/* ================================================================
   WORLD POPULATION ON YOUR BIRTHDAY — Stylesheet
   Branding aligned with age-calculator.css & older-than-you.css
   All selectors scoped to #pob-root to avoid WordPress theme conflicts
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=DM+Sans:wght@300;400;500;600&family=DM+Mono:wght@400;500&display=swap');

/* ── Reset ── */
#pob-root *,
#pob-root *::before,
#pob-root *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Root / Variables ── */
#pob-root {
  /* Shared brand palette */
  --bg:         #eef2f7;
  --card:       #ffffff;
  --border:     #b0c4de;
  --shadow:     0 2px 16px rgba(10,61,122,0.08);
  --shadow-lg:  0 8px 40px rgba(10,61,122,0.14);
  --blue-dark:  #0a3d7a;
  --blue-mid:   #1565c0;
  --blue-light: #0288d1;
  --red:        #c62828;
  --teal:       #00897b;
  --orange:     #f57c00;
  --purple:     #7b1fa2;
  --green:      #2e7d32;
  --navy:       #1a2332;
  --label:      #4a5568;
  --white:      #ffffff;
  --radius:     14px;
  --radius-sm:  9px;
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body:    'DM Sans', Arial, Helvetica, sans-serif;
  --font-mono:    'DM Mono', 'Courier New', Courier, monospace;

  font-family: var(--font-body);
  color: var(--navy);
  background: var(--bg);
  padding: 20px 14px 36px;
  min-width: 280px;
  isolation: isolate;
}

/* ── Layout ── */
#pob-root .pob-wrap {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* ── Hero ── */
#pob-root .pob-hero {
  background: var(--blue-dark);
  border-radius: var(--radius);
  padding: 30px 28px;
  color: var(--white);
  position: relative;
  overflow: hidden;
}
#pob-root .pob-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 78% 18%, rgba(255,255,255,0.07) 0%, transparent 52%),
    radial-gradient(circle at 12% 82%, rgba(2,136,209,0.18) 0%, transparent 50%);
  pointer-events: none;
}
#pob-root .pob-hero::after {
  content: '';
  position: absolute;
  right: -55px;
  top: -55px;
  width: 210px;
  height: 210px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.09);
  box-shadow: 0 0 0 40px rgba(255,255,255,0.03), 0 0 0 80px rgba(255,255,255,0.015);
  pointer-events: none;
}
#pob-root .pob-hero-inner { position: relative; z-index: 1; }
#pob-root .pob-hero-eyebrow {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  margin-bottom: 8px;
}
#pob-root .pob-hero-title {
  font-family: var(--font-display);
  font-size: clamp(22px, 5vw, 28px);
  line-height: 1.2;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 10px;
}
#pob-root .pob-hero-sub {
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  font-weight: 300;
  max-width: 480px;
  line-height: 1.65;
}

/* ── Card ── */
#pob-root .pob-card {
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}
#pob-root .pob-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 18px;
}

/* ── Form ── */
#pob-root .pob-fields {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}
#pob-root .pob-field { display: flex; flex-direction: column; gap: 5px; }
#pob-root .pob-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #2d3748;
}
#pob-root .pob-input,
#pob-root .pob-select {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--navy);
  background: #f0f4f9;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  outline: none;
  width: 100%;
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none;
  appearance: none;
}
#pob-root .pob-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='7'%3E%3Cpath fill='%232d3748' d='M6 7L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
  cursor: pointer;
}
#pob-root .pob-input:focus,
#pob-root .pob-select:focus {
  border-color: var(--blue-dark);
  box-shadow: 0 0 0 3px rgba(10,61,122,0.12);
  background: var(--white);
}
#pob-root .pob-input.pob-error {
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(198,40,40,0.10);
}
#pob-root .pob-err-msg {
  font-size: 11px;
  color: var(--red);
  font-weight: 700;
  min-height: 14px;
}

/* ── Primary button ── */
#pob-root .pob-btn {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  background: var(--blue-dark);
  border: none;
  border-radius: var(--radius-sm);
  padding: 13px 26px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  transition: transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 4px 14px rgba(10,61,122,0.28);
}
#pob-root .pob-btn:hover  { transform: translateY(-1px); box-shadow: 0 6px 22px rgba(10,61,122,0.38); }
#pob-root .pob-btn:active { transform: translateY(0); }

/* ── Ghost button ── */
#pob-root .pob-btn-ghost {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  color: var(--blue-dark);
  background: transparent;
  border: 2px solid var(--blue-dark);
  border-radius: var(--radius-sm);
  padding: 9px 18px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 0.2s;
}
#pob-root .pob-btn-ghost:hover { background: rgba(10,61,122,0.07); }

/* ── Results wrapper ── */
#pob-root .pob-result {
  display: none;
  flex-direction: column;
  gap: 18px;
}
#pob-root .pob-result.pob-visible { display: flex; }

/* ── Main population banner ── */
#pob-root .pob-banner {
  background: var(--blue-dark);
  border-radius: var(--radius);
  padding: 30px 28px;
  color: var(--white);
  position: relative;
  overflow: hidden;
  text-align: center;
}
#pob-root .pob-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(255,255,255,0.08) 0%, transparent 65%);
  pointer-events: none;
}
#pob-root .pob-banner-eyebrow {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
#pob-root .pob-banner-num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 6vw, 46px);
  font-weight: 500;
  line-height: 1;
  color: var(--white);
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
  letter-spacing: -1px;
}
#pob-root .pob-banner-date {
  font-size: 14px;
  color: rgba(255,255,255,0.78);
  font-weight: 300;
  position: relative;
  z-index: 1;
}

