/* ==========================================================================
   OpenClinic Landing Page — Modern Design System (CSS)
   Aesthetics: Deep Slate & Clinical Teal (No Purple/Violet)
   Typography: Plus Jakarta Sans & JetBrains Mono
   ========================================================================== */

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

:root {
  /* Color Tokens */
  --color-brand-primary: #0d9488;
  --color-brand-hover: #0b7c72;
  --color-brand-light: #ccfbf1;
  --color-brand-subtle: #f0fdfa;
  --color-brand-glow: rgba(13, 148, 136, 0.25);

  --color-slate-950: #07191f;
  --color-slate-900: #0b252f;
  --color-slate-800: #123b4a;
  --color-slate-700: #1d4d5e;
  --color-slate-600: #335d6e;
  --color-slate-500: #526b75;
  --color-slate-400: #7a949e;
  --color-slate-200: #d6e3e5;
  --color-slate-100: #eaf1f2;
  --color-slate-50: #f4f8f8;
  --color-white: #ffffff;

  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(11, 37, 47, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(11, 37, 47, 0.08), 0 2px 4px -2px rgba(11, 37, 47, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(11, 37, 47, 0.1), 0 4px 6px -4px rgba(11, 37, 47, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(11, 37, 47, 0.12), 0 8px 10px -6px rgba(11, 37, 47, 0.05);
  --shadow-glow: 0 0 35px rgba(13, 148, 136, 0.22);

  /* Layout */
  --max-width: 1200px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-slate-800);
  background-color: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

button, input, select, textarea {
  font-family: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-brand-primary);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--color-brand-primary);
  color: var(--color-white);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 600;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

.container {
  width: min(var(--max-width), calc(100% - 48px));
  margin: 0 auto;
}

/* ==========================================================================
   Header & Navbar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-slate-200);
  transition: var(--transition);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-link .logo-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  transition: transform 0.25s ease;
}

.brand-link:hover .logo-img {
  transform: scale(1.05);
}

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

.brand-name {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.8px;
  color: var(--color-slate-900);
  line-height: 1.1;
}

.brand-name span {
  color: var(--color-brand-primary);
}

.brand-badge {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--color-slate-500);
  text-transform: uppercase;
  margin-top: 2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-item {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-slate-600);
}

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-brand-primary);
  color: var(--color-white);
  box-shadow: 0 2px 4px rgba(13, 148, 136, 0.2);
}

.btn-primary:hover {
  background-color: var(--color-brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(13, 148, 136, 0.3);
}

.btn-outline {
  border-color: var(--color-slate-200);
  color: var(--color-slate-800);
  background-color: transparent;
}

.btn-outline:hover {
  border-color: var(--color-brand-primary);
  color: var(--color-brand-primary);
  background-color: var(--color-brand-subtle);
}

.btn-white {
  background-color: var(--color-white);
  color: var(--color-slate-900);
  box-shadow: var(--shadow-md);
}

.btn-white:hover {
  background-color: var(--color-brand-subtle);
  color: var(--color-brand-primary);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 70px 0 90px;
  overflow: hidden;
  background: radial-gradient(120% 80% at 50% 0%, #edf8f6 0%, #ffffff 70%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background-color: var(--color-white);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-brand-primary);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-brand-primary);
  border-radius: 50%;
  position: relative;
}

.pulse-dot::after {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  border-radius: 50%;
  background-color: var(--color-brand-primary);
  opacity: 0.4;
  animation: pulseAnimation 2s infinite;
}

@keyframes pulseAnimation {
  0% { transform: scale(1); opacity: 0.4; }
  50% { transform: scale(1.8); opacity: 0; }
  100% { transform: scale(1); opacity: 0; }
}

.hero-title {
  font-size: clamp(38px, 4.4vw, 58px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.8px;
  color: var(--color-slate-950);
  margin-bottom: 20px;
}

.hero-title em {
  font-style: normal;
  color: var(--color-brand-primary);
  background: linear-gradient(135deg, #0d9488 0%, #059669 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 18px;
  line-height: 1.65;
  color: var(--color-slate-600);
  max-width: 580px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-metadata {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13px;
  color: var(--color-slate-500);
  border-top: 1px solid var(--color-slate-200);
  padding-top: 20px;
}

.hero-metadata-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Hero Visual / Mockup Showcase */
.hero-visual-card {
  position: relative;
  display: flex;
  justify-content: center;
}

.mockup-wrapper {
  position: relative;
  width: 100%;
  border-radius: var(--radius-lg);
  background: var(--color-slate-900);
  padding: 10px;
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  border: 1px solid rgba(255, 255, 255, 0.15);
  transform: perspective(1000px) rotateY(-3deg) rotateX(2deg);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.mockup-wrapper:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg) translateY(-4px);
  box-shadow: 0 25px 40px -10px rgba(11, 37, 47, 0.25), 0 0 50px rgba(13, 148, 136, 0.35);
}

.mockup-topbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px 10px;
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #374151;
}

.mockup-dot.red { background: #ef4444; }
.mockup-dot.yellow { background: #f59e0b; }
.mockup-dot.green { background: #10b981; }

.mockup-title {
  margin-left: 8px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--color-slate-400);
}

.mockup-img {
  width: 100%;
  height: auto;
  border-radius: calc(var(--radius-lg) - 6px);
  display: block;
}

/* Floating Badges */
.floating-badge {
  position: absolute;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-lg);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-slate-900);
  animation: float 4s ease-in-out infinite;
}

.badge-fhir {
  top: -15px;
  left: -20px;
}

.badge-security {
  bottom: -20px;
  right: -15px;
  animation-delay: -2s;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

.badge-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--color-brand-light);
  color: var(--color-brand-primary);
  display: grid;
  place-items: center;
  font-size: 14px;
}

