/* ═══════════════════════════════════════════════════════════════
   IMPULSA DIGITAL — style.css
   ═══════════════════════════════════════════════════════════════ */

/* ── VARIABLES ────────────────────────────────────────────────── */
:root {
  --bg:           #111111;
  --bg-alt:       #1a1a1a;
  --bg-deep:      #0d0d0d;
  --text:         #f2f2f2;
  --text-muted:   #777777;
  --accent:       #c9a341;
  --accent-light: rgba(201, 163, 65, 0.12);
  --accent-border:rgba(201, 163, 65, 0.22);
  --border:       rgba(255, 255, 255, 0.06);

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Poppins', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;

  --container:    1200px;
  --pad-section:  128px;
  --radius:       12px;
  --radius-sm:    8px;

  --ease:         cubic-bezier(0.4, 0, 0.2, 1);
  --transition:   0.28s var(--ease);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img  { max-width: 100%; display: block; }
a    { color: inherit; text-decoration: none; }
ul   { list-style: none; }
button { cursor: pointer; }

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  font-weight: 600;
}

/* ── CONTAINER ────────────────────────────────────────────────── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
}

/* ── BUTTONS ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 13px 26px;
  border-radius: 7px;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  border: none;
  white-space: nowrap;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--accent);
  color: #111111;
  font-weight: 600;
}
.btn--primary:hover {
  background: #d6ae4e;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(201, 163, 65, 0.28);
}

.btn--secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(242, 242, 242, 0.18);
}
.btn--secondary:hover {
  border-color: var(--accent-border);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn--full { width: 100%; justify-content: center; }

.btn--submit { font-size: 0.95rem; padding: 15px 28px; margin-top: 4px; }

/* ── SECTION SHARED ───────────────────────────────────────────── */
.section { padding: var(--pad-section) 0; }

.section__header {
  text-align: center;
  margin-bottom: 72px;
}

.section__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 16px;
}
.section__label::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 1px;
  background: var(--accent);
  opacity: 0.55;
}

.section__title {
  font-size: clamp(2rem, 3.5vw, 2.9rem);
  color: var(--text);
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.section__subtitle {
  font-size: 0.975rem;
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.75;
}

/* ── ANIMATIONS ───────────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes pulseLine {
  0%, 100% { opacity: 0.35; }
  50%       { opacity: 0.85; }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}
.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── HEADER ───────────────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background var(--transition), border-color var(--transition);
}
.header.scrolled {
  background: rgba(17, 17, 17, 0.88);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border-bottom: 1px solid var(--border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  transition: color var(--transition);
  z-index: 101;
}
.header__logo:hover { color: var(--accent); }

.logo-img { height: 34px; width: auto; }
.logo-text { display: block; }

/* Nav */
.nav__list {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav__link {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-muted);
  transition: color var(--transition);
  position: relative;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav__link:hover,
.nav__link.active { color: var(--text); }
.nav__link:hover::after,
.nav__link.active::after { width: 100%; }

.nav__link.nav__cta {
  color: var(--accent);
  border: 1px solid var(--accent-border);
  padding: 8px 18px;
  border-radius: 6px;
  font-weight: 500;
}
.nav__link.nav__cta::after { display: none; }
.nav__link.nav__cta:hover {
  background: var(--accent);
  color: #111;
  border-color: var(--accent);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
  z-index: 101;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
  transform-origin: center;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(4.7px, 4.7px); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(4.7px, -4.7px); }

/* ── HERO ─────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  overflow: hidden;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}

.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(201, 163, 65, 0.06) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
  max-width: 920px;
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeInUp 0.9s var(--ease) forwards 0.15s;
}

.hero__title {
  font-size: clamp(3rem, 7.5vw, 6.2rem);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin-bottom: 30px;
  opacity: 0;
  animation: fadeInUp 0.9s var(--ease) forwards 0.35s;
}

.hero__title em {
  font-style: italic;
  color: var(--accent);
  position: relative;
}
.hero__title em::after {
  content: '';
  position: absolute;
  bottom: 6px; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  opacity: 0.35;
  border-radius: 2px;
}

.hero__subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin: 0 auto 48px;
  max-width: 520px;
  opacity: 0;
  animation: fadeInUp 0.9s var(--ease) forwards 0.55s;
}

.hero__actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeInUp 0.9s var(--ease) forwards 0.72s;
}

.hero__br { display: inline; }

/* Scroll hint */
.hero__scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 2;
  opacity: 0;
  animation: fadeIn 1s ease forwards 1.6s;
}
.hero__scroll-hint span {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.scroll-line {
  width: 1px;
  height: 56px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: pulseLine 2.2s ease infinite;
}

/* ── SERVICES ─────────────────────────────────────────────────── */
.services { background: var(--bg); }

