/* ============================================================
   recipe-detail.css — KidneyFoods Recipe Detail Page
   Design tokens, mobile-first, production quality
   ============================================================ */

/* ─── Design tokens (Nest aesthetic — white base) ───────── */
:root {
  --rd-bg:          #FFFFFF;        /* WHITE base */
  --rd-paper:       #FFFFFF;
  --rd-ink:         #1A1A1A;
  --rd-ink-soft:    #5C5C5C;
  --rd-ink-muted:   #9A9A9A;
  --rd-accent:      #3F6B5A;
  --rd-accent-lt:   #E8F0EB;
  --rd-border:      #EFEFEF;

  /* nutrient theme colours */
  --rd-phos:        #EA7A2E;
  --rd-phos-lt:     #FEF3EB;
  --rd-sod:         #3B7DD8;
  --rd-sod-lt:      #EBF2FD;
  --rd-pot:         #7C4DB8;
  --rd-pot-lt:      #F3EDFB;
  --rd-cal:         #6B7C78;
  --rd-cal-lt:      #F0EFED;

  /* rating colours */
  --rd-safe:        #4A7C59;
  --rd-safe-lt:     #E8F4EB;
  --rd-moderate:    #C77A2C;
  --rd-moderate-lt: #FBF1E0;
  --rd-limit:       #D55F2E;
  --rd-limit-lt:    #FDEDE3;
  --rd-avoid:       #B5453B;
  --rd-avoid-lt:    #FBE8E5;

  /* layout */
  --rd-radius:      12px;
  --rd-radius-sm:   8px;
  --rd-shadow:      0 2px 12px rgba(31,42,36,.07);
  --rd-shadow-md:   0 4px 24px rgba(31,42,36,.1);
  --rd-max-w:       1400px;
  --rd-gap:         24px;
}

/* ─── Base ───────────────────────────────────────────────── */
.rdetail {
  background: var(--rd-bg);
  min-height: 100vh;
  padding-bottom: 80px;
}

/* ─── Breadcrumb ─────────────────────────────────────────── */
.rd-breadcrumb {
  max-width: var(--rd-max-w);
  margin: 0 auto;
  padding: 16px 20px 0;
  font-size: 13px;
  color: var(--rd-ink-muted);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  line-height: 1.4;
}

.rd-breadcrumb a {
  color: var(--rd-accent);
  text-decoration: none;
  font-weight: 500;
  transition: color .15s;
}
.rd-breadcrumb a:hover { color: var(--rd-ink); }

.rd-bc-sep {
  color: var(--rd-border);
  margin: 0 2px;
}

.rd-breadcrumb [aria-current="page"] {
  color: var(--rd-ink-soft);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 200px;
}

/* ─── Hero ───────────────────────────────────────────────── */
.rd-hero {
  width: 100%;
  margin-top: 16px;
}

.rd-hero-image {
  position: relative;
  width: 100%;
  max-height: 480px;
  overflow: hidden;
  background: #D5CFC2;
}

.rd-hero-image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  display: block;
  transition: transform .4s ease;
}

@media (min-width: 768px) {
  .rd-hero-image img { height: 480px; }
}

.rd-hero-image:hover img { transform: scale(1.02); }

/* gradient overlay at the bottom */
.rd-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(31,42,36,.65) 0%, transparent 55%);
  display: flex;
  align-items: flex-end;
  padding: 24px;
}

/* Rating badges */
.rd-hero-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .02em;
  text-transform: uppercase;
  backdrop-filter: blur(6px);
}

.rd-badge-safe     { background: rgba(74,124,89,.85);  color: #fff; }
.rd-badge-moderate { background: rgba(199,122,44,.85); color: #fff; }
.rd-badge-limit    { background: rgba(213,95,46,.85);  color: #fff; }
.rd-badge-avoid    { background: rgba(181,69,59,.85);  color: #fff; }

