; }
.tool-card--sm .tool-card__body h3 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}
.tool-card--sm .tool-card__body p {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}
.tool-card--sm .tool-card__tag {
  position: absolute;
  top: 8px; right: 8px;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  background: var(--accent-soft);
  color: var(--accent-light);
}

/* ====== Tool Params Form ====== */
.tool-params-form {
  max-width: 900px;
  margin: 0 auto 28px;
  padding: 24px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(255,255,255,0.9));
  border: 1px solid rgba(124, 58, 237, 0.2);
  box-shadow: 0 18px 45px rgba(79, 70, 229, 0.12);
  position: relative;
  overflow: hidden;
}
.tool-params-form::before {
  content: '';
  position: absolute;
  inset: 0;
  border-top: 4px solid var(--primary, #7c3aed);
  pointer-events: none;
}
.tool-params-form__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
}
.tool-params-form__eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--primary-soft, rgba(124, 58, 237, 0.1));
  color: var(--primary, #7c3aed);
  font-size: 12px;
  font-weight: 800;
}
.tool-params-form h2 {
  margin: 10px 0 0;
  font-size: 20px;
  line-height: 1.35;
  color: var(--text);
}
.tool-params-form p {
  margin: 8px 0 0;
}
.tool-params-form__head p {
  max-width: 620px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-soft);
}
.tool-params-form__count {
  flex: 0 0 auto;
  padding: 8px 12px;
  border-radius: 10px;
  background: var(--bg-soft, #f7f7fb);
  color: var(--text-soft);
  font-size: 12px;
  font-weight: 700;
}
.tool-params-form__inner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.tool-param-field {
  padding: 16px;
  border: 1px solid var(--line, #e5e7eb);
  border-radius: 14px;
  background: var(--surface, #fff);
  box-shadow: var(--shadow-sm, 0 8px 20px rgba(15, 23, 42, 0.04));
  min-width: 0;
}
.tool-param-field--wide {
  grid-column: 1 / -1;
}
.tool-param-field.is-hidden {
  display: none;
}
.tool-param-field__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}
.tool-param-field__label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 800;
  color: var(--text);
}
.tool-param-field__required,
.tool-param-field__optional {
  padding: 2px 7px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
}
.tool-param-field__required {
  color: #b91c1c;
  background: rgba(239, 68, 68, 0.1);
}
.tool-param-field__optional {
  color: var(--primary, #7c3aed);
  background: var(--primary-soft, rgba(124, 58, 237, 0.1));
}
.tool-param-field__meta {
  flex: 0 0 auto;
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
}
.tool-param-field__desc {
  margin: 0 0 12px;
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.65;
}
.tool-param-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}
.tool-param-option {
  position: relative;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  min-height: 68px;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--line, #e5e7eb);
  background: var(--bg, #fff);
  cursor: pointer;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease, background .2s ease;
}
.tool-param-option:hover,
.tool-param-option.is-selected {
  border-color: var(--primary, #7c3aed);
  background: var(--primary-soft, rgba(124, 58, 237, 0.08));
  box-shadow: 0 10px 26px rgba(124, 58, 237, 0.13);
}
.tool-param-option:hover {
  transform: translateY(-1px);
}
.tool-param-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.tool-param-option__mark {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 2px solid var(--line-strong, #d1d5db);
  background: #fff;
  box-shadow: inset 0 0 0 4px #fff;
  flex: 0 0 auto;
  margin-top: 1px;
}
.tool-param-option.is-selected .tool-param-option__mark {
  border-color: var(--primary, #7c3aed);
  background: var(--primary, #7c3aed);
}
.tool-param-option__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}
.tool-param-option__title {
  font-size: 14px;
  line-height: 1.35;
  font-weight: 800;
  color: var(--text);
}
.tool-param-option__desc {
  font-size: 12px;
  line-height: 1.55;
  color: var(--text-soft);
}
.tool-param-field__input {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--line, var(--glass-border, #e5e7eb));
  border-radius: 12px;
  font-size: 14px;
  color: var(--text);
  background: var(--bg, #fff);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.tool-param-field__input:focus {
  border-color: var(--primary, #7c3aed);
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.1);
}
.tool-param-field__textarea {
  min-height: 112px;
  resize: vertical;
  line-height: 1.6;
}
.tool-param-field__hint {
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

/* ====== Tool SEO Content ====== */
.tool-seo-section {
  padding-top: 0;
}
.tool-seo-content {
  max-width: 880px;
  margin: 0 auto;
  padding: 28px 32px;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-soft);
}
.tool-seo-content h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.35;
  color: var(--text-strong, var(--text));
}
.tool-seo-content p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

/* ====== Responsive ====== */
@media (max-width: 820px) {
  .tool-hero { padding: 48px 0 32px; }
  .upload-area { padding: 40px 24px; }
  .tool-steps { grid-template-columns: 1fr; }
  .result-panel__actions { flex-direction: column; }
  .qr-cta-inner { flex-direction: column; text-align: center; }
  .tool-params-form__head { flex-direction: column; }
  .tool-params-form__inner { grid-template-columns: 1fr; }
  .tool-param-field--wide { grid-column: auto; }
}
@media (max-width: 560px) {
  .upload-area { padding: 32px 18px; }
  .upload-area__btn { width: 100%; justify-content: center; }
  .processing-panel, .result-panel { padding: 28px 18px; }
  .related-tools-grid { grid-template-columns: 1fr; }
  .qr-cta-card { padding: 28px 18px; }
  .tool-params-form { padding: 18px; }
  .tool-param-field { padding: 14px; }
  .tool-param-options { grid-template-columns: 1fr; }
  .tool-seo-content { padding: 24px 18px; }
}