/* ProofLink Blog — blog.css */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink        : #0d0d0b;
  --ink-2      : #1a1916;
  --muted      : #6b6560;
  --cream      : #f5f2eb;
  --cream-2    : #ede8dd;
  --cream-3    : #e4ddd0;
  --border     : #d8d2c5;
  --border-2   : #c8c0b0;
  --orange     : #c84b2f;
  --orange-h   : #a83820;
  --orange-bg  : rgba(200,75,47,.08);
  --white      : #ffffff;
  --font-d     : 'Syne', ui-sans-serif, sans-serif;
  --font-b     : 'DM Sans', ui-sans-serif, sans-serif;
  --r          : 8px;
  --r2         : 14px;
  --max        : 1060px;
  --prose      : 720px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-b);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Nav ──────────────────────────────────────────────────────── */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.95rem 2.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--cream);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-logo {
  font-family: var(--font-d);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.03em;
}
.nav-logo span { color: var(--orange); }

.nav-links { display: flex; gap: 1.75rem; align-items: center; }
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); }

.btn-nav {
  background: var(--orange) !important;
  color: #fff !important;
  font-family: var(--font-d);
  font-weight: 700;
  font-size: 0.875rem;
  padding: 0.5rem 1.25rem;
  border-radius: var(--r);
  letter-spacing: -0.01em;
  transition: background 0.15s, transform 0.1s;
}
.btn-nav:hover {
  background: var(--orange-h) !important;
  transform: translateY(-1px);
}

/* ── Blog index ───────────────────────────────────────────────── */
.blog-header {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4rem 2.25rem 2.5rem;
  border-bottom: 1px solid var(--border);
}

.blog-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--orange);
  border: 1px solid rgba(200,75,47,.35);
  background: var(--orange-bg);
  padding: 0.3rem 0.8rem;
  border-radius: 99px;
  margin-bottom: 1.25rem;
}

.blog-header h1 {
  font-family: var(--font-d);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--ink);
  margin-bottom: 0.75rem;
  line-height: 1.15;
}

.blog-header p {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 560px;
  line-height: 1.7;
}

.blog-grid {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3rem 2.25rem 5rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.blog-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}
.blog-card:hover {
  border-color: var(--border-2);
  box-shadow: 0 6px 24px rgba(13,13,11,.08);
  transform: translateY(-2px);
}

.blog-card-tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--orange);
}

.blog-card h2 {
  font-family: var(--font-d);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--ink);
  line-height: 1.25;
}

.blog-card p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.65;
  flex: 1;
}

.blog-card-meta {
  font-size: 0.8rem;
  color: var(--muted);
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.read-more {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--orange);
}
.read-more::after { content: ' →'; }

/* ── Article page ─────────────────────────────────────────────── */
.article-header {
  max-width: var(--prose);
  margin: 0 auto;
  padding: 4rem 2.25rem 2.5rem;
}

.article-header .blog-tag { margin-bottom: 1.5rem; }

.article-header h1 {
  font-family: var(--font-d);
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--ink);
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.85rem;
  color: var(--muted);
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.article-meta-author {
  font-weight: 600;
  color: var(--ink);
}

/* ── Prose ────────────────────────────────────────────────────── */
.article-body {
  max-width: var(--prose);
  margin: 0 auto;
  padding: 2.5rem 2.25rem 0;
}

.article-body p {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--ink-2);
  margin-bottom: 1.5rem;
}

.article-body h2 {
  font-family: var(--font-d);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin: 2.75rem 0 1rem;
  line-height: 1.2;
}

.article-body h3 {
  font-family: var(--font-d);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 2rem 0 0.75rem;
  line-height: 1.3;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.5rem 1.5rem;
}

.article-body li {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--ink-2);
  margin-bottom: 0.4rem;
}

.article-body strong { font-weight: 600; color: var(--ink); }

.article-body blockquote {
  margin: 2rem 0;
  padding: 1.25rem 1.5rem;
  border-left: 3px solid var(--orange);
  background: var(--orange-bg);
  border-radius: 0 var(--r) var(--r) 0;
}

.article-body blockquote p {
  font-size: 1.05rem;
  font-style: italic;
  color: var(--ink);
  margin: 0;
}

/* ── Article callout ──────────────────────────────────────────── */
.article-callout {
  max-width: var(--prose);
  margin: 3.5rem auto 0;
  padding: 0 2.25rem 5rem;
}

.callout-box {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 2rem 2.25rem;
  border-left: 4px solid var(--orange);
}

.callout-box h3 {
  font-family: var(--font-d);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.02em;
  margin-bottom: 0.6rem;
}

.callout-box p {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.callout-box a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--orange);
  color: #fff;
  font-family: var(--font-d);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--r);
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
}
.callout-box a:hover {
  background: var(--orange-h);
  transform: translateY(-1px);
}

