/* ============================================================
   TORNADOTOOLS — COMPONENTS.CSS  v2.0
   Shared reusable UI for all tool pages + SEO landing blocks

   ARCHITECTURE INDEX
   ──────────────────
   1.  BUTTONS  (primary · secondary · danger · ghost · icon)
   2.  BADGES & PILLS
   3.  CARDS  (tool-card · feature-card · generic .card)
   4.  PANELS  (tool-panel · info-box · result-display)
   5.  TABS & MODE-SWITCHES  (unified .tabs system)
   6.  FORMS & INPUTS  (label · input · textarea · select · range · file · color)
   7.  RESULTS  (result-item · result-text · result-meta · copy-btn)
   8.  TOASTS & FEEDBACK
   9.  TOOL PAGE SHELL  (tool-body · tool-page · tool-header · sticky-area)
   10. GRIDS  (tools-grid · features-grid)
   11. SEO CONTENT BLOCKS  (FAQ · how-to · benefits · trust · breadcrumbs)
   12. ABOUT / LEGAL PAGE LAYOUT
   13. ADSENSE SLOTS
   14. CALCULATOR  (display · grid · buttons)
   15. TOOL-SPECIFIC FORM ROWS  (subject-row · base-row · mode-switch)
   16. QR GENERATOR CONTROLS
   17. RESPONSIVE
   ============================================================ */


/* ============================================================
   1. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  text-decoration: none;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  -webkit-appearance: none;
  appearance: none;
}

/* Shine overlay on hover */
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.10);
  opacity: 0;
  transition: var(--transition);
}

.btn:hover::before { opacity: 1; }
.btn:active        { transform: scale(0.97); }

/* Primary */
.btn.primary {
  background: var(--accent-grad);
  color: #fff;
  box-shadow: var(--shadow-glow-purple), 0 4px 20px rgba(0, 0, 0, 0.40);
}
.btn.primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow-hover);
}
.btn.primary:active { transform: translateY(0) scale(0.97); }

/* Secondary / outline */
.btn.secondary {
  background: transparent;
  color: var(--neon-cyan);
  border: 1px solid rgba(0, 245, 255, 0.35);
  box-shadow: 0 0 12px rgba(0, 245, 255, 0.08), inset 0 0 12px rgba(0, 245, 255, 0.04);
}
.btn.secondary:hover {
  border-color: var(--neon-cyan);
  background: rgba(0, 245, 255, 0.06);
  transform: translateY(-3px);
  box-shadow: 0 0 24px rgba(0, 245, 255, 0.20);
}
.btn.secondary:active { transform: translateY(0) scale(0.97); }

/* Danger */
.btn.danger {
  background: rgba(255, 50, 50, 0.15);
  color: var(--neon-red);
  border: 1px solid var(--border-danger);
}
.btn.danger:hover {
  background: rgba(255, 50, 50, 0.25);
  box-shadow: 0 0 20px rgba(255, 50, 50, 0.30);
}

/* Ghost (text-only) */
.btn.ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}
.btn.ghost:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.20);
  background: var(--bg-glass);
}

/* Size variants */
.btn.sm {
  font-size: 13px;
  padding: 8px 18px;
}

.btn.lg {
  font-size: 17px;
  padding: 18px 44px;
}

/* Full-width variant */
.btn.block {
  width: 100%;
  flex: 1;
  min-width: 120px;
  padding: 14px 24px;
  font-size: 14px;
}

/* Icon-only button */
.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-glass);
  color: var(--text-muted);
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
}

.btn-icon:hover {
  background: rgba(0, 245, 255, 0.06);
  border-color: rgba(0, 245, 255, 0.25);
  color: var(--neon-cyan);
}

/* Danger icon button */
.btn-icon.danger {
  border-color: rgba(255, 80, 80, 0.20);
  background: rgba(255, 80, 80, 0.08);
  color: var(--neon-red);
}

.btn-icon.danger:hover {
  background: rgba(255, 80, 80, 0.20);
  box-shadow: 0 0 12px rgba(255, 80, 80, 0.20);
}


/* ============================================================
   2. BADGES & PILLS
   ============================================================ */

/* Base pill / badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 600;
  white-space: nowrap;
  border: 1px solid transparent;
}

