/* ── Colors ── */
:root {
  --color-bg:        #1E2A38;
  --color-surface:   #2D3F52;
  --color-accent:    #6BBFA0;
  --color-accent-dk: #4A9E82;
  --color-text:      #E8EEF4;
  --color-muted:     #A8C4B8;
  --color-border:    rgba(168, 196, 184, 0.2);
}

/* ── Reset & Base ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Typography ── */
h1 {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

h3 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-muted);
}

p {
  color: var(--color-muted);
  margin-bottom: 1rem;
}

/* ── Links ── */
a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-text);
}

/* ── Header ── */
header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 2rem;
}

.header-title {
  margin-bottom: 0.75rem;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 0.75rem;
}

.site-logo {
  height: 56px;
  width: 56px;
  object-fit: contain;
  border-radius: 50%;
}

/* ── Nav ── */
nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0;
  margin-bottom: 0.25rem;
}

nav a {
  color: var(--color-muted);
  font-size: 0.875rem;
  padding: 2px 0;
  transition: color 0.15s ease;
}

nav a:hover {
  color: var(--color-accent);
}

.active {
  color: var(--color-accent);
  font-weight: 500;
}

nav span {
  color: var(--color-muted);
  padding: 0 6px;
}

/* ── Main ── */
main {
  flex: 1;
  background-color: var(--color-surface);
  padding: 2rem;
  max-width: 960px;
  width: 100%;
  margin: 2rem auto;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  box-sizing: border-box;
}

/* ── Buttons ── */
button,
input[type="submit"] {
  background-color: var(--color-accent);
  color: #0D3328;
  border: none;
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

button:hover,
input[type="submit"]:hover {
  background-color: var(--color-accent-dk);
}

/* ── Form Inputs ── */
input[type="text"],
input[type="email"],
textarea,
select {
  background-color: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  width: 100%;
  box-sizing: border-box;
  transition: border-color 0.15s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus,
select:focus {
  border-color: var(--color-accent);
}

/* ── Survey / Fieldset Spacing ── */
fieldset {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem 1.75rem;
  margin-top: 2rem;
  margin-bottom: 2rem;
}

fieldset + fieldset {
  margin-top: 2.5rem;
}

legend {
  color: var(--color-accent);
  font-size: 1.1rem;
  font-weight: 600;
  padding: 0 0.5rem;
  margin-bottom: 1rem;
}

fieldset label {
  display: block;
  color: var(--color-text);
  margin-top: 1rem;
  margin-bottom: 0.4rem;
}

fieldset input[type="number"] {
  background-color: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  width: 100%;
  box-sizing: border-box;
  transition: border-color 0.15s ease;
}

fieldset input[type="number"]:focus {
  border-color: var(--color-accent);
}

fieldset textarea {
  margin-top: 0.5rem;
  margin-bottom: 1rem;
}

fieldset p {
  color: var(--color-muted);
  margin-top: 1.25rem;
  margin-bottom: 0.75rem;
}

/* Checkbox / radio rows */
fieldset label input[type="checkbox"],
fieldset label input[type="radio"] {
  margin-right: 0.5rem;
}

/* Form action buttons */
form button[type="submit"],
form button[type="reset"] {
  margin-top: 1.5rem;
  margin-right: 0.75rem;
}

form button[type="reset"] {
  background-color: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

form button[type="reset"]:hover {
  background-color: var(--color-bg);
  color: var(--color-text);
}

/* ── Tables ── */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th {
  background-color: var(--color-bg);
  color: var(--color-accent);
  font-weight: 500;
  padding: 0.6rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-muted);
}

tr:last-child td {
  border-bottom: none;
}

/* ── Images ── */
img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
}

/* ── Footer ── */
footer {
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 1rem 2rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-muted);
}

footer a {
  color: var(--color-accent);
}

footer img {
  height: 20px;
  margin: 0 4px;
  vertical-align: middle;
  border-radius: 0;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  header {
    padding: 1rem;
  }

  main {
    margin: 1rem;
    padding: 1.25rem;
  }

  .header-title {
    font-size: 1.35rem;
  }

  nav {
    gap: 0;
  }
}