/* ==========================================================================
   SaferHomeForMom — Global Stylesheet
   A room-by-room safety guide for aging parents
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens (Custom Properties)
   -------------------------------------------------------------------------- */

:root {
  /* Brand palette */
  --clr-navy:       #1e3a5f;
  --clr-teal:       #0f6e56;
  --clr-amber:      #ba7517;
  --clr-cream:      #faf9f6;
  --clr-white:      #ffffff;
  --clr-gray-light: #f1efe8;
  --clr-gray-mid:   #888780;
  --clr-red-soft:   #a32d2d;
  --clr-border:     #e0ddd6;

  /* Derived / functional */
  --clr-teal-hover: #0b5a46;
  --clr-navy-dark:  #152c48;

  /* Typography */
  --font-stack: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing scale */
  --sp-xs:  0.25rem;
  --sp-sm:  0.5rem;
  --sp-md:  1rem;
  --sp-lg:  1.5rem;
  --sp-xl:  2rem;
  --sp-2xl: 3rem;
  --sp-3xl: 4rem;

  /* Misc */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
  --transition: 0.2s ease;
}

/* --------------------------------------------------------------------------
   2. Reset & Base
   -------------------------------------------------------------------------- */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 4.5rem; /* offset for sticky nav */
}

body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.7;
  color: var(--clr-navy);
  background-color: var(--clr-cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:hover,
a:focus-visible {
  color: var(--clr-teal-hover);
  text-decoration: underline;
}

ul, ol {
  list-style: none;
}

/* --------------------------------------------------------------------------
   3. Typography
   -------------------------------------------------------------------------- */

h1, h2, h3, h4 {
  line-height: 1.3;
  color: var(--clr-navy);
}

h1 {
  font-size: 2.2rem;
  font-weight: 600;
}

h2 {
  font-size: 1.6rem;
  font-weight: 500;
}

h3 {
  font-size: 1.2rem;
  font-weight: 500;
}

h4 {
  font-size: 1rem;
  font-weight: 600;
}

p + p {
  margin-top: var(--sp-md);
}

small {
  font-size: 0.875rem;
  color: var(--clr-gray-mid);
}

/* --------------------------------------------------------------------------
   4. Layout / Container
   -------------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--sp-lg);
  padding-right: var(--sp-lg);
}

section {
  padding-top: var(--sp-2xl);
  padding-bottom: var(--sp-2xl);
}

.section-alt {
  background-color: var(--clr-gray-light);
}

/* --------------------------------------------------------------------------
   5. Navigation
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--clr-navy);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.5rem;
}

.nav__logo {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--clr-white);
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.nav__logo img {
  background: var(--clr-white);
  padding: 3px;
  border-radius: 6px;
  box-sizing: content-box;
  display: inline-block;
}

.nav__logo:hover,
.nav__logo:focus-visible {
  color: var(--clr-white);
  text-decoration: none;
  opacity: 0.9;
}

/* Hamburger toggle (CSS-only via hidden checkbox) */
.nav__toggle {
  display: none; /* hidden checkbox */
}

.nav__toggle-label {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  cursor: pointer;
}

.nav__toggle-label span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--clr-white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* Hamburger animation on toggle */
.nav__toggle:checked ~ .nav__toggle-label span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle:checked ~ .nav__toggle-label span:nth-child(2) {
  opacity: 0;
}

.nav__toggle:checked ~ .nav__toggle-label span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Nav links — mobile default: hidden */
.nav__links {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 3.5rem;
  left: 0;
  right: 0;
  background-color: var(--clr-navy);
  padding: var(--sp-md) 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.nav__toggle:checked ~ .nav__links {
  display: flex;
}

.nav__links a {
  display: block;
  padding: var(--sp-sm) var(--sp-lg);
  color: var(--clr-white);
  font-size: 0.95rem;
  text-decoration: none;
  transition: background-color var(--transition);
}

.nav__links a:hover,
.nav__links a:focus-visible {
  background-color: var(--clr-navy-dark);
  text-decoration: none;
  color: var(--clr-white);
}

.nav__links a.nav__cta {
  color: var(--clr-amber);
  font-weight: 500;
}

/* Desktop nav */
@media (min-width: 768px) {
  .nav__toggle-label {
    display: none;
  }

