/* ── Tools Hub ──────────────────────────────────────────────────────── */

.tools-hub {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

/* ── Hero ── */
.tools-hub-hero {
  text-align: center;
  margin-bottom: 48px;
}

.tools-hub-hero h1 {
  font-size: var(--fs-metric);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 12px;
}

.tools-hub-subtitle {
  color: var(--text-dim);
  font-size: var(--fs-xl);
  line-height: 1.6;
  max-width: 600px;
  margin: 0 auto;
}

/* ── Section ── */
.tools-hub-section {
  margin-bottom: 40px;
}

.tools-hub-category {
  font-size: var(--fs-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-dim);
  margin-bottom: 16px;
  padding-left: 4px;
}

/* ── Grid ── */
.tools-hub-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

/* ── Card ── */
.tool-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: rgba(13, 27, 20, 0.55);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  box-shadow: 0 1px 2px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.04);
  transition: border-color var(--dur-mid) var(--ease),
              box-shadow var(--dur-mid) var(--ease),
              transform var(--dur-mid) var(--ease);
}

.tool-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255,255,255,0.06);
  transform: translateY(-1px);
  text-decoration: none;
}

/* ── Card icon ── */
.tool-card-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: var(--radius);
  color: var(--accent);
}

.tool-card-icon svg {
  width: 20px;
  height: 20px;
}

/* ── Card body ── */
.tool-card-body {
  flex: 1;
  min-width: 0;
}

.tool-card-title {
  font-size: var(--fs-xl);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 4px;
  color: var(--text);
}

.tool-card-desc {
  font-size: var(--fs-md);
  line-height: 1.4;
  color: var(--text-dim);
  margin: 0;
}

/* ── Card arrow ── */
.tool-card-arrow {
  flex-shrink: 0;
  font-size: calc(var(--fs-base) + 4px);
  color: var(--text-muted);
  transition: color var(--dur-fast) var(--ease),
              transform var(--dur-fast) var(--ease);
}

.tool-card:hover .tool-card-arrow {
  color: var(--accent);
  transform: translateX(3px);
}

/* ── CTA ── */
.tools-hub-cta {
  text-align: center;
  margin-top: 56px;
  padding: 40px 24px;
  background: rgba(13, 27, 20, 0.55);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 1px 2px rgba(0,0,0,0.4), 0 8px 24px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.05);
}

.tools-hub-cta h2 {
  font-size: calc(var(--fs-base) + 8px);
  font-weight: 700;
  margin-bottom: 8px;
}

.tools-hub-cta p {
  color: var(--text-dim);
  font-size: var(--fs-xl);
  margin-bottom: 20px;
  line-height: 1.5;
}

/* .btn-primary — removed, uses base.css .btn .btn-primary */

/* ── Shared tool page layout ── */
.tool-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.tool-page-header {
  margin-bottom: 32px;
}

.tool-breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-md);
  color: var(--text-dim);
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.tool-breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
}

.tool-breadcrumb a:hover {
  color: var(--text);
}

.tool-breadcrumb-sep {
  opacity: 0.4;
}

.tool-page-header h1 {
  font-size: calc(var(--fs-base) + 14px);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 8px;
}

.tool-page-header p {
  color: var(--text-dim);
  font-size: var(--fs-xl);
  line-height: 1.5;
}

/* ── Tool input area (reusable) ── */
.tool-input-card {
  background: rgba(13, 27, 20, 0.55);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.4), 0 8px 24px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.05);
  transition: box-shadow var(--dur-mid) var(--ease), border-color var(--dur-mid);
}
.light .tool-input-card {
  background: rgba(250,250,245,0.90);
  border-color: transparent;
  box-shadow: var(--shadow-sm);
}

.tool-input-row {
  display: flex;
  gap: 12px;
}

.tool-input {
  flex: 1;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--fs-md);
  outline: none;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
  min-width: 0;
}

