/* ============================================
   ONDA — Global CSS
   Variables, Reset, Typography, Components
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Readex+Pro:wght@200;300;400;500;600;700&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,300;1,9..40,400&display=swap');

/* ── Variables ── */
:root {
  --black:    #0A0A0A;
  --orange:   #FF6B00;
  --platinum: #C8C8C8;
  --black-alt: #111111;

  --font-display: 'Readex Pro', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  --text-display:  clamp(3.5rem, 9vw, 8rem);
  --text-h1:       clamp(2.25rem, 5vw, 4.5rem);
  --text-h2:       clamp(1.75rem, 3vw, 2.75rem);
  --text-h3:       clamp(1.25rem, 2vw, 1.75rem);
  --text-body:     clamp(1rem, 1.5vw, 1.125rem);
  --text-caption:  0.8rem;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  5rem;
  --space-xl:  9rem;
  --space-2xl: 14rem;

  --max-width: 1200px;
  --content-pad: clamp(1.5rem, 6vw, 7rem);

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--black);
  color: var(--platinum);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg {
  display: block;
  max-width: 100%;
}

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

ul, ol {
  list-style: none;
}

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

/* ── Skip Link ── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  background: var(--orange);
  color: var(--black);
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-caption);
  z-index: 999;
  transition: top 200ms;
}

.skip-link:focus {
  top: var(--space-sm);
}

/* ── Container ── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--content-pad);
}

/* ── Section ── */
.section {
  padding: var(--space-xl) 0;
}

/* ── Section Label ── */
.section-label {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-caption);
  font-weight: 500;
  color: var(--orange);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h1 { font-size: var(--text-h1); font-weight: 700; }
h2 { font-size: var(--text-h2); font-weight: 600; }
h3 { font-size: var(--text-h3); font-weight: 600; }
h4 { font-size: var(--text-caption); font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--platinum); opacity: 0.5; }

p {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.75;
  color: var(--platinum);
}

/* ── Emphasis System ── */
.emphasis-orange {
  color: var(--orange);
  font-weight: 700;
}

.emphasis-platinum {
  color: var(--platinum);
  font-weight: 700;
}

/* ── Buttons ── */
.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--orange);
  color: var(--black);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  padding: 1rem 2.25rem;
  text-decoration: none;
  transition: background 250ms var(--ease), color 250ms var(--ease), transform 250ms var(--ease);
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn-whatsapp:hover {
  background: var(--platinum);
  color: var(--black);
  transform: translateY(-2px);
}

.btn-whatsapp .icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.btn-whatsapp-dark {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--black);
  color: var(--platinum);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  padding: 1rem 2.25rem;
  text-decoration: none;
  transition: background 250ms var(--ease), color 250ms var(--ease), transform 250ms var(--ease);
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn-whatsapp-dark:hover {
  background: var(--platinum);
  color: var(--black);
  transform: translateY(-2px);
}

.btn-whatsapp-dark .icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}

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

/* ── Section Fade (top edge) ── */
.section-fade::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(to bottom, var(--black), transparent);
  pointer-events: none;
  z-index: 1;
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}