/* ============================================================
   ChatFlow Business Website — Main CSS
   Enterprise-grade marketing site styles
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700;800;900&family=Fira+Code:wght@400;500&display=swap');

/* ============================================================
   CSS VARIABLES & DESIGN TOKENS
   ============================================================ */
:root {
  --green-50:  #f0fdf4;
  --green-100: #dcfce7;
  --green-200: #bbf7d0;
  --green-400: #4ade80;
  --green-500: #22c55e;
  --green-600: #25D366;
  --green-700: #128C7E;
  --green-800: #075E54;
  --green-900: #064e3b;

  --navy-900: #0a1628;
  --navy-800: #0d1f3c;
  --navy-700: #162952;
  --navy-600: #1e3a6e;

  --gray-50:  #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  --white: #ffffff;
  --black: #000000;

  --gradient-brand:    linear-gradient(135deg, #25D366 0%, #128C7E 100%);
  --gradient-hero:     linear-gradient(135deg, #0a1628 0%, #064e3b 50%, #075E54 100%);
  --gradient-cta:      linear-gradient(135deg, #075E54 0%, #128C7E 50%, #25D366 100%);
  --gradient-card:     linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
  --gradient-glass:    linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);

  --shadow-xs:  0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:  0 8px 24px rgba(0,0,0,0.08);
  --shadow-lg:  0 16px 48px rgba(0,0,0,0.12);
  --shadow-xl:  0 24px 64px rgba(0,0,0,0.16);
  --shadow-brand: 0 8px 32px rgba(37,211,102,0.3);
  --shadow-navy: 0 16px 48px rgba(10,22,40,0.4);

  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-2xl:  32px;
  --radius-full: 9999px;

  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-mono:    'Fira Code', monospace;

  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  --nav-height: 72px;
  --section-padding: 96px 0;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: var(--green-700); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--green-600); }

h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
  letter-spacing: -0.02em;
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

/* ============================================================
   KEYFRAMES
   ============================================================ */
@keyframes fadeUp   { from { opacity:0; transform:translateY(24px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeIn   { from { opacity:0; } to { opacity:1; } }
@keyframes float    { 0%,100% { transform:translateY(0); } 50% { transform:translateY(-12px); } }
@keyframes pulse-ring { 0% { box-shadow:0 0 0 0 rgba(37,211,102,0.4); } 70% { box-shadow:0 0 0 20px rgba(37,211,102,0); } 100% { box-shadow:0 0 0 0 rgba(37,211,102,0); } }
@keyframes spin     { to { transform:rotate(360deg); } }
@keyframes shimmer  { 0% { background-position:-200% 0; } 100% { background-position:200% 0; } }
@keyframes count-up { from { opacity:0; transform:scale(0.8); } to { opacity:1; transform:scale(1); } }

.animate-float { animation: float 4s ease-in-out infinite; }
.animate-fade-up { animation: fadeUp 0.6s ease both; }
.d1 { animation-delay: 0.1s; }
.d2 { animation-delay: 0.2s; }
.d3 { animation-delay: 0.3s; }
.d4 { animation-delay: 0.4s; }
.d5 { animation-delay: 0.5s; }
.d6 { animation-delay: 0.6s; }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar-cf {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: var(--transition);
}

.navbar-cf.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226,232,240,0.8);
  box-shadow: var(--shadow-sm);
}

.navbar-cf.dark {
  background: transparent;
}

.navbar-cf.dark.scrolled {
  background: rgba(10,22,40,0.95);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-brand);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-brand);
}

.nav-logo-name {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--gray-900);
  line-height: 1.1;
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: white;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.navbar-cf.dark .nav-logo-name { color: white; }
.navbar-cf.dark.scrolled .nav-logo-name { color: white; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  flex: 1;
  justify-content: center;
}

.nav-link-item a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-700);
  transition: var(--transition);
  position: relative;
}

.nav-link-item a:hover { background: var(--green-50); color: var(--green-700); }
.nav-link-item a.active { color: var(--green-700); font-weight: 600; }