.tool-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow), inset 0 1px 2px rgba(0,0,0,0.08);
}

.tool-input::placeholder {
  color: var(--text-muted);
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent), #fff 10%) 0%, var(--accent) 50%, color-mix(in srgb, var(--accent), #000 20%) 100%);
  color: var(--on-accent);
  font-family: var(--font);
  font-size: var(--fs-md);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: filter var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
  box-shadow: 0 1px 2px rgba(0,0,0,0.2), 0 4px 12px var(--accent-glow), inset 0 1px 0 rgba(255,255,255,0.15);
}

.tool-btn:hover {
  filter: brightness(1.15);
  box-shadow: 0 2px 4px rgba(0,0,0,0.25), 0 6px 20px var(--accent-glow), inset 0 1px 0 rgba(255,255,255,0.2);
}

.tool-btn:active { transform: scale(0.97); }

.tool-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

.tool-btn--sm { padding: 7px 16px; font-size: var(--fs-md); }
.tool-btn--outline { background: transparent; border: 1px solid var(--border); color: var(--text); box-shadow: none; }
.tool-btn--outline:hover { border-color: var(--accent); color: var(--accent); filter: brightness(1.1); box-shadow: none; }

/* ── SERP fetch row ── */
.serp-fetch-row {
  display: flex; gap: 12px; margin-top: 16px; padding-top: 16px;
  border-top: 1px solid var(--border); align-items: center;
}
.serp-fetch-url { flex: 1; }

/* ── Tool results area ── */
.tool-results {
  background: rgba(13, 27, 20, 0.55);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.4), 0 8px 24px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.05);
}
.light .tool-results {
  background: rgba(250,250,245,0.90);
  border-color: transparent;
  box-shadow: var(--shadow-sm);
}

.tool-results-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: var(--fs-lg);
}

/* ── Light theme overrides ── */
.light .tool-card {
  background: rgba(250,250,245,0.90);
  border-color: transparent;
  box-shadow: var(--shadow-sm);
}
.light .tool-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(26,150,72,0.25);
}

.light .tools-hub-cta {
  background: rgba(250,250,245,0.90);
  border-color: transparent;
  box-shadow: var(--shadow-sm);
}

.light .tool-btn,
.light .tool-cta-btn {
  color: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 4px 12px rgba(22,163,74,0.2);
}
.light .tool-btn:hover,
.light .tool-cta-btn:hover {
  box-shadow: 0 2px 6px rgba(0,0,0,0.15), 0 6px 20px rgba(22,163,74,0.25);
}

/* ── Responsive ── */
@media (max-width: 767px) {
  .tools-hub {
    padding: 32px 16px 60px;
  }

  .tools-hub-hero {
    margin-bottom: 32px;
  }

  .tools-hub-hero h1 {
    font-size: calc(var(--fs-base) + 10px);
  }

  .tools-hub-subtitle {
    font-size: var(--fs-lg);
  }

  .tools-hub-grid {
    grid-template-columns: 1fr;
  }

  .tool-card {
    padding: 16px;
    gap: 12px;
  }

  .tool-card-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
  }

  .tool-card-icon svg {
    width: 18px;
    height: 18px;
  }

  .tool-card-title {
    font-size: var(--fs-lg);
  }

  .tool-card-desc {
    font-size: var(--fs-sm);
  }

  .tools-hub-cta {
    padding: 28px 16px;
    margin-top: 40px;
  }

  .tools-hub-cta h2 {
    font-size: calc(var(--fs-base) + 4px);
  }

  .tools-hub-cta p {
    font-size: var(--fs-lg);
  }

  /* Tool page responsive */
  .tool-page {
    padding: 24px 16px 60px;
  }

  .tool-page-header h1 {
    font-size: calc(var(--fs-base) + 8px);
  }

  .tool-input-row {
    flex-direction: column;
  }

  .serp-fetch-row {
    flex-direction: column;
  }

  .tool-btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .tools-hub-hero h1 {
    font-size: calc(var(--fs-base) + 7px);
  }

