/* ═══════════════════════════════════════════════════════════════════
   TheAdminStack — Main Stylesheet
   Theme: Ink Wash · Minimal Modern
   ═══════════════════════════════════════════════════════════════════ */

/* ── Variables ─────────────────────────────────────────────────────── */
:root {
  --bg:           #0d0f12;
  --bg-2:         #13161b;
  --bg-3:         #1a1e25;
  --surface:      #1e232c;
  --surface-2:    #252b35;
  --border:       #2a303c;
  --border-light: #333b48;

  --ink:          #f0ede8;
  --ink-2:        #b8b4ae;
  --ink-3:        #7a7670;
  --ink-4:        #4e4c49;

  --accent:       #5a8f87;
  --accent-light: #7ab3aa;
  --accent-dim:   rgba(90, 143, 135, 0.12);
  --accent-glow:  rgba(90, 143, 135, 0.06);

  --red:          #c0614a;
  --yellow:       #b89a5a;
  --green:        #5a8f6a;

  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body:    'DM Sans', system-ui, sans-serif;
  --font-mono:    'DM Mono', 'Fira Code', monospace;

  --radius:       6px;
  --radius-lg:    12px;
  --shadow:       0 1px 3px rgba(0,0,0,.4), 0 4px 16px rgba(0,0,0,.25);
  --shadow-lg:    0 8px 32px rgba(0,0,0,.5);

  --transition:   0.2s ease;
  --container:    1140px;
  --header-h:     64px;
}

/* ── Reset ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--ink); }
ul { list-style: none; }
button { cursor: pointer; font: inherit; border: none; background: none; }
input, textarea, select {
  font: inherit;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .65rem 1rem;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
input::placeholder, textarea::placeholder { color: var(--ink-4); }

/* ── Layout ─────────────────────────────────────────────────────────── */
.container { max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 5rem 0; }
.section-sm { padding: 3rem 0; }

/* ── Typography ─────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5 { line-height: 1.2; font-weight: 400; }
h1 { font-family: var(--font-display); font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-family: var(--font-display); font-size: clamp(1.6rem, 3vw, 2.5rem); }
h3 { font-size: 1.25rem; font-weight: 500; }
h4 { font-size: .8rem; font-weight: 500; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
p { color: var(--ink-2); }
code, kbd { font-family: var(--font-mono); font-size: .875em; background: var(--surface); padding: .15em .4em; border-radius: 3px; color: var(--accent-light); }
pre { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.5rem; overflow-x: auto; margin: 1.5rem 0; }
pre code { background: none; padding: 0; }

/* ── Section Labels ─────────────────────────────────────────────────── */
.section-label {
  display: flex; align-items: center; gap: .75rem;
  font-size: .75rem; font-weight: 500; letter-spacing: .14em;
  text-transform: uppercase; color: var(--accent);
  margin-bottom: 1rem;
}
.section-label::before {
  content: ''; display: block; width: 28px; height: 1px; background: var(--accent);
}

/* ── Buttons ────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .65rem 1.4rem; border-radius: var(--radius);
  font-size: .9rem; font-weight: 500; letter-spacing: .02em;
  transition: all var(--transition); white-space: nowrap;
}
.btn-primary {
  background: var(--accent); color: var(--bg);
}
.btn-primary:hover { background: var(--accent-light); color: var(--bg); }
.btn-outline {
  border: 1px solid var(--border-light); color: var(--ink-2);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent-light); }
.btn-ghost { color: var(--ink-3); }
.btn-ghost:hover { color: var(--accent-light); }
.btn-sm { padding: .45rem 1rem; font-size: .8rem; }

