/* ============================================================
   FITFLOW · style.css
   Glassmorphism + dark/light theme · Syne + DM Sans
   ============================================================ */

/* ── CSS Variables ─────────────────────────────────────────── */
:root {
  --accent-1: #60efff;
  --accent-2: #00ff87;
  --accent-3: #ff6b6b;
  --accent-purple: #b06ef3;

  /* Dark theme (default) */
  --bg: #0a0e1a;
  --bg-2: #111827;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-hover: rgba(255, 255, 255, 0.10);
  --border: rgba(255, 255, 255, 0.10);
  --text-1: #f0f4ff;
  --text-2: rgba(200, 210, 240, 0.70);
  --text-3: rgba(200, 210, 240, 0.40);
  --shadow: 0 8px 32px rgba(0,0,0,0.45);
  --shadow-sm: 0 2px 12px rgba(0,0,0,0.30);
  --input-bg: rgba(255,255,255,0.05);
  --input-border: rgba(255,255,255,0.12);
  --input-focus: rgba(96, 239, 255, 0.35);
  --btn-glow: rgba(96, 239, 255, 0.25);
  --orb-1: rgba(96, 239, 255, 0.15);
  --orb-2: rgba(176, 110, 243, 0.12);
  --orb-3: rgba(0, 255, 135, 0.10);
  --progress-bg: rgba(255,255,255,0.07);
  --nav-bg: rgba(10, 14, 26, 0.70);
}

[data-theme="light"] {
  --bg: #eef2ff;
  --bg-2: #dde3f5;
  --surface: rgba(255, 255, 255, 0.55);
  --surface-hover: rgba(255, 255, 255, 0.75);
  --border: rgba(100, 120, 200, 0.18);
  --text-1: #0f172a;
  --text-2: rgba(15, 23, 42, 0.65);
  --text-3: rgba(15, 23, 42, 0.35);
  --shadow: 0 8px 32px rgba(100,120,200,0.18);
  --shadow-sm: 0 2px 12px rgba(100,120,200,0.12);
  --input-bg: rgba(255,255,255,0.60);
  --input-border: rgba(100,120,200,0.22);
  --input-focus: rgba(96, 239, 255, 0.30);
  --btn-glow: rgba(96, 239, 255, 0.20);
  --orb-1: rgba(96, 239, 255, 0.25);
  --orb-2: rgba(176, 110, 243, 0.20);
  --orb-3: rgba(0, 255, 135, 0.18);
  --progress-bg: rgba(0,0,0,0.08);
  --nav-bg: rgba(238, 242, 255, 0.80);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-1);
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.4s ease, color 0.4s ease;
}

/* ── Background Orbs ───────────────────────────────────────── */
.bg-orbs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: orbFloat 12s ease-in-out infinite alternate;
}

.orb-1 {
  width: 520px; height: 520px;
  top: -120px; left: -100px;
  background: var(--orb-1);
  animation-duration: 14s;
}
.orb-2 {
  width: 400px; height: 400px;
  bottom: -80px; right: -80px;
  background: var(--orb-2);
  animation-duration: 10s;
  animation-direction: alternate-reverse;
}
.orb-3 {
  width: 320px; height: 320px;
  top: 40%; left: 55%;
  background: var(--orb-3);
  animation-duration: 18s;
}

@keyframes orbFloat {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(30px, -40px) scale(1.08); }
}

/* ── Header ────────────────────────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(20px) saturate(1.6);
  -webkit-backdrop-filter: blur(20px) saturate(1.6);
  border-bottom: 1px solid var(--border);
  transition: background 0.4s;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 24px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.logo-icon {
  font-size: 22px;
  filter: drop-shadow(0 0 8px var(--accent-1));
}
.logo-text {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 20px;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.3px;
}

/* Desktop nav */
.nav {
  display: flex;
  gap: 4px;
  margin: 0 auto;
}

.nav-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  padding: 8px 16px;
  border-radius: 8px;
  transition: all 0.2s;
  position: relative;
  white-space: nowrap;
}
.nav-btn:hover { color: var(--text-1); background: var(--surface-hover); }
.nav-btn.active {
  color: var(--accent-1);
  background: rgba(96, 239, 255, 0.10);
}
.nav-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%; transform: translateX(-50%);
  width: 20px; height: 2px;
  background: var(--accent-1);
  border-radius: 2px;
}

