* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: #f5f6f8;
  color: #1c1c1e;
  min-height: 100vh;
}

/* --- auth page --- */

body.auth {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.auth-card {
  width: 100%;
  max-width: 360px;
  background: #fff;
  border-radius: 12px;
  padding: 24px 20px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.auth-card h1 {
  margin: 0 0 16px;
  font-size: 1.4rem;
  text-align: center;
}

.auth-card label {
  display: block;
  margin-bottom: 14px;
  font-size: 0.9rem;
  color: #555;
}

.auth-card input {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid #d1d5db;
  border-radius: 8px;
}

.auth-card input:focus {
  outline: 2px solid #3478f6;
  border-color: #3478f6;
}

.auth-card button {
  width: 100%;
  padding: 12px;
  font-size: 1rem;
  color: #fff;
  background: #3478f6;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.auth-card button:active {
  background: #2a63d0;
}

.error {
  margin: 0 0 12px;
  font-size: 0.9rem;
  color: #c0392b;
}

/* --- app shell --- */

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
}

.app-header h1 {
  margin: 0;
  font-size: 1.15rem;
}

button.link {
  padding: 8px 12px;
  font-size: 0.95rem;
  color: #3478f6;
  background: none;
  border: none;
  cursor: pointer;
}

.app-main {
  max-width: 560px;
  margin: 0 auto;
  padding: 16px 16px calc(84px + env(safe-area-inset-bottom));
}

.stub {
  color: #8a8f98;
}

/* --- tabs & bottom navigation (EPIC-02) --- */

.greeting {
  margin: 0 0 12px;
  font-size: 0.85rem;
  color: #8a8f98;
}

.tabbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  max-width: 560px;
  margin: 0 auto;
  background: #fff;
  border-top: 1px solid #e5e7eb;
  padding-bottom: env(safe-area-inset-bottom);
  z-index: 10;
}

.tab-btn {
  flex: 1;
  padding: 10px 4px 8px;
  font-size: 0.8rem;
  color: #8a8f98;
  background: none;
  border: none;
  cursor: pointer;
}

.tab-btn.active {
  color: #3478f6;
  font-weight: 600;
}

/* --- cards & forms (EPIC-02) --- */

.card {
  background: #fff;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.card h2 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.card input {
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  background: #fff;
}

.card input:focus {
  outline: 2px solid #3478f6;
  border-color: #3478f6;
}

.card label {
  display: block;
  margin-bottom: 12px;
  font-size: 0.9rem;
  color: #555;
}

.card label input {
  display: block;
  width: 100%;
  margin-top: 6px;
}

.btn {
  padding: 12px 16px;
  font-size: 1rem;
  color: #fff;
  background: #3478f6;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.btn:active {
  background: #2a63d0;
}

.weight-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.weight-row input {
  width: 110px;
  font-size: 1.3rem;
  text-align: center;
}

.weight-row .unit {
  font-size: 1rem;
  color: #555;
}

.form-status {
  margin: 10px 0 0;
  font-size: 0.9rem;
  color: #8a8f98;
}

.form-status.error {
  color: #c0392b;
}

.state {
  color: #8a8f98;
}

.stat-line {
  margin: 6px 0;
  font-size: 0.95rem;
}

.stat-line strong {
  font-size: 1.05rem;
}

/* --- insight cards: plateau & checkpoints (EPIC-06) --- */

.insight {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 14px;
  margin-bottom: 16px;
  font-size: 0.95rem;
  background: #eef3fe;
  border: 1px solid rgba(52, 120, 246, 0.45);
  border-radius: 12px;
}

.insight-text {
  flex: 1 1 auto;
  min-width: 150px;
}

.insight-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.insight-actions .btn {
  padding: 8px 14px;
  font-size: 0.9rem;
  white-space: nowrap;
}

.insight-close {
  padding: 6px 10px;
  font-size: 0.95rem;
  color: #8a8f98;
  background: none;
  border: none;
  cursor: pointer;
}

.insight-close:active {
  color: #c0392b;
}

/* --- food & workout diary (EPIC-03) --- */

.slot {
  margin-bottom: 18px;
}

.slot:last-child {
  margin-bottom: 0;
}

.slot h3 {
  margin: 0 0 8px;
  font-size: 0.9rem;
  color: #555;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.chip {
  padding: 8px 13px;
  font-size: 0.9rem;
  color: #3478f6;
  background: #eef3fe;
  border: 1px solid rgba(52, 120, 246, 0.35);
  border-radius: 999px;
  cursor: pointer;
}

.chip:active {
  background: #dbe7fd;
}

.entry-list {
  list-style: none;
  margin: 0 0 10px;
  padding: 0;
}

.entry-list li {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px 0;
  border-bottom: 1px solid #eef0f3;
  font-size: 0.95rem;
}

.entry-list li:last-child {
  border-bottom: none;
}

.entry-kcal {
  font-size: 0.85rem;
  color: #8a8f98;
  white-space: nowrap;
}

.flag {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

.flag-sweets {
  color: #b03a2e;
  background: #fdecea;
}

.flag-flour {
  color: #a86800;
  background: #fbf1dd;
}

.entry-del {
  margin-left: auto;
  padding: 2px 10px;
  font-size: 0.95rem;
  color: #8a8f98;
  background: none;
  border: none;
  cursor: pointer;
}