.badge.cyan {
  background: rgba(0, 245, 255, 0.08);
  border-color: rgba(0, 245, 255, 0.20);
  color: var(--neon-cyan);
}

.badge.purple {
  background: rgba(108, 99, 255, 0.10);
  border-color: rgba(108, 99, 255, 0.25);
  color: var(--accent-1);
}

.badge.pink {
  background: rgba(255, 0, 110, 0.08);
  border-color: rgba(255, 0, 110, 0.20);
  color: var(--neon-pink);
}

.badge.green {
  background: rgba(0, 255, 136, 0.08);
  border-color: rgba(0, 255, 136, 0.20);
  color: var(--neon-green);
}

.badge.muted {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border-subtle);
  color: var(--text-muted);
}

/* Card tag (smaller, used in card top rows) */
.card-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

/* New / hot indicators */
.pill-new {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
  background: var(--accent-grad);
  color: #fff;
}


/* ============================================================
   3. CARDS
   ============================================================ */

/* ─── Generic card ─── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: rgba(108, 99, 255, 0.30);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.40), 0 0 20px rgba(108, 99, 255, 0.05);
}

/* Top accent bar (appears on hover) */
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent-grad);
  transform: scaleX(0);
  transition: var(--transition);
  transform-origin: left;
}

.card:hover::before { transform: scaleX(1); }

/* ─── Tool card ─── */
.tool-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--sp-lg);
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
  overflow: hidden;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* Scan-line effect */
.tool-card::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 60%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
  transition: 0.6s ease;
}
.tool-card:hover::before { left: 140%; }

/* Corner glow */
.tool-card::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 120px; height: 120px;
  background: radial-gradient(circle at top right, rgba(108, 99, 255, 0.15), transparent 60%);
  border-radius: 0 var(--radius-lg) 0 0;
  transition: var(--transition);
  opacity: 0;
}

.tool-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow:
    0 0 0 1px rgba(0, 245, 255, 0.15),
    0 12px 40px rgba(0, 0, 0, 0.60),
    0 0 30px rgba(0, 245, 255, 0.08);
  background: var(--bg-card-hover);
}
.tool-card:hover::after { opacity: 1; }

/* ─── Feature card ─── */
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  backdrop-filter: blur(10px);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent-grad);
  transform: scaleX(0);
  transition: var(--transition);
  transform-origin: left;
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover {
  border-color: rgba(108, 99, 255, 0.30);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.40), 0 0 20px rgba(108, 99, 255, 0.05);
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 18px;
  display: block;
}

.feature-card h3,
.card h3 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feature-card p,
.card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ─── Card icon ─── */
.card-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 900;
  font-family: var(--font-display);
  position: relative;
  flex-shrink: 0;
  transition: var(--transition);
}

.card-icon.cyan   { background: rgba(0, 245, 255, 0.08);  border: 1px solid rgba(0, 245, 255, 0.20);  color: var(--neon-cyan);   box-shadow: 0 0 20px rgba(0, 245, 255, 0.10); }
.card-icon.purple { background: rgba(108, 99, 255, 0.10); border: 1px solid rgba(108, 99, 255, 0.25); color: var(--accent-1);    box-shadow: 0 0 20px rgba(108, 99, 255, 0.10); }
.card-icon.pink   { background: rgba(255, 0, 110, 0.08);  border: 1px solid rgba(255, 0, 110, 0.20);  color: var(--neon-pink);   box-shadow: 0 0 20px rgba(255, 0, 110, 0.10); }
.card-icon.green  { background: rgba(0, 255, 136, 0.08);  border: 1px solid rgba(0, 255, 136, 0.20);  color: var(--neon-green);  box-shadow: 0 0 20px rgba(0, 255, 136, 0.10); }

.tool-card:hover .card-icon { box-shadow: 0 0 30px currentColor; }

/* Card top row */
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Card content */
.card-content { flex: 1; }

.card-content h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: var(--sp-sm);
  color: var(--text-primary);
}

.card-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Card action link */
.card-action {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--neon-cyan);
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: var(--transition);
}

.card-action-arrow {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid rgba(0, 245, 255, 0.30);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition);
}

.tool-card:hover .card-action-arrow {
  background: var(--neon-cyan);
  color: #000;
  border-color: var(--neon-cyan);
  transform: translateX(4px);
}


/* ============================================================
   4. PANELS  (glass containers)
   ============================================================ */

