:root {
  --color-bg: #f5f9fb;
  --color-surface: #ffffff;
  --color-text: #17242c;
  --color-text-muted: #57707c;
  --color-primary: #1a6f8f;
  --color-primary-dark: #0d4a63;
  --color-accent: #e3f1f6;
  --color-border: #dde9ee;
  --radius: 14px;
  --shadow: 0 4px 16px rgba(13, 74, 99, 0.08);
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  display: flex;
  min-height: 100vh;
}

.page-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Left-hand site sidebar (replaces the old top header nav) */
.site-sidebar {
  order: -1;
  width: 260px;
  flex-shrink: 0;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: 28px 20px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
  color: var(--color-primary-dark);
  margin-bottom: 32px;
}

.sidebar-brand > span {
  font-size: 1.5rem;
  font-weight: 800;
}

.sidebar-brand .brand-tagline {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  font-style: italic;
  color: var(--color-primary);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  transition: all 0.15s ease;
}

.sidebar-link:hover {
  background: var(--color-accent);
  color: var(--color-primary-dark);
}

.sidebar-link.active {
  background: var(--color-primary);
  color: #fff;
}

.sidebar-subnav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 2px 0 8px 14px;
  padding-left: 14px;
  border-left: 2px solid var(--color-border);
}

.sidebar-sublink {
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 0.86rem;
  color: var(--color-text-muted);
  transition: all 0.15s ease;
}

.sidebar-sublink:hover {
  background: var(--color-accent);
  color: var(--color-primary-dark);
}

.sidebar-sublink.active {
  background: var(--color-accent);
  color: var(--color-primary-dark);
  font-weight: 700;
}

@media (max-width: 900px) {
  body {
    flex-direction: column;
  }

  .site-sidebar {
    order: 2;
    width: 100%;
    height: auto;
    position: static;
    border-right: none;
    border-top: 1px solid var(--color-border);
  }
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color-accent), var(--color-bg));
  padding: 64px 0 48px;
}

.hero h1 {
  font-size: 2.4rem;
  margin: 0 0 12px;
  color: var(--color-primary-dark);
}

.hero p {
  max-width: 640px;
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin: 0;
}

.hero-flex {
  display: flex;
  align-items: center;
  gap: 36px;
}

.hero-logo {
  width: 150px;
  height: 150px;
  flex-shrink: 0;
}

@media (max-width: 640px) {
  .hero-flex {
    flex-direction: column;
    text-align: center;
    gap: 20px;
  }

  .hero-logo {
    width: 110px;
    height: 110px;
  }
}

/* Post grid */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  padding: 32px 0 72px;
}

.post-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(24, 60, 41, 0.14);
}

.post-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.post-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.post-tag {
  align-self: flex-start;
  background: var(--color-accent);
  color: var(--color-primary-dark);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.post-card h2 {
  font-size: 1.15rem;
  margin: 0;
}

.post-card p {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  margin: 0;
  flex: 1;
}

.post-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
}

.read-more {
  color: var(--color-primary-dark);
  font-weight: 600;
  font-size: 0.88rem;
}

/* Detail page */
.post-detail {
  padding: 48px 0 80px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary-dark);
  font-weight: 600;
  margin-bottom: 24px;
}

.post-detail img.hero-image {
  width: 100%;
  max-height: 380px;
  object-fit: cover;
  border-radius: var(--radius);
}

.image-credit {
  margin: 8px 0 24px;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-align: right;
}

.post-detail h1 {
  font-size: 2rem;
  margin: 0 0 8px;
  color: var(--color-primary-dark);
}

.post-detail .post-meta {
  margin-bottom: 24px;
  font-size: 0.9rem;
}

.post-body h3 {
  color: var(--color-primary-dark);
}

.post-body ul {
  padding-left: 20px;
}

.post-body blockquote {
  margin: 20px 0;
  padding: 14px 20px;
  border-left: 4px solid var(--color-primary);
  background: var(--color-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--color-text);
}

.not-found {
  text-align: center;
  padding: 80px 0;
  color: var(--color-text-muted);
}

/* Footer */
.site-footer {
  background: var(--color-primary-dark);
  color: #dcefe4;
  padding: 32px 0;
  margin-top: auto;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
}

/* About page */
.about-page {
  padding: 48px 0 80px;
}

.about-section {
  margin-bottom: 56px;
}

.about-section h2 {
  font-size: 1.6rem;
  color: var(--color-primary-dark);
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-accent);
}

.about-intro {
  color: var(--color-text-muted);
  max-width: 760px;
}

.about-columns {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  align-items: start;
}

.callout-box {
  background: var(--color-accent);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.callout-box h3 {
  margin: 0 0 12px;
  font-size: 1rem;
  color: var(--color-primary-dark);
}

.callout-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.callout-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.92rem;
}

.icon-chip {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-surface);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}

.tag-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.tag-chip {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.85rem;
  color: var(--color-primary-dark);
  font-weight: 600;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.info-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
}

.info-card h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
  color: var(--color-primary-dark);
}

.info-card p,
.info-card ul {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0;
}

.info-card ul {
  padding-left: 18px;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.process-step {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  text-align: center;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  margin-bottom: 10px;
}

.process-step h3 {
  font-size: 0.98rem;
  margin: 0 0 8px;
  color: var(--color-primary-dark);
}

.process-step p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0;
}

@media (max-width: 800px) {
  .about-columns {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero h1 {
    font-size: 1.8rem;
  }

  .report-form {
    grid-template-columns: 1fr;
    padding: 24px;
  }
}

/* Sighting report form */
.report-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 28px;
  width: 100%;
  max-width: 820px;
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field-full {
  grid-column: 1 / -1;
}

.report-form label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-primary-dark);
}

.report-form input,
.report-form select,
.report-form textarea {
  font: inherit;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg);
  color: var(--color-text);
  resize: vertical;
  width: 100%;
}

.report-form input:focus,
.report-form select:focus,
.report-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.report-form button {
  align-self: flex-start;
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 12px 32px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.15s ease;
}

.report-form button:hover {
  background: var(--color-primary-dark);
}

.report-form button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-status {
  margin: 10px 0 0;
  font-size: 0.9rem;
}

.form-status.success {
  color: #1a8f5e;
}

.form-status.error {
  color: #c0392b;
}

/* Community-submitted post cards */
.community-tag {
  background: #fdeecb;
  color: #92610d;
}