/* ============================================
   CALORIE TRACKER — Design System
   Dark Neon Glassmorphism Theme (Upgrade)
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&display=swap');

/* --- CSS Variables --- */
:root {
  --bg-primary: #06060c;
  --bg-secondary: #0e0e1b;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-glass-strong: rgba(255, 255, 255, 0.08);
  --bg-input: rgba(255, 255, 255, 0.05);

  --text-primary: #f8f9fa;
  --text-secondary: #a5a5c5;
  --text-muted: #5e5e8e;
  --text-accent: #00e676;

  --accent-green: #00f076;
  --accent-green-dim: rgba(0, 240, 118, 0.12);
  --accent-green-glow: rgba(0, 240, 118, 0.3);
  
  --accent-purple: #8c52ff;
  --accent-purple-dim: rgba(140, 82, 255, 0.12);
  --accent-purple-glow: rgba(140, 82, 255, 0.3);
  
  --accent-cyan: #00f0ff;
  --accent-cyan-dim: rgba(0, 240, 255, 0.12);
  --accent-cyan-glow: rgba(0, 240, 255, 0.3);

  --accent-orange: #ff9100;
  --accent-orange-dim: rgba(255, 145, 0, 0.12);
  --accent-blue: #3d8bff;
  --accent-blue-dim: rgba(61, 139, 255, 0.12);
  --accent-red: #ff4a5a;
  --accent-red-dim: rgba(255, 74, 90, 0.12);
  --accent-yellow: #ffdb3d;
  --accent-yellow-dim: rgba(255, 219, 61, 0.12);

  --border-subtle: rgba(255, 255, 255, 0.04);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(0, 240, 118, 0.5);

  --shadow-sm: 0 4px 10px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 50px rgba(0, 0, 0, 0.6);
  --shadow-glow-green: 0 0 25px rgba(0, 240, 118, 0.25);
  --shadow-glow-purple: 0 0 25px rgba(140, 82, 255, 0.25);
  --shadow-glow-cyan: 0 0 25px rgba(0, 240, 255, 0.25);

  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --transition-fast: 0.12s ease;
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 480px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Ambient background blobs for neon glow */
body::before,
body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.12;
  pointer-events: none;
  z-index: 0;
  will-change: transform;
}

body::before {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-green) 0%, transparent 80%);
  top: -150px;
  right: -100px;
  animation: floatBlob1 15s infinite alternate ease-in-out;
}

body::after {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, var(--accent-purple) 0%, transparent 80%);
  bottom: -100px;
  left: -150px;
  animation: floatBlob2 18s infinite alternate ease-in-out;
}

@keyframes floatBlob1 {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-50px, 50px) scale(1.1); }
}

@keyframes floatBlob2 {
  0% { transform: translate(0, 0) scale(1.1); }
  100% { transform: translate(50px, -50px) scale(0.9); }
}

/* --- App Container --- */
#app {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 0 18px;
  padding-bottom: 96px;
}

/* --- Views --- */
.view {
  display: none;
  animation: viewFadeIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.view.active {
  display: block;
}

@keyframes viewFadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Typography --- */
h1 { font-size: 2rem; font-weight: 800; letter-spacing: -0.02em; line-height: 1.2; }
h2 { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.01em; }
h3 { font-size: 1.2rem; font-weight: 600; }
.text-sm { font-size: 0.88rem; }
.text-xs { font-size: 0.78rem; }
.text-muted { color: var(--text-secondary); }
.text-accent { color: var(--accent-green); }
.text-center { text-align: center; }

/* --- Glass Card --- */
.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
}

.glass-card:hover {
  background: var(--bg-glass-strong);
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.glass-card--no-hover:hover {
  background: var(--bg-glass);
  border-color: var(--border-glass);
  transform: none;
  box-shadow: var(--shadow-sm);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  box-shadow: var(--shadow-sm);
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(255,255,255,0), rgba(255,255,255,0.15), rgba(255,255,255,0));
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.btn:hover::after {
  transform: translateX(100%);
}

