/* ============================================
   THE TOOLSS — PREMIUM TOOL PAGE THEME
   Glass-morphism design system for all tool pages
   Inspired by the main index.html design
   ============================================ */

/* ─── Google Fonts ─── */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:wght@300;400;500&family=JetBrains+Mono:wght@400;500&display=swap');

/* ─── CSS Variables ─── */
:root {
  --bg-primary: #07070f;
  --bg-secondary: #0e0e1a;
  --glass-bg: rgba(255,255,255,0.04);
  --glass-bg-hover: rgba(255,255,255,0.07);
  --glass-border: rgba(255,255,255,0.08);
  --glass-border-hover: rgba(255,255,255,0.14);
  --accent-violet: #7c6fff;
  --accent-cyan: #00d4ff;
  --accent-coral: #ff6b6b;
  --accent-green: #00ffaa;
  --accent-yellow: #ffd54f;
  --text-primary: #eeeeff;
  --text-muted: #6b6b8a;
  --text-dim: #4a4a6a;
  --card-radius: 20px;
  --card-radius-sm: 14px;
  --transition-smooth: 0.35s cubic-bezier(0.23, 1, 0.32, 1);
}

/* ─── Dark Mode (default) ─── */
:root,
[data-theme="dark"] {
  --bg-primary: #07070f;
  --bg-secondary: #0e0e1a;
  --glass-bg: rgba(255,255,255,0.04);
  --glass-bg-hover: rgba(255,255,255,0.07);
  --glass-border: rgba(255,255,255,0.08);
  --glass-border-hover: rgba(255,255,255,0.14);
  --text-primary: #eeeeff;
  --text-muted: #6b6b8a;
  --text-dim: #4a4a6a;
  --color-bg: #07070f;
  --color-surface: rgba(255,255,255,0.04);
  --color-surface-2: rgba(255,255,255,0.07);
  --color-border: rgba(255,255,255,0.08);
  --color-accent: #7c6fff;
  --color-accent-hover: #9b8fff;
  --color-text: #eeeeff;
  --color-text-muted: #6b6b8a;
  --color-success: #00ffaa;
  --color-error: #ff6b6b;
  --color-shadow: rgba(0,0,0,0.5);
  --color-card-hover-shadow: rgba(124,111,255,0.15);
}

/* ─── Light Mode ─── */
[data-theme="light"] {
  --bg-primary: #f0f0f8;
  --bg-secondary: #e8e8f2;
  --glass-bg: rgba(255,255,255,0.7);
  --glass-bg-hover: rgba(255,255,255,0.85);
  --glass-border: rgba(0,0,0,0.08);
  --glass-border-hover: rgba(124,111,255,0.2);
  --text-primary: #1a1a2e;
  --text-muted: #6b6b8a;
  --text-dim: #9a9ab0;
  --color-bg: #f0f0f8;
  --color-surface: rgba(255,255,255,0.7);
  --color-surface-2: rgba(255,255,255,0.85);
  --color-border: rgba(0,0,0,0.08);
  --color-accent: #7c6fff;
  --color-accent-hover: #6a5ce0;
  --color-text: #1a1a2e;
  --color-text-muted: #6b6b8a;
  --color-success: #00b894;
  --color-error: #e17055;
  --color-shadow: rgba(0,0,0,0.1);
  --color-card-hover-shadow: rgba(124,111,255,0.12);
}

/* ─── Base ─── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  position: relative;
}

/* ─── Animated Background ─── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 20%, rgba(124,111,255,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 80%, rgba(0,212,255,0.07) 0%, transparent 55%),
    radial-gradient(ellipse 40% 30% at 60% 40%, rgba(0,255,170,0.04) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* Noise grain */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ─── Floating Orbs ─── */
.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
  animation: floatOrb 12s ease-in-out infinite;
}
.orb-1 { width: 400px; height: 400px; background: rgba(124,111,255,0.08); top: -100px; left: -100px; animation-delay: 0s; }
.orb-2 { width: 300px; height: 300px; background: rgba(0,212,255,0.07); bottom: 10%; right: -80px; animation-delay: -4s; }
.orb-3 { width: 250px; height: 250px; background: rgba(0,255,170,0.05); top: 50%; left: 40%; animation-delay: -8s; }

@keyframes floatOrb {
  0%, 100% { transform: translate(0,0) scale(1); }
  33% { transform: translate(30px, -40px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* ─── Tool Container ─── */
.tool-container {
  position: relative;
  z-index: 1;
  max-width: 920px;
  margin: 0 auto;
  padding: 36px 24px 80px;
  width: 100%;
  flex: 1;
}

