/* AURA GROUP - KNOCK (knockat.co.za)
 * Master Landing Website Stylesheet
 * Ultra-Clean, High-Converting Light Theme with Modern Typography & Sleek Cards
 */

:root {
  --bg-body: #f8fafc;
  --bg-gradient: linear-gradient(180deg, #f0f7fc 0%, #e2effa 100%);
  --color-primary: #0284c7;
  --color-primary-dark: #0369a1;
  --color-emerald: #10b981;
  --color-gold: #f59e0b;
  --color-purple: #8b5cf6;
  --color-text-title: #0f172a;
  --color-text-body: #334155;
  --color-text-muted: #64748b;
  --bg-card: #ffffff;
  --border-card: rgba(2, 132, 199, 0.16);
  --border-subtle: #e2e8f0;
  --shadow-card: 0 10px 30px -4px rgba(2, 132, 199, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-body);
  color: var(--color-text-body);
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* 1. NAVBAR */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 14px 24px;
}

.nav-container {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand-logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, #0284c7 0%, #06b6d4 100%);
  color: #ffffff;
  font-weight: 900;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 19px;
  font-weight: 900;
  color: #0284c7;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.brand-tld {
  color: #0369a1;
}

.brand-tagline {
  font-size: 10.5px;
  font-weight: 700;
  color: #64748b;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  color: var(--color-text-body);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: color 0.15s ease;
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn-nav-ghost {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  color: #475569;
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 9999px;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn-nav-ghost:hover {
  border-color: #cbd5e1;
  background: #f8fafc;
  color: #0f172a;
}

.btn-nav-cta {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #ffffff;
  text-decoration: none;
  font-size: 13px;
  font-weight: 800;
  padding: 9px 20px;
  border-radius: 9999px;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn-nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(2, 132, 199, 0.35);
}

/* 2. HERO SECTION */
.hero-section {
  background: var(--bg-gradient);
  padding: 60px 20px 80px 20px;
  text-align: center;
}

.hero-container {
  max-width: 1080px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(2, 132, 199, 0.08);
  border: 1px solid rgba(2, 132, 199, 0.2);
  color: #0284c7;
  padding: 6px 18px;
  border-radius: 9999px;
  font-size: 12.5px;
  font-weight: 700;
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.hero-title {
  font-size: 46px;
  font-weight: 900;
  color: var(--color-text-title);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 20px;
}

.text-gradient {
  background: linear-gradient(135deg, #0284c7 0%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-purple {
  background: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 16.5px;
  color: var(--color-text-muted);
  max-width: 780px;
  margin: 0 auto 32px auto;
  line-height: 1.6;
}

.hero-subtitle code {
  background: rgba(2, 132, 199, 0.1);
  color: #0284c7;
  padding: 2px 8px;
  border-radius: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 48px;
}

.btn-primary-hero {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 800;
  padding: 14px 26px;
  border-radius: 9999px;
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary-hero:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(16, 185, 129, 0.45);
}

.btn-secondary-hero {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  color: #0f172a;
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 800;
  padding: 14px 26px;
  border-radius: 9999px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
  transition: transform 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-secondary-hero:hover {
  transform: translateY(-2px);
  border-color: #f59e0b;
  color: #d97706;
}

.btn-ads-hero {
  background: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 100%);
  color: #ffffff;
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 800;
  padding: 14px 26px;
  border-radius: 9999px;
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-ads-hero:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(139, 92, 246, 0.45);
}

.btn-download-pill {
  background: rgba(15, 23, 42, 0.05);
  border: 1px solid var(--border-subtle);
  color: #334155;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  padding: 14px 20px;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
}

.btn-download-pill:hover {
  background: #ffffff;
  color: #0284c7;
}

/* Hero Visual Mockups - 3 Pillars */
.hero-mockup-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  max-width: 1040px;
  margin: 0 auto;
  text-align: left;
}

