/* ==========================================================================
   NFCuida - Corporate Medical-Tech Landing Page Stylesheet
   Design System: Deep Slate / Royal Blue / Emerald Trust / Crimson SOS
   Typography: Plus Jakarta Sans / Inter
   ========================================================================== */

:root {
  --bg-main: #090d16;
  --bg-surface: #0f172a;
  --bg-surface-elevated: #1e293b;
  --bg-glass: rgba(15, 23, 42, 0.75);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-focus: #38bdf8;
  
  --color-primary: #2563eb;
  --color-primary-glow: rgba(37, 99, 235, 0.35);
  --color-accent-cyan: #38bdf8;
  --color-success: #10b981;
  --color-success-glow: rgba(16, 185, 129, 0.25);
  --color-danger: #ef4444;
  --color-danger-glow: rgba(239, 68, 68, 0.25);
  --color-warning: #f59e0b;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
  --shadow-glow-emerald: 0 0 35px -5px rgba(16, 185, 129, 0.4);
  --shadow-glow-blue: 0 0 35px -5px rgba(37, 99, 235, 0.4);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

/* Background Atmosphere */
.bg-ambient {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.ambient-blob-1 {
  position: absolute;
  top: -15%;
  left: 20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.18) 0%, rgba(9, 13, 22, 0) 70%);
  filter: blur(80px);
}

.ambient-blob-2 {
  position: absolute;
  top: 40%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.12) 0%, rgba(9, 13, 22, 0) 70%);
  filter: blur(80px);
}

.ambient-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* Container */
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 13, 22, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glass);
  padding: 0.9rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #fff;
}

.brand-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, #1e3a8a 0%, #0284c7 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, #ffffff 0%, #7dd3fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 0.7rem;
  color: var(--color-success);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.brand-subtitle::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-success);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 8px var(--color-success);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: #fff;
}

.btn-nav-download {
  background: linear-gradient(135deg, #059669 0%, #10b981 100%);
  color: #fff;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 0.45rem;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
  transition: all 0.2s ease;
}

.btn-nav-download:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 4rem 0 3rem;
  text-align: center;
}

.badge-official {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 700;
  color: #34d399;
  letter-spacing: 0.04em;
  margin-bottom: 1.5rem;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.1);
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.03em;
  color: #ffffff;
  max-width: 860px;
  margin: 0 auto 1.25rem;
}

.hero-title span.highlight-blue {
  background: linear-gradient(90deg, #38bdf8 0%, #3b82f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title span.highlight-green {
  background: linear-gradient(90deg, #34d399 0%, #10b981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto 2.5rem;
  line-height: 1.65;
}

/* Hero CTA Button Area */
.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-bottom: 3rem;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.2rem;
  width: 100%;
}

.btn-cta-primary {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: linear-gradient(135deg, #047857 0%, #10b981 100%);
  color: #ffffff;
  text-decoration: none;
  padding: 1.1rem 1.75rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-glow-emerald), 0 10px 20px -5px rgba(16, 185, 129, 0.4);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  text-align: left;
}

.btn-cta-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 30px -5px rgba(16, 185, 129, 0.6);
}

.cta-icon-box {
  width: 46px;
  height: 46px;
  background: rgba(0, 0, 0, 0.25);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.cta-text-wrap {
  display: flex;
  flex-direction: column;
}

.cta-supertitle {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.9;
}

.cta-main-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.cta-meta-info {
  font-size: 0.75rem;
  opacity: 0.85;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-cta-secondary {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  background: rgba(30, 41, 59, 0.8);
  backdrop-filter: blur(10px);
  color: #ffffff;
  text-decoration: none;
  padding: 1.1rem 1.6rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: all 0.25s ease;
  text-align: left;
}

.btn-cta-secondary:hover {
  background: rgba(51, 65, 85, 0.9);
  border-color: #38bdf8;
  transform: translateY(-2px);
}

.btn-cta-secondary .cta-icon-box {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
}

/* Trust Badges Bar */
.trust-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  padding: 1.25rem 2rem;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  max-width: 900px;
  margin: 0 auto;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.trust-item-icon {
  font-size: 1.1rem;
}

/* ==========================================================================
   How It Works Section
   ========================================================================== */
.section-wrapper {
  padding: 4.5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  color: var(--color-accent-cyan);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  display: block;
}

.section-title {
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 0.8rem;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.step-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: var(--shadow-card);
}

.step-number {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  font-size: 3rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.04);
  line-height: 1;
}

.step-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.7rem;
  margin-bottom: 1.25rem;
}

