:root {
  --bg-1: #08090f;
  --bg-2: #12131f;
  --bg-3: #191b2c;
  --text-primary: #f4f5fb;
  --text-secondary: #9aa0c3;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-bg-strong: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-shadow: rgba(0, 0, 0, 0.55);
  --input-bg: rgba(255, 255, 255, 0.04);
  --input-border: rgba(255, 255, 255, 0.14);
  --accent-primary: #8b7dff;
  --accent-secondary: #5be3f2;
  --accent-calories: #ff7a68;
  --accent-protein: #5be3f2;
  --accent-carbs: #7ee787;
  --accent-fats: #d59bff;
  --danger: #ff5a6e;
  --success: #37d68a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  min-height: 100%;
}

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-primary);
  background:
    radial-gradient(circle at 12% 15%, rgba(139, 125, 255, 0.22), transparent 45%),
    radial-gradient(circle at 88% 10%, rgba(91, 227, 242, 0.16), transparent 45%),
    radial-gradient(circle at 50% 95%, rgba(126, 231, 135, 0.12), transparent 50%),
    /* Dark overlay gradient sits between the color accents above and the
       photo below, so every glass card keeps enough contrast to stay
       readable no matter how bright the underlying photo is. */
    linear-gradient(180deg, rgba(6, 7, 12, 0.88), rgba(8, 9, 15, 0.93) 50%, rgba(6, 7, 12, 0.9)),
    url('laza-gym.png');
  /* A single value here applies to every layer above (gradients included) --
     harmless for the gradients, and what actually pins/scales the photo. */
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  background-repeat: no-repeat;
  min-height: 100vh;
  overflow-x: hidden;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px 56px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- Header ---------- */
.brand {
  text-align: center;
  margin-bottom: 32px;
  max-width: 640px;
}

.brand .logo {
  font-size: 13px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 10px;
  font-weight: 700;
}

.brand h1 {
  font-size: clamp(1.9rem, 5vw, 3rem);
  margin: 0;
  font-weight: 800;
  background: linear-gradient(100deg, var(--accent-primary), var(--accent-secondary) 60%, var(--accent-carbs));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -1px;
}

.brand p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
  margin: 14px auto 0;
}

/* ---------- Glass card ---------- */
.glass-card {
  width: 100%;
  max-width: 640px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border-radius: 26px;
  padding: 28px;
  box-shadow: 0 8px 32px var(--glass-shadow);
  margin-bottom: 22px;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.18);
}

.glass-card h2 {
  margin: 0 0 18px;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.2px;
}

/* ---------- User ID card ---------- */
.user-card label {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.user-card input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 14px;
  padding: 13px 16px;
  font-size: 1rem;
  color: var(--text-primary);
  font-family: inherit;
  outline: none;
  transition: border 0.25s ease, box-shadow 0.25s ease;
}

.user-card input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 4px rgba(139, 125, 255, 0.18);
}

.user-card .hint {
  display: block;
  margin-top: 8px;
  font-size: 0.76rem;
  color: var(--text-secondary);
}

/* ---------- Social login ---------- */
.social-login-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.social-btn {
  flex: 1;
  min-width: 200px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  padding: 12px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.social-btn:hover { transform: translateY(-1px); }
.social-btn:active { transform: scale(0.98); }

.social-btn--google {
  background: rgba(255, 255, 255, 0.92);
  color: #1f2430;
}

.social-btn--google:hover { box-shadow: 0 8px 22px rgba(255, 255, 255, 0.18); }

.social-btn--facebook {
  background: #1877f2;
  color: #fff;
  border-color: rgba(24, 119, 242, 0.5);
}

.social-btn--facebook:hover { box-shadow: 0 8px 22px rgba(24, 119, 242, 0.35); }

.social-icon { width: 18px; height: 18px; flex-shrink: 0; }

.social-hint {
  margin-top: 10px;
}

/* ---------- Input card ---------- */
.engine-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

.engine-pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  box-shadow: 0 0 10px var(--accent-primary);
  animation: pulse 1.8s infinite ease-in-out;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

textarea {
  width: 100%;
  min-height: 140px;
  resize: vertical;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 18px;
  padding: 18px;
  font-size: 1.02rem;
  line-height: 1.6;
  color: var(--text-primary);
  font-family: inherit;
  outline: none;
  transition: border 0.25s ease, box-shadow 0.25s ease;
}

textarea::placeholder { color: var(--text-secondary); opacity: 0.75; }

textarea:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 4px rgba(139, 125, 255, 0.18);
}

.meta-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

#usageCount.usage-low { color: var(--accent-calories); font-weight: 700; }

.log-btn {
  position: relative;
  width: 100%;
  margin-top: 18px;
  border: none;
  cursor: pointer;
  padding: 16px 24px;
  font-size: 1.02rem;
  font-weight: 700;
  color: #0a0b12;
  border-radius: 16px;
  background: linear-gradient(120deg, var(--accent-primary), var(--accent-secondary), var(--accent-carbs));
  background-size: 200% 100%;
  background-position: 0% 0%;
  box-shadow: 0 10px 30px rgba(139, 125, 255, 0.35);
  transition: background-position 0.5s ease, transform 0.15s ease, box-shadow 0.25s ease;
}

.log-btn:hover:not(:disabled) {
  background-position: 100% 0%;
  box-shadow: 0 14px 36px rgba(139, 125, 255, 0.45);
}

.log-btn:active:not(:disabled) { transform: scale(0.98); }

.log-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.spinner {
  display: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(10, 11, 18, 0.4);
  border-top-color: #0a0b12;
  animation: spin 0.8s linear infinite;
  margin-left: 10px;
  vertical-align: -3px;
}