/* ─── Container ──────────────────────────────────────────── */
.rd-container {
  max-width: var(--rd-max-w);
  margin: 0 auto;
  padding: 0 20px;
}

/* ─── Header block ───────────────────────────────────────── */
.rd-header {
  background: var(--rd-paper);
  border-radius: var(--rd-radius);
  padding: 28px 24px 24px;
  margin-top: 24px;
  box-shadow: var(--rd-shadow);
}

.rd-cuisine-line {
  font-size: 13px;
  font-weight: 600;
  color: var(--rd-ink-soft);
  letter-spacing: .02em;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.rd-title {
  font-size: clamp(22px, 4vw, 34px);
  font-weight: 800;
  color: var(--rd-ink);
  line-height: 1.2;
  margin: 0 0 12px;
  letter-spacing: -.01em;
}

.rd-description {
  font-size: 15px;
  color: var(--rd-ink-soft);
  line-height: 1.65;
  margin: 0 0 24px;
  max-width: 72ch;
}

/* Meta row */
.rd-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.rd-meta-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  flex: 1 1 90px;
  min-width: 90px;
  max-width: 140px;
  background: var(--rd-bg);
  border: 1px solid var(--rd-border);
  border-radius: var(--rd-radius-sm);
  padding: 12px 10px 10px;
  text-align: center;
}

.rd-meta-icon { color: var(--rd-ink-soft); flex-shrink: 0; }

.rd-meta-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--rd-ink-muted);
}

.rd-meta-item strong {
  font-size: 15px;
  font-weight: 700;
  color: var(--rd-ink);
}

/* Rating variant */
.rd-meta-rating { position: relative; }

.rd-rating-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: block;
}

.rd-meta-safe     .rd-rating-dot { background: var(--rd-safe); }
.rd-meta-moderate .rd-rating-dot { background: var(--rd-moderate); }
.rd-meta-limit    .rd-rating-dot { background: var(--rd-limit); }
.rd-meta-avoid    .rd-rating-dot { background: var(--rd-avoid); }

.rd-meta-safe     strong { color: var(--rd-safe); }
.rd-meta-moderate strong { color: var(--rd-moderate); }
.rd-meta-limit    strong { color: var(--rd-limit); }
.rd-meta-avoid    strong { color: var(--rd-avoid); }

/* ─── Section title ──────────────────────────────────────── */
.rd-section-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--rd-ink);
  margin: 0 0 16px;
  letter-spacing: -.01em;
}

/* ─── Nutrition panel ────────────────────────────────────── */
.rd-nutrition {
  background: var(--rd-paper);
  border-radius: var(--rd-radius);
  padding: 24px;
  margin-top: 20px;
  box-shadow: var(--rd-shadow);
}

.rd-nut-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

@media (min-width: 560px) {
  .rd-nut-grid { grid-template-columns: repeat(4, 1fr); }
}

.rd-nut-card {
  border-radius: var(--rd-radius-sm);
  padding: 16px 14px 14px;
  text-align: center;
  border-top: 3px solid transparent;
  background: var(--rd-bg);
}

.rd-nut-cal  { border-color: var(--rd-cal);  background: var(--rd-cal-lt);  }
.rd-nut-phos { border-color: var(--rd-phos); background: var(--rd-phos-lt); }
.rd-nut-sod  { border-color: var(--rd-sod);  background: var(--rd-sod-lt);  }
.rd-nut-pot  { border-color: var(--rd-pot);  background: var(--rd-pot-lt);  }

.rd-nut-val {
  font-size: 26px;
  font-weight: 800;
  color: var(--rd-ink);
  line-height: 1;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
}

.rd-nut-unit {
  font-size: 13px;
  font-weight: 600;
  color: var(--rd-ink-soft);
}

.rd-nut-key {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--rd-ink-soft);
  margin-top: 6px;
}

.rd-nut-pct {
  font-size: 10px;
  color: var(--rd-ink-muted);
  margin-top: 4px;
  line-height: 1.3;
}

