/* ============================================================
   攵傑 Blog — Design System
   Light editorial theme inspired by seasats.com
   (warm off-white base, sage green / sand surfaces,
    deep forest-green accents).

   Structure:
     1. Tokens (colors, fonts, spacing, radii)
     2. Reset & base
     3. Layout (container, section)
     4. Buttons
     5. Navigation & footer
     6. Hero (home)
     7. Category filter & post cards
     8. Empty state / spinner / toast
     9. Auth (login & register)
    10. Post page (hero, article typography, engagement, comments)
    11. Editor page
    12. About page
    13. Custom cursor & reveal animations
    14. Responsive & motion preferences
   ============================================================ */

/* ============================================================
   1. Tokens
   ============================================================ */

:root {
  color-scheme: light;

  /* Backgrounds */
  --bg-primary: #FFFDFD;
  --bg-secondary: #F0F2EE;
  --bg-tertiary: #EAE3DC;
  --bg-elevated: rgba(255, 253, 253, 0.92);

  /* Text */
  --text-primary: #232323;
  --text-body: #3E453C;
  --text-secondary: #757D70;
  --text-tertiary: #8E9489;

  /* Borders */
  --border-color: rgba(35, 35, 35, 0.08);
  --border-strong: rgba(35, 35, 35, 0.16);

  /* Accents */
  --accent-gold: #4B5746;
  --accent-gold-strong: #757D70;
  --accent-gold-dim: rgba(75, 87, 70, 0.1);
  --accent-coral: #C0564A;
  --accent-green: #4B5746;

  --gradient-card: linear-gradient(145deg, rgba(75, 87, 70, 0.06), rgba(35, 35, 35, 0.02) 60%);
  --gradient-gold: linear-gradient(135deg, #B7C8BE, #8FA396 45%, #4B5746);

  /* Fonts */
  --font-display: 'Syne', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Cascadia Code', Consolas, monospace;
  --font-serif: 'Playfair Display', 'Songti SC', 'SimSun', serif;

  /* Spacing */
  --space-xs: 0.375rem;
  --space-sm: 0.625rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Misc */
  --nav-height: 72px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  --shadow-card: 0 20px 50px rgba(43, 57, 34, 0.12);
  --shadow-gold: 0 8px 32px rgba(75, 87, 70, 0.2);
  --reveal-delay: 0s;
}

/* ============================================================
   2. Reset & base
   ============================================================ */

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

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-primary);
  color: var(--text-body);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

p {
  margin: 0 0 var(--space-md);
}

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

a {
  color: var(--accent-gold);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-gold-strong);
}

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

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

::selection {
  background: rgba(75, 87, 70, 0.18);
  color: var(--text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 5px;
  border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* Inline code (used in auth demo hint, editor hints) */
code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--accent-gold-dim);
  color: var(--accent-gold);
  padding: 0.15em 0.5em;
  border-radius: var(--radius-sm);
}

/* ============================================================
   3. Layout
   ============================================================ */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-narrow {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-2xl) 0;
  scroll-margin-top: calc(var(--nav-height) + 24px);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-lg);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-gold);
  margin-bottom: var(--space-sm);
}

.section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-gold));
}

.section-title {
  font-size: clamp(1.9rem, 3.6vw, 2.8rem);
  font-weight: 800;
  line-height: 1.15;
}

.section-description {
  color: var(--text-secondary);
  max-width: 420px;
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.7;
}

.accent {
  color: var(--accent-gold);
}

/* ============================================================
   4. Buttons
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.85rem 1.75rem;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition: translate var(--transition-base), box-shadow var(--transition-base),
    border-color var(--transition-base), color var(--transition-fast),
    background var(--transition-base);
}

.btn:disabled {
  opacity: 0.5;
  pointer-events: none;
}

.btn-primary {
  background: var(--gradient-gold);
  color: #FFFDFD;
}

.btn-primary:hover {
  color: #FFFDFD;
  box-shadow: var(--shadow-gold);
}

.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.btn-ghost:hover {
  color: var(--accent-gold);
  border-color: rgba(75, 87, 70, 0.28);
}

