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

:root {
  --bg:         #090d1a;
  --bg2:        #0f1629;
  --card:       #141b30;
  --border:     rgba(255,255,255,.07);
  --accent:     #00d4aa;
  --accent2:    #7c3aed;
  --accentRed:  #f97316;
  --text:       #e2e8f0;
  --muted:      #8892a4;
  --white:      #ffffff;
  --radius:     16px;
  --shadow:     0 20px 60px rgba(0,0,0,.4);
  --font:       'Inter', sans-serif;
  --fontAlt:    'Space Grotesk', sans-serif;
  --nav-h:      72px;
  --transition: .3s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; }

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

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

/* ── Utility ────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .75rem; font-weight: 600; letter-spacing: .12em;
  text-transform: uppercase; color: var(--accent);
  background: rgba(0,212,170,.1); border: 1px solid rgba(0,212,170,.2);
  padding: 6px 14px; border-radius: 99px; margin-bottom: 16px;
}
.section-label::before {
  content: ''; width: 6px; height: 6px;
  border-radius: 50%; background: var(--accent);
}

h2.section-title {
  font-family: var(--fontAlt);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700; line-height: 1.15;
  color: var(--white);
}
h2.section-title span { color: var(--accent); }

.section-desc {
  font-size: 1.05rem; color: var(--muted);
  max-width: 600px; margin-top: 12px; line-height: 1.75;
}

/* ── Buttons ────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 10px;
  font-size: .95rem; font-weight: 600; cursor: pointer;
  transition: var(--transition); border: none; white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #00b08d);
  color: #000;
  box-shadow: 0 0 30px rgba(0,212,170,.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 45px rgba(0,212,170,.5);
}

.btn-ghost {
  background: transparent; color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: rgba(255,255,255,.05);
  border-color: rgba(255,255,255,.2);
}

.btn-outline {
  background: transparent; color: var(--accent);
  border: 1px solid rgba(0,212,170,.4);
}
.btn-outline:hover { background: rgba(0,212,170,.08); }

/* ── Navigation ─────────────────────────────────────── */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-h);
  display: flex; align-items: center;
  transition: var(--transition);
}
#navbar.scrolled {
  background: rgba(9,13,26,.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 30px rgba(0,0,0,.3);
}
#navbar .container {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%;
}

.nav-logo {
  font-family: var(--fontAlt);
  font-size: 1.4rem; font-weight: 700;
  color: var(--white);
  display: flex; align-items: center; gap: 8px;
}
.nav-logo span { color: var(--accent); }
.nav-logo .logo-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}

.nav-links {
  display: flex; align-items: center; gap: 4px; list-style: none;
}
.nav-links > li { position: relative; }
.nav-links > li > a {
  padding: 8px 14px; border-radius: 8px;
  font-size: .9rem; font-weight: 500;
  color: var(--muted); transition: var(--transition);
  display: flex; align-items: center; gap: 4px;
}
.nav-links > li > a:hover,
.nav-links > li > a.active {
  color: var(--white);
  background: rgba(255,255,255,.06);
}

/* Dropdown */
.has-dropdown > .dropdown {
  position: absolute; top: calc(100% + 8px); left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); min-width: 200px;
  padding: 8px; opacity: 0; pointer-events: none;
  transition: var(--transition);
  box-shadow: var(--shadow);
}
.has-dropdown:hover > .dropdown {
  opacity: 1; pointer-events: all;
  transform: translateX(-50%) translateY(0);
}
.dropdown a {
  display: block; padding: 10px 14px; border-radius: 8px;
  font-size: .875rem; color: var(--muted); transition: var(--transition);
}
.dropdown a:hover { color: var(--white); background: rgba(255,255,255,.05); }

.chevron {
  width: 14px; height: 14px; opacity: .5;
  transition: transform var(--transition);
}
.has-dropdown:hover .chevron { transform: rotate(180deg); }

.nav-cta { margin-left: 12px; }

/* Hamburger */
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 8px; border-radius: 8px;
  background: transparent; border: none;
}
.nav-hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text); border-radius: 2px;
  transition: var(--transition);
}

/* Mobile menu */
.nav-mobile {
  display: none; position: fixed; inset: 0; top: var(--nav-h);
  background: rgba(9,13,26,.97); backdrop-filter: blur(20px);
  z-index: 999; padding: 24px;
  flex-direction: column; gap: 8px;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  display: block; padding: 14px 16px; border-radius: 10px;
  font-size: 1.05rem; font-weight: 500; color: var(--text);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.nav-mobile a:hover { color: var(--accent); border-color: rgba(0,212,170,.3); }

/* ── Hero ───────────────────────────────────────────── */
#hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: calc(var(--nav-h) + 60px) 0 80px;
  position: relative; overflow: hidden;
}