.mockup-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 22px;
  padding: 20px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.mockup-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.mockup-tag {
  font-size: 11px;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 9999px;
}

.green-tag {
  background: rgba(16, 185, 129, 0.1);
  color: #047857;
}

.gold-tag {
  background: rgba(245, 158, 11, 0.1);
  color: #d97706;
}

.purple-tag {
  background: rgba(139, 92, 246, 0.1);
  color: #7c3aed;
}

.mockup-status {
  font-size: 11px;
  font-weight: 700;
  color: #64748b;
}

.mockup-code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 24px;
  font-weight: 800;
  color: #0f172a;
}

.mockup-label {
  font-size: 12px;
  color: #64748b;
  margin-bottom: 12px;
}

.btn-mockup-action {
  display: inline-block;
  background: #0284c7;
  color: #ffffff;
  text-decoration: none;
  font-size: 12px;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 9999px;
  transition: opacity 0.15s ease;
  text-align: center;
}

.gold-action {
  background: #f59e0b !important;
}

.purple-action {
  background: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 100%) !important;
}

.mockup-star-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #f8fafc;
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 10px 14px;
  margin-bottom: 12px;
}

.item-ads {
  background: #fdf4ff !important;
  border-color: #f5d0fe !important;
}

.star-avatar {
  font-size: 24px;
}

.star-price {
  margin-left: auto;
  font-weight: 800;
  color: #d97706;
  font-size: 14px;
}

/* 3. PRODUCTS SECTION */
.products-section {
  padding: 80px 20px;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 50px auto;
}

.section-title {
  font-size: 36px;
  font-weight: 900;
  color: var(--color-text-title);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--color-text-muted);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 24px;
  padding: 30px 24px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px -8px rgba(2, 132, 199, 0.14);
}

.product-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 18px;
}

.icon-blue { background: rgba(2, 132, 199, 0.1); color: #0284c7; }
.icon-gold { background: rgba(245, 158, 11, 0.1); color: #d97706; }
.icon-cyan { background: rgba(6, 182, 212, 0.1); color: #0891b2; }
.icon-purple { background: rgba(168, 85, 247, 0.1); color: #9333ea; }

.product-title {
  font-size: 19px;
  font-weight: 800;
  color: var(--color-text-title);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.product-desc {
  font-size: 13.5px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  flex: 1;
}

.product-features {
  list-style: none;
  margin-bottom: 24px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-body);
}

.product-features li {
  margin-bottom: 6px;
}

.product-link {
  color: #0284c7;
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 800;
  margin-top: auto;
}

.gold-link {
  color: #d97706 !important;
}

/* 4. USSD SECTION */
.ussd-demo-section {
  padding: 40px 20px;
}

.ussd-card {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  border-radius: 28px;
  padding: 48px 32px;
  color: #ffffff;
  text-align: center;
}

.ussd-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 4px 14px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 800;
  margin-bottom: 16px;
}

.ussd-content h2 {
  font-size: 32px;
  font-weight: 900;
  margin-bottom: 10px;
}

.ussd-content p {
  font-size: 15px;
  color: #e0f2fe;
  max-width: 600px;
  margin: 0 auto 24px auto;
}

.ussd-code-box {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  background: #ffffff;
  border-radius: 9999px;
  padding: 8px 12px 8px 24px;
}

.ussd-code-box code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 22px;
  font-weight: 900;
  color: #0f172a;
}

.btn-ussd-dial {
  background: #10b981;
  color: #ffffff;
  text-decoration: none;
  font-size: 13px;
  font-weight: 800;
  padding: 10px 20px;
  border-radius: 9999px;
}

/* 5. DOWNLOAD SECTION */
.download-section {
  padding: 60px 20px;
}

.download-banner {
  background: #ffffff;
  border: 1px solid var(--border-card);
  border-radius: 28px;
  padding: 48px 36px;
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.download-text h2 {
  font-size: 32px;
  font-weight: 900;
  color: var(--color-text-title);
  margin-bottom: 8px;
}