.btn:active {
  transform: scale(0.96) !important;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent-green), #00ba5a);
  color: #06060c;
  box-shadow: var(--shadow-glow-green);
}

.btn--primary:hover {
  box-shadow: 0 0 35px rgba(0, 240, 118, 0.45);
  transform: translateY(-2px);
}

.btn--secondary {
  background: var(--bg-glass-strong);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
}

.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.btn--purple {
  background: linear-gradient(135deg, var(--accent-purple), #7026ff);
  color: white;
  box-shadow: var(--shadow-glow-purple);
}

.btn--purple:hover {
  box-shadow: 0 0 35px rgba(140, 82, 255, 0.45);
  transform: translateY(-2px);
}

.btn--cyan {
  background: linear-gradient(135deg, var(--accent-cyan), #00c0ff);
  color: #06060c;
  box-shadow: var(--shadow-glow-cyan);
}

.btn--cyan:hover {
  box-shadow: 0 0 35px rgba(0, 240, 255, 0.45);
  transform: translateY(-2px);
}

.btn--danger {
  background: var(--accent-red-dim);
  color: var(--accent-red);
  border: 1px solid rgba(255, 74, 90, 0.25);
}

.btn--danger:hover {
  background: rgba(255, 74, 90, 0.2);
  transform: translateY(-1px);
}

.btn--sm {
  padding: 10px 20px;
  font-size: 0.88rem;
}

.btn--lg {
  padding: 16px 32px;
  font-size: 1.05rem;
}

.btn--full {
  width: 100%;
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* --- Inputs --- */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.input-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.input {
  background: var(--bg-input);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-family: var(--font-main);
  font-size: 1rem;
  color: var(--text-primary);
  transition: all var(--transition-base);
  outline: none;
  width: 100%;
}

.input:focus {
  border-color: var(--border-focus);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 4px rgba(0, 240, 118, 0.12);
}

.input::placeholder {
  color: var(--text-muted);
}

textarea.input {
  resize: vertical;
  min-height: 100px;
  line-height: 1.6;
}

/* --- Header --- */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0 16px;
}

.header__title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header__logo {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-green), var(--accent-purple));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: 0 4px 15px rgba(140, 82, 255, 0.3);
}

.header__username {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-glass-strong);
  padding: 5px 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-glass);
}

/* --- Date Navigator --- */
.date-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 14px 0;
  margin-bottom: 8px;
}

.date-nav__btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: 1.3rem;
  font-weight: bold;
}

.date-nav__btn:hover {
  background: var(--bg-glass-strong);
  border-color: rgba(255,255,255,0.2);
  transform: scale(1.05);
}

.date-nav__btn:active {
  transform: scale(0.92);
}

.date-nav__label {
  font-size: 1.15rem;
  font-weight: 700;
  min-width: 190px;
  text-align: center;
  cursor: pointer;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.date-nav__label:hover {
  background: var(--bg-glass);
  color: var(--accent-green);
}

.date-nav__today {
  font-size: 0.8rem;
  color: var(--accent-cyan);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* --- Calorie Ring --- */
.calorie-ring {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px 0;
  width: 220px;
  height: 220px;
  margin: 16px auto 28px;
}

.calorie-ring__svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 220px;
  height: 220px;
  transform: rotate(-90deg);
  z-index: 1;
}

.calorie-ring__bg {
  fill: none;
  stroke: var(--border-subtle);
  stroke-width: 11;
}

.calorie-ring__progress {
  fill: none;
  stroke: url(#ringGradient);
  stroke-width: 11;
  stroke-linecap: round;
  stroke-dasharray: 502;
  stroke-dashoffset: 502;
  transition: stroke-dashoffset 1.2s cubic-bezier(0.1, 0.8, 0.2, 1);
}

