/* style.css — MyPantry Web (Enhanced Original) */

/* Default = DARK THEME */
:root{
  --bg:#0f1216;
  --panel:#151a21;
  --panel-2:#10151b;
  --text:#e8eef6;
  --muted:#a8b3c2;
  --border:#263041;
  --accent:#4ea1ff;
  --danger:#ff5a6a;
  --ok:#38d996;
  --warning:#fbbf24;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --shadow-sm: 0 4px 12px rgba(0,0,0,.25);
  --radius: 14px;
  --max: 1100px;
  
  /* Transitions for smooth theme switching */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
}

/* Light mode overrides */
:root[data-theme="light"]{
  --bg:#f5f5f4;
  --panel:#ffffff;
  --panel-2:#f0f2f6;
  --text:#0f172a;
  --muted:#5b6475;
  --border:#d0d7e2;
  --accent:#2563eb;
  --danger:#dc2626;
  --ok:#16a34a;
  --warning:#d97706;
  --shadow: 0 10px 30px rgba(0,0,0,.10);
  --shadow-sm: 0 4px 12px rgba(0,0,0,.06);
}

*{ 
  box-sizing:border-box; 
}

html,body{ 
  height:100%; 
}

body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 20% -10%, rgba(78,161,255,.20), transparent 60%),
              radial-gradient(900px 500px at 90% 0%, rgba(56,217,150,.12), transparent 60%),
              var(--bg);
  color: var(--text);
  line-height:1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* Layout */
header, main, footer{
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

header{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  padding: 28px 0 16px;
  gap: 16px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}

:root[data-theme="light"] header{
  border-bottom: 1px solid rgba(0,0,0,.08);
}

header h1{
  margin:0;
  font-size: 26px;
  font-weight: 700;
  letter-spacing:.2px;
}

header p{
  margin:6px 0 0;
  color: var(--muted);
  font-size: 14px;
}

nav{
  display:flex;
  gap:10px;
  align-items:center;
}

main{
  padding: 18px 0 34px;
  display:grid;
  gap: 16px;
}

/* Sections / panels */
section{
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}

:root[data-theme="light"] section{
  background: rgba(252, 252, 252, 0.938);
  border: 1px solid rgba(15,23,42,.12);
  box-shadow: 0 12px 30px rgba(15,23,42,.10);
}

:root[data-theme="light"] section:hover{
  box-shadow: 0 16px 40px rgba(15,23,42,.14);
  transform: translateY(-1px);
}

section h2{
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  letter-spacing:.2px;
}

/* Controls layout */
section[aria-label="Pantry controls"]{
  display:grid;
  gap: 12px;
}

section[aria-label="Pantry controls"] > div[aria-label="Filters"]{
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

/* Forms */
form{
  display:grid;
  gap: 12px;
}

form#addForm{
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-items:end;
}

form#addForm > div{
  display:grid;
  gap: 6px;
}

form#addForm > div:nth-child(1){ grid-column: span 4; } /* name */
form#addForm > div:nth-child(2){ grid-column: span 2; } /* qty */
form#addForm > div:nth-child(3){ grid-column: span 2; } /* unit */
form#addForm > div:nth-child(4){ grid-column: span 4; } /* category */
form#addForm > div:nth-child(5){ grid-column: span 3; } /* expiry */
form#addForm > div:nth-child(6){ grid-column: span 9; } /* notes */

form#addForm button[type="submit"]{
  grid-column: span 12;
}

label{
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.3px;
}

/* Form inputs - Enhanced */
input, select{
  width:100%;
  padding: 11px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(16,21,27,.75);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
}

input::placeholder{ 
  color: rgba(168,179,194,.65); 
}

input:hover, select:hover{
  border-color: rgba(255,255,255,.14);
}

input:focus, select:focus{
  border-color: rgba(78,161,255,.55);
  box-shadow: 0 0 0 3px rgba(78,161,255,.18);
  background: rgba(16,21,27,.85);
}

/* Enhanced keyboard navigation */
input:focus-visible, select:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Disabled state */
input:disabled, select:disabled{
  opacity: 0.5;
  cursor: not-allowed;
  background: rgba(16,21,27,.4);
}

/* Invalid state */
input:invalid:not(:placeholder-shown){
  border-color: rgba(255,90,106,.55);
}

input:invalid:not(:placeholder-shown):focus{
  box-shadow: 0 0 0 3px rgba(255,90,106,.18);
}

