:root {
  --color-background: #f8fafb;
  --color-surface: #ffffff;
  --color-text: #1a2b32;
  --color-text-secondary: #5a6b73;
  --color-primary: #52C4B0;
  --color-primary-hover: #47b5a2;
  --color-primary-active: #3da89a;
  --color-border: rgba(26, 43, 50, 0.08);
  --color-btn-primary-text: #ffffff;

  --font-family-base: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.08);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.10);

  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);

  --container-max: 1200px;
}

/* ── Reset ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font-family-base); color: var(--color-text); background: var(--color-background); -webkit-font-smoothing: antialiased; line-height: 1.6; }
h1,h2,h3,h4,h5,h6 { margin: 0; line-height: 1.15; }
p { margin: 0 0 16px; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--duration-fast) var(--ease); }
a:hover { color: var(--color-primary-hover); }
img { max-width: 100%; height: auto; display: block; }

/* ── Container ─────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Typography ────────────────────────────────── */
h1 {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #1a2b32 30%, #52C4B0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2 {
  font-size: clamp(28px, 3.5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

h3 {
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 700;
  color: var(--color-text);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: clamp(16px, 1.5vw, 20px);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: 12px;
}

/* ── Buttons ───────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-family-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease);
  text-decoration: none;
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--color-btn-primary-text);
}
.btn--sm { padding: 8px 20px; font-size: 14px; }
.btn--lg { padding: 14px 28px; font-size: 16px; }

/* ── Header ────────────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 250, 251, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--duration-normal) var(--ease);
}
.header--scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: 24px;
}

.logo-img { height: 48px; width: auto; }

.navbar__menu {
  display: flex;
  gap: 32px;
  align-items: center;
}
.navbar__link {
  color: var(--color-text-secondary);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease);
}
.navbar__link:hover { color: var(--color-primary); }

.navbar__actions .btn--sm {
  border-radius: var(--radius-full);
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  gap: 5px;
}
.navbar__toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--duration-fast) var(--ease);
}

/* ── Hero ──────────────────────────────────────── */
.hero {
  padding: 80px 0 100px;
  background: var(--color-background);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -100px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(82, 196, 176, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  min-height: 480px;
}

.hero__title {
  margin-bottom: 16px;
}

.hero__subtitle-main {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero__subtitle {
  font-size: clamp(16px, 1.3vw, 18px);
  color: var(--color-text-secondary);
  margin-bottom: 40px;
  line-height: 1.7;
  max-width: 520px;
}

.hero__buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__image {
  display: flex;
  justify-content: center;
}

/* ── App Store Buttons ─────────────────────────── */
.app-store-btn,
.rustore-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-primary);
  color: white;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--duration-normal) var(--ease);
  border: none;
  min-width: 180px;
}
.app-store-btn:hover,
.rustore-btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: white;
}
.app-btn__icon-svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}
.app-btn__text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.app-btn__text small { font-size: 11px; opacity: 0.9; }
.app-btn__text strong { font-size: 15px; font-weight: 600; }

/* ── Phone Mockup ──────────────────────────────── */
.phone-mockup {
  width: 280px;
  height: 580px;
  background: #1a1a1a;
  border-radius: 44px;
  padding: 12px;
  position: relative;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.1),
    0 30px 60px rgba(0,0,0,0.15),
    inset 0 0 0 1px rgba(255,255,255,0.05);
}

.phone-mockup::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 28px;
  background: #1a1a1a;
  border-radius: 0 0 16px 16px;
  z-index: 2;
}

.phone-mockup::after {
  content: '';
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 10px;
  height: 10px;
  background: #2a2a2a;
  border-radius: 50%;
  z-index: 3;
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: white;
  border-radius: 34px;
  overflow: hidden;
  position: relative;
}

.hero-app-screenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── Features Section ──────────────────────────── */
.features {
  padding: 100px 0;
  background: var(--color-surface);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 36px 40px;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--duration-normal) var(--ease);
}
.feature-item:hover {
  background: var(--color-background);
}
.feature-item:nth-child(odd) {
  border-right: 1px solid var(--color-border);
}
.feature-item:nth-last-child(-n+2) {
  border-bottom: none;
}

.feature-num {
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  color: var(--color-primary);
  opacity: 0.3;
  flex-shrink: 0;
  min-width: 52px;
  letter-spacing: -0.03em;
}
.feature-item:hover .feature-num {
  opacity: 0.7;
}

.feature-body {
  flex: 1;
}

.feature-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-description {
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.6;
  margin: 0;
}

/* ── Medical Features Section ──────────────────── */
.medical-features {
  padding: 100px 0;
  background: var(--color-background);
}

.medical-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.medical-card {
  display: flex;
  gap: 0;
  background: var(--color-surface);
  border-radius: 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
  margin-right: -1px;
  transition: box-shadow var(--duration-normal) var(--ease);
}
.medical-card:first-child {
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}
.medical-card:last-child {
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  margin-right: 0;
}
.medical-card:hover {
  box-shadow: var(--shadow-lg);
  z-index: 1;
}

.medical-card__accent {
  width: 4px;
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--color-primary), var(--color-primary-active));
}

