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

body {
  font-family:
    system-ui,
    -apple-system,
    sans-serif;
  background: #f5f5f5;
  color: #222;
  min-height: 100vh;
}

/* Nav */
header {
  background: #1a1a2e;
  padding: 0 1.5rem;
}
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
}
.brand {
  color: #e0e0ff;
  font-weight: 700;
  text-decoration: none;
  font-size: 1.1rem;
}
.nav-links a {
  color: #c0c0dd;
  text-decoration: none;
  margin-left: 1.25rem;
  font-size: 0.9rem;
}
.nav-links a:hover {
  color: #fff;
}

/* Main */
main {
  max-width: 640px;
  margin: 2rem auto;
  padding: 0 1rem;
}

/* Alerts */
.alert {
  padding: 0.75rem 1rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}
.alert-success {
  background: #d4edda;
  color: #155724;
}
.alert-error {
  background: #f8d7da;
  color: #721c24;
}

/* Card */
.card {
  background: #fff;
  border-radius: 10px;
  padding: 2rem;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}
.card h1 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

/* Forms */
form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  margin-top: 1rem;
}
form input,
form select,
form textarea {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
}
form input:focus,
form select:focus,
form textarea:focus {
  outline: none;
  border-color: #5c6bc0;
  box-shadow: 0 0 0 2px rgba(92, 107, 192, 0.2);
}
button[type="submit"],
.btn {
  display: inline-block;
  margin-top: 1.25rem;
  padding: 0.6rem 1.4rem;
  background: #5c6bc0;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
}
button[type="submit"]:hover,
.btn:hover {
  background: #3f51b5;
}

/* Result */
.result {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid #eee;
}
.result h2 {
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}
pre {
  background: #f0f0f0;
  padding: 1rem;
  border-radius: 6px;
  white-space: pre-wrap;
  word-break: break-word;
}
.generated-image {
  max-width: 100%;
  border-radius: 8px;
  margin-top: 0.5rem;
}
.generated-video {
  max-width: 100%;
  border-radius: 8px;
  margin-top: 0.5rem;
}