/*
  Mobile-first styles: the base rules are for phones. The @media rule
  near the bottom adjusts the layout for wider screens.

  The look follows cornellfoodrecoverynetwork.com: white background,
  FRN green, gray text, Arvo headings, and "—— Heading ——" section titles.
  The darker red comes from the Cornell FRN bear logo.
*/

/* Colors live in variables so they can be changed in one place. */
:root {
  --bg: #ffffff;
  --surface: #f2f2f2;        /* light gray bands, like the website footer */
  --card: #ffffff;
  --text: #40404c;           /* headings: the website's dark slate */
  --body: #555555;           /* body text: the website's gray */
  --muted: #6e6e6e;
  --border: #dddddd;
  --green: #5e9516;          /* FRN green, from the website and logo */
  --green-strong: #4b7a10;   /* darker green so white button text is readable */
  --on-green: #ffffff;
  --green-tint: #eef5e6;
  --red: #8b1a2b;            /* from the Cornell FRN bear logo */
  --red-tint: #f8e9eb;
  --amber: #7a4f00;          /* "allergens unknown" warning */
  --amber-tint: #fdf2d6;
  --radius: 12px;

  --font-heading: "Arvo", Georgia, serif;
  --font-ui: "Varela Round", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  /* Always light, like the website, even if the phone is in dark mode.
     This also keeps form controls and scrollbars light. */
  color-scheme: only light;
}

* { box-sizing: border-box; }

/* Make sure the `hidden` attribute always wins, even over display rules */
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.45;
  background: var(--bg);
  color: var(--body);
  /* Leave room so the last card isn't hidden behind the bottom bar */
  padding-bottom: calc(88px + env(safe-area-inset-bottom, 0px));
}

a { color: var(--green-strong); }

/* ---- Header: centered logo, like the website ---- */
.topbar {
  position: relative;
  text-align: center;
  padding: calc(16px + env(safe-area-inset-top, 0px)) 16px 12px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.logo-link { display: inline-block; }
.logo {
  display: block;
  width: auto;
  height: 64px;
}

.app-title {
  margin: 8px 0 0;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--text);
}
.status-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 2px;
}
.subtitle { margin: 0; color: var(--muted); font-size: 0.875rem; }

main { padding: 0 16px; max-width: 640px; margin: 0 auto; }

/* "—— In the fridge now ——": text with a line on each side */
.section-heading {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 24px 0 16px;
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: 1.375rem;
  color: var(--text);
  text-align: center;
}
.section-heading::before,
.section-heading::after {
  content: "";
  flex: 1;
  border-top: 2px solid var(--text);
  opacity: 0.8;
}

/* ---- Buttons ---- */
.btn {
  min-height: 44px; /* Apple's recommended minimum tap target */
  padding: 0 16px;
  border: 1.5px solid var(--border);
  border-radius: 999px; /* pill shape, matching Varela Round's soft look */
  background: var(--card);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 1rem;
  cursor: pointer;
}
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn:focus-visible, .icon-btn:focus-visible {
  outline: 3px solid var(--green);
  outline-offset: 2px;
}
.btn-primary { background: var(--green-strong); border-color: var(--green-strong); color: var(--on-green); }
.btn-danger { color: var(--red); border-color: var(--border); }
.btn-danger-solid { background: var(--red); border-color: var(--red); color: var(--card); }
.btn-block { width: 100%; }

.icon-btn {
  width: 36px; height: 36px;
  border: 1.5px solid var(--border);
  border-radius: 50%;
  background: var(--card);
  color: var(--green-strong);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
}
.icon-btn.spinning { animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- The fridge ----
   Two layers stacked in the same spot: the interior (items on shelves) and
   the door on top of it. Opening swings the door around its left edge
   (the hinge) in 3D, revealing the interior. */
.fridge {
  --fridge-height: 440px;
  position: relative;
  min-height: var(--fridge-height);
  border: 3px solid #c9d0cc;
  border-radius: 22px;
  background: #ffffff;
  perspective: 1600px; /* how "deep" the 3D door swing looks */
  box-shadow: 0 10px 24px -12px rgb(0 0 0 / 0.25);
}
/* Two little feet under the fridge */
.fridge::before,
.fridge::after {
  content: "";
  position: absolute;
  bottom: -10px;
  width: 28px;
  height: 8px;
  border-radius: 0 0 6px 6px;
  background: #9aa39e;
}
.fridge::before { left: 24px; }
.fridge::after { right: 24px; }