/* ── Tags / Badges ──────────────────────────────────────────────────── */
.tag {
  display: inline-flex; align-items: center;
  padding: .2rem .65rem; border-radius: 100px;
  font-size: .72rem; font-weight: 500; letter-spacing: .06em; text-transform: uppercase;
  background: var(--surface-2); color: var(--ink-3);
  border: 1px solid var(--border);
}
.tag-accent { background: var(--accent-dim); color: var(--accent-light); border-color: rgba(90,143,135,.2); }
.tag-red    { background: rgba(192,97,74,.1);  color: #d4836e; border-color: rgba(192,97,74,.2); }
.tag-yellow { background: rgba(184,154,90,.1); color: #cdb878; border-color: rgba(184,154,90,.2); }
.tag-green  { background: rgba(90,143,106,.1); color: #7ab38a; border-color: rgba(90,143,106,.2); }

/* ── Cards ──────────────────────────────────────────────────────────── */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.card:hover { border-color: var(--border-light); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.card-link { display: block; color: inherit; }
.card-link:hover { color: inherit; }

/* ── Header ─────────────────────────────────────────────────────────── */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  background: rgba(13, 15, 18, .88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: border-color var(--transition);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 100%;
}
.site-logo {
  display: flex; align-items: center; gap: .35rem;
  color: var(--ink); font-weight: 600; font-size: 1rem;
}
.site-logo:hover { color: var(--ink); }
.logo-mark { color: var(--accent); font-family: var(--font-mono); font-size: 1.1em; }
.logo-text { letter-spacing: .04em; }

.main-nav ul { display: flex; align-items: center; gap: .25rem; }
.main-nav a {
  padding: .45rem .75rem; border-radius: var(--radius);
  font-size: .88rem; color: var(--ink-2); font-weight: 400;
  transition: all var(--transition);
}
.main-nav a:hover, .main-nav a.active { color: var(--ink); }
.main-nav .nav-cta {
  background: var(--accent); color: var(--bg) !important;
  padding: .45rem 1rem; font-weight: 500;
}
.main-nav .nav-cta:hover { background: var(--accent-light); }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  width: 32px; padding: 4px;
}
.nav-toggle span {
  display: block; height: 1.5px; background: var(--ink-2);
  transition: all var(--transition); border-radius: 2px;
}
.nav-overlay {
  display: none; position: fixed; inset: 0; z-index: 98;
  background: rgba(13,15,18,.7); backdrop-filter: blur(4px);
}

/* ── Page Hero ──────────────────────────────────────────────────────── */
.page-hero {
  padding: calc(var(--header-h) + 4rem) 0 4rem;
  border-bottom: 1px solid var(--border);
  position: relative; overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; top: 0; right: 0; width: 50%; height: 100%;
  background: radial-gradient(ellipse at 80% 50%, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero h1 { margin-bottom: .75rem; }
.page-hero p  { font-size: 1.1rem; color: var(--ink-2); max-width: 55ch; margin-bottom: 1.5rem; }
.hero-meta { display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; }
.hero-meta .tag { font-size: .7rem; }

/* ── Homepage Hero ──────────────────────────────────────────────────── */
.home-hero {
  min-height: 100svh;
  display: flex; align-items: center;
  padding: var(--header-h) 0 3rem;
  position: relative; overflow: hidden;
}
.home-hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 75% 50%, rgba(90,143,135,.07) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(90,143,135,.04) 0%, transparent 60%);
  pointer-events: none;
}
.home-hero .container { position: relative; z-index: 1; }
.hero-eyebrow {
  font-family: var(--font-mono); font-size: .8rem;
  color: var(--accent); letter-spacing: .1em; margin-bottom: 1.5rem;
  display: flex; align-items: center; gap: .5rem;
}
.hero-eyebrow::before { content: '> '; opacity: .5; }
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6.5vw, 5rem);
  line-height: 1.08; margin-bottom: 1.5rem;
  max-width: 14ch;
}
.hero-title em { font-style: italic; color: var(--accent-light); }
.hero-desc {
  font-size: 1.1rem; color: var(--ink-2);
  max-width: 50ch; margin-bottom: 2.5rem; line-height: 1.75;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: 3rem; margin-top: 5rem;
  padding-top: 2.5rem; border-top: 1px solid var(--border);
}
.stat-num {
  font-family: var(--font-display); font-size: 2.2rem; color: var(--ink);
  line-height: 1;
}
.stat-label { font-size: .8rem; color: var(--ink-3); margin-top: .25rem; }