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

/* Center the lone 7th card when it's the only item in its row */
.service-card:last-child:nth-child(3n + 1) {
  grid-column: 2 / 3;
}

.service-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px;
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
}
.service-card:hover {
  border-color: var(--accent-border);
  transform: translateY(-5px);
  background: #1d1d1d;
}

.service-card__icon {
  width: 44px; height: 44px;
  margin-bottom: 22px;
  color: var(--accent);
}
.service-card__icon svg { width: 100%; height: 100%; }

.service-card__title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

.service-card__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── PROCESS ──────────────────────────────────────────────────── */
.process { background: var(--bg-alt); }

.process__steps {
  max-width: 620px;
  margin: 0 auto;
}

.process__step {
  display: flex;
  gap: 36px;
}

.process__step-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  width: 72px;
}

.process__number {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  font-weight: 600;
  color: var(--accent);
  opacity: 0.35;
  line-height: 1.2;
  letter-spacing: -0.03em;
  transition: opacity var(--transition);
}
.process__step:hover .process__number { opacity: 0.7; }

.process__line {
  width: 1px;
  flex: 1;
  min-height: 48px;
  background: linear-gradient(to bottom, rgba(201, 163, 65, 0.25), rgba(201, 163, 65, 0.03));
  margin-top: 12px;
  margin-bottom: 4px;
}

.process__content {
  padding: 0 0 52px;
}
.process__step:last-child .process__content { padding-bottom: 0; }

.process__content h3 {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}
.process__content p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ── WHY US / STATS ───────────────────────────────────────────── */
.why-us { background: var(--bg); }

.stats__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.stat-card {
  background: var(--bg-alt);
  padding: 52px 44px;
  transition: background var(--transition);
}
.stat-card:hover { background: #1d1d1d; }

.stat-card + .stat-card {
  border-left: 1px solid var(--border);
}

.stat-card__number {
  font-family: var(--font-mono);
  font-size: 3.2rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 20px;
  display: flex;
  align-items: baseline;
  gap: 3px;
}

.stat-card__unit,
.stat-card__prefix {
  font-size: 1.4rem;
  font-weight: 500;
}

.stat-card__title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

.stat-card__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── PROJECTS ─────────────────────────────────────────────────── */
.projects { background: var(--bg-alt); }

.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.project-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}
.project-card:hover {
  border-color: var(--accent-border);
  transform: translateY(-5px);
}

/* Browser mockup */
.browser-mockup { background: #181818; }

.browser-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 16px;
  background: #161616;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.browser-dots { display: flex; gap: 6px; }

.bdot {
  width: 10px; height: 10px;
  border-radius: 50%;
  opacity: 0.85;
}
.bdot--red    { background: #ff5f57; }
.bdot--yellow { background: #febc2e; }
.bdot--green  { background: #28c840; }

.browser-url {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: #4a4a4a;
  background: #202020;
  padding: 4px 14px;
  border-radius: 4px;
  flex: 1;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.browser-screen {
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
}

.browser-screen.bienestarmental {
  background: linear-gradient(135deg, #1a2635 0%, #0f1a27 100%);
}
.browser-screen.nailsbyvanesa {
  background: linear-gradient(135deg, #281828 0%, #180e18 100%);
}

.mockup-inner { text-align: center; }

.mockup-badge {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--accent);
  color: #111;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
}

.mockup-name {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 4px;
}
.mockup-category {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.project-card__body { padding: 26px 30px 30px; }

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent-border);
  padding: 3px 10px;
  border-radius: 4px;
}

.project-card__body h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}
.project-card__body p {
  font-size: 0.865rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  transition: gap var(--transition);
}
.project-link:hover { gap: 11px; }
.project-link svg { flex-shrink: 0; }

/* ── TESTIMONIALS ─────────────────────────────────────────────── */
.testimonials { background: var(--bg); }

.testimonial-wrap {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}

.testimonial-decoration {
  color: var(--accent);
  opacity: 0.2;
  margin-bottom: 28px;
}

.testimonial__text {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  font-style: italic;
  font-weight: 400;
  color: var(--text);
  line-height: 1.45;
  margin-bottom: 44px;
  letter-spacing: -0.01em;
}

.testimonial__footer {
  display: inline-flex;
  align-items: center;
  gap: 16px;
}

.testimonial__avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: #111;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.testimonial__meta { text-align: left; }

.testimonial__name {
  display: block;
  font-style: normal;
  font-weight: 500;
  font-size: 0.95rem;
  margin-bottom: 3px;
}
.testimonial__role {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.testimonial__role a {
  color: var(--accent);
  transition: opacity var(--transition);
}
.testimonial__role a:hover { opacity: 0.75; }

/* ── CONTACT ──────────────────────────────────────────────────── */
.contact { background: var(--bg-alt); }

.contact__layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 80px;
  align-items: start;
}

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.form-group label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.88rem;
  outline: none;
  width: 100%;
  transition: border-color var(--transition), background var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  background: rgba(201, 163, 65, 0.04);
}

.form-group select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23777' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 38px;
}
.form-group select option { background: #1a1a1a; color: var(--text); }

.form-group textarea { resize: vertical; min-height: 118px; }

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(119, 119, 119, 0.6); }

/* Contact info */
.contact__info {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding-top: 6px;
}

.contact-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.contact-item__icon {
  width: 40px; height: 40px;
  flex-shrink: 0;
  background: var(--accent-light);
  border: 1px solid var(--accent-border);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  color: var(--accent);
}
.contact-item__icon svg { width: 100%; height: 100%; }

.contact-item__label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 3px;
  letter-spacing: 0.04em;
}
.contact-item__value {
  display: block;
  font-size: 0.875rem;
  color: var(--text);
  font-weight: 500;
  transition: color var(--transition);
}
a.contact-item__value:hover { color: var(--accent); }

.contact-cta {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  margin-top: 4px;
}
.contact-cta p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

/* ── FOOTER ───────────────────────────────────────────────────── */
.footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
}

.footer__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 56px;
  padding: 64px 0 52px;
}

.footer__brand { flex: 1; }

.footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 14px;
  transition: color var(--transition);
}
.footer__logo:hover { color: var(--accent); }

.footer__tagline {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 6px;
}
.footer__location {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #3a3a3a;
  letter-spacing: 0.05em;
}

.footer__nav {
  display: flex;
  gap: 56px;
}

.footer__col h4 {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.footer__col ul { display: flex; flex-direction: column; gap: 12px; }
.footer__col a {
  font-size: 0.85rem;
  color: #4a4a4a;
  transition: color var(--transition);
}
.footer__col a:hover { color: var(--accent); }

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer__copy {
  font-size: 0.78rem;
  color: #3a3a3a;
}
.footer__made {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: #2d2d2d;
  letter-spacing: 0.05em;
}

/* ── WHATSAPP FLOAT ───────────────────────────────────────────── */
.whatsapp-float {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 90;
  width: 56px; height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 22px rgba(37, 211, 102, 0.32);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.whatsapp-float:hover {
  background: #1fb858;
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 10px 36px rgba(37, 211, 102, 0.42);
}

/* ── RESPONSIVE ───────────────────────────────────────────────── */

/* Tablet */
@media (max-width: 1024px) {
  :root { --pad-section: 96px; }

  .container { padding: 0 28px; }

  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .service-card:last-child:nth-child(3n + 1) { grid-column: auto; }

  .contact__layout {
    grid-template-columns: 1fr;
    gap: 52px;
  }
  .contact__info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .contact-cta { grid-column: 1 / -1; }

  .footer__nav { gap: 36px; }
}

/* Mobile */
@media (max-width: 768px) {
  :root { --pad-section: 76px; }

  .container { padding: 0 20px; }

  /* Nav mobile overlay */
  .hamburger { display: flex; }

  .header__nav {
    position: fixed;
    inset: 0;
    background: rgba(13, 13, 13, 0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
  }
  .header__nav.open {
    opacity: 1;
    pointer-events: all;
  }

  .nav__list {
    flex-direction: column;
    gap: 28px;
    text-align: center;
  }
  .nav__link { font-size: 1.4rem; color: var(--text); }
  .nav__link::after { display: none; }
  .nav__link.nav__cta { font-size: 1rem; }

  /* Hero */
  .hero__br { display: none; }
  .hero__title { font-size: clamp(2.4rem, 11vw, 3.6rem); }

  /* Services */
  .services__grid { grid-template-columns: 1fr; }

  /* Process */
  .process__step { gap: 24px; }
  .process__step-left { width: 56px; }
  .process__number { font-size: 1.8rem; }

  /* Stats */
  .stats__grid { grid-template-columns: 1fr; border-radius: var(--radius); }
  .stat-card + .stat-card { border-left: none; border-top: 1px solid var(--border); }
  .stat-card { padding: 40px 32px; }

  /* Projects */
  .projects__grid { grid-template-columns: 1fr; }

  /* Contact */
  .form-row { grid-template-columns: 1fr; }
  .contact__info { grid-template-columns: 1fr; }

  /* Footer */
  .footer__top { flex-direction: column; gap: 40px; }
  .footer__nav { flex-wrap: wrap; gap: 32px; }
  .footer__bottom { flex-direction: column; gap: 8px; text-align: center; }

  /* WhatsApp */
  .whatsapp-float { bottom: 24px; right: 20px; width: 52px; height: 52px; }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero__actions .btn { justify-content: center; }
  .testimonial__text { font-size: 1.35rem; }
  .section__title { font-size: 1.85rem; }
}