/* Inside: cool white with a soft "fridge light" glow at the top */
.fridge-interior {
  height: var(--fridge-height);
  overflow: hidden;
  padding: 52px 14px 18px;
  border-radius: 19px;
  background:
    radial-gradient(120% 40% at 50% 0%, #fffbe6 0%, transparent 70%),
    linear-gradient(#f3f8fb, #e9f1f6);
  box-shadow: inset 0 0 0 1px #dbe5eb, inset 0 8px 18px -10px rgb(0 0 0 / 0.15);
}
/* Once open, the interior grows to fit every item */
.fridge[data-state="open"] .fridge-interior {
  height: auto;
  min-height: var(--fridge-height);
}

.close-fridge-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  min-height: 36px;
  padding: 0 14px;
  border: 1.5px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  cursor: pointer;
}

/* The door */
.fridge-door {
  position: absolute;
  top: -3px;
  left: -3px;
  width: calc(100% + 6px);
  height: calc(var(--fridge-height) + 6px);
  padding: 0;
  border: 3px solid #c9d0cc;
  border-radius: 22px;
  background: linear-gradient(100deg, #ffffff 0%, #f6f8f7 60%, #eceff0 100%);
  box-shadow: inset -6px 0 12px -8px rgb(0 0 0 / 0.15);
  cursor: pointer;
  transform-origin: left center; /* the hinge */
  /* Closing: swing back in, and become visible right away */
  transition: transform 0.7s cubic-bezier(0.3, 0.8, 0.3, 1), opacity 0.15s ease;
}
.fridge-door:focus-visible { outline: 3px solid var(--green); outline-offset: 4px; }

/* Opening: swing out past 90°, then fade away so it's out of the way */
.fridge[data-state="open"] .fridge-door {
  transform: rotateY(-110deg);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    transform 0.8s cubic-bezier(0.5, 0, 0.3, 1),
    opacity 0.25s ease 0.55s,
    visibility 0s linear 0.8s;
}

/* Line where the freezer door would be */
.door-seam {
  position: absolute;
  left: 0;
  right: 0;
  top: 30%;
  border-top: 3px solid #d5dbd8;
}
/* Long vertical handles on the right side (opposite the hinge) */
.door-handle {
  position: absolute;
  right: 18px;
  width: 10px;
  border-radius: 6px;
  background: linear-gradient(90deg, #b9c1bd, #e4e8e6 50%, #a9b2ad);
  box-shadow: 0 2px 4px rgb(0 0 0 / 0.2);
}
.door-handle-top { top: 9%; height: 15%; }
.door-handle-bottom { top: 36%; height: 26%; }

/* The bear, stuck on the door like a magnet */
.door-magnet {
  position: absolute;
  left: 50%;
  top: 34%;
  width: 150px;
  height: auto;
  transform: translateX(-60%) rotate(-6deg);
  filter: drop-shadow(0 3px 3px rgb(0 0 0 / 0.2));
}
/* A sticky note saying what's inside */
.door-note {
  position: absolute;
  left: 22px;
  top: 7%;
  max-width: 55%;
  padding: 10px 12px;
  background: #fff6b3;
  color: #40404c;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  line-height: 1.3;
  text-align: left;
  transform: rotate(-3deg);
  box-shadow: 0 4px 8px -2px rgb(0 0 0 / 0.2);
}

/* The Open button sits on the lower part of the door */
.open-fridge-btn {
  position: absolute;
  left: 32px;
  right: 32px;
  top: calc(var(--fridge-height) - 76px);
  min-height: 52px;
  font-size: 1.1rem;
  box-shadow: 0 6px 14px -6px rgb(0 0 0 / 0.35);
}

/* For people who turn on "Reduce motion" on their phone: no swinging */
@media (prefers-reduced-motion: reduce) {
  .fridge-door,
  .fridge[data-state="open"] .fridge-door { transition: none; }
}

/* ---- Item cards (sitting on glass shelves inside the fridge) ---- */
.item-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 30px; }
.item-list > li { position: relative; }
.item-list > li::after {
  content: "";
  position: absolute;
  left: -14px;
  right: -14px;
  bottom: -18px;
  height: 7px;
  border-radius: 2px;
  background: linear-gradient(#e6f0f5, #c9d9e2);
  box-shadow: 0 4px 6px -2px rgb(0 0 0 / 0.12);
}

.item {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 5px solid var(--green); /* green accent strip */
  border-radius: var(--radius);
  padding: 14px 16px;
}
.item-name {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  overflow-wrap: anywhere;
}
.item-meta { margin: 4px 0 12px; color: var(--muted); font-size: 0.9rem; }
.item-qty {
  display: inline-block;
  padding: 1px 10px;
  border-radius: 999px;
  background: var(--green-tint);
  color: var(--green-strong);
  font-size: 0.95rem;
}