.btn-magnetic:hover {
  translate: 0 -2px;
}

.btn-magnetic:active {
  translate: 0 0;
}

/* ============================================================
   5. Navigation & footer
   ============================================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background var(--transition-base), border-color var(--transition-base),
    backdrop-filter var(--transition-base);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(255, 253, 253, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border-color);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-logo:hover {
  color: var(--text-primary);
}

.logo-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: var(--gradient-gold);
  color: #FFFDFD;
  border-radius: 10px;
  font-size: 1.05rem;
  font-weight: 900;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  position: relative;
  padding: 6px 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--accent-gold);
  transition: width var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-user {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px 6px 6px;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.nav-user:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
}

.nav-user-avatar {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  background: var(--gradient-gold);
  color: #FFFDFD;
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}

.nav-user-name {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Footer */

.footer {
  border-top: 1px solid var(--border-color);
  padding: var(--space-xl) 0;
  margin-top: var(--space-2xl);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer-text {
  color: var(--text-tertiary);
  font-size: 0.88rem;
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.88rem;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-gold);
}

/* ============================================================
   6. Hero (home)
   ============================================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(35, 35, 35, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(35, 35, 35, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 25%, transparent 78%);
  mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 25%, transparent 78%);
}

.hero-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  animation: orbFloat 18s ease-in-out infinite;
}

.orb-1 {
  width: 520px;
  height: 520px;
  top: -140px;
  right: -100px;
  background: radial-gradient(circle, rgba(75, 87, 70, 0.14), transparent 70%);
}

.orb-2 {
  width: 420px;
  height: 420px;
  bottom: -80px;
  left: -120px;
  background: radial-gradient(circle, rgba(75, 87, 70, 0.12), transparent 70%);
  animation-delay: -9s;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 860px;
  padding-top: var(--nav-height);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  background: rgba(30, 38, 26, 0.5);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--text-secondary);
}

.pulse-dot {
  position: relative;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  flex-shrink: 0;
}

.pulse-dot::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid var(--accent-green);
  animation: pulseRing 2.2s ease-out infinite;
}

.hero-title {
  margin: var(--space-xl) 0 var(--space-lg);
  font-size: clamp(2.5rem, 6vw, 4.4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.hero-title .line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.08em;
  margin-bottom: -0.08em;
}

.hero-title .line-inner {
  display: inline-block;
  transform: translateY(115%);
  animation: lineUp 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.hero-title .line:nth-child(2) .line-inner { animation-delay: 0.12s; }
.hero-title .line:nth-child(3) .line-inner { animation-delay: 0.24s; }

.hero-subtitle {
  max-width: 580px;
  margin-bottom: var(--space-xl);
  font-size: 1.08rem;
  line-height: 1.85;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero-interests {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-color);
}

.interest-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  background: rgba(30, 38, 26, 0.5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: translate var(--transition-base), border-color var(--transition-base),
    color var(--transition-fast), background var(--transition-base);
}

.interest-tag:hover {
  border-color: rgba(75, 87, 70, 0.28);
  color: var(--text-primary);
  background: var(--accent-gold-dim);
  translate: 0 -2px;
}

.tag-icon {
  font-size: 1rem;
  line-height: 1;
}

.scroll-indicator {
  position: absolute;
  bottom: 28px;
  left: 50%;
  translate: -50% 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.34em;
  color: var(--text-tertiary);
  pointer-events: none;
}

.scroll-line {
  position: relative;
  width: 1px;
  height: 44px;
  background: var(--border-strong);
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -60%;
  left: 0;
  width: 100%;
  height: 55%;
  background: var(--accent-gold);
  animation: scrollDrop 2.1s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}

/* ============================================================
   7. Category filter & post cards
   ============================================================ */

.category-filter {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}

.category-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  transition: translate var(--transition-base), border-color var(--transition-base),
    color var(--transition-fast), background var(--transition-base);
}

.category-chip:hover {
  color: var(--text-primary);
  border-color: rgba(75, 87, 70, 0.24);
  translate: 0 -2px;
}

.category-chip.active {
  background: var(--accent-gold-dim);
  border-color: rgba(75, 87, 70, 0.3);
  color: var(--accent-gold);
}

.chip-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.post-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: opacity 0.7s ease var(--reveal-delay),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1) var(--reveal-delay),
    translate var(--transition-base), box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.post-card:hover {
  translate: 0 -6px;
  border-color: rgba(75, 87, 70, 0.22);
  box-shadow: var(--shadow-card);
}