.log-btn.loading .spinner { display: inline-block; }

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

.status-panel {
  margin-top: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  border-radius: 14px;
  transition: max-height 0.35s ease, opacity 0.3s ease, padding 0.35s ease, margin 0.35s ease;
}

.status-panel.visible {
  max-height: 200px;
  opacity: 1;
  margin-top: 16px;
  padding: 14px 16px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
}

.status-panel.error { border-color: rgba(255, 90, 110, 0.5); }
.status-panel.warn { border-color: rgba(255, 190, 90, 0.5); }

.status-body {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.status-body b { color: var(--text-primary); }

/* ---------- Rings ---------- */
.rings-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.ring {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.ring-svg {
  width: 100%;
  max-width: 120px;
  aspect-ratio: 1 / 1;
  overflow: visible;
}

.ring-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 10;
}

.ring-fill {
  fill: none;
  stroke-width: 10;
  stroke-linecap: round;
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
  transition: stroke-dashoffset 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

.ring-fill--calories { stroke: var(--accent-calories); filter: drop-shadow(0 0 6px rgba(255, 122, 104, 0.55)); }
.ring-fill--protein  { stroke: var(--accent-protein);  filter: drop-shadow(0 0 6px rgba(91, 227, 242, 0.55)); }
.ring-fill--carbs    { stroke: var(--accent-carbs);    filter: drop-shadow(0 0 6px rgba(126, 231, 135, 0.55)); }
.ring-fill--fats     { stroke: var(--accent-fats);     filter: drop-shadow(0 0 6px rgba(213, 155, 255, 0.55)); }

.ring-center {
  position: absolute;
  top: 38%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  pointer-events: none;
}

.ring-value {
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1;
}

.ring-goal {
  font-size: 0.68rem;
  color: var(--text-secondary);
  margin-top: 3px;
}

.ring-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ---------- History ---------- */
.history-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 420px;
  overflow-y: auto;
}

.history-list::-webkit-scrollbar { width: 6px; }
.history-list::-webkit-scrollbar-thumb {
  background: rgba(139, 125, 255, 0.4);
  border-radius: 999px;
}

.history-empty {
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 12px 2px;
}

.history-item {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 16px;
  padding: 14px 16px;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.history-item-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 6px;
}

.history-item-food {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.history-item-index {
  font-size: 0.72rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

.history-item-analysis {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ---------- Toasts ---------- */
.toast-container {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  width: 100%;
  max-width: 420px;
  padding: 0 20px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: var(--text-primary);
  padding: 14px 18px;
  border-radius: 14px;
  box-shadow: 0 10px 30px var(--glass-shadow);
  font-size: 0.9rem;
  font-weight: 600;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: auto;
}

.toast.show { opacity: 1; transform: translateY(0); }
.toast-error { border-left: 4px solid var(--danger); }
.toast-success { border-left: 4px solid var(--success); }
.toast-icon { font-size: 1.05rem; flex-shrink: 0; }
.toast-msg { line-height: 1.4; }

footer {
  margin-top: 12px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.8rem;
}

/* ---------- Paywall overlay ---------- */
.paywall-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(4, 5, 9, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.paywall-overlay.visible { display: flex; }

.paywall-card {
  width: 100%;
  max-width: 420px;
  text-align: center;
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(26px);
  -webkit-backdrop-filter: blur(26px);
  border-radius: 26px;
  padding: 32px 28px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.paywall-badge {
  display: inline-block;
  background: rgba(255, 190, 90, 0.16);
  color: #ffbe5a;
  border: 1px solid rgba(255, 190, 90, 0.4);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.paywall-card h2 {
  margin: 0 0 10px;
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.3px;
}

.paywall-card p {
  margin: 0 0 20px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.5;
}

.paywall-card p strong { color: var(--text-primary); }

.paywall-price {
  margin-bottom: 22px;
}

.paywall-price-amount {
  font-size: 2.4rem;
  font-weight: 800;
  background: linear-gradient(100deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.paywall-price-period {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-left: 4px;
}

.paywall-upgrade-btn {
  position: relative;
  width: 100%;
  border: none;
  cursor: pointer;
  padding: 15px 24px;
  font-size: 0.98rem;
  font-weight: 700;
  color: #0a0b12;
  border-radius: 16px;
  background: linear-gradient(120deg, var(--accent-primary), var(--accent-secondary), var(--accent-carbs));
  background-size: 200% 100%;
  background-position: 0% 0%;
  box-shadow: 0 10px 30px rgba(139, 125, 255, 0.35);
  transition: background-position 0.5s ease, transform 0.15s ease;
}

.paywall-upgrade-btn:hover:not(:disabled) { background-position: 100% 0%; }
.paywall-upgrade-btn:active:not(:disabled) { transform: scale(0.98); }
.paywall-upgrade-btn:disabled { opacity: 0.65; cursor: not-allowed; }
.paywall-upgrade-btn.loading .spinner { display: inline-block; border-color: rgba(10, 11, 18, 0.4); border-top-color: #0a0b12; }

.paywall-fineprint {
  margin-top: 12px;
  font-size: 0.72rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.paywall-dismiss-btn {
  margin-top: 16px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.84rem;
  font-family: inherit;
  cursor: pointer;
  text-decoration: underline;
}

.paywall-dismiss-btn:hover { color: var(--text-primary); }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .glass-card { padding: 20px; border-radius: 22px; }
  .rings-grid { grid-template-columns: repeat(2, 1fr); gap: 22px 14px; }
  .ring-value { font-size: 1rem; }
}