/* ============================================================
   URTEC SRL — Design System
   Stack: Tailwind CDN + custom properties + minimal animations
   ============================================================ */

:root {
  /* Color tokens */
  --primary:       #FFD700;
  --primary-dim:   rgba(255,215,0,.15);
  --primary-glow:  rgba(255,215,0,.35);
  --bg:            #0a0a0a;
  --surface:       rgba(255,255,255,.04);
  --surface-hover: rgba(255,255,255,.08);
  --border:        rgba(255,255,255,.1);
  --border-hover:  rgba(255,215,0,.45);
  --text-muted:    rgba(255,255,255,.45);
  --text-subtle:   rgba(255,255,255,.25);

  /* Motion */
  --ease-out:      cubic-bezier(0.23, 1, 0.32, 1);
  --transition:    all 0.6s var(--ease-out);
  --transition-fast: all 0.25s var(--ease-out);
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

body {
  background-color: var(--bg);
  color: #fff;
  font-family: 'Inter', sans-serif;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar              { width: 4px; }
::-webkit-scrollbar-track        { background: var(--bg); }
::-webkit-scrollbar-thumb        { background: rgba(255,215,0,.35); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover  { background: var(--primary); }

/* ── Selection ──────────────────────────────────────────────── */
::selection { background: var(--primary); color: #000; }

/* ── Header ─────────────────────────────────────────────────── */
header {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 1100px;
  height: 65px;
  background: rgba(10,10,10,.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 25px;
  z-index: 1000;
  transition: background 0.4s ease, border-color 0.4s ease, top 0.4s ease;
}

header.scrolled {
  background: rgba(10,10,10,.92);
  border-color: rgba(255,215,0,.2);
  top: 12px;
}

/* Nav desktop links */
.nav-links { gap: 4px; }

.nav-link {
  color: #fff;
  text-decoration: none;
  margin-left: 4px;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
  padding: 6px 14px;
  border-radius: 99px;
  opacity: .6;
  transition: var(--transition-fast);
  position: relative;
}
.nav-link:hover {
  opacity: 1;
  color: var(--primary);
  background: var(--primary-dim);
}

/* ── Keyframes ───────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideRight {
  from { opacity: 0; transform: translateX(-20px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes pulse-ring {
  0%   { transform: scale(1);   opacity: .6; }
  70%  { transform: scale(1.6); opacity: 0; }
  100% { transform: scale(1.6); opacity: 0; }
}

@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position:  200% center; }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Animation utility classes ───────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays */
.stagger-1 { transition-delay: .1s; }
.stagger-2 { transition-delay: .2s; }
.stagger-3 { transition-delay: .3s; }
.stagger-4 { transition-delay: .4s; }
.stagger-5 { transition-delay: .5s; }

/* ── Premium card ────────────────────────────────────────────── */
.premium-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.premium-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(ellipse at top left, var(--primary-dim), transparent 60%);
  opacity: 0;
  transition: opacity 0.5s ease;
}
.premium-card:hover {
  border-color: var(--border-hover);
  background: var(--surface-hover);
  transform: translateY(-3px);
  box-shadow: 0 20px 60px rgba(0,0,0,.5), 0 0 0 1px var(--primary-glow);
}
.premium-card:hover::before { opacity: 1; }

/* ── Stat counter card ───────────────────────────────────────── */
.stat-card {
  text-align: center;
  padding: 28px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  transition: var(--transition);
}
.stat-card:hover {
  border-color: var(--border-hover);
  background: var(--surface-hover);
}
.stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  color: var(--primary);
  display: block;
  line-height: 1;
  animation: countUp 0.6s var(--ease-out) both;
}
.stat-label {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ── Badge ───────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 99px;
  border: 1px solid currentColor;
}
.badge-gold  { color: var(--primary); background: var(--primary-dim); border-color: rgba(255,215,0,.3); }
.badge-white { color: rgba(255,255,255,.7); background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.15); }

/* ── Shimmer text ────────────────────────────────────────────── */
.text-shimmer {
  background: linear-gradient(90deg, var(--primary) 0%, #fff 50%, var(--primary) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 4s linear infinite;
}

/* ── Divider ─────────────────────────────────────────────────── */
.divider-gold {
  width: 50px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), transparent);
  border-radius: 99px;
}

/* ── Breadcrumb ──────────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); text-decoration: none; transition: color .2s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { color: var(--text-subtle); }

/* ── Form styles ─────────────────────────────────────────────── */
.form-input {
  background: rgba(255,255,255,.05);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 18px;
  color: #fff;
  font-family: 'Inter', sans-serif;
  font-size: .9rem;
  width: 100%;
  transition: border-color .25s, background .25s;
  outline: none;
}
.form-input::placeholder { color: var(--text-subtle); }
.form-input:focus {
  border-color: rgba(255,215,0,.5);
  background: rgba(255,255,255,.07);
}

.btn-primary {
  background: var(--primary);
  color: #000;
  font-weight: 800;
  font-size: .8rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 14px 32px;
  border-radius: 99px;
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255,215,0,.35);
}
.btn-primary:active { transform: translateY(0); }

/* ── WhatsApp floating button ────────────────────────────────── */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 1100;
}
.whatsapp-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  box-shadow: 0 6px 24px rgba(37,211,102,.4);
  transition: transform .3s var(--ease-out), box-shadow .3s ease;
  position: relative;
  text-decoration: none;
}
.whatsapp-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: #25D366;
  animation: pulse-ring 2.5s ease-out infinite;
  z-index: -1;
}
.whatsapp-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 10px 32px rgba(37,211,102,.55);
}
.whatsapp-tooltip {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: rgba(10,10,10,.9);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px 12px;
  font-size: .72rem;
  font-weight: 600;
  white-space: nowrap;
  color: #fff;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease;
  backdrop-filter: blur(10px);
}
.whatsapp-float:hover .whatsapp-tooltip { opacity: 1; }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  header { width: 95%; padding: 0 16px; }
  .whatsapp-float { bottom: 20px; right: 20px; }
}