.post-card-image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-tertiary);
}

.post-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.post-card:hover .post-card-image img {
  transform: scale(1.06);
}

.post-card-category {
  position: absolute;
  top: 12px;
  left: 12px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 13px;
  background: rgba(255, 253, 253, 0.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.post-card-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-lg);
  flex: 1;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-tertiary);
}

.meta-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-tertiary);
  flex-shrink: 0;
}

.post-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.35;
  transition: color var(--transition-fast);
}

.post-card:hover .post-card-title {
  color: var(--accent-gold);
}

.post-card-excerpt {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.post-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding-top: var(--space-md);
  margin-top: auto;
  border-top: 1px solid var(--border-color);
}

.post-card-author {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.post-card-author-avatar {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  background: var(--gradient-gold);
  color: #FFFDFD;
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  flex-shrink: 0;
}

.post-card-author-name {
  font-size: 0.85rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.post-card-stats {
  display: flex;
  gap: var(--space-md);
  color: var(--text-tertiary);
  font-size: 0.82rem;
  flex-shrink: 0;
}

.post-card-stat {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

/* Featured card (first post on the "all" tab) */

.post-card.featured {
  grid-column: span 2;
}

.post-card.featured .post-card-image {
  aspect-ratio: 21 / 10;
}

.post-card.featured .post-card-title {
  font-size: 1.6rem;
}

.post-card.featured .post-card-excerpt {
  -webkit-line-clamp: 2;
}

/* ============================================================
   8. Empty state / spinner / toast
   ============================================================ */

.empty-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  background: var(--bg-secondary);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  line-height: 1;
}

.empty-state-title {
  margin-bottom: var(--space-xs);
  font-size: 1.3rem;
  font-weight: 700;
}

.empty-state-desc {
  color: var(--text-tertiary);
  font-size: 0.92rem;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border-strong);
  border-top-color: var(--accent-gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: min(360px, calc(100vw - 32px));
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: var(--bg-elevated);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.92rem;
  box-shadow: var(--shadow-card);
  animation: toastIn 0.32s cubic-bezier(0.22, 1, 0.36, 1);
}

.toast span:first-child {
  flex-shrink: 0;
}

.toast.success {
  border-color: rgba(75, 87, 70, 0.25);
}

.toast.success span:first-child {
  color: var(--accent-green);
}

.toast.error {
  border-color: rgba(192, 86, 74, 0.22);
}

.toast.error span:first-child {
  color: var(--accent-coral);
}

.toast.info span:first-child {
  color: var(--accent-gold);
}

.toast.removing {
  opacity: 0;
  transform: translateX(24px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

/* ============================================================
   9. Auth (login & register)
   ============================================================ */

.auth-page {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-height) + var(--space-xl)) var(--space-lg) var(--space-xl);
}

.auth-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.auth-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(35, 35, 35, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(35, 35, 35, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 35%, black 25%, transparent 80%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 35%, black 25%, transparent 80%);
}

.auth-bg-orb {
  position: absolute;
  width: 560px;
  height: 560px;
  top: -160px;
  right: -140px;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
  background: radial-gradient(circle, rgba(75, 87, 70, 0.15), transparent 70%);
  animation: orbFloat 20s ease-in-out infinite;
}

.auth-container {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  width: 100%;
  max-width: 1040px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.auth-branding {
  position: relative;
  padding: var(--space-2xl);
  border-right: 1px solid var(--border-color);
  background: var(--gradient-card);
  display: flex;
  flex-direction: column;
}

.auth-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  margin-bottom: var(--space-2xl);
}

.auth-logo:hover {
  color: var(--text-primary);
}

.auth-branding-content {
  margin-top: auto;
  margin-bottom: auto;
}

.auth-branding-title {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

.auth-branding-desc {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.98rem;
  margin-bottom: var(--space-xl);
}

.auth-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.auth-feature {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.auth-feature-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.auth-feature-title {
  font-size: 0.98rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.auth-feature-title,
.auth-feature-title ~ div {
  color: var(--text-primary);
}

.auth-feature-desc {
  font-size: 0.84rem;
  color: var(--text-tertiary);
  line-height: 1.6;
}

