/* ---------- Theme variables ---------- */

:root {
  --bg: #171717;
  --text: #d4d4d4;
  --text-strong: #fafafa;
  --text-muted: #a3a3a3;
  --border: #404040;
  --hover-bg: #262626;
  --card-bg: #1f1f1f;
  --danger: #f87171;
  color-scheme: dark;
}

html[data-theme="light"] {
  --bg: #fafafa;
  --text: #404040;
  --text-strong: #171717;
  --text-muted: #737373;
  --border: #d4d4d4;
  --hover-bg: #e5e5e5;
  --card-bg: #ffffff;
  --danger: #dc2626;
  color-scheme: light;
}

@media (prefers-color-scheme: light) {
  html[data-theme="system"] {
    --bg: #fafafa;
    --text: #404040;
    --text-strong: #171717;
    --text-muted: #737373;
    --border: #d4d4d4;
    --hover-bg: #e5e5e5;
    --card-bg: #ffffff;
    --danger: #dc2626;
    color-scheme: light;
  }
}

/* ---------- Base ---------- */

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  transition: background 0.25s ease, color 0.25s ease;
  min-height: 100vh;
}

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}

/* ---------- Header ---------- */

header.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 72px;
}

.avatar-btn {
  display: inline-block;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  border-radius: 8px;
  line-height: 0;
  text-decoration: none;
}

.avatar-btn img {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: block;
  transition: opacity 0.2s ease;
}

.avatar-btn:hover img {
  opacity: 0.8;
}

.avatar-btn:focus-visible {
  outline: 2px solid var(--text-muted);
  outline-offset: 3px;
}

nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

nav button,
nav a {
  background: none;
  border: none;
  color: var(--text-muted);
  font: inherit;
  font-size: 15px;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: 6px;
  text-decoration: none;
  transition: color 0.15s ease, background 0.15s ease;
}

nav button:hover,
nav a:hover {
  color: var(--text-strong);
  background: var(--hover-bg);
}

nav button.active {
  color: var(--text-strong);
}

nav button:focus-visible,
nav a:focus-visible {
  outline: 2px solid var(--text-muted);
  outline-offset: 2px;
}

.theme-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
}

.theme-btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- Typography ---------- */

h1 {
  color: var(--text-strong);
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

h2.page-title {
  color: var(--text-strong);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.tagline {
  color: var(--text-muted);
  font-size: 1.15rem;
  margin-bottom: 28px;
}

.location {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 32px;
}

.location svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

p {
  margin-bottom: 24px;
}

p:last-child {
  margin-bottom: 0;
}

strong {
  color: var(--text-strong);
  font-weight: 600;
}

.u {
  color: var(--text-strong);
  font-weight: 600;
  border-bottom: 1px dashed var(--border);
}

/* ---------- Content lists ---------- */

.empty {
  color: var(--text-muted);
  padding-top: 12px;
  font-size: 1.05rem;
}

.thought {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.thought:last-child {
  border-bottom: none;
}

.thought h3 {
  color: var(--text-strong);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.thought .date {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 10px;
}

.thought .body {
  margin-bottom: 0;
}

.thought .body p {
  margin-bottom: 12px;
}

.thought .body p:last-child {
  margin-bottom: 0;
}

.thought .body h3 {
  font-size: 1.05rem;
  margin: 14px 0 6px;
}

.thought .body blockquote {
  border-left: 3px solid var(--border);
  padding-left: 14px;
  color: var(--text-muted);
  margin: 10px 0;
}

.thought .body ul,
.thought .body ol {
  padding-left: 24px;
  margin: 8px 0;
}

.thought .body pre,
.thought .body code {
  background: var(--hover-bg);
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}

.thought .body pre {
  padding: 10px 14px;
  margin: 10px 0;
  white-space: pre-wrap;
  overflow-x: auto;
}

.thought .body code {
  padding: 1px 6px;
}

.thought .body a {
  color: var(--text-strong);
  text-decoration: underline;
}

.thought .body u {
  text-decoration: underline;
}

.thought .body s,
.thought .body strike {
  text-decoration: line-through;
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.photo-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 10px;
  display: block;
  background: var(--hover-bg);
}

.photo-card .caption {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 6px;
}

/* ---------- Forms & buttons ---------- */

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

input[type="text"],
input[type="email"],
input[type="password"],
textarea {
  width: 100%;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-strong);
  font: inherit;
  font-size: 16px;
  padding: 10px 14px;
  transition: border-color 0.15s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--text-muted);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--text-strong);
  color: var(--bg);
  border: none;
  border-radius: 8px;
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  padding: 10px 20px;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.btn:hover {
  opacity: 0.85;
}

.btn:disabled {
  opacity: 0.5;
  cursor: default;
}

.btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  color: var(--danger);
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 6px 14px;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

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

.error-msg {
  color: var(--danger);
  font-size: 0.9rem;
  margin-top: 12px;
  margin-bottom: 0;
}

.ok-msg {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 10px;
}

/* ---------- Footer ---------- */

footer.site-footer {
  margin-top: 96px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-links a:hover {
  color: var(--text-strong);
}

/* ---------- Motion ---------- */

.page {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page {
    animation: none;
  }
  body,
  nav button,
  nav a {
    transition: none;
  }
}

/* ---------- Mobile ---------- */

@media (max-width: 480px) {
  body {
    font-size: 16px;
  }
  header.site-header {
    margin-bottom: 48px;
  }
  h1 {
    font-size: 2rem;
  }
  .photo-grid {
    grid-template-columns: 1fr;
  }
}