/* ─── Breadcrumb ─── */
.breadcrumb-nav {
  margin-bottom: 12px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  padding: 0;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.breadcrumb li + li::before {
  content: '›';
  margin-right: 6px;
  color: var(--text-dim);
}

.breadcrumb a {
  color: var(--accent-violet);
  text-decoration: none;
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: var(--accent-cyan);
}

/* ─── Back Button ─── */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  margin-bottom: 20px;
  padding: 8px 0;
  min-height: 44px;
  transition: color 0.25s ease;
  font-family: 'DM Sans', sans-serif;
}

.back-btn:hover {
  color: var(--accent-violet);
}

/* ─── Tool Title ─── */
.tool-title {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  letter-spacing: -1px;
  margin-bottom: 8px;
  color: var(--text-primary);
  line-height: 1.1;
}

.tool-description {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  font-weight: 300;
  letter-spacing: 0.2px;
  line-height: 1.6;
}

/* ─── Main Card (glass-morphism) — Premium ─── */
.card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius);
  padding: 32px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

/* Glow border on hover */
.card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--card-radius);
  padding: 1.5px;
  background: linear-gradient(135deg, var(--accent-violet), var(--accent-cyan), transparent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.card:hover::after {
  opacity: 1;
}

.card:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  box-shadow:
    0 24px 80px rgba(0,0,0,0.5),
    0 0 40px rgba(124,111,255,0.1),
    0 0 0 1px rgba(124,111,255,0.05);
  transform: translateY(-3px);
}

/* Subtle shine overlay on card hover */
.card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 20%, rgba(255,255,255,0.03) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
  z-index: 0;
}

.card:hover::before {
  opacity: 1;
}

/* Ensure card content is above shine */
.card > * {
  position: relative;
  z-index: 1;
}

/* ─── Tool UI ─── */
.tool-ui {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ─── Form Elements ─── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  font-family: 'DM Sans', sans-serif;
  letter-spacing: 0.3px;
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
input[type="url"],
input[type="search"],
input[type="date"],
input[type="time"],
input[type="color"],
textarea,
select {
  width: 100%;
  padding: 14px 18px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.92rem;
  background: rgba(255,255,255,0.04);
  border: 1.5px solid var(--glass-border);
  border-radius: var(--card-radius-sm);
  color: var(--text-primary);
  outline: none;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  backdrop-filter: blur(10px);
}

input:hover,
textarea:hover,
select:hover {
  border-color: rgba(124,111,255,0.25);
  background: rgba(255,255,255,0.06);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--accent-violet);
  background: rgba(124,111,255,0.06);
  box-shadow: 0 0 0 4px rgba(124,111,255,0.12), 0 0 30px rgba(124,111,255,0.08);
  transform: translateY(-1px);
}

textarea {
  resize: vertical;
  min-height: 100px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
}

select {
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 16px;
  padding-right: 40px;
}

select:hover {
  border-color: var(--glass-border-hover, rgba(255,255,255,0.18));
}

select:focus {
  border-color: var(--accent-violet);
  background: rgba(124, 111, 255, 0.06);
  box-shadow: 0 0 0 4px rgba(124, 111, 255, 0.12), 0 0 30px rgba(124, 111, 255, 0.08);
}

select option {
  background: #1e293b;
  color: #f1f5f9;
}

select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  filter: grayscale(0.5);
}

/* Remove default arrow in IE */
select::-ms-expand {
  display: none;
}

/* ─── Custom File Upload (Premium) ─── */

/* Hide default file input — completely removed from flow */
input[type="file"].file-input-hidden {
  display: none !important;
}

/* File upload zone styles moved to shared/styles/choose-file.css */

/* Upload icon */
.file-upload-icon {
  position: relative;
  z-index: 1;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(59,130,246,0.12), rgba(139,92,246,0.12));
  border: 1px solid rgba(59, 130, 246, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-violet, #7c6fff);
  transition: all 0.35s ease;
  flex-shrink: 0;
}

.file-upload-zone:hover .file-upload-icon {
  transform: scale(1.08) rotate(-4deg);
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.15);
}

.file-upload-zone.drag-over .file-upload-icon {
  transform: scale(1.1) rotate(-4deg);
  border-color: var(--accent-violet, #7c6fff);
  box-shadow: 0 0 25px rgba(124, 111, 255, 0.2);
  color: var(--accent-violet, #7c6fff);
}

.file-upload-zone.has-file .file-upload-icon {
  background: linear-gradient(135deg, rgba(34,197,94,0.12), rgba(34,197,94,0.08));
  border-color: rgba(34, 197, 94, 0.25);
  color: #22c55e;
}