.calorie-ring__progress--over {
  stroke: var(--accent-red) !important;
}

.calorie-ring__center {
  position: relative;
  text-align: center;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.calorie-ring__value {
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent-green), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 10px rgba(0, 240, 118, 0.15));
}

.calorie-ring__label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 4px;
}

.calorie-ring__remaining {
  font-size: 0.9rem;
  font-weight: 700;
  margin-top: 8px;
  letter-spacing: -0.01em;
}

.calorie-ring__remaining--over {
  color: var(--accent-red);
  text-shadow: 0 0 10px rgba(255, 74, 90, 0.2);
}

.calorie-ring__remaining--under {
  color: var(--accent-green);
  text-shadow: 0 0 10px rgba(0, 240, 118, 0.2);
}

/* --- Macro Bars --- */
.macro-bars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}

.macro-bar {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 16px 12px;
  text-align: center;
  transition: all var(--transition-base);
}

.macro-bar:hover {
  transform: translateY(-2px);
  background: var(--bg-glass-strong);
}

.macro-bar__icon {
  font-size: 1.4rem;
  margin-bottom: 6px;
}

.macro-bar__label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  margin-bottom: 8px;
}

.macro-bar__value {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 2px;
}

.macro-bar__goal {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 10px;
}

.macro-bar__track {
  height: 5px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
  overflow: hidden;
}

.macro-bar__fill {
  height: 100%;
  border-radius: 3px;
  transition: width 1s cubic-bezier(0.1, 0.8, 0.2, 1);
  min-width: 0;
}

.macro-bar__fill--protein { background: linear-gradient(90deg, #1e70ff, var(--accent-blue)); box-shadow: 0 0 10px rgba(61, 139, 255, 0.4); }
.macro-bar__fill--carbs { background: linear-gradient(90deg, #e07000, var(--accent-orange)); box-shadow: 0 0 10px rgba(255, 145, 0, 0.4); }
.macro-bar__fill--fat { background: linear-gradient(90deg, #e0be00, var(--accent-yellow)); box-shadow: 0 0 10px rgba(255, 219, 61, 0.4); }

/* --- Action Buttons (Add Meal) --- */
.action-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 22px 10px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.88rem;
  font-weight: 600;
  -webkit-tap-highlight-color: transparent;
  box-shadow: var(--shadow-sm);
}

.action-btn:hover {
  background: var(--bg-glass-strong);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 255, 255, 0.15);
}

.action-btn:active {
  transform: scale(0.96);
}

.action-btn__icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  transition: all var(--transition-base);
}

.action-btn__icon--text {
  background: var(--accent-green-dim);
  color: var(--accent-green);
  box-shadow: 0 4px 15px rgba(0, 240, 118, 0.15);
}

.action-btn:hover .action-btn__icon--text {
  box-shadow: 0 4px 20px rgba(0, 240, 118, 0.3);
  transform: scale(1.05);
}

.action-btn__icon--photo {
  background: var(--accent-purple-dim);
  color: var(--accent-purple);
  box-shadow: 0 4px 15px rgba(140, 82, 255, 0.15);
}

.action-btn:hover .action-btn__icon--photo {
  box-shadow: 0 4px 20px rgba(140, 82, 255, 0.3);
  transform: scale(1.05);
}

.action-btn__icon--manual {
  background: var(--accent-cyan-dim);
  color: var(--accent-cyan);
  box-shadow: 0 4px 15px rgba(0, 240, 255, 0.15);
}

.action-btn:hover .action-btn__icon--manual {
  box-shadow: 0 4px 20px rgba(0, 240, 255, 0.3);
  transform: scale(1.05);
}

/* --- Meals List --- */
.meals-section {
  margin-bottom: 24px;
}

.meals-section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.meals-section__title {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.meals-section__count {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-cyan);
  background: var(--accent-cyan-dim);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 240, 255, 0.15);
}