/* Primary panel — tool UI container */
.tool-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--sp-xl);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow:
    0 0 0 1px var(--border-subtle),
    0 20px 60px rgba(0, 0, 0, 0.50),
    0 0 40px rgba(108, 99, 255, 0.04);
  position: relative;
  overflow: hidden;
}

/* Top accent line shared across panels */
.tool-panel::before,
.info-box-accent::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 245, 255, 0.40), transparent);
}

/* Cyan tinted info box */
.info-box {
  background: rgba(0, 245, 255, 0.04);
  border: 1px solid rgba(0, 245, 255, 0.12);
  border-radius: var(--radius-md);
  padding: var(--sp-md) 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Large result display (numbers, big values) */
.result-display {
  text-align: center;
  padding: var(--sp-xl);
  background: var(--bg-inset);
  border: 1px solid rgba(0, 245, 255, 0.12);
  border-radius: var(--radius-lg);
  margin-top: var(--sp-md);
}

.result-display .result-value {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 6px;
  animation: glowPulse 2s ease-in-out infinite;
}

.result-display .result-caption {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-muted);
}


/* ============================================================
   5. TABS & MODE-SWITCHES  (unified system)
   ============================================================ */

/* Tab strip */
.tabs {
  display: flex;
  gap: 6px;
  margin-bottom: var(--sp-lg);
  background: var(--bg-glass);
  padding: 6px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}

.tab-btn {
  flex: 1;
  min-width: 70px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
}

.tab-btn.active {
  background: var(--accent-grad);
  color: #fff;
  box-shadow: 0 0 16px rgba(108, 99, 255, 0.30);
}

/* Tab content panes */
.tab-pane          { display: none; }
.tab-pane.active   { display: block; }

/* Legacy aliases (backward compat) */
.calc-tabs    { /* extends .tabs */
  display: flex; gap: 6px; margin-bottom: var(--sp-lg);
  background: var(--bg-glass); padding: 6px;
  border-radius: var(--radius-md); border: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}
.calc-section          { display: none; }
.calc-section.active   { display: block; }

/* Filter pills (tag filters) */
.tool-filters {
  display: flex;
  gap: var(--sp-sm);
  flex-wrap: wrap;
  margin: var(--sp-sm) 0 4px;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: var(--sp-sm) 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
  background: var(--bg-glass);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.filter-btn:hover {
  border-color: rgba(0, 245, 255, 0.20);
  color: var(--text-secondary);
}

.filter-btn.active {
  background: rgba(0, 245, 255, 0.08);
  border-color: rgba(0, 245, 255, 0.40);
  color: var(--neon-cyan);
  box-shadow: 0 0 12px rgba(0, 245, 255, 0.10);
}


/* ============================================================
   6. FORMS & INPUTS
   ============================================================ */

/* Form group wrapper */
.field {
  position: relative;
  margin-bottom: var(--sp-md);
}

/* Label */
.tool-label,
.field-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--sp-sm);
}

/* Core input styles — shared across all field types */
.tool-input,
textarea.tool-input,
input.tool-input,
select.tool-input {
  width: 100%;
  padding: var(--sp-md) 20px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  outline: none;
  transition: var(--transition);
  resize: vertical;
  -webkit-appearance: none;
  appearance: none;
}

.tool-input:focus,
textarea.tool-input:focus,
input.tool-input:focus,
select.tool-input:focus {
  border-color: rgba(0, 245, 255, 0.40);
  background: rgba(0, 245, 255, 0.03);
  box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.08), 0 0 20px rgba(0, 245, 255, 0.05);
}

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

/* Textarea */
textarea.tool-input {
  min-height: 110px;
  max-width: 100%;
}

/* Select */
select.tool-input {
  background-color: rgba(6, 12, 26, 0.90);
  cursor: pointer;
}

select.tool-input option {
  background: #0c1628;
  color: var(--text-primary);
}

/* Readonly / output */
.tool-input[readonly] {
  background: rgba(0, 245, 255, 0.03);
  border-color: rgba(0, 245, 255, 0.12);
  color: var(--neon-cyan);
  font-family: var(--font-mono);
  cursor: default;
}

/* Clear (×) button inside input */
.input-clear {
  position: absolute;
  right: 14px; top: 14px;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: var(--text-muted);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.input-clear:hover {
  background: rgba(255, 50, 50, 0.20);
  color: var(--neon-red);
}