/* Mobile nav (icon row below header) */
.mobile-nav {
  display: none;
  justify-content: space-around;
  padding: 8px 16px;
  border-top: 1px solid var(--border);
}
.mobile-nav .nav-btn { font-size: 18px; padding: 6px 12px; }

/* Theme toggle */
.theme-toggle {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 40px; height: 40px;
  cursor: pointer;
  font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.25s;
  flex-shrink: 0;
}
.theme-toggle:hover { background: var(--surface-hover); transform: rotate(20deg); }

/* ── Main & Sections ───────────────────────────────────────── */
.main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  position: relative;
  z-index: 1;
}

.section { display: none; }
.section.active { display: block; }

/* Fade-in animation */
.fade-in { animation: fadeScale 0.45s cubic-bezier(0.22,1,0.36,1) both; }
@keyframes fadeScale {
  from { opacity: 0; transform: translateY(18px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.section-header { margin-bottom: 32px; }
.section-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.15;
  background: linear-gradient(135deg, var(--text-1) 0%, var(--accent-1) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-sub { color: var(--text-2); margin-top: 6px; font-size: 15px; }

/* ── Cards ─────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s, border-color 0.3s;
  margin-bottom: 20px;
}
.card:hover { box-shadow: var(--shadow), 0 0 0 1px rgba(96,239,255,0.08); }

.card-body {
  padding: 28px;
}

/* ── Form Fields ───────────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.field-full { grid-column: 1 / -1; }

.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.field label,
.field-label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--text-3);
}

input[type="text"],
input[type="number"] {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 12px;
  padding: 12px 16px;
  color: var(--text-1);
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
  width: 100%;
}
input:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px var(--input-focus);
  background: var(--surface-hover);
}
input::placeholder { color: var(--text-3); }

/* Hide number spinners */
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; }
input[type=number] { -moz-appearance: textfield; }

/* ── Goal Pills ─────────────────────────────────────────────── */
.goal-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.pill {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 40px;
  padding: 9px 18px;
  font-family: 'DM Sans', sans-serif;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  transition: all 0.22s;
  white-space: nowrap;
}
.pill:hover { background: var(--surface-hover); color: var(--text-1); }
.pill.active {
  background: linear-gradient(135deg, rgba(96,239,255,0.2), rgba(0,255,135,0.15));
  border-color: var(--accent-1);
  color: var(--accent-1);
  box-shadow: 0 0 12px rgba(96,239,255,0.15);
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  border: none;
  border-radius: 12px;
  padding: 13px 28px;
  font-family: 'DM Sans', sans-serif;
  font-size: 14.5px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.22s;
  position: relative;
  overflow: hidden;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: #0a0e1a;
  font-weight: 600;
  box-shadow: 0 4px 20px var(--btn-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--btn-glow);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-2);
}
.btn-ghost:hover { background: var(--surface-hover); color: var(--text-1); }

/* Ripple effect */
.ripple::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.25);
  border-radius: inherit;
  transform: scale(0);
  opacity: 0;
  transition: transform 0.5s, opacity 0.5s;
}
.ripple:active::after { transform: scale(2.5); opacity: 0; transition: 0s; }

/* Feedback text */
.feedback {
  margin-top: 12px;
  font-size: 13px;
  color: var(--accent-2);
  min-height: 18px;
  transition: opacity 0.3s;
}

/* ── Profile Card ───────────────────────────────────────────── */
.avatar-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 28px;
}
.avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 38px;
  background: linear-gradient(135deg, rgba(96,239,255,0.15), rgba(176,110,243,0.15));
  border: 2px solid rgba(96,239,255,0.30);
  box-shadow: 0 0 24px rgba(96,239,255,0.12);
}

/* ── Stats Row ──────────────────────────────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.stat-icon { font-size: 22px; margin-bottom: 4px; }
.stat-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-3); }
.stat-val { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 16px; color: var(--accent-1); }

/* ── BMI ────────────────────────────────────────────────────── */
.bmi-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 20px;
  align-items: start;
}

