/* ====== Input/Onboarding Page – Modern Theme ====== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--kt-bg);
  color: var(--kt-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ====== Header ====== */
header {
  padding: 0 var(--kt-gap-lg);
  border-bottom: 2px solid var(--kt-green);
  background: var(--kt-white);
  position: sticky;
  top: 0;
  z-index: 10;
  min-height: 64px;
  display: flex;
  align-items: center;
  box-shadow: 0 2px 12px rgba(61, 186, 127, 0.12);
}

header h1 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--kt-text);
}

header h1 i {
  color: var(--kt-green);
}

/* ====== Main layout ====== */
main {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 2.5rem var(--kt-gap);
}

.section {
  width: 100%;
  max-width: 900px;
  background: var(--kt-white);
  border-radius: var(--kt-radius-lg);
  padding: 2.25rem;
  border: 1px solid var(--kt-border);
  box-shadow: var(--kt-shadow);
  display: flex;
  flex-direction: column;
  gap: 2rem;
  position: relative;
}

.flow-progress {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.flow-track {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: var(--kt-border);
  overflow: hidden;
}

.flow-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--kt-green);
  transition: width 0.3s ease;
}

.flow-help {
  color: var(--kt-text-muted);
  font-size: 0.95rem;
}

/* ====== Gender selection ====== */
.gender-container {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
}

.gender-option {
  flex: 1;
  background: var(--kt-bg);
  border: 2px solid var(--kt-border);
  border-radius: var(--kt-radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: border-color var(--kt-transition), background var(--kt-transition);
  cursor: pointer;
}

.gender-option:hover {
  border-color: var(--kt-green);
  background: var(--kt-green-soft);
}

.gender-option.selected {
  border-color: var(--kt-green);
  background: var(--kt-green-light);
}

.gender-btn {
  background: transparent;
  border: none;
  color: var(--kt-text);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 1rem;
}

.gender-btn i {
  margin-right: 0.5rem;
  color: var(--kt-green);
}

/* ====== Input groups ====== */
.input-container {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
}

.input-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

label {
  font-size: 0.95rem;
  color: var(--kt-text);
  font-weight: 500;
}

/* ====== Height slider ====== */
.height-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--kt-bg);
  padding: 1rem;
  border-radius: var(--kt-radius-md);
  border: 1px solid var(--kt-border);
}

#heightDisplay {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--kt-text);
}

input[type="range"] {
  width: 60%;
  accent-color: var(--kt-green);
  cursor: pointer;
}

/* ====== Age & Weight buttons ====== */
.number-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--kt-bg);
  padding: 1rem;
  border-radius: var(--kt-radius-md);
  border: 1px solid var(--kt-border);
}

.number-group button {
  background: var(--kt-green);
  border: none;
  color: var(--kt-white);
  font-size: 1.2rem;
  font-weight: 700;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  transition: background var(--kt-transition), box-shadow var(--kt-transition), transform var(--kt-transition);
  box-shadow: 0 2px 8px rgba(61, 186, 127, 0.2);
}

.number-group button:hover {
  background: var(--kt-green-dark);
  box-shadow: 0 4px 12px rgba(61, 186, 127, 0.35);
  transform: translateY(-2px);
}

.number-group span {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--kt-text);
}

.validation-message {
  min-height: 1.4rem;
  color: #dc2626;
  font-size: 0.92rem;
  font-weight: 500;
}

.draft-note {
  min-height: 1.2rem;
  color: var(--kt-green-dark);
  font-size: 0.9rem;
}

/* ====== Next button ====== */
.button-container {
  text-align: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--kt-radius-sm);
  background: var(--kt-green);
  color: var(--kt-white);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 8px rgba(61, 186, 127, 0.35);
  transition: background var(--kt-transition), box-shadow var(--kt-transition), transform var(--kt-transition);
}

.btn:hover {
  background: var(--kt-green-dark);
  box-shadow: 0 4px 16px rgba(61, 186, 127, 0.45);
  transform: translateY(-2px);
}

/* ====== Footer ====== */
footer {
  text-align: center;
  padding: var(--kt-gap-md);
  font-size: 0.9rem;
  color: var(--kt-text-muted);
  background: var(--kt-white);
  border-top: 2px solid var(--kt-green);
}

footer a {
  color: var(--kt-green);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--kt-transition);
}

footer a:hover {
  color: var(--kt-green-dark);
}

/* ====== Responsive ====== */
@media (max-width: 768px) {
  .gender-container,
  .input-container {
    flex-direction: column;
  }

  .section {
    padding: var(--kt-gap-md);
  }

  main {
    padding: var(--kt-gap) var(--kt-gap-sm);
  }
}