:root {
  --spruce: #2C4438;
  --spruce-dark: #1E3027;
  --tidal: #3B5C6B;
  --slate: #5C737B;
  --sage: #7A8F7D;
  --mist: #C7D3CE;
  --chalk: #F6F4EF;
  --linen: #EAE6DF;
  --hull: #1F292B;
  --danger: #8C2D2D;
  --danger-bg: #F9EBEB;
  --warn-bg: #FBF4E4;
  --warn-ink: #5E4312;
  --radius-lg: 16px;
  --radius-md: 12px;
  --shadow-soft: 0 4px 16px rgba(31, 41, 43, 0.08);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background-color: var(--chalk);
  color: var(--hull);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 18px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  height: 100%;
}

.app-container {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  max-width: 820px;
  margin: 0 auto;
  background-color: var(--chalk);
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

/* Header */
.top-header {
  background-color: var(--spruce);
  color: var(--chalk);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-badge {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background-color: var(--mist);
  color: var(--spruce);
  font-weight: 800;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
}

.brand-subtitle {
  font-size: 0.78rem;
  color: var(--mist);
  margin: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* Accessible Buttons */
button {
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: var(--radius-md);
  min-height: 46px;
  padding: 8px 14px;
  border: 2px solid transparent;
  transition: background-color 0.15s ease, transform 0.08s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid var(--tidal);
  outline-offset: 2px;
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--spruce);
  color: var(--chalk);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--spruce-dark);
}

.btn-secondary {
  background-color: var(--linen);
  color: var(--hull);
  border-color: var(--slate);
}

.btn-header {
  background-color: rgba(246, 244, 239, 0.14);
  color: var(--chalk);
  border: 1px solid rgba(246, 244, 239, 0.35);
  min-height: 42px;
  padding: 6px 12px;
  font-size: 0.88rem;
}

.btn-header-highlight {
  background-color: var(--mist);
  color: var(--spruce-dark);
  border: 1px solid var(--mist);
  font-weight: 700;
  min-height: 42px;
  padding: 6px 12px;
  font-size: 0.88rem;
}

.btn-danger {
  background-color: var(--danger-bg);
  color: var(--danger);
  border-color: var(--danger);
}

/* Status Banners */
.banner {
  padding: 12px 16px;
  font-size: 0.92rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-shrink: 0;
}

.banner-offline {
  background-color: var(--warn-bg);
  color: var(--warn-ink);
  border-bottom: 2px solid #D9B978;
}

.banner-error {
  background-color: var(--danger-bg);
  color: var(--danger);
  border-bottom: 2px solid var(--danger);
}

.hidden {
  display: none !important;
}

/* Auth / Onboarding View */
.view-panel {
  flex: 1;
  overflow-y: auto;
  padding: 20px 16px;
}

.auth-card {
  background-color: #FFFFFF;
  border: 2px solid var(--linen);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  box-shadow: var(--shadow-soft);
  max-width: 560px;
  margin: 12px auto;
}

.auth-card h2 {
  margin-top: 0;
  color: var(--spruce);
  font-size: 1.35rem;
}

.field-group {
  margin-bottom: 16px;
}

.field-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--hull);
}

.field-hint {
  font-size: 0.85rem;
  color: var(--slate);
  margin-top: 4px;
}

input[type="text"],
input[type="password"],
textarea,
select {
  width: 100%;
  font-family: inherit;
  font-size: 1rem;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 2px solid var(--slate);
  background-color: #FFFFFF;
  color: var(--hull);
}

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background-color: var(--chalk);
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--mist);
  margin-bottom: 16px;
}

.checkbox-row input[type="checkbox"] {
  width: 24px;
  height: 24px;
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--spruce);
}

/* Conversation Layout */
.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.goal-strip {
  background-color: var(--linen);
  padding: 10px 16px;
  border-bottom: 1px solid var(--mist);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.92rem;
}

.messages-list {
  flex: 1;
  overflow-y: auto;
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.msg-bubble {
  max-width: 88%;
  padding: 14px 16px;
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
  word-wrap: break-word;
  white-space: pre-wrap;
}

.msg-assistant {
  align-self: flex-start;
  background-color: #FFFFFF;
  border: 1px solid var(--linen);
  color: var(--hull);
}

.msg-user {
  align-self: flex-end;
  background-color: var(--spruce);
  color: var(--chalk);
}

.msg-guide {
  align-self: flex-start;
  background-color: #EBF3F0;
  border: 2px solid var(--tidal);
  color: var(--hull);
}

.msg-meta {
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 4px;
  opacity: 0.85;
}

/* Pending Memory & Goal Suggestion Cards */
.proposals-tray {
  padding: 10px 16px;
  background-color: var(--linen);
  border-top: 2px solid var(--mist);
  max-height: 36vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.proposal-card {
  background-color: #FFFFFF;
  border: 2px solid var(--tidal);
  border-radius: var(--radius-md);
  padding: 12px 14px;
}

.proposal-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--tidal);
  margin: 0 0 4px 0;
}

.proposal-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

/* Composer */
.composer-bar {
  background-color: #FFFFFF;
  border-top: 2px solid var(--linen);
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-shrink: 0;
}

.composer-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.composer-row textarea {
  flex: 1;
  min-height: 52px;
  max-height: 140px;
  resize: vertical;
  padding: 12px;
}

.btn-mic {
  background-color: var(--linen);
  color: var(--spruce);
  border: 2px solid var(--spruce);
  min-width: 52px;
  min-height: 52px;
  padding: 0 12px;
}

.btn-mic.listening {
  background-color: var(--danger);
  color: #FFFFFF;
  border-color: var(--danger);
}

.voice-status {
  font-size: 0.84rem;
  color: var(--tidal);
  font-weight: 600;
}

/* Modal / Drawer Overlay */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(31, 41, 43, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 100;
}

.modal-panel {
  background-color: var(--chalk);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 620px;
  max-height: 90dvh;
  overflow-y: auto;
  padding: 22px 20px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.22);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px solid var(--linen);
  padding-bottom: 12px;
  margin-bottom: 16px;
}

.modal-header h3 {
  margin: 0;
  color: var(--spruce);
  font-size: 1.25rem;
}

.card-item {
  background-color: #FFFFFF;
  border: 1px solid var(--mist);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 12px;
}

.tag-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  background-color: var(--mist);
  color: var(--spruce-dark);
  text-transform: uppercase;
}

@media (max-width: 600px) {
  .brand-subtitle {
    display: none;
  }
  .msg-bubble {
    max-width: 94%;
  }
}