:root {
  --navy: #0b1f3f;
  --navy-light: #16305c;
  --navy-soft: #eef1f8;
  --white: #ffffff;
  --border: #dde2ee;
  --text: #1a2233;
  --muted: #6b7488;
  --success: #1a7f37;
  --error: #c0392b;
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Segoe UI", sans-serif;
  background: var(--navy-soft);
  margin: 0;
  color: var(--text);
}

.app-header {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: var(--white);
  padding: 28px 24px;
  box-shadow: 0 2px 10px rgba(11, 31, 63, 0.25);
}

.app-header-inner {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
}

.app-logo {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  object-fit: contain;
  background: var(--white);
  border-radius: 50%;
  padding: 3px;
}

.app-header h1 {
  font-size: 20px;
  margin: 0;
  letter-spacing: 0.02em;
}

.app-subtitle {
  margin: 4px 0 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}

.app-nav {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 8px;
  transform: translateY(-1px);
}

.app-nav a {
  padding: 12px 20px;
  font-size: 13px;
  font-weight: bold;
  color: var(--muted);
  text-decoration: none;
  background: var(--white);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: 10px 10px 0 0;
}

.app-nav a.active {
  color: var(--navy);
  background: var(--navy-soft);
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 24px 48px;
  display: grid;
  gap: 20px;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 28px;
  box-shadow: 0 4px 16px rgba(11, 31, 63, 0.06);
}

.card-title {
  font-size: 15px;
  font-weight: bold;
  color: var(--navy);
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--navy);
  display: inline-block;
}

form {
  display: grid;
  gap: 16px;
}

label {
  display: flex;
  flex-direction: column;
  font-size: 13px;
  font-weight: bold;
  color: var(--navy);
  gap: 6px;
}

input,
select {
  padding: 9px 10px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--white);
  color: var(--text);
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(11, 31, 63, 0.12);
}

button {
  padding: 12px;
  font-size: 15px;
  font-weight: bold;
  background: var(--navy);
  color: var(--white);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  letter-spacing: 0.02em;
  transition: background 0.15s;
}

button:hover {
  background: var(--navy-light);
}

#message {
  min-height: 20px;
  font-size: 13px;
  font-weight: bold;
  margin: 12px 0 0;
}

#message.success {
  color: var(--success);
}

#message.error {
  color: var(--error);
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th, td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  text-align: center;
  white-space: nowrap;
}

th {
  background: var(--navy);
  color: var(--white);
  font-weight: normal;
  font-size: 12px;
  letter-spacing: 0.02em;
}

th:first-child {
  border-top-left-radius: 6px;
}

th:last-child {
  border-top-right-radius: 6px;
}

tbody tr:hover {
  background: var(--navy-soft);
}

.delete-btn {
  background: var(--white);
  color: var(--error);
  border: 1px solid var(--error);
  padding: 5px 12px;
  font-size: 12px;
  font-weight: bold;
  border-radius: 5px;
}

.delete-btn:hover {
  background: var(--error);
  color: var(--white);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 14px;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.filter-bar label {
  display: flex;
  flex-direction: column;
  font-size: 12px;
  font-weight: bold;
  color: var(--navy);
  gap: 6px;
}

.filter-bar select,
.filter-bar input {
  min-width: 150px;
}

.secondary-btn {
  padding: 9px 16px;
  font-size: 13px;
  font-weight: bold;
  background: var(--white);
  color: var(--navy);
  border: 1px solid var(--navy);
  border-radius: 6px;
  cursor: pointer;
}

.secondary-btn:hover {
  background: var(--navy-soft);
}

.select-group {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: normal;
  color: var(--text);
  flex-wrap: wrap;
}

.select-group select {
  padding: 8px 6px;
  font-size: 14px;
}

.select-group .unit {
  margin-right: 6px;
  color: var(--muted);
}

@media (max-width: 600px) {
  .card {
    padding: 20px 18px;
  }

  .app-header {
    padding: 22px 18px;
  }
}