:root {
  --bg: #f2e3de;
  --card: rgba(255, 255, 255, 0.75);
  --text: #3e2f2c;
  --accent: #a25c4a;
  --accent-dopamine: #d16856;
  --highlight: #7a3e31;
  --shadow: rgba(0, 0, 0, 0.12);
}

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

header {
  background: var(--accent);
  padding: 2rem 1rem;
  text-align: center;
  box-shadow: 0 4px 12px var(--shadow);
  color: white;
}

header h1 {
  margin: 0;
  font-size: 3rem;
  font-weight: 800;
  color: white;
  letter-spacing: 1px;
}

nav {
  display: flex;
  justify-content: center;
  gap: 1rem;
  background-color: #e8d5cc;
  padding: 1rem;
  box-shadow: 0 2px 6px var(--shadow);
}

nav button {
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--text);
  padding: 0.5em 1.2em;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

nav button:hover,
nav button.active {
  background: var(--accent);
  color: #fff;
}

main {
  max-width: 1024px;
  margin: auto;
  padding: 2rem 1rem;
}

.card {
  background: var(--card);
  backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
  margin-bottom: 2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.1);
}

h2, h3 {
  color: var(--highlight);
  margin-bottom: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

th, td {
  padding: 0.8em;
  border: 1px solid #ccc;
  text-align: center;
  background: rgba(255,255,255,0.8);
}

input, select {
  padding: 0.5em;
  border-radius: 6px;
  border: 1px solid #bbb;
  background: #fff;
  color: var(--text);
}

input[type="checkbox"] {
  transform: scale(1.3);
  margin-left: 0.5em;
}

button.save {
  background: linear-gradient(135deg, var(--accent), var(--accent-dopamine));
  color: #fff;
  font-weight: bold;
  border: none;
  padding: 0.6em 1.4em;
  font-size: 1rem;
  border-radius: 8px;
  margin-top: 1rem;
  cursor: pointer;
  transition: background 0.3s ease;
}

button.save:hover {
  filter: brightness(1.1);
}