/* Upload text */
.file-upload-text {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.file-upload-title {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary, #eeeeff);
  letter-spacing: 0.2px;
}

.file-upload-hint {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.78rem;
  color: var(--text-muted, #6b6b8a);
  font-weight: 400;
}

.file-upload-hint strong {
  color: var(--accent-violet, #7c6fff);
  font-weight: 600;
}

/* File info display */
.file-upload-info {
  position: relative;
  z-index: 1;
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  margin-top: 4px;
  max-width: 100%;
  animation: fileInfoSlideIn 0.35s ease-out;
}

.file-upload-zone.has-file .file-upload-info {
  display: flex;
}

.file-upload-info-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: rgba(34, 197, 94, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #22c55e;
}

.file-upload-info-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--text-primary, #eeeeff);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 180px;
  font-weight: 500;
}

.file-upload-info-size {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.7rem;
  color: var(--text-muted, #6b6b8a);
  white-space: nowrap;
  flex-shrink: 0;
}

.file-upload-remove {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: none;
  background: rgba(255, 107, 107, 0.1);
  color: #ff6b6b;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  padding: 0;
  margin-left: auto;
}

.file-upload-remove:hover {
  background: rgba(255, 107, 107, 0.2);
  transform: scale(1.1);
}

/* Multiple files indicator */
.file-upload-count {
  position: relative;
  z-index: 1;
  display: none;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: 20px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-violet, #7c6fff);
  animation: fileInfoSlideIn 0.35s ease-out;
}

.file-upload-zone.has-file.multi-file .file-upload-count {
  display: flex;
}

.file-upload-zone.has-file.multi-file .file-upload-info {
  display: none;
}

/* Animation */
@keyframes fileInfoSlideIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Responsive File Upload ─── */
@media (max-width: 768px) {
  .file-upload-zone {
    padding: 24px 16px;
  }

  .file-upload-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
  }

  .file-upload-title {
    font-size: 0.85rem;
  }

  .file-upload-hint {
    font-size: 0.72rem;
  }

  .file-upload-info-name {
    max-width: 120px;
    font-size: 0.72rem;
  }
}

@media (max-width: 540px) {
  .file-upload-zone {
    padding: 20px 14px;
    border-radius: 14px;
  }

  .file-upload-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
  }

  .file-upload-title {
    font-size: 0.8rem;
  }

  .file-upload-hint {
    font-size: 0.68rem;
  }

  .file-upload-info {
    flex-wrap: wrap;
    justify-content: center;
  }

  .file-upload-info-name {
    max-width: 100px;
  }
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent-violet);
  height: 6px;
  border-radius: 3px;
  background: rgba(255,255,255,0.08);
}

input[type="checkbox"],
input[type="radio"] {
  accent-color: var(--accent-violet);
  margin-right: 6px;
}

.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-primary);
  cursor: pointer;
}

/* ─── Buttons (Premium) ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-violet), var(--accent-cyan));
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  text-decoration: none;
  min-height: 48px;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(124,111,255,0.3);
}

/* Subtle shine on buttons */
.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left 0.6s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  box-shadow: 0 8px 30px rgba(124,111,255,0.45);
  transform: translateY(-3px);
}

.btn:active {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(124,111,255,0.3);
}

.btn-secondary {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  box-shadow: none;
}

.btn-secondary:hover {
  background: rgba(124,111,255,0.12);
  border-color: var(--accent-violet);
  color: var(--text-primary);
  box-shadow: 0 4px 16px rgba(124,111,255,0.15);
}

.btn-danger {
  background: linear-gradient(135deg, var(--accent-coral), #ff4444);
  box-shadow: 0 4px 20px rgba(255,107,107,0.3);
}

.btn-danger:hover {
  box-shadow: 0 8px 30px rgba(255,107,107,0.45);
}

.btn-success {
  background: linear-gradient(135deg, var(--accent-green), #00cc88);
  box-shadow: 0 4px 20px rgba(0,255,170,0.3);
}

.btn-success:hover {
  box-shadow: 0 8px 30px rgba(0,255,170,0.45);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.82rem;
  min-height: 40px;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.05rem;
  min-height: 54px;
}

/* ─── Result Values ─── */
.result-value {
  padding: 12px 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius-sm);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--accent-cyan);
  word-break: break-all;
  line-height: 1.5;
}

.result-box {
  padding: 20px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius-sm);
  text-align: center;
}

/* ─── Code Output ─── */
.code-output {
  width: 100%;
  padding: 14px 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius-sm);
  color: var(--accent-green);
  resize: vertical;
  min-height: 80px;
  line-height: 1.6;
}

