/* --- Root Variables & Reset --- */
:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --bg: #f3f4f6;
  --card-bg: #ffffff;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --success: #10b981;
  --error: #ef4444;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg);
  color: var(--text-main);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

/* --- Container & Card --- */
.container {
  background: var(--card-bg);
  width: 100%;
  max-width: 500px;
  padding: 2.5rem;
  border-radius: 16px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}

h1 {
  font-size: 1.75rem;
  text-align: center;
  margin-bottom: 2rem;
  color: var(--primary);
  border-bottom: 2px solid var(--bg);
  padding-bottom: 1rem;
}

h2 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.status-box, .search-box {
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: #fafafa;
  border-radius: 12px;
  border: 1px solid #eee;
}

/* --- Form Elements --- */
input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  margin-bottom: 1rem;
  font-size: 1rem;
  transition: border-color 0.2s;
}

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

button, input[type="submit"] {
  width: 100%;
  padding: 0.75rem;
  background-color: var(--primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

button:hover, input[type="submit"]:hover {
  background-color: var(--primary-hover);
}

/* --- Status & Results --- */
#initStatus, #result {
  margin-top: 1rem;
  padding: 0.75rem;
  border-radius: 6px;
  font-size: 0.9rem;
  display: none;
  text-align: center;
}

.success {
  background-color: #ecfdf5;
  color: var(--success);
  border: 1px solid var(--success);
}

.error {
  background-color: #fef2f2;
  color: var(--error);
  border: 1px solid var(--error);
}