.auth-form-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl);
}

.auth-form-container {
  width: 100%;
  max-width: 380px;
}

.auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 4px;
  margin-bottom: var(--space-xl);
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
}

.auth-tab {
  padding: 0.65rem;
  border: none;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 600;
  transition: background var(--transition-base), color var(--transition-fast),
    box-shadow var(--transition-base);
}

.auth-tab:hover {
  color: var(--text-primary);
}

.auth-tab.active {
  background: var(--bg-elevated);
  color: var(--accent-gold);
  box-shadow: 0 4px 16px rgba(43, 57, 34, 0.14);
}

.auth-form {
  animation: fadeIn 0.35s ease;
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

.form-input:focus {
  outline: none;
  border-color: rgba(75, 87, 70, 0.3);
  box-shadow: 0 0 0 3px var(--accent-gold-dim);
}

select.form-input {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23a0a0a8' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

select.form-input option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.form-textarea {
  min-height: 90px;
  resize: vertical;
  line-height: 1.6;
}

.auth-submit {
  width: 100%;
  margin-top: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.auth-switch {
  text-align: center;
  font-size: 0.88rem;
  color: var(--text-tertiary);
}

.auth-switch a {
  color: var(--accent-gold);
  font-weight: 500;
}

.auth-demo-hint {
  margin-top: var(--space-xl);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-tertiary);
  border: 1px dashed rgba(75, 87, 70, 0.2);
  border-radius: var(--radius-md);
}

.auth-demo-hint-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.auth-demo-hint-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ============================================================
   10. Post page
   ============================================================ */

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 2000;
  width: 0;
  height: 3px;
  background: var(--gradient-gold);
  box-shadow: 0 0 12px rgba(75, 87, 70, 0.3);
}

.post-hero {
  padding: calc(var(--nav-height) + var(--space-2xl)) 0 var(--space-xl);
}

.post-hero-category {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 15px;
  margin-bottom: var(--space-md);
  background: var(--accent-gold-dim);
  border: 1px solid rgba(75, 87, 70, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: var(--accent-gold);
}

.post-hero-title {
  font-size: clamp(2rem, 5vw, 3.1rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-lg);
}

.post-hero-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  color: var(--text-tertiary);
  font-size: 0.88rem;
}

.post-hero-author {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: var(--space-xs);
}

.post-hero-author-avatar {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  background: var(--gradient-gold);
  color: #FFFDFD;
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  flex-shrink: 0;
}

.post-hero-cover {
  margin: var(--space-xl) 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.post-hero-cover img {
  width: 100%;
  max-height: 520px;
  object-fit: cover;
}

/* --- Article (markdown) typography --- */

.article-content {
  font-size: 1.02rem;
  line-height: 1.95;
  color: var(--text-body);
}

.article-content > *:first-child {
  margin-top: 0;
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4 {
  color: var(--text-primary);
  margin: 2em 0 0.7em;
  line-height: 1.3;
}

.article-content h1 {
  font-size: 1.75rem;
}

.article-content h2 {
  font-size: 1.45rem;
  padding-bottom: 0.4em;
  border-bottom: 1px solid var(--border-color);
}

.article-content h3 {
  font-size: 1.2rem;
}

.article-content h4 {
  font-size: 1.05rem;
}

.article-content p {
  margin: 0 0 1.2em;
}

.article-content a {
  text-decoration: underline;
  text-decoration-color: rgba(75, 87, 70, 0.24);
  text-underline-offset: 3px;
}

.article-content strong {
  color: var(--text-primary);
  font-weight: 700;
}

.article-content blockquote {
  margin: 1.6em 0;
  padding: var(--space-md) var(--space-lg);
  background: var(--accent-gold-dim);
  border-left: 3px solid var(--accent-gold);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--accent-gold-strong);
}

.article-content blockquote p {
  margin: 0;
}

.article-content ul,
.article-content ol {
  margin: 0 0 1.2em;
  padding-left: 1.5em;
}

.article-content li {
  margin-bottom: 0.5em;
}

.article-content ul li::marker {
  color: var(--accent-gold);
}

.article-content ol li::marker {
  color: var(--accent-gold);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.article-content pre {
  margin: 1.6em 0;
  padding: var(--space-lg);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow-x: auto;
  line-height: 1.7;
}

