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

:root {
  --platinum: #E8E3DE;
  --white:    #FFFFFF;
  --firebrick: #B43F2C;
  --firebrick-light: #C94F3A;
  --black:    #242423;
  --muted:    #9B9590;
  --border:   rgba(36, 36, 35, 0.1);
  --shadow:   0 8px 32px rgba(36, 36, 35, 0.12);
}

html, body {
  height: 100%;
  background: var(--platinum);
  color: var(--black);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

/* ── Screens ── */

.screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
}

.hidden { display: none !important; }

/* ── Center card (login / pending) ── */

.center-card {
  margin: auto;
  padding: 2.5rem 2rem;
  width: min(400px, 90vw);
  background: var(--white);
  border-radius: 2rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}

.app-logo {
  font-size: 2.5rem;
  line-height: 1;
}

.center-card h1 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--black);
}

.center-card p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.pending-icon {
  font-size: 2.5rem;
  line-height: 1;
}

/* ID block on pending screen */
.id-block {
  width: 100%;
  background: var(--platinum);
  border-radius: 0.875rem;
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.2rem;
}

.id-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.id-value {
  font-family: monospace;
  font-size: 1rem;
  font-weight: 600;
  color: var(--black);
  user-select: all;
  word-break: break-all;
}

/* ── Buttons ── */

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0.95rem;
  background: var(--firebrick);
  color: var(--white);
  border: none;
  border-radius: 1rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}

.btn-primary:active {
  background: var(--firebrick-light);
  transform: scale(0.98);
}

.btn-secondary {
  width: 100%;
  padding: 0.85rem;
  background: transparent;
  color: var(--muted);
  border: 1.5px solid var(--border);
  border-radius: 1rem;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.btn-secondary:active {
  color: var(--black);
  border-color: var(--black);
}

/* ── Main screen ── */

#main-screen {
  background: var(--platinum);
}

/* Camera */
.camera-wrapper {
  flex: 1;
  position: relative;
  overflow: hidden;
  margin: 1rem 1rem 0.75rem;
  border-radius: 1.5rem;
  background: #000;
}

#video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Loading */
.loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 500;
}

.spinner {
  width: 42px;
  height: 42px;
  border: 3px solid rgba(255,255,255,0.2);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Bottom bar */
.bottom-bar {
  background: var(--platinum);
  padding: 1.25rem 2.5rem calc(1.5rem + env(safe-area-inset-bottom));
  flex-shrink: 0;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: center;
  justify-items: center;
}

.side-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: none;
  color: var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.15s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}

.side-btn:active {
  opacity: 1;
  transform: scale(0.9);
}

.scan-btn {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: var(--firebrick);
  /* outer ring: platinum gap + dark border */
  box-shadow: 0 0 0 4px var(--platinum), 0 0 0 6px var(--black);
  border: none;
  cursor: pointer;
  transition: transform 0.12s, background 0.12s;
  -webkit-tap-highlight-color: transparent;
}

.scan-btn:active {
  background: var(--firebrick-light);
  transform: scale(0.92);
}

.scan-btn:disabled {
  opacity: 0.4;
  cursor: default;
  transform: none;
}

/* ── Result sheet ── */

.result-sheet {
  position: absolute;
  inset: 0;
  background: var(--white);
  border-radius: 2rem 2rem 0 0;
  padding: 1rem 1.5rem calc(1.5rem + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  overflow-y: auto;
  animation: slideUp 0.3s cubic-bezier(0.32, 0.72, 0, 1);
  top: 6%;
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

.sheet-footer {
  margin-top: auto;
  padding-top: 1.5rem;
}

.sheet-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--firebrick);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}

.sheet-close-btn:active {
  background: var(--firebrick-light);
  transform: scale(0.9);
}

.sheet-handle {
  width: 36px;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin: 0 auto 0.5rem;
  flex-shrink: 0;
}

.food-name {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--black);
  line-height: 1.2;
}

/* Macros grid */
.macros-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.macro-card {
  background: var(--platinum);
  border-radius: 1rem;
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.macro-card.macro-cal {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  background: var(--firebrick);
}

.macro-cal .macro-value {
  color: var(--white);
  font-size: 2rem;
}

.macro-cal .macro-label {
  color: rgba(255,255,255,0.75);
  font-size: 0.85rem;
}

.macro-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--black);
  letter-spacing: -0.01em;
}

.macro-label {
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Divider */
.sheet-divider {
  height: 1px;
  background: var(--border);
  flex-shrink: 0;
}

/* Sheet helpers */
.sheet-text {
  font-size: 0.93rem;
  color: var(--muted);
  line-height: 1.6;
}

.sheet-text strong {
  color: var(--black);
  font-weight: 600;
}

.sheet-buy-block {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

/* User info */
.user-info {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.user-info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.user-info-label {
  font-size: 0.85rem;
  color: var(--muted);
}

.user-info-value {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--black);
}

.mono {
  font-family: monospace;
  font-size: 0.8rem;
}