:root {
  --bg-1: #fff3db;
  --bg-2: #d9f0ff;
  --ink: #1a1f2d;
  --brand: #ff5f2e;
  --brand-dark: #db4b20;
  --accent: #1f9d7a;
  --line: #d5d9e4;
  --card: rgba(255, 255, 255, 0.82);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 95, 46, 0.18) 0%, transparent 40%),
    radial-gradient(circle at 85% 10%, rgba(31, 157, 122, 0.2) 0%, transparent 45%),
    linear-gradient(135deg, var(--bg-1), var(--bg-2));
  min-height: 100vh;
}

.app-shell {
  width: min(1100px, 92vw);
  margin: 2rem auto 3rem;
  display: grid;
  gap: 1rem;
  padding-inline: max(0px, env(safe-area-inset-left)) max(0px, env(safe-area-inset-right));
}

.card {
  background: var(--card);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem;
  box-shadow: 0 12px 35px rgba(12, 16, 32, 0.08);
}

h1,
h2,
h3 {
  margin: 0.2rem 0 0.8rem;
}

.auth-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

form {
  display: grid;
  gap: 0.6rem;
}

input,
select,
button {
  font: inherit;
  border-radius: 10px;
  border: 1px solid var(--line);
  padding: 0.65rem 0.8rem;
  min-height: 44px;
}

button {
  background: var(--brand);
  color: white;
  border: none;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease;
}

button:hover {
  transform: translateY(-1px);
  background: var(--brand-dark);
}

button.secondary {
  background: #27303f;
}

button.secondary:hover {
  background: #1d2430;
}

.hidden {
  display: none;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
  position: sticky;
  top: max(0px, env(safe-area-inset-top));
  z-index: 30;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
}

.topbar-controls {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.topbar-controls label {
  font-size: 0.9rem;
  opacity: 0.85;
}

.topbar-controls #prev-day-btn,
.topbar-controls #next-day-btn {
  min-width: 2.1rem;
  padding: 0.45rem 0.6rem;
  font-weight: 700;
}

.profile-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.accordion-card {
  overflow: hidden;
}

.accordion-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  text-align: left;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.7rem 0.8rem;
}

.accordion-toggle:hover {
  background: rgba(255, 95, 46, 0.08);
  transform: none;
}

.accordion-icon {
  font-size: 1.1rem;
  line-height: 1;
  transition: transform 160ms ease;
}

.accordion-card.collapsed .accordion-icon {
  transform: rotate(-90deg);
}

.accordion-panel {
  margin-top: 0.8rem;
}

.accordion-card.collapsed .accordion-panel {
  display: none;
}

.search-row {
  grid-template-columns: 1.8fr 1fr auto;
}

.weight-row {
  grid-template-columns: 1fr 1fr auto;
}

.weight-goal-row {
  margin-top: 0.6rem;
  grid-template-columns: 1fr auto;
}

.weight-filters {
  margin-top: 0.7rem;
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.weight-filters button {
  padding: 0.42rem 0.65rem;
}

.weight-filters button.active {
  background: var(--brand);
}

.weight-chart {
  margin-top: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.72);
  min-height: 220px;
  padding: 0.8rem;
}

.weight-chart svg {
  display: block;
  width: 100%;
  height: 220px;
}

.weight-chart .axis {
  stroke: #9aa3b5;
  stroke-width: 1;
}

.weight-chart .line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2.5;
}

.weight-chart .dot {
  fill: var(--brand);
}

.weight-chart .goal-line {
  stroke: #2a6cf0;
  stroke-width: 1.5;
  stroke-dasharray: 5 4;
}

.weight-chart .goal-label {
  fill: #2a6cf0;
  font-weight: 600;
}

.weight-chart .label {
  fill: #49526a;
  font-size: 12px;
}

.result-item,
.entry-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.7rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.8rem;
  margin-top: 0.7rem;
  background: rgba(255, 255, 255, 0.72);
}

.result-item > div:last-child {
  display: flex;
  gap: 0.45rem;
  align-items: center;
}

.result-meta,
.entry-meta {
  font-size: 0.9rem;
  opacity: 0.9;
}

.entry-controls {
  grid-column: 1 / -1;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.status {
  min-height: 1.2rem;
  margin: 0;
  font-weight: 500;
}

@media (max-width: 1024px) {
  .app-shell {
    width: min(980px, 94vw);
  }

  .profile-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 800px) {
  .app-shell {
    width: 96vw;
    margin: 1rem auto 2rem;
    gap: 0.8rem;
  }

  .card {
    border-radius: 14px;
    padding: 0.85rem;
  }

  .topbar {
    flex-direction: column;
    align-items: stretch;
    top: 0;
  }

  .topbar > div:first-child {
    width: 100%;
  }

  .topbar-controls {
    width: 100%;
    justify-content: flex-start;
  }

  .topbar-controls input[type="date"] {
    min-width: 170px;
  }

  .auth-grid,
  .profile-grid,
  .search-row,
  .weight-row,
  .weight-goal-row,
  .result-item,
  .entry-item {
    grid-template-columns: 1fr;
  }

  .result-item > div:last-child {
    flex-wrap: wrap;
  }

  .entry-controls {
    gap: 0.45rem;
  }

  .weight-chart {
    min-height: 200px;
  }

  .weight-chart svg {
    height: 200px;
  }

  .accordion-toggle {
    padding: 0.65rem 0.75rem;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
  }

  h1,
  h2,
  h3 {
    line-height: 1.2;
  }

  input,
  select,
  button {
    font-size: 16px;
  }

  .topbar-controls {
    gap: 0.4rem;
  }

  .topbar-controls #prev-day-btn,
  .topbar-controls #next-day-btn {
    min-width: 2rem;
    padding: 0.45rem 0.55rem;
  }

  .weight-filters {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.4rem;
  }

  .weight-filters button {
    width: 100%;
  }
}
}