/* =========================================================
   Morton Tech Tips — design tokens
   ========================================================= */
:root{
  /* color */
  --bg:            #F6F4EF;
  --panel:         #FFFFFF;
  --panel-border:  #E4E0D6;
  --ink:           #1B2430;
  --ink-soft:      #4A5468;
  --ink-faint:     #8891A0;

  --accent:        #2D6CDF;   /* signal blue */
  --accent-ink:    #1949A8;
  --accent-bg:     #E8F0FE;

  --amber:         #E8A33D;   /* pinned / attention */
  --amber-bg:      #FBEDD6;

  --green:         #3FA66E;   /* solved */
  --green-bg:      #E4F4EC;

  --slate-panel:   #1B2430;   /* header / footer */
  --slate-panel-2: #25304A;

  /* type */
  --font-display: "Space Grotesk", "Segoe UI", sans-serif;
  --font-body:    "Inter", "Segoe UI", sans-serif;
  --font-mono:    "JetBrains Mono", "Consolas", monospace;

  /* layout */
  --radius:    10px;
  --radius-sm: 6px;
  --maxw:      1180px;
  --shadow:    0 1px 2px rgba(27,36,48,0.06), 0 6px 16px rgba(27,36,48,0.06);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3{ font-family: var(--font-display); color: var(--ink); margin: 0; }
a{ color: var(--accent-ink); text-decoration: none; }
a:hover{ text-decoration: underline; }
ul,ol{ margin:0; padding:0; list-style:none; }
button{ font-family: inherit; cursor:pointer; }
input,select,textarea{ font-family: inherit; }

.skiplink a{
  position:absolute; left:-999px; top:0; background:var(--ink); color:#fff; padding:8px 14px; z-index:200;
}
.skiplink a:focus{ left:8px; top:8px; }

:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* =========================================================
   Buttons
   ========================================================= */
.btn{
  display:inline-flex; align-items:center; gap:6px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  border: 1px solid transparent;
  transition: background .15s ease, border-color .15s ease, transform .05s ease;
}
.btn:active{ transform: translateY(1px); }
.btn-primary{ background: var(--accent); color:#fff; }
.btn-primary:hover{ background: var(--accent-ink); text-decoration:none; }
.btn-outline{ background: transparent; border-color: var(--panel-border); color: var(--ink); }
.btn-outline:hover{ border-color: var(--accent); color: var(--accent-ink); text-decoration:none; }
.btn-ghost{ background: rgba(255,255,255,0.08); color:#fff; border-color: rgba(255,255,255,0.18); }
.btn-ghost:hover{ background: rgba(255,255,255,0.16); text-decoration:none; }
.btn-text{ background:none; border:none; color: var(--accent-ink); font-weight:600; padding:0; text-decoration: underline; }

/* =========================================================
   Header
   ========================================================= */
.site-header{
  background: var(--slate-panel);
  position: sticky; top:0; z-index: 50;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-inner{
  max-width: var(--maxw); margin:0 auto;
  display:flex; align-items:center; gap:24px;
  padding: 12px 24px;
}
.brand{ display:flex; align-items:center; gap:8px; color:#fff; flex-shrink:0; }
.brand:hover{ text-decoration:none; }
.brand-mark{ color: var(--accent); display:flex; }
.brand-text{ font-family: var(--font-display); font-weight:700; font-size:18px; letter-spacing:-0.01em; }

.main-nav{ display:flex; gap:4px; flex-shrink:0; }
.nav-link{
  color: rgba(255,255,255,0.72); font-weight:600; font-size:14px;
  padding: 8px 12px; border-radius: var(--radius-sm);
}
.nav-link:hover{ color:#fff; text-decoration:none; background: rgba(255,255,255,0.06); }
.nav-link.is-active{ color:#fff; background: rgba(255,255,255,0.1); }

.header-actions{ display:flex; align-items:center; gap:10px; margin-left:auto; }

.search-box{
  display:flex; align-items:center; gap:8px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  color: rgba(255,255,255,0.6);
  width: 260px;
}
.search-box input{
  background:none; border:none; color:#fff; font-size:14px; width:100%;
}
.search-box input::placeholder{ color: rgba(255,255,255,0.45); }
.search-box input:focus{ outline:none; }

.user-chip{ display:flex; align-items:center; gap:8px; color:#fff; font-size:14px; }
.user-chip img{ border-radius:50%; }

/* =========================================================
   Hero
   ========================================================= */
.hero{
  background: linear-gradient(180deg, var(--slate-panel) 0%, var(--slate-panel) 62%, var(--bg) 62%);
  color:#fff;
  padding: 48px 24px 0;
}
.hero-inner{ max-width: var(--maxw); margin:0 auto; padding-bottom: 36px; max-width: 720px; }
.eyebrow{
  font-family: var(--font-mono); font-size:12px; letter-spacing:0.06em; text-transform:uppercase;
  color: var(--green); margin:0 0 14px; display:flex; align-items:center; gap:6px;
}
.eyebrow::before{ content:""; width:7px; height:7px; border-radius:50%; background: var(--green); display:inline-block; }
.hero h1{ font-size: clamp(28px, 4vw, 40px); line-height:1.15; font-weight:700; color:#fff; margin-bottom:14px; }
.hero-sub{ color: rgba(255,255,255,0.7); font-size:16px; max-width:560px; margin: 0 0 22px; }
.hero-actions{ display:flex; gap:10px; }

