:root {
  --bg-dark: #121212;
  --text-light: #e0e0e0;
  --primary-blue: #00bfff;
  --primary-blue-hover: #0099cc;
  --panel-bg: #1e1e1e;
  --accent: #d6336c;
  --shadow: rgba(0, 0, 0, 0.3);
  --linkedin-blue: #0077b5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-height: 100vh;
  padding: 20px;
}

header, footer {
  text-align: center;
  padding: 16px 20px;
}

h1 {
  margin: 0 0 12px;
  color: var(--primary-blue);
  font-size: 32px;
}

main {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 20px 28px;
}

.controls {
  background: var(--panel-bg);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 6px 20px var(--shadow);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: center;
}

label {
  font-weight: 600;
}

input[type="date"], input[type="text"] {
  padding: 8px 10px;
  border: 1px solid #333;
  border-radius: 8px;
  background-color: #2c2c2c;
  color: var(--text-light);
  min-width: 220px;
}

button {
  padding: 10px 16px;
  background: var(--primary-blue);
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
}

button:hover {
  background-color: var(--primary-blue-hover);
}

.panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.panel {
  background: var(--panel-bg);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 6px 20px var(--shadow);
}

.panel h2 {
  margin-top: 0;
  color: var(--primary-blue);
}

.placeholder {
  color: #999;
  font-style: italic;
}

.highlight {
  border: 3px solid var(--accent);
}

.result-list {
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
}

.result-list li {
  padding: 6px 0;
  border-bottom: 1px dashed #444;
}

.count-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent);
  margin-top: 8px;
}

footer a {
  color: var(--linkedin-blue);
  text-decoration: none;
  font-weight: bold;
}

footer a:hover {
  text-decoration: underline;
}

footer i {
  margin-right: 6px;
  font-size: 18px;
  vertical-align: middle;
}

/* Responsive Design */
@media (max-width: 900px) {
  .panels {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  body {
    padding: 10px;
  }

  input, button {
    width: 100%;
    font-size: 14px;
  }

  h1 {
    font-size: 24px;
    text-align: center;
  }
}