/* Imagen de fondo difuminada */
#hero::before {
  content: '';
  position: absolute; inset: 0;
  background: url('../images/banner.jpg') center center / cover no-repeat;
  filter: blur(3px) brightness(.45) saturate(.8);
  transform: scale(1.05); /* evita bordes blancos por el blur */
}

/* Degradado encima para fundir con las secciones de color del acento */
#hero::after {
  content: '';
  position: absolute; inset: 0;
  background:
    linear-gradient(to bottom, rgba(9,13,26,.3) 0%, rgba(9,13,26,.55) 70%, var(--bg2) 100%),
    radial-gradient(ellipse 70% 60% at 20% 50%, rgba(0,212,170,.1) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 40%, rgba(124,58,237,.08) 0%, transparent 60%);
}

.hero-content { position: relative; z-index: 1; max-width: 750px; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(0,212,170,.08); border: 1px solid rgba(0,212,170,.25);
  padding: 8px 16px; border-radius: 99px; margin-bottom: 28px;
  font-size: .85rem; font-weight: 500; color: var(--accent);
}
.hero-badge-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .5; transform: scale(.8); }
}

.hero-title {
  font-family: var(--fontAlt);
  font-size: clamp(2.6rem, 7vw, 5rem);
  font-weight: 800; line-height: 1.08;
  color: var(--white); margin-bottom: 20px;
}
.hero-title .accent  { color: var(--accent); }
.hero-title .accent2 { color: #a78bfa; }

.hero-desc {
  font-size: 1.15rem; color: var(--muted);
  max-width: 540px; line-height: 1.75; margin-bottom: 36px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-stats {
  display: flex; gap: 40px; margin-top: 56px; flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-num {
  font-family: var(--fontAlt); font-size: 2rem; font-weight: 700;
  color: var(--white); line-height: 1;
}
.stat-num span { color: var(--accent); }
.stat-label {
  font-size: .8rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: .08em;
}


/* ── Section spacer ─────────────────────────────────── */
section { padding: 100px 0; }

/* ── Products ───────────────────────────────────────── */
#productos { background: var(--bg2); }

.products-header { text-align: center; margin-bottom: 60px; }
.products-header .section-desc { margin: 12px auto 0; }

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  display: flex; flex-direction: column; gap: 20px;
  transition: var(--transition);
  position: relative; overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  opacity: 0; transition: var(--transition);
}
.product-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,212,170,.2);
  box-shadow: 0 30px 70px rgba(0,0,0,.4), 0 0 0 1px rgba(0,212,170,.1);
}
.product-card:hover::before { opacity: 1; }

.product-card.featured {
  border-color: rgba(0,212,170,.3);
  background: linear-gradient(135deg, rgba(0,212,170,.05), rgba(124,58,237,.05));
}
.product-card.featured::before { opacity: 1; }

.featured-badge {
  position: absolute; top: 20px; right: 20px;
  background: linear-gradient(135deg, var(--accent), #00b08d);
  color: #000; font-size: .7rem; font-weight: 700;
  padding: 4px 12px; border-radius: 99px;
  text-transform: uppercase; letter-spacing: .08em;
}

.product-icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  background: rgba(0,212,170,.1);
  border: 1px solid rgba(0,212,170,.2);
}

.product-card h3 {
  font-family: var(--fontAlt); font-size: 1.35rem; font-weight: 700;
  color: var(--white);
}
.product-card p { font-size: .9rem; color: var(--muted); line-height: 1.7; }

.product-features {
  list-style: none; display: flex; flex-direction: column; gap: 10px;
}
.product-features li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: .875rem; color: var(--muted);
}
.product-features li::before {
  content: '✓'; color: var(--accent); font-weight: 700;
  font-size: .85rem; flex-shrink: 0; margin-top: 2px;
}

.product-card .btn { width: 100%; justify-content: center; margin-top: auto; }

/* Packs */
.packs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px; margin-top: 40px;
}
.pack-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 24px 20px;
  text-align: center; transition: var(--transition);
}
.pack-card:hover { border-color: rgba(249,115,22,.3); transform: translateY(-3px); }
.pack-card .pack-icon { font-size: 2rem; margin-bottom: 10px; }
.pack-card h4 { font-size: .95rem; font-weight: 600; color: var(--white); margin-bottom: 6px; }
.pack-card p  { font-size: .8rem; color: var(--muted); }
.pack-card img {
  width: 100%; aspect-ratio: 4/3; object-fit: cover;
  border-radius: 8px; margin-top: 16px;
}

/* ── Features ───────────────────────────────────────── */
#features { background: var(--bg); }

.features-header { margin-bottom: 64px; }

.features-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 32px; align-items: start;
}

