@import 'tokens.css';

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-roobert);
  font-size: var(--text-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--leading-body);
  color: var(--color-midnight-graphite);
  background-color: var(--color-vapor-white);
  -webkit-font-smoothing: antialiased;
}

/* ── Nav ── */

.nav {
  height: var(--nav-height);
  border-bottom: 1px solid var(--color-concrete-mist);
  background: var(--color-vapor-white);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav__inner {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-24);
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--spacing-16);
}

.nav__logo {
  font-family: var(--font-roobert);
  font-size: var(--text-body);
  font-weight: var(--font-weight-regular);
  color: var(--color-midnight-graphite);
  text-decoration: none;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}

.nav__logo span {
  color: var(--color-deep-moss);
}

/* ── Nav search ── */

.nav__search {
  flex: 1;
  position: relative;
  max-width: 480px;
}

.nav__search-input {
  width: 100%;
  height: 36px;
  padding: var(--spacing-8) var(--spacing-16) var(--spacing-8) 40px;
  border: 1px solid var(--color-concrete-mist);
  border-radius: var(--radius-inputs);
  background: transparent;
  font-family: var(--font-roobert);
  font-size: var(--text-body);
  font-weight: var(--font-weight-regular);
  color: var(--color-midnight-graphite);
  outline: none;
  transition: border-color var(--transition-fast);
}

.nav__search-input::placeholder {
  color: var(--color-concrete-mist);
}

.nav__search-input:focus {
  border-color: var(--color-midnight-graphite);
}

.nav__search-icon {
  position: absolute;
  left: var(--spacing-12);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-concrete-mist);
  pointer-events: none;
  width: 16px;
  height: 16px;
}

.search-results {
  position: absolute;
  top: calc(100% + var(--spacing-4));
  left: 0;
  right: 0;
  background: var(--color-vapor-white);
  border: 1px solid var(--color-concrete-mist);
  border-radius: var(--radius-cards);
  overflow: hidden;
  z-index: 100;
}

.search-results:empty {
  display: none;
}

/* ── Nav actions ── */

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
  flex-shrink: 0;
  margin-left: auto;
}

/* Ghost nav button */
.btn-ghost-nav {
  display: inline-flex;
  align-items: center;
  background: transparent;
  border: none;
  border-radius: var(--radius-buttons);
  font-family: var(--font-roobert);
  font-size: var(--text-body);
  font-weight: var(--font-weight-regular);
  color: var(--color-midnight-graphite);
  padding: 0 var(--spacing-16);
  height: 36px;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-fast);
}

.btn-ghost-nav:hover {
  background: var(--color-cloud-gray);
}

/* Primary action button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-8);
  background: var(--color-sky-blue);
  border: none;
  border-radius: var(--radius-buttons);
  font-family: var(--font-roobert);
  font-size: var(--text-body);
  font-weight: var(--font-weight-regular);
  color: var(--color-midnight-graphite);
  padding: var(--spacing-4) var(--spacing-20);
  cursor: pointer;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.btn-primary:hover {
  opacity: 0.85;
}

/* Nav link (square corners, inline) */
.btn-nav-link {
  display: inline-flex;
  align-items: center;
  background: transparent;
  border: none;
  border-radius: 0;
  font-family: var(--font-roobert);
  font-size: var(--text-body);
  font-weight: var(--font-weight-regular);
  color: var(--color-midnight-graphite);
  padding: 0;
  cursor: pointer;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.btn-nav-link:hover {
  opacity: 0.6;
}

/* ── Main layout ── */

.main {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: var(--spacing-72) var(--spacing-24);
}

/* ── Breadcrumb ── */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  color: var(--color-concrete-mist);
  margin-bottom: var(--spacing-32);
  flex-wrap: wrap;
}

.breadcrumb__link {
  color: var(--color-midnight-graphite);
  text-decoration: none;
  opacity: 0.5;
  transition: opacity var(--transition-fast);
}

.breadcrumb__link:hover {
  opacity: 1;
}

.breadcrumb__sep {
  opacity: 0.3;
}

.breadcrumb__current {
  color: var(--color-midnight-graphite);
}

/* ── Card grid ── */

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--section-gap);
}

@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .card-grid { grid-template-columns: 1fr; }
}

/* ── Neutral card (white bg, no border, 32px padding) ── */

.card {
  background: var(--color-vapor-white);
  border-radius: var(--radius-cards);
  padding: var(--spacing-32);
}

/* ── Bordered category cards ── */

.category-card {
  display: block;
  background: transparent;
  border-radius: var(--radius-cards);
  border: 1px solid var(--color-concrete-mist);
  padding: var(--spacing-24);
  text-decoration: none;
  transition: border-color var(--transition-fast);
  cursor: pointer;
}

