:root {
  --bg: #09111f;
  --bg2: #101a2d;
  --card: rgba(255, 255, 255, 0.92);
  --card-soft: rgba(255, 255, 255, 0.74);
  --ink: #162033;
  --muted: #647089;
  --line: rgba(22, 32, 51, 0.12);
  --primary: #5b6cff;
  --primary-dark: #3948d7;
  --accent: #16c7b8;
  --orange: #ff9f43;
  --pink: #ff5c8a;
  --green: #23c483;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.30);
  --radius: 28px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 15% 10%, rgba(91, 108, 255, .40), transparent 30%),
    radial-gradient(circle at 82% 18%, rgba(255, 92, 138, .25), transparent 26%),
    radial-gradient(circle at 50% 80%, rgba(22, 199, 184, .22), transparent 32%),
    linear-gradient(135deg, var(--bg), var(--bg2));
}

button, input, select, textarea { font: inherit; }
button { cursor: pointer; }

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0 46px;
}

.hero {
  position: relative;
  overflow: hidden;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 34px;
  padding: 18px;
  min-height: 420px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.04)),
    linear-gradient(135deg, rgba(91, 108, 255, 0.28), rgba(22, 199, 184, 0.08));
  box-shadow: var(--shadow);
  isolation: isolate;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  filter: blur(4px);
  opacity: .72;
  z-index: -1;
}

.hero::before {
  width: 280px; height: 280px;
  background: linear-gradient(135deg, var(--primary), var(--pink));
  top: -80px; right: 10%;
}

.hero::after {
  width: 220px; height: 220px;
  background: linear-gradient(135deg, var(--accent), var(--orange));
  bottom: -70px; left: 10%;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: relative;
  z-index: 2;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
  text-decoration: none;
}

.brand-mark {
  width: 48px; height: 48px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-weight: 900;
  letter-spacing: -.05em;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  box-shadow: 0 12px 28px rgba(0,0,0,.25);
}

.brand small {
  display: block;
  margin-top: 2px;
  color: rgba(255,255,255,.72);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 28px;
  align-items: center;
  padding: 56px 20px 22px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: .75rem;
}

.hero h1 {
  margin: 0;
  max-width: 760px;
  color: var(--white);
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: .94;
  letter-spacing: -.07em;
}

.hero-text {
  max-width: 690px;
  margin: 22px 0 0;
  color: rgba(255,255,255,.78);
  font-size: 1.1rem;
  line-height: 1.65;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.hero-badges span {
  padding: 10px 14px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 999px;
  color: rgba(255,255,255,.90);
  background: rgba(255,255,255,.09);
  backdrop-filter: blur(10px);
}

.glass {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.20);
  backdrop-filter: blur(18px);
  box-shadow: 0 24px 60px rgba(0,0,0,.20);
}

.preview-card {
  justify-self: end;
  width: min(440px, 100%);
  border-radius: 30px;
  padding: 22px;
}

.avatar-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.avatar-pair.mini p {
  margin: 0 0 8px;
  color: rgba(255,255,255,.82);
  font-weight: 800;
}

.avatar-box {
  min-height: 320px;
  display: grid;
  place-items: center;
  border-radius: 24px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 20%, rgba(255,255,255,.98), rgba(255,255,255,.80) 48%, rgba(255,255,255,.62)),
    linear-gradient(135deg, rgba(91,108,255,.12), rgba(22,199,184,.12));
  border: 1px solid rgba(255,255,255,.48);
}

.avatar-box.small {
  min-height: 230px;
  border-radius: 22px;
}

.avatar-box svg {
  width: 100%;
  height: 100%;
  max-height: 330px;
}

.mini-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 14px;
}

.mini-stats span {
  display: grid;
  gap: 2px;
  padding: 14px;
  border-radius: 18px;
  background: rgba(255,255,255,.14);
  color: var(--white);
}

.mini-stats strong { font-size: 1.45rem; }
.mini-stats small { color: rgba(255,255,255,.70); }

.main-card {
  margin-top: -24px;
  position: relative;
  z-index: 3;
  background: var(--card);
  backdrop-filter: blur(22px);
  border: 1px solid rgba(255,255,255,.65);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

.stepper {
  display: flex;
  gap: 8px;
  padding: 8px;
  border-radius: 22px;
  background: rgba(22,32,51,.06);
  overflow-x: auto;
}

.step-pill {
  flex: 1;
  min-width: max-content;
  border: 0;
  border-radius: 16px;
  padding: 12px 14px;
  color: var(--muted);
  background: transparent;
  font-weight: 800;
  transition: .2s ease;
}

.step-pill.active {
  color: var(--white);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 10px 22px rgba(91,108,255,.25);
}

form { margin-top: 22px; }

.form-step { display: none; animation: fadeUp .24s ease; }
.form-step.active { display: block; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-heading {
  margin-bottom: 22px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  line-height: 1;
  letter-spacing: -.045em;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  margin: 10px 0 0;
  line-height: 1.6;
}

.section-heading.split {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 18px;
}

.field-grid {
  display: grid;
  gap: 16px;
}

.field-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.field-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }

label {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-weight: 800;
}

input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px 14px;
  color: var(--ink);
  background: rgba(255,255,255,.86);
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}

textarea {
  min-height: 118px;
  resize: vertical;
  line-height: 1.45;
}

input:focus, select:focus, textarea:focus {
  border-color: rgba(91,108,255,.55);
  box-shadow: 0 0 0 5px rgba(91,108,255,.12);
  background: var(--white);
}

code {
  padding: 2px 6px;
  border-radius: 8px;
  color: var(--primary-dark);
  background: rgba(91,108,255,.10);
}