  .nav__links {
    display: flex;
    flex-direction: row;
    position: static;
    padding: 0;
    box-shadow: none;
    gap: var(--sp-xs);
  }

  .nav__links a {
    padding: var(--sp-sm) var(--sp-md);
    border-radius: var(--radius-sm);
  }
}

/* --------------------------------------------------------------------------
   6. Hero Section
   -------------------------------------------------------------------------- */

.hero {
  background: linear-gradient(135deg, var(--clr-navy) 0%, var(--clr-navy-dark) 100%);
  color: var(--clr-white);
  text-align: center;
  padding: var(--sp-3xl) var(--sp-lg);
}

.hero h1 {
  color: var(--clr-white);
  margin-bottom: var(--sp-md);
  font-size: 2.2rem;
}

.hero p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.1rem;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.hero .btn {
  margin-top: var(--sp-xl);
}

@media (min-width: 768px) {
  .hero {
    padding: var(--sp-3xl) var(--sp-lg) calc(var(--sp-3xl) + 1rem);
  }

  .hero h1 {
    font-size: 2.8rem;
  }

  .hero p {
    font-size: 1.2rem;
  }
}

/* --------------------------------------------------------------------------
   7. Buttons
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 0.65rem 1.4rem;
  font-family: var(--font-stack);
  font-size: 0.95rem;
  font-weight: 500;
  border: 2px solid transparent;
  border-radius: var(--radius-pill);
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition), color var(--transition),
              border-color var(--transition), box-shadow var(--transition);
  line-height: 1.4;
}

.btn:focus-visible {
  outline: 2px solid var(--clr-teal);
  outline-offset: 2px;
}

/* Primary */
.btn-primary {
  background-color: var(--clr-teal);
  color: var(--clr-white);
  border-color: var(--clr-teal);
}

.btn-primary:hover {
  background-color: var(--clr-teal-hover);
  border-color: var(--clr-teal-hover);
  color: var(--clr-white);
  text-decoration: none;
}

/* Secondary (outlined) */
.btn-secondary {
  background-color: transparent;
  color: var(--clr-teal);
  border-color: var(--clr-teal);
}

.btn-secondary:hover {
  background-color: var(--clr-teal);
  color: var(--clr-white);
  text-decoration: none;
}

/* Small variant */
.btn-sm {
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
}

/* Amber / CTA variant */
.btn-amber {
  background-color: var(--clr-amber);
  color: var(--clr-white);
  border-color: var(--clr-amber);
}

.btn-amber:hover {
  background-color: #a56813;
  border-color: #a56813;
  color: var(--clr-white);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   8. Cards (generic)
   -------------------------------------------------------------------------- */

.card {
  background-color: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: var(--sp-lg);
  transition: box-shadow var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

/* --------------------------------------------------------------------------
   9. Product Cards
   -------------------------------------------------------------------------- */

.product-card {
  background-color: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: var(--sp-lg);
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.product-card:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.product-card__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background-color: var(--clr-gray-light);
}

.product-card__title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--clr-navy);
}

.product-card__price {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--clr-teal);
}

.product-card__price small {
  font-weight: 400;
  color: var(--clr-gray-mid);
  font-size: 0.85rem;
}

.product-card__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  flex-wrap: wrap;
}

.product-card__link {
  margin-top: auto;
  padding-top: var(--sp-sm);
}

/* --------------------------------------------------------------------------
   10. Priority Badges
   -------------------------------------------------------------------------- */

.badge {
  display: inline-block;
  padding: 0.2em 0.75em;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.badge-critical {
  color: var(--clr-red-soft);
  background-color: #fcebeb;
}

.badge-recommended {
  color: var(--clr-teal);
  background-color: #e1f5ee;
}

.badge-nice {
  color: var(--clr-gray-mid);
  background-color: #f1efe8;
}

/* --------------------------------------------------------------------------
   11. Star Rating Display
   -------------------------------------------------------------------------- */

.stars {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.stars svg {
  width: 16px;
  height: 16px;
  fill: var(--clr-amber);
}

.stars svg.star-empty {
  fill: var(--clr-border);
}

/* Interactive star-rating widget on the review submission form.
   Override the display defaults so stars start grey/empty until the
   user hovers or selects. The JS controls per-star fill via inline
   `style="fill: ..."` (which beats this rule via specificity). */
#star-input svg {
  width: 28px;
  height: 28px;
  fill: var(--clr-border);
}