.download-text p {
  font-size: 15px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.download-buttons {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.btn-download-large {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 800;
  padding: 14px 24px;
  border-radius: 14px;
  box-shadow: 0 6px 18px rgba(16, 185, 129, 0.3);
}

.btn-download-guide {
  color: #0284c7;
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 700;
}

.app-icon-large {
  width: 96px;
  height: 96px;
  border-radius: 26px;
  background: linear-gradient(135deg, #0284c7 0%, #06b6d4 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 30px rgba(2, 132, 199, 0.3);
}

.app-icon-large img {
  width: 60px;
  height: 60px;
}

/* 6. FOOTER */
.footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 60px 20px 40px 20px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 40px;
}

.footer-logo {
  font-size: 22px;
  font-weight: 900;
  color: #ffffff;
}

.footer-logo span {
  color: #38bdf8;
}

.footer-brand p {
  font-size: 13px;
  margin: 8px 0;
  max-width: 340px;
}

.copyright {
  font-size: 11.5px;
  color: #64748b;
  margin-top: 14px !important;
}

.footer-links {
  display: flex;
  gap: 60px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
}

.footer-col a {
  display: block;
  color: #94a3b8;
  text-decoration: none;
  font-size: 13px;
  margin-bottom: 8px;
  transition: color 0.15s ease;
}

.footer-col a:hover {
  color: #38bdf8;
}

/* ==========================================================================
   2.5 HOW IT WORKS INTERACTIVE JOURNEY (Reference Banner & Simulator)
   ========================================================================== */
.how-it-works-section {
  padding: 80px 24px;
  background: #f8fafc;
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
  position: relative;
  overflow: hidden;
}

.how-header-wrap {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 40px auto;
}

.how-badge {
  display: inline-block;
  background: rgba(2, 132, 199, 0.1);
  color: #0284c7;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 9999px;
  margin-bottom: 14px;
}

.how-main-title {
  font-size: 38px;
  font-weight: 900;
  color: #0f172a;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.how-main-subtitle {
  font-size: 16px;
  color: #475569;
  line-height: 1.6;
}

/* Reference 3-Step Banner Card */
.process-banner-card {
  background: linear-gradient(135deg, #0f2b48 0%, #0d3b66 50%, #154c79 100%);
  border-radius: 28px;
  padding: 48px 36px;
  box-shadow: 0 20px 40px -10px rgba(13, 59, 102, 0.35);
  position: relative;
  margin-bottom: 48px;
  color: #ffffff;
}

.process-track-line {
  position: absolute;
  top: 86px;
  left: 14%;
  right: 14%;
  height: 3px;
  background: linear-gradient(90deg, #38bdf8 0%, #06b6d4 50%, #38bdf8 100%);
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.8);
  z-index: 1;
}

.process-steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  position: relative;
  z-index: 2;
}

.process-step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
  opacity: 0.82;
  padding: 10px;
  border-radius: 18px;
}

.process-step-item:hover,
.process-step-item.active {
  opacity: 1;
  transform: translateY(-3px);
}

.step-circle-badge {
  position: relative;
  width: 84px;
  height: 84px;
  border-radius: 50%;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  box-shadow: 0 0 0 6px rgba(56, 189, 248, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
  transition: all 0.25s ease;
}

.process-step-item.active .step-circle-badge {
  box-shadow: 0 0 0 8px rgba(56, 189, 248, 0.6), 0 0 28px rgba(56, 189, 248, 0.7);
  transform: scale(1.06);
}

.step-num-pill {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #0284c7;
  color: #ffffff;
  font-size: 13px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #ffffff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.step-meta-label {
  font-size: 11px;
  font-weight: 800;
  color: #38bdf8;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.step-headline {
  font-size: 17.5px;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.35;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.step-subtext {
  font-size: 13px;
  color: rgba(241, 245, 249, 0.85);
  line-height: 1.5;
  max-width: 280px;
}

