/* =============================================
   WORLD COOL AC SERVICE — style.css
   Aesthetic: Ice-blue luxury with depth
   ============================================= */

/* --- RESET & BASE --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'DM Sans', sans-serif;
  background: #050d1a;
  color: #e8f4fd;
  overflow-x: hidden;
  line-height: 1.6;
}

/* --- CSS VARIABLES --- */
:root {
  --blue-deep: #050d1a;
  --blue-dark: #091426;
  --blue-mid: #0c2040;
  --blue-bright: #0ea5e9;
  --blue-light: #38bdf8;
  --blue-pale: #bae6fd;
  --teal: #06b6d4;
  --white: #f0f9ff;
  --muted: #7da8c4;
  --green-wa: #25d366;
  --gradient: linear-gradient(135deg, var(--blue-bright), var(--teal));
  --card-bg: rgba(12, 32, 64, 0.7);
  --card-border: rgba(14, 165, 233, 0.15);
  --card-hover: rgba(14, 165, 233, 0.08);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --glow: 0 0 30px rgba(14, 165, 233, 0.25);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- UTILITY --- */
.container { max-width: 1160px; margin: 0 auto; padding: 0 1.5rem; }
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- NAVBAR --- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 1.1rem 0;
  transition: var(--transition);
  background: transparent;
}
.navbar.scrolled {
  background: rgba(5, 13, 26, 0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--card-border);
  padding: 0.75rem 0;
  box-shadow: var(--shadow);
}
.nav-container {
  max-width: 1160px; margin: 0 auto; padding: 0 1.5rem;
  display: flex; align-items: center; gap: 2rem;
}
.nav-logo {
  display: flex; align-items: center; gap: 0.5rem;
  text-decoration: none; flex-shrink: 0;
}
.logo-icon { font-size: 1.4rem; animation: spin 8s linear infinite; display:inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }
.logo-text {
  font-family: 'Syne', sans-serif;
  font-size: 1.15rem; color: var(--white); letter-spacing: -0.02em;
}
.logo-text strong { color: var(--blue-light); }
.nav-links {
  list-style: none; display: flex; gap: 0.25rem;
  margin-left: auto;
}
.nav-link {
  text-decoration: none; color: var(--muted);
  font-size: 0.92rem; font-weight: 500;
  padding: 0.45rem 0.9rem; border-radius: 8px;
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--white); background: rgba(14,165,233,0.1); }
.nav-cta {
  display: flex; align-items: center; gap: 0.4rem;
  background: var(--gradient); color: white;
  text-decoration: none; font-weight: 600; font-size: 0.9rem;
  padding: 0.55rem 1.2rem; border-radius: 50px;
  white-space: nowrap; transition: var(--transition);
  box-shadow: 0 4px 16px rgba(14, 165, 233, 0.35);
  flex-shrink: 0;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(14, 165, 233, 0.5); }
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px;
}
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--white); border-radius: 2px;
  transition: var(--transition);
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 1.8rem; border-radius: 50px;
  font-weight: 600; font-size: 1rem; text-decoration: none;
  cursor: pointer; border: none; transition: var(--transition);
  white-space: nowrap;
}
.btn-icon { font-size: 1rem; }
.btn-primary {
  background: var(--gradient); color: white;
  box-shadow: 0 4px 20px rgba(14, 165, 233, 0.4);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(14, 165, 233, 0.55); }
.btn-whatsapp {
  background: var(--green-wa); color: white;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.35);
}
.btn-whatsapp:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(37, 211, 102, 0.5); }
.btn-full { width: 100%; justify-content: center; }

/* --- SECTION SHARED --- */
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-tag {
  display: inline-block;
  background: rgba(14,165,233,0.12);
  color: var(--blue-light); border: 1px solid rgba(14,165,233,0.25);
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.35rem 1rem; border-radius: 50px; margin-bottom: 0.9rem;
}
.section-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 800; line-height: 1.15; color: var(--white);
  margin-bottom: 0.9rem;
}
.section-sub { color: var(--muted); font-size: 1.05rem; max-width: 520px; margin: 0 auto; }