.stars__value {
  margin-left: var(--sp-xs);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--clr-navy);
}

.stars__count {
  font-size: 0.8rem;
  color: var(--clr-gray-mid);
}

/* --------------------------------------------------------------------------
   12. Room Tiles
   -------------------------------------------------------------------------- */

.room-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-md);
}

.room-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  padding: var(--sp-xl) var(--sp-md);
  background-color: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.room-tile:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

.room-tile__icon {
  font-size: 2rem;
  line-height: 1;
}

.room-tile__icon svg {
  width: 40px;
  height: 40px;
  fill: var(--clr-teal);
}

.room-tile__label {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--clr-navy);
}

.room-tile--active {
  border-color: var(--clr-teal);
  box-shadow: 0 0 0 2px rgba(15, 110, 86, 0.15);
}

@media (min-width: 768px) {
  .room-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --------------------------------------------------------------------------
   13. Stat Cards & Stats Page
   -------------------------------------------------------------------------- */

.stat-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-md);
}

.stat-card {
  background-color: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: var(--sp-lg);
  text-align: center;
}

.stat-card__number {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--clr-teal);
  line-height: 1.1;
}

.stat-card__label {
  font-size: 0.85rem;
  color: var(--clr-gray-mid);
  margin-top: var(--sp-xs);
}

@media (min-width: 768px) {
  .stat-cards {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* --------------------------------------------------------------------------
   14. Pure CSS Horizontal Bar Charts
   -------------------------------------------------------------------------- */

.bar-chart {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.bar-chart__row {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.bar-chart__label {
  flex: 0 0 120px;
  font-size: 0.85rem;
  text-align: right;
  color: var(--clr-navy);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bar-chart__track {
  flex: 1;
  height: 24px;
  background-color: var(--clr-gray-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.bar-chart__fill {
  height: 100%;
  background-color: var(--clr-teal);
  border-radius: var(--radius-sm);
  transition: width 0.6s ease;
  min-width: 2px;
}

.bar-chart__fill--navy {
  background-color: var(--clr-navy);
}

.bar-chart__fill--amber {
  background-color: var(--clr-amber);
}

.bar-chart__fill--red {
  background-color: var(--clr-red-soft);
}

.bar-chart__value {
  flex: 0 0 50px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--clr-gray-mid);
}

/* --------------------------------------------------------------------------
   15. Sparkline Container
   -------------------------------------------------------------------------- */

.sparkline {
  display: inline-block;
  vertical-align: middle;
}

.sparkline svg {
  display: block;
}

.sparkline__line {
  fill: none;
  stroke: var(--clr-teal);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sparkline__area {
  fill: rgba(15, 110, 86, 0.1);
}

.sparkline__dot {
  fill: var(--clr-teal);
}

/* --------------------------------------------------------------------------
   16. Footer
   -------------------------------------------------------------------------- */

.site-footer {
  background-color: var(--clr-gray-light);
  border-top: 1px solid var(--clr-border);
  padding: var(--sp-xl) 0;
  font-size: 0.875rem;
  color: var(--clr-gray-mid);
}

.site-footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-sm);
  text-align: center;
}

.footer__links {
  display: flex;
  gap: var(--sp-md);
  flex-wrap: wrap;
  justify-content: center;
}

.footer__links a {
  color: var(--clr-gray-mid);
  text-decoration: none;
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--clr-navy);
  text-decoration: underline;
}

.footer__copy {
  color: var(--clr-gray-mid);
}

@media (min-width: 768px) {
  .site-footer .container {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* --------------------------------------------------------------------------
   17. Checklist Styles
   -------------------------------------------------------------------------- */

.checklist {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.checklist__item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-sm);
  padding: var(--sp-sm) var(--sp-md);
  background-color: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
}

.checklist__item input[type="checkbox"] {
  margin-top: 0.35rem;
  accent-color: var(--clr-teal);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.checklist__item label {
  cursor: pointer;
  line-height: 1.5;
}

.checklist__item--done label {
  text-decoration: line-through;
  color: var(--clr-gray-mid);
}

/* --------------------------------------------------------------------------
   18. Tables
   -------------------------------------------------------------------------- */