/* Light mode inputs */
:root[data-theme="light"] input,
:root[data-theme="light"] select{
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(15,23,42,.14);
  color: var(--text);
}

:root[data-theme="light"] input::placeholder{
  color: rgba(15,23,42,.55);
}

:root[data-theme="light"] input:hover,
:root[data-theme="light"] select:hover{
  border-color: rgba(15,23,42,.20);
}

:root[data-theme="light"] input:focus,
:root[data-theme="light"] select:focus{
  border-color: rgba(37,99,235,.55);
  box-shadow: 0 0 0 3px rgba(37,99,235,.18);
  background: rgba(255,255,255,1);
}

:root[data-theme="light"] input:disabled,
:root[data-theme="light"] select:disabled{
  background: rgba(15,23,42,.05);
}

/* Buttons - Enhanced */
button{
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.06);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor:pointer;
  transition: transform var(--transition-fast), background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

button:hover{
  background: rgba(255,255,255,.10);
  border-color: rgba(255,255,255,.18);
}

button:active{ 
  transform: translateY(1px); 
}

button:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Disabled button state */
button:disabled{
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

button:disabled:hover{
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.12);
}

/* Light mode buttons */
:root[data-theme="light"] button{
  border: 1px solid rgba(15,23,42,.14);
  background: rgba(15,23,42,.04);
}

:root[data-theme="light"] button:hover{
  background: rgba(15,23,42,.07);
  border-color: rgba(15,23,42,.18);
}

:root[data-theme="light"] button:disabled:hover{
  background: rgba(15,23,42,.04);
  border-color: rgba(15,23,42,.14);
}

/* Special buttons */
#btnSync{
  border-color: rgba(56,217,150,.35);
  background: rgba(56,217,150,.08);
}

#btnSync:hover{
  background: rgba(56,217,150,.14);
  border-color: rgba(56,217,150,.45);
}

#btnSignIn{
  border-color: rgba(78,161,255,.40);
  background: rgba(78,161,255,.10);
}

#btnSignIn:hover{
  background: rgba(78,161,255,.16);
  border-color: rgba(78,161,255,.50);
}

#themeToggle{
  border-color: rgba(255,255,255,.14);
  min-width: 44px;
  min-height: 44px; /* Accessibility: proper touch target */
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

:root[data-theme="light"] #themeToggle{
  border-color: rgba(15,23,42,.14);
}

.btnDelete{
  border-color: rgba(255,90,106,.35);
  background: rgba(255,90,106,.08);
  color: #ffd6da;
}

.btnDelete:hover{
  background: rgba(255,90,106,.14);
  border-color: rgba(255,90,106,.45);
}

:root[data-theme="light"] .btnDelete{
  color: var(--danger);
}

.btnEdit{
  border-color: rgba(255,255,255,.14);
}

/* Pantry list - Enhanced */
#status{
  margin: 6px 0 12px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  min-height: 18px;
}

#pantryList{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap: 10px;
}

/* Empty state */
#pantryList:empty::before{
  content: "No items in your pantry yet. Add your first item above!";
  display: block;
  padding: 32px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  border: 2px dashed rgba(255,255,255,.10);
  border-radius: var(--radius);
}

:root[data-theme="light"] #pantryList:empty::before{
  border-color: rgba(15,23,42,.14);
}

#pantryList li{
  display:flex;
  justify-content:space-between;
  gap: 12px;
  align-items:flex-start;
  padding: 12px;
  border-radius: 14px;
  background: rgba(0,0,0,.18);
  border: 1px solid rgba(255,255,255,.08);
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

#pantryList li:hover{
  background: rgba(0,0,0,.22);
  border-color: rgba(255,255,255,.12);
}

:root[data-theme="light"] #pantryList li{
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(15,23,42,.12);
  box-shadow: 0 10px 24px rgba(15,23,42,.08);
}

:root[data-theme="light"] #pantryList li:hover{
  background: rgba(255,255,255,1);
  border-color: rgba(15,23,42,.16);
  box-shadow: 0 12px 28px rgba(15,23,42,.12);
  transform: translateY(-1px);
}

/* Low stock indicator */
#pantryList li[data-low-stock="true"]{
  border-left: 3px solid var(--warning);
  background: linear-gradient(90deg, rgba(251,191,36,.08), rgba(0,0,0,.18));
}