/* ---- Allergens on a card ---- */
.allergens {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: -4px 0 12px;
  font-size: 0.9rem;
  color: var(--text);
}
.allergens-label { color: var(--muted); }
.allergen-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}
.allergens-unknown,
.allergens-none {
  display: block;
  padding: 4px 10px;
  border-radius: 8px;
}
.allergens-unknown { background: var(--amber-tint); color: var(--amber); }
.allergens-none { background: var(--green-tint); color: var(--green-strong); }

.allergen-icon { font-size: 1.05em; line-height: 1; }
/* Sesame has no emoji, so draw a little seed */
.seed-icon {
  display: inline-block;
  width: 0.6em;
  height: 0.9em;
  border: 1px solid #a8874a;
  border-radius: 50% 50% 50% 50% / 65% 65% 35% 35%;
  background: #efdcae;
  transform: rotate(20deg);
}

/* Reminder at the top of the fridge that allergen info isn't guaranteed.
   Leaves room on the right for the Close button. */
.allergen-note {
  margin: -40px 84px 16px 0;
  font-size: 0.8rem;
  line-height: 1.35;
  color: var(--muted);
}

.item-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.item-actions .btn { flex: 1 1 0; }

/* The "Take how many?" and "Mark empty?" panels that open inside a card */
.item-panel {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}
.item-panel p { margin: 0; flex: 1 1 100%; color: var(--text); }
.item-panel input { width: 5.5rem; }
.item-panel .btn { flex: 1 1 0; }

/* ---- Messages ---- */
.banner, .form-error {
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--red-tint);
  color: var(--red);
}
.banner { margin: 16px 0 0; }

/* Empty fridge: the Cornell FRN bear */
.empty-state { text-align: center; padding: 8px 0 16px; }
.bear-badge {
  width: 200px;
  height: 200px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: var(--green-tint);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.bear-badge img { width: 92%; height: auto; display: block; }
.empty-title {
  margin: 0 0 4px;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--text);
}
.empty-state p { margin: 0 0 4px; }

/* ---- Footer: light gray band, like the website ---- */
.site-footer {
  margin: 32px -16px 0;
  padding: 20px 16px;
  background: var(--surface);
  text-align: center;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  color: var(--muted);
}
.site-footer p { margin: 0; }

/* ---- Bottom bar ---- */
.bottombar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom, 0px));
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.bottombar .btn { max-width: 608px; margin: 0 auto; display: block; min-height: 52px; font-size: 1.1rem; }

/* ---- Add dialog ---- */
dialog {
  width: min(100% - 32px, 440px);
  border: none;
  border-top: 6px solid var(--green);
  border-radius: var(--radius);
  padding: 20px;
  background: var(--card);
  color: var(--body);
}
dialog::backdrop { background: rgb(0 0 0 / 0.45); }
dialog h2 {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  color: var(--text);
}

label { display: block; margin: 12px 0 4px; font-size: 0.9rem; color: var(--text); }
input, select {
  width: 100%;
  min-height: 44px;
  padding: 8px 12px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  /* 16px or larger stops iPhones from zooming in when you tap a field */
  font-family: var(--font-ui);
  font-size: 16px;
}
input:focus, select:focus { outline: none; border-color: var(--green); }
.row { display: flex; gap: 12px; }
.field { flex: 1 1 0; min-width: 0; }
.actions { margin-top: 20px; }
.actions .btn { flex: 1 1 0; }
.form-error { margin: 12px 0 0; }

/* Allergen choices in the Add form: tappable pills that turn green when
   ticked. The real checkbox is kept (for keyboards and screen readers) but
   hidden visually. */
.allergen-picker { margin: 12px 0 0; padding: 0; border: none; }
.allergen-picker legend { padding: 0; font-size: 0.9rem; color: var(--text); }
.hint { margin: 2px 0 8px; font-size: 0.8rem; color: var(--muted); }
.allergen-options { display: flex; flex-wrap: wrap; gap: 8px; }
.allergen-option {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 40px;
  margin: 0;
  padding: 0 12px;
  border: 1.5px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  color: var(--text);
  font-size: 0.95rem;
  cursor: pointer;
  user-select: none;
}
.allergen-option input {
  position: absolute;
  width: 1px;
  height: 1px;
  min-height: 0;
  opacity: 0;
}
.allergen-option:has(input:checked) {
  border-color: var(--green-strong);
  background: var(--green-tint);
  color: var(--green-strong);
}
.allergen-option:has(input:checked)::before { content: "✓"; }
.allergen-option:has(input:focus-visible) { outline: 3px solid var(--green); outline-offset: 2px; }

/* ---- Wider screens (tablets / laptops) ---- */
@media (min-width: 700px) {
  .logo { height: 80px; }
  .item-list { gap: 16px; }
}