/* ECS Rails demo — a hand-written design system. No framework.
   Palette, spacing, and type live in custom properties; everything else
   composes from them. Light and dark via prefers-color-scheme. */

:root {
  /* palette — a calm indigo/slate with a warm accent */
  --bg:        #f7f8fa;
  --surface:   #ffffff;
  --surface-2: #f1f3f7;
  --border:    #e3e7ee;
  --text:      #1c2230;
  --muted:     #5c6675;
  --faint:     #8b94a3;
  --brand:     #4f46e5;
  --brand-ink: #ffffff;
  --brand-soft:#eef0fe;
  --accent:    #e11d73;
  --ok:        #0f9d63;
  --ok-soft:   #e2f5ec;
  --warn:      #b7791f;
  --warn-soft: #fbf1dc;
  --danger:    #d9432f;

  --radius:   14px;
  --radius-s: 9px;
  --gap:      1rem;
  --pad:      1.25rem;
  --shadow:   0 1px 2px rgba(20,25,40,.05), 0 6px 20px -8px rgba(20,25,40,.14);
  --shadow-lg:0 12px 40px -12px rgba(20,25,40,.28);
  --maxw:     880px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
          "Apple Color Emoji", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #0e1118;
    --surface:   #161b25;
    --surface-2: #1d232f;
    --border:    #29313f;
    --text:      #e7ebf2;
    --muted:     #9aa4b4;
    --faint:     #6b7686;
    --brand:     #7c78ff;
    --brand-ink: #0e1118;
    --brand-soft:#20223c;
    --accent:    #f472b6;
    --ok:        #34d399;
    --ok-soft:   #123027;
    --warn:      #e9b949;
    --warn-soft: #33290f;
    --danger:    #f87171;
    --shadow:    0 1px 2px rgba(0,0,0,.3), 0 8px 24px -10px rgba(0,0,0,.6);
    --shadow-lg: 0 16px 48px -12px rgba(0,0,0,.7);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

/* --- layout ------------------------------------------------------------- */

.site-nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-nav__inner {
  max-width: var(--maxw); margin: 0 auto; padding: .75rem 1.25rem;
  display: flex; align-items: center; gap: 1.25rem;
}
.brand { display: flex; align-items: center; gap: .55rem; font-weight: 700;
         color: var(--text); font-size: 1.05rem; letter-spacing: -.01em; }
.brand:hover { text-decoration: none; }
.brand__mark {
  width: 1.6rem; height: 1.6rem; border-radius: 7px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #fff; font-size: .95rem; font-weight: 800;
}
.site-nav__links { display: flex; gap: .25rem; margin-left: auto; flex-wrap: wrap; }
.site-nav__links a {
  color: var(--muted); font-weight: 550; font-size: .93rem;
  padding: .4rem .7rem; border-radius: 8px;
}
.site-nav__links a:hover { color: var(--text); background: var(--surface-2); text-decoration: none; }
.site-nav__links a[aria-current="page"] { color: var(--brand); background: var(--brand-soft); }

main { max-width: var(--maxw); margin: 0 auto; padding: 2rem 1.25rem 4rem; }

.page-head { margin: 0 0 1.5rem; }
.page-head h1 { margin: 0; font-size: 1.7rem; letter-spacing: -.02em; }
.page-head p { margin: .35rem 0 0; color: var(--muted); }
.page-head--row { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; }

h1, h2, h3 { line-height: 1.25; letter-spacing: -.01em; }

/* --- cards -------------------------------------------------------------- */

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: var(--pad);
}
.stack { display: flex; flex-direction: column; gap: var(--gap); }
.stack--tight { gap: .6rem; }

.card-link { display: block; color: inherit; transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease; }
.card-link:hover { text-decoration: none; transform: translateY(-2px);
                   box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--brand) 40%, var(--border)); }

.post-card h2 { margin: 0 0 .25rem; font-size: 1.2rem; }
.post-card h2 a { color: var(--text); }
.post-card__excerpt { margin: .5rem 0 0; color: var(--muted); }