/* ── Back link ────────────────────────────────────────────────── */
.back-link {
  max-width: var(--prose);
  margin: 0 auto;
  padding: 1.75rem 2.25rem 0;
}

.back-link a {
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 0.15s;
}
.back-link a::before { content: '←'; }
.back-link a:hover { color: var(--ink); }

/* ── Footer ───────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 2.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.footer-logo {
  font-family: var(--font-d);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}
.footer-logo span { color: var(--orange); }

.footer-links {
  font-size: 0.82rem;
  color: var(--muted);
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-links a { color: var(--muted); text-decoration: none; transition: color 0.15s; }
.footer-links a:hover { color: var(--ink); }

.footer-copy { font-size: 0.8rem; color: var(--muted); }

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 860px) {
  .blog-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  nav { padding: 0.875rem 1.25rem; }
  .nav-links a:not(.btn-nav) { display: none; }
  .blog-header { padding: 2.5rem 1.25rem 2rem; }
  .blog-grid { grid-template-columns: 1fr; padding: 2rem 1.25rem 3.5rem; }
  .article-header { padding: 2.5rem 1.25rem 2rem; }
  .article-body { padding: 2rem 1.25rem 0; }
  .article-callout { padding: 0 1.25rem 3.5rem; }
  .back-link { padding: 1.5rem 1.25rem 0; }
  footer { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
}

/* ── Mobile hamburger nav ─────────────────────────────────────── */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 0.45rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  font-family: var(--font-b);
}

@media (max-width: 600px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--cream);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1rem 1.25rem 1.25rem;
    gap: 0.875rem;
    z-index: 200;
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1rem; }
  .btn-nav { text-align: center; }
  nav { position: relative; }
}

/* ── Comment section ──────────────────────────────────────────── */
.comment-section {
  max-width: var(--prose);
  margin: 0 auto;
  padding: 3rem 2.25rem 0;
  border-top: 1px solid var(--border);
}

.comment-section h2 {
  font-family: var(--font-d);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 0.5rem;
}

.comment-section > p {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1.75rem;
}

.comment-form {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 1.5rem;
  margin-bottom: 2.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.875rem;
  margin-bottom: 0.875rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-field label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.form-field input,
.form-field textarea {
  font-family: var(--font-b);
  font-size: 0.9rem;
  color: var(--ink);
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 0.6rem 0.875rem;
  outline: none;
  transition: border-color 0.15s;
  width: 100%;
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--orange);
  background: var(--white);
}

.form-field textarea {
  resize: vertical;
  min-height: 110px;
  line-height: 1.6;
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin: 0.875rem 0;
}

.form-check input[type="checkbox"] {
  margin-top: 2px;
  accent-color: var(--orange);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.form-check label {
  font-size: 0.83rem;
  color: var(--muted);
  line-height: 1.5;
  cursor: pointer;
}

.form-honey { display: none !important; }

.btn-submit {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--orange);
  color: #fff;
  font-family: var(--font-d);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.65rem 1.5rem;
  border-radius: var(--r);
  border: none;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  margin-top: 0.25rem;
}
.btn-submit:hover { background: var(--orange-h); transform: translateY(-1px); }
.btn-submit:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.form-msg {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  padding: 0.65rem 1rem;
  border-radius: var(--r);
  display: none;
}
.form-msg.success { background: #f0f7f0; color: #2e7d32; border: 1px solid #b8d9ba; display: block; }
.form-msg.error   { background: #faf0ed; color: var(--orange-h); border: 1px solid var(--redBorder, #f0c4b8); display: block; }

/* Published comments list */
.comments-list { display: flex; flex-direction: column; gap: 1.25rem; margin-bottom: 1rem; }

.comment-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 1.25rem 1.5rem;
}

.comment-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.comment-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--orange-bg);
  border: 1px solid rgba(200,75,47,.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-d);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--orange);
  flex-shrink: 0;
  text-transform: uppercase;
}

.comment-author { font-size: 0.875rem; font-weight: 600; color: var(--ink); }
.comment-date   { font-size: 0.78rem; color: var(--muted); }
.comment-text   { font-size: 0.9rem; color: var(--ink-2); line-height: 1.7; }

/* ── Subscribe section ────────────────────────────────────────── */
.subscribe-section {
  max-width: var(--prose);
  margin: 2.5rem auto 0;
  padding: 0 2.25rem;
}

.subscribe-box {
  background: var(--cream-2);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 1.75rem 2rem;
}

.subscribe-box h3 {
  font-family: var(--font-d);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
}

.subscribe-box p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.subscribe-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.subscribe-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

/* Responsive adjustments for comment + subscribe */
@media (max-width: 600px) {
  .comment-section { padding: 2rem 1.25rem 0; }
  .subscribe-section { padding: 0 1.25rem; }
  .form-row { grid-template-columns: 1fr; }
  .subscribe-row { grid-template-columns: 1fr; }
  .comment-form { padding: 1.25rem; }
  .subscribe-box { padding: 1.25rem; }
}