.medical-card__content {
  padding: 36px 32px;
}
.medical-card__content .eyebrow {
  margin-bottom: 8px;
}

.medical-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 20px;
}

.medical-list {
  list-style: none;
  padding: 0;
  margin: 0;
  text-align: left;
}
.medical-list li {
  padding: 6px 0;
  color: var(--color-text-secondary);
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.5;
}
.medical-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* ── Showcase Section (zigzag phone+text) ──────── */
.showcase {
  padding: 60px 0 0;
}

.showcase-row {
  padding: 60px 0;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.showcase-row.visible {
  opacity: 1;
  transform: translateY(0);
}

.showcase-row:nth-child(odd) {
  background: var(--color-background);
}
.showcase-row:nth-child(even) {
  background: var(--color-surface);
}

.showcase-row__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
}

.showcase-row--reverse .showcase-phone { order: 2; }
.showcase-row--reverse .showcase-copy { order: 1; }

.showcase-phone {
  display: flex;
  justify-content: center;
}

.showcase-phone .phone-mockup {
  width: 260px;
  height: 540px;
}

.showcase-copy {
  max-width: 480px;
}
.showcase-copy h2 {
  margin-bottom: 16px;
}
.showcase-copy .lead {
  font-size: clamp(15px, 1.2vw, 17px);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* ── Testimonials (hidden) ─────────────────────── */
.testimonials { display: none; }

/* ── Download (CTA) Section ────────────────────── */
.download {
  padding: 100px 0;
  background: linear-gradient(135deg, #52C4B0, #3da89a);
  text-align: center;
}

.download-title {
  font-size: clamp(28px, 3.5vw, 48px);
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
}

.download-subtitle {
  font-size: clamp(16px, 1.3vw, 20px);
  color: rgba(255,255,255,0.9);
  margin-bottom: 48px;
}

.download-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.download .app-store-btn,
.download .rustore-btn {
  background: white;
  color: var(--color-primary);
}
.download .app-store-btn:hover,
.download .rustore-btn:hover {
  background: #f0f0f0;
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ── Footer ────────────────────────────────────── */
.footer {
  background: #1a2b32;
  color: white;
  padding: 64px 0 24px;
}

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

.footer-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.footer-heading {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
}

.footer-description,
.footer-text {
  color: rgba(255,255,255,0.7);
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.6;
}

.footer-link {
  color: rgba(255,255,255,0.7);
  display: block;
  margin-bottom: 10px;
  font-size: 15px;
  transition: color var(--duration-fast) var(--ease);
}
.footer-link:hover { color: var(--color-primary); }

.social-links {
  display: flex;
  gap: 10px;
}
.social-link {
  color: rgba(255,255,255,0.7);
  padding: 8px 16px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: all var(--duration-fast) var(--ease);
}
.social-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  text-align: center;
}
.copyright {
  color: rgba(255,255,255,0.4);
  margin: 0;
  font-size: 13px;
}

/* ── Scrollbar ─────────────────────────────────── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-background); }
::-webkit-scrollbar-thumb { background: var(--color-primary); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-primary-hover); }

/* ── Mobile Responsive ─────────────────────────── */
@media (max-width: 1024px) {
  .medical-grid { grid-template-columns: 1fr; gap: 16px; }
  .medical-card { border-radius: var(--radius-lg) !important; margin-right: 0; }
  .footer-content { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .navbar__menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: 16px 24px;
    border-top: 1px solid var(--color-border);
    gap: 12px;
    box-shadow: var(--shadow-md);
  }
  .navbar__menu.active { display: flex; }
  .navbar__toggle { display: flex; }
  .navbar__actions { display: none; }

  .hero { padding: 48px 0 64px; }
  .hero__content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero__subtitle { margin-left: auto; margin-right: auto; }
  .hero__buttons { justify-content: center; }

  .phone-mockup { width: 220px; height: 460px; }
  .phone-mockup::before { width: 80px; height: 22px; }

  .features { padding: 64px 0; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-item:nth-child(odd) { border-right: none; }
  .feature-item { padding: 24px 20px; }

  .medical-features { padding: 64px 0; }
  .medical-grid { grid-template-columns: 1fr; }

  .showcase { padding: 32px 0 0; }
  .showcase-row { padding: 40px 0; }
  .showcase-row__inner {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }
  .showcase-row--reverse .showcase-phone { order: 0; }
  .showcase-row--reverse .showcase-copy { order: 0; }
  .showcase-copy { max-width: 100%; margin: 0 auto; }
  .showcase-phone .phone-mockup { width: 220px; height: 460px; }

  .download { padding: 64px 0; }
  .download-buttons { flex-direction: column; align-items: center; }

  .footer { padding: 48px 0 24px; }
  .footer-content { grid-template-columns: 1fr; gap: 32px; }

  .section-header { margin-bottom: 40px; }
}

@media (max-width: 480px) {
  .hero__subtitle-main { font-size: 22px; }
  .phone-mockup { width: 200px; height: 420px; }
  .phone-mockup::before { width: 70px; height: 20px; }
  .showcase-phone .phone-mockup { width: 200px; height: 420px; }
  .app-btn__icon-svg { width: 24px; height: 24px; }
  .app-store-btn, .rustore-btn { min-width: 160px; padding: 12px 20px; }
}