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

:root {
  --color-bg: #080c18;
  --color-bg-2: #0d1225;
  --color-surface: rgba(255,255,255,0.04);
  --color-surface-hover: rgba(255,255,255,0.08);
  --color-border: rgba(255,255,255,0.08);
  --color-border-hover: rgba(255,255,255,0.2);
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-primary: #7c3aed;
  --color-primary-light: #a855f7;
  --color-accent: #3b82f6;
  --color-accent-light: #60a5fa;
  --color-whatsapp: #25d366;
  --color-whatsapp-dark: #1da851;
  --color-success: #10b981;
  --color-error: #f87171;
  --grad-primary: linear-gradient(135deg, #7c3aed 0%, #3b82f6 100%);
  --grad-glow: linear-gradient(135deg, rgba(124,58,237,0.3) 0%, rgba(59,130,246,0.3) 100%);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.4), 0 1px 0 rgba(255,255,255,0.05);
  --shadow-glow: 0 0 40px rgba(124,58,237,0.2);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --font-main: 'Plus Jakarta Sans', 'Inter', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* ============================
   BACKGROUND PARTICLES
   ============================ */
.bg-particles {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  opacity: 0;
  animation: floatParticle linear infinite;
  pointer-events: none;
}

@keyframes floatParticle {
  0% { opacity: 0; transform: translateY(100vh) scale(0); }
  10% { opacity: 1; }
  90% { opacity: 0.5; }
  100% { opacity: 0; transform: translateY(-10vh) scale(1.5); }
}

/* ============================
   NAVBAR
   ============================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 24px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(8, 12, 24, 0.8);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(8, 12, 24, 0.95);
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.2rem;
  text-decoration: none;
  color: var(--color-text);
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 50px;
  transition: var(--transition);
}

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

.nav-cta {
  background: var(--grad-primary);
  color: white !important;
  padding: 8px 20px;
  border-radius: 50px;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(124,58,237,0.3);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(124,58,237,0.5);
  background: var(--color-surface) !important;
  background: var(--grad-primary) !important;
}

.menu-toggle {
  display: none;
}

/* ============================
   BUTTONS
   ============================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 50px;
  font-family: var(--font-main);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 0; height: 0;
  background: rgba(255,255,255,0.15);
  border-radius: 50%;
  transform: translate(-50%,-50%);
  transition: width 0.5s, height 0.5s, opacity 0.5s;
  opacity: 0;
  pointer-events: none;
}

.btn:active::before {
  width: 300px; height: 300px; opacity: 1;
}

.btn-primary {
  background: var(--grad-primary);
  color: white;
  box-shadow: 0 4px 20px rgba(124,58,237,0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 35px rgba(124,58,237,0.55);
}

.btn-ghost {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
}

.btn-whatsapp {
  background: var(--color-whatsapp);
  color: white;
  box-shadow: 0 4px 20px rgba(37,211,102,0.35);
}

.btn-whatsapp:hover {
  background: var(--color-whatsapp-dark);
  transform: translateY(-3px);
  box-shadow: 0 10px 35px rgba(37,211,102,0.55);
}

.btn-full { width: 100%; justify-content: center; border-radius: var(--radius-sm); }

/* ============================
   HERO
   ============================ */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 40px 80px;
}

.hero-content { flex: 1; max-width: 580px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(37,211,102,0.1);
  border: 1px solid rgba(37,211,102,0.3);
  color: var(--color-whatsapp);
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 28px;
  animation: fadeInDown 0.8s ease both;
}

.badge-dot {
  width: 8px; height: 8px;
  background: var(--color-whatsapp);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}

.hero-title {
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -2px;
  margin-bottom: 24px;
  animation: fadeInDown 0.8s 0.1s ease both;
}

.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 36px;
  line-height: 1.8;
  animation: fadeInDown 0.8s 0.2s ease both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
  animation: fadeInDown 0.8s 0.3s ease both;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  animation: fadeInDown 0.8s 0.4s ease both;
}