/* =============================================
   HERO SECTION
   ============================================= */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: 7rem 1.5rem 4rem;
  position: relative; overflow: hidden;
  background: var(--blue-deep);
}
.hero-bg {
  position: absolute; inset: 0; overflow: hidden; pointer-events: none;
}
.hero-circle {
  position: absolute; border-radius: 50%;
  filter: blur(70px); opacity: 0.18;
}
.hero-circle-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #0ea5e9, transparent);
  top: -200px; right: -100px;
  animation: float 8s ease-in-out infinite;
}
.hero-circle-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #06b6d4, transparent);
  bottom: -150px; left: -80px;
  animation: float 10s ease-in-out infinite reverse;
}
.hero-circle-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, #38bdf8, transparent);
  top: 50%; left: 40%;
  animation: float 6s ease-in-out infinite 2s;
}
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}
.snowflakes {
  position: absolute; inset: 0;
}
.snowflakes span {
  position: absolute; font-size: 1.2rem; color: rgba(186,230,253,0.1);
  animation: fall linear infinite;
}
.snowflakes span:nth-child(1) { left: 10%; animation-duration: 12s; animation-delay: 0s; font-size: 1rem; }
.snowflakes span:nth-child(2) { left: 25%; animation-duration: 9s; animation-delay: 2s; }
.snowflakes span:nth-child(3) { left: 40%; animation-duration: 14s; animation-delay: 1s; font-size: 0.8rem; }
.snowflakes span:nth-child(4) { left: 55%; animation-duration: 10s; animation-delay: 4s; font-size: 1.4rem; }
.snowflakes span:nth-child(5) { left: 65%; animation-duration: 11s; animation-delay: 0.5s; font-size: 0.9rem; }
.snowflakes span:nth-child(6) { left: 75%; animation-duration: 8s; animation-delay: 3s; }
.snowflakes span:nth-child(7) { left: 85%; animation-duration: 13s; animation-delay: 1.5s; font-size: 1.1rem; }
.snowflakes span:nth-child(8) { left: 92%; animation-duration: 7s; animation-delay: 2.5s; font-size: 0.7rem; }
@keyframes fall {
  0% { top: -5%; opacity: 1; }
  100% { top: 105%; opacity: 0; }
}

.hero-content {
  position: relative; z-index: 2;
  max-width: 600px; flex: 1;
  animation: fadeUp 0.9s ease both;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(14,165,233,0.12); border: 1px solid rgba(14,165,233,0.3);
  color: var(--blue-pale); font-size: 0.82rem; font-weight: 500;
  padding: 0.4rem 1rem; border-radius: 50px;
  margin-bottom: 1.5rem;
}
.hero-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 800; line-height: 1.05;
  color: var(--white); margin-bottom: 1.25rem;
  letter-spacing: -0.03em;
}
.hero-subtitle {
  font-size: 1.1rem; color: var(--muted);
  max-width: 480px; margin-bottom: 2rem;
  line-height: 1.7;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 3rem; }

.hero-stats {
  display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; }
.stat-num {
  font-family: 'Syne', sans-serif;
  font-size: 1.8rem; font-weight: 800; color: var(--white); line-height: 1;
}
.stat-label { font-size: 0.78rem; color: var(--muted); margin-top: 0.2rem; }
.stat-divider { width: 1px; height: 36px; background: rgba(14,165,233,0.2); }

/* Hero Visual */
.hero-visual {
  flex: 1; display: flex; justify-content: center; align-items: center;
  position: relative; z-index: 2;
  animation: fadeUp 0.9s ease 0.2s both;
}
.ac-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 24px; padding: 2.5rem 2rem;
  backdrop-filter: blur(20px);
  box-shadow: var(--glow), var(--shadow);
  text-align: center;
  min-width: 260px;
}
.ac-unit { margin-bottom: 1.2rem; }
.ac-body {
  background: linear-gradient(135deg, #0c2040, #0a1930);
  border: 1px solid rgba(14,165,233,0.2);
  border-radius: 16px; padding: 1.5rem;
  position: relative; overflow: hidden;
}
.ac-grille { display: flex; gap: 5px; margin-bottom: 1rem; justify-content: center; }
.ac-grille span {
  display: block; height: 3px; width: 100%; max-width: 30px;
  background: linear-gradient(90deg, var(--blue-bright), var(--teal));
  border-radius: 2px; opacity: 0.7;
}
.ac-display {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1rem; padding: 0 0.5rem;
}
.ac-temp {
  font-family: 'Syne', sans-serif;
  font-size: 2.2rem; font-weight: 800; color: var(--white);
}
.ac-mode {
  font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.15em; color: var(--blue-light);
  background: rgba(14,165,233,0.15);
  padding: 0.3rem 0.6rem; border-radius: 6px;
}
.ac-vent { display: flex; flex-direction: column; gap: 4px; }
.vent-bar {
  height: 3px; background: rgba(14,165,233,0.3); border-radius: 2px;
  animation: ventMove 2s ease-in-out infinite alternate;
}
.vent-bar:nth-child(2) { animation-delay: 0.3s; }
.vent-bar:nth-child(3) { animation-delay: 0.6s; }
@keyframes ventMove {
  0% { transform: scaleX(0.6); opacity: 0.3; }
  100% { transform: scaleX(1); opacity: 0.8; }
}
.ac-airflow {
  display: flex; justify-content: center; gap: 12px;
  margin-top: 0.75rem; height: 30px; align-items: center;
}
.air-particle {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--teal);
  animation: airflow 1.8s ease-in-out infinite;
  opacity: 0;
}
.air-particle:nth-child(1) { animation-delay: 0s; }
.air-particle:nth-child(2) { animation-delay: 0.3s; }
.air-particle:nth-child(3) { animation-delay: 0.6s; }
.air-particle:nth-child(4) { animation-delay: 0.9s; }
.air-particle:nth-child(5) { animation-delay: 1.2s; }
@keyframes airflow {
  0% { opacity: 0; transform: translateY(-8px); }
  50% { opacity: 0.8; }
  100% { opacity: 0; transform: translateY(18px); }
}
.ac-card-label {
  color: var(--muted); font-size: 0.9rem; margin-top: 0.5rem;
  font-style: italic;
}