.navbar-cf.dark .nav-link-item a { color: rgba(255,255,255,0.8); }
.navbar-cf.dark .nav-link-item a:hover { background: rgba(255,255,255,0.08); color: white; }
.navbar-cf.dark.scrolled .nav-link-item a { color: rgba(255,255,255,0.8); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 220px;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 100;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--gray-700);
  font-size: 0.875rem;
  transition: var(--transition);
  cursor: pointer;
}

.nav-dropdown-item:hover { background: var(--green-50); color: var(--green-700); }

.nav-dropdown-icon {
  width: 32px;
  height: 32px;
  background: var(--green-50);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green-700);
  font-size: 0.875rem;
  flex-shrink: 0;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-700);
  border-radius: 99px;
  transition: var(--transition);
}

.navbar-cf.dark .hamburger span { background: white; }

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: white;
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow-lg);
  z-index: 999;
  padding: 16px 24px 24px;
}

.mobile-nav.open { display: block; }

.mobile-nav-links { list-style: none; margin-bottom: 16px; }
.mobile-nav-links li a {
  display: block;
  padding: 10px 12px;
  color: var(--gray-700);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.mobile-nav-links li a:hover { background: var(--green-50); color: var(--green-700); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--gradient-brand);
  color: white;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
  box-shadow: var(--shadow-brand);
}

.btn-brand:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(37,211,102,0.4);
  color: white;
}

.btn-brand:active { transform: translateY(0); }

.btn-brand-lg {
  padding: 16px 36px;
  font-size: 1.0625rem;
  border-radius: var(--radius-lg);
}

.btn-brand-xl {
  padding: 20px 48px;
  font-size: 1.125rem;
  border-radius: var(--radius-lg);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  background: transparent;
  color: var(--gray-700);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-outline:hover {
  border-color: var(--green-600);
  color: var(--green-700);
  background: var(--green-50);
}

.btn-outline-white {
  border-color: rgba(255,255,255,0.4);
  color: white;
  background: rgba(255,255,255,0.08);
}

.btn-outline-white:hover {
  background: rgba(255,255,255,0.15);
  border-color: white;
  color: white;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: transparent;
  color: var(--gray-600);
  font-weight: 500;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-ghost:hover { color: var(--green-700); }

/* ============================================================
   CONTAINER / LAYOUT
   ============================================================ */
.container-cf {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding);
}

.section-sm { padding: 64px 0; }
.section-lg { padding: 120px 0; }

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--green-50);
  color: var(--green-700);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 20px;
  border: 1px solid var(--green-200);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 20px;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.section-title .highlight {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ============================================================
   CARDS
   ============================================================ */
.card-cf {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 32px;
  transition: var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.card-cf:hover {
  border-color: var(--green-400);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-cf::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
  opacity: 0;
  transition: var(--transition);
}

.card-cf:hover::before { opacity: 1; }

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
  flex-shrink: 0;
}

.card-icon-green  { background: linear-gradient(135deg, #25D366, #128C7E); color: white; }
.card-icon-blue   { background: linear-gradient(135deg, #3b82f6, #1d4ed8); color: white; }
.card-icon-purple { background: linear-gradient(135deg, #8b5cf6, #6d28d9); color: white; }
.card-icon-orange { background: linear-gradient(135deg, #f59e0b, #d97706); color: white; }
.card-icon-red    { background: linear-gradient(135deg, #ef4444, #dc2626); color: white; }
.card-icon-teal   { background: linear-gradient(135deg, #14b8a6, #0d9488); color: white; }
.card-icon-navy   { background: linear-gradient(135deg, #1e3a6e, #0a1628); color: white; }
.card-icon-pink   { background: linear-gradient(135deg, #ec4899, #be185d); color: white; }

.card-title-cf {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
}

.card-desc-cf {
  font-size: 0.9375rem;
  color: var(--gray-500);
  line-height: 1.65;
}

/* Glass card */
.card-glass {
  background: var(--gradient-glass);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-xl);
  padding: 28px;
  backdrop-filter: blur(16px);
}