.feature-item {
  display: flex; gap: 20px; align-items: flex-start;
  padding: 28px; border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
  transition: var(--transition);
  opacity: 0; transform: translateY(24px);
}
.feature-item.visible { opacity: 1; transform: translateY(0); }
.feature-item:hover { border-color: rgba(0,212,170,.2); }

.feature-icon {
  width: 52px; height: 52px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
}
.fi-green  { background: rgba(0,212,170,.12);  border: 1px solid rgba(0,212,170,.2); }
.fi-purple { background: rgba(124,58,237,.12);  border: 1px solid rgba(124,58,237,.2); }
.fi-orange { background: rgba(249,115,22,.12);  border: 1px solid rgba(249,115,22,.2); }
.fi-blue   { background: rgba(59,130,246,.12);  border: 1px solid rgba(59,130,246,.2); }

.feature-text h3 { font-size: 1rem; font-weight: 600; color: var(--white); margin-bottom: 6px; }
.feature-text p  { font-size: .875rem; color: var(--muted); line-height: 1.65; }

/* ── Calculators ─────────────────────────────────────── */
#calculadoras { background: var(--bg2); }

.calc-header { text-align: center; margin-bottom: 56px; }
.calc-header .section-desc { margin: 12px auto 0; }

.calc-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.calc-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px;
  transition: var(--transition);
}
.calc-card:hover {
  border-color: rgba(0,212,170,.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.calc-card h3 {
  font-family: var(--fontAlt); font-size: 1.1rem; font-weight: 600;
  color: var(--white); margin: 16px 0 8px;
}
.calc-card p { font-size: .875rem; color: var(--muted); margin-bottom: 20px; }

.calc-form { display: flex; flex-direction: column; gap: 12px; }
.calc-row  { display: flex; gap: 10px; }

.calc-input {
  flex: 1; background: rgba(255,255,255,.05); border: 1px solid var(--border);
  border-radius: 8px; padding: 10px 14px; color: var(--text);
  font-size: .875rem; outline: none; transition: var(--transition);
  font-family: var(--font);
}
.calc-input:focus {
  border-color: rgba(0,212,170,.4);
  background: rgba(0,212,170,.04);
}
.calc-input::placeholder { color: var(--muted); }

.calc-select {
  flex: 1; background: rgba(255,255,255,.05); border: 1px solid var(--border);
  border-radius: 8px; padding: 10px 14px; color: var(--text);
  font-size: .875rem; outline: none; cursor: pointer;
  font-family: var(--font); appearance: none;
}
.calc-select option { background: var(--card); }

.calc-btn {
  background: rgba(0,212,170,.12); border: 1px solid rgba(0,212,170,.3);
  color: var(--accent); padding: 10px 16px; border-radius: 8px;
  font-size: .875rem; font-weight: 600; cursor: pointer;
  transition: var(--transition); font-family: var(--font);
}
.calc-btn:hover { background: rgba(0,212,170,.22); }

.calc-result {
  margin-top: 12px; padding: 14px 16px; border-radius: 10px;
  background: rgba(0,212,170,.06); border: 1px solid rgba(0,212,170,.15);
  font-size: .875rem; color: var(--accent); display: none;
  font-weight: 600; text-align: center;
}

/* ── Video ───────────────────────────────────────────── */
#video-section { background: var(--bg); }

.video-wrapper {
  display: grid; grid-template-columns: 1fr 1.3fr;
  gap: 60px; align-items: center;
}
.video-text .section-desc { margin-top: 12px; margin-bottom: 28px; }

.video-highlights { display: flex; flex-direction: column; gap: 14px; margin-top: 24px; }
.video-highlight {
  display: flex; align-items: center; gap: 12px;
  font-size: .875rem; color: var(--muted);
}
.video-highlight::before {
  content: ''; width: 20px; height: 20px; border-radius: 50%;
  background: rgba(0,212,170,.12); border: 1px solid rgba(0,212,170,.3);
  flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%2300d4aa' stroke-width='3'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: center;
}

.video-container {
  position: relative; border-radius: 20px; overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 40px 80px rgba(0,0,0,.5), 0 0 0 1px rgba(0,212,170,.08);
}
.video-container video { width: 100%; display: block; }

.video-overlay {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,.3);
  cursor: pointer; transition: var(--transition);
}
.video-overlay:hover { background: rgba(0,0,0,.15); }
.video-overlay.hidden { display: none; }

.play-btn {
  width: 72px; height: 72px; border-radius: 50%;
  background: rgba(0,212,170,.2); border: 2px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition); backdrop-filter: blur(10px);
}
.play-btn:hover { transform: scale(1.1); background: rgba(0,212,170,.35); }
.play-btn svg  { margin-left: 4px; }