/* ── Stats grid ── */
#pob-root .pob-stats {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}
#pob-root .pob-stat {
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 14px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 4px;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}
#pob-root .pob-stat:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
#pob-root .pob-stat-accent {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
}
#pob-root .pob-stat:nth-child(1) .pob-stat-accent { background: var(--blue-dark); }
#pob-root .pob-stat:nth-child(2) .pob-stat-accent { background: var(--green); }
#pob-root .pob-stat:nth-child(3) .pob-stat-accent { background: var(--teal); }
#pob-root .pob-stat:nth-child(4) .pob-stat-accent { background: var(--orange); }
#pob-root .pob-stat:nth-child(5) .pob-stat-accent { background: var(--purple); }
#pob-root .pob-stat:nth-child(6) .pob-stat-accent { background: var(--blue-light); }
#pob-root .pob-stat-icon  { font-size: 16px; margin-bottom: 4px; line-height: 1; display: block; }
#pob-root .pob-stat-val {
  font-family: var(--font-mono);
  font-size: clamp(12px, 2.5vw, 16px);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
  display: block;
}
#pob-root .pob-stat-lbl {
  font-size: 11px;
  color: var(--label);
  font-weight: 700;
  display: block;
}

/* ── Progress card ── */
#pob-root .pob-progress-card {
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 24px;
}
#pob-root .pob-section-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
#pob-root .pob-section-title span { font-size: 16px; }
#pob-root .pob-prog-labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--label);
  font-weight: 700;
  margin-bottom: 6px;
}
#pob-root .pob-prog-track {
  background: #e0e8f0;
  border: 1px solid var(--border);
  border-radius: 100px;
  height: 13px;
  overflow: hidden;
}
#pob-root .pob-prog-fill {
  height: 100%;
  border-radius: 100px;
  background: var(--blue-dark);
  width: 0%;
  transition: width 1.2s cubic-bezier(0.16,1,0.3,1);
}
#pob-root .pob-prog-caption {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--navy);
  font-weight: 700;
  text-align: right;
  margin-top: 7px;
}

/* ── Milestones ── */
#pob-root .pob-milestones {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 18px;
}
#pob-root .pob-milestone-row {
  display: grid;
  grid-template-columns: 60px 1fr 90px;
  align-items: center;
  gap: 10px;
}
#pob-root .pob-milestone-year {
  font-size: 12px;
  font-weight: 700;
  color: var(--navy);
}
#pob-root .pob-milestone-bar-track {
  background: #e0e8f0;
  border: 1px solid var(--border);
  border-radius: 100px;
  height: 7px;
  overflow: hidden;
}
#pob-root .pob-milestone-fill {
  height: 100%;
  border-radius: 100px;
  background: var(--blue-dark);
  transition: width 1.2s cubic-bezier(0.16,1,0.3,1);
  width: 0%;
}
#pob-root .pob-milestone-pop {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--label);
  font-weight: 700;
  text-align: right;
}
#pob-root .pob-milestone-row.pob-ms-you .pob-milestone-year { color: var(--orange); }
#pob-root .pob-milestone-row.pob-ms-you .pob-milestone-fill { background: var(--orange); }

/* ── Context card ── */
#pob-root .pob-context-card {
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 24px;
}
#pob-root .pob-context-text {
  font-size: 14px;
  color: var(--label);
  line-height: 1.78;
}
#pob-root .pob-hl      { color: var(--blue-dark); font-weight: 700; }
#pob-root .pob-hl-grn  { color: var(--green);     font-weight: 700; }
#pob-root .pob-hl-org  { color: var(--orange);    font-weight: 700; }
#pob-root .pob-hl-teal { color: var(--teal);      font-weight: 700; }

/* ── Action row ── */
#pob-root .pob-action-row { display: flex; gap: 10px; flex-wrap: wrap; }

/* ── Footnote ── */
#pob-root .pob-footnote {
  text-align: center;
  font-size: 12px;
  color: var(--label);
  font-weight: 600;
  line-height: 1.65;
}

/* ── Animations ── */
@keyframes pob-fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
#pob-root .pob-anim    { animation: pob-fade-up 0.55s cubic-bezier(0.16,1,0.3,1) both; }
#pob-root .pob-anim-d1 { animation-delay: 0.05s; }
#pob-root .pob-anim-d2 { animation-delay: 0.12s; }
#pob-root .pob-anim-d3 { animation-delay: 0.19s; }
#pob-root .pob-anim-d4 { animation-delay: 0.26s; }

/* ── Responsive ── */
@media (max-width: 580px) {
  #pob-root .pob-card,
  #pob-root .pob-progress-card,
  #pob-root .pob-context-card { padding: 20px 18px; }
  #pob-root .pob-hero          { padding: 28px 22px 24px; }
  #pob-root .pob-fields        { grid-template-columns: 1fr 1fr; }
  #pob-root .pob-stats         { grid-template-columns: 1fr 1fr; }
  #pob-root .pob-stat:last-child:nth-child(odd) { grid-column: 1 / -1; }
  #pob-root .pob-milestone-row { grid-template-columns: 50px 1fr 75px; }
}
@media (max-width: 400px) {
  #pob-root .pob-fields  { grid-template-columns: 1fr; }
  #pob-root .pob-stats   { grid-template-columns: 1fr; }
  #pob-root .pob-milestone-row { grid-template-columns: 44px 1fr 60px; }
}