/* ─── CKD Tip ────────────────────────────────────────────── */
.rd-tip {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: #fffbeb;
  border: 1px solid #f59e0b;
  border-left: 4px solid #f59e0b;
  border-radius: var(--rd-radius-sm);
  padding: 18px 20px;
  margin-top: 20px;
}

.rd-tip-icon {
  font-size: 22px;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.rd-tip-body strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: #92400e;
  margin-bottom: 4px;
}

.rd-tip-body p {
  margin: 0;
  font-size: 14px;
  color: #78350f;
  line-height: 1.6;
}

/* ─── Two-column content ─────────────────────────────────── */
.rd-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 20px;
}

@media (min-width: 720px) {
  .rd-content {
    grid-template-columns: 1fr 1.4fr;
    align-items: start;
  }
}

/* ─── Ingredients ────────────────────────────────────────── */
.rd-ingredients {
  background: var(--rd-paper);
  border-radius: var(--rd-radius);
  padding: 24px;
  box-shadow: var(--rd-shadow);
}

.rd-ing-list {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.rd-ing-item { border-radius: 6px; transition: background .15s; }
.rd-ing-item:hover { background: var(--rd-accent-lt); }

.rd-ing-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 10px 10px 4px;
  cursor: pointer;
  user-select: none;
  border-radius: 6px;
}

/* Hidden native checkbox — keyboard / screen-reader accessible */
.rd-ing-check {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

/* Visual checkbox box (span) */
.rd-ing-box {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  min-width: 20px;
  border: 2px solid var(--rd-border);
  border-radius: 5px;
  margin-top: 1px;
  background: #fff;
  cursor: pointer;
  transition: background .15s, border-color .15s, transform .1s;
}

.rd-ing-tick {
  opacity: 0;
  transform: scale(0.5);
  transition: opacity .15s, transform .15s;
}

/* Checked state via JS class on label */
.rd-ing-done .rd-ing-box {
  background: var(--rd-accent);
  border-color: var(--rd-accent);
  transform: scale(1.05);
}

.rd-ing-done .rd-ing-tick {
  opacity: 1;
  transform: scale(1);
}

/* Focus ring on the box when input is keyboard-focused */
.rd-ing-check:focus-visible + .rd-ing-box {
  outline: 2px solid var(--rd-accent);
  outline-offset: 2px;
}

.rd-ing-text {
  font-size: 14px;
  color: var(--rd-ink);
  line-height: 1.5;
  transition: color .2s, text-decoration .2s;
}

.rd-ing-done .rd-ing-text {
  color: var(--rd-ink-muted);
  text-decoration: line-through;
  text-decoration-color: var(--rd-ink-muted);
}

/* Tags */
.rd-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 4px;
}

.rd-tag {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  background: var(--rd-accent-lt);
  color: var(--rd-accent);
  border: 1px solid rgba(63,107,90,.18);
  border-radius: 100px;
  padding: 4px 10px;
}

/* ─── Steps ──────────────────────────────────────────────── */
.rd-steps {
  background: var(--rd-paper);
  border-radius: var(--rd-radius);
  padding: 24px;
  box-shadow: var(--rd-shadow);
}

.rd-step-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
  counter-reset: step-counter;
}

.rd-step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.rd-step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  min-width: 34px;
  border-radius: 50%;
  background: var(--rd-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  flex-shrink: 0;
  margin-top: 2px;
  box-shadow: 0 2px 8px rgba(63,107,90,.3);
}

.rd-step p {
  margin: 0;
  font-size: 14px;
  color: var(--rd-ink);
  line-height: 1.65;
  padding-top: 6px;
}

/* ─── Calculator CTA ─────────────────────────────────────── */
.rd-calc-cta {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
  background: var(--rd-accent);
  border-radius: var(--rd-radius);
  padding: 28px 24px;
  margin-top: 20px;
  box-shadow: 0 4px 20px rgba(63,107,90,.25);
}