  .tool-card-arrow {
    display: none;
  }
}

/* ── Tool page hero ──────────────────────────────────────────────── */
.tool-hero {
  margin-bottom: 28px;
}

.tool-hero h1 {
  font-size: calc(var(--fs-base) + 14px);
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text);
}

.tool-subtitle {
  font-size: var(--fs-xl);
  color: var(--text-dim);
  margin: 0;
  line-height: 1.5;
}

/* ── Tool error ──────────────────────────────────────────────────── */
.tool-error {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--red);
  font-size: var(--fs-lg);
  font-weight: 500;
}

.tool-error-icon {
  font-size: calc(var(--fs-base) + 2px);
}

/* ── Tool badges ─────────────────────────────────────────────────── */
.tool-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--fs-sm);
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 9999px;
}

.tool-badge--ok {
  background: var(--green-bg);
  color: var(--green);
}

.tool-badge--warning {
  background: var(--yellow-bg);
  color: var(--yellow);
}

.tool-badge--error {
  background: var(--red-bg);
  color: var(--red);
}

.tool-badge--info {
  background: var(--bg-input);
  color: var(--text-dim);
}

/* ── Tool CTA ────────────────────────────────────────────────────── */
.tool-cta {
  text-align: center;
  padding: 40px 24px;
  background: rgba(13, 27, 20, 0.55);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 40px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.4), 0 8px 24px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.05);
}
.light .tool-cta {
  background: rgba(250,250,245,0.90);
  border-color: transparent;
  box-shadow: var(--shadow-sm);
}

.tool-cta h2 {
  font-size: calc(var(--fs-base) + 6px);
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text);
}

.tool-cta p {
  font-size: var(--fs-lg);
  color: var(--text-dim);
  margin: 0 0 20px;
}

.tool-cta-btn {
  display: inline-block;
  padding: 12px 32px;
  font-size: var(--fs-xl);
  font-weight: 600;
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent), #fff 10%) 0%, var(--accent) 50%, color-mix(in srgb, var(--accent), #000 20%) 100%);
  color: var(--on-accent);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: filter var(--dur-fast), transform var(--dur-fast);
  box-shadow: 0 1px 2px rgba(0,0,0,0.2), 0 4px 12px var(--accent-glow), inset 0 1px 0 rgba(255,255,255,0.15);
}

.tool-cta-btn:hover {
  filter: brightness(1.15);
  box-shadow: 0 2px 4px rgba(0,0,0,0.25), 0 6px 20px var(--accent-glow), inset 0 1px 0 rgba(255,255,255,0.2);
  text-decoration: none;
}

.tool-cta-btn:active {
  transform: scale(0.97);
}

/* ── Tool Guide (content section) ────────────────────────────────── */
.tool-guide {
  margin-bottom: 40px;
}

.tool-guide h2 {
  font-size: calc(var(--fs-base) + 6px);
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--text);
}

.tool-guide h3 {
  font-size: calc(var(--fs-base) + 2px);
  font-weight: 600;
  margin: 24px 0 10px;
  color: var(--text);
}

.tool-guide p {
  font-size: var(--fs-lg);
  color: var(--text-dim);
  line-height: 1.7;
  margin: 0 0 12px;
}

.tool-guide ul {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
}

.tool-guide li {
  position: relative;
  padding-left: 20px;
  font-size: var(--fs-lg);
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 6px;
}

.tool-guide li::before {
  content: '\2022';
  position: absolute;
  left: 4px;
  color: var(--accent);
  font-weight: 700;
}

/* ── Tool FAQ ────────────────────────────────────────────────────── */
.tool-faq {
  margin-bottom: 40px;
}

.tool-faq h2 {
  font-size: calc(var(--fs-base) + 6px);
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--text);
}