/* Range slider */
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.10);
  border-radius: 2px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--accent-grad);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(108, 99, 255, 0.40);
}

/* Color picker */
input[type="color"] {
  width: 56px; height: 44px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: none;
  cursor: pointer;
  padding: 2px;
  transition: var(--transition);
}

input[type="color"]:hover {
  box-shadow: 0 0 12px rgba(108, 99, 255, 0.30);
  transform: scale(1.05);
}

/* File upload */
input[type="file"] {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  background: var(--bg-glass);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}

input[type="file"]:hover {
  border-color: rgba(0, 245, 255, 0.30);
  background: rgba(0, 245, 255, 0.03);
}

/* Actions row below inputs */
.tool-actions {
  display: flex;
  gap: 12px;
  margin: var(--sp-md) 0;
  flex-wrap: wrap;
}

.tool-actions .btn {
  flex: 1;
  min-width: 120px;
  padding: 14px var(--sp-lg);
  font-size: 14px;
}


/* ============================================================
   7. RESULTS
   ============================================================ */
.tool-results {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: var(--sp-lg);
}

.result-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

/* Left accent stripe */
.result-item::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--accent-grad);
  opacity: 0;
  transition: var(--transition);
}

.result-item:hover {
  border-color: rgba(0, 245, 255, 0.20);
  background: rgba(0, 245, 255, 0.03);
  transform: translateX(4px);
}
.result-item:hover::before { opacity: 1; }

.result-text {
  font-size: 20px;
  line-height: 1.6;
  letter-spacing: 0.2px;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text-primary);
}

.result-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-sm);
}

.result-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Copy button */
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 245, 255, 0.20);
  background: rgba(0, 245, 255, 0.06);
  color: var(--neon-cyan);
  cursor: pointer;
  transition: var(--transition);
}

.copy-btn:hover {
  background: rgba(0, 245, 255, 0.12);
  border-color: rgba(0, 245, 255, 0.40);
  box-shadow: 0 0 12px rgba(0, 245, 255, 0.15);
}

.copy-btn.copied {
  color: var(--neon-green);
  border-color: rgba(0, 255, 136, 0.30);
  background: rgba(0, 255, 136, 0.06);
}

/* Load-more */
.load-more-btn {
  width: 100%;
  margin-top: var(--sp-md);
  padding: var(--sp-md);
  border-radius: var(--radius-md);
  border: 1px solid rgba(108, 99, 255, 0.30);
  background: rgba(108, 99, 255, 0.08);
  color: var(--accent-1);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
}

.load-more-btn:hover {
  background: rgba(108, 99, 255, 0.15);
  border-color: rgba(108, 99, 255, 0.50);
  box-shadow: 0 0 24px rgba(108, 99, 255, 0.15);
}


/* ============================================================
   8. TOASTS & FEEDBACK
   ============================================================ */
.copy-toast {
  position: fixed;
  bottom: var(--sp-xl);
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: rgba(0, 255, 136, 0.10);
  border: 1px solid rgba(0, 255, 136, 0.30);
  color: var(--neon-green);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 12px var(--sp-lg);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(10px);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s;
  opacity: 0;
  z-index: 9999;
  pointer-events: none;
}

.copy-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Alert banners */
.alert {
  padding: var(--sp-md) 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: var(--sp-md);
  border: 1px solid transparent;
}

.alert.info {
  background: rgba(0, 245, 255, 0.06);
  border-color: rgba(0, 245, 255, 0.18);
  color: var(--neon-cyan);
}

.alert.success {
  background: rgba(0, 255, 136, 0.06);
  border-color: rgba(0, 255, 136, 0.18);
  color: var(--neon-green);
}

.alert.error {
  background: rgba(255, 50, 50, 0.06);
  border-color: var(--border-danger);
  color: var(--neon-red);
}


/* ============================================================
   9. TOOL PAGE SHELL
   ============================================================ */
body.tool-body {
  padding-top: var(--navbar-height);
}

.tool-page {
  max-width: 860px;
  margin: var(--sp-2xl) auto 80px;
  padding: 0 var(--sp-lg);
}

/* Tool header */
.tool-header {
  text-align: center;
  padding: var(--sp-2xl) 0 var(--sp-2xl);
  position: relative;
}

