@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital,wght@0,300;0,400;0,500;1,300;1,400&display=swap');

/* ─── Design Tokens ───────────────────────────────────────────────────── */
:root {
  --bg:          #080808;
  --bg-raised:   #0e0e0e;
  --bg-input:    #111;
  --text:        #d4d4c8;
  --text-muted:  #555;
  --text-faint:  #333;
  --accent:      #c8a96e;   /* amber — event horizon glow  */
  --accent-dim:  #7a6640;
  --border:      #1c1c1c;
  --border-mid:  #2a2a2a;
  --danger:      #c85050;
  --font:        'IBM Plex Mono', 'Courier New', Courier, monospace;
  --max-width:   800px;
  --gap:         1.5rem;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-weight: 300;
  font-size: 0.9rem;
  line-height: 1.75;
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

/* ─── Layout ──────────────────────────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ─── Navigation ──────────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 8, 8, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 0.9rem 1.5rem;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
}

.nav-back {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: color 0.2s;
}
.nav-back:hover { color: var(--text); text-decoration: none; }
.nav-back::before { content: '← '; }

/* ─── Site Header ─────────────────────────────────────────────────────── */
.site-header {
  padding: 0 0 0;
  text-align: left;
}

/* Hero image */
.site-hero {
  position: relative;
  width: 100%;
  max-height: 340px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}

.site-hero-img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  object-position: center;
  display: block;
  opacity: 0.85;
  filter: brightness(0.9) saturate(1.1);
}

/* Gradient fade into the page background at the bottom */
.site-hero-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 40%,
    rgba(8, 8, 8, 0.6) 75%,
    var(--bg) 100%
  );
  pointer-events: none;
}

.site-header .container {
  border-bottom: 1px solid var(--border);
  padding-top: 2rem;
  padding-bottom: 2.5rem;
}

.site-hero-credit {
  font-size: 0.65rem;
  color: var(--text-faint);
  letter-spacing: 0.06em;
  margin-top: 0.9rem;
}
.site-hero-credit a { color: var(--text-faint); }
.site-hero-credit a:hover { color: var(--text-muted); }

.site-title {
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

/* typewriter cursor */
.site-title .cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--accent);
  margin-left: 3px;
  vertical-align: middle;
  animation: blink 0.8s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.site-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: lowercase;
  font-style: italic;
}

/* ─── Post List ───────────────────────────────────────────────────────── */
.post-list {
  padding: 2.5rem 1.5rem;
}

.post-list .container {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.post-item {
  display: block;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: background 0.15s;
}

.post-item:first-child { border-top: 1px solid var(--border); }

.post-item:hover .post-title { color: var(--accent); }
.post-item:hover { text-decoration: none; }

.post-meta {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.post-title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.02em;
  margin-bottom: 0.5rem;
  transition: color 0.15s;
}

.post-excerpt {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-read-more {
  display: inline-block;
  margin-top: 0.6rem;
  font-size: 0.72rem;
  color: var(--accent-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ─── Newsletter ──────────────────────────────────────────────────────── */
.newsletter {
  padding: 2.5rem 1.5rem 3rem;
  background: var(--bg-raised);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.newsletter-label {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.newsletter-heading {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.4rem;
  letter-spacing: 0.04em;
}

.newsletter-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  max-width: 440px;
}

.newsletter-form {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  max-width: 440px;
}

.newsletter-input {
  flex: 1;
  min-width: 200px;
  background: var(--bg-input);
  border: 1px solid var(--border-mid);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.82rem;
  padding: 0.55rem 0.85rem;
  outline: none;
  transition: border-color 0.2s;
}

.newsletter-input::placeholder { color: var(--text-faint); }

.newsletter-input:focus { border-color: var(--accent-dim); }

.btn {
  background: transparent;
  border: 1px solid var(--accent-dim);
  color: var(--accent);
  font-family: var(--font);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.btn:hover {
  background: var(--accent);
  color: var(--bg);
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-sm {
  font-size: 0.7rem;
  padding: 0.4rem 0.85rem;
}

.btn-danger {
  border-color: var(--danger);
  color: var(--danger);
}
.btn-danger:hover {
  background: var(--danger);
  color: var(--bg);
}

/* ─── Post Page ───────────────────────────────────────────────────────── */
.post-header {
  padding: 3rem 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
}

.post-category {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-dim);
  margin-bottom: 0.75rem;
}

.post-header-title {
  font-size: clamp(1.2rem, 3.5vw, 1.7rem);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 1rem;
}

.post-header-meta {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.post-header-meta span + span::before {
  content: ' · ';
  color: var(--text-faint);
}

