/* =============================================
   NEXUS WAVE — style.css
   Global variables, reset, typography, shared
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,700;0,900;1,400;1,700&family=Instrument+Sans:wght@300;400;500;600&display=swap');

/* ─── CSS Variables ─── */
:root {
  --bg:      #050505;
  --surface: #111111;
  --surface2: #1C1C1C;
  --surface3: #2A2A2A;
  --g4:      #3D3D3D;
  --g5:      #6B6B6B;
  --g6:      #9A9A9A;
  --g7:      #C8C8C8;
  --g8:      #E8E8E6;
  --text:    #FAFAF8;
  --border:  rgba(255,255,255,0.08);
  --display: 'Playfair Display', Georgia, serif;
  --sans:    'Instrument Sans', system-ui, sans-serif;
  --ease:    cubic-bezier(0.22, 1, 0.36, 1);
}

/* ─── Reset ─── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.6;
  overflow-x: hidden;
}

img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

/* ─── Typography ─── */
.display {
  font-family: var(--display);
  font-weight: 900;
  letter-spacing: -3px;
  line-height: 0.92;
}

.display-italic {
  font-family: var(--display);
  font-style: italic;
  font-weight: 700;
  color: var(--g5);
}

.label {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--g5);
  display: flex;
  align-items: center;
  gap: 14px;
}

.label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--g5);
  flex-shrink: 0;
}

/* ─── Sections ─── */
section {
  padding: 120px 56px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

/* ─── Buttons ─── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--text);
  color: var(--bg);
  padding: 14px 28px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--sans);
  letter-spacing: 0.3px;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}

.btn-primary:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--g5);
  padding: 14px 28px;
  border-radius: 4px;
  border: 1px solid var(--border);
  font-size: 13px;
  font-family: var(--sans);
  transition: border-color 0.2s, color 0.2s;
}

.btn-outline:hover {
  border-color: rgba(255,255,255,0.2);
  color: var(--text);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--g5);
  font-size: 13px;
  font-family: var(--sans);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  padding-bottom: 2px;
  transition: color 0.2s;
}

.btn-ghost:hover {
  color: var(--text);
}

/* ─── Dividers ─── */
.rule {
  height: 1px;
  background: var(--border);
  margin: 40px 0;
}

/* ─── Scroll Reveal ─── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── WhatsApp Button ─── */
.wa-float {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 52px;
  height: 52px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 90;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.wa-float:hover {
  background: var(--surface2);
  transform: translateY(-2px);
}

.wa-float svg {
  width: 22px;
  height: 22px;
  fill: var(--g6);
  transition: fill 0.2s;
}

.wa-float:hover svg {
  fill: var(--text);
}