/* ============================================================
   SILVA GLOBAL STYLES
   Shared across all pages. Import after tokens.css.
   ============================================================ */

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
ol, ul { list-style: none; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; background: none; border: none; font-family: inherit; }

/* ── Base ── */
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Typography utilities ── */
.display-xl { font-family: var(--font-display); font-size: 72px;  font-weight: 300; line-height: 1.05; letter-spacing: -0.025em; }
.display-lg { font-family: var(--font-display); font-size: 56px;  font-weight: 300; line-height: 1.1;  letter-spacing: -0.025em; }
.display-md { font-family: var(--font-display); font-size: 44px;  font-weight: 300; line-height: 1.15; letter-spacing: -0.02em; }
.display-sm { font-family: var(--font-display); font-size: 32px;  font-weight: 300; line-height: 1.2;  letter-spacing: -0.015em; }
.body-lg    { font-family: var(--font-body);    font-size: 20px;  line-height: 1.6; }
.body-md    { font-family: var(--font-body);    font-size: 16px;  line-height: 1.65; }
.body-sm    { font-family: var(--font-body);    font-size: 14px;  line-height: 1.6; }
.label      { font-family: var(--font-body);    font-size: 11px;  letter-spacing: 0.14em; text-transform: uppercase; font-weight: 500; }

/* ── Section shared patterns ── */
.section-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 20px;
}
.section-title em { font-style: italic; color: var(--accent); }
.section-lead {
  font-size: 17px;
  color: var(--ink-soft);
  max-width: 620px;
  line-height: 1.6;
  margin-bottom: 56px;
}

/* ── Buttons ── */
.btn-primary {
  display: inline-block;
  padding: 14px 32px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--accent);
  transition: background var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}
.btn-primary:hover {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
  transform: translateY(-1px);
}
.btn-secondary {
  display: inline-block;
  padding: 14px 32px;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--rule-mid);
  transition: border-color var(--duration-fast),
              color var(--duration-fast),
              transform var(--duration-fast);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}
/* AI arm overrides */
body.ai-arm .section-tag { color: var(--orange); }
/* AI arm button variants */
body.ai-arm .btn-primary {
  background: var(--orange);
  border-color: var(--orange);
}
body.ai-arm .btn-primary:hover {
  background: var(--orange-bright);
  border-color: var(--orange-bright);
}
body.ai-arm .btn-secondary:hover {
  border-color: var(--orange);
  color: var(--orange-bright);
}

/* ── Glass base (hamburger + AI agent only) ── */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

/* ── Hamburger nav trigger ── */
.nav-trigger {
  position: fixed;
  top: 28px;
  right: 32px;
  z-index: 100;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: border-color var(--duration-fast);
}
.nav-trigger:hover { border-color: var(--accent); }
body.ai-arm .nav-trigger:hover { border-color: var(--orange-bright); }
.nav-trigger span {
  display: block;
  position: relative;
  width: 20px;
  height: 2px;
  background: var(--ink);
}
.nav-trigger span::before,
.nav-trigger span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--ink);
}
.nav-trigger span::before { top: -6px; }
.nav-trigger span::after  { top: 6px; }

/* ── Nav overlay + panel ── */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 99;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-mid);
}
.nav-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.nav-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(26, 26, 26, 0.45);
}
body.ai-arm .nav-backdrop { background: rgba(10, 10, 12, 0.6); }

.nav-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: 360px;
  height: 100vh;
  background: var(--glass-bg);
  border-left: 1px solid var(--glass-border);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding: 80px 48px 48px;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--duration-mid) var(--ease-out);
  overflow-y: auto;
}
.nav-overlay.open .nav-panel { transform: translateX(0); }

.nav-close {
  position: absolute;
  top: 28px;
  right: 32px;
  font-size: 24px;
  color: var(--ink-soft);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--duration-fast);
}
.nav-close:hover { color: var(--accent); }
body.ai-arm .nav-close:hover { color: var(--orange-bright); }

.nav-section-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.nav-section-label.ai { color: var(--orange-bright); }
body.ai-arm .nav-section-label { color: var(--orange-bright); }
body.ai-arm .nav-section-label.legal { color: var(--accent-bright); }