/* =============================================
   SERVICES SECTION
   ============================================= */
.services {
  padding: 7rem 0;
  background: linear-gradient(180deg, var(--blue-deep) 0%, var(--blue-dark) 100%);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}
.service-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 2rem 1.75rem;
  backdrop-filter: blur(12px);
  transition: var(--transition);
  position: relative; overflow: hidden;
  cursor: default;
}
.service-card::before {
  content: ''; position: absolute; inset: 0;
  background: var(--gradient); opacity: 0;
  transition: var(--transition);
  border-radius: var(--radius);
}
.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(14,165,233,0.4);
  box-shadow: var(--glow);
}
.service-card:hover::before { opacity: 0.04; }
.service-card.featured {
  border-color: rgba(14,165,233,0.4);
  background: linear-gradient(135deg, rgba(12,32,64,0.9), rgba(14,165,233,0.07));
  box-shadow: var(--glow);
}
.featured-badge {
  position: absolute; top: 1.2rem; right: 1.2rem;
  background: var(--gradient); color: white;
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.05em;
  padding: 0.3rem 0.7rem; border-radius: 50px;
}
.service-icon-wrap {
  width: 56px; height: 56px; border-radius: 14px;
  background: rgba(14,165,233,0.1);
  border: 1px solid rgba(14,165,233,0.2);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.25rem;
  transition: var(--transition);
}
.service-card:hover .service-icon-wrap {
  background: rgba(14,165,233,0.2);
  box-shadow: 0 0 20px rgba(14,165,233,0.3);
}
.service-icon { font-size: 1.6rem; }
.service-card h3 {
  font-family: 'Syne', sans-serif;
  font-size: 1.2rem; font-weight: 700; color: var(--white);
  margin-bottom: 0.75rem;
}
.service-card p { color: var(--muted); font-size: 0.93rem; line-height: 1.65; margin-bottom: 1.1rem; }
.service-list {
  list-style: none; margin-bottom: 1.5rem;
}
.service-list li {
  font-size: 0.87rem; color: var(--blue-pale);
  padding: 0.3rem 0;
  display: flex; align-items: center; gap: 0.5rem;
}
.service-list li::before {
  content: '✓'; color: var(--teal); font-weight: 700; font-size: 0.8rem;
}
.service-cta {
  display: inline-flex; align-items: center; gap: 0.3rem;
  color: var(--blue-light); font-weight: 600; font-size: 0.9rem;
  text-decoration: none;
  transition: var(--transition);
}
.service-cta:hover { gap: 0.6rem; color: var(--white); }