.step-1-icon { background: rgba(59, 130, 246, 0.15); color: #60a5fa; }
.step-2-icon { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.step-3-icon { background: rgba(239, 68, 68, 0.15); color: #f87171; }

.step-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.7rem;
}

.step-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Ecosystem Modules Showcase (The Real Hub)
   ========================================================================== */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.module-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.25s ease;
  position: relative;
}

.module-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-card);
}

.module-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.module-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.module-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
}

.badge-emerald {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-blue {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.badge-amber {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-purple {
  background: rgba(168, 85, 247, 0.15);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.3);
}

.module-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.module-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.module-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 700;
  transition: all 0.2s ease;
}

.btn-style-emerald {
  background: #059669;
  color: #fff;
}
.btn-style-emerald:hover {
  background: #10b981;
}

.btn-style-slate {
  background: #1e293b;
  color: #f8fafc;
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.btn-style-slate:hover {
  background: #334155;
  border-color: #38bdf8;
}

/* ==========================================================================
   Foundation & Social Impact
   ========================================================================== */
.impact-banner {
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.4) 0%, rgba(15, 23, 42, 0.8) 100%);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-top: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  text-align: left;
}

.impact-badge {
  color: #93c5fd;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.impact-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
}

.impact-text {
  font-size: 0.95rem;
  color: #cbd5e1;
  line-height: 1.6;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-glass);
  padding: 3rem 0 2rem;
  background: #06090f;
  margin-top: 4rem;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand {
  max-width: 380px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 0.75rem;
}

.footer-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: #34d399;
  font-weight: 600;
  margin-top: 1rem;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.1rem;
  }
  .hero-description {
    font-size: 1rem;
  }
  .nav-links {
    display: none;
  }
  .trust-bar {
    gap: 1rem;
    padding: 1rem;
  }
  .trust-item {
    font-size: 0.78rem;
  }
  .btn-cta-primary, .btn-cta-secondary {
    width: 100%;
  }
  .cta-group {
    flex-direction: column;
  }
  .impact-banner {
    padding: 1.75rem;
  }
}

/* ==========================================================================
   Interactive Download Modal (Mobile-Optimized & Safe-Area Aware)
   ========================================================================== */
.download-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 7, 13, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 0.75rem;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.download-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.download-modal-card {
  position: relative;
  background: #0d1527;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  max-width: 440px;
  width: 100%;
  max-height: min(92vh, 92dvh);
  overflow-y: auto;
  padding: 1.25rem 1.15rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7), 0 0 35px rgba(16, 185, 129, 0.2);
  margin: auto;
  transform: translateY(15px) scale(0.98);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.download-modal-overlay.active .download-modal-card {
  transform: translateY(0) scale(1);
}

/* Modal Header Row: Icon + Title + Close Button */
.modal-header-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-align: left;
  margin-bottom: 0.85rem;
}

.modal-icon-badge-sm {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #059669 0%, #10b981 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.modal-header-text {
  flex: 1;
  min-width: 0;
}

.modal-header-text h3 {
  color: #ffffff;
  font-size: 1.1rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 0.15rem;
}

.modal-header-text p {
  color: #94a3b8;
  font-size: 0.78rem;
  line-height: 1.3;
}

.modal-close-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #94a3b8;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
}

.modal-progress-bar-wrap {
  width: 100%;
  height: 5px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  overflow: hidden;
  margin: 0.6rem 0 0.5rem;
}

.modal-progress-bar {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #10b981, #38bdf8, #10b981);
  background-size: 200% 100%;
  animation: barSlide 2s linear infinite;
}

@keyframes barSlide {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.modal-status-text {
  font-size: 0.8rem;
  color: #34d399;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.modal-instructions {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 14px;
  padding: 0.85rem 0.95rem;
  text-align: left;
  margin-bottom: 0.85rem;
}

.modal-instructions-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: #f1f5f9;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.modal-step {
  font-size: 0.77rem;
  color: #94a3b8;
  margin-bottom: 0.45rem;
  line-height: 1.4;
}

.modal-step:last-child {
  margin-bottom: 0;
}

.modal-step strong {
  color: #e2e8f0;
}

.modal-step-tag {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.73rem;
}

.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.btn-modal-retry {
  background: linear-gradient(135deg, #059669 0%, #10b981 100%);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.75rem 1rem;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  transition: all 0.2s ease;
}

.btn-modal-retry:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(16, 185, 129, 0.45);
}

.btn-modal-secondary {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
  padding: 0.65rem;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  display: block;
  text-align: center;
  transition: all 0.2s ease;
}

.btn-modal-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}