/* Back link */
.tool-back {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--text-muted);
  text-decoration: none;
  padding: var(--sp-sm) 14px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.tool-back:hover {
  color: var(--neon-cyan);
  border-color: rgba(0, 245, 255, 0.30);
  background: rgba(0, 245, 255, 0.04);
}

/* Tool eyebrow */
.tool-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--neon-cyan);
  margin-bottom: 12px;
  display: block;
  opacity: 0.8;
}

.tool-header h1 {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 10px;
  background: linear-gradient(135deg, var(--text-primary) 40%, var(--neon-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tool-header p {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto;
}

/* Sticky input zone */
.sticky-area {
  position: sticky;
  top: var(--navbar-height);
  z-index: 20;
  background: rgba(2, 4, 8, 0.90);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 20px var(--sp-lg) var(--sp-md);
  margin: 0 -24px var(--sp-lg);
}


/* ============================================================
   10. GRIDS  (tool directory + features)
   ============================================================ */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-lg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-lg);
}


/* ============================================================
   11. SEO CONTENT BLOCKS
   ============================================================ */

/* ─── FAQ ─── */
.faq-section {
  padding: var(--sp-4xl) 0;
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(0, 245, 255, 0.15);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-md);
  padding: 20px var(--sp-lg);
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
}

.faq-question:hover { color: var(--neon-cyan); }

.faq-icon {
  width: 24px; height: 24px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  color: var(--neon-cyan);
  border-color: rgba(0, 245, 255, 0.30);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-item.open .faq-answer { max-height: 600px; }

.faq-answer-inner {
  padding: 0 var(--sp-lg) 20px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ─── How-to steps ─── */
.how-to-section { padding: var(--sp-4xl) 0; }

.steps-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
  max-width: 760px;
  margin: 0 auto;
  counter-reset: step;
}

.step-item {
  display: flex;
  gap: var(--sp-lg);
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--sp-lg);
  transition: var(--transition);
}

.step-item:hover { border-color: rgba(108, 99, 255, 0.25); }

.step-num {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(108, 99, 255, 0.10);
  border: 1px solid rgba(108, 99, 255, 0.30);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-1);
  flex-shrink: 0;
}

.step-body h3 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.step-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ─── Benefits grid ─── */
.benefits-section { padding: var(--sp-4xl) 0; }

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-lg);
}

.benefit-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  text-align: center;
  transition: var(--transition);
}

.benefit-item:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 245, 255, 0.20);
  box-shadow: var(--shadow-neon);
}

.benefit-icon {
  font-size: 36px;
  margin-bottom: var(--sp-md);
  display: block;
}

.benefit-item h3 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--sp-sm);
}

.benefit-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ─── SEO text / explanation block ─── */
.seo-content {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--sp-2xl) 0;
}

.seo-content h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--sp-md);
  margin-top: var(--sp-2xl);
}

.seo-content h2:first-child { margin-top: 0; }

.seo-content p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: var(--sp-md);
}

.seo-content ul {
  list-style: none;
  padding: 0;
  margin-bottom: var(--sp-md);
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.seo-content ul li {
  display: flex;
  gap: var(--sp-sm);
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.seo-content ul li::before {
  content: '▸';
  color: var(--neon-cyan);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ─── Breadcrumbs ─── */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  flex-wrap: wrap;
  padding: var(--sp-md) 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1px;
}

.breadcrumbs a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.breadcrumbs a:hover { color: var(--neon-cyan); }

.breadcrumbs .sep {
  color: var(--text-muted);
  opacity: 0.4;
}

.breadcrumbs .current {
  color: var(--text-secondary);
}

/* ─── Internal-link block ─── */
.related-tools {
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--sp-2xl);
  margin-top: var(--sp-2xl);
}

.related-tools h3 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: var(--sp-md);
  text-transform: uppercase;
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
}

.related-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
  background: var(--bg-glass);
}

.related-link:hover {
  color: var(--neon-cyan);
  border-color: rgba(0, 245, 255, 0.30);
  background: rgba(0, 245, 255, 0.04);
}

/* ─── Trust signals ─── */
.trust-section {
  padding: var(--sp-4xl) 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-lg);
  text-align: center;
}

.trust-item {
  padding: var(--sp-lg);
}

.trust-num {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 6px;
}

.trust-label {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 1px;
  text-transform: uppercase;
}


