/* ============================================================
   Kitt — Portfolio page styles  (dark theme page)
   ============================================================ */

/* ---------- PAGE HERO (dark variant — row layout) ---------- */
.page-hero {
  padding: 180px 0 80px;
  border-bottom: 1px solid var(--line-dark);
  margin-bottom: 80px;
}
.page-hero .row {
  display: flex; justify-content: space-between; align-items: flex-end;
  flex-wrap: wrap; gap: 32px;
}
.page-hero h1 {
  font-weight: 900;
  font-size: clamp(56px, 10vw, 140px); line-height: 0.95;
  letter-spacing: -0.05em;
  opacity: 0;
  animation: fade-up 1s .2s cubic-bezier(.2, .7, .2, 1) forwards;
}
.page-hero h1 .light { font-weight: 300; color: var(--muted-2); }
.page-hero .desc {
  max-width: 480px;
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.7;
  color: var(--muted-2); word-break: keep-all;
  opacity: 0;
  animation: fade-up 1s .45s cubic-bezier(.2, .7, .2, 1) forwards;
}
.page-hero .count {
  font-family: var(--mono); font-size: 12px;
  color: var(--muted); letter-spacing: 0.1em;
  margin-bottom: 24px;
  display: flex; align-items: center; gap: 10px;
  opacity: 0;
  animation: fade-up .8s .05s cubic-bezier(.2, .7, .2, 1) forwards;
}
.page-hero .count::before {
  content: ""; width: 5px; height: 5px;
  border-radius: 50%; background: var(--accent);
}

section.portfolio { padding-bottom: 120px; }

/* ---------- FILTERS ---------- */
.filter-row {
  display: flex; gap: 8px; flex-wrap: wrap;
  margin-bottom: 48px;
  opacity: 0;
  animation: fade-up .8s .6s cubic-bezier(.2, .7, .2, 1) forwards;
}
.filter-btn {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.15em; color: var(--muted);
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  padding: 10px 16px;
  transition: all .2s;
}
.filter-btn:hover { color: var(--paper); border-color: var(--paper); }
.filter-btn.active {
  background: var(--paper); color: var(--ink);
  border-color: var(--paper);
}

/* ---------- GRID ---------- */
.pf-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.pf-card {
  display: block; color: var(--paper);
  border-radius: 16px; overflow: hidden;
  background: #141414;
  border: 1px solid var(--line-dark);
  transition: transform .5s cubic-bezier(.2, .7, .2, 1);
}
.pf-card:hover { transform: translateY(-6px); }
.pf-card .visual { aspect-ratio: 4 / 3; position: relative; overflow: hidden; }
.pf-card .visual .bg {
  position: absolute; inset: 0;
  transition: transform .8s cubic-bezier(.2, .7, .2, 1);
}
.pf-card:hover .visual .bg { transform: scale(1.06); }
.pf-card .visual .grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
}
.pf-card .visual .mark {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-weight: 900;
  font-size: clamp(32px, 3.5vw, 52px);
  letter-spacing: -0.04em;
  color: var(--paper); text-align: center;
  padding: 0 24px;
  transition: transform .6s cubic-bezier(.2, .7, .2, 1);
}
.pf-card:hover .visual .mark { transform: translateY(-4px); }
.pf-card .visual .mark .light { font-weight: 300; color: var(--muted-2); }
.pf-card .visual .corner {
  position: absolute; top: 20px; right: 20px;
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: grid; place-items: center;
  backdrop-filter: blur(6px);
  transition: background .3s, transform .3s;
  z-index: 2;
}
.pf-card:hover .visual .corner { background: var(--paper); transform: rotate(-45deg); }
.pf-card:hover .visual .corner svg { stroke: var(--ink); }
.pf-card .visual .index {
  position: absolute; top: 20px; left: 20px;
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted-2); z-index: 2;
}