.meal-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 10px;
  transition: all var(--transition-base);
  animation: mealSlideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.meal-card:hover {
  background: var(--bg-glass-strong);
  border-color: rgba(255,255,255,0.12);
  transform: translateX(4px);
}

@keyframes mealSlideIn {
  from { opacity: 0; transform: translateX(-16px); }
  to { opacity: 1; transform: translateX(0); }
}

.meal-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.meal-card__time {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.meal-card__time-icon {
  font-size: 1rem;
}

.meal-card__calories {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--accent-green);
  text-shadow: 0 0 10px rgba(0, 240, 118, 0.1);
}

.meal-card__items {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.meal-card__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
  padding: 4px 0;
}

.meal-card__item-name {
  color: var(--text-primary);
  font-weight: 500;
  flex: 1;
}

.meal-card__item-amount {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin: 0 14px;
}

.meal-card__item-cal {
  color: var(--text-secondary);
  font-weight: 600;
  white-space: nowrap;
}

.meal-card__footer {
  display: flex;
  justify-content: flex-end;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--border-subtle);
}

.meal-card__delete {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-main);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 6px;
}

.meal-card__delete:hover {
  color: var(--accent-red);
  background: var(--accent-red-dim);
}

.meals-empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
  border: 1px dashed var(--border-glass);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.01);
}

.meals-empty__icon {
  font-size: 3.5rem;
  margin-bottom: 16px;
  opacity: 0.35;
}

.meals-empty__text {
  font-size: 0.95rem;
  font-weight: 500;
}

/* --- Bottom Navigation --- */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(6, 6, 12, 0.9);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-top: 1px solid var(--border-glass);
  padding: 6px 0;
  padding-bottom: max(6px, env(safe-area-inset-bottom));
}

.bottom-nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  width: 100%;
  justify-items: center;
  align-items: center;
}

.bottom-nav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 0;
  width: 100%;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-main);
  font-size: 0.62rem;
  font-weight: 600;
  -webkit-tap-highlight-color: transparent;
  text-align: center;
  white-space: nowrap;
}

.bottom-nav__item.active {
  color: var(--accent-green);
}

.bottom-nav__item:hover {
  color: var(--text-primary);
}

.bottom-nav__icon {
  font-size: 1.25rem;
  line-height: 1;
}

/* --- Modal / Overlay --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: none;
  align-items: flex-end;
  justify-content: center;
  animation: overlayFadeIn 0.3s ease;
}

.modal-overlay.active {
  display: flex;
}

@keyframes overlayFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  width: 100%;
  max-width: var(--max-width);
  max-height: 92vh;
  overflow-y: auto;
  padding: 28px 24px;
  padding-bottom: max(28px, env(safe-area-inset-bottom));
  animation: modalSlideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.5);
}

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

.modal__handle {
  width: 44px;
  height: 5px;
  background: var(--border-glass);
  border-radius: var(--radius-full);
  margin: 0 auto 20px;
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.modal__title {
  font-size: 1.35rem;
  font-weight: 800;
}

.modal__close {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.3rem;
  transition: all var(--transition-fast);
}

.modal__close:hover {
  background: var(--bg-glass-strong);
  color: var(--text-primary);
  transform: scale(1.05);
}

/* --- AI Analysis Result --- */
.ai-result {
  margin-top: 20px;
  animation: viewFadeIn 0.35s ease;
}

.ai-result__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}

.ai-result__item-info {
  flex: 1;
}

.ai-result__item-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.ai-result__item-amount {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.ai-result__item-cal {
  font-weight: 800;
  color: var(--accent-green);
  font-size: 1rem;
}

.ai-result__total {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--accent-green-dim);
  border: 1px solid rgba(0, 240, 118, 0.2);
  border-radius: var(--radius-md);
  margin-top: 16px;
  font-weight: 800;
}

.ai-result__total-label {
  font-size: 1rem;
}

.ai-result__total-value {
  font-size: 1.35rem;
  color: var(--accent-green);
  text-shadow: 0 0 10px rgba(0, 240, 118, 0.2);
}

