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

:root {
  --bg:         #0d0f14;
  --surface:    #13161d;
  --card:       #181c25;
  --border:     #252a36;
  --border-hi:  #2f3647;
  --accent:     #00e5a0;
  --accent-dim: #00b07a;
  --accent2:    #0099ff;
  --danger:     #ff4d6d;
  --warn:       #ffb627;
  --text:       #e2e8f0;
  --muted:      #64748b;
  --mono:       'JetBrains Mono', monospace;
  --sans:       'Syne', sans-serif;
}

html, body { height: 100%; }

body {
  font-family: var(--mono);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(0,229,160,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,160,.025) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none; z-index: 0;
}

body::after {
  content: '';
  position: fixed; width: 700px; height: 700px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,153,255,.04) 0%, transparent 70%);
  bottom: -200px; left: -150px;
  pointer-events: none; z-index: 0;
}

.page {
  position: relative; z-index: 1;
  display: flex; flex-direction: column;
  min-height: 100vh;
  padding: 1.75rem 1.5rem 3rem;
  max-width: 1400px; margin: 0 auto; width: 100%;
}

/* Header */
.page-header { margin-bottom: 2.5rem; }
.tag {
  font-size: .68rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--accent); margin-bottom: .4rem;
  display: flex; align-items: center; gap: .4rem;
}
.tag::before { content: '>'; }
h1 { font-family: var(--sans); font-size: 2rem; font-weight: 700; letter-spacing: -.015em; line-height: 1.05; }
h1 span { color: var(--accent); }
.page-sub { font-size: .8rem; color: var(--muted); margin-top: .5rem; line-height: 1.6; max-width: 560px; }

/* Tools grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.tool-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  display: flex; flex-direction: column; gap: .75rem;
  text-decoration: none; color: inherit;
  transition: border-color .18s, transform .18s, box-shadow .18s;
  position: relative; overflow: hidden;
}
.tool-card::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at top left, rgba(0,229,160,.04), transparent 60%);
  opacity: 0; transition: opacity .2s;
}
.tool-card:hover { border-color: var(--border-hi); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.3); }
.tool-card:hover::before { opacity: 1; }

.tool-icon {
  width: 42px; height: 42px; border-radius: 10px;
  background: rgba(0,229,160,.08); border: 1px solid rgba(0,229,160,.15);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); flex-shrink: 0;
}
.tool-icon--blue { background: rgba(0,153,255,.08); border-color: rgba(0,153,255,.15); color: #60a5fa; }
.tool-icon--purple { background: rgba(192,132,252,.08); border-color: rgba(192,132,252,.15); color: #c084fc; }
.tool-icon--yellow { background: rgba(251,191,36,.08); border-color: rgba(251,191,36,.15); color: #fbbf24; }
.tool-icon--orange { background: rgba(251,146,60,.08); border-color: rgba(251,146,60,.15); color: #fb923c; }
.tool-icon--red { background: rgba(248,113,113,.08); border-color: rgba(248,113,113,.15); color: #f87171; }

.tool-name {
  font-family: var(--sans); font-size: 1.05rem; font-weight: 700;
  color: var(--text); letter-spacing: -.01em;
}
.tool-desc { font-size: .75rem; color: var(--muted); line-height: 1.65; flex: 1; }

.tool-tags { display: flex; flex-wrap: wrap; gap: .3rem; }
.tool-tag {
  font-size: .62rem; padding: .15rem .45rem;
  border-radius: 4px; border: 1px solid var(--border);
  color: var(--muted); letter-spacing: .04em; text-transform: uppercase;
}

.tool-cta {
  display: flex; align-items: center; gap: .4rem;
  font-size: .73rem; color: var(--accent); margin-top: .25rem;
  transition: gap .15s;
}
.tool-card:hover .tool-cta { gap: .6rem; }
.tool-cta svg { transition: transform .15s; }
.tool-card:hover .tool-cta svg { transform: translateX(3px); }

/* Footer */
.footer-note { font-size: .63rem; color: var(--muted); text-align: center; margin-top: 2.5rem; letter-spacing: .04em; }
.footer-note a { color: var(--accent-dim); text-decoration: none; }
.footer-note a:hover { color: var(--accent); }

/* Animation */
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.page { animation: fadeUp .35s ease both; }

@media (max-width: 640px) {
  .tools-grid { grid-template-columns: 1fr; }
}

/* ── Site Nav ── */
.site-nav {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(13,15,20,.92);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-nav-inner {
  display: flex; align-items: center; height: 56px; gap: 2rem;
  max-width: 1400px; margin: 0 auto; padding: 0 2rem; width: 100%;
}
.nav-logo {
  font-family: var(--mono); font-size: .85rem; font-weight: 700;
  color: var(--accent); text-decoration: none; letter-spacing: -.01em;
  white-space: nowrap; display: flex; align-items: center; gap: .15rem;
}
.nav-logo .brace { color: var(--muted); font-weight: 400; }
.nav-links { display: flex; align-items: center; gap: 1.5rem; flex: 1; }
.nav-links a { font-family: var(--mono); font-size: .78rem; color: var(--muted); text-decoration: none; letter-spacing: .03em; transition: color .14s; }
.nav-links a:hover { color: var(--text); }
.nav-dropdown { position: relative; }
.nav-dropdown-toggle {
  display: inline-flex; align-items: center; gap: .35rem;
  background: none; border: none; cursor: pointer;
  font-family: var(--mono); font-size: .78rem;
  color: var(--accent); padding: 0; letter-spacing: .03em; transition: color .14s;
}
.nav-dropdown-toggle:hover { color: #00ffb3; }
.nav-dropdown-toggle svg { transition: transform .2s ease; }
.nav-dropdown.open .nav-dropdown-toggle svg { transform: rotate(180deg); }
.nav-dropdown-menu {
  position: absolute; top: calc(100% + 1rem); left: 50%; transform: translateX(-50%);
  min-width: 210px; background: #181c25;
  border: 1px solid var(--border-hi); border-radius: 10px;
  padding: .4rem; display: none; flex-direction: column; gap: .15rem;
  box-shadow: 0 12px 32px rgba(0,0,0,.6); z-index: 999;
}
.nav-dropdown.open .nav-dropdown-menu { display: flex; animation: dropIn .15s ease both; }
.nav-dropdown-menu a {
  display: flex; align-items: center; gap: .6rem;
  padding: .55rem .75rem; border-radius: 7px;
  font-size: .75rem; color: #94a3b8; text-decoration: none;
  transition: background .12s, color .12s; white-space: nowrap; letter-spacing: .02em;
}
.nav-dropdown-menu a:hover { background: rgba(0,229,160,.07); color: var(--accent); }
.nav-dropdown-menu a.active { background: rgba(0,229,160,.1); color: var(--accent); }
.nav-dropdown-menu a svg { opacity: .55; flex-shrink: 0; }
.nav-dropdown-menu a:hover svg, .nav-dropdown-menu a.active svg { opacity: 1; }
@keyframes dropIn {
  from { opacity: 0; transform: translateX(-50%) translateY(-6px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}
.nav-cv {
  font-family: var(--mono); font-size: .72rem; font-weight: 700;
  padding: .35rem .85rem; border-radius: 6px;
  background: var(--accent); color: #0d0f14; text-decoration: none;
  letter-spacing: .05em; transition: background .14s; white-space: nowrap; margin-left: auto;
}
.nav-cv:hover { background: #00ffb3; }
@media (max-width: 640px) {
  .nav-links a:not(.nav-dropdown-toggle) { display: none; }
}