/* --- meta / bylines ----------------------------------------------------- */

.meta { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap;
        color: var(--faint); font-size: .87rem; }
.meta .dot { width: 3px; height: 3px; border-radius: 50%; background: currentColor; opacity: .6; }
.byline { display: inline-flex; align-items: center; gap: .45rem; color: var(--muted); font-weight: 550; }

.avatar {
  width: 1.6rem; height: 1.6rem; border-radius: 50%; flex: none;
  display: grid; place-items: center; font-size: .72rem; font-weight: 700; color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  background-size: cover; background-position: center;
}
.avatar--lg { width: 3.2rem; height: 3.2rem; font-size: 1.2rem; }

/* --- badges ------------------------------------------------------------- */

.badge {
  display: inline-flex; align-items: center; gap: .3rem;
  font-size: .74rem; font-weight: 650; letter-spacing: .01em;
  padding: .18rem .5rem; border-radius: 999px; line-height: 1.4;
  background: var(--surface-2); color: var(--muted); border: 1px solid var(--border);
}
.badge--mod    { background: var(--brand-soft); color: var(--brand); border-color: transparent; }
.badge--admin  { background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent); border-color: transparent; }
.badge--pub    { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.badge--draft  { background: var(--warn-soft); color: var(--warn); border-color: transparent; }

/* --- buttons ------------------------------------------------------------ */

.btn {
  display: inline-flex; align-items: center; gap: .4rem; cursor: pointer;
  font: inherit; font-weight: 600; font-size: .92rem; line-height: 1;
  padding: .6rem .95rem; border-radius: var(--radius-s);
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  transition: background .12s ease, border-color .12s ease, transform .06s ease;
}
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--brand); color: var(--brand-ink); border-color: transparent; }
.btn--primary:hover { background: color-mix(in srgb, var(--brand) 88%, #000); }
.btn--ghost { background: transparent; }
.btn--sm { padding: .4rem .65rem; font-size: .85rem; }
.btn--danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 35%, var(--border)); }
.btn--danger:hover { background: color-mix(in srgb, var(--danger) 10%, transparent); }
.btn-row { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; }

/* forms use button too */
button.btn { -webkit-appearance: none; appearance: none; }
form.inline { display: inline; }

/* --- forms -------------------------------------------------------------- */

.field { margin: 0 0 1.1rem; }
.field label { display: block; font-weight: 600; font-size: .9rem; margin: 0 0 .35rem; }
.field .hint { color: var(--faint); font-size: .82rem; margin: .3rem 0 0; }
.input, .textarea, .select {
  width: 100%; font: inherit; color: var(--text);
  padding: .6rem .7rem; border-radius: var(--radius-s);
  border: 1px solid var(--border); background: var(--surface-2);
  transition: border-color .12s ease, box-shadow .12s ease;
}
.input:focus, .textarea:focus, .select:focus {
  outline: none; border-color: var(--brand);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 22%, transparent); background: var(--surface);
}
.textarea { resize: vertical; min-height: 7rem; }
.check { display: flex; align-items: center; gap: .55rem; font-weight: 550; }
.check input { width: 1.05rem; height: 1.05rem; accent-color: var(--brand); }

.errors {
  border: 1px solid color-mix(in srgb, var(--danger) 40%, var(--border));
  background: color-mix(in srgb, var(--danger) 8%, transparent);
  border-radius: var(--radius-s); padding: .8rem 1rem; margin: 0 0 1.2rem;
}
.errors strong { color: var(--danger); }
.errors ul { margin: .4rem 0 0; padding-left: 1.1rem; color: var(--text); }
.field--invalid .input, .field--invalid .textarea { border-color: var(--danger); }