.code-output:focus {
  border-color: var(--accent-violet);
  box-shadow: 0 0 0 4px rgba(124,111,255,0.12);
}

/* ─── Preview Box ─── */
.preview-box {
  border-radius: var(--card-radius-sm);
  border: 1px solid var(--glass-border);
  overflow: hidden;
  transition: all 0.3s ease;
}

/* ─── Tab Buttons ─── */
.tab-btn {
  padding: 8px 18px;
  border-radius: 50px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
  backdrop-filter: blur(8px);
  min-height: 40px;
}

.tab-btn:hover {
  color: var(--text-primary);
  border-color: rgba(124,111,255,0.4);
  background: rgba(124,111,255,0.08);
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--accent-violet), var(--accent-cyan));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 20px rgba(124,111,255,0.35);
}

/* ─── Unit Toggle ─── */
.unit-toggle {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

/* ─── Tool Actions (Share/Save) ─── */
.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
  justify-content: flex-start;
}

/* ─── SEO Sections ─── */
.seo-section {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--glass-border);
}

.seo-section h2 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.4rem;
  margin-bottom: 16px;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.seo-section p,
.seo-section li {
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--text-muted);
}

.seo-section ol,
.seo-section ul {
  padding-left: 20px;
}

.seo-section li {
  margin-bottom: 8px;
}

/* ─── How-to List ─── */
.how-to-list li {
  padding: 4px 0;
}

/* ─── Features List ─── */
.features-list {
  list-style: none;
  padding: 0 !important;
}

.features-list li {
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ─── Tool Tags ─── */
.tool-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tool-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 50px;
  font-weight: 500;
  background: rgba(124,111,255,0.08);
  color: var(--accent-violet);
  border: 1px solid rgba(124,111,255,0.15);
}

/* ─── FAQ ─── */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius-sm);
  padding: 18px 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.faq-item:hover {
  border-color: rgba(124,111,255,0.3);
  background: rgba(124,111,255,0.05);
}

.faq-item summary {
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-primary);
  cursor: pointer;
  outline: none;
  letter-spacing: -0.2px;
}

.faq-item summary::-webkit-details-marker {
  color: var(--accent-violet);
}

.faq-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 12px;
  line-height: 1.7;
  padding-right: 20px;
}

/* ─── Related Tools ─── */
.related-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.related-tool-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius-sm);
  padding: 16px;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: all 0.3s ease;
  min-height: 44px;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.related-tool-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--card-radius-sm);
  padding: 1px;
  background: linear-gradient(135deg, var(--accent-violet), var(--accent-cyan));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.related-tool-card:hover::after {
  opacity: 1;
}

.related-tool-card:hover {
  border-color: var(--glass-border-hover);
  background: var(--glass-bg-hover);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.related-tool-card .tool-icon {
  font-size: 1.5rem;
}

.related-tool-card .tool-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  font-family: 'Syne', sans-serif;
  letter-spacing: -0.3px;
}

/* ─── Calculator Display ─── */
.calc-display {
  width: 100%;
  padding: 20px 24px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 2rem;
  font-weight: 500;
  text-align: right;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius-sm);
  color: var(--text-primary);
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  overflow: hidden;
}

/* ─── Calculator Details ─── */
.calc-details {
  margin-top: 16px;
  padding: 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius);
  backdrop-filter: blur(10px);
}

.calc-details-inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.calc-detail-section {
  padding: 12px 16px;
  background: rgba(255,255,255,0.03);
  border-radius: var(--card-radius-sm);
  border-left: 3px solid var(--accent-violet);
}

.calc-detail-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-violet);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  font-family: 'JetBrains Mono', monospace;
}

.calc-detail-value {
  font-size: 0.88rem;
  color: var(--text-primary);
  line-height: 1.6;
  word-break: break-word;
}

.calc-formula {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
  padding: 10px 14px;
  background: rgba(0,0,0,0.2);
  border-radius: 8px;
  border: 1px solid var(--glass-border);
  color: var(--accent-cyan);
}

/* ─── Calculator History ─── */
.calc-history-panel {
  margin-top: 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius);
  overflow: hidden;
  max-height: 400px;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(10px);
}

.calc-history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--glass-border);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  flex-shrink: 0;
  font-family: 'Syne', sans-serif;
}

.calc-history-clear-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.85rem;
  padding: 4px 10px;
  border-radius: 6px;
  opacity: 0.6;
  transition: opacity 0.2s;
  color: var(--text-muted);
  line-height: 1;
}

