/* ═══════════════════════════════════════════
   Health Risk Prediction System — Global CSS
   Palette: #EEFAF6 · #C8EFE1 · #5CC9A8 · #12352C
   ═══════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;600;700;800&display=swap');

/* ── Reset & Base ────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-bg:        #EEFAF6;
  --c-light:     #C8EFE1;
  --c-mid:       #5CC9A8;
  --c-dark:      #12352C;
  --c-white:     #ffffff;
  --c-muted:     #6B8F82;
  --c-danger:    #C0392B;
  --c-warn:      #E67E22;

  --shadow-sm:   0 2px 8px rgba(18,53,44,.08);
  --shadow-md:   0 6px 24px rgba(18,53,44,.12);
  --shadow-lg:   0 16px 48px rgba(18,53,44,.16);

  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   22px;
  --radius-xl:   32px;

  --transition:  0.25s cubic-bezier(.4,0,.2,1);
}

html { 
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--c-bg);
  color: var(--c-dark);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Typography ──────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: 'Outfit', sans-serif;
  color: var(--c-dark);
  line-height: 1.2;
}

/* ── Scrollbar ───────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--c-bg); }
::-webkit-scrollbar-thumb { background: var(--c-light); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--c-mid); }

/* ══════════════════════════════════════════════════
   LAYOUT SHELL
   ══════════════════════════════════════════════════ */
.app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Topbar ──────────────────────────────────────── */
.topbar {
  background: var(--c-dark);
  padding: 0 2.5rem;
  height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(0,0,0,.25);
}

.topbar__brand {
  display: flex;
  align-items: center;
  gap: .7rem;
  text-decoration: none;
  color: var(--c-white);
}

.topbar__brand-dot {
  width: 10px; height: 10px;
  background: var(--c-mid);
  border-radius: 50%;
  display: inline-block;
}

.topbar__brand-text {
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--c-white);
}

.topbar__actions { display: flex; gap: .75rem; align-items: center; }

.topbar__link {
  font-size: .82rem;
  font-weight: 500;
  color: var(--c-light);
  text-decoration: none;
  padding: .3rem .8rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.topbar__link:hover {
  background: rgba(92,201,168,.15);
  color: var(--c-white);
}

/* ── Page container ──────────────────────────────── */
.page {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
  width: 100%;
  overflow: hidden;
}

/* ── Card ────────────────────────────────────────── */
.card {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

/* ══════════════════════════════════════════════════
   WELCOME PAGE
   ══════════════════════════════════════════════════ */
.welcome-hero {
  height: calc(100vh - 62px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  overflow: hidden;
  width: 100%;
}

.welcome-hero__left {
  background: var(--c-dark);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 5rem 4rem;
  position: relative;
  overflow: hidden;
}

.welcome-hero__left::before {
  content: '';
  position: absolute;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: rgba(92,201,168,.08);
  top: -120px; left: -120px;
}

.welcome-hero__left::after {
  content: '';
  position: absolute;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: rgba(92,201,168,.06);
  bottom: -60px; right: -60px;
}

.welcome-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: rgba(92,201,168,.15);
  border: 1px solid rgba(92,201,168,.3);
  border-radius: 99px;
  padding: .35rem 1rem;
  font-size: .78rem;
  font-weight: 600;
  color: var(--c-mid);
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 1.8rem;
  width: fit-content;
}

.welcome-badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--c-mid);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(1.4); }
}

.welcome-title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  color: var(--c-white);
  line-height: 1.15;
  margin-bottom: 1.25rem;
  position: relative;
  z-index: 1;
}

.welcome-title span { color: var(--c-mid); }

.welcome-desc {
  font-size: .97rem;
  color: rgba(200,239,225,.7);
  line-height: 1.75;
  max-width: 400px;
  margin-bottom: 2.5rem;
  position: relative;
  z-index: 1;
}

.welcome-features {
  display: flex;
  flex-direction: column;
  gap: .9rem;
  margin-bottom: 3rem;
  position: relative;
  z-index: 1;
}

.welcome-feature {
  display: flex;
  align-items: center;
  gap: .75rem;
  color: rgba(200,239,225,.85);
  font-size: .9rem;
}

.welcome-feature-icon {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(92,201,168,.15);
  border: 1px solid rgba(92,201,168,.25);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--c-mid);
  font-size: .85rem;
}

.btn-continue {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  background: var(--c-mid);
  color: var(--c-dark);
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  padding: .9rem 2.2rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(92,201,168,.4);
  position: relative;
  z-index: 1;
  width: fit-content;
}

.btn-continue:hover {
  background: #4db896;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(92,201,168,.5);
}

.btn-continue:active { transform: translateY(0); }

.btn-continue svg { width: 18px; height: 18px; }

.welcome-hero__right {
  background: var(--c-light);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 3rem;
  position: relative;
  overflow: hidden;
}

.welcome-hero__right::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 30%, rgba(92,201,168,.3), transparent 60%);
}

.welcome-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  width: 100%;
  max-width: 380px;
  position: relative;
  z-index: 1;
}