/* Simulator Wrapper */
.simulator-wrapper {
  max-width: 520px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.simulator-controls {
  display: flex;
  gap: 8px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 9999px;
  padding: 6px;
  margin-bottom: 24px;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.05);
}

.sim-tab-btn {
  background: transparent;
  border: none;
  padding: 8px 16px;
  border-radius: 9999px;
  font-size: 12.5px;
  color: #64748b;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.sim-tab-btn:hover {
  color: #0f172a;
}

.sim-tab-btn.active {
  background: #0284c7;
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.3);
}

.sim-tab-btn.active .sim-step-tag {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

.sim-step-tag {
  font-size: 10px;
  font-weight: 800;
  background: #f1f5f9;
  color: #475569;
  padding: 2px 6px;
  border-radius: 6px;
  text-transform: uppercase;
}

/* Phone Frame */
.simulator-phone-frame {
  width: 100%;
  max-width: 360px;
  background: #ffffff;
  border: 8px solid #0f172a;
  border-radius: 40px;
  box-shadow: 0 25px 60px -15px rgba(15, 23, 42, 0.25), 0 0 0 1px #cbd5e1;
  overflow: hidden;
  position: relative;
}

.sim-phone-header {
  background: #ffffff;
  padding: 10px 18px 6px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  font-weight: 700;
  color: #0f172a;
  border-bottom: 1px solid #f1f5f9;
}

.sim-phone-notch {
  width: 70px;
  height: 14px;
  background: #0f172a;
  border-radius: 0 0 10px 10px;
}

.sim-phone-signals {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
}

.sim-phone-screen {
  background: #f8fafc;
  min-height: 480px;
  padding: 16px;
  position: relative;
}

.sim-stage-view {
  display: none;
  animation: fadeInStage 0.25s ease forwards;
}

.sim-stage-view.active {
  display: block;
}

@keyframes fadeInStage {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.sim-stage-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.sim-brand-pill {
  font-size: 18px;
  font-weight: 900;
  color: #0284c7;
  letter-spacing: -0.02em;
}

.sim-mode-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  background: #0f172a;
  color: #ffffff;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.4px;
}

/* Stage 1: Welcome */
.sim-welcome-box {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  padding: 24px 16px;
  text-align: center;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
}

.sim-avatar-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #e0f2fe;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px auto;
}

.sim-welcome-title {
  font-size: 18px;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 8px;
}

.sim-welcome-desc {
  font-size: 12.5px;
  color: #64748b;
  line-height: 1.5;
  margin-bottom: 16px;
}

.sim-quick-hint {
  background: #f1f5f9;
  color: #334155;
  font-size: 11.5px;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 10px;
  margin-bottom: 20px;
}

.btn-sim-action {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #ffffff;
  border: none;
  font-size: 13px;
  font-weight: 800;
  padding: 10px 20px;
  border-radius: 9999px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
  transition: transform 0.15s ease;
}

.btn-sim-action:hover {
  transform: translateY(-1px);
}

/* Stage 2: Keypad */
.sim-dial-display-box {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 12px 14px;
  text-align: center;
  margin-bottom: 14px;
}

.sim-dialed-number {
  font-size: 24px;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: 0.5px;
  min-height: 32px;
}

.sim-dialed-carrier {
  font-size: 11px;
  font-weight: 700;
  color: #10b981;
}

.sim-keypad-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 14px;
}

.sim-key {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  height: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.sim-key .k-num {
  font-size: 17px;
  font-weight: 800;
  color: #0f172a;
  line-height: 1;
}

.sim-key .k-sub {
  font-size: 8px;
  font-weight: 700;
  color: #94a3b8;
  letter-spacing: 0.5px;
}