.calc-history-clear-btn:hover {
  opacity: 1;
  background: rgba(255,107,107,0.1);
  color: var(--accent-coral);
}

.calc-history-empty {
  padding: 24px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.calc-history-list {
  overflow-y: auto;
  padding: 10px;
  flex: 1;
}

.calc-history-item {
  position: relative;
  padding: 12px 14px;
  padding-right: 36px;
  background: rgba(255,255,255,0.03);
  border-radius: var(--card-radius-sm);
  margin-bottom: 8px;
  border: 1px solid var(--glass-border);
  transition: border-color 0.2s;
}

.calc-history-item:hover {
  border-color: var(--accent-violet);
}

.calc-history-item-time {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-bottom: 4px;
  font-family: 'JetBrains Mono', monospace;
}

.calc-history-item-formula {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 2px;
}

.calc-history-item-inputs {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.calc-history-item-result {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--accent-cyan);
  font-family: 'JetBrains Mono', monospace;
}

.calc-history-item-delete {
  position: absolute;
  top: 8px;
  right: 8px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--accent-coral);
  font-size: 1rem;
  padding: 2px 6px;
  border-radius: 4px;
  opacity: 0.4;
  transition: opacity 0.2s;
  line-height: 1;
}

.calc-history-item-delete:hover {
  opacity: 1;
}

/* ─── Age Calculator Specific ─── */
.age-big {
  font-family: 'Syne', sans-serif;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent-cyan);
  letter-spacing: -1px;
}

.age-big span {
  color: var(--accent-violet);
}

.age-detail {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 8px;
  line-height: 1.6;
}

/* ─── BMI Calculator Specific ─── */
.bmi-value {
  font-family: 'Syne', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent-cyan);
  letter-spacing: -1px;
}

.bmi-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 400;
  display: block;
}

.bmi-category {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-green);
  margin: 8px 0;
}

.bmi-bar {
  width: 100%;
  height: 8px;
  background: rgba(255,255,255,0.08);
  border-radius: 4px;
  overflow: hidden;
  margin: 12px 0;
}

.bmi-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-green), var(--accent-yellow), var(--accent-coral));
  border-radius: 4px;
  transition: width 0.5s ease;
}

.bmi-scale {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
}

/* ─── Password Display ─── */
.password-display {
  display: flex;
  gap: 8px;
  align-items: center;
}

.password-display input {
  flex: 1;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  padding: 14px 18px;
}

/* ─── Toast Notification ─── */
#toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  padding: 14px 28px;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 500;
  backdrop-filter: blur(20px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  z-index: 9999;
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
  pointer-events: none;
  white-space: nowrap;
}

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

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: rgba(124,111,255,0.3);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(124,111,255,0.5);
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .tool-container {
    padding: 24px 16px 60px;
  }

  .card {
    padding: 24px;
    border-radius: 18px;
  }

  .tool-title {
    font-size: 1.5rem;
  }

  .tool-description {
    font-size: 0.9rem;
  }

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

  .calc-display {
    font-size: 1.5rem;
    padding: 16px 20px;
    min-height: 60px;
  }

  .age-big {
    font-size: 1.3rem;
  }

  .bmi-value {
    font-size: 2rem;
  }
}

@media (max-width: 540px) {
  .tool-container {
    padding: 18px 12px 50px;
  }

  .card {
    padding: 18px;
    border-radius: 16px;
  }

  .tool-title {
    font-size: 1.3rem;
  }

  .tool-description {
    font-size: 0.85rem;
  }

  .related-tools-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .related-tool-card {
    padding: 12px;
  }

  .calc-display {
    font-size: 1.3rem;
    padding: 14px 16px;
    min-height: 50px;
  }

  .age-big {
    font-size: 1.1rem;
  }

  .bmi-value {
    font-size: 1.6rem;
  }

  .bmi-scale {
    font-size: 0.6rem;
  }

  .tool-tag {
    font-size: 0.65rem;
    padding: 4px 10px;
  }

  .faq-item {
    padding: 14px 16px;
  }

  .faq-item summary {
    font-size: 0.85rem;
  }

  .seo-section h2 {
    font-size: 1.15rem;
  }

  .seo-section {
    margin-top: 32px;
    padding-top: 24px;
  }

  .btn {
    padding: 12px 22px;
    font-size: 0.85rem;
    min-height: 44px;
  }

  .btn-lg {
    padding: 14px 26px;
    font-size: 0.95rem;
    min-height: 48px;
  }
}

/* ─── Animations ─── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

/* ─── Utility ─── */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }
.w-full { width: 100%; }