.muted { color: var(--muted); font-weight: 600; }

.hint-card {
  border: 1px solid rgba(91,108,255,.16);
  background: linear-gradient(135deg, rgba(91,108,255,.08), rgba(22,199,184,.08));
  padding: 18px;
  border-radius: 20px;
}

.hint-card p { margin: 6px 0 0; color: var(--muted); line-height: 1.55; }

.body-builder {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 18px;
  align-items: start;
}

.avatar-panel,
.sliders-panel {
  border: 1px solid var(--line);
  border-radius: 26px;
  background: linear-gradient(135deg, rgba(255,255,255,.78), rgba(255,255,255,.52));
  padding: 16px;
}

.avatar-card {
  min-width: 0;
}

.avatar-card > span {
  display: inline-flex;
  margin-bottom: 8px;
  font-weight: 900;
  color: var(--muted);
}

.goal-card > span { color: var(--primary-dark); }

.fine-print {
  margin: 12px 4px 0;
  color: var(--muted);
  font-size: .9rem;
}

.sliders-panel { display: grid; gap: 16px; }

.slider-line {
  gap: 10px;
  padding: 14px;
  border: 1px solid rgba(22,32,51,.08);
  border-radius: 20px;
  background: rgba(255,255,255,.72);
}

.slider-line output {
  justify-self: end;
  margin-top: -26px;
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--white);
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

input[type="range"] {
  accent-color: var(--primary);
  padding: 0;
  height: 34px;
  border: none;
  background: transparent;
  box-shadow: none;
}

.form-actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.primary-btn,
.ghost-btn {
  border: 0;
  border-radius: 16px;
  padding: 13px 18px;
  font-weight: 900;
  transition: transform .16s ease, box-shadow .16s ease, opacity .16s ease;
}

.primary-btn {
  color: var(--white);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 14px 28px rgba(91,108,255,.22);
}

.primary-btn.big { padding: 16px 22px; font-size: 1rem; }

.ghost-btn {
  color: var(--white);
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.22);
}

.main-card .ghost-btn {
  color: var(--ink);
  background: rgba(22,32,51,.06);
  border-color: rgba(22,32,51,.08);
}

.primary-btn:hover,
.ghost-btn:hover { transform: translateY(-1px); }
.primary-btn:disabled { opacity: .58; cursor: not-allowed; transform: none; }

.hidden { display: none !important; }

.status-box {
  margin: 18px 0;
  padding: 16px;
  border-radius: 18px;
  background: rgba(91,108,255,.09);
  color: var(--primary-dark);
  border: 1px solid rgba(91,108,255,.18);
  font-weight: 800;
}

.status-box.error {
  color: #a0243b;
  border-color: rgba(255,92,138,.28);
  background: rgba(255,92,138,.10);
}

.result-box {
  margin-top: 18px;
  display: grid;
  gap: 18px;
}

.plan-hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 20px;
  border-radius: 24px;
  color: var(--white);
  background: linear-gradient(135deg, var(--primary), #7b4cff 48%, var(--accent));
  box-shadow: 0 18px 42px rgba(91,108,255,.25);
}

.plan-hero h3 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.35rem);
  letter-spacing: -.04em;
}

.plan-hero p { margin: 8px 0 0; color: rgba(255,255,255,.82); line-height: 1.55; }

.plan-tools { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.plan-tools .ghost-btn { color: var(--white); }

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.metric-card {
  padding: 18px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.82);
}

.metric-card small { display: block; color: var(--muted); font-weight: 800; }
.metric-card strong { display: block; margin-top: 6px; font-size: 1.45rem; letter-spacing: -.03em; }

.plan-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.plan-section {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255,255,255,.84);
  padding: 18px;
}

.plan-section.full { grid-column: 1 / -1; }
.plan-section h4 { margin: 0 0 12px; font-size: 1.2rem; }
.plan-section ul, .plan-section ol { margin: 0; padding-left: 20px; color: var(--ink); line-height: 1.6; }
.plan-section li + li { margin-top: 8px; }

.workout-day {
  padding: 14px;
  border-radius: 18px;
  background: rgba(22,32,51,.045);
  border: 1px solid rgba(22,32,51,.08);
}

.workout-day + .workout-day { margin-top: 12px; }
.workout-day strong { display: block; font-size: 1.05rem; }
.workout-day small { color: var(--muted); font-weight: 800; }

.footer-note {
  padding: 20px 8px 0;
  color: rgba(255,255,255,.62);
  text-align: center;
  line-height: 1.5;
}

@media (max-width: 900px) {
  .hero-grid,
  .body-builder,
  .field-grid.two,
  .field-grid.three,
  .plan-grid,
  .plan-hero {
    grid-template-columns: 1fr;
  }

  .preview-card { justify-self: stretch; }
  .section-heading.split { align-items: stretch; flex-direction: column; }
  .metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .app-shell { width: min(100% - 18px, 1180px); padding-top: 9px; }
  .hero { border-radius: 24px; padding: 12px; }
  .hero-grid { padding: 34px 6px 12px; }
  .main-card { padding: 14px; border-radius: 22px; }
  .avatar-pair { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: 1fr; }
  .topbar { align-items: flex-start; }
  .brand-mark { width: 42px; height: 42px; border-radius: 14px; }
  .hero h1 { font-size: clamp(2.3rem, 13vw, 4.4rem); }
}

@media print {
  body { background: #fff; }
  .hero, .stepper, .form-actions, .footer-note, #generateBtn { display: none !important; }
  .app-shell { width: 100%; padding: 0; }
  .main-card { box-shadow: none; border: 0; margin: 0; }
  .form-step { display: none !important; }
  .form-step[data-step="5"] { display: block !important; }
  .result-box { display: grid !important; }
  .plan-hero { color: #111; background: #f3f4f6; box-shadow: none; }
}