/* ── CTA ─────────────────────────────────────────────── */
#cta {
  background: linear-gradient(135deg, rgba(0,212,170,.08) 0%, rgba(124,58,237,.08) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center; padding: 100px 0;
}
.cta-inner { max-width: 600px; margin: 0 auto; }
#cta h2 {
  font-family: var(--fontAlt); font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700; color: var(--white); margin-bottom: 16px;
}
#cta p { color: var(--muted); font-size: 1.05rem; margin-bottom: 36px; }
.cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ── Contact ─────────────────────────────────────────── */
#contacto { background: var(--bg); }

.contact-grid {
  display: grid; grid-template-columns: 1fr 1.4fr;
  gap: 60px; align-items: start;
}

.contact-info { display: flex; flex-direction: column; gap: 24px; }

.contact-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-item-icon {
  width: 48px; height: 48px; border-radius: 12px; flex-shrink: 0;
  background: rgba(0,212,170,.1); border: 1px solid rgba(0,212,170,.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}
.contact-item h4 { font-size: .85rem; color: var(--muted); margin-bottom: 4px; font-weight: 500; }
.contact-item p  { font-size: .9rem; color: var(--white); font-weight: 500; }

.contact-form {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 40px;
}
.contact-form h3 {
  font-family: var(--fontAlt); font-size: 1.3rem; font-weight: 600;
  color: var(--white); margin-bottom: 24px;
}

.form-row   { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-group label {
  font-size: .8rem; font-weight: 600; color: var(--muted);
  letter-spacing: .04em; text-transform: uppercase;
}
.form-group input,
.form-group textarea,
.form-group select {
  background: rgba(255,255,255,.04); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px 16px; color: var(--text);
  font-size: .9rem; outline: none; transition: var(--transition);
  font-family: var(--font); width: 100%; appearance: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: rgba(0,212,170,.4); background: rgba(0,212,170,.03);
  box-shadow: 0 0 0 3px rgba(0,212,170,.08);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--muted); }
.form-group textarea { resize: vertical; min-height: 120px; }

.form-submit {
  background: linear-gradient(135deg, var(--accent), #00b08d);
  color: #000; font-weight: 700; font-size: .95rem;
  padding: 14px 28px; border-radius: 10px; border: none;
  cursor: pointer; transition: var(--transition);
  width: 100%; font-family: var(--font);
  box-shadow: 0 4px 20px rgba(0,212,170,.3);
}
.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,212,170,.4);
}

.form-success {
  display: none; text-align: center; padding: 20px;
  color: var(--accent); font-weight: 600;
}

.form-error {
  margin-top: 12px; padding: 12px 16px; border-radius: 10px;
  background: rgba(249,115,22,.08); border: 1px solid rgba(249,115,22,.25);
  color: #f97316; font-size: .875rem; text-align: center;
}

.form-submit:disabled {
  opacity: .6; cursor: not-allowed; transform: none;
  box-shadow: none;
}

/* ── Footer ─────────────────────────────────────────── */
#footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
}

.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 48px; margin-bottom: 48px;
}

.footer-brand .nav-logo { font-size: 1.5rem; margin-bottom: 14px; }
.footer-brand p { font-size: .875rem; color: var(--muted); line-height: 1.7; max-width: 300px; }

.footer-col h4 {
  font-size: .8rem; font-weight: 700; color: var(--white);
  text-transform: uppercase; letter-spacing: .1em; margin-bottom: 16px;
}
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: .875rem; color: var(--muted); transition: var(--transition); }
.footer-links a:hover { color: var(--accent); }

.footer-social { display: flex; gap: 10px; margin-top: 20px; }
.social-btn {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--card); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; transition: var(--transition); color: var(--muted);
}
.social-btn:hover {
  border-color: rgba(0,212,170,.3); color: var(--accent); transform: translateY(-2px);
}

.footer-bottom {
  padding-top: 28px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: .8rem; color: var(--muted); }

/* ── Scroll to top ───────────────────────────────────── */
#scroll-top {
  position: fixed; bottom: 28px; right: 28px; z-index: 500;
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--card); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: var(--transition);
  opacity: 0; pointer-events: none; color: var(--muted);
}
#scroll-top.visible { opacity: 1; pointer-events: all; }
#scroll-top:hover {
  border-color: rgba(0,212,170,.3); color: var(--accent); transform: translateY(-3px);
}

/* ── Animations ─────────────────────────────────────── */
.fade-in {
  opacity: 0; transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 900px) {
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }

  .features-grid { grid-template-columns: 1fr; }
  .video-wrapper { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  section { padding: 70px 0; }
  .products-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
  .calc-grid { grid-template-columns: 1fr; }
}