.ai-result__macros {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 12px;
}

.ai-result__macro {
  text-align: center;
  padding: 10px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.ai-result__macro-value {
  font-weight: 800;
  font-size: 1.1rem;
}

.ai-result__macro-label {
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  margin-top: 2px;
}

/* --- Camera Preview --- */
.camera-container {
  position: relative;
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #000;
  margin-bottom: 20px;
  border: 1px solid var(--border-glass);
}

.camera-container video,
.camera-container img {
  width: 100%;
  display: block;
  border-radius: var(--radius-md);
}

.camera-controls {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 20px;
}

.camera-btn {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  border: 4px solid var(--accent-green);
  background: rgba(0, 240, 118, 0.08);
  color: var(--accent-green);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.7rem;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-glow-green);
}

.camera-btn:hover {
  background: rgba(0, 240, 118, 0.2);
  box-shadow: 0 0 35px rgba(0, 240, 118, 0.4);
  transform: scale(1.05);
}

.camera-btn:active {
  transform: scale(0.92);
}

.upload-area {
  border: 2px dashed var(--border-glass);
  border-radius: var(--radius-md);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  margin-bottom: 20px;
  background: rgba(255, 255, 255, 0.01);
}

.upload-area:hover {
  border-color: var(--accent-green);
  background: var(--accent-green-dim);
  box-shadow: var(--shadow-glow-green);
}

.upload-area__icon {
  font-size: 3rem;
  margin-bottom: 12px;
  transition: transform var(--transition-base);
}

.upload-area:hover .upload-area__icon {
  transform: translateY(-4px);
}

.upload-area__text {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.95rem;
}

.upload-area__hint {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 6px;
}

/* --- Loading State --- */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  gap: 20px;
}

.loading__spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border-glass);
  border-top-color: var(--accent-green);
  border-radius: 50%;
  animation: spin 0.8s cubic-bezier(0.5, 0, 0.5, 1) infinite;
  box-shadow: 0 0 15px rgba(0, 240, 118, 0.1);
}

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

.loading__text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-align: center;
}

/* --- Settings --- */
.settings-section {
  margin-bottom: 28px;
}

.settings-section__title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
  padding-left: 4px;
}

.settings-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  transition: all var(--transition-base);
}

.settings-item:hover {
  background: var(--bg-glass-strong);
  border-color: rgba(255,255,255,0.12);
}

.settings-item__label {
  font-size: 0.95rem;
  font-weight: 600;
}

.settings-item__value {
  display: flex;
  align-items: center;
  gap: 10px;
}

.settings-item__input {
  width: 90px;
  text-align: center;
  padding: 8px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 700;
  outline: none;
  transition: all var(--transition-base);
}

.settings-item__input:focus {
  border-color: var(--border-focus);
  background: rgba(255,255,255,0.1);
  box-shadow: 0 0 10px rgba(0, 240, 118, 0.15);
}

.settings-item__unit {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* --- History --- */
.history-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.history-day {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.history-day:hover {
  background: var(--bg-glass-strong);
  transform: translateX(6px);
  border-color: rgba(255, 255, 255, 0.12);
}

.history-day__indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 16px;
  flex-shrink: 0;
}

.history-day__indicator--green { background: var(--accent-green); box-shadow: 0 0 10px var(--accent-green); }
.history-day__indicator--yellow { background: var(--accent-yellow); box-shadow: 0 0 10px var(--accent-yellow); }
.history-day__indicator--red { background: var(--accent-red); box-shadow: 0 0 10px var(--accent-red); }
.history-day__indicator--empty { background: var(--text-muted); opacity: 0.3; }

.history-day__info {
  flex: 1;
}

.history-day__date {
  font-weight: 700;
  font-size: 0.98rem;
}

.history-day__meals {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.history-day__calories {
  font-weight: 800;
  font-size: 1.15rem;
}

