/* ============================================
   Serena Health — Intake Modal
   Full-screen mobile-first, centered card desktop
   ============================================ */

/* ── Animations ── */
@keyframes serena-slide-in-right {
  from { transform: translateX(30px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes serena-slide-out-left {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(-30px); opacity: 0; }
}

@keyframes serena-slide-in-left {
  from { transform: translateX(-30px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes serena-slide-out-right {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(30px); opacity: 0; }
}

@keyframes serena-modal-enter {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Overlay ── */
.serena-intake-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 99999;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* ── Modal Container ── */
.serena-intake-modal {
  width: 100vw;
  height: 100vh;
  background: #fefdfb;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: serena-modal-enter 0.3s ease;
}

/* ── Header ── */
.serena-intake-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  min-height: 48px;
  flex-shrink: 0;
}

.serena-intake-btn-back {
  background: none;
  border: none;
  font-size: 15px;
  color: var(--color-primary-purple);
  cursor: pointer;
  padding: 8px 4px;
  font-family: inherit;
  min-width: 60px;
  text-align: left;
}

.serena-intake-step-indicator {
  font-size: 13px;
  color: #9ca3af;
  font-weight: 500;
}

.serena-intake-btn-close {
  background: none;
  border: none;
  font-size: 20px;
  color: #6b7280;
  cursor: pointer;
  padding: 8px;
  line-height: 1;
  min-width: 40px;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Progress Bar ── */
.serena-intake-progress {
  height: 4px;
  background: #e5e7eb;
  flex-shrink: 0;
}

.serena-intake-progress-fill {
  height: 100%;
  background: var(--gradient-primary);
  transition: width 0.4s ease;
  border-radius: 0 2px 2px 0;
}

/* ── Body (scrollable) ── */
.serena-intake-body {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 24px 20px;
  padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px));
}

/* ── Step Container ── */
.serena-intake-step {
  max-width: 420px;
  margin: 0 auto;
}

/* ── Logo ── */
.serena-intake-logo {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary-purple);
  letter-spacing: 0.5px;
  margin-bottom: 20px;
  text-transform: uppercase;
}

/* ── Title / Subtitle ── */
.serena-intake-title {
  font-size: 26px;
  font-weight: 700;
  color: #1a1a1a;
  line-height: 1.2;
  margin: 0 0 8px;
}

.serena-intake-subtitle {
  font-size: 15px;
  color: #6b7280;
  margin: 0 0 24px;
  line-height: 1.4;
}

.serena-intake-subtitle strong {
  color: var(--color-primary-purple);
}

/* ── Form Fields ── */
.serena-intake-field {
  margin-bottom: 16px;
  flex: 1;
}

.serena-intake-field-row {
  display: flex;
  gap: 12px;
}

.serena-intake-input,
.serena-intake-select {
  width: 100%;
  height: 52px;
  padding: 0 16px;
  font-size: 16px;
  font-family: inherit;
  border: 1.5px solid #d1d5db;
  border-radius: 10px;
  background: #fff;
  color: #1a1a1a;
  transition: border-color 0.2s;
  box-sizing: border-box;
  -webkit-appearance: none;
  appearance: none;
}

.serena-intake-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236b7280' d='M1.4 0L6 4.6 10.6 0 12 1.4l-6 6-6-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.serena-intake-input:focus,
.serena-intake-select:focus {
  outline: none;
  border-color: var(--color-primary-purple);
  box-shadow: 0 0 0 3px rgba(123, 63, 157, 0.1);
}

.serena-intake-input::placeholder {
  color: #9ca3af;
}

/* ── Error Messages ── */
.serena-intake-error {
  display: none;
  font-size: 13px;
  color: #dc2626;
  margin-top: 4px;
  padding-left: 2px;
}

/* ── Primary Button ── */
.serena-intake-btn-primary {
  display: block;
  width: 100%;
  height: 52px;
  background: var(--gradient-primary);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  font-family: inherit;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  margin-top: 8px;
  transition: opacity 0.2s, transform 0.1s;
  text-align: center;
  text-decoration: none;
  line-height: 52px;
}