.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-num {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 0.8rem; color: var(--color-text-muted); font-weight: 500; }
.stat-divider { width: 1px; height: 40px; background: var(--color-border); }

/* Hero Illustration */
.hero-illustration {
  flex: 0 0 420px;
  position: relative;
  height: 420px;
  animation: fadeIn 1.2s 0.5s ease both;
  pointer-events: none;
}

.center-orb {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 160px; height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orb-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(124,58,237,0.3);
  animation: expandRing 3s ease-in-out infinite;
}

.ring-1 { width: 160px; height: 160px; animation-delay: 0s; }
.ring-2 { width: 220px; height: 220px; animation-delay: 1s; }
.ring-3 { width: 290px; height: 290px; animation-delay: 2s; }

@keyframes expandRing {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 0.2; transform: scale(1.05); }
}

.orb-core {
  width: 100px; height: 100px;
  background: var(--grad-glow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(124,58,237,0.4);
  box-shadow: var(--shadow-glow);
  backdrop-filter: blur(20px);
}

.floating-card {
  position: absolute;
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-card);
  white-space: nowrap;
}

.card-icon { font-size: 1.4rem; }

.card-1 { top: 10%; right: 0; animation: float1 4s ease-in-out infinite; }
.card-2 { bottom: 20%; left: -20px; animation: float2 4.5s ease-in-out infinite; }
.card-3 { top: 50%; right: -10px; animation: float3 3.8s ease-in-out infinite; }

@keyframes float1 { 0%, 100% { transform: translateY(0) rotate(-2deg); } 50% { transform: translateY(-14px) rotate(2deg); } }
@keyframes float2 { 0%, 100% { transform: translateY(0) rotate(1deg); } 50% { transform: translateY(-10px) rotate(-1deg); } }
@keyframes float3 { 0%, 100% { transform: translateY(0) rotate(2deg); } 50% { transform: translateY(-16px) rotate(-2deg); } }

/* ============================
   SECTION BASICS
   ============================ */
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

/* ============================
   CONTACT OPTIONS
   ============================ */
.contact-options {
  position: relative;
  z-index: 1;
  padding: 80px 0;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-2) 100%);
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.option-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  text-decoration: none;
  color: var(--color-text);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.option-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad-primary);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}

.option-card:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-8px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

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

.option-icon-wrap {
  width: 64px; height: 64px;
  background: color-mix(in srgb, var(--clr), transparent 85%);
  border: 1px solid color-mix(in srgb, var(--clr), transparent 60%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr);
  margin-bottom: 8px;
  transition: var(--transition);
}

.option-card:hover .option-icon-wrap {
  background: color-mix(in srgb, var(--clr), transparent 70%);
  transform: scale(1.08);
}

.option-card h3 { font-size: 1.2rem; font-weight: 700; }
.option-card p { color: var(--color-text-muted); font-size: 0.9rem; line-height: 1.7; }

.option-cta {
  margin-top: auto;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary-light);
}

/* ============================
   CONTACT FORM SECTION
   ============================ */
.form-section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
  background: var(--color-bg-2);
}

.form-layout {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 80px;
  align-items: start;
}

.form-info { padding-top: 16px; }

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(124,58,237,0.12);
  border: 1px solid rgba(124,58,237,0.3);
  color: var(--color-primary-light);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.form-info h2 {
  font-size: clamp(2rem, 3.5vw, 2.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 18px;
}

.form-info > p {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 36px;
}

.info-list { display: flex; flex-direction: column; gap: 20px; }

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.info-item:hover { border-color: var(--color-border-hover); background: var(--color-surface-hover); }

.info-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  width: 44px; height: 44px;
  background: rgba(124,58,237,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.info-item div { display: flex; flex-direction: column; gap: 3px; }
.info-item strong { font-weight: 600; font-size: 0.95rem; }
.info-item span { color: var(--color-text-muted); font-size: 0.88rem; }