.nav-links { margin-bottom: 32px; }
.nav-links li { border-bottom: 1px solid var(--rule-soft); }
body.ai-arm .nav-links li { border-bottom-color: var(--rule); }
.nav-links a {
  display: block;
  padding: 13px 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 400;
  color: var(--ink);
  transition: color var(--duration-fast), padding-left var(--duration-fast);
}
.nav-links a:hover { color: var(--accent); padding-left: 6px; }
body.ai-arm .nav-links a:hover { color: var(--orange-bright); }
.nav-links a.nav-ai   { font-size: 17px; color: var(--ink-soft); }
.nav-links a.nav-ai:hover { color: var(--orange-bright); }
body.ai-arm .nav-links a.nav-legal { font-size: 17px; color: var(--ink-soft); }
body.ai-arm .nav-links a.nav-legal:hover { color: var(--accent-bright); }

.nav-divider { height: 1px; background: var(--rule); margin: 16px 0 24px; }

.nav-contact a {
  display: block;
  padding: 4px 0;
  font-size: 13px;
  color: var(--ink-soft);
  transition: color var(--duration-fast);
}
.nav-contact a:hover { color: var(--accent); }
body.ai-arm .nav-contact a { color: var(--ink-muted); }
body.ai-arm .nav-contact a:hover { color: var(--ink); }

/* ── AI agent float button ── */
.ai-agent {
  position: fixed;
  bottom: 32px;
  left: 32px;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 10px 16px 10px 12px;
  cursor: pointer;
  transition: border-color var(--duration-fast);
}
.ai-agent:hover { border-color: var(--accent); }
body.ai-arm .ai-agent:hover { border-color: var(--orange-bright); }
.ai-agent-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: agent-pulse 2s ease-in-out infinite;
  flex-shrink: 0;
}
body.ai-arm .ai-agent-dot { background: var(--orange-bright); }
@keyframes agent-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}
.ai-agent-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ── Footer ── */
footer {
  background: var(--bg);
  border-top: 3px solid var(--accent);
  padding: 64px 72px 48px;
}
body.ai-arm footer { border-top-color: var(--orange); }

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-logo {
  height: 28px;
  width: auto;
  margin-bottom: 16px;
}
.footer-prop {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.5;
  max-width: 260px;
  margin-bottom: 20px;
}
.footer-social a {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  transition: color var(--duration-fast);
}
.footer-social a:hover { color: var(--accent); }
body.ai-arm .footer-social a:hover { color: var(--orange); }

.footer-col-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
body.ai-arm .footer-col-label { color: var(--orange); }

.footer-links li { margin-bottom: 8px; }
.footer-links a {
  font-size: 13px;
  color: var(--ink-soft);
  transition: color var(--duration-fast);
}
.footer-links a:hover { color: var(--accent); }
body.ai-arm .footer-links a:hover { color: var(--orange); }

.footer-newsletter {
  margin-top: 24px;
}
.footer-newsletter-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 12px;
}
.footer-newsletter-form {
  display: flex;
  gap: 0;
}
.footer-newsletter-input {
  flex: 1;
  padding: 10px 14px;
  background: var(--bg-alt);
  border: 1px solid var(--rule);
  border-right: none;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--ink);
  outline: none;
  transition: border-color var(--duration-fast);
}
.footer-newsletter-input:focus { border-color: var(--accent); }
body.ai-arm .footer-newsletter-input {
  background: var(--bg-card);
  border-color: var(--rule-mid);
  color: var(--ink);
}
body.ai-arm .footer-newsletter-input:focus { border-color: var(--orange); }
.footer-newsletter-btn {
  padding: 10px 16px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  transition: background var(--duration-fast);
}
.footer-newsletter-btn:hover { background: var(--accent-dim); }
body.ai-arm .footer-newsletter-btn { background: var(--orange); }
body.ai-arm .footer-newsletter-btn:hover { background: var(--orange-bright); }

.footer-bottom {
  border-top: 1px solid var(--rule);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--ink-muted);
  flex-wrap: wrap;
  gap: 8px;
}
.footer-legal-links { display: flex; gap: 24px; }
.footer-legal-links a { color: var(--ink-muted); transition: color var(--duration-fast); }
.footer-legal-links a:hover { color: var(--accent); }
body.ai-arm .footer-legal-links a:hover { color: var(--orange); }

/* ── Numbered list (no bullets ever) ── */
.numbered-list { counter-reset: item; }
.numbered-list li {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 0 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule-soft);
  align-items: baseline;
}
.numbered-list li:last-child { border-bottom: none; }
.numbered-list li::before {
  content: counter(item, decimal-leading-zero);
  counter-increment: item;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  padding-top: 2px;
}

/* ── Page section default padding ── */
.section { padding: 100px 72px; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .section { padding: 72px 32px; }
  footer { padding: 48px 32px 36px; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .nav-panel { width: 320px; }
}
@media (max-width: 640px) {
  .nav-panel { width: 100%; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}