.article-content pre code {
  background: none;
  padding: 0;
  color: var(--text-body);
  font-size: 0.88rem;
}

.article-content img {
  margin: 1.6em auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.article-content hr {
  margin: 2.4em auto;
  width: 120px;
  border: none;
  border-top: 1px solid var(--border-strong);
}

/* --- Engagement bar --- */

.engagement-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.engagement-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: translate var(--transition-base), border-color var(--transition-base),
    color var(--transition-fast), background var(--transition-base);
}

.engagement-btn:hover {
  color: var(--text-primary);
  border-color: rgba(75, 87, 70, 0.26);
  translate: 0 -2px;
}

.engagement-btn svg {
  flex-shrink: 0;
}

.engagement-btn.liked {
  color: var(--accent-coral);
  border-color: rgba(192, 86, 74, 0.3);
  background: rgba(192, 86, 74, 0.08);
}

/* --- Comments --- */

.comments-section {
  margin-top: var(--space-2xl);
  scroll-margin-top: calc(var(--nav-height) + 24px);
}

.comments-header {
  margin-bottom: var(--space-lg);
}

.comments-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.4rem;
  font-weight: 700;
}

.comments-count {
  display: inline-grid;
  place-items: center;
  min-width: 28px;
  height: 28px;
  padding: 0 8px;
  background: var(--accent-gold-dim);
  border: 1px solid rgba(75, 87, 70, 0.2);
  border-radius: var(--radius-full);
  color: var(--accent-gold);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
}

.comment-form {
  margin-bottom: var(--space-xl);
}

.comment-form-textarea:focus {
  outline: none;
  border-color: rgba(75, 87, 70, 0.3);
}

.comment-form-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--space-sm);
}

.comment-list {
  display: flex;
  flex-direction: column;
}

.comment-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--border-color);
}

.comment-item:last-child {
  border-bottom: none;
}

.comment-avatar {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--accent-gold);
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}

.comment-body {
  flex: 1;
  min-width: 0;
}

.comment-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.comment-author {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
}

.comment-time {
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.comment-text {
  margin: var(--space-xs) 0 var(--space-sm);
  color: var(--text-body);
  line-height: 1.8;
  word-break: break-word;
  white-space: pre-wrap;
}

.comment-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.comment-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  margin: -4px -8px;  /* expand hit area without shifting layout */
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-tertiary);
  font-family: var(--font-body);
  font-size: 0.82rem;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.comment-action:hover {
  color: var(--accent-gold);
}

.comment-action.liked {
  color: var(--accent-coral);
}

/* ============================================================
   11. Editor page
   ============================================================ */

.editor-page {
  padding: calc(var(--nav-height) + var(--space-xl)) 0 var(--space-2xl);
}

.editor-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}

.editor-title {
  font-size: 2rem;
  font-weight: 800;
}

.editor-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: var(--space-xl);
  align-items: start;
}

.editor-main {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  min-width: 0;
}

.editor-title-input {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.editor-title-input::placeholder {
  color: var(--text-tertiary);
  font-weight: 500;
}

.editor-title-input:focus {
  outline: none;
  border-color: rgba(75, 87, 70, 0.3);
  box-shadow: 0 0 0 3px var(--accent-gold-dim);
}

.editor-content-input {
  width: 100%;
  min-height: 440px;
  padding: var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-body);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.85;
  resize: vertical;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.editor-content-input::placeholder {
  color: var(--text-tertiary);
}

.editor-content-input:focus {
  outline: none;
  border-color: rgba(75, 87, 70, 0.3);
  box-shadow: 0 0 0 3px var(--accent-gold-dim);
}

.editor-preview {
  padding: var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.editor-preview-title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-gold);
}

.editor-preview-title::before {
  content: '';
  width: 18px;
  height: 1px;
  background: var(--accent-gold);
}

.editor-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  position: sticky;
  top: calc(var(--nav-height) + var(--space-md));
}

.editor-panel {
  padding: var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.editor-panel-title {
  margin-bottom: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-tertiary);
}

/* ============================================================
   12. About page
   ============================================================ */

.about-hero {
  padding-top: calc(var(--nav-height) + var(--space-xl));
  text-align: center;
}

.about-hero .section-label {
  justify-content: center;
}

.about-hero .section-label::after {
  content: '';
  width: 24px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent-gold), transparent);
}