/* ============================================================
   STATS
   ============================================================ */
.stat-item {
  text-align: center;
  padding: 24px;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 900;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.9375rem;
  color: var(--gray-500);
  font-weight: 500;
}

.stat-sublabel {
  font-size: 0.8125rem;
  color: var(--gray-400);
  margin-top: 2px;
}

/* ============================================================
   BADGES
   ============================================================ */
.badge-cf {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
}

.badge-green  { background: var(--green-100); color: var(--green-800); }
.badge-blue   { background: #dbeafe; color: #1e40af; }
.badge-purple { background: #ede9fe; color: #5b21b6; }
.badge-orange { background: #fef3c7; color: #92400e; }

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonial-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 32px;
  position: relative;
  transition: var(--transition-slow);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--green-400);
}

.testimonial-quote {
  font-size: 3rem;
  line-height: 1;
  color: var(--green-600);
  font-family: Georgia, serif;
  margin-bottom: 12px;
}

.testimonial-text {
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1rem;
  color: white;
  flex-shrink: 0;
}

.testimonial-name {
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--gray-900);
}

.testimonial-role {
  font-size: 0.8125rem;
  color: var(--gray-500);
}

.star-rating {
  color: #f59e0b;
  font-size: 0.875rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

/* ============================================================
   PRICING
   ============================================================ */
.pricing-card {
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 36px;
  position: relative;
  transition: var(--transition-slow);
  display: flex;
  flex-direction: column;
}

.pricing-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px);
}

.pricing-card.popular {
  border-color: var(--green-600);
  box-shadow: var(--shadow-brand);
  transform: translateY(-8px) scale(1.02);
}

.pricing-card.popular:hover {
  transform: translateY(-12px) scale(1.02);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-brand);
  color: white;
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 4px 20px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing-plan-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.pricing-price {
  display: flex;
  align-items: flex-start;
  gap: 4px;
  margin: 20px 0;
}

.pricing-currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-700);
  margin-top: 8px;
}

.pricing-amount {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--gray-900);
  line-height: 1;
  letter-spacing: -0.04em;
}

.pricing-period {
  font-size: 0.9rem;
  color: var(--gray-500);
  align-self: flex-end;
  margin-bottom: 8px;
}

.pricing-desc {
  font-size: 0.9375rem;
  color: var(--gray-500);
  margin-bottom: 24px;
  line-height: 1.6;
}

.pricing-divider {
  height: 1px;
  background: var(--gray-200);
  margin: 24px 0;
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  margin-bottom: 28px;
}

.pricing-feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--gray-700);
}

.pricing-feature i {
  color: var(--green-600);
  font-size: 0.875rem;
  margin-top: 3px;
  flex-shrink: 0;
}

.pricing-feature.no i { color: var(--gray-300); }
.pricing-feature.no span { color: var(--gray-400); }

/* ============================================================
   COMPARISON TABLE
   ============================================================ */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.compare-table thead th {
  padding: 20px 24px;
  background: var(--gray-900);
  color: white;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9375rem;
  text-align: center;
  border: none;
}

.compare-table thead th:first-child { text-align: left; }

.compare-table thead th.popular-col {
  background: var(--gradient-brand);
}

.compare-table tbody tr { border-bottom: 1px solid var(--gray-100); }
.compare-table tbody tr:last-child { border-bottom: none; }
.compare-table tbody tr:hover { background: var(--green-50); }

.compare-table tbody tr.section-row td {
  background: var(--gray-50);
  font-weight: 700;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-500);
  padding: 12px 24px;
}

.compare-table tbody td {
  padding: 16px 24px;
  font-size: 0.9375rem;
  color: var(--gray-700);
  text-align: center;
  vertical-align: middle;
}

.compare-table tbody td:first-child { text-align: left; font-weight: 500; }

.check-icon { color: var(--green-600); font-size: 1rem; }
.cross-icon { color: var(--gray-300); font-size: 1rem; }