.hero-stats{
  max-width: var(--maxw); margin: 0 auto;
  display:flex; gap:14px;
  padding: 0 24px;
  transform: translateY(28px);
}
.stat{
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 22px;
  display:flex; flex-direction:column; gap:2px;
}
.stat-num{ font-family: var(--font-display); font-size:26px; font-weight:700; color: var(--ink); }
.stat-label{ font-size:13px; color: var(--ink-faint); }

/* =========================================================
   Layout grid
   ========================================================= */
.layout{
  max-width: var(--maxw); margin:0 auto;
  display:grid; grid-template-columns: 260px 1fr;
  gap: 24px;
  padding: 64px 24px 60px;
}

/* Sidebar */
.sidebar{ display:flex; flex-direction:column; gap:18px; }
.panel{
  background: var(--panel);
  border:1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 16px;
}
.panel-title{
  font-size:13px; text-transform:uppercase; letter-spacing:0.05em;
  color: var(--ink-faint); margin-bottom:10px; font-family: var(--font-body); font-weight:700;
}
.category-list{ display:flex; flex-direction:column; gap:2px; }
.cat-btn{
  width:100%; display:flex; align-items:center; gap:9px;
  background:none; border:none; text-align:left;
  padding:8px 8px; border-radius: var(--radius-sm);
  font-size:14px; color: var(--ink-soft); font-weight:500;
}
.cat-btn:hover{ background: var(--bg); color: var(--ink); }
.cat-btn.is-active{ background: var(--accent-bg); color: var(--accent-ink); font-weight:600; }
.dot{ width:8px; height:8px; border-radius:50%; flex-shrink:0; background: var(--ink-faint); }
.dot-all{ background: var(--ink-faint); }
.dot-windows{ background:#2D6CDF; }
.dot-mac{ background:#8891A0; }
.dot-network{ background:#3FA66E; }
.dot-software{ background:#E8A33D; }
.dot-hardware{ background:#C2554A; }
.dot-other{ background:#9B7FD1; }

.ranked-list{ display:flex; flex-direction:column; gap:10px; counter-reset: rank; }
.ranked-list li{
  counter-increment: rank;
  display:flex; gap:10px; font-size:13.5px;
}
.ranked-list li::before{
  content: counter(rank);
  font-family: var(--font-mono); color: var(--accent); font-weight:600;
  flex-shrink:0; width:16px;
}
.ranked-list a{ color: var(--ink); }
.ranked-list a:hover{ color: var(--accent-ink); }

.link-list{ display:flex; flex-direction:column; gap:8px; }
.link-list a{ color: var(--ink); font-size:14px; }
.link-list a:hover{ color: var(--accent-ink); }

/* =========================================================
   Feed
   ========================================================= */
.feed-toolbar{
  display:flex; align-items:center; justify-content:space-between;
  margin-bottom:16px; flex-wrap:wrap; gap:12px;
}
.filter-pills{ display:flex; gap:6px; }
.pill{
  background: var(--panel); border:1px solid var(--panel-border);
  border-radius: 999px; padding:7px 14px; font-size:13px; font-weight:600; color: var(--ink-soft);
}
.pill:hover{ border-color: var(--accent); color: var(--accent-ink); }
.pill.is-active{ background: var(--ink); color:#fff; border-color: var(--ink); }

.auth-notice{
  background: var(--amber-bg); border:1px solid #F0D9AE; color:#7A5614;
  border-radius: var(--radius-sm); padding:10px 14px; font-size:13.5px; margin-bottom:16px;
}

.thread-list{ display:flex; flex-direction:column; gap:12px; }

.thread-card{
  background: var(--panel);
  border:1px solid var(--panel-border);
  border-left: 4px solid var(--ink-faint);
  border-radius: var(--radius);
  padding: 16px 18px;
  display:flex; flex-direction:column; gap:8px;
  cursor:pointer;
  transition: box-shadow .15s ease, border-color .15s ease;
}
.thread-card:hover{ box-shadow: var(--shadow); }
.thread-card.status-solved{ border-left-color: var(--green); }
.thread-card.status-pinned{ border-left-color: var(--amber); }
.thread-card.status-open{ border-left-color: var(--accent); }

.thread-top{ display:flex; align-items:flex-start; justify-content:space-between; gap:12px; }
.thread-title{ font-family: var(--font-display); font-size:16px; font-weight:600; color: var(--ink); }
.badge{
  font-family: var(--font-mono); font-size:11px; font-weight:500;
  padding:3px 8px; border-radius:999px; flex-shrink:0; text-transform:uppercase; letter-spacing:0.03em;
}
.badge-solved{ background: var(--green-bg); color:#1F6B45; }
.badge-pinned{ background: var(--amber-bg); color:#8A5E14; }
.badge-open{ background: var(--accent-bg); color: var(--accent-ink); }