.history-day__goal {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-top: 1px;
}

.history-day__arrow {
  margin-left: 12px;
  color: var(--text-muted);
  font-size: 1.2rem;
  font-weight: bold;
}

/* --- Auth & Onboarding View Overhaul --- */
.auth-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 40px 18px;
  text-align: center;
}

.auth-card {
  width: 100%;
  max-width: 380px;
  padding: 32px 24px;
}

.auth-header {
  margin-bottom: 28px;
}

.auth-logo {
  width: 76px;
  height: 76px;
  background: linear-gradient(135deg, var(--accent-green), var(--accent-purple));
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin: 0 auto 20px;
  box-shadow: 0 8px 30px rgba(140, 82, 255, 0.4);
}

.auth-title {
  font-size: 1.85rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.auth-subtitle {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-top: 8px;
  line-height: 1.5;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: left;
}

.auth-switch {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-top: 20px;
}

.auth-switch-btn {
  color: var(--accent-green);
  background: none;
  border: none;
  font-family: var(--font-main);
  font-weight: 700;
  cursor: pointer;
  padding: 0 4px;
  text-decoration: underline;
}

.auth-switch-btn:hover {
  color: var(--accent-cyan);
}

/* --- Toast Notifications --- */
.toast-container {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: var(--max-width);
  width: calc(100% - 36px);
}

.toast {
  background: rgba(14, 14, 27, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.toast--success { border-left: 4px solid var(--accent-green); box-shadow: 0 4px 20px rgba(0, 240, 118, 0.15); }
.toast--error { border-left: 4px solid var(--accent-red); box-shadow: 0 4px 20px rgba(255, 74, 90, 0.15); }
.toast--info { border-left: 4px solid var(--accent-blue); box-shadow: 0 4px 20px rgba(61, 139, 255, 0.15); }

.toast__icon { font-size: 1.3rem; flex-shrink: 0; }

@keyframes toastIn {
  from { opacity: 0; transform: translate(-50%, -20px) scale(0.9); }
  to { opacity: 1; transform: translate(0, 0) scale(1); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translate(0, 0) scale(1); }
  to { opacity: 0; transform: translate(0, -20px) scale(0.9); }
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 5px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-glass);
  border-radius: var(--radius-full);
}

/* --- Favorites & Weight elements --- */
#favorites-list-area {
  max-height: 250px;
  overflow-y: auto;
  padding-right: 4px;
}

.fav-item-row:hover {
  background: var(--bg-glass-strong);
  border-color: var(--accent-yellow);
}

#favorites-portion-area {
  border: 1px solid var(--accent-yellow);
  box-shadow: 0 0 16px rgba(255, 219, 61, 0.15);
  animation: slideInUp 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideInUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* --- Utility --- */
.hidden { display: none !important; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mt-16 { margin-top: 16px; }

/* --- Calendar Strip --- */
.calendar-strip {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  margin-bottom: 20px;
  overflow-x: auto;
  padding: 4px 2px;
}

.calendar-day {
  flex: 1;
  min-width: 44px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 2px;
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  cursor: pointer;
  transition: all var(--transition-base);
  user-select: none;
}

.calendar-day:hover {
  background: var(--bg-glass-strong);
  transform: translateY(-2px);
}

.calendar-day.active {
  border-color: var(--accent-green);
  background: rgba(0, 240, 118, 0.08);
  box-shadow: 0 0 10px rgba(0, 240, 118, 0.2);
}

.calendar-day__name {
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.calendar-day__num {
  font-size: 0.95rem;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.calendar-day__kcal {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--accent-green);
  white-space: nowrap;
}

.calendar-day__kcal.empty {
  color: var(--text-muted);
  opacity: 0.45;
}

#calendar-month-label {
  cursor: pointer;
  transition: all var(--transition-base);
}

#calendar-month-label:hover {
  color: var(--accent-green);
  text-shadow: 0 0 8px rgba(0, 240, 118, 0.4);
}