/* Form Card */
.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 44px 40px;
  box-shadow: var(--shadow-card);
  position: sticky;
  top: 90px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
  position: relative;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.3px;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.04);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  color: var(--color-text);
  font-family: var(--font-main);
  font-size: 0.95rem;
  width: 100%;
  transition: var(--transition);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  pointer-events: auto !important;
  -webkit-user-select: text !important;
  user-select: text !important;
}

.form-group select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

.form-group select option { background: #1a1f35; color: var(--color-text); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  background: rgba(124,58,237,0.05);
  box-shadow: 0 0 0 3px rgba(124,58,237,0.12);
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
  border-color: var(--color-error);
  background: rgba(248,113,113,0.05);
}

.form-group textarea { resize: vertical; min-height: 120px; }

.field-error {
  font-size: 0.8rem;
  color: var(--color-error);
  min-height: 16px;
  display: block;
}

.char-count {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-align: right;
  display: block;
  margin-top: -6px;
}

/* ── Platform Choice Cards ── */
.platform-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 4px;
}

.platform-card {
  cursor: pointer;
  display: block;
}

.platform-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.platform-card-inner {
  background: rgba(255,255,255,0.03);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.platform-card-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-primary);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.platform-card:hover .platform-card-inner {
  border-color: rgba(124,58,237,0.5);
  background: rgba(124,58,237,0.06);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(124,58,237,0.18);
}

.platform-card input:checked + .platform-card-inner {
  border-color: var(--color-primary);
  background: rgba(124,58,237,0.1);
  box-shadow: 0 0 0 3px rgba(124,58,237,0.18), 0 8px 24px rgba(124,58,237,0.2);
}

.platform-icon {
  color: var(--color-primary-light);
  margin-bottom: 4px;
  transition: var(--transition);
}

.platform-card input:checked + .platform-card-inner .platform-icon {
  color: var(--color-accent-light);
}

.platform-card-inner strong {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-text);
}

.platform-card-inner span {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.platform-check {
  position: absolute;
  top: 12px; right: 12px;
  width: 22px; height: 22px;
  background: var(--grad-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0);
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.platform-card input:checked + .platform-card-inner .platform-check {
  opacity: 1;
  transform: scale(1);
}

/* Form WhatsApp note */
.form-wa-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 14px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  padding: 12px 14px;
  background: rgba(37,211,102,0.06);
  border: 1px solid rgba(37,211,102,0.15);
  border-radius: var(--radius-sm);
}

.form-wa-note svg { flex-shrink: 0; margin-top: 2px; color: var(--color-whatsapp); }

/* Spinner */
@keyframes spin { to { transform: rotate(360deg); } }
.spin { animation: spin 0.8s linear infinite; }

/* Form Success */
.form-success {
  text-align: center;
  padding: 40px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.success-icon { animation: bounceIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both; }

@keyframes bounceIn {
  0% { transform: scale(0); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.form-success h3 { font-size: 1.6rem; font-weight: 800; }
.form-success p { color: var(--color-text-muted); }

/* ============================
   STUDENT MARKETING PLAN
   ============================ */
.student-marketing-section {
  background: rgba(124, 58, 237, 0.03);
  border: 1px dashed rgba(124, 58, 237, 0.3);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
  animation: slideDown 0.3s ease both;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.student-marketing-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.student-badge {
  font-size: 0.7rem;
  font-weight: 700;
  color: #a855f7;
  background: rgba(168, 85, 247, 0.12);
  padding: 4px 10px;
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.student-marketing-header h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
}

.student-marketing-desc {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  line-height: 1.5;
}

.social-platforms-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 8px;
}

.social-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.02);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 500;
  transition: var(--transition);
  user-select: none;
  position: relative;
}

.social-checkbox input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.checkbox-custom {
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--color-border);
  border-radius: 4px;
  display: inline-block;
  position: relative;
  transition: var(--transition);
  background: rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
}

.social-checkbox:hover {
  background: rgba(124, 58, 237, 0.05);
  border-color: rgba(124, 58, 237, 0.4);
}