/* =============================================
   ABOUT SECTION
   ============================================= */
.about {
  padding: 7rem 0;
  background: var(--blue-dark);
  position: relative;
}
.about::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 1px; background: linear-gradient(90deg, transparent, var(--blue-bright), transparent);
}
.about-container {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 5rem; align-items: center;
}
.about-visual { position: relative; }
.about-badge-wrap {
  display: flex; justify-content: center; margin-bottom: 2rem;
}
.big-badge {
  background: var(--gradient);
  border-radius: 50%; width: 180px; height: 180px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  box-shadow: 0 0 60px rgba(14,165,233,0.4);
  animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 60px rgba(14,165,233,0.4); }
  50% { box-shadow: 0 0 90px rgba(14,165,233,0.6); }
}
.badge-num {
  font-family: 'Syne', sans-serif;
  font-size: 3rem; font-weight: 800; color: white; line-height: 1;
}
.badge-label {
  font-size: 0.85rem; font-weight: 600; color: rgba(255,255,255,0.85);
  text-align: center; line-height: 1.4;
}
.about-features {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem;
}
.mini-card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius-sm); padding: 0.9rem;
  display: flex; align-items: center; gap: 0.6rem;
  transition: var(--transition);
}
.mini-card:hover { border-color: rgba(14,165,233,0.35); background: rgba(14,165,233,0.07); }
.mini-card span { font-size: 1.3rem; }
.mini-card p { font-size: 0.82rem; color: var(--muted); font-weight: 500; }

.about-content .section-tag { margin-bottom: 0.75rem; }
.about-content .section-title { text-align: left; margin-bottom: 1.25rem; }
.about-text {
  color: var(--muted); font-size: 0.97rem; line-height: 1.75;
  margin-bottom: 1rem;
}
.about-text strong { color: var(--white); }

/* =============================================
   WHY US SECTION
   ============================================= */
.why-us {
  padding: 6rem 0;
  background: var(--blue-deep);
}
.why-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.5rem;
}
.why-card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 2rem 1.75rem;
  transition: var(--transition); position: relative;
}
.why-card:hover {
  transform: translateY(-4px);
  border-color: rgba(14,165,233,0.35);
  box-shadow: var(--glow);
}
.why-num {
  font-family: 'Syne', sans-serif;
  font-size: 2.5rem; font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem; line-height: 1;
  opacity: 0.5;
}
.why-card h4 {
  font-family: 'Syne', sans-serif;
  font-size: 1.05rem; font-weight: 700; color: var(--white);
  margin-bottom: 0.6rem;
}
.why-card p { color: var(--muted); font-size: 0.9rem; line-height: 1.65; }

/* =============================================
   CONTACT SECTION
   ============================================= */
.contact {
  padding: 7rem 0;
  background: var(--blue-dark);
  position: relative;
}
.contact::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 1px; background: linear-gradient(90deg, transparent, var(--blue-bright), transparent);
}
.contact-container {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4rem; align-items: start;
}
.contact-info .section-tag { margin-bottom: 0.75rem; }
.contact-info .section-title { text-align: left; margin-bottom: 1rem; }
.contact-info .about-text { margin-bottom: 2rem; }
.contact-cards { display: flex; flex-direction: column; gap: 0.9rem; }
.contact-detail-card {
  display: flex; align-items: center; gap: 1rem;
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: var(--radius-sm); padding: 1rem 1.25rem;
  text-decoration: none; color: inherit;
  transition: var(--transition);
}
.contact-detail-card:hover {
  border-color: rgba(14,165,233,0.35);
  transform: translateX(4px);
}
.contact-detail-card.whatsapp-card:hover { border-color: rgba(37,211,102,0.35); }
.contact-icon { font-size: 1.4rem; }
.contact-detail-card div { display: flex; flex-direction: column; gap: 0.1rem; }
.contact-detail-card strong { color: var(--white); font-size: 0.88rem; font-weight: 600; }
.contact-detail-card span { color: var(--muted); font-size: 0.85rem; }

/* Contact Form */
.contact-form-wrap {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 2.25rem;
  backdrop-filter: blur(12px);
}
.contact-form h3 {
  font-family: 'Syne', sans-serif;
  font-size: 1.3rem; font-weight: 700; color: var(--white);
  margin-bottom: 1.5rem;
}
.form-group { margin-bottom: 1.1rem; }
.form-group label {
  display: block; font-size: 0.85rem; font-weight: 500;
  color: var(--muted); margin-bottom: 0.4rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(5,13,26,0.5);
  border: 1px solid rgba(14,165,233,0.2);
  color: var(--white); font-family: 'DM Sans', sans-serif;
  font-size: 0.93rem; padding: 0.75rem 1rem;
  border-radius: var(--radius-sm); outline: none;
  transition: var(--transition);
  -webkit-appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(125,168,196,0.5); }
.form-group select { cursor: pointer; }
.form-group select option { background: var(--blue-dark); color: var(--white); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue-bright);
  box-shadow: 0 0 0 3px rgba(14,165,233,0.15);
}
.form-group textarea { resize: vertical; min-height: 90px; }
.form-success {
  display: none; margin-top: 1rem; text-align: center;
  color: #4ade80; font-size: 0.92rem; font-weight: 500;
  background: rgba(74,222,128,0.08); border: 1px solid rgba(74,222,128,0.2);
  padding: 0.75rem; border-radius: var(--radius-sm);
}
.form-success.show { display: block; }