/* --- flash -------------------------------------------------------------- */

.flash { max-width: var(--maxw); margin: 1rem auto -0.5rem; padding: 0 1.25rem; }
.flash__msg {
  padding: .7rem 1rem; border-radius: var(--radius-s); font-weight: 550;
  border: 1px solid transparent; display: flex; align-items: center; gap: .5rem;
}
.flash__msg--notice { background: var(--ok-soft); color: var(--ok);
                      border-color: color-mix(in srgb, var(--ok) 30%, transparent); }
.flash__msg--alert  { background: color-mix(in srgb, var(--danger) 10%, transparent); color: var(--danger);
                      border-color: color-mix(in srgb, var(--danger) 35%, transparent); }

/* --- content prose ------------------------------------------------------ */

.prose { color: var(--text); }
.prose p { margin: 0 0 1rem; }
.article__body { font-size: 1.05rem; }

/* --- misc --------------------------------------------------------------- */

.empty { text-align: center; color: var(--muted); padding: 3rem 1rem;
         border: 1px dashed var(--border); border-radius: var(--radius); background: var(--surface); }
.count { font-variant-numeric: tabular-nums; }
.back { display: inline-flex; align-items: center; gap: .3rem; color: var(--muted);
        font-size: .9rem; font-weight: 550; margin: 0 0 1rem; }
.back:hover { color: var(--text); text-decoration: none; }
.divider { height: 1px; background: var(--border); border: 0; margin: 1.75rem 0; }
kbd, code { font-family: var(--mono); font-size: .88em; background: var(--surface-2);
            padding: .1rem .35rem; border-radius: 5px; border: 1px solid var(--border); }

.grid { display: grid; gap: var(--gap); }
@media (min-width: 620px) { .grid--2 { grid-template-columns: 1fr 1fr; } }

.section-title { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em;
                 color: var(--faint); font-weight: 700; margin: 0 0 .75rem; }

/* comments */
.comment { display: flex; gap: .75rem; padding: 1rem 0; border-top: 1px solid var(--border); }
.comment__body { flex: 1; }
.comment__body p { margin: .25rem 0 .5rem; }

/* profile header */
.profile { display: flex; align-items: center; gap: 1rem; }
.profile__meta { flex: 1; }
.profile__name { margin: 0; font-size: 1.4rem; }
.profile__badges { display: flex; gap: .4rem; margin-top: .35rem; flex-wrap: wrap; }

/* drafts */
.card.is-draft { border-style: dashed; border-color: color-mix(in srgb, var(--warn) 45%, var(--border)); }
.notice-draft {
  margin: 1rem 0 0; padding: .7rem .9rem; border-radius: var(--radius-s);
  background: var(--warn-soft); color: var(--warn); font-size: .9rem;
  border: 1px solid color-mix(in srgb, var(--warn) 30%, transparent);
}
.notice-draft strong { color: var(--warn); }

/* reset banner */
.reset-banner {
  display: flex; align-items: center; gap: .6rem; flex-wrap: wrap;
  max-width: var(--maxw); margin: 0 auto; padding: .55rem 1.25rem;
  font-size: .87rem; color: var(--muted);
}
.reset-banner strong { color: var(--text); font-variant-numeric: tabular-nums; }
.reset-banner__pulse {
  width: .5rem; height: .5rem; border-radius: 50%; flex: none;
  background: var(--accent); box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 60%, transparent);
  animation: reset-pulse 2s infinite;
}
@keyframes reset-pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 55%, transparent); }
  70%  { box-shadow: 0 0 0 .5rem transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
@media (prefers-reduced-motion: reduce) { .reset-banner__pulse { animation: none; } }

/* footer */
.site-footer { border-top: 1px solid var(--border); margin-top: 2rem; }
.site-footer__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 1.25rem 1.25rem 2rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  flex-wrap: wrap; color: var(--faint); font-size: .85rem;
}
.site-footer strong { color: var(--muted); }
.site-footer__links { display: inline-flex; align-items: center; gap: .6rem; }
.site-footer__links a { color: var(--muted); font-weight: 550; }
.site-footer__links a:hover { color: var(--brand); }