@media (min-width: 600px) {
  .rd-calc-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.rd-calc-cta-text h3 {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  margin: 0 0 6px;
}

.rd-calc-cta-text p {
  font-size: 14px;
  color: rgba(255,255,255,.82);
  margin: 0;
  line-height: 1.5;
  max-width: 52ch;
}

.rd-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--rd-accent);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 8px;
  padding: 12px 22px;
  transition: background .15s, box-shadow .15s, transform .1s;
  white-space: nowrap;
  flex-shrink: 0;
}

.rd-btn-primary:hover {
  background: #f0f9f4;
  box-shadow: 0 4px 12px rgba(0,0,0,.12);
  transform: translateY(-1px);
}

.rd-btn-primary:active { transform: none; }

/* ─── Related recipes ────────────────────────────────────── */
.rd-related {
  margin-top: 32px;
}

.rd-related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

@media (min-width: 480px) {
  .rd-related-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    overflow-x: visible;
  }
}

@media (min-width: 900px) {
  .rd-related-grid { grid-template-columns: repeat(3, 1fr); }
}

.rd-rel-card {
  display: flex;
  flex-direction: column;
  background: var(--rd-paper);
  border-radius: var(--rd-radius);
  overflow: hidden;
  text-decoration: none;
  box-shadow: var(--rd-shadow);
  border: 1px solid var(--rd-border);
  transition: box-shadow .2s, transform .15s;
}

.rd-rel-card:hover {
  box-shadow: var(--rd-shadow-md);
  transform: translateY(-2px);
}

.rd-rel-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: #D5CFC2;
}

.rd-rel-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .35s;
}

.rd-rel-card:hover .rd-rel-img-wrap img { transform: scale(1.05); }

.rd-rel-fallback {
  width: 100%;
  height: 100%;
  font-size: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--rd-accent-lt);
}

.rd-rel-badge {
  position: absolute;
  bottom: 8px;
  left: 8px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  border-radius: 100px;
  padding: 3px 9px;
}

.rd-rel-body {
  padding: 14px 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rd-rel-meta {
  font-size: 11px;
  color: var(--rd-ink-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .03em;
}

.rd-rel-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--rd-ink);
  line-height: 1.35;
}

.rd-rel-nutrients {
  display: flex;
  gap: 10px;
  margin-top: 4px;
}

.rd-rel-nutrients span {
  font-size: 11px;
  color: var(--rd-ink-muted);
}

.rd-rel-nutrients strong { color: var(--rd-ink-soft); }

/* ─── Back link ──────────────────────────────────────────── */
.rd-back {
  margin-top: 32px;
  padding-bottom: 8px;
}

.rd-back a {
  font-size: 14px;
  font-weight: 600;
  color: var(--rd-accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color .15s, gap .15s;
}

.rd-back a:hover {
  color: var(--rd-ink);
  gap: 10px;
}

/* ─── Responsive refinements ─────────────────────────────── */
@media (max-width: 479px) {
  .rd-container { padding: 0 14px; }
  .rd-header { padding: 20px 16px; }
  .rd-ingredients,
  .rd-steps,
  .rd-nutrition { padding: 18px 14px; }
  .rd-meta-row { gap: 8px; }
  .rd-meta-item { padding: 10px 6px 8px; min-width: 78px; }
  .rd-calc-cta { padding: 20px 16px; }
  .rd-nut-val { font-size: 22px; }
}

@media (min-width: 900px) {
  .rd-container { padding: 0 32px; }
}

/* ─── Print ──────────────────────────────────────────────── */
@media print {
  .rd-hero-image img { max-height: 240px; }
  .rd-calc-cta,
  .rd-related,
  .rd-back { display: none; }
  .rd-content { grid-template-columns: 1fr 1fr; }
  .rd-tip { break-inside: avoid; }
}