/* ============================================================
   12. ABOUT / LEGAL PAGE LAYOUT
   ============================================================ */
.page-content {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--sp-2xl) var(--sp-lg) 80px;
}

.page-content h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: var(--sp-md);
  background: var(--accent-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-content h2 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin: var(--sp-2xl) 0 var(--sp-md);
}

.page-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: var(--sp-md);
}

.page-content a {
  color: var(--neon-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-content a:hover { color: var(--accent-2); }

.page-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-bottom: var(--sp-2xl);
}


/* ============================================================
   13. ADSENSE SLOTS
   ============================================================ */

/* Generic ad slot wrapper — prevents layout shift */
.ad-slot {
  width: 100%;
  overflow: hidden;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Leaderboard (728×90) */
.ad-slot.leaderboard {
  min-height: 90px;
  margin: var(--sp-xl) 0;
}

/* Rectangle (300×250) */
.ad-slot.rectangle {
  min-height: 250px;
  max-width: 336px;
  margin: var(--sp-lg) auto;
}

/* In-content strip */
.ad-slot.in-content {
  min-height: 100px;
  margin: var(--sp-2xl) 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: var(--sp-md) 0;
}

/* Sidebar (160×600) */
.ad-slot.sidebar {
  min-height: 600px;
  max-width: 160px;
}


/* ============================================================
   14. CALCULATOR
   ============================================================ */

/* Display screen */
.calc-display {
  width: 100%;
  padding: 20px var(--sp-lg);
  background: rgba(0, 0, 0, 0.40);
  border: 1px solid rgba(0, 245, 255, 0.10);
  border-radius: var(--radius-md);
  color: var(--neon-cyan);
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 400;
  text-align: right;
  letter-spacing: 2px;
  margin-bottom: var(--sp-md);
  outline: none;
  caret-color: var(--neon-cyan);
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.30);
  cursor: default;
}

/* Button grid */
.calc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

/* Base calc button */
.calc-btn {
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-glass-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
}

.calc-btn:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.calc-btn:active {
  transform: scale(0.93);
  background: rgba(255, 255, 255, 0.13);
}

.calc-btn.op {
  background: rgba(108, 99, 255, 0.12);
  border-color: rgba(108, 99, 255, 0.25);
  color: var(--accent-1);
}
.calc-btn.op:hover {
  background: rgba(108, 99, 255, 0.22);
  box-shadow: 0 0 16px rgba(108, 99, 255, 0.20);
}

.calc-btn.equal {
  grid-column: span 4;
  background: var(--accent-grad);
  border: none;
  color: #fff;
  font-size: 20px;
  box-shadow: 0 0 24px rgba(108, 99, 255, 0.30);
}
.calc-btn.equal:hover {
  box-shadow: 0 0 36px rgba(0, 245, 255, 0.40);
  transform: translateY(-2px);
}

.calc-btn.danger {
  background: rgba(255, 50, 50, 0.10);
  border-color: rgba(255, 50, 50, 0.20);
  color: var(--neon-red);
}
.calc-btn.danger:hover {
  background: rgba(255, 50, 50, 0.20);
  box-shadow: 0 0 16px rgba(255, 50, 50, 0.20);
}

/* Scientific buttons */
.calc-grid.sci { grid-template-columns: repeat(4, 1fr); }

.sci-btn {
  padding: var(--sp-md);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: rgba(0, 245, 255, 0.04);
  color: var(--neon-cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.sci-btn:hover {
  background: rgba(0, 245, 255, 0.10);
  border-color: rgba(0, 245, 255, 0.30);
  box-shadow: 0 0 12px rgba(0, 245, 255, 0.10);
  transform: translateY(-2px);
}
.sci-btn:active { transform: scale(0.93); }

/* History panel */
.calc-history {
  margin-top: var(--sp-lg);
  background: var(--bg-inset);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px var(--sp-md);
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
}

#historyList {
  max-height: 160px;
  overflow-y: auto;
}

.history-item {
  padding: 10px var(--sp-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.history-item:hover {
  background: rgba(0, 245, 255, 0.04);
  color: var(--neon-cyan);
  padding-left: 22px;
}


/* ============================================================
   15. TOOL-SPECIFIC FORM ROWS
   ============================================================ */

