:root {
  /* --- color --- */
  --hmlw-bg: #ffffff;
  --hmlw-bg-secondary: #f5f5f7;
  --hmlw-bg-semitransparent: #00000022;
  --hmlw-card: #ffffff;
  --hmlw-text-primary: #1d1d1f;
  --hmlw-text-secondary: #86868b;
  --hmlw-accent: #000000;
  --hmlw-border: #d2d2d7;

  /* --- font size --- */
  --hmlw-font-size-xs: 0.8125rem;
  --hmlw-font-size-sm: 0.875rem;
  --hmlw-font-size-base: 1rem;
  --hmlw-font-size-md: 1.125rem;
  --hmlw-font-size-lg: 1.5rem;
  --hmlw-font-size-xl: 2rem;
  --hmlw-font-size-huge: 3rem;

  --hmlw-font-weight-reg: 400;
  --hmlw-font-weight-bold: 600;

  --hmlw-line-height: 1.6;

  /* --- spacing and texture --- */
  --hmlw-radius-md: 0.75rem;
  --hmlw-radius-xl: 2rem;
  --hmlw-radius-round: 100vmax;
  --hmlw-header-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.05);
  --hmlw-blur: blur(20px);
  --hmlw-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- basic --- */
body {
  margin: 0;
  background: var(--hmlw-bg-secondary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--hmlw-text-primary);
  font-size: var(--hmlw-font-size-base);
  line-height: var(--hmlw-line-height);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* --- text --- */
.text-xs {
  font-size: var(--hmlw-font-size-xs);
}

.text-sm {
  font-size: var(--hmlw-font-size-sm);
}

.text-base {
  font-size: var(--hmlw-font-size-base);
}

.text-md {
  font-size: var(--hmlw-font-size-md);
}

.text-lg {
  font-size: var(--hmlw-font-size-lg);
}

.text-xl {
  font-size: var(--hmlw-font-size-xl);
}

.text-primary {
  color: var(--hmlw-text-primary);
}

.text-secondary {
  color: var(--hmlw-text-secondary);
}

.text-bold {
  font-weight: var(--hmlw-font-weight-bold);
}

/* --- components --- */
.hmlw-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.75);
  -webkit-backdrop-filter: var(--hmlw-blur);
  backdrop-filter: var(--hmlw-blur);
  height: 4rem;
}

.hmlw-footer {
  background: var(--hmlw-bg);
  padding: 3rem 1.5rem;
  margin-top: auto;
}

.hmlw-container {
  max-width: 120rem;
  margin: 0 auto;
  /* width: 100%; */
}

.hmlw-card {
  background: var(--hmlw-card);
  border-radius: var(--hmlw-radius-md);
  padding: 1.25rem;
  box-shadow: var(--hmlw-header-shadow);
}

.hmlw-grid-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.hmlw-nav-card {
  background: var(--hmlw-card);
  border-radius: var(--hmlw-radius-md);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.03);
  transition: var(--hmlw-transition);
}

.hmlw-nav-card:hover {
  transform: translateY(-0.25rem);
  box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.06);
}

.hmlw-nav-card-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: var(--hmlw-accent);
}

.hmlw-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--hmlw-border);
  border-radius: var(--hmlw-radius-round);
  font-size: var(--hmlw-font-size-base);
  background: var(--hmlw-bg);
  transition: var(--hmlw-transition);
  outline: none;
}

.hmlw-input:focus {
  border-color: var(--hmlw-accent);
  box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.05);
}

.hmlw-btn {
  width: auto;
  padding: 0.75rem 1rem;
  min-width: 5rem;
  background: var(--hmlw-accent);
  color: #fff;
  border: none;
  border-radius: var(--hmlw-radius-md);
  font-weight: var(--hmlw-font-weight-bold);
  cursor: pointer;
  transition: var(--hmlw-transition);
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
}

.hmlw-btn:hover {
  opacity: 0.8;
}

.hmlw-btn:disabled {
  background: var(--hmlw-text-secondary);
  cursor: not-allowed;
}

.hmlw-tag-device {
  font-size: var(--hmlw-font-size-xs);
  background: var(--hmlw-bg-secondary);
  color: var(--hmlw-text-secondary);
  padding: 0.5rem 0.75rem;
  border-radius: var(--hmlw-radius-round);
  line-height: 1;
}