:root {
  --primary-color: #2c3e50;
  --accent-color: #3498db;
  --bg-color: #f4f7f6;
  --card-bg: #ffffff;
  --text-main: #333333;
  --text-muted: #7f8c8d;
  --border-color: #e0e0e0;
  --success-color: #27ae60;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Noto Sans KR', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background-color: var(--primary-color);
  color: white;
  padding: 40px 0;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: 2.5rem;
  font-weight: 700;
}

header p {
  margin: 10px 0 0;
  opacity: 0.8;
}

/* Filter Bar */
.filter-bar {
  background: white;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.filter-bar .container {
  display: flex;
  gap: 20px;
  align-items: center;
}

.search-box {
  flex-grow: 1;
}

.search-box input {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.3s;
}

.search-box input:focus {
  border-color: var(--accent-color);
}

.filter-group select {
  padding: 12px 15px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: white;
  font-size: 1rem;
  cursor: pointer;
}

/* Job Grid */
.job-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin-top: 30px;
  margin-bottom: 50px;
}

.job-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
  transition: transform 0.2s, box-shadow 0.2s;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.job-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

.job-card .hospital {
  font-size: 0.9rem;
  color: var(--accent-color);
  font-weight: 500;
  margin-bottom: 8px;
}

.job-card h3 {
  margin: 0 0 12px;
  font-size: 1.25rem;
  color: var(--primary-color);
}

.job-card .info-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.job-card .label {
  color: var(--text-muted);
}

.job-card .value {
  font-weight: 500;
}

.job-card .footer {
  margin-top: auto;
  padding-top: 15px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-detail {
  display: inline-block;
  background-color: var(--accent-color);
  color: white;
  padding: 8px 16px;
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.9rem;
  transition: background-color 0.2s;
}

.btn-detail:hover {
  background-color: #2980b9;
}

.deadline {
  font-size: 0.85rem;
  color: #e74c3c;
  font-weight: 500;
}

/* Status Messages */
.status-msg {
  text-align: center;
  padding: 50px;
  font-size: 1.2rem;
  color: var(--text-muted);
}

.hidden {
  display: none;
}

/* Footer */
footer {
  background: var(--primary-color);
  color: white;
  padding: 30px 0;
  text-align: center;
  margin-top: auto;
}

@media (max-width: 600px) {
  .filter-bar .container {
    flex-direction: column;
    align-items: stretch;
  }
}