/* CGPA mode switch */
.mode-switch {
  display: flex;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-lg);
  background: var(--bg-glass);
  padding: 6px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.mode-btn {
  flex: 1;
  padding: 12px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
}

.mode-btn.active {
  background: var(--accent-grad);
  color: #fff;
  box-shadow: 0 0 16px rgba(108, 99, 255, 0.30);
}

.mode-btn:hover:not(.active) { color: var(--text-secondary); }

/* Subject row (CGPA input rows) */
.subject-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
  padding: 12px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.subject-row:hover { border-color: rgba(0, 245, 255, 0.12); }

.subject-row input,
.subject-row select {
  width: 100%;
  padding: 12px 14px;
  background: rgba(0, 0, 0, 0.30);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  outline: none;
  transition: var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

.subject-row input:focus,
.subject-row select:focus {
  border-color: rgba(0, 245, 255, 0.30);
  box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.06);
}

.subject-row select {
  background-color: #0a1220;
  cursor: pointer;
}

.subject-row select option {
  background: #0a1220;
  color: var(--text-primary);
}

/* Remove-subject icon button (alias for .btn-icon.danger) */
.remove-subject {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 80, 80, 0.20);
  background: rgba(255, 80, 80, 0.08);
  color: var(--neon-red);
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.remove-subject:hover {
  background: rgba(255, 80, 80, 0.20);
  box-shadow: 0 0 12px rgba(255, 80, 80, 0.20);
}

/* Number converter: base row */
.base-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-md);
  margin-bottom: var(--sp-md);
}

.base-box label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--sp-sm);
}


/* ============================================================
   16. QR GENERATOR CONTROLS
   ============================================================ */
.qr-customization {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--sp-lg);
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
  margin: var(--sp-lg) 0;
}

.qr-section label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.qr-mode-switch {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.qr-mode-switch label {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px var(--sp-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-glass);
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
}

.qr-mode-switch input { display: none; }

.qr-mode-switch input:checked + span,
.qr-mode-switch label:has(input:checked) {
  background: rgba(108, 99, 255, 0.10);
  border-color: rgba(108, 99, 255, 0.40);
  color: var(--accent-1);
  box-shadow: 0 0 16px rgba(108, 99, 255, 0.10);
}

.qr-mode-switch label:hover {
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text-secondary);
}

.qr-output {
  display: flex;
  justify-content: center;
  margin: var(--sp-lg) 0;
}

#qrCanvas {
  background: #fff;
  padding: 12px;
  border-radius: var(--radius-md);
  max-width: 100%;
  box-shadow: 0 0 40px rgba(108, 99, 255, 0.20);
}

/* Color/gradient picker rows */
#gradientBox,
#singleColorBox {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 10px;
}

#eyeBox {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}


/* ============================================================
   17. RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .tools-grid,
  .features-grid,
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  /* Tool page */
  .tool-page   { padding: 0 var(--sp-md); }
  .tool-panel  { padding: 20px var(--sp-md); }

  .sticky-area {
    top: var(--navbar-height-mobile);
    padding: var(--sp-md);
    margin: 0 -16px var(--sp-md);
  }

  .tool-header { padding: 36px 0 var(--sp-lg); }

  .tool-back {
    position: static;
    transform: none;
    display: inline-flex;
    margin-bottom: var(--sp-md);
  }

  /* Grids */
  .tools-grid,
  .features-grid,
  .benefits-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-md);
  }

  .trust-grid { grid-template-columns: repeat(2, 1fr); }

  /* Calculator */
  .calc-grid   { gap: 7px; }
  .calc-btn    { padding: var(--sp-md) 10px; font-size: 16px; }
  .calc-display { font-size: 22px; padding: var(--sp-md) 18px; }

  /* CGPA */
  .subject-row { grid-template-columns: 1fr 1fr auto; gap: var(--sp-sm); }

  /* Number converter */
  .base-row { grid-template-columns: 1fr; }

  /* QR */
  .qr-mode-switch { flex-direction: column; }

  /* Steps */
  .step-item { flex-direction: column; gap: var(--sp-sm); }

  /* SEO */
  .seo-content { padding: var(--sp-xl) 0; }
}

@media (max-width: 480px) {
  .tool-actions   { flex-direction: column; }
  .trust-grid     { grid-template-columns: 1fr 1fr; }
  .hero-buttons   { flex-direction: column; align-items: center; }
}