/* Umuti Konse Medicine – Public website styles */

:root {
  --color-primary: #0d9488;
  --color-primary-dark: #0f766e;
  --color-primary-light: #5eead4;
  --color-surface: #f0fdfa;
  --color-text: #134e4a;
  --color-text-muted: #5a7a77;
  --color-white: #ffffff;
  --color-border: #99f6e4;
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-display: 'Outfit', system-ui, sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --radius: 0.75rem;
  --shadow: 0 4px 14px rgba(13, 148, 136, 0.12);
  --max-width: 960px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-white);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.5rem;
  padding: var(--space-sm) var(--space-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-primary-dark);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-img {
  height: 2rem;
  width: auto;
  object-fit: contain;
}

.logo-text { color: var(--color-primary-dark); }
.logo-tagline {
  color: var(--color-primary);
  font-weight: 500;
  margin-left: 0.25rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-xs);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
}

.nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: var(--space-lg);
}

.nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
}

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

@media (max-width: 640px) {
  .nav-toggle { display: flex; }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md);
    display: none;
  }
  .nav.is-open { display: block; }
  .nav ul { flex-direction: column; gap: var(--space-sm); }
}

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--color-surface) 0%, var(--color-white) 60%);
  padding: var(--space-2xl) var(--space-md);
}

.hero-inner {
  text-align: center;
}

.hero-logo {
  display: block;
  margin: 0 auto var(--space-md);
  max-width: 200px;
  height: auto;
  object-fit: contain;
}

.hero h1 {
  margin: 0 0 var(--space-md);
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.2;
}

.hero-tagline {
  margin: 0 0 var(--space-xl);
  max-width: 36ch;
  margin-left: auto;
  margin-right: auto;
  font-size: 1.125rem;
  color: var(--color-text-muted);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-secondary {
  background: var(--color-white);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-surface);
}

/* Sections */
.section {
  padding: var(--space-2xl) var(--space-md);
}

.section h2 {
  margin: 0 0 var(--space-lg);
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--color-primary-dark);
  text-align: center;
}

/* Features */
.features { background: var(--color-white); }

.feature-grid {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-lg);
}

.feature-grid li {
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.feature-icon {
  display: block;
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.feature-grid h3 {
  margin: 0 0 var(--space-xs);
  font-size: 1.125rem;
  color: var(--color-primary-dark);
}

.feature-grid p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* About */
.about { background: var(--color-surface); }

.about-lead {
  max-width: 50ch;
  margin: 0 auto var(--space-lg);
  text-align: center;
  color: var(--color-text-muted);
}

.about-points {
  max-width: 40ch;
  margin: 0 auto;
  padding-left: 1.25rem;
  color: var(--color-text);
}

.about-points li { margin-bottom: var(--space-xs); }

/* Download */
.download { background: var(--color-white); }

.download p {
  text-align: center;
  margin: 0 0 var(--space-lg);
  color: var(--color-text-muted);
}

.download-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-md);
}

.store-btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  background: var(--color-primary);
  color: var(--color-white);
  transition: background 0.2s;
}

.store-btn:hover:not(.disabled) {
  background: var(--color-primary-dark);
}

.store-btn.disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.download-note {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Contact */
.contact { background: var(--color-surface); }

.contact p {
  text-align: center;
  margin: 0 0 var(--space-md);
  color: var(--color-text-muted);
}

.contact-list {
  max-width: 28rem;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.contact-list li {
  margin-bottom: var(--space-sm);
}

.contact-list a {
  color: var(--color-primary);
  text-decoration: none;
}

.contact-list a:hover {
  text-decoration: underline;
}

/* Footer */
.site-footer {
  padding: var(--space-xl) var(--space-md);
  background: var(--color-primary-dark);
  color: var(--color-white);
  text-align: center;
}

.footer-brand {
  margin: 0 0 var(--space-xs);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
}

.footer-tagline {
  margin: 0 0 var(--space-md);
  font-size: 0.9375rem;
  opacity: 0.9;
}

.footer-legal {
  margin: 0;
  font-size: 0.875rem;
  opacity: 0.8;
}