.category-card:hover {
  border-color: var(--color-midnight-graphite);
}

/* Color variants — one per top-level group */
.category-card--plant:hover    { border-color: var(--color-deep-moss); }
.category-card--animal:hover   { border-color: var(--color-sky-blue); }
.category-card--processed:hover { border-color: var(--color-goldenrod-glint); }

.category-card--plant.category-card--active    { border-color: var(--color-deep-moss); }
.category-card--animal.category-card--active   { border-color: var(--color-sky-blue); }
.category-card--processed.category-card--active { border-color: var(--color-goldenrod-glint); }

.category-card__name {
  font-size: var(--text-subheading);
  line-height: var(--leading-subheading);
  color: var(--color-midnight-graphite);
  margin-bottom: var(--spacing-4);
}

.category-card__meta {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  color: var(--color-midnight-graphite);
  opacity: 0.5;
}

/* ── Food card ── */

.food-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-16) var(--spacing-20);
  border: 1px solid var(--color-concrete-mist);
  border-radius: var(--radius-cards);
  background: var(--color-vapor-white);
  text-decoration: none;
  transition: border-color var(--transition-fast);
}

.food-card:hover {
  border-color: var(--color-midnight-graphite);
}

.food-card__name {
  font-size: var(--text-body);
  color: var(--color-midnight-graphite);
}

.food-card__kcal {
  font-size: var(--text-caption);
  color: var(--color-midnight-graphite);
  opacity: 0.5;
  white-space: nowrap;
  margin-left: var(--spacing-16);
}

/* ── Form inputs ── */

.input {
  width: 100%;
  background: transparent;
  border: 1px solid var(--color-concrete-mist);
  border-radius: var(--radius-inputs);
  font-family: var(--font-roobert);
  font-size: var(--text-body);
  font-weight: var(--font-weight-regular);
  color: var(--color-midnight-graphite);
  padding: var(--spacing-8) var(--spacing-16);
  outline: none;
  transition: border-color var(--transition-fast);
}

.input:focus {
  border-color: var(--color-midnight-graphite);
}

/* ── Score badge ── */

.score-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-8);
  border-radius: var(--radius-cards);
  border: 1px solid;
  padding: var(--spacing-4) var(--spacing-12);
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
}

.score-badge__value {
  font-size: var(--text-subheading);
  line-height: 1;
}

.score-badge--good {
  border-color: var(--color-deep-moss);
  color: var(--color-deep-moss);
  background: var(--color-score-good-bg);
}

.score-badge--moderate {
  border-color: var(--color-goldenrod-glint);
  color: var(--color-score-moderate);
  background: var(--color-score-moderate-bg);
}

.score-badge--poor {
  border-color: var(--color-dark-plum);
  color: var(--color-dark-plum);
  background: var(--color-score-poor-bg);
}

/* ── Section dividers ── */

.section-alt {
  background: var(--color-cloud-gray);
  margin-left: calc(-1 * var(--spacing-24));
  margin-right: calc(-1 * var(--spacing-24));
  padding: var(--spacing-72) var(--spacing-24);
}

/* ── Typography helpers ── */

.display {
  font-size: var(--text-display);
  line-height: var(--leading-display);
  color: var(--color-midnight-graphite);
  letter-spacing: -0.02em;
}

.heading {
  font-size: var(--text-heading);
  line-height: var(--leading-heading);
  color: var(--color-midnight-graphite);
  letter-spacing: -0.01em;
}

.heading-lg {
  font-size: var(--text-heading-lg);
  line-height: var(--leading-heading-lg);
  color: var(--color-midnight-graphite);
  letter-spacing: -0.01em;
}

.subheading {
  font-size: var(--text-subheading);
  line-height: var(--leading-subheading);
  color: var(--color-midnight-graphite);
}

.body-text {
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-midnight-graphite);
}

.caption {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  color: var(--color-midnight-graphite);
  opacity: 0.5;
}

.label {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  color: var(--color-midnight-graphite);
  opacity: 0.5;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ── Utilities ── */

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

/* ── Responsive: Tablet (≤ 1024px) ── */

@media (max-width: 1024px) {
  .main {
    padding-top: var(--spacing-48);
    padding-bottom: var(--spacing-48);
  }

  .section-alt {
    padding-top: var(--spacing-48);
    padding-bottom: var(--spacing-48);
  }
}

/* ── Responsive: Mobile (≤ 640px) ── */

@media (max-width: 640px) {
  .nav__inner {
    padding: 0 var(--spacing-16);
    gap: var(--spacing-8);
  }

  .nav__search {
    max-width: none;
  }

  /* Sign-up button hidden on mobile — nav is too narrow */
  .nav__actions .btn-primary {
    display: none;
  }

  .main {
    padding: var(--spacing-32) var(--spacing-16);
  }

  .section-alt {
    margin-left: calc(-1 * var(--spacing-16));
    margin-right: calc(-1 * var(--spacing-16));
    padding: var(--spacing-48) var(--spacing-16);
  }

  .breadcrumb {
    margin-bottom: var(--spacing-20);
  }
}