/* ─── Post Body ───────────────────────────────────────────────────────── */
.post-body {
  padding: 2.5rem 1.5rem;
}

.post-body p {
  margin-bottom: 1.4rem;
  font-size: 0.9rem;
  line-height: 1.85;
}

.post-body blockquote {
  border-left: 2px solid var(--accent-dim);
  margin: 2rem 0;
  padding: 0.75rem 1.25rem;
  background: var(--bg-raised);
  font-style: italic;
  color: var(--text-muted);
}

.post-body blockquote p { margin-bottom: 0.5rem; }
.post-body blockquote p:last-child { margin-bottom: 0; }

.post-body blockquote cite {
  font-size: 0.75rem;
  color: var(--text-faint);
  font-style: normal;
  display: block;
  margin-top: 0.6rem;
}

.post-body h2 {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  margin: 2.5rem 0 1rem;
}

.post-body figure {
  margin: 2rem 0;
}

.post-body figcaption {
  font-size: 0.72rem;
  color: var(--text-faint);
  margin-top: 0.5rem;
  font-style: italic;
  text-align: center;
}

.post-body img {
  width: 100%;
  border: 1px solid var(--border);
}

.post-divider {
  text-align: center;
  color: var(--text-faint);
  font-size: 0.8rem;
  letter-spacing: 0.4em;
  margin: 3rem 0;
}

/* ─── Comments ────────────────────────────────────────────────────────── */
.comments-section {
  padding: 2rem 1.5rem 3rem;
  border-top: 1px solid var(--border);
}

.comments-heading {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* Auth */
.auth-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.auth-bar-info {
  flex: 1;
  min-width: 180px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.auth-bar-info strong {
  color: var(--text);
  font-weight: 400;
}

.auth-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
}

/* Comment form */
.comment-form {
  margin-bottom: 2rem;
}

.comment-form textarea {
  width: 100%;
  min-height: 90px;
  background: var(--bg-input);
  border: 1px solid var(--border-mid);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.82rem;
  padding: 0.75rem 1rem;
  resize: vertical;
  outline: none;
  transition: border-color 0.2s;
  line-height: 1.65;
}

.comment-form textarea:focus { border-color: var(--accent-dim); }

.comment-form textarea::placeholder { color: var(--text-faint); }

.comment-form-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.5rem;
  gap: 0.5rem;
}

.char-count {
  font-size: 0.7rem;
  color: var(--text-faint);
}
.char-count.warn { color: var(--danger); }

/* Comment list */
.comment-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.comment {
  border-left: 2px solid var(--border);
  padding-left: 1rem;
}

.comment-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.35rem;
}

.comment-avatar {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.comment-author {
  font-size: 0.75rem;
  color: var(--text);
  font-weight: 400;
}

.comment-date {
  font-size: 0.68rem;
  color: var(--text-faint);
  flex: 1;
}

.comment-delete {
  font-size: 0.65rem;
  background: none;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  font-family: var(--font);
  padding: 0;
  transition: color 0.15s;
}
.comment-delete:hover { color: var(--danger); }

.comment-text {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
}

.comments-empty {
  font-size: 0.8rem;
  color: var(--text-faint);
  font-style: italic;
}

.comments-loading {
  font-size: 0.78rem;
  color: var(--text-faint);
  letter-spacing: 0.08em;
}

.comments-error {
  font-size: 0.78rem;
  color: var(--danger);
  padding: 0.75rem 1rem;
  border: 1px solid var(--danger);
  background: rgba(200, 80, 80, 0.05);
}

/* Firebase not configured notice */
.firebase-notice {
  font-size: 0.78rem;
  color: var(--text-faint);
  border: 1px dashed var(--border-mid);
  padding: 1rem 1.25rem;
  line-height: 1.6;
}
.firebase-notice a { color: var(--accent-dim); }
.firebase-notice code {
  background: var(--bg-raised);
  padding: 0.1em 0.35em;
  font-size: 0.9em;
}

/* ─── Footer ──────────────────────────────────────────────────────────── */
.footer {
  padding: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer p {
  font-size: 0.68rem;
  color: var(--text-faint);
  letter-spacing: 0.08em;
}

.footer a {
  color: var(--text-faint);
}
.footer a:hover { color: var(--text-muted); }

/* ─── Utilities ───────────────────────────────────────────────────────── */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* ─── Responsive ──────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .newsletter-form { flex-direction: column; }
  .newsletter-input { min-width: 0; width: 100%; }
  .comment-form-footer { flex-direction: column; align-items: flex-start; }
}