/* ==========================================================================
   COMPONENTS — nav, loader, footer, whatsapp, scroll progress, forms
   ========================================================================== */

/* ---- Loading screen ---- */
.loader {
  position: fixed; inset: 0;
  background: var(--color-ink);
  z-index: var(--z-loader);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column;
  gap: var(--space-3);
}
.loader-mark { width: 72px; height: 72px; }
.loader-mark circle {
  fill: none; stroke: var(--color-accent); stroke-width: 1.5;
  stroke-dasharray: 220; stroke-dashoffset: 220;
}
.loader-label {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--color-silver);
  overflow: hidden;
}

/* ---- Scroll progress ---- */
.scroll-progress {
  position: fixed; top: 0; left: 0;
  height: 2.5px; width: 0%;
  background: var(--gradient-steel);
  z-index: var(--z-progress);
  transform-origin: left;
}

/* ---- Navigation ---- */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: var(--z-nav);
  padding: 1.4rem 0;
  transition: padding var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.site-nav .container {
  display: flex; align-items: center; justify-content: space-between;
}
.site-nav.is-scrolled {
  padding: 0.85rem 0;
  background: rgba(247, 248, 250, 0.72);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  box-shadow: 0 1px 0 rgba(20,23,27,0.06);
}

.nav-logo { display: flex; align-items: center; gap: 0.7rem; }
.nav-logo svg { width: 40px; height: 40px; }
.nav-logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  line-height: 1.1;
}
.nav-logo-text span {
  display: block;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.68rem;
  letter-spacing: var(--ls-wide);
  color: var(--color-ink-mute);
  text-transform: uppercase;
  margin-top: 2px;
}

.nav-links {
  display: flex; align-items: center; gap: var(--space-5);
}
.nav-links a {
  font-size: var(--fs-small);
  font-weight: 500;
  position: relative;
  padding: 0.3rem 0;
}
.nav-links a::after {
  content: '';
  position: absolute; left: 0; right: 100%; bottom: -2px;
  height: 1.5px; background: var(--color-accent);
  transition: right var(--dur-fast) var(--ease-out);
}
.nav-links a:hover::after, .nav-links a.active::after { right: 0; }
.nav-links a.active { color: var(--color-primary); }

.nav-cta { display: flex; align-items: center; gap: var(--space-3); }
.nav-cta .btn { padding: 0.8rem 1.5rem; font-size: var(--fs-caption); }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  width: 28px; padding: 8px 0;
}
.nav-toggle span { width: 100%; height: 1.5px; background: var(--color-ink); transition: all var(--dur-fast) var(--ease-out); }

.mobile-menu {
  position: fixed; inset: 0; z-index: 99;
  background: var(--color-bg);
  display: flex; flex-direction: column;
  padding: 6rem var(--container-pad) 3rem;
  transform: translateY(-100%);
  transition: transform var(--dur-med) var(--ease-precision);
}
.mobile-menu.is-open { transform: translateY(0); }
.mobile-menu a {
  font-family: var(--font-display);
  font-size: 2rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--color-silver-soft);
}

/* ---- WhatsApp float ---- */
.whatsapp-float {
  position: fixed; bottom: var(--space-4); right: var(--space-4);
  z-index: var(--z-whatsapp);
  width: 60px; height: 60px;
  border-radius: 50%;
  background: #1F8A5B;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 30px rgba(31, 138, 91, 0.4);
  transition: transform var(--dur-fast) var(--ease-out);
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float svg { width: 28px; height: 28px; fill: #fff; }

/* ---- Footer ---- */
.site-footer {
  background: var(--color-surface-dark);
  color: var(--color-silver);
  padding-top: var(--space-7);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: var(--space-5);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .nav-logo-text { color: #fff; }
.footer-brand .nav-logo-text span { color: var(--color-silver-dark); }
.footer-brand p { margin-top: var(--space-3); color: var(--color-silver-dark); max-width: 32ch; }
.footer-col h4 { color: #fff; font-size: var(--fs-caption); font-family: var(--font-mono); letter-spacing: var(--ls-wide); text-transform: uppercase; margin-bottom: var(--space-3); }
.footer-col a, .footer-col p { display: block; color: var(--color-silver); font-size: var(--fs-small); margin-bottom: 0.8rem; transition: color var(--dur-fast); }
.footer-col a:hover { color: var(--color-accent); }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-block: var(--space-3);
  font-size: var(--fs-caption);
  color: var(--color-silver-dark);
  flex-wrap: wrap; gap: var(--space-2);
}
.footer-bottom .msme-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono); color: var(--color-silver);
}
.footer-legal { display: flex; gap: var(--space-3); }

/* ---- Forms ---- */
.form-group { margin-bottom: var(--space-3); }
.form-group label {
  display: block; font-size: var(--fs-caption); font-family: var(--font-mono);
  letter-spacing: var(--ls-wide); text-transform: uppercase;
  color: var(--color-ink-mute); margin-bottom: 0.6rem;
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 1rem 1.2rem;
  background: var(--color-surface);
  border: 1.5px solid var(--color-silver-soft);
  border-radius: var(--radius-sm);
  font-size: var(--fs-body);
  transition: border-color var(--dur-fast) var(--ease-out);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--color-accent); outline: none;
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); }
.form-file {
  border: 1.5px dashed var(--color-silver-dark);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.form-file:hover { border-color: var(--color-accent); background: var(--color-primary-light); }

/* ---- Responsive ---- */
@media (max-width: 980px) {
  .nav-links, .nav-cta .btn-outline { display: none; }
  .nav-toggle { display: flex; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}