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

:root {
  --bg: #f7f8fc;
  --surface: #ffffff;
  --text: #17213a;
  --muted: #68738b;
  --primary: #7055e8;
  --border: #e8eaf2;
}

body {
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background .3s, color .3s;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 8%;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 25px;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
}

.logo span, .hero h1 span {
  color: var(--primary);
}

nav {
  display: flex;
  align-items: center;
  gap: 25px;
}

nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

.theme-btn {
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  padding: 9px 13px;
  border-radius: 10px;
  cursor: pointer;
}

.hero {
  text-align: center;
  padding: 95px 20px 85px;
  background: linear-gradient(135deg, #f0edff, #ffffff);
}

.eyebrow {
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
}

.hero h1 {
  font-size: clamp(42px, 7vw, 72px);
  line-height: 1.12;
  margin: 20px 0;
  letter-spacing: -2px;
}

.hero p {
  max-width: 550px;
  margin: 0 auto 28px;
  color: var(--muted);
  font-size: 17px;
}

.primary-btn, button {
  display: inline-block;
  background: var(--primary);
  color: white;
  border: 0;
  border-radius: 10px;
  padding: 12px 20px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: .2s;
}

button:hover, .primary-btn:hover {
  opacity: .85;
  transform: translateY(-2px);
}

.tools-section, .workspace, .about {
  max-width: 1100px;
  margin: 65px auto;
  padding: 0 22px;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 25px;
}

h2 {
  font-size: 30px;
  margin-top: 5px;
}

.free-label {
  background: #e8f8ee;
  color: #18864a;
  padding: 7px 12px;
  border-radius: 30px;
  font-size: 12px;
  font-weight: 800;
}

.search-box, input, textarea {
  width: 100%;
  padding: 14px;
  margin: 12px 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  outline-color: var(--primary);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 22px;
}

.tool-card {
  display: block;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  text-decoration: none;
  color: var(--text);
  transition: .25s;
}

.tool-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: 0 12px 30px #20204012;
}

.tool-icon {
  font-size: 30px;
}

.tool-card h3 {
  margin: 12px 0 5px;
}

.tool-card p, .workspace p, .about p {
  color: var(--muted);
}

.card-link {
  display: inline-block;
  margin-top: 15px;
  color: var(--primary);
  font-weight: 700;
}

.workspace {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
}

.workspace h2 {
  margin-bottom: 8px;
}

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

.stats, .action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 12px;
}

.stats span {
  background: var(--bg);
  padding: 10px 15px;
  border-radius: 8px;
}

.result {
  margin: 15px 0;
  overflow-wrap: anywhere;
}

.about {
  text-align: center;
  padding: 45px 25px;
  background: var(--surface);
  border-radius: 16px;
}

.about p {
  max-width: 650px;
  margin: 12px auto 0;
}

footer {
  text-align: center;
  padding: 30px;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

footer p {
  color: var(--muted);
  margin-top: 8px;
  font-size: 14px;
}

/* Dark mode */
body.dark {
  --bg: #101321;
  --surface: #191e30;
  --text: #f2f3fa;
  --muted: #aab2c7;
  --border: #30364b;
}

body.dark .hero {
  background: linear-gradient(135deg, #211d3b, #151a2b);
}

@media (max-width: 800px) {
  .tool-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .header {
    padding: 16px 5%;
  }
}

@media (max-width: 500px) {
  .tool-grid {
    grid-template-columns: 1fr;
  }
  nav {
    gap: 12px;
  }
  nav a {
    font-size: 13px;
  }
  .hero {
    padding: 65px 18px;
  }
  .section-heading {
    align-items: flex-start;
    gap: 10px;
    flex-direction: column;
  }
}