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: #030b16;
  border-top: 1px solid var(--card-border);
  padding-top: 4rem;
}
.footer-container {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem; padding-bottom: 3rem;
}
.footer-brand p {
  color: var(--muted); font-size: 0.88rem; line-height: 1.7;
  margin: 1rem 0 1.5rem;
}
.footer-logo { margin-bottom: 0; }
.whatsapp-float-btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--green-wa); color: white;
  text-decoration: none; font-weight: 600; font-size: 0.88rem;
  padding: 0.6rem 1.2rem; border-radius: 50px;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(37,211,102,0.3);
}
.whatsapp-float-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,211,102,0.45); }
.footer-links h4, .footer-services h4, .footer-contact h4 {
  font-family: 'Syne', sans-serif;
  font-size: 0.95rem; font-weight: 700; color: var(--white);
  margin-bottom: 1.1rem;
}
.footer-links ul, .footer-services ul {
  list-style: none; display: flex; flex-direction: column; gap: 0.5rem;
}
.footer-links a, .footer-services li {
  color: var(--muted); font-size: 0.88rem; text-decoration: none;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--blue-light); }
.footer-contact p { color: var(--muted); font-size: 0.88rem; margin-bottom: 0.5rem; }
.footer-contact a { color: var(--muted); text-decoration: none; transition: var(--transition); }
.footer-contact a:hover { color: var(--blue-light); }
.footer-bottom {
  border-top: 1px solid rgba(14,165,233,0.1);
  padding: 1.25rem 1.5rem; text-align: center;
}
.footer-bottom p { color: var(--muted); font-size: 0.82rem; }

/* WhatsApp FAB */
.wa-fab {
  position: fixed; bottom: 1.75rem; right: 1.75rem; z-index: 999;
  width: 58px; height: 58px; border-radius: 50%;
  background: var(--green-wa);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.5);
  transition: var(--transition);
  text-decoration: none;
  animation: bounceIn 0.8s ease 1.5s both;
}
.wa-fab:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 8px 30px rgba(37,211,102,0.65);
}
@keyframes bounceIn {
  0% { opacity: 0; transform: scale(0.3); }
  60% { transform: scale(1.1); }
  100% { opacity: 1; transform: scale(1); }
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 900px) {
  .hero {
    flex-direction: column; text-align: center; padding-top: 6rem;
    gap: 3rem;
  }
  .hero-content { max-width: 100%; }
  .hero-subtitle { margin: 0 auto 2rem; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { width: 100%; }
  .about-container { grid-template-columns: 1fr; gap: 3rem; }
  .about-content .section-title { text-align: center; }
  .about-content .section-tag { display: block; text-align: center; }
  .contact-container { grid-template-columns: 1fr; gap: 3rem; }
  .contact-info .section-title { text-align: center; }
  .contact-info .section-tag { display: block; text-align: center; }
  .contact-info .about-text { text-align: center; }
  .footer-container { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  .nav-links { display: none; flex-direction: column; gap: 0.5rem; }
  .nav-links.open { display: flex; }
  .navbar.mobile-open {
    background: rgba(5, 13, 26, 0.98);
    backdrop-filter: blur(20px);
  }
  .navbar.mobile-open .nav-container {
    flex-wrap: wrap; padding-bottom: 1rem;
  }
  .navbar.mobile-open .nav-links {
    order: 3; width: 100%;
    padding-top: 0.5rem; border-top: 1px solid var(--card-border);
  }
  .hamburger { display: flex; }
  .nav-cta { display: none; }
  .hero-title { font-size: 2.6rem; }
  .footer-container { grid-template-columns: 1fr; }
  .about-features { grid-template-columns: 1fr 1fr; }
  .hero-actions { flex-direction: column; align-items: center; }
  .services-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
}

@media (max-width: 420px) {
  .hero-title { font-size: 2.2rem; }
  .hero-stats { flex-wrap: wrap; gap: 1rem; }
  .stat-divider { display: none; }
}