/* ════════════════════════════════════════════════════════════
   tools/due-date/style.css — Pregnancy Due Date Calculator
   UI: PREGNANCY JOURNEY — Big arc + 3 trimester cards + week timeline
   Theme: Soft pink/peach + cream
   ════════════════════════════════════════════════════════════ */

body.tool-due-date {
  --page-bg:    #FDF4F2;       /* very soft pink */
  --card-bg:    #FFFFFF;
  --card-soft:  #FCE9E4;
  --ink:        #2D1F1B;
  --text:       #4A3530;
  --muted:      #8A6F68;
  --hairline:   #F0D9D2;

  --pink:       #E96A8C;
  --pink-soft:  #FCE0EA;
  --pink-deep:  #C13A65;

  --peach:      #FF9968;
  --peach-soft: #FFE4D2;

  --mint:       #5CB897;
  --mint-soft:  #D4EEDF;

  --r-card:     28px;
  --r-input:    14px;
  --shadow-soft: 0 1px 2px rgba(180,90,110,.04), 0 12px 36px -20px rgba(180,90,110,.12);

  background: var(--page-bg);
  color: var(--text);
}
body.tool-due-date main.container,
body.tool-due-date .site-header-inner { max-width: 1180px; padding-inline: clamp(16px, 3vw, 28px); }

body.tool-due-date .back-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--muted); font-size: 13.5px;
  text-decoration: none; margin: 20px 0 16px; font-weight: 500;
}
body.tool-due-date .back-link:hover { color: var(--ink); }

.dd-hero { padding: clamp(16px, 3vw, 28px) 4px clamp(16px, 3vw, 24px); max-width: 760px; }
.dd-eyebrow { font-size: 11px; letter-spacing: .2em; font-weight: 600; color: var(--pink); text-transform: uppercase; margin: 0 0 14px; }
.dd-h1 { font-size: clamp(28px, 4.5vw, 44px); line-height: 1.12; font-weight: 700; letter-spacing: -.02em; color: var(--ink); margin: 0 0 14px; }
.dd-h1-accent { color: var(--pink); font-weight: 700; }
.dd-sub { font-size: 16px; color: var(--muted); margin: 0; line-height: 1.55; max-width: 600px; }

/* INPUT */
.dd-input-card {
  background: var(--card-bg); border-radius: var(--r-card);
  padding: clamp(20px, 3vw, 28px) clamp(20px, 3vw, 32px);
  margin-bottom: 16px; box-shadow: var(--shadow-soft);
  display: grid; grid-template-columns: 1fr auto; gap: 18px;
  align-items: end;
}
@media (max-width: 640px) { .dd-input-card { grid-template-columns: 1fr; } }
.dd-field { display: flex; flex-direction: column; gap: 8px; }
.dd-field-label { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; font-weight: 700; color: var(--muted); }
.dd-input-wrap {
  display: flex; align-items: center;
  background: var(--card-soft); border: 1.5px solid var(--hairline);
  border-radius: var(--r-input); padding: 0 18px;
  transition: border-color .15s, background .15s;
}
.dd-input-wrap:focus-within { border-color: var(--pink); background: var(--card-bg); }
.dd-input-wrap input {
  flex: 1; background: transparent; border: 0; padding: 14px 0;
  font-size: 17px; color: var(--ink); font-weight: 600; outline: none; min-width: 0;
}
.dd-seg {
  display: flex; background: var(--card-soft); border-radius: 999px;
  padding: 4px; gap: 2px;
}
.dd-seg input { display: none; }
.dd-seg label {
  flex: 1; text-align: center; padding: 10px 18px; border-radius: 999px;
  font-size: 13px; font-weight: 600; color: var(--muted); cursor: pointer;
  transition: background .15s, color .15s;
}
.dd-seg input:checked + label { background: var(--pink); color: #fff; }