.bmi-result-body { text-align: center; }

.gauge-wrap {
  position: relative;
  display: inline-block;
  width: 200px;
  margin: 0 auto 16px;
}
.gauge-svg { width: 100%; height: auto; }
.gauge-center {
  position: absolute;
  bottom: 12px; left: 0; right: 0;
  display: flex; flex-direction: column; align-items: center;
}
.bmi-number {
  font-family: 'Syne', sans-serif;
  font-size: 32px;
  font-weight: 800;
  color: var(--text-1);
}
.bmi-unit { font-size: 11px; color: var(--text-3); text-transform: uppercase; letter-spacing: 1px; }

#gaugeNeedle { transition: transform 1.1s cubic-bezier(0.34,1.56,0.64,1); }
#gaugeFill    { transition: stroke-dashoffset 1.1s ease; }

.bmi-badge {
  display: inline-block;
  padding: 8px 22px;
  border-radius: 40px;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 20px;
}
.bmi-badge.under  { background: rgba(96,239,255,0.15); color: var(--accent-1); border: 1px solid rgba(96,239,255,0.3); }
.bmi-badge.normal { background: rgba(0,255,135,0.12);  color: var(--accent-2); border: 1px solid rgba(0,255,135,0.25); }
.bmi-badge.over   { background: rgba(255,190,50,0.15); color: #ffbe32;         border: 1px solid rgba(255,190,50,0.3); }
.bmi-badge.obese  { background: rgba(255,107,107,0.15);color: var(--accent-3); border: 1px solid rgba(255,107,107,0.3); }

.bmi-scale {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  text-align: left;
}
.scale-seg {
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
}
.seg-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.scale-seg.under .seg-dot { background: var(--accent-1); }
.scale-seg.normal .seg-dot { background: var(--accent-2); }
.scale-seg.over   .seg-dot { background: #ffbe32; }
.scale-seg.obese  .seg-dot { background: var(--accent-3); }
.seg-range { margin-left: auto; color: var(--text-3); font-size: 11px; }

/* ── Workout Planner ────────────────────────────────────────── */
.workout-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.day-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.2s, box-shadow 0.2s;
}
.day-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.day-card.completed {
  border-color: rgba(0,255,135,0.30);
  background: rgba(0,255,135,0.06);
}

.day-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.day-name {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 15px;
}
.day-badge {
  font-size: 10px;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(0,255,135,0.12);
  color: var(--accent-2);
  border: 1px solid rgba(0,255,135,0.2);
  opacity: 0;
  transition: opacity 0.3s;
}
.day-card.completed .day-badge { opacity: 1; }

.exercise-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }

.exercise-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--text-2);
  cursor: pointer;
  padding: 2px 0;
  transition: color 0.2s;
}
.exercise-item:hover { color: var(--text-1); }
.exercise-item.checked { color: var(--accent-2); text-decoration: line-through; }

/* Custom checkbox */
.check-box {
  width: 18px; height: 18px;
  border: 1.5px solid var(--input-border);
  border-radius: 5px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 11px;
  transition: all 0.2s;
  background: var(--input-bg);
}
.exercise-item.checked .check-box {
  background: var(--accent-2);
  border-color: var(--accent-2);
  color: #0a0e1a;
}

/* Workout summary */
.workout-summary-card { margin-top: 4px; }
.workout-summary-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.ws-info {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.ws-label { font-size: 13px; color: var(--text-2); font-weight: 500; }
.ws-count { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 15px; color: var(--accent-1); }

/* ── Progress Bars ──────────────────────────────────────────── */
.progress-bar-wrap {
  background: var(--progress-bg);
  border-radius: 40px;
  height: 8px;
  overflow: hidden;
  position: relative;
}
.progress-bar-wrap.large { height: 14px; }

.progress-bar {
  height: 100%;
  border-radius: 40px;
  background: var(--accent-2);
  transition: width 0.5s cubic-bezier(0.34,1.56,0.64,1);
}
.gradient-bar {
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
}

.bar-pct {
  position: absolute;
  right: 10px; top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  font-weight: 600;
  color: #0a0e1a;
}

/* ── Diet Planner ───────────────────────────────────────────── */
.diet-control-card { margin-bottom: 24px; }
.diet-control-body {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.diet-label { font-size: 13px; color: var(--text-2); white-space: nowrap; }