/* ============================================================
   ACCORDION / FAQ
   ============================================================ */
.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover { border-color: var(--green-400); }
.faq-item.open  { border-color: var(--green-600); box-shadow: var(--shadow-sm); }

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 24px;
  cursor: pointer;
  background: white;
  gap: 16px;
  user-select: none;
}

.faq-question-text {
  font-weight: 600;
  font-size: 1rem;
  color: var(--gray-900);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--green-50);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green-700);
  font-size: 0.875rem;
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-item.open .faq-icon { background: var(--green-600); color: white; transform: rotate(45deg); }

.faq-answer {
  display: none;
  padding: 0 24px 22px;
  font-size: 0.9375rem;
  color: var(--gray-600);
  line-height: 1.7;
  background: white;
}

.faq-item.open .faq-answer { display: block; }

/* ============================================================
   FORM ELEMENTS
   ============================================================ */
.form-cf {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-label-cf {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--gray-700);
  margin-bottom: 6px;
}

.form-input-cf {
  width: 100%;
  height: 50px;
  padding: 0 16px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--gray-900);
  background: white;
  outline: none;
  transition: var(--transition);
}

.form-input-cf:focus {
  border-color: var(--green-600);
  box-shadow: 0 0 0 4px rgba(37,211,102,0.12);
}

.form-input-cf::placeholder { color: var(--gray-400); }

textarea.form-input-cf {
  height: auto;
  padding: 14px 16px;
  min-height: 130px;
  resize: vertical;
}

select.form-input-cf {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer-cf {
  background: var(--navy-900);
  color: rgba(255,255,255,0.7);
  padding: 72px 0 0;
}

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

.footer-brand-name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: white;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.footer-brand-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.55);
  margin-bottom: 24px;
  max-width: 280px;
}

.footer-socials {
  display: flex;
  gap: 10px;
}

.footer-social {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: var(--transition);
  text-decoration: none;
}

.footer-social:hover { background: var(--gradient-brand); color: white; }

.footer-col-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9375rem;
  color: white;
  margin-bottom: 18px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.55);
  transition: var(--transition);
}

.footer-links a:hover { color: var(--green-400); padding-left: 4px; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-bottom-text { font-size: 0.875rem; color: rgba(255,255,255,0.4); }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { font-size: 0.875rem; color: rgba(255,255,255,0.4); }
.footer-bottom-links a:hover { color: var(--green-400); }

/* ============================================================
   MISC UTILITIES
   ============================================================ */
.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--green-50);
  color: var(--green-800);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  border: 1px solid var(--green-200);
}

.divider-cf {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gray-200), transparent);
  margin: 0;
}

/* WhatsApp floating button */
.wa-float {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 60px;
  height: 60px;
  background: var(--gradient-brand);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.75rem;
  text-decoration: none;
  box-shadow: 0 8px 32px rgba(37,211,102,0.5);
  z-index: 900;
  transition: var(--transition);
  animation: pulse-ring 2s infinite;
}

.wa-float:hover { transform: scale(1.1); color: white; }

/* Brand color chip */
.color-chip {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  margin-right: 4px;
  vertical-align: middle;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 768px) {
  :root { --section-padding: 64px 0; }
  .nav-links, .nav-actions { display: none; }
  .hamburger { display: flex; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section-title { font-size: 1.875rem; }
  .pricing-card.popular { transform: none; }
}

@media (max-width: 576px) {
  :root { --section-padding: 48px 0; }
  .container-cf { padding: 0 16px; }
  .btn-brand-xl { padding: 16px 32px; font-size: 1rem; }
}

/* ── CTA BANNER ── */
.cta-banner {
  background: var(--navy-900);
  border-radius: var(--radius-2xl);
  padding: 72px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(37,211,102,.15) 0%, transparent 70%);
}
.cta-banner::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(18,140,126,.1) 0%, transparent 70%);
}
.cta-banner > * {
  position: relative;
  z-index: 1;
}
@media(max-width:576px) {
  .cta-banner { padding: 48px 24px; }
}