/* ==========================================================================
   Base Design Tokens & Resets
   ========================================================================== */
:root {
  --bg-page: #f4f4f5;
  --bg-card: #ffffff;
  --border-color: #18181b;
  --border-width: 2px;
  --shadow-offset: 4px;

  --text-main: #18181b;
  --text-muted: #71717a;
  --text-invert: #ffffff;

  --accent: #2563eb;
  --badge-bg: #f4f4f5;
  --badge-text: #27272a;

  --font-mono: "Courier Prime", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-page: #09090b;
    --bg-card: #18181b;
    --border-color: #3f3f46;
    --text-main: #f4f4f5;
    --text-muted: #a1a1aa;
    --badge-bg: #27272a;
    --badge-text: #e4e4e7;
  }
}

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

body {
  background-color: var(--bg-page);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 0;
}

@media (min-width: 768px) {
  body {
    padding: 24px 16px;
  }
}

/* ==========================================================================
   Shared Form Controls & Buttons
   ========================================================================== */
input[type="text"],
input[type="date"],
textarea,
select {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: var(--border-width) solid var(--border-color);
  background: var(--bg-page);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.95rem;
}

textarea {
  font-family: var(--font-mono);
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--accent);
  background: var(--bg-card);
}

.btn,
.btn-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.5rem 0.9rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  text-decoration: none;
  border: var(--border-width) solid var(--border-color);
  background: var(--text-main);
  color: var(--text-invert);
  transition: opacity 0.15s ease;
}

.btn:hover,
.btn-link:hover {
  opacity: 0.85;
}

.btn-secondary {
  background: transparent;
  color: var(--text-main);
}

.btn-danger {
  background: #ef4444;
  color: #fff;
  border-color: #b91c1c;
}

.btn-edit {
  background: var(--accent);
  color: #fff;
  border-color: #1d4ed8;
}

.tag-badge {
  background: var(--badge-bg);
  color: var(--badge-text);
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  border: 1px solid var(--border-color);
  text-transform: lowercase;
}

/* ==========================================================================
   Public Site Layout & Components
   ========================================================================== */
.site-wrapper {
  width: 100%;
  max-width: 760px;
  background-color: var(--bg-card);
  border-left: var(--border-width) solid var(--border-color);
  border-right: var(--border-width) solid var(--border-color);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

@media (min-width: 768px) {
  .site-wrapper {
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--border-color);
    min-height: auto;
  }
}

/* Header & Banner */
.site-header {
  border-bottom: var(--border-width) solid var(--border-color);
  background-color: #09090b;
}

.banner-container {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background-color: #18181b;
}

.banner-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.header-content {
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border-top: var(--border-width) solid var(--border-color);
}

.avatar-container {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
  border: var(--border-width) solid var(--border-color);
  overflow: hidden;
  background: var(--bg-card);
}

.avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.header-text h1 {
  font-size: 1.5rem;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: -0.5px;
}

.header-text p.tagline {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Navigation */
.nav-bar {
  background-color: var(--bg-page);
  padding: 10px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  border-bottom: var(--border-width) solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.825rem;
}

.nav-link {
  color: inherit;
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-link:hover {
  text-decoration: underline;
}

/* Bio & Main Feed */
.bio-section {
  padding: 20px;
  border-bottom: 1px dashed var(--border-color);
  font-size: 0.95rem;
  color: var(--text-muted);
}

main {
  flex-grow: 1;
  padding: 24px 20px;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.posts-feed {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.post-card {
  border: var(--border-width) solid var(--border-color);
  background: var(--bg-card);
  padding: 20px;
}

.post-card:hover {
  box-shadow: 2px 2px 0 var(--border-color);
}

.post-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.775rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.post-date {
  font-weight: 600;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.post-title {
  font-size: 1.25rem;
  font-weight: 700;
  font-family: var(--font-mono);
  margin-bottom: 8px;
}

.post-cover {
  width: 100%;
  max-height: 320px;
  object-fit: cover;
  border: var(--border-width) solid var(--border-color);
  margin: 14px 0;
  display: block;
}

.post-body {
  font-size: 0.95rem;
  line-height: 1.65;
  white-space: pre-line;
  margin-bottom: 16px;
}

.post-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--border-color);
}

.btn-link {
  background: var(--bg-card);
  color: var(--text-main);
  padding: 6px 12px;
  font-size: 0.8rem;
}

.btn-link:hover {
  background: var(--text-main);
  color: var(--text-invert);
}

/* Footer */
.site-footer {
  border-top: var(--border-width) solid var(--border-color);
  padding: 20px;
  background: var(--bg-card);
  font-family: var(--font-mono);
  font-size: 0.775rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  text-align: center;
}

@media (min-width: 600px) {
  .site-footer {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}