/* ============================================
   SnapToolbox - Global Utility Tools
   Shared Stylesheet
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  --color-primary: #4F46E5;
  --color-primary-dark: #4338CA;
  --color-primary-light: #818CF8;
  --color-secondary: #10B981;
  --color-bg: #F9FAFB;
  --color-surface: #FFFFFF;
  --color-text: #1F2937;
  --color-text-secondary: #6B7280;
  --color-border: #E5E7EB;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --max-width: 1200px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

/* --- Header / Navigation --- */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo:hover { text-decoration: none; }
.logo svg { width: 32px; height: 32px; }
.nav-links { display: flex; gap: 1.5rem; align-items: center; }
.nav-links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--color-primary); text-decoration: none; }

/* Mobile hamburger */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; }
.nav-toggle svg { width: 24px; height: 24px; color: var(--color-text); }

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
}

/* --- Main Content --- */
main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  width: 100%;
}

/* --- Hero Section --- */
.hero {
  text-align: center;
  padding: 3rem 0;
}
.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}
@media (max-width: 768px) {
  .hero h1 { font-size: 1.8rem; }
  .hero p { font-size: 1rem; }
}

/* --- Search Bar --- */
.search-container {
  max-width: 500px;
  margin: 2rem auto;
  position: relative;
}
.search-container input {
  width: 100%;
  padding: 0.875rem 1rem 0.875rem 3rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
  background: var(--color-surface);
}
.search-container input:focus { border-color: var(--color-primary); }
.search-container .search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-secondary);
}

/* --- Tool Cards Grid --- */
.category-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 2rem 0 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}
.tool-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
  display: block;
  color: inherit;
}
.tool-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
  color: inherit;
}
.tool-card .tool-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}
.tool-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}
.tool-card p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}
.icon-image { background: #EEF2FF; color: var(--color-primary); }
.icon-text { background: #ECFDF5; color: var(--color-secondary); }
.icon-dev { background: #FEF3C7; color: #D97706; }
.icon-calc { background: #FEE2E2; color: #DC2626; }

/* --- Tool Page Layout --- */
.tool-page { max-width: 800px; margin: 0 auto; }
.tool-header {
  text-align: center;
  margin-bottom: 2rem;
}
.tool-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.tool-header p {
  color: var(--color-text-secondary);
}
.tool-container {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

/* --- Form Elements --- */
.input-group { margin-bottom: 1.25rem; }
.input-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}
textarea, input[type="text"], input[type="number"], input[type="url"], select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
  background: var(--color-bg);
}
textarea:focus, input[type="text"]:focus, select:focus {
  border-color: var(--color-primary);
}
textarea { resize: vertical; min-height: 120px; font-family: 'Fira Code', monospace, inherit; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: var(--color-primary);
  color: white;
}
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}
.btn-secondary:hover { background: var(--color-border); }
.btn-group { display: flex; gap: 0.75rem; flex-wrap: wrap; }

.output-area {
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  min-height: 80px;
  font-family: 'Fira Code', monospace, inherit;
  font-size: 0.9rem;
  white-space: pre-wrap;
  word-break: break-all;
}

/* --- Stats/Info Bar --- */
.stats-bar {
  display: flex;
  gap: 1.5rem;
  padding: 0.75rem 0;
  flex-wrap: wrap;
}
.stat-item {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}
.stat-item strong {
  color: var(--color-text);
}

/* --- Ad Placeholder --- */
.ad-slot {
  background: var(--color-bg);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  text-align: center;
  margin: 1.5rem 0;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: 0.8rem;
}

/* --- Footer --- */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  margin-bottom: 0.75rem;
}
.footer-col a {
  display: block;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  padding: 0.25rem 0;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--color-primary); text-decoration: none; }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

/* --- Cookie Consent Banner --- */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 12px rgba(0,0,0,0.1);
  padding: 1.25rem 1.5rem;
  z-index: 9999;
  display: none;
}
.cookie-banner.show { display: block; }
.cookie-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.cookie-inner p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  flex: 1;
  min-width: 200px;
}
.cookie-inner p a { text-decoration: underline; }
.cookie-buttons { display: flex; gap: 0.75rem; flex-shrink: 0; }
.cookie-buttons .btn { font-size: 0.85rem; padding: 0.5rem 1.25rem; }

/* --- Legal Pages --- */
.legal-page {
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
}
.legal-page h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}
.legal-page .last-updated {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}
.legal-page h2 {
  font-size: 1.25rem;
  margin: 2rem 0 0.75rem;
}
.legal-page p, .legal-page li {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.75rem;
}
.legal-page ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

/* --- Breadcrumb --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--color-text-secondary); }
.breadcrumb a:hover { color: var(--color-primary); }

/* --- Drag & Drop Zone --- */
.drop-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  text-align: center;
  transition: border-color 0.2s, background 0.2s;
  cursor: pointer;
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--color-primary);
  background: #EEF2FF;
}
.drop-zone p { color: var(--color-text-secondary); margin-top: 0.5rem; font-size: 0.9rem; }

/* --- Range Slider --- */
input[type="range"] {
  width: 100%;
  height: 6px;
  appearance: none;
  background: var(--color-border);
  border-radius: 3px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
}

/* --- Progress Bar --- */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  margin: 1rem 0;
}
.progress-bar .progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 4px;
  transition: width 0.3s;
}

/* --- Utility --- */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }
.gap-1 { gap: 0.5rem; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }

/* --- Color Picker specific --- */
.color-preview {
  width: 100%;
  height: 120px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  margin-bottom: 1rem;
}
.color-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.color-value-item {
  background: var(--color-bg);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  font-family: 'Fira Code', monospace;
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.color-value-item .copy-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-primary);
  font-size: 0.8rem;
  padding: 0.25rem 0.5rem;
}

/* --- Notification Toast --- */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--color-text);
  color: white;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  z-index: 10000;
  transform: translateY(100px);
  opacity: 0;
  transition: transform 0.3s, opacity 0.3s;
}
.toast.show {
  transform: translateY(0);
  opacity: 1;
}