/* ==========================================================================
   Pillars & Architecture Section
   ========================================================================== */
.section {
  padding: 90px 0;
}

.section-pale {
  background-color: var(--color-slate-50);
}

.section-header {
  max-width: 680px;
  margin-bottom: 56px;
}

.section-eyebrow {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-brand-primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(30px, 3.2vw, 42px);
  font-weight: 800;
  letter-spacing: -1.2px;
  line-height: 1.15;
  color: var(--color-slate-950);
  margin-bottom: 16px;
}

.section-lead {
  font-size: 17px;
  color: var(--color-slate-600);
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.pillar-card {
  background: var(--color-white);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.pillar-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-brand-primary);
  box-shadow: var(--shadow-lg);
}

.pillar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.pillar-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-brand-primary);
}

.pillar-icon-box {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--color-brand-subtle);
  color: var(--color-brand-primary);
  display: grid;
  place-items: center;
}

.pillar-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--color-slate-900);
  margin-bottom: 12px;
}

.pillar-desc {
  font-size: 14px;
  color: var(--color-slate-600);
  line-height: 1.6;
}

/* ==========================================================================
   Interactive FHIR / Architecture Demonstration
   ========================================================================== */
.demo-section {
  background: var(--color-slate-900);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.demo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.demo-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  background: rgba(255, 255, 255, 0.08);
  padding: 4px;
  border-radius: var(--radius-sm);
  width: fit-content;
}

.demo-tab-btn {
  background: transparent;
  border: 0;
  color: var(--color-slate-400);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
}

.demo-tab-btn.active {
  background: var(--color-brand-primary);
  color: var(--color-white);
}

.code-window {
  background: var(--color-slate-950);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.code-title {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-slate-400);
}

.code-body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  max-height: 380px;
  overflow-y: auto;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* ==========================================================================
   Roadmap & Community
   ========================================================================== */
.roadmap-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.roadmap-step {
  background: var(--color-white);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 28px;
  position: relative;
}

.roadmap-step.active {
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 1px var(--color-brand-primary), var(--shadow-md);
}

.roadmap-tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.tag-current {
  background: var(--color-brand-light);
  color: var(--color-brand-primary);
}

.tag-upcoming {
  background: var(--color-slate-100);
  color: var(--color-slate-500);
}

/* Community Join Banner */
.join-banner {
  background: linear-gradient(135deg, var(--color-slate-900) 0%, var(--color-slate-800) 100%);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 56px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 56px;
  align-items: center;
  box-shadow: var(--shadow-xl);
  margin-top: 60px;
}

.join-banner h3 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.join-banner p {
  color: var(--color-slate-300);
  font-size: 16px;
  margin-bottom: 28px;
}

.join-aside {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 28px;
}

/* ==========================================================================
   Contact Section & Enhanced Form
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 32px;
}

.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--color-white);
  border: 1px solid var(--color-slate-200);
}

.contact-info-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--color-brand-subtle);
  color: var(--color-brand-primary);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

/* Contact Form */
.form-card {
  background: var(--color-white);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

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

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-slate-800);
  margin-bottom: 8px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid var(--color-slate-200);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--color-slate-900);
  background-color: var(--color-white);
  transition: var(--transition);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 4px var(--color-brand-glow);
}

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

/* Honeypot field (hidden from real users, traps bots) */
.honeypot-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

/* Feedback Alerts — Success Banner Prominent */
.alert-feedback {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-top: 16px;
  display: none;
  animation: fadeIn 0.3s ease;
  transition: opacity 0.5s ease;
  position: relative;
}

.alert-success {
  background-color: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-left: 5px solid #059669;
  border-radius: var(--radius-sm);
  color: #064e3b;
  padding: 16px 20px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  box-shadow: 0 4px 16px rgba(5, 150, 105, 0.1);
  font-size: 14px;
}

.alert-success .alert-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background-color: #059669;
  color: #ffffff;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.alert-success .alert-body strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: #064e3b;
  margin-bottom: 4px;
}

.alert-success .alert-body p {
  margin: 0;
  color: #047857;
  font-size: 13.5px;
  line-height: 1.5;
}

.alert-close {
  background: transparent;
  border: none;
  color: inherit;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  padding: 2px 6px;
  margin-left: auto;
  opacity: 0.6;
  border-radius: 4px;
  transition: opacity 0.2s ease, background-color 0.2s ease;
}

.alert-close:hover {
  opacity: 1;
  background-color: rgba(0, 0, 0, 0.05);
}

.alert-error {
  background-color: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

.alert-info {
  background-color: #f0fdfa;
  border: 1px solid #99f6e4;
  color: #115e59;
}

.alert-icon {
  font-size: 28px;
  flex-shrink: 0;
  line-height: 1;
}

.alert-body strong {
  display: block;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.alert-body p {
  margin: 0;
  opacity: 0.9;
  font-size: 13px;
  line-height: 1.5;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: var(--color-slate-950);
  color: var(--color-slate-400);
  padding: 60px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.footer-brand p {
  max-width: 380px;
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.6;
}

.footer-nav {
  display: flex;
  gap: 48px;
}

.footer-col h4 {
  color: var(--color-white);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13px;
}

.footer-col a:hover {
  color: var(--color-brand-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 12px;
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .pillars-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .demo-grid {
    grid-template-columns: 1fr;
  }

  .join-banner {
    grid-template-columns: 1fr;
    padding: 36px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .container {
    width: calc(100% - 32px);
  }

  .nav-menu {
    display: none; /* Mobile navigation simplified */
  }

  .pillars-grid {
    grid-template-columns: 1fr;
  }

  .roadmap-container {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .form-card {
    padding: 24px;
  }

  .floating-badge {
    display: none;
  }
}