.thread-excerpt{ color: var(--ink-soft); font-size:14px; overflow:hidden; text-overflow:ellipsis; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; }

.thread-meta{ display:flex; align-items:center; gap:14px; font-size:12.5px; color: var(--ink-faint); }
.thread-meta .cat-tag{ font-family: var(--font-mono); color: var(--ink-soft); }
.thread-meta .meta-sep{ opacity:0.5; }

.empty-state{ text-align:center; color: var(--ink-faint); padding: 40px 0; }

/* skeleton loading */
.skeleton-line{
  height:14px; border-radius:4px;
  background: linear-gradient(90deg, #ECE9E1 25%, #F4F1EA 37%, #ECE9E1 63%);
  background-size: 400% 100%;
  animation: shimmer 1.4s infinite;
  width:100%;
}
@keyframes shimmer{ 0%{background-position:100% 0;} 100%{background-position:0 0;} }
.thread-card.skeleton{ gap:10px; cursor:default; }
.thread-card.skeleton:hover{ box-shadow:none; }

/* =========================================================
   Footer
   ========================================================= */
.site-footer{ background: var(--slate-panel); color: rgba(255,255,255,0.55); padding: 22px 24px; font-size:13px; }
.footer-inner{ max-width: var(--maxw); margin:0 auto; display:flex; gap:10px; align-items:center; }
.footer-sep{ opacity:0.4; }
.footer-inner a{ color: rgba(255,255,255,0.65); }
.footer-inner a:hover{ color:#fff; }

/* =========================================================
   Modal / Dialog
   ========================================================= */
.modal{
  border:none; border-radius: var(--radius); padding:0;
  width: min(520px, 92vw);
  box-shadow: 0 20px 60px rgba(27,36,48,0.25);
}
.modal-wide{ width: min(680px, 92vw); }
.modal::backdrop{ background: rgba(27,36,48,0.5); }

.modal-header{
  display:flex; align-items:center; justify-content:space-between;
  padding: 18px 22px; border-bottom:1px solid var(--panel-border);
}
.modal-header h2{ font-size:18px; }
.modal-close{ background:none; border:none; font-size:16px; color: var(--ink-faint); padding:4px; }
.modal-close:hover{ color: var(--ink); }

.modal-form{ padding: 20px 22px; display:flex; flex-direction:column; gap:16px; }
.field{ display:flex; flex-direction:column; gap:6px; font-size:13.5px; font-weight:600; color: var(--ink-soft); }
.field input, .field select, .field textarea{
  border:1px solid var(--panel-border); border-radius: var(--radius-sm);
  padding:9px 11px; font-size:14px; color: var(--ink); resize: vertical;
}
.field input:focus, .field select:focus, .field textarea:focus{ outline:none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-bg); }
.field-hint{ font-size:12.5px; color: var(--ink-faint); margin:0; }
.modal-actions{ display:flex; justify-content:flex-end; gap:10px; margin-top:4px; }

/* Thread detail inside modal */
.thread-detail{ padding: 20px 22px; max-height:70vh; overflow-y:auto; }
.thread-detail-body{ color: var(--ink-soft); white-space:pre-wrap; margin: 6px 0 18px; line-height:1.6; }
.thread-detail-meta{ display:flex; gap:10px; align-items:center; font-size:12.5px; color: var(--ink-faint); margin-bottom:14px; }
.reply-list{ display:flex; flex-direction:column; gap:12px; margin: 16px 0; }
.reply-card{ background: var(--bg); border-radius: var(--radius-sm); padding:12px 14px; }
.reply-author{ font-weight:700; font-size:13px; color: var(--ink); }
.reply-body{ font-size:13.5px; color: var(--ink-soft); margin-top:4px; white-space:pre-wrap; }
.reply-form{ display:flex; flex-direction:column; gap:10px; border-top:1px solid var(--panel-border); padding-top:16px; }
.reply-form textarea{ border:1px solid var(--panel-border); border-radius: var(--radius-sm); padding:9px 11px; font-size:14px; resize:vertical; }
.mark-solved-row{ display:flex; gap:8px; align-items:center; margin-top:10px; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 920px){
  .layout{ grid-template-columns: 1fr; }
  .main-nav{ display:none; }
  .search-box{ width:160px; }
  .hero-stats{ flex-wrap:wrap; transform: translateY(20px); }
}
@media (max-width: 560px){
  .header-inner{ flex-wrap:wrap; row-gap:10px; }
  .header-actions{ width:100%; }
  .search-box{ flex:1; width:auto; }
  .hero{ padding-top:32px; }
  .hero-stats{ transform:none; margin-top:18px; }
  .layout{ padding-top:36px; }
}