.welcome-stat-card {
  background: var(--c-white);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid rgba(92,201,168,.15);
}

.welcome-stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.welcome-stat-card--accent {
  background: var(--c-dark);
  border-color: transparent;
}

.welcome-stat-value {
  font-family: 'Outfit', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--c-mid);
  line-height: 1;
  margin-bottom: .35rem;
}

.welcome-stat-card--accent .welcome-stat-value { color: var(--c-mid); }

.welcome-stat-label {
  font-size: .78rem;
  font-weight: 500;
  color: var(--c-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
}

.welcome-stat-card--accent .welcome-stat-label { color: rgba(200,239,225,.6); }

/* ══════════════════════════════════════════════════
   FORM PAGE
   ══════════════════════════════════════════════════ */
.form-page {
  padding: 2.5rem 1.5rem 4rem;
  max-width: 860px;
  margin: 0 auto;
  width: 100%;
}

.form-page__header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-label {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-mid);
  margin-bottom: .6rem;
}

.form-page__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--c-dark);
  margin-bottom: .6rem;
}

.form-page__sub {
  font-size: .92rem;
  color: var(--c-muted);
  max-width: 500px;
  margin: 0 auto;
}

/* ── Form card ───────────────────────────────────── */
.form-card {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.form-section {
  padding: 2rem 2.5rem;
  border-bottom: 1px solid var(--c-bg);
}

.form-section:last-child { border-bottom: none; }

.form-section__title {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-mid);
  margin-bottom: 1.4rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.form-section__title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--c-bg);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: .45rem;
}

.form-label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--c-dark);
}

.form-label sup { color: var(--c-danger); margin-left: 2px; }

.form-input,
.form-select {
  background: var(--c-bg);
  border: 1.5px solid var(--c-light);
  border-radius: var(--radius-sm);
  padding: .65rem 1rem;
  font-size: .9rem;
  font-family: 'Inter', sans-serif;
  color: var(--c-dark);
  transition: var(--transition);
  width: 100%;
  outline: none;
  appearance: none;
}

.form-input:focus,
.form-select:focus {
  border-color: var(--c-mid);
  background: var(--c-white);
  box-shadow: 0 0 0 3px rgba(92,201,168,.18);
}

.form-input::placeholder { color: #aac8be; }

.form-hint {
  font-size: .75rem;
  color: var(--c-muted);
  margin-top: .2rem;
}

.form-bmi-preview {
  background: var(--c-bg);
  border: 1.5px solid var(--c-light);
  border-radius: var(--radius-sm);
  padding: .65rem 1rem;
  font-size: .9rem;
  color: var(--c-dark);
  font-weight: 600;
  min-height: 42px;
}

/* ── Radio toggle ────────────────────────────────── */
.radio-group {
  display: flex;
  gap: .6rem;
  flex-wrap: wrap;
}

.radio-option { display: none; }

.radio-label {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem 1.1rem;
  border: 1.5px solid var(--c-light);
  border-radius: 99px;
  font-size: .84rem;
  font-weight: 500;
  color: var(--c-muted);
  cursor: pointer;
  transition: var(--transition);
  background: var(--c-bg);
  user-select: none;
}

.radio-option:checked + .radio-label {
  background: var(--c-dark);
  border-color: var(--c-dark);
  color: var(--c-white);
  box-shadow: 0 2px 10px rgba(18,53,44,.2);
}

.radio-label:hover { border-color: var(--c-mid); color: var(--c-dark); }

/* ── Submit ───────────────────────────────────────── */
.form-footer {
  padding: 1.75rem 2.5rem;
  background: var(--c-bg);
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 1rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  background: var(--c-dark);
  color: var(--c-white);
  font-family: 'Outfit', sans-serif;
  font-size: .95rem;
  font-weight: 700;
  padding: .8rem 2rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary:hover {
  background: var(--c-mid);
  color: var(--c-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(92,201,168,.4);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: transparent;
  color: var(--c-muted);
  font-size: .88rem;
  font-weight: 500;
  padding: .75rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--c-light);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-secondary:hover {
  border-color: var(--c-mid);
  color: var(--c-dark);
}

/* ── Error block ─────────────────────────────────── */
.error-banner {
  background: #fff5f5;
  border: 1.5px solid #fca5a5;
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  gap: .75rem;
  align-items: flex-start;
}

.error-banner__icon { color: var(--c-danger); flex-shrink: 0; margin-top: 2px; }

.error-banner__title {
  font-weight: 700;
  font-size: .9rem;
  color: var(--c-danger);
  margin-bottom: .3rem;
}

.error-banner__list {
  list-style: disc;
  padding-left: 1.1rem;
  font-size: .85rem;
  color: #b91c1c;
  line-height: 1.7;
}

/* ══════════════════════════════════════════════════
   RESULTS PAGE
   ══════════════════════════════════════════════════ */
.results-page {
  max-width: 1060px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 5rem;
  width: 100%;
}