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  text-align: left;
  padding: var(--sp-sm) var(--sp-md);
  border-bottom: 1px solid var(--clr-border);
}

th {
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--clr-gray-mid);
  background-color: var(--clr-gray-light);
}

tbody tr:hover {
  background-color: rgba(15, 110, 86, 0.03);
}

/* --------------------------------------------------------------------------
   19. Utility Classes
   -------------------------------------------------------------------------- */

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Text alignment */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }

/* Spacing helpers */
.mt-0  { margin-top: 0; }
.mt-sm { margin-top: var(--sp-sm); }
.mt-md { margin-top: var(--sp-md); }
.mt-lg { margin-top: var(--sp-lg); }
.mt-xl { margin-top: var(--sp-xl); }
.mb-0  { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--sp-sm); }
.mb-md { margin-bottom: var(--sp-md); }
.mb-lg { margin-bottom: var(--sp-lg); }
.mb-xl { margin-bottom: var(--sp-xl); }

/* Flex helpers */
.flex       { display: flex; }
.flex-col   { flex-direction: column; }
.flex-wrap  { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--sp-sm); }
.gap-md { gap: var(--sp-md); }
.gap-lg { gap: var(--sp-lg); }

/* Visibility */
.hidden { display: none; }

@media (min-width: 768px) {
  .hidden-desktop { display: none; }
}

@media (max-width: 767px) {
  .hidden-mobile { display: none; }
}

/* --------------------------------------------------------------------------
   20. Accordion / Collapsible
   -------------------------------------------------------------------------- */

.accordion summary {
  cursor: pointer;
  padding: var(--sp-md);
  font-weight: 500;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition);
}

.accordion summary:hover {
  background-color: var(--clr-gray-light);
}

.accordion summary::-webkit-details-marker {
  display: none;
}

.accordion summary::after {
  content: '+';
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--clr-gray-mid);
  transition: transform var(--transition);
}

.accordion[open] summary::after {
  content: '\2212'; /* minus sign */
}

.accordion__body {
  padding: var(--sp-md);
  border: 1px solid var(--clr-border);
  border-top: 0;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

/* --------------------------------------------------------------------------
   21. Alerts / Callouts
   -------------------------------------------------------------------------- */

.callout {
  padding: var(--sp-md) var(--sp-lg);
  border-left: 4px solid var(--clr-teal);
  background-color: #e1f5ee;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: var(--sp-md) 0;
}

.callout--warning {
  border-left-color: var(--clr-amber);
  background-color: #fef6e8;
}

.callout--critical {
  border-left-color: var(--clr-red-soft);
  background-color: #fcebeb;
}

/* --------------------------------------------------------------------------
   22. Print Styles
   -------------------------------------------------------------------------- */

@media print {
  *,
  *::before,
  *::after {
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
  }

  .site-header,
  .site-footer,
  .btn,
  .nav,
  .nav__toggle-label {
    display: none !important;
  }

  .container {
    max-width: 100%;
    padding: 0;
  }

  .hero {
    padding: 1rem 0;
  }

  h1, h2, h3 {
    page-break-after: avoid;
  }

  .checklist {
    display: block;
  }

  .checklist__item {
    border: none;
    padding: 0.25rem 0;
    break-inside: avoid;
  }

  .product-card {
    border: 1px solid #ccc;
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .product-card__title::after {
    content: " — ";
  }

  .product-card__price {
    font-weight: bold;
  }

  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #555 !important;
  }

  .nav__links a[href]::after,
  .footer__links a[href]::after {
    content: none;
  }

  details {
    display: block;
  }

  details[open] .accordion__body,
  .accordion__body {
    display: block;
  }
}

/* --------------------------------------------------------------------------
   23. Steps Grid (How It Works)
   -------------------------------------------------------------------------- */

.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-lg);
}

.steps-grid .card {
  padding: var(--sp-xl) var(--sp-lg);
}

.step-indicator {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--sp-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--clr-teal);
  color: var(--clr-white);
  font-size: 1.3rem;
  font-weight: 700;
  border-radius: 50%;
  line-height: 1;
}

.steps-grid h3 {
  margin-bottom: var(--sp-sm);
}

.steps-grid p {
  color: var(--clr-gray-mid);
  font-size: 0.95rem;
}

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}