/* ── Featured Grid ──────────────────────────────────────────────────── */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }

/* ── Post Card ──────────────────────────────────────────────────────── */
.post-card .post-meta {
  display: flex; align-items: center; gap: .75rem; margin-bottom: .75rem; flex-wrap: wrap;
}
.post-card .post-date { font-size: .78rem; color: var(--ink-4); font-family: var(--font-mono); }
.post-card h3 { color: var(--ink); margin-bottom: .5rem; font-size: 1.1rem; line-height: 1.35; }
.post-card p  { font-size: .9rem; line-height: 1.65; }
.post-card .read-more { display: inline-flex; align-items: center; gap: .35rem; font-size: .82rem; color: var(--accent); margin-top: 1rem; }
.post-card .read-more::after { content: '→'; transition: transform var(--transition); }
.post-card:hover .read-more::after { transform: translateX(3px); }

/* ── Tool Card ──────────────────────────────────────────────────────── */
.tool-card .tool-icon {
  width: 40px; height: 40px; border-radius: var(--radius);
  background: var(--accent-dim); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: .75rem; font-weight: 600;
  margin-bottom: 1rem; letter-spacing: .05em;
}
.tool-card h3 { font-size: 1rem; color: var(--ink); margin-bottom: .4rem; }
.tool-card p  { font-size: .875rem; line-height: 1.6; }
.tool-card .tool-footer { display: flex; align-items: center; justify-content: space-between; margin-top: 1.25rem; }

/* ── Section Header ─────────────────────────────────────────────────── */
.section-header {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 2.5rem; gap: 1.5rem; flex-wrap: wrap;
}
.section-header h2 { margin: 0; }

/* ── Divider ────────────────────────────────────────────────────────── */
.divider { border: none; border-top: 1px solid var(--border); margin: 3rem 0; }

/* ── Empty State ────────────────────────────────────────────────────── */
.empty-state { text-align: center; padding: 5rem 2rem; }
.empty-state .icon { font-size: 3rem; margin-bottom: 1rem; opacity: .3; }
.empty-state h3 { color: var(--ink); margin-bottom: .5rem; }

/* ── Forms ──────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: .85rem; font-weight: 500; color: var(--ink-2); margin-bottom: .5rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }

/* ── Alerts ─────────────────────────────────────────────────────────── */
.alert {
  padding: 1rem 1.25rem; border-radius: var(--radius);
  border: 1px solid; font-size: .9rem; margin-bottom: 1.25rem;
}
.alert-success { background: rgba(90,143,106,.1); border-color: rgba(90,143,106,.25); color: #7ab38a; }
.alert-error   { background: rgba(192,97,74,.1);  border-color: rgba(192,97,74,.25);  color: #d4836e; }

/* ── Pagination ─────────────────────────────────────────────────────── */
.pagination { display: flex; align-items: center; justify-content: center; gap: .5rem; margin-top: 3rem; }
.pagination a, .pagination span {
  display: flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: var(--radius);
  font-size: .85rem; border: 1px solid var(--border); color: var(--ink-2);
  transition: all var(--transition);
}
.pagination a:hover { border-color: var(--accent); color: var(--accent-light); }
.pagination .current { background: var(--accent); color: var(--bg); border-color: var(--accent); }

/* ── Footer ─────────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 4rem 0 0;
  margin-top: 5rem;
}
.footer-inner {
  display: grid; grid-template-columns: 1fr auto;
  gap: 4rem; align-items: start; padding-bottom: 3rem;
}
.footer-brand .site-logo { margin-bottom: .75rem; }
.footer-brand .tagline { font-size: .85rem; color: var(--ink-4); font-style: italic; max-width: 28ch; }
.footer-nav { display: flex; gap: 3.5rem; }
.footer-nav-col h4 { color: var(--ink-4); font-size: .7rem; letter-spacing: .14em; margin-bottom: .85rem; }
.footer-nav-col ul { display: flex; flex-direction: column; gap: .45rem; }
.footer-nav-col a { font-size: .875rem; color: var(--ink-3); }
.footer-nav-col a:hover { color: var(--accent-light); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 1.25rem 0;
}
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; }
.footer-bottom p { font-size: .78rem; color: var(--ink-4); }
.footer-stack { font-family: var(--font-mono); }