.entry-del:active {
  color: #c0392b;
}

.free-entry {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.free-entry input[type="text"] {
  flex: 1 1 100%;
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  background: #fff;
}

.free-entry input.invalid,
.free-entry input:focus.invalid {
  outline: 2px solid #c0392b;
  border-color: #c0392b;
}

.free-entry .check {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  width: auto;
  margin: 0;
  font-size: 0.85rem;
}

.free-entry .check input {
  display: inline-block;
  width: auto;
  margin: 0;
}

.free-entry .btn {
  padding: 8px 14px;
  font-size: 0.9rem;
  margin-left: auto;
}

/* meal templates on the Profile tab */

.card select {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  background: #fff;
}

.card select:focus {
  outline: 2px solid #3478f6;
  border-color: #3478f6;
}

/* --- onboarding & profile form (EPIC-07) --- */

.auth-card select,
.auth-card textarea,
.card textarea {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  background: #fff;
  font-family: inherit;
}

.auth-card select:focus,
.card textarea:focus {
  outline: 2px solid #3478f6;
  border-color: #3478f6;
}

.auth-card textarea {
  resize: vertical;
}

.btn.secondary {
  color: #1c1c1e;
  background: #eef0f3;
}

.btn.secondary:active {
  background: #dfe3e8;
}

.onboard-card {
  max-width: 420px;
}

.onboard-progress {
  margin: -6px 0 12px;
  font-size: 0.85rem;
  color: #8a8f98;
}

.onboard-step h2 {
  margin: 0 0 12px;
  font-size: 1.1rem;
}

.onboard-hint {
  margin: 0 0 12px;
  font-size: 0.85rem;
  color: #8a8f98;
}

.field-row {
  display: flex;
  gap: 10px;
}

.field-row label {
  flex: 1;
}

.onboard-nav {
  display: flex;
  gap: 10px;
  margin-top: 4px;
}

.onboard-nav .btn {
  flex: 1;
}

.onboard-summary {
  margin: 0 0 12px;
  font-size: 0.95rem;
}

.onboard-summary strong {
  font-size: 1rem;
}

.chip-add {
  margin-bottom: 10px;
}

/* --- chat tab (EPIC-04) --- */

.chat-card {
  display: flex;
  flex-direction: column;
  /* header + greeting + main paddings + tabbar allowance */
  height: calc(100dvh - 225px - env(safe-area-inset-bottom));
  min-height: 360px;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 2px 2px 12px;
}

.msg {
  max-width: 85%;
  padding: 9px 13px;
  border-radius: 14px;
  font-size: 0.95rem;
  line-height: 1.35;
  white-space: pre-wrap;
  overflow-wrap: break-word;
}

.msg-user {
  align-self: flex-end;
  background: #3478f6;
  color: #fff;
  border-bottom-right-radius: 4px;
}

.msg-assistant {
  align-self: flex-start;
  background: #eef0f3;
  border-bottom-left-radius: 4px;
}

.chat-form {
  display: flex;
  gap: 8px;
  align-items: center;
  border-top: 1px solid #eef0f3;
  padding-top: 12px;
}

.chat-form input {
  flex: 1;
  min-width: 0;
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  background: #fff;
}

.chat-form input:focus {
  outline: 2px solid #3478f6;
  border-color: #3478f6;
}

.chat-form .btn {
  white-space: nowrap;
}

.chat-form input:disabled,
.chat-form button:disabled {
  opacity: 0.55;
}

/* markdown inside assistant bubbles */

.msg-assistant.md {
  white-space: normal;
}

.msg-assistant.md > *:first-child {
  margin-top: 0;
}

.msg-assistant.md > *:last-child {
  margin-bottom: 0;
}

.msg-assistant.md p {
  margin: 0.35em 0;
}

.msg-assistant.md h1,
.msg-assistant.md h2,
.msg-assistant.md h3,
.msg-assistant.md h4,
.msg-assistant.md h5,
.msg-assistant.md h6 {
  margin: 0.55em 0 0.25em;
  font-size: 0.98rem;
  line-height: 1.3;
}

.msg-assistant.md ul,
.msg-assistant.md ol {
  margin: 0.35em 0;
  padding-left: 1.3em;
}

.msg-assistant.md li {
  margin: 0.15em 0;
}

.msg-assistant.md code {
  padding: 1px 5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: #e3e7ec;
  border-radius: 4px;
}

.msg-assistant.md pre {
  margin: 0.45em 0;
  padding: 8px 10px;
  background: #f2f4f7;
  border: 1px solid #e3e7ec;
  border-radius: 8px;
  overflow-x: auto;
}

.msg-assistant.md pre code {
  padding: 0;
  background: none;
}

.msg-assistant.md table {
  display: block;
  max-width: 100%;
  margin: 0.45em 0;
  border-collapse: collapse;
  overflow-x: auto;
}

.msg-assistant.md th,
.msg-assistant.md td {
  padding: 3px 8px;
  border: 1px solid #d9dee5;
  font-size: 0.9em;
  text-align: left;
}

.msg-assistant.md a {
  color: #3478f6;
}

.msg-assistant.md blockquote {
  margin: 0.35em 0;
  padding-left: 0.7em;
  border-left: 3px solid #cbd2da;
  color: #555;
}

.msg-assistant.md hr {
  margin: 0.6em 0;
  border: none;
  border-top: 1px solid #dfe3e8;
}