.about-hero-title {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  margin-bottom: var(--space-md);
}

.about-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  color: var(--accent-gold);
  margin-bottom: var(--space-lg);
}

.about-hero-desc {
  max-width: 640px;
  margin: 0 auto;
  color: var(--text-secondary);
  line-height: 1.9;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
}

.about-card {
  padding: var(--space-xl) var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: translate var(--transition-base), border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.about-card:hover {
  translate: 0 -4px;
  border-color: rgba(75, 87, 70, 0.22);
  box-shadow: var(--shadow-card);
}

.about-card-icon {
  font-size: 2.1rem;
  margin-bottom: var(--space-sm);
  line-height: 1;
}

.about-card-title {
  margin-bottom: var(--space-xs);
  font-size: 1.05rem;
  font-weight: 700;
}

.about-card-desc {
  font-size: 0.86rem;
  color: var(--text-tertiary);
  line-height: 1.7;
}

.about-links {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* ============================================================
   13. Custom cursor & reveal animations
   ============================================================ */

.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--accent-gold);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
}

.cursor-outline {
  position: fixed;
  top: 0;
  left: 0;
  width: 32px;
  height: 32px;
  border: 1px solid rgba(75, 87, 70, 0.28);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  opacity: 0.5;
  transform: translate(-50%, -50%);
  transition: width 0.25s ease, height 0.25s ease, border-color 0.25s ease,
    background 0.25s ease, opacity 0.3s ease;
}

.cursor-outline.hover {
  width: 52px;
  height: 52px;
  border-color: var(--accent-gold);
  background: rgba(75, 87, 70, 0.05);
}

/* Only hide the native cursor once ui.js has actually created the custom
   cursor (html.custom-cursor-active is added at the end of initCursor) */
@media (pointer: fine) {
  html.custom-cursor-active body,
  html.custom-cursor-active a,
  html.custom-cursor-active button,
  html.custom-cursor-active [data-cursor] {
    cursor: none;
  }
}

@media (pointer: coarse) {
  .cursor-dot,
  .cursor-outline {
    display: none;
  }
}

/* Scroll-reveal (elements get .visible from ui.js IntersectionObserver) */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease var(--reveal-delay),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1) var(--reveal-delay);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { --reveal-delay: 0.08s; }
.reveal-delay-2 { --reveal-delay: 0.16s; }
.reveal-delay-3 { --reveal-delay: 0.24s; }
.reveal-delay-4 { --reveal-delay: 0.32s; }

/* Keyframes */

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes pulseRing {
  0% {
    transform: scale(0.6);
    opacity: 1;
  }
  100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

@keyframes orbFloat {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(-30px, 24px) scale(1.06);
  }
}

@keyframes lineUp {
  to { transform: translateY(0); }
}

@keyframes scrollDrop {
  0% { top: -60%; }
  100% { top: 110%; }
}

/* ============================================================
   14. Responsive & motion preferences
   ============================================================ */

@media (max-width: 960px) {
  .nav-links {
    display: none;
  }

  .auth-container {
    grid-template-columns: 1fr;
  }

  .auth-branding {
    display: none;
  }

  .auth-form-wrap {
    padding: var(--space-xl);
  }

  .editor-form {
    grid-template-columns: 1fr;
  }

  .editor-sidebar {
    position: static;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .post-card.featured {
    grid-column: span 1;
  }

  .post-card.featured .post-card-image {
    aspect-ratio: 16 / 9;
  }

  .post-card.featured .post-card-title {
    font-size: 1.25rem;
  }
}

@media (max-width: 640px) {
  :root {
    --nav-height: 60px;
  }

  .container,
  .container-narrow {
    padding: 0 var(--space-md);
  }

  .posts-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: calc(100vh - 40px);
  }

  .hero-interests {
    gap: var(--space-xs);
  }

  .editor-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .engagement-bar {
    gap: var(--space-xs);
  }

  .engagement-btn {
    padding: 9px 15px;
    font-size: 0.85rem;
  }

  .toast-container {
    left: 16px;
    right: 16px;
    bottom: 16px;
  }

  .comment-item {
    gap: var(--space-sm);
  }

  .auth-page {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }
}

/* Respect users who prefer less motion */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .hero-title .line-inner {
    transform: none;
  }
}