* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #232734;
  --border: #2d3245;
  --text: #e4e6f0;
  --text2: #9499b3;
  --primary: #6c5ce7;
  --primary-hover: #7f72ed;
  --accent: #00cec9;
  --success: #00b894;
  --warning: #fdcb6e;
  --danger: #ff7675;
  --radius: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }

/* Header */
.header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
}

.logo span { color: var(--primary); }

.nav { display: flex; gap: 24px; }
.nav a { color: var(--text2); font-size: 14px; font-weight: 500; }
.nav a:hover { color: var(--text); }

/* Hero */
.hero {
  text-align: center;
  padding: 60px 20px 40px;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 18px;
  color: var(--text2);
  max-width: 600px;
  margin: 0 auto;
}

/* Tool Grid */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.section-subtitle {
  color: var(--text2);
  margin-bottom: 24px;
  font-size: 14px;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all 0.2s;
  cursor: pointer;
  display: block;
  color: var(--text);
}

.tool-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(108, 92, 231, 0.15);
}

.tool-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 14px;
}

.tool-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.tool-card p { font-size: 13px; color: var(--text2); line-height: 1.5; }

.badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 20px;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-free { background: rgba(0, 184, 148, 0.15); color: var(--success); }
.badge-new { background: rgba(108, 92, 231, 0.15); color: var(--primary); }

/* Tool Page Layout */
.tool-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px;
}

.tool-page h1 { font-size: 32px; margin-bottom: 8px; }
.tool-page .description { color: var(--text2); margin-bottom: 32px; font-size: 15px; }

.tool-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 24px;
}

/* Form Elements */
label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text2);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

input[type="text"], input[type="number"], input[type="email"], input[type="url"],
input[type="color"], select, textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  margin-bottom: 16px;
  transition: border-color 0.2s;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
}

textarea { min-height: 120px; resize: vertical; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover { background: var(--primary-hover); }

.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover { border-color: var(--primary); }

.btn-group { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }

/* Result area */
.result {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-top: 20px;
  display: none;
}

.result.show { display: block; }

.result pre {
  white-space: pre-wrap;
  word-break: break-word;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 13px;
  line-height: 1.6;
}

.result img { max-width: 100%; border-radius: 8px; }

/* File drop zone */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 16px;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--primary);
  background: rgba(108, 92, 231, 0.05);
}

.dropzone p { color: var(--text2); font-size: 14px; }
.dropzone .icon { font-size: 36px; margin-bottom: 12px; }

/* Grid helpers */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

/* Loading */
.loading { opacity: 0.6; pointer-events: none; }
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Footer */
.footer {
  text-align: center;
  padding: 40px 20px;
  color: var(--text2);
  font-size: 13px;
  border-top: 1px solid var(--border);
  margin-top: 60px;
}

/* Ad placeholder */
.ad-space {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  text-align: center;
  color: var(--text2);
  font-size: 12px;
  margin: 24px 0;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 28px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .nav { display: none; }
  .tool-grid { grid-template-columns: 1fr; }
}