.results-page__header {
  margin-bottom: 2.5rem;
}

.results-page__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--c-dark);
  margin-top: .3rem;
}

.results-page__sub {
  font-size: .9rem;
  color: var(--c-muted);
  margin-top: .4rem;
}

/* ── Risk verdict card ───────────────────────────── */
.verdict-card {
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-bottom: 2rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
}

.verdict-card--high {
  background: linear-gradient(135deg, #fff5f5, #fff0f0);
  border: 1.5px solid #fca5a5;
}

.verdict-card--low {
  background: linear-gradient(135deg, #f0faf5, #eaf8f1);
  border: 1.5px solid var(--c-light);
}

.verdict-card__label {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: .5rem;
}

.verdict-card--high .verdict-card__label { color: var(--c-danger); }
.verdict-card--low  .verdict-card__label { color: var(--c-mid); }

.verdict-card__title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  margin-bottom: .6rem;
}

.verdict-card--high .verdict-card__title { color: var(--c-danger); }
.verdict-card--low  .verdict-card__title { color: var(--c-dark); }

.verdict-card__desc {
  font-size: .92rem;
  color: var(--c-muted);
  max-width: 520px;
  line-height: 1.65;
}

.verdict-card__badge {
  width: 110px; height: 110px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.verdict-card--high .verdict-card__badge {
  background: rgba(192,57,43,.1);
  border: 2px solid rgba(192,57,43,.25);
}

.verdict-card--low .verdict-card__badge {
  background: rgba(92,201,168,.15);
  border: 2px solid rgba(92,201,168,.35);
}

.verdict-card__badge-pct {
  font-family: 'Outfit', sans-serif;
  font-size: 1.6rem;
  font-weight: 800;
  line-height: 1;
}

.verdict-card--high .verdict-card__badge-pct { color: var(--c-danger); }
.verdict-card--low  .verdict-card__badge-pct { color: var(--c-mid); }

.verdict-card__badge-text {
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--c-muted);
  text-transform: uppercase;
  margin-top: .2rem;
}

/* ── Results grid ────────────────────────────────── */
.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.results-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.results-grid--wide {
  grid-template-columns: 1fr;
}

/* ── Section card ────────────────────────────────── */
.section-card {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1.75rem;
  border: 1px solid rgba(92,201,168,.1);
}

.section-card__title {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--c-mid);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.section-card__title-icon {
  width: 28px; height: 28px;
  border-radius: 7px;
  background: var(--c-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-mid);
}

/* ── Stat row ────────────────────────────────────── */
.stat-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.stat-item {
  flex: 1;
  min-width: 90px;
  background: var(--c-bg);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: center;
}

.stat-item__value {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--c-dark);
  line-height: 1;
  margin-bottom: .25rem;
}

.stat-item__label {
  font-size: .72rem;
  font-weight: 500;
  color: var(--c-muted);
  text-transform: uppercase;
  letter-spacing: .05em;
}

/* ── Chart container ─────────────────────────────── */
.chart-img {
  width: 100%;
  border-radius: var(--radius-sm);
}

/* ── Suggestions list ────────────────────────────── */
.suggestions-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.suggestion-item {
  display: flex;
  gap: 1rem;
  padding: 1.1rem;
  background: var(--c-bg);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--c-mid);
  transition: var(--transition);
}

.suggestion-item:hover {
  background: #e2f4ec;
  transform: translateX(4px);
}

.suggestion-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: var(--c-white);
  border: 1px solid var(--c-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-mid);
  flex-shrink: 0;
}

.suggestion-content__title {
  font-weight: 700;
  font-size: .88rem;
  color: var(--c-dark);
  margin-bottom: .25rem;
}

.suggestion-content__body {
  font-size: .83rem;
  color: var(--c-muted);
  line-height: 1.6;
}

/* ── Action buttons row ──────────────────────────── */
.results-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

/* ── Footer ──────────────────────────────────────── */
.footer {
  background: var(--c-dark);
  color: rgba(200,239,225,.5);
  text-align: center;
  font-size: .78rem;
  padding: 1.25rem;
  letter-spacing: .03em;
}

/* ══════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .welcome-hero { grid-template-columns: 1fr; }
  .welcome-hero__right { display: none; }
  .results-grid { grid-template-columns: 1fr; }
  .results-grid--3 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .form-section { padding: 1.5rem 1.25rem; }
  .form-footer  { padding: 1.25rem; flex-direction: column-reverse; }
  .verdict-card { grid-template-columns: 1fr; }
  .verdict-card__badge { width: 80px; height: 80px; }
  .results-grid--3 { grid-template-columns: 1fr; }
  .topbar { padding: 0 1.25rem; }
  .welcome-hero__left { padding: 3rem 2rem; }
}

/* ── Animations ──────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.animate-up {
  animation: fadeInUp .5s ease both;
}

.animate-up-1 { animation-delay: .05s; }
.animate-up-2 { animation-delay: .12s; }
.animate-up-3 { animation-delay: .19s; }
.animate-up-4 { animation-delay: .26s; }