.serena-intake-btn-primary:hover {
  opacity: 0.92;
}

.serena-intake-btn-primary:active {
  transform: scale(0.98);
}

.serena-intake-btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ── Secondary Button (returning user actions) ── */
.serena-intake-btn-secondary {
  display: block;
  width: 100%;
  height: 48px;
  background: #fff;
  color: var(--color-primary-purple);
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  border: 1.5px solid var(--color-primary-purple);
  border-radius: 12px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  line-height: 48px;
  transition: background 0.2s;
}

.serena-intake-btn-secondary:hover {
  background: #f5f0fa;
}

/* ── Trust Text ── */
.serena-intake-trust {
  text-align: center;
  margin-top: 16px;
}

.serena-intake-trust p {
  font-size: 13px;
  color: #9ca3af;
  margin: 0;
}

/* ── How It Works (Step 1) ── */
.serena-intake-how-it-works {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid #e5e7eb;
}

.serena-intake-how-it-works h4 {
  font-size: 15px;
  font-weight: 600;
  color: #374151;
  margin: 0 0 16px;
}

.serena-intake-hiw-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}

.serena-intake-hiw-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-pink) 0%, var(--color-primary-purple) 100%);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.serena-intake-hiw-step div {
  font-size: 14px;
  color: #374151;
  line-height: 1.4;
}

.serena-intake-hiw-step strong {
  color: #1a1a1a;
}

/* ── Tier Cards (Step 4) ── */
.serena-intake-tiers {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 8px;
}

.serena-intake-tier-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  border: 1.5px solid #d1d5db;
  border-radius: 12px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  background: #fff;
  position: relative;
}

.serena-intake-tier-card:hover {
  border-color: var(--color-primary-purple);
}

.serena-intake-tier-card--selected {
  border-color: var(--color-primary-purple);
  background: #faf5ff;
  box-shadow: 0 0 0 1px var(--color-primary-purple);
}

.serena-intake-tier-card--best {
  border-color: var(--color-primary-purple);
}

/* Radio dot */
.serena-intake-tier-radio {
  flex-shrink: 0;
}

.serena-intake-tier-dot {
  display: block;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid #d1d5db;
  position: relative;
  transition: border-color 0.2s;
}

.serena-intake-tier-dot--active {
  border-color: var(--color-primary-purple);
}

.serena-intake-tier-dot--active::after {
  content: '';
  position: absolute;
  top: 4px;
  left: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary-purple);
}

/* Tier info */
.serena-intake-tier-info {
  flex: 1;
}

.serena-intake-tier-name {
  font-size: 15px;
  font-weight: 600;
  color: #1a1a1a;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.serena-intake-tier-price {
  font-size: 14px;
  color: #374151;
  margin-top: 2px;
}

.serena-intake-tier-detail {
  color: #9ca3af;
  font-size: 13px;
}

/* Badges */
.serena-intake-tier-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--color-primary-pink) 0%, var(--color-primary-purple) 100%);
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.serena-intake-tier-badge--save {
  background: #059669;
}

/* ── Returning User State ── */
.serena-intake-returning {
  text-align: center;
  padding-top: 40px;
}

.serena-intake-returning .serena-intake-title {
  margin-bottom: 16px;
}

.serena-intake-returning .serena-intake-subtitle {
  max-width: 340px;
  margin-left: auto;
  margin-right: auto;
}

.serena-intake-returning-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

/* ── Desktop (>768px) ── */
@media (min-width: 769px) {
  .serena-intake-modal {
    width: 520px;
    max-height: 90vh;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  }

  .serena-intake-body {
    padding: 32px 36px;
    padding-bottom: 32px;
  }

  .serena-intake-title {
    font-size: 28px;
  }
}

/* ── Mobile safe areas ── */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .serena-intake-modal {
    padding-bottom: env(safe-area-inset-bottom);
  }
}