/* HERO ARC — pregnancy progress */
.dd-arc-card {
  background: linear-gradient(160deg, #FFE5EC 0%, #FFD9C7 100%);
  border-radius: var(--r-card);
  padding: clamp(28px, 4vw, 48px);
  margin-bottom: 20px;
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}
.dd-arc-card::before {
  content: ''; position: absolute;
  width: 260px; height: 260px; border-radius: 50%;
  background: rgba(255,255,255,.3);
  top: -100px; right: -100px;
}
.dd-arc-wrap {
  display: flex; flex-direction: column; align-items: center;
  position: relative; z-index: 1;
}
.dd-arc {
  width: 100%; max-width: 460px; height: auto;
}
.dd-arc-bg { fill: none; stroke: rgba(255,255,255,.6); stroke-width: 20; stroke-linecap: round; }
.dd-arc-fg {
  fill: none; stroke: var(--pink-deep); stroke-width: 20;
  stroke-linecap: round; transition: stroke-dashoffset 1.2s ease;
}
.dd-arc-week {
  font-size: clamp(64px, 10vw, 96px);
  font-weight: 800;
  color: var(--ink); line-height: 1;
  letter-spacing: -.04em; margin: -32px 0 4px;
  font-variant-numeric: tabular-nums;
}
.dd-arc-unit {
  font-size: 18px; color: var(--ink); opacity: .65;
  font-weight: 600;
  letter-spacing: .04em;
}
.dd-arc-meta {
  margin-top: 16px;
  display: flex; gap: 24px; flex-wrap: wrap;
  justify-content: center;
}
.dd-arc-stat {
  display: flex; flex-direction: column; align-items: center;
}
.dd-arc-stat-num {
  font-size: 22px; font-weight: 700; color: var(--ink);
  line-height: 1; font-variant-numeric: tabular-nums;
}
.dd-arc-stat-lbl {
  font-size: 11.5px; color: var(--ink); opacity: .6;
  letter-spacing: .1em; text-transform: uppercase;
  font-weight: 600; margin-top: 4px;
}

/* DUE DATE CALLOUT */
.dd-due-card {
  background: var(--card-bg); border-radius: var(--r-card);
  padding: clamp(24px, 3vw, 36px);
  margin-bottom: 20px;
  box-shadow: var(--shadow-soft);
  display: grid; grid-template-columns: 80px 1fr auto; gap: 24px;
  align-items: center;
}
@media (max-width: 640px) { .dd-due-card { grid-template-columns: 1fr; text-align: center; } }
.dd-due-icon {
  width: 80px; height: 80px; border-radius: 24px;
  background: var(--pink-soft);
  display: grid; place-items: center;
  font-size: 38px;
  margin: 0 auto;
}
.dd-due-body { min-width: 0; }
.dd-due-eyebrow {
  font-size: 11px; letter-spacing: .15em;
  text-transform: uppercase; font-weight: 700; color: var(--pink);
  margin: 0 0 6px;
}
.dd-due-date {
  font-size: clamp(22px, 2.8vw, 28px);
  font-weight: 700; color: var(--ink); margin: 0 0 4px;
  letter-spacing: -.01em;
}
.dd-due-countdown { font-size: 14px; color: var(--muted); margin: 0; }
.dd-due-tag {
  background: var(--pink); color: #fff;
  padding: 8px 16px; border-radius: 999px;
  font-size: 13px; font-weight: 700;
  letter-spacing: .04em;
}

/* TRIMESTER CARDS — 3 column */
.dd-tri-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
}
@media (max-width: 820px) { .dd-tri-grid { grid-template-columns: 1fr; } }

.dd-tri {
  padding: 26px 24px;
  border-radius: 20px;
  background: var(--card-bg);
  border: 1.5px solid var(--hairline);
  position: relative;
  transition: border-color .2s, transform .2s;
}
.dd-tri.is-active {
  border-color: var(--pink);
  box-shadow: 0 0 0 4px rgba(233,106,140,.1);
  transform: translateY(-2px);
}
.dd-tri-num {
  position: absolute; top: 20px; right: 24px;
  font-size: 36px; font-weight: 800;
  color: var(--hairline); line-height: 1;
}
.dd-tri.is-active .dd-tri-num { color: var(--pink); opacity: .25; }
.dd-tri-label {
  font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  font-weight: 700; color: var(--muted); margin: 0 0 8px;
}
.dd-tri-title {
  font-size: 18px; font-weight: 700; color: var(--ink);
  margin: 0 0 6px; letter-spacing: -.005em;
}
.dd-tri-week { font-size: 13px; color: var(--pink-deep); font-weight: 600; margin: 0 0 14px; }
.dd-tri-body { font-size: 14px; line-height: 1.6; color: var(--text); margin: 0; }