/* Visual variants */
.v-workkitt .bg { background: linear-gradient(135deg, #2c2c2c 0%, #0a0a0a 100%); }
.v-sellkitt .bg { background: linear-gradient(135deg, #252525 0%, #0a0a0a 60%, #1a1a1a 100%); }
.v-cold     .bg { background: linear-gradient(135deg, #202020 0%, #0a0a0a 100%); }
.v-hamoa    .bg { background: linear-gradient(135deg, #1a1f2a 0%, #0a0a0a 100%); }
.v-aero     .bg { background: linear-gradient(135deg, #262221 0%, #0a0a0a 100%); }
.v-rivas    .bg { background: linear-gradient(135deg, #1f1a1a 0%, #0a0a0a 100%); }
.v-semi     .bg { background: linear-gradient(135deg, #1a2222 0%, #0a0a0a 100%); }
.v-iga      .bg { background: linear-gradient(135deg, #241f1a 0%, #0a0a0a 100%); }

.pf-card .meta { padding: 24px 24px 28px; }
.pf-card .tag {
  display: inline-block;
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.18em; color: var(--muted);
  margin-bottom: 14px;
}
.pf-card h3 {
  font-size: 20px; font-weight: 700; letter-spacing: -0.02em;
  margin-bottom: 10px; line-height: 1.35;
  transition: color .3s;
}
.pf-card:hover h3 { color: var(--accent); }
.pf-card .blurb {
  font-size: 13px; color: var(--muted-2);
  line-height: 1.6; min-height: 42px;
}
.pf-card .foot {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 20px; padding-top: 16px;
  border-top: 1px solid var(--line-dark);
  font-family: var(--mono); font-size: 11px;
  color: var(--muted);
}
@media (max-width: 900px) { .pf-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .pf-grid { grid-template-columns: 1fr; } }

/* ---------- CTA ---------- */
.cta-section {
  text-align: center; padding: 120px 0;
  border-top: 1px solid var(--line-dark);
}
.cta-section h2 {
  font-weight: 900;
  font-size: clamp(40px, 7vw, 88px); letter-spacing: -0.05em;
  line-height: 0.95; margin-bottom: 32px;
}
.cta-section h2 .fade { color: var(--muted); }
.cta-section p {
  font-size: 15px; color: var(--muted-2);
  max-width: 560px; margin: 0 auto 48px;
  line-height: 1.7; word-break: keep-all;
}
.cta-primary {
  display: inline-flex; align-items: center; gap: 16px;
  background: var(--paper); color: var(--ink);
  padding: 20px 14px 20px 40px;
  border-radius: 999px;
  font-size: 16px; font-weight: 600; letter-spacing: -0.01em;
  transition: transform .25s cubic-bezier(.2, .7, .2, 1);
  will-change: transform;
}
.cta-primary .arrow {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--ink); color: var(--paper);
  display: grid; place-items: center;
  transition: transform .3s;
}
.cta-primary:hover .arrow { transform: rotate(-45deg); }

/* ============================================================
   MOBILE PASS — portfolio
   ============================================================ */
@media (max-width: 768px) {
  .page-hero { padding: 120px 0 48px; margin-bottom: 48px; }
  .page-hero .row { flex-direction: column; align-items: flex-start; gap: 20px; }
  .page-hero h1 { font-size: clamp(48px, 14vw, 80px); }
  .page-hero .desc { max-width: 100%; }

  section.portfolio { padding-bottom: 80px; }

  .filter-row { gap: 6px; margin-bottom: 32px; }
  .filter-btn { padding: 8px 14px; font-size: 10px; letter-spacing: 0.12em; }

  .pf-card .meta { padding: 20px 20px 24px; }

  .cta-section { padding: 80px 0; }
  .cta-section h2 { font-size: clamp(32px, 9vw, 56px); margin-bottom: 20px; }
  .cta-section p { margin-bottom: 32px; }
  .cta-primary { padding: 16px 12px 16px 28px; font-size: 14px; gap: 12px; }
  .cta-primary .arrow { width: 36px; height: 36px; }
}