/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Montserrat', sans-serif;
  background: #121212;
  color: #e0e0e0;
}

/* Header */
header {
  position: sticky;
  top: 0;
  background: rgba(18,18,18,0.95);
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #333;
  z-index: 100;
}

header .logo h1 {
  font-size: 1.8em;
  color: #fff;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  align-items: center;
}

nav a {
  color: #e0e0e0;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

nav a:hover {
  color: #28b348;
}

nav select {
  padding: 5px;
  font-size: 16px;
  background: #333;
  color: #fff;
  border: none;
}

/* Hero Section */
#hero {
  text-align: center;
  padding: 100px 20px;
  background: linear-gradient(135deg, #28b348, #34c759);
  background-attachment: fixed;
}

.hero-content h2 {
  font-size: 3em;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.hero-content p {
  font-size: 1.3em;
  margin-bottom: 30px;
  max-width: 600px;
  margin: 0 auto;
}

/* About Section */
#about {
  padding: 70px 20px;
  text-align: center;
  background: #1e1e1e;
  margin: 30px 0;
  border-radius: 10px;
}

#about h2 {
  font-size: 2.5em;
  margin-bottom: 20px;
  color: #28b348;
}

#about p {
  font-size: 1.1em;
  max-width: 800px;
  margin: 0 auto;
  color: #ccc;
}

/* Algorithms Section */
main {
  padding: 70px 20px;
}

section h2 {
  font-size: 2.5em;
  margin-bottom: 20px;
  text-align: center;
}

.algorithm-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  justify-content: center;
}

.algorithm-card {
  background: #1e1e1e;
  border: 2px solid #28b348;
  border-radius: 10px;
  padding: 20px;
  width: 300px;
  text-align: center;
  transition: transform 0.3s ease;
}

.algorithm-card h3 {
  margin-bottom: 10px;
  color: #28b348;
}

.algorithm-card p {
  font-size: 0.95em;
  margin-bottom: 15px;
  color: #ccc;
}

.btn-run {
  padding: 10px 20px;
  background: #28b348;
  border: none;
  border-radius: 5px;
  color: #fff;
  cursor: pointer;
  transition: background 0.3s;
}

.btn-run:hover {
  background: #34c759;
}

/* Visualization Area */
#visualization-area {
  border: 2px dashed #28b348;
  border-radius: 10px;
  height: 300px;
  padding: 20px;
  margin: 0 auto 20px auto;
  max-width: 800px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* Stil pentru barele din simulare */
#visualization-area div.bar {
  display: inline-block;
  margin: 1px;
  background: #28b348;
}

/* Code Area */
#code-area {
  max-width: 800px;
  margin: 20px auto;
  text-align: left;
  background: #1e1e1e;
  border: 1px solid #28b348;
  border-radius: 5px;
  padding: 10px;
}

#code-lang-buttons {
  text-align: right;
  margin-bottom: 10px;
}

.code-lang-btn {
  padding: 5px 10px;
  margin-left: 5px;
  background: #28b348;
  border: none;
  border-radius: 3px;
  color: #fff;
  cursor: pointer;
  transition: background 0.3s;
}

.code-lang-btn:hover {
  background: #34c759;
}

pre {
  background: #1e1e1e;
  color: #e0e0e0;
  padding: 10px;
  overflow-x: auto;
  white-space: pre-wrap;
  border-radius: 5px;
  font-family: Consolas, monospace;
}

/* Footer */
footer {
  background: #1f1f1f;
  text-align: center;
  padding: 20px;
  color: #aaa;
  margin-top: 50px;
}

/* Responsive */
@media (max-width: 768px) {
  header {
    flex-direction: column;
  }
  nav ul {
    flex-direction: column;
    gap: 10px;
  }
  .algorithm-cards {
    flex-direction: column;
    align-items: center;
  }
}

#simulation-result {
  margin-top: 10px;
  text-align: center;
  font-size: 1.2em;
  color: #28b348;
}

.bar {
  transition: left 0.2s ease, height 0.2s ease;
}