/* WEEK TIMELINE */
.dd-tl {
  background: var(--card-bg); border-radius: var(--r-card);
  padding: clamp(20px, 3vw, 32px);
  margin-bottom: 20px;
  box-shadow: var(--shadow-soft);
}
.dd-tl-head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 18px; flex-wrap: wrap; gap: 12px;
}
.dd-tl-title { font-size: 17px; font-weight: 700; color: var(--ink); margin: 0; }
.dd-tl-list { display: flex; flex-direction: column; }
.dd-milestone {
  display: grid; grid-template-columns: 64px 1fr auto;
  gap: 16px; align-items: center;
  padding: 14px 4px;
  border-top: 1px solid var(--hairline);
}
.dd-milestone:first-child { border-top: 0; }
.dd-milestone-week {
  font-size: 13px; font-weight: 700;
  background: var(--pink-soft); color: var(--pink-deep);
  padding: 6px 10px; border-radius: 999px;
  text-align: center;
}
.dd-milestone.is-now .dd-milestone-week { background: var(--pink); color: #fff; }
.dd-milestone-body { font-size: 15px; color: var(--ink); line-height: 1.5; }
.dd-milestone-body strong { font-weight: 700; }
.dd-milestone-icon { font-size: 22px; }

/* panel */
.dd-panel {
  background: var(--card-bg); border-radius: var(--r-card);
  padding: clamp(20px, 3vw, 36px); margin-bottom: 20px;
  box-shadow: var(--shadow-soft);
}
.dd-panel-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 18px; padding: 0 2px; gap: 14px; flex-wrap: wrap; }
.dd-panel-title { font-size: clamp(17px, 2vw, 22px); font-weight: 700; color: var(--ink); margin: 0; letter-spacing: -.01em; }
.dd-panel-sub { font-size: 13px; color: var(--muted); margin: 0; }

.dd-acc { display: flex; flex-direction: column; gap: 8px; }
.dd-acc details { background: var(--card-soft); border: 1px solid var(--hairline); border-radius: 14px; overflow: hidden; }
.dd-acc details[open] { background: var(--card-bg); border-color: var(--pink); }
.dd-acc summary { padding: 14px 18px; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px; font-size: 16px; font-weight: 600; color: var(--ink); }
.dd-acc summary::-webkit-details-marker { display: none; }
.dd-acc summary::after { content: '+'; color: var(--pink); font-size: 18px; }
.dd-acc details[open] summary::after { content: '−'; }
.dd-acc-body { padding: 4px 18px 18px; font-size: 16px; line-height: 1.65; color: var(--text); }
.dd-acc-body p { margin: 0 0 10px; }
.dd-acc-body strong { color: var(--ink); }
.dd-acc-body ul { margin: 6px 0 10px 22px; padding: 0; }

.dd-faq-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 28px; }
@media (max-width: 820px) { .dd-faq-grid { grid-template-columns: 1fr; } }
.dd-related-title { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; font-weight: 600; color: var(--muted); margin: 0 0 14px; }
.dd-related-list { list-style: none; padding: 0; margin: 0; }
.dd-related-list li { padding: 12px 0; border-top: 1px solid var(--hairline); font-size: 13px; line-height: 1.5; color: var(--muted); }
.dd-related-list li:first-child { border-top: 0; padding-top: 4px; }
.dd-related-list a { color: var(--ink); font-weight: 600; text-decoration: none; }
.dd-related-list a:hover { color: var(--pink-deep); }