.meals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.meal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.2s, box-shadow 0.2s;
  animation: fadeScale 0.4s both;
}
.meal-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }

.meal-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.meal-icon { font-size: 26px; }
.meal-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 16px;
}
.meal-subtitle { font-size: 12px; color: var(--text-3); }

.meal-items { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.meal-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 14px;
  background: var(--input-bg);
  border-radius: 10px;
  font-size: 13.5px;
}
.meal-item-name { color: var(--text-1); }
.meal-item-cal {
  font-size: 12px;
  color: var(--accent-1);
  font-weight: 500;
  background: rgba(96,239,255,0.10);
  padding: 2px 8px;
  border-radius: 6px;
}

.meal-total {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-2);
}
.meal-total-val { font-weight: 600; color: var(--accent-2); }

/* ── Calorie Tracker ────────────────────────────────────────── */
.calorie-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
  gap: 16px;
  flex-wrap: wrap;
}
.calorie-big {
  display: flex;
  flex-direction: column;
}
.calorie-big span:first-child {
  font-family: 'Syne', sans-serif;
  font-size: 40px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.cal-unit { font-size: 13px; color: var(--text-2); margin-top: 4px; }

.target-wrap { display: flex; flex-direction: column; gap: 6px; align-items: flex-end; }
.target-wrap label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-3); }
.target-input-row { display: flex; align-items: center; gap: 6px; }
.target-input {
  width: 90px;
  padding: 8px 12px;
  font-size: 15px;
  font-weight: 600;
  text-align: right;
}
.kcal-chip {
  font-size: 12px;
  color: var(--text-3);
}

.calorie-footer {
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-2);
}
.calorie-footer span { font-weight: 600; color: var(--accent-2); }

/* Add food row */
.add-food-body {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
}
.flex1 { flex: 1; min-width: 160px; }

/* Food list */
.food-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}
.food-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 18px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.2s, box-shadow 0.2s;
  animation: slideIn 0.35s cubic-bezier(0.22,1,0.36,1) both;
}
@keyframes slideIn {
  from { opacity: 0; transform: translateX(-12px); }
  to   { opacity: 1; transform: translateX(0); }
}
.food-item:hover { transform: translateX(3px); }

.food-name { flex: 1; font-size: 14.5px; font-weight: 500; }
.food-cal-badge {
  background: rgba(96,239,255,0.12);
  border: 1px solid rgba(96,239,255,0.2);
  color: var(--accent-1);
  border-radius: 8px;
  padding: 4px 12px;
  font-size: 13px;
  font-weight: 600;
}
.food-delete {
  background: rgba(255,107,107,0.10);
  border: 1px solid rgba(255,107,107,0.20);
  border-radius: 8px;
  padding: 5px 10px;
  color: var(--accent-3);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
  font-family: inherit;
}
.food-delete:hover { background: rgba(255,107,107,0.20); transform: scale(1.08); }

.clear-wrap { text-align: center; }

/* ── Toast ──────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 40px;
  padding: 12px 26px;
  font-size: 14px;
  color: var(--text-1);
  box-shadow: var(--shadow);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1), opacity 0.3s;
  z-index: 999;
  white-space: nowrap;
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .bmi-layout { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .header-inner { padding: 0 16px; }
  .nav { display: none; }
  .mobile-nav { display: flex; }

  .main { padding: 28px 16px 100px; }

  .form-grid { grid-template-columns: 1fr; }
  .field-full { grid-column: 1; }

  .stats-row { grid-template-columns: 1fr 1fr; gap: 10px; }

  .workout-grid { grid-template-columns: 1fr 1fr; }

  .meals-grid { grid-template-columns: 1fr; }

  .add-food-body { flex-direction: column; }
  .add-food-body .btn { width: 100%; }

  .calorie-big span:first-child { font-size: 32px; }

  .bmi-scale { grid-template-columns: 1fr 1fr; }

  .diet-control-body { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 420px) {
  .stats-row { grid-template-columns: 1fr 1fr; }
  .workout-grid { grid-template-columns: 1fr; }
  .goal-pills { flex-direction: column; }
}