.sim-key.active-tap {
  animation: keyPulse 2s infinite ease-in-out;
}

@keyframes keyPulse {
  0%, 100% { background: #ffffff; border-color: #e2e8f0; }
  50% { background: #e0f2fe; border-color: #38bdf8; transform: scale(0.96); }
}

.sim-dial-btn-row {
  display: flex;
  justify-content: center;
}

.sim-green-dial-btn {
  background: #16a34a;
  color: #ffffff;
  border: none;
  border-radius: 9999px;
  padding: 10px 24px;
  font-size: 13.5px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(22, 163, 74, 0.35);
  transition: transform 0.15s ease;
}

.sim-green-dial-btn.pulse-dial {
  animation: pulseDialBtn 2s infinite;
}

@keyframes pulseDialBtn {
  0%, 100% { transform: scale(1); box-shadow: 0 4px 14px rgba(22, 163, 74, 0.35); }
  50% { transform: scale(1.04); box-shadow: 0 6px 20px rgba(22, 163, 74, 0.5); }
}

/* Stage 3: Connected */
.sim-call-connected-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 22px;
  padding: 24px 16px;
  text-align: center;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.05);
}

.sim-avatar-pulse-ring {
  position: relative;
  width: 72px;
  height: 72px;
  margin: 0 auto 14px auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sim-pulse-wave {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px solid #16a34a;
  animation: pulseWave 1.8s infinite cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@keyframes pulseWave {
  0% { transform: scale(0.9); opacity: 0.8; }
  100% { transform: scale(1.4); opacity: 0; }
}

.sim-avatar-initials {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
  color: #ffffff;
  font-size: 22px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(22, 163, 74, 0.3);
}

.sim-peer-name {
  font-size: 16px;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 4px;
}

.sim-call-badge {
  display: inline-block;
  background: #dcfce7;
  color: #166534;
  font-size: 10.5px;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 9999px;
  margin-bottom: 12px;
}

.sim-timer-display {
  font-size: 22px;
  font-weight: 900;
  color: #0284c7;
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 12px;
}

/* Audio Waveform */
.sim-audio-waveform {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  height: 24px;
  margin-bottom: 16px;
}

.sim-audio-waveform .bar {
  width: 4px;
  background: #0284c7;
  border-radius: 2px;
  animation: waveAnim 1.2s infinite ease-in-out;
}

.b1 { height: 8px; animation-delay: 0.1s; }
.b2 { height: 16px; animation-delay: 0.2s; }
.b3 { height: 22px; animation-delay: 0.4s; }
.b4 { height: 12px; animation-delay: 0.15s; }
.b5 { height: 24px; animation-delay: 0.3s; }
.b6 { height: 18px; animation-delay: 0.25s; }
.b7 { height: 10px; animation-delay: 0.35s; }

@keyframes waveAnim {
  0%, 100% { transform: scaleY(0.4); }
  50% { transform: scaleY(1); }
}

.sim-sponsor-tag {
  background: #f1f5f9;
  border: 1px dashed #cbd5e1;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 11px;
  color: #475569;
  margin-bottom: 20px;
}

.sim-sponsor-tag strong {
  color: #e11d48;
}

.sim-incall-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.sim-control-btn {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  font-size: 10px;
  font-weight: 700;
  color: #475569;
  cursor: pointer;
}

.sim-control-btn.active {
  background: #e0f2fe;
  border-color: #38bdf8;
  color: #0284c7;
}

.sim-control-btn.btn-end-call {
  background: #ffe4e6;
  border-color: #fecdd3;
  color: #e11d48;
}

/* Responsive Overrides */
@media (max-width: 900px) {
  .nav-menu { display: none; }
  .hero-title { font-size: 34px; }
  .download-banner { flex-direction: column; text-align: center; }
  .download-buttons { justify-content: center; }
  .process-steps-row { grid-template-columns: 1fr; gap: 32px; }
  .process-track-line { display: none; }
  .process-banner-card { padding: 32px 20px; }
}