:root[data-theme="light"] #pantryList li[data-low-stock="true"]{
  background: linear-gradient(90deg, rgba(251,191,36,.08), rgba(255,255,255,.92));
}

/* Expiring soon indicator */
#pantryList li[data-expiring="true"]{
  border-left: 3px solid var(--danger);
  background: linear-gradient(90deg, rgba(255,90,106,.08), rgba(0,0,0,.18));
}

:root[data-theme="light"] #pantryList li[data-expiring="true"]{
  background: linear-gradient(90deg, rgba(220,38,38,.08), rgba(255,255,255,.92));
}

#pantryList li > div:first-child{
  display:grid;
  gap: 4px;
}

#pantryList strong{
  font-size: 15px;
  font-weight: 600;
  letter-spacing:.2px;
}

#pantryList span{
  font-size: 13px;
  color: var(--muted);
}

#pantryList li > div:last-child{
  display:flex;
  gap: 8px;
  align-items:center;
}

/* Dialog / modal - Enhanced */
dialog{
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(21,26,33,.98), rgba(16,21,27,.98));
  color: var(--text);
  padding: 20px;
  width: min(520px, calc(100% - 32px));
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
  animation: modalSlide var(--transition-base) ease;
}

@keyframes modalSlide{
  from{
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to{
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

:root[data-theme="light"] dialog{
  border: 1px solid rgba(15,23,42,.14);
  background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(246,247,251,.98));
}

dialog::backdrop{
  background: rgba(0,0,0,.65);
  backdrop-filter: blur(4px);
  animation: fadeIn var(--transition-base) ease;
}

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

dialog h3{
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 600;
}

menu{
  display:flex;
  justify-content:flex-end;
  gap: 10px;
  padding: 0;
  margin: 16px 0 0;
}

#btnCancelEdit{
  background: transparent;
  border-color: rgba(255,255,255,.14);
}

#btnCancelEdit:hover{
  background: rgba(255,255,255,.06);
}

:root[data-theme="light"] #btnCancelEdit{
  border-color: rgba(15,23,42,.14);
}

:root[data-theme="light"] #btnCancelEdit:hover{
  background: rgba(15,23,42,.04);
}

/* Footer */
footer{
  padding: 1px 20px 18px;
  color: rgba(168,179,194,.75);
  font-size: 13px;
}

:root[data-theme="light"] footer{
  color: rgba(91,100,117,.90);
}

footer.footer-row{
  display: flex;
  justify-content: space-between;
  align-items: center;
}

footer b{
  font-weight: 600;
}

/* Utility classes */
.loading{
  pointer-events: none;
  opacity: 0.6;
}

.error-message{
  color: var(--danger);
  font-size: 13px;
  font-weight: 500;
  margin-top: 4px;
}

.success-message{
  color: var(--ok);
  font-size: 13px;
  font-weight: 500;
  margin-top: 4px;
}

/* Loading spinner */
.spinner{
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,.3);
  border-radius: 50%;
  border-top-color: var(--accent);
  animation: spin 0.6s linear infinite;
}

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

/* Responsive */
@media (max-width: 900px){
  form#addForm{
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
  form#addForm > div:nth-child(1){ grid-column: span 6; }
  form#addForm > div:nth-child(2){ grid-column: span 3; }
  form#addForm > div:nth-child(3){ grid-column: span 3; }
  form#addForm > div:nth-child(4){ grid-column: span 6; }
  form#addForm > div:nth-child(5){ grid-column: span 3; }
  form#addForm > div:nth-child(6){ grid-column: span 6; }
  form#addForm button[type="submit"]{ grid-column: span 6; }
}

@media (max-width: 520px){
  header{
    flex-direction: column;
    align-items:flex-start;
  }
  
  nav{
    width: 100%;
  }
  
  section[aria-label="Pantry controls"] > div[aria-label="Filters"]{
    grid-template-columns: 1fr;
  }
  
  #pantryList li{
    flex-direction: column;
  }
  
  #pantryList li > div:last-child{
    width: 100%;
    justify-content:flex-end;
  }
  
  footer.footer-row{
    flex-direction: column;
    gap: 6px;
    align-items: flex-start;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce){
  *,
  *::before,
  *::after{
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high){
  button, input, select{
    border-width: 2px;
  }
  
  button:focus-visible,
  input:focus-visible,
  select:focus-visible{
    outline-width: 3px;
  }
}

/* Screen reader only content */
.sr-only{
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}