/* --- Calendar Month Grid --- */
.calendar-month-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
  margin-top: 10px;
}

.calendar-month-day {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  cursor: pointer;
  position: relative;
  transition: all var(--transition-base);
  user-select: none;
}

.calendar-month-day:hover {
  background: var(--bg-glass-strong);
  transform: translateY(-2px);
}

.calendar-month-day__num {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.calendar-month-day__kcal {
  font-size: 0.55rem;
  font-weight: 700;
  margin-top: 2px;
  text-align: center;
  white-space: nowrap;
}

.calendar-month-day.goal-reached {
  border-color: var(--accent-green);
  background: rgba(0, 240, 118, 0.04);
  box-shadow: 0 0 8px rgba(0, 240, 118, 0.12);
}

.calendar-month-day.goal-reached .calendar-month-day__num {
  color: var(--text-primary);
}

.calendar-month-day.goal-reached .calendar-month-day__kcal {
  color: var(--accent-green);
}

.calendar-month-day.goal-exceeded {
  border-color: var(--accent-red);
  background: rgba(255, 74, 74, 0.04);
  box-shadow: 0 0 8px rgba(255, 74, 74, 0.12);
}

.calendar-month-day.goal-exceeded .calendar-month-day__num {
  color: var(--text-primary);
}

.calendar-month-day.goal-exceeded .calendar-month-day__kcal {
  color: var(--accent-red);
}

.calendar-month-day.empty-day {
  visibility: hidden;
  pointer-events: none;
}

.calendar-month-day.active-day {
  border-width: 2px;
  box-shadow: 0 0 12px rgba(0, 240, 118, 0.2);
}

/* --- Streak Badge --- */
.streak-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 102, 0, 0.12);
  border: 1px solid rgba(255, 102, 0, 0.25);
  padding: 5px 9px;
  border-radius: 14px;
  font-size: 0.75rem;
  font-weight: 900;
  color: #ff6600;
  cursor: default;
  user-select: none;
  transition: all var(--transition-base);
}

.streak-badge__icon {
  animation: flamePulse 1.2s infinite alternate;
  font-size: 0.85rem;
}

@keyframes flamePulse {
  from {
    transform: scale(1);
    filter: drop-shadow(0 0 1px #ff3300);
  }
  to {
    transform: scale(1.15) translateY(-1px);
    filter: drop-shadow(0 0 5px #ff6600);
  }
}

/* --- Responsive --- */
@media (min-width: 481px) {
  #app {
    padding: 0 24px;
    padding-bottom: 100px;
  }

  .modal {
    border-radius: var(--radius-xl);
    margin: auto;
    max-height: 88vh;
  }

  .modal-overlay {
    align-items: center;
  }

  .toast-container {
    width: 380px;
  }
}

/* --- Light Theme Variables --- */
[data-theme="light"] {
  --bg-primary: #f0f2f5;
  --bg-secondary: #ffffff;
  --bg-card: rgba(0, 0, 0, 0.03);
  --bg-card-hover: rgba(0, 0, 0, 0.05);
  --bg-glass: rgba(0, 0, 0, 0.02);
  --bg-glass-strong: rgba(0, 0, 0, 0.06);
  --bg-input: #ffffff;

  --text-primary: #1a1a2e;
  --text-secondary: #5d5d7e;
  --text-muted: #8c8caa;
  --text-accent: #008744;

  --border-subtle: rgba(0, 0, 0, 0.05);
  --border-glass: rgba(0, 0, 0, 0.08);

  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 12px 30px rgba(0, 0, 0, 0.15);
  
  --shadow-glow-green: none;
  --shadow-glow-purple: none;
  --shadow-glow-cyan: none;
}

[data-theme="light"] body::before,
[data-theme="light"] body::after {
  display: none !important;
}