/* ── Article / Content ──────────────────────────────────────────────── */
.article-body { max-width: 72ch; }
.article-body h2 { margin: 2.5rem 0 1rem; }
.article-body h3 { margin: 2rem 0 .75rem; }
.article-body p  { margin-bottom: 1.25rem; }
.article-body ul, .article-body ol { padding-left: 1.5rem; margin-bottom: 1.25rem; color: var(--ink-2); }
.article-body li { margin-bottom: .4rem; }
.article-body blockquote {
  border-left: 3px solid var(--accent); padding-left: 1.5rem;
  color: var(--ink-3); font-style: italic; margin: 2rem 0;
}

/* ── Terminal Block ─────────────────────────────────────────────────── */
.terminal {
  background: #090b0e; border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
}
.terminal-bar {
  background: var(--surface); padding: .65rem 1rem;
  display: flex; align-items: center; gap: .5rem;
  border-bottom: 1px solid var(--border);
}
.terminal-dot { width: 10px; height: 10px; border-radius: 50%; }
.terminal-dot:nth-child(1) { background: #c0614a; }
.terminal-dot:nth-child(2) { background: #b89a5a; }
.terminal-dot:nth-child(3) { background: #5a8f6a; }
.terminal-title { font-family: var(--font-mono); font-size: .75rem; color: var(--ink-4); margin-left: .5rem; }
.terminal-body { padding: 1.5rem; font-family: var(--font-mono); font-size: .82rem; line-height: 1.8; }
.terminal-body .prompt { color: var(--accent); }
.terminal-body .cmd    { color: var(--ink); }
.terminal-body .output { color: var(--ink-3); }

/* ── Filter Bar ─────────────────────────────────────────────────────── */
.filter-bar {
  display: flex; align-items: center; gap: .5rem;
  flex-wrap: wrap; margin-bottom: 2rem;
}
.filter-btn {
  padding: .4rem .9rem; border-radius: 100px;
  font-size: .8rem; font-weight: 500;
  border: 1px solid var(--border); color: var(--ink-3);
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  border-color: var(--accent); color: var(--accent-light);
  background: var(--accent-dim);
}

/* ── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .section { padding: 3.5rem 0; }
  .footer-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-nav { gap: 2rem; flex-wrap: wrap; }
  .footer-bottom .container { flex-direction: column; gap: .5rem; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 2rem; }

  .main-nav {
    position: fixed; top: var(--header-h); right: 0; bottom: 0;
    width: 280px; background: var(--bg-2);
    border-left: 1px solid var(--border);
    padding: 2rem 1.5rem;
    transform: translateX(100%); transition: transform .3s ease;
    z-index: 99;
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: .25rem; }
  .main-nav a { padding: .75rem 1rem; font-size: 1rem; }
  .nav-toggle { display: flex; }
  .nav-overlay.visible { display: block; }
}
@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: 1.5rem; }
  .section-header { flex-direction: column; align-items: flex-start; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}

/* ── Utility ─────────────────────────────────────────────────────────── */
.text-muted   { color: var(--ink-3); }
.text-accent  { color: var(--accent-light); }
.text-mono    { font-family: var(--font-mono); }
.mt-1  { margin-top: .5rem; }
.mt-2  { margin-top: 1rem; }
.mt-3  { margin-top: 1.5rem; }
.mt-4  { margin-top: 2rem; }
.mb-4  { margin-bottom: 2rem; }
.flex-center { display: flex; align-items: center; }
.gap-1 { gap: .5rem; }
.gap-2 { gap: 1rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }