/* ═══════════════════════════════════════════════════════════════════
   EvolutionX360 — styles.css
   Brand tokens, reset, layout, components, animations
═══════════════════════════════════════════════════════════════════ */

/* ── Custom Properties ──────────────────────────────────────────── */
:root {
  --bg:           #0D1117;
  --accent:       #00E5C7;
  --accent-dark:  #00bfa8;
  --accent-glow:  rgba(0, 229, 199, 0.18);
  --text:         #FFFFFF;
  --text-sec:     #A0ADB8;
  --surface:      #161B22;
  --surface-2:    #1C2333;
  --border:       rgba(255, 255, 255, 0.07);

  --font-head:    'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'DM Mono', monospace;

  --radius:       12px;
  --radius-lg:    20px;
  --radius-pill:  999px;

  --nav-h:        72px;
  --transition:   200ms ease;
  --transition-m: 350ms ease;

  --shadow-card:  0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.5);
}

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

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: hidden;
}

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

/* ── Typography ─────────────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

/* ── Layout Utilities ───────────────────────────────────────────── */
.container {
  width: min(100%, 1200px);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

.section {
  padding-block: clamp(5rem, 10vw, 8rem);
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  text-align: center;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-sec);
  text-align: center;
  margin-top: -2rem;
  margin-bottom: 3rem;
}

/* ── Buttons ────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  transition: transform var(--transition), filter var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.btn:hover {
  transform: scale(1.03);
  filter: brightness(1.1);
}

.btn:active { transform: scale(0.98); }

.btn-accent {
  background: var(--accent);
  color: #0D1117;
  box-shadow: 0 0 0 0 var(--accent-glow);
}

.btn-accent:hover {
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-dark {
  background: var(--bg);
  color: var(--text);
  border: 2px solid var(--bg);
}

.btn-dark:hover {
  background: rgba(13, 17, 23, 0.85);
  border-color: rgba(13, 17, 23, 0.85);
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: 1.05rem;
}

/* ── Logo ───────────────────────────────────────────────────────── */
.logo-img {
  height: 40px;
  width: auto;
}

/* ═══════════════════════════════════════════════════════════════════
   NAVBAR
═══════════════════════════════════════════════════════════════════ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  transition: background var(--transition-m), backdrop-filter var(--transition-m), box-shadow var(--transition-m);
}

.navbar.scrolled {
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: min(100%, 1200px);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
  gap: 1.5rem;
}

.nav-logo { flex-shrink: 0; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-sec);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover {
  color: var(--text);
  background: var(--surface);
}

.nav-cta {
  margin-left: 0.75rem;
  padding: 0.55rem 1.25rem;
  font-size: 0.875rem;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  border-radius: 8px;
  transition: background var(--transition);
}

.nav-toggle:hover { background: var(--surface); }

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition-m), opacity var(--transition-m);
  transform-origin: center;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ═══════════════════════════════════════════════════════════════════
   HERO
═══════════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100svh;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

/* Animated gradient background */
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0, 229, 199, 0.12) 0%, transparent 65%),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(0, 229, 199, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 20% 90%, rgba(0, 100, 200, 0.08) 0%, transparent 60%),
    var(--bg);
  animation: heroBgShift 10s ease-in-out infinite alternate;
}

@keyframes heroBgShift {
  0%   { background-position: 50% 0%, 80% 80%, 20% 90%; }
  100% { background-position: 50% 10%, 75% 75%, 25% 85%; }
}

/* Subtle grid overlay */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 50% at 50% 40%, black 0%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 820px;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.hero-headline {
  font-size: clamp(2.75rem, 7vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #fff 40%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.hero-subheadline {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--text-sec);
  max-width: 560px;
  line-height: 1.6;
}

/* Hero scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-sec);
  animation: bounce 2s ease-in-out infinite;
  z-index: 1;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.5; }
  50%       { transform: translateX(-50%) translateY(8px); opacity: 1; }
}

/* ── Hero entrance animations ──── */
.animate-fade-in {
  opacity: 0;
  animation: fadeIn 0.8s ease forwards 0.2s;
}

.animate-slide-up {
  opacity: 0;
  transform: translateY(20px);
  animation: slideUp 0.8s ease forwards 0.5s;
}

.animate-pop-in {
  opacity: 0;
  transform: scale(0.9);
  animation: popIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards 0.85s;
}

@keyframes fadeIn  { to { opacity: 1; } }
@keyframes slideUp { to { opacity: 1; transform: translateY(0); } }
@keyframes popIn   { to { opacity: 1; transform: scale(1); } }

/* ═══════════════════════════════════════════════════════════════════
   SERVICIOS
═══════════════════════════════════════════════════════════════════ */
.servicios { background: var(--surface); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform var(--transition-m), box-shadow var(--transition-m), border-color var(--transition-m);
  box-shadow: var(--shadow-card);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent-glow);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.card-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--accent-glow);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  padding: 10px;
}

.card-icon svg { width: 100%; height: 100%; }

.card-title {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 600;
  flex: 1;
  line-height: 1.3;
}

.card-toggle {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sec);
  transition: color var(--transition), background var(--transition), transform var(--transition-m);
}

.card-toggle svg { width: 16px; height: 16px; }

.card-toggle:hover { background: var(--surface); color: var(--accent); }

.card-toggle[aria-expanded="true"] {
  color: var(--accent);
  transform: rotate(180deg);
}

.card-desc {
  font-size: 0.875rem;
  color: var(--text-sec);
  line-height: 1.5;
}

/* Accordion */
.card-detail {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease;
  opacity: 0;
  border-top: 1px solid var(--border);
  padding-top: 0;
}

.card-detail:not([hidden]) {
  max-height: 200px;
  opacity: 1;
  padding-top: 0.875rem;
}

.card-detail[hidden] { display: block !important; } /* override hidden to allow animation */

.card-detail p {
  font-size: 0.875rem;
  color: var(--text-sec);
  line-height: 1.6;
}

/* ═══════════════════════════════════════════════════════════════════
   CÓMO TRABAJAMOS
═══════════════════════════════════════════════════════════════════ */
.como-trabajamos { background: var(--bg); }

.stepper {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0;
  counter-reset: step;
  position: relative;
}

.step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
}

.step-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  margin-bottom: 1.25rem;
}

.step-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sec);
  position: relative;
  z-index: 1;
  transition: background var(--transition-m), border-color var(--transition-m), color var(--transition-m), box-shadow var(--transition-m);
  flex-shrink: 0;
}

.step-icon svg { width: 24px; height: 24px; }

.step.active .step-icon {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 0 6px rgba(0, 229, 199, 0.08);
}

/* Connecting line */
.step-line {
  position: absolute;
  top: 32px;
  left: calc(50% + 32px);
  width: calc(100% - 64px);
  height: 2px;
  background: var(--border);
  z-index: 0;
}

/* Last step has no line (no .step-line rendered via HTML) */

.step-content { padding-inline: 0.75rem; }

.step-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.25rem;
}

.step-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.step-desc {
  font-size: 0.875rem;
  color: var(--text-sec);
  line-height: 1.5;
}

/* ── Scroll-reveal for steps ──── */
.reveal-step {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-step[data-step="1"] { transition-delay: 0.0s; }
.reveal-step[data-step="2"] { transition-delay: 0.15s; }
.reveal-step[data-step="3"] { transition-delay: 0.30s; }
.reveal-step[data-step="4"] { transition-delay: 0.45s; }

/* ═══════════════════════════════════════════════════════════════════
   POR QUÉ EX360
═══════════════════════════════════════════════════════════════════ */
.por-que { background: var(--surface); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

/* Center last row when 5 items in 3-col grid */
.features-grid > :nth-child(4) { grid-column: 1; }
.features-grid > :nth-child(5) { grid-column: 2; }

@media (min-width: 768px) {
  .features-grid > :nth-child(4) { grid-column: auto; }
  .features-grid > :nth-child(5) { grid-column: auto; }
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  /* 5 cards: last two centered */
  .features-grid::after {
    content: '';
  }
}

/* Simpler: use auto-fill and let CSS handle it */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  justify-items: stretch;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.875rem;
  transition: transform var(--transition-m), box-shadow var(--transition-m), border-color var(--transition-m);
  box-shadow: var(--shadow-card);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(0, 229, 199, 0.2);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  padding: 11px;
}

.feature-icon svg { width: 100%; height: 100%; }

.feature-title {
  font-size: 1.05rem;
  font-weight: 600;
}

.feature-desc {
  font-size: 0.875rem;
  color: var(--text-sec);
  line-height: 1.55;
}

/* ═══════════════════════════════════════════════════════════════════
   REFERIDOS
═══════════════════════════════════════════════════════════════════ */
.referidos {
  background: var(--accent);
  color: var(--bg);
  position: relative;
  overflow: hidden;
}

/* CSS-only geometric pattern */
.referidos-pattern {
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      45deg,
      rgba(0, 0, 0, 0.04) 0px,
      rgba(0, 0, 0, 0.04) 1px,
      transparent 1px,
      transparent 28px
    ),
    repeating-linear-gradient(
      -45deg,
      rgba(0, 0, 0, 0.04) 0px,
      rgba(0, 0, 0, 0.04) 1px,
      transparent 1px,
      transparent 28px
    );
  pointer-events: none;
}

.referidos-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
}

.referidos-badge {
  display: inline-flex;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-pill);
  background: rgba(13, 17, 23, 0.12);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bg);
}

.referidos-title {
  color: var(--bg);
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 2.75rem);
}

.referidos-copy {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(13, 17, 23, 0.75);
  max-width: 560px;
  line-height: 1.65;
}

.referidos-copy strong { color: var(--bg); }

/* ═══════════════════════════════════════════════════════════════════
   CONTACTO
═══════════════════════════════════════════════════════════════════ */
.contacto { background: var(--bg); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
  margin-top: 1rem;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-icon {
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.contact-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.2rem;
}

.contact-value {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text);
  transition: color var(--transition);
}

a.contact-value:hover { color: var(--accent); }

/* Social */
.social-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.social-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-sec);
  background: var(--surface);
  transition: color var(--transition), border-color var(--transition), background var(--transition), transform var(--transition);
}

.social-link:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--surface-2);
  transform: translateY(-2px);
}

.social-icon { width: 18px; height: 18px; }

.contact-cta {
  display: inline-flex;
  align-items: center;
}

/* ═══════════════════════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════════════════════ */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding-block: 2.25rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-sec);
  text-align: center;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer-social-link {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sec);
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.footer-social-link svg { width: 18px; height: 18px; }
.footer-social-link:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-glow); }

/* ═══════════════════════════════════════════════════════════════════
   FLOATING BUTTON
═══════════════════════════════════════════════════════════════════ */
.floating-btn {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.875rem 1.375rem;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 4px 20px rgba(0, 229, 199, 0.35);
  transition: transform var(--transition), filter var(--transition), box-shadow var(--transition), opacity var(--transition);
  animation: pulse 2.5s ease-in-out infinite;
}

.floating-btn:hover {
  transform: scale(1.05);
  filter: brightness(1.08);
  box-shadow: 0 8px 32px rgba(0, 229, 199, 0.45);
  animation: none;
}

.floating-btn.hidden {
  opacity: 0;
  pointer-events: none;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(0, 229, 199, 0.35); }
  50%       { box-shadow: 0 4px 32px rgba(0, 229, 199, 0.6); }
}

/* ═══════════════════════════════════════════════════════════════════
   SCROLL REVEAL (generic)
═══════════════════════════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

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

/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE — TABLET (≤ 1024px)
═══════════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-grid > :nth-child(5) {
    grid-column: 1 / -1;
    max-width: 420px;
    justify-self: center;
  }

  .stepper {
    flex-direction: column;
    align-items: flex-start;
    gap: 2rem;
  }

  .step { flex-direction: row; align-items: flex-start; text-align: left; flex: none; width: 100%; }

  .step-indicator { flex-direction: column; align-items: center; width: auto; margin-bottom: 0; margin-right: 1.25rem; }

  .step-line {
    position: static;
    width: 2px;
    height: 40px;
    top: auto; left: auto;
    margin-top: 8px;
  }

  .step-content { padding-inline: 0; }

  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}

/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE — MOBILE (≤ 768px)
═══════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  /* Nav */
  .nav-toggle { display: flex; }

  .nav-menu {
    display: none;
    flex-direction: column;
    align-items: stretch;
    position: fixed;
    inset: var(--nav-h) 0 0 0;
    background: rgba(13, 17, 23, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 1.5rem;
    gap: 0.5rem;
    overflow-y: auto;
  }

  .nav-menu.open { display: flex; }

  .nav-link {
    font-size: 1.1rem;
    padding: 0.875rem 1rem;
    border-radius: var(--radius);
    border-bottom: 1px solid var(--border);
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 0.5rem;
    padding: 0.875rem 1rem;
    text-align: center;
    border-radius: var(--radius);
    justify-content: center;
  }

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

  /* Features */
  .features-grid { grid-template-columns: 1fr; }
  .features-grid > :nth-child(5) { grid-column: auto; max-width: none; justify-self: auto; }

  /* Hero */
  .hero-headline { font-size: clamp(2.25rem, 10vw, 3.5rem); }

  /* Footer */
  .footer-inner { flex-direction: column; align-items: center; text-align: center; gap: 1rem; }

  /* Floating btn label — hide on very small screens */
  @media (max-width: 400px) {
    .floating-btn-label { display: none; }
    .floating-btn { padding: 1rem; border-radius: 50%; }
  }
}

/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE — SMALL MOBILE (≤ 400px)
═══════════════════════════════════════════════════════════════════ */
@media (max-width: 400px) {
  .floating-btn-label { display: none; }
  .floating-btn { padding: 1rem; border-radius: 50%; }
}

/* ═══════════════════════════════════════════════════════════════════
   REDUCED MOTION
═══════════════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal, .reveal-step { opacity: 1; transform: none; }
  .animate-fade-in, .animate-slide-up, .animate-pop-in {
    animation: none;
    opacity: 1;
    transform: none;
  }
}