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

:root {
  --bg: #eef2f7;
  --card: #ffffff;
  --text: #20242a;
  --subtext: #7a828c;
  --border: #dce2e9;
  --input-bg: #f8fafc;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --job-text: #555e69;
  --shadow: 0 10px 28px rgba(30, 45, 65, 0.12);
  --job-shadow: 0 6px 18px rgba(30, 45, 65, 0.09);
}

body.dark {
  --bg: #151a21;
  --card: #20262e;
  --text: #f1f4f7;
  --subtext: #929ba6;
  --border: #39424d;
  --input-bg: #181d24;
  --primary: #4f8cff;
  --primary-dark: #3977e8;
  --job-text: #c3cad2;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  --job-shadow: 0 7px 20px rgba(0, 0, 0, 0.28);
}

html {
  background: var(--bg);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans KR", sans-serif;
  background: var(--bg);
  color: var(--text);
  padding: 16px;
  line-height: 1.5;
  transition: background 0.25s ease, color 0.25s ease;
}

.container {
  max-width: 720px;
  margin: 0 auto;
}

.main-card {
  background: var(--card);
  border-radius: 20px;
  padding: 22px;
  box-shadow:
    0 14px 35px rgba(30, 45, 65, 0.12),
    0 3px 8px rgba(30, 45, 65, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.45);
  transition: background 0.25s ease, box-shadow 0.25s ease;
}

body.dark .main-card {
  border-color: #303943;
}

.top-area {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  margin-bottom: 20px;
}

h1 {
  text-align: center;
  font-size: 1.55rem;
  font-weight: 750;
  letter-spacing: -0.5px;
  margin-bottom: 2px;
}

.subtitle {
  text-align: center;
  font-size: 0.7rem;
  font-weight: 300;
  color: var(--subtext);
}

.theme-toggle {
  position: absolute;
  right: 0;
  top: 0;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 17px;
  cursor: pointer;
  box-shadow:
    0 4px 9px rgba(30, 45, 65, 0.10),
    inset 0 1px 1px rgba(255, 255, 255, 0.6);
  transition: all 0.2s ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
  box-shadow:
    0 6px 13px rgba(30, 45, 65, 0.15),
    inset 0 1px 1px rgba(255, 255, 255, 0.6);
}

.search-box {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
}

.search-box input {
  flex: 1;
  min-width: 0;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 15px;
  box-shadow:
    inset 0 2px 5px rgba(30, 45, 65, 0.06),
    0 1px 2px rgba(30, 45, 65, 0.04);
  outline: none;
}

.search-box input::placeholder {
  color: #9aa2ac;
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow:
    0 0 0 3px rgba(37, 99, 235, 0.10),
    inset 0 2px 5px rgba(30, 45, 65, 0.05);
}

.search-box button {
  flex-shrink: 0;
  padding: 10px 19px;
  background: linear-gradient(145deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  border-radius: 11px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  box-shadow:
    0 5px 10px rgba(37, 99, 235, 0.25),
    inset 0 1px 1px rgba(255, 255, 255, 0.25);
  transition: all 0.18s ease;
}

.search-box button:hover {
  transform: translateY(-1px);
  box-shadow:
    0 7px 14px rgba(37, 99, 235, 0.30),
    inset 0 1px 1px rgba(255, 255, 255, 0.25);
}

.search-box button:active {
  transform: translateY(1px);
}

.filter-section {
  margin-bottom: 0;
}

.region-row {
  display: flex;
  gap: 10px;
}

.region-field {
  flex: 1;
  min-width: 0;
}

.region-field label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--subtext);
  margin-bottom: 6px;
}

.region-field select {
  width: 100%;
  min-width: 0;
  padding: 10px 11px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 0.88rem;
  cursor: pointer;
  box-shadow:
    inset 0 2px 5px rgba(30, 45, 65, 0.05),
    0 2px 4px rgba(30, 45, 65, 0.05);
  outline: none;
}

.region-field select:focus {
  border-color: var(--primary);
  box-shadow:
    0 0 0 3px rgba(37, 99, 235, 0.10),
    inset 0 2px 5px rgba(30, 45, 65, 0.05);
}

.count {
  text-align: right;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--subtext);
  margin: 16px 3px 9px;
}

.job-card {
  background: var(--card);
  border-radius: 15px;
  padding: 17px;
  margin-bottom: 12px;
  box-shadow:
    0 7px 18px rgba(30, 45, 65, 0.09),
    0 2px 4px rgba(30, 45, 65, 0.06);
  border: 1px solid rgba(220, 226, 233, 0.7);
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    background 0.25s ease;
}

body.dark .job-card {
  border-color: #303943;
}

.job-card:hover {
  transform: translateY(-2px);
  box-shadow:
    0 11px 25px rgba(30, 45, 65, 0.13),
    0 3px 6px rgba(30, 45, 65, 0.07);
}

.job-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 5px;
  letter-spacing: -0.2px;
}

.company {
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 11px;
}

.meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px 12px;
  font-size: 0.86rem;
  color: var(--job-text);
}

.career {
  margin-top: 9px;
  font-size: 0.84rem;
  color: var(--subtext);
}

.loading,
.error,
.empty {
  text-align: center;
  padding: 40px 0;
  color: var(--subtext);
}

.error {
  color: #ef4444;
}

.footer {
  text-align: center;
  font-size: 0.68rem;
  font-weight: 300;
  color: var(--subtext);
  margin-top: 22px;
}

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

  .container {
    max-width: 100%;
  }

  .main-card {
    padding: 17px 14px;
    border-radius: 17px;
  }

  h1 {
    font-size: 1.38rem;
  }

  .theme-toggle {
    width: 35px;
    height: 35px;
    border-radius: 10px;
    font-size: 15px;
  }

  .search-box {
    gap: 6px;
  }

  .search-box input {
    padding: 10px 11px;
    font-size: 14px;
  }

  .search-box button {
    padding: 9px 14px;
    font-size: 14px;
  }

  .region-row {
    gap: 7px;
  }

  .region-field label {
    font-size: 0.74rem;
  }

  .region-field select {
    padding: 9px 8px;
    font-size: 0.81rem;
  }

  .meta {
    grid-template-columns: 1fr;
    font-size: 0.84rem;
  }

  .job-card {
    padding: 14px;
  }
}