.tool-faq-item {
  margin-bottom: 16px;
}

.tool-faq-q {
  font-size: var(--fs-xl);
  font-weight: 600;
  color: var(--text);
  margin: 0 0 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tool-faq-q::before {
  content: '\25B8';
  color: var(--accent);
  transition: transform var(--dur-fast);
}

.tool-faq-item.open .tool-faq-q::before {
  transform: rotate(90deg);
}

.tool-faq-a {
  font-size: var(--fs-lg);
  color: var(--text-dim);
  line-height: 1.6;
  padding-left: 20px;
  display: none;
}

.tool-faq-item.open .tool-faq-a {
  display: block;
}

/* ── Related articles ─────────────────────────────────────────────── */
.tool-articles {
  margin-bottom: 40px;
}

.tool-articles h2 {
  font-size: calc(var(--fs-base) + 6px);
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--text);
}

.tool-articles-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tool-articles-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: rgba(13, 27, 20, 0.97);
  border: 1px solid rgba(30, 58, 46, 0.3);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: border-color var(--dur-fast), transform var(--dur-fast);
}

.tool-articles-list a::before {
  content: '📄';
  font-size: 16px;
  flex-shrink: 0;
}

.tool-articles-list a:hover {
  border-color: rgba(52,211,153,0.4);
  transform: translateX(4px);
}

.tool-articles-list a span {
  font-size: var(--fs-md);
  font-weight: 500;
  color: var(--text);
}

.light .tool-articles-list a {
  background: rgba(250,250,245,0.95);
  border-color: rgba(30,35,24,0.07);
}

.light .tool-articles-list a:hover {
  border-color: rgba(22,163,74,0.25);
}

/* ── Other tools ─────────────────────────────────────────────────── */
.tool-others {
  margin-bottom: 40px;
}

.tool-others h2 {
  font-size: calc(var(--fs-base) + 6px);
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--text);
}

.tool-others-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

/* Inner Light glassmorphism (design-system §2.10) */
.tool-others-card {
  display: flex;
  flex-direction: column;
  padding: 14px 16px;
  background: rgba(13, 27, 20, 0.97);
  border: 1px solid rgba(30, 58, 46, 0.3);
  border-radius: var(--radius-sm);
  text-decoration: none;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.10),
    inset 0 0 12px rgba(52,211,153,0.06),
    0 2px 8px rgba(0,0,0,0.3);
  transition: border-color var(--dur-mid) var(--ease), transform var(--dur-mid) var(--ease), box-shadow var(--dur-mid) var(--ease);
}

.tool-others-card:hover {
  border-color: rgba(52,211,153,0.4);
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.14),
    inset 0 0 16px rgba(52,211,153,0.10),
    0 4px 16px rgba(0,0,0,0.35);
}
.light .tool-others-card {
  background: rgba(250,250,245,0.95);
  border-color: rgba(30,35,24,0.07);
  box-shadow:
    inset 0 1px 0 rgba(250,250,245,0.6),
    inset 0 0 12px rgba(26,150,72,0.04),
    0 1px 3px rgba(30,35,24,0.06);
}
.light .tool-others-card:hover {
  border-color: rgba(26,150,72,0.25);
  box-shadow:
    inset 0 1px 0 rgba(250,250,245,0.7),
    inset 0 0 16px rgba(26,150,72,0.06),
    var(--shadow-md);
}

.tool-others-name {
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.tool-others-desc {
  font-size: var(--fs-sm);
  color: var(--text-dim);
  line-height: 1.4;
}

/* ── Tool page responsive (new sections) ─────────────────────────── */
@media (max-width: 767px) {
  .tool-hero h1 {
    font-size: calc(var(--fs-base) + 8px);
  }

  .tool-others-grid {
    grid-template-columns: 1fr 1fr;
  }

  .tool-cta {
    padding: 28px 16px;
  }
}

@media (max-width: 480px) {
  .tool-others-grid {
    grid-template-columns: 1fr;
  }
}