.social-checkbox input:checked + .checkbox-custom {
  background: var(--grad-primary);
  border-color: var(--color-primary);
}

.social-checkbox input:checked + .checkbox-custom::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 9px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.social-checkbox input:checked ~ span:last-child {
  color: var(--color-text);
  font-weight: 600;
}

.marketing-calc-card {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.calc-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.calc-row.total {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--color-text);
}

.calc-divider {
  height: 1px;
  background: var(--color-border);
  margin: 4px 0;
}

/* ============================
   WHATSAPP SECTION
   ============================ */
.whatsapp-section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
  background: var(--color-bg);
}

.wa-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 60px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
  align-items: center;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.wa-card::before {
  content: '';
  position: absolute;
  top: -50%; left: -20%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(37,211,102,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.wa-icon-big {
  width: 80px; height: 80px;
  background: rgba(37,211,102,0.1);
  border: 1px solid rgba(37,211,102,0.25);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.wa-text h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.wa-text p { color: var(--color-text-muted); font-size: 1rem; line-height: 1.8; margin-bottom: 28px; }

.wa-number-display {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background: rgba(37,211,102,0.08);
  border: 1px solid rgba(37,211,102,0.2);
  border-radius: 50px;
  padding: 10px 20px;
  margin-bottom: 28px;
}

.wa-number {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-whatsapp);
  letter-spacing: 0.5px;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--color-text-muted);
  padding: 5px 12px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-main);
}

.copy-btn:hover { background: rgba(255,255,255,0.14); color: var(--color-text); }
.copy-btn.copied { background: rgba(16,185,129,0.2); border-color: rgba(16,185,129,0.4); color: var(--color-success); }

/* Phone mockup */
.wa-right { display: flex; justify-content: center; }

.phone-frame {
  width: 240px;
  background: #1a1a2e;
  border-radius: 36px;
  padding: 12px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.08);
}

.phone-screen {
  background: #0d1f1a;
  border-radius: 26px;
  overflow: hidden;
  height: 320px;
  display: flex;
  flex-direction: column;
}

.wa-chat-header {
  background: #075e54;
  padding: 16px 16px 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.wa-avatar {
  width: 36px; height: 36px;
  background: var(--color-whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  color: white;
}

.wa-chat-info { display: flex; flex-direction: column; }
.wa-chat-info strong { font-size: 0.88rem; color: white; }
.wa-chat-info span { font-size: 0.72rem; color: rgba(255,255,255,0.75); }

.wa-messages {
  flex: 1;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow: hidden;
  background: #0b1f16;
}

.wa-msg {
  max-width: 85%;
  padding: 8px 12px;
  border-radius: 12px;
  position: relative;
}

.wa-msg p { font-size: 0.78rem; line-height: 1.5; }
.wa-time { font-size: 0.65rem; color: rgba(255,255,255,0.4); float: right; margin-left: 8px; margin-top: 2px; }

.wa-msg.incoming {
  background: #1f2d27;
  color: #e2e8f0;
  align-self: flex-start;
  border-bottom-left-radius: 3px;
}

.wa-msg.outgoing {
  background: #005c4b;
  color: #e2e8f0;
  align-self: flex-end;
  border-bottom-right-radius: 3px;
}

.wa-msg.typing { padding: 12px; }
.typing-dots { display: flex; gap: 4px; align-items: center; }
.typing-dots span {
  width: 6px; height: 6px;
  background: rgba(255,255,255,0.5);
  border-radius: 50%;
  animation: typingDot 1.4s ease-in-out infinite;
}
.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingDot {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-6px); opacity: 1; }
}

/* ============================
   FAQ SECTION
   ============================ */
.faq-section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
  background: var(--color-bg-2);
}

.faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 780px; margin: 0 auto; }

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.open { border-color: var(--color-border-hover); }

.faq-question {
  width: 100%;
  background: none;
  border: none;
  color: var(--color-text);
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}

