/* =========================================================
   Kìzis Software — shared stylesheet
   Used by index.html, about.html, products.html, contact.html
   ========================================================= */

:root {
  --ink: #0a0a0a;
  --paper: #f6f1e7;
  --paper-deep: #ede5d3;
  --red: #c0392b;
  --red-deep: #8b1e14;
  --muted: #4a4a4a;
  --display: 'Cormorant Garamond', 'Times New Roman', serif;
  --body: 'Inter', system-ui, sans-serif;
}

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

html, body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(0,0,0,0.025) 1px, transparent 1px);
  background-size: 3px 3px;
  z-index: 1; mix-blend-mode: multiply;
}

a { color: var(--ink); }

/* ============= TOP BAR ============= */
.topbar {
  position: relative; z-index: 5;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.6rem 3rem;
  border-bottom: 1px solid rgba(10,10,10,0.12);
  background: var(--paper);
}

.mark {
  display: flex; align-items: center; gap: 0.7rem;
  font-family: var(--display); font-weight: 600; font-size: 1.4rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: inherit;
}
.mark-glyph { width: 36px; height: 36px; flex-shrink: 0; }
.mark-glyph svg { width: 100%; height: 100%; display: block; }
.mark em { font-style: italic; color: var(--red-deep); font-weight: 500; }
.mark .meaning {
  font-family: var(--body);
  font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--muted); font-weight: 400;
  margin-left: 0.5rem; padding-left: 0.65rem;
  border-left: 1px solid rgba(10,10,10,0.18);
  line-height: 1.3;
}

.nav {
  display: flex; gap: 2.4rem;
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.16em;
  font-weight: 500;
}
.nav a {
  color: var(--ink); text-decoration: none;
  position: relative; padding-bottom: 4px;
}
.nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: var(--red);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.7, 0, 0.3, 1);
}
.nav a:hover::after, .nav a.active::after { transform: scaleX(1); }
.nav-cta { color: var(--red) !important; }

/* ============= BUTTONS ============= */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.95rem 1.8rem;
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.2em;
  font-weight: 500; text-decoration: none;
  border: 1px solid var(--ink);
  background: var(--ink); color: var(--paper);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.7, 0, 0.3, 1);
}
.btn:hover { background: var(--red-deep); border-color: var(--red-deep); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn .arrow { transition: transform 0.3s ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* ============= FOOTER ============= */
footer {
  position: relative; z-index: 3;
  padding: 1.5rem 3rem;
  border-top: 1px solid rgba(10,10,10,0.12);
  display: flex; justify-content: space-between;
  font-size: 0.74rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted);
  flex-wrap: wrap; gap: 1rem;
}

/* ============= RESPONSIVE — TOPBAR & FOOTER ============= */
@media (max-width: 1100px) {
  .mark .meaning { display: none; }
}
@media (max-width: 900px) {
  .topbar { padding: 1.2rem 1.4rem; }
  .nav { gap: 1.2rem; font-size: 0.68rem; }
  footer { padding: 1.2rem 1.4rem; flex-direction: column; align-items: flex-start; }
}
@media (max-width: 600px) {
  .nav a:not(.nav-cta) { display: none; }
}