/* --- Calendar Heatmap & Streak --- */
.calendar-month-day.heat-0 {
  background: var(--bg-glass);
}
.calendar-month-day.heat-1 {
  background: rgba(0, 240, 118, 0.05);
  border-color: rgba(0, 240, 118, 0.15);
}
.calendar-month-day.heat-2 {
  background: rgba(0, 240, 118, 0.12);
  border-color: rgba(0, 240, 118, 0.3);
}
.calendar-month-day.heat-3 {
  background: rgba(0, 240, 118, 0.2);
  border-color: rgba(0, 240, 118, 0.5);
  box-shadow: 0 0 8px rgba(0, 240, 118, 0.15);
}
.calendar-month-day.heat-4 {
  background: rgba(0, 240, 118, 0.3);
  border-color: var(--accent-green);
  box-shadow: 0 0 12px rgba(0, 240, 118, 0.25);
}
.calendar-month-day.heat-over {
  background: rgba(255, 74, 90, 0.15);
  border-color: var(--accent-red);
}

.calendar-month-day.streak-border {
  border: 2px solid var(--accent-yellow);
  box-shadow: 0 0 10px rgba(255, 219, 61, 0.3);
}

/* --- Achievements / Gamification --- */
.badge-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 12px 8px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.badge-card.locked {
  opacity: 0.4;
  filter: grayscale(1);
}

.badge-card.unlocked {
  border-color: var(--accent-yellow);
  background: rgba(255, 219, 61, 0.03);
  box-shadow: 0 4px 12px rgba(255, 219, 61, 0.05);
}

.badge-card__icon {
  font-size: 2rem;
  margin-bottom: 6px;
}

.badge-card__name {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.badge-card__desc {
  font-size: 0.6rem;
  color: var(--text-secondary);
  line-height: 1.2;
}

/* --- Challenge Card --- */
.challenge-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  transition: all var(--transition-base);
}

.challenge-card.completed {
  border-color: var(--accent-green);
  background: rgba(0, 240, 118, 0.02);
}

.challenge-card__icon {
  font-size: 1.5rem;
}

.challenge-card__info {
  flex: 1;
}

.challenge-card__name {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.challenge-card__desc {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.challenge-card__progress-container {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}

.challenge-card__progress-bar {
  flex: 1;
  height: 4px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 2px;
  overflow: hidden;
}

.challenge-card__progress-fill {
  height: 100%;
  background: var(--accent-purple);
  transition: width 0.3s ease;
}

.challenge-card.completed .challenge-card__progress-fill {
  background: var(--accent-green);
}

.challenge-card__reward {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent-yellow);
}

/* --- Mood Buttons --- */
.mood-btn {
  font-size: 1.5rem;
  padding: 6px;
  border-radius: 50%;
  transition: all 0.2s ease;
}
.mood-btn:hover {
  transform: scale(1.2);
}
.mood-btn.selected {
  opacity: 1 !important;
  transform: scale(1.3);
  filter: none !important;
  text-shadow: 0 0 10px var(--accent-yellow);
}

/* --- Day Popup --- */
.day-popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.day-popup-overlay.active {
  opacity: 1;
  pointer-events: all;
}
.day-popup {
  width: 90%;
  max-width: 380px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.day-popup-overlay.active .day-popup {
  transform: translateY(0);
}

/* AI result inline inputs */
.ai-item-name-input:focus,
.ai-item-amount-input:focus {
  outline: none;
  border-bottom: 1px solid var(--accent-green) !important;
}

.ai-item-cal-input:focus,
.ai-item-protein-input:focus,
.ai-item-carbs-input:focus,
.ai-item-fat-input:focus {
  outline: none;
  border-color: var(--accent-green) !important;
  box-shadow: 0 0 5px rgba(0, 240, 118, 0.3);
}

.ai-result__item input {
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

/* Dropdown select options styling */
select option {
  background-color: #1a1a2e; /* dark navy background */
  color: #ffffff;            /* white text */
}