.faq-question:hover { background: var(--color-surface-hover); }

.faq-chevron { transition: transform 0.3s ease; flex-shrink: 0; }
.faq-item.open .faq-chevron { transform: rotate(180deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 200px;
  padding: 0 24px 22px;
}

.faq-answer p { color: var(--color-text-muted); font-size: 0.95rem; line-height: 1.8; }

/* ============================
   FOOTER
   ============================ */
.footer {
  position: relative;
  z-index: 1;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 40px 0;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
}

.footer-text { color: var(--color-text-muted); font-size: 0.88rem; }

.footer-social { display: flex; gap: 12px; }

.social-link {
  width: 40px; height: 40px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: var(--transition);
}

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

/* ============================
   FLOATING WHATSAPP FAB
   ============================ */
.fab-whatsapp {
  position: fixed;
  bottom: 100px;
  right: 28px;
  z-index: 900;
  background: var(--color-whatsapp);
  color: white;
  border-radius: 50px;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.85rem;
  box-shadow: 0 8px 30px rgba(37,211,102,0.45);
  transition: var(--transition);
  overflow: hidden;
  max-width: 56px;
}

.fab-whatsapp:hover {
  max-width: 220px;
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(37,211,102,0.6);
}

.fab-label {
  white-space: nowrap;
  overflow: hidden;
  opacity: 0;
  transition: opacity 0.2s ease 0.05s;
}

.fab-whatsapp:hover .fab-label { opacity: 1; }

/* ============================
   CHAT WIDGET
   ============================ */
.chat-widget {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 950;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
  pointer-events: none;
}

.chat-toggle {
  width: 60px; height: 60px;
  background: var(--grad-primary);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 30px rgba(124,58,237,0.5);
  transition: var(--transition);
  position: relative;
  flex-shrink: 0;
  pointer-events: auto;
}

.chat-toggle:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 15px 40px rgba(124,58,237,0.7);
}

.chat-badge {
  position: absolute;
  top: -4px; right: -4px;
  width: 22px; height: 22px;
  background: #ef4444;
  color: white;
  border-radius: 50%;
  font-size: 0.72rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-bg);
  animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

/* Chat Window */
.chat-window {
  width: 380px;
  background: var(--color-bg-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 60px rgba(0,0,0,0.6), 0 1px 0 rgba(255,255,255,0.05);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform-origin: bottom right;
  transform: scale(0) translateY(20px);
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
  max-height: 560px;
}

.chat-window.open {
  transform: scale(1) translateY(0);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.chat-header {
  background: var(--grad-primary);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chat-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-avatar {
  width: 42px; height: 42px;
  background: rgba(255,255,255,0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(255,255,255,0.4);
  position: relative;
}

.avatar-online {
  position: absolute;
  bottom: 1px; right: 1px;
  width: 10px; height: 10px;
  background: var(--color-whatsapp);
  border-radius: 50%;
  border: 2px solid var(--color-bg-2);
}

.chat-header-info > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.chat-header-info strong { font-weight: 700; font-size: 0.95rem; color: white; }

.online-status { font-size: 0.78rem; color: rgba(255,255,255,0.8); }

.chat-header-actions { display: flex; align-items: center; gap: 8px; }

.chat-wa-btn, .chat-close-btn {
  width: 32px; height: 32px;
  background: rgba(255,255,255,0.15);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: var(--transition);
}

.chat-wa-btn:hover, .chat-close-btn:hover { background: rgba(255,255,255,0.25); }

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 280px;
  max-height: 340px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }

.chat-date-divider {
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  background: rgba(255,255,255,0.05);
  padding: 4px 12px;
  border-radius: 20px;
  align-self: center;
}

.chat-msg {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  animation: slideMsg 0.3s ease both;
}

@keyframes slideMsg {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.chat-msg.user { flex-direction: row-reverse; }

.msg-avatar {
  width: 30px; height: 30px;
  background: var(--grad-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 800;
  color: white;
  flex-shrink: 0;
}

