style.css

/* Global layout & typography */
* {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0;
  padding: 0;
  background: #f4f5fb;
  color: #222;
}

/* Top navigation */
.top-nav {
  max-width: 960px;
  margin: 0 auto 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-start;
}

.nav-btn {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  border: 1px solid #c4c7d4;
  background: #f5f6ff;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  color: #2f3c6e;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  transition: background 0.15s ease, transform 0.1s ease, box-shadow 0.1s ease;
}

.nav-btn:hover {
  background: #e0e3ff;
  transform: translateY(-1px);
  box-shadow: 0 2px 5px rgba(0,0,0,0.08);
}

.nav-btn:active {
  transform: translateY(0);
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

/* Active nav button (current page) */
.nav-btn.active {
  background: #2f6feb;
  color: #ffffff;
  border-color: #2f6feb;
  cursor: default;
  box-shadow: none;
  pointer-events: none; /* makes it unclickable */
}

.nav-btn.active:hover,
.nav-btn.active:active {
  background: #2f6feb;
  transform: none;
  box-shadow: none;
}

h1 {
  text-align: center;
  margin: 1.5rem 0 1rem;
  font-size: 1.6rem;
}

/* Form container: looks like a card on the page */
form#test-form {
  max-width: 960px;
  margin: 0 auto 2rem;
  padding: 1.5rem 2rem;
  background: #ffffff;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

/* Fieldsets behave like separate tables/sections */
fieldset {
  border: 1px solid #d5d7e2;
  border-radius: 8px;
  padding: 1rem 1.25rem 1.25rem;
  margin-bottom: 1.5rem;
  background: #fafbff;
}

legend {
  padding: 0 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: #394263;
}

/* Labels + inputs stacked clearly */
label {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
}

label > input,
label > select,
label > textarea {
  margin-top: 0.25rem;
}

/* Inputs styling */
input[type="text"],
input[type="date"],
input[type="number"],
select,
textarea {
  width: 100%;
  max-width: 260px;
  padding: 0.4rem 0.5rem;
  border-radius: 4px;
  border: 1px solid #c4c7d4;
  font-size: 0.9rem;
  background: #ffffff;
}

input[type="number"] {
  max-width: 140px;
}

textarea {
  max-width: 100%;
  min-height: 3rem;
  resize: vertical;
}

/* Small descriptive paragraphs in fieldsets */
fieldset p {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: 0.85rem;
  color: #555b7a;
}

/* Button */
button[type="submit"] {
  display: inline-block;
  padding: 0.55rem 1.4rem;
  border-radius: 6px;
  border: none;
  font-size: 0.95rem;
  font-weight: 600;
  background: #2f6feb;
  color: #ffffff;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(47, 111, 235, 0.4);
  transition: background 0.15s ease, transform 0.1s ease, box-shadow 0.1s ease;
}

button[type="submit"]:hover {
  background: #2555b8;
  transform: translateY(-1px);
  box-shadow: 0 3px 6px rgba(37, 85, 184, 0.45);
}

button[type="submit"]:active {
  transform: translateY(0);
  box-shadow: 0 1px 3px rgba(37, 85, 184, 0.35);
}

/* Status message */
#status {
  max-width: 960px;
  margin: 0.5rem auto 2.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  text-align: center;
  color: #1f2933;
}

/* Give success / error messages visual weight via simple heuristics */
#status:empty {
  display: none;
}

/* If message contains ✅, make it green-ish */
#status:has(> span.success),
#status.success {
  background: #e6f6ec;
  border-radius: 6px;
  border: 1px solid #83c39c;
  color: #14532d;
}

/* If message contains "Error", make it red-ish (your JS can later add a class if you want) */
#status.error {
  background: #fde8e8;
  border-radius: 6px;
  border: 1px solid #f19999;
  color: #7f1d1d;
}

/* Slightly tighter spacing on mobile */
@media (max-width: 600px) {
  form#test-form {
    padding: 1.25rem 1.1rem;
    margin: 0 0.5rem 1.5rem;
  }

  input[type="text"],
  input[type="date"],
  input[type="number"],
  select {
    max-width: 100%;
  }
}