.msg-bubble {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  border-bottom-left-radius: 4px;
  padding: 10px 14px;
  max-width: 82%;
}

.chat-msg.user .msg-bubble {
  background: rgba(124,58,237,0.25);
  border-color: rgba(124,58,237,0.3);
  border-radius: 16px;
  border-bottom-right-radius: 4px;
}

.msg-bubble p { font-size: 0.88rem; line-height: 1.55; }
.msg-time { display: block; font-size: 0.72rem; color: var(--color-text-muted); margin-top: 4px; }

/* Quick Replies */
.chat-quick-replies {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 4px 0 4px 40px;
  animation: slideMsg 0.3s 0.3s ease both;
}

.quick-reply {
  background: rgba(124,58,237,0.12);
  border: 1px solid rgba(124,58,237,0.3);
  color: var(--color-primary-light);
  padding: 7px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-main);
  transition: var(--transition);
  white-space: nowrap;
}

.quick-reply:hover {
  background: rgba(124,58,237,0.25);
  border-color: var(--color-primary-light);
}

/* Chat Composer */
.chat-composer {
  padding: 12px 16px;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 10px;
  align-items: center;
  background: rgba(0,0,0,0.2);
}

#chatInput {
  flex: 1;
  background: rgba(255,255,255,0.06);
  border: 1.5px solid var(--color-border);
  border-radius: 50px;
  padding: 10px 18px;
  color: var(--color-text);
  font-family: var(--font-main);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition);
}

#chatInput:focus {
  border-color: var(--color-primary);
  background: rgba(124,58,237,0.06);
}

#chatInput::placeholder { color: rgba(148,163,184,0.6); }

.send-chat-btn {
  width: 42px; height: 42px;
  background: var(--grad-primary);
  border: none;
  border-radius: 50%;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}

.send-chat-btn:hover { transform: scale(1.1); box-shadow: 0 4px 20px rgba(124,58,237,0.4); }

.chat-footer-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 0.72rem;
  color: var(--color-text-muted);
  border-top: 1px solid rgba(255,255,255,0.04);
}

/* ============================
   ANIMATIONS
   ============================ */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 1024px) {
  .bg-particles { display: none !important; }
  .hero { flex-direction: column; text-align: center; min-height: auto; padding-top: 120px; gap: 40px; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-illustration { width: 100%; height: 320px; }
  .form-layout { grid-template-columns: 1fr; gap: 40px; }
  .form-card { position: static; }
  .options-grid { grid-template-columns: 1fr; }
  .wa-card { grid-template-columns: 1fr; padding: 40px; }
  .wa-right { display: none; }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
    padding: 0;
  }
  .menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    transition: var(--transition);
    border-radius: 2px;
  }
  .menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .nav-links {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(8, 12, 24, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 30px 24px;
    gap: 16px;
    transform: translateY(-150%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease, visibility 0.4s ease;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  
  .nav-link {
    width: 100%;
    text-align: center;
    padding: 12px;
  }
  
  .nav-cta {
    width: 100%;
    justify-content: center;
  }
  
  .hero { padding: 100px 24px 60px; }
  .section-inner { padding: 0 24px; }
  .form-row { grid-template-columns: 1fr; }
  .form-card { padding: 28px 22px; border-radius: var(--radius-lg); }
  .form-group input,
  .form-group select,
  .form-group textarea {
    font-size: 16px !important;
  }
  .hero-title { font-size: 2.6rem; }
  .chat-window { width: 340px; }
  .fab-whatsapp { bottom: 104px; right: 20px; }
  .chat-widget { bottom: 20px; right: 20px; }
  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 580px) {
  .platform-cards {
    grid-template-columns: 1fr;
  }
  .social-platforms-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .chat-window {
    width: calc(100vw - 40px);
    max-height: calc(100vh - 100px);
    right: 0;
  }
  .hero-illustration {
    transform: scale(0.85);
    transform-origin: center;
    margin: -20px auto;
  }
  .hero-stats {
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
  }
  .stat-divider { display: none; }
}