/* Advanced Calculator - Physical look */
:root{
  --acalc-blue:#10a4e8;
  --acalc-blue2:#0b86c8;
  --acalc-blue3:#096aa2;
  --acalc-white:#ffffff;
  --acalc-ink:#0a2a3a;
  --acalc-glow: rgba(255,255,255,.35);
  --acalc-shadow: rgba(0,0,0,.18);
  --acalc-shadow2: rgba(0,0,0,.26);
  --acalc-accent:#ff5aa8;
  --acalc-key:#1bb1f1;
  --acalc-key2:#1398d6;
  --acalc-op:#f8fbff;
  --acalc-opInk:#0b4a6a;
  --acalc-display:#e9f7ff;
}

@media (prefers-reduced-motion: reduce){
  *{ transition:none !important; animation:none !important; }
}

/* Optional: place a font file in assets/fonts and update below.
   Keeping it self-contained and functional without external fonts. */
@font-face{
  font-family:"ACalcDigital";
  src: local("DS-Digital"), local("Digital-7"), local("Segment7"), local("Orbitron");
  font-display: swap;
}

.acalc-wrap{
  display:flex;
  justify-content:center;
  align-items:flex-start;
  padding: 12px 0;
}

.acalc-shell{
  width: min(420px, 94vw);
  background: linear-gradient(180deg, var(--acalc-blue) 0%, var(--acalc-blue2) 55%, var(--acalc-blue3) 100%);
  border-radius: 26px;
  padding: 18px 16px 14px;
  box-shadow:
    0 18px 45px var(--acalc-shadow2),
    inset 0 1px 0 rgba(255,255,255,.45);
  position:relative;
  overflow:hidden;
}

.acalc-shell::before{
  content:"";
  position:absolute;
  inset:-40% -20%;
  background: radial-gradient(circle at 20% 20%, rgba(255,255,255,.18), rgba(255,255,255,0) 55%);
  pointer-events:none;
}

.acalc-display{
  background:
    linear-gradient(180deg, rgba(255,255,255,.75), rgba(255,255,255,.35)),
    linear-gradient(135deg, rgba(0,0,0,.04), rgba(0,0,0,.0) 55%);
  border-radius: 18px;
  padding: 12px 14px;
  box-shadow:
    inset 0 2px 0 rgba(255,255,255,.65),
    inset 0 -8px 18px rgba(0,0,0,.12),
    0 8px 18px rgba(0,0,0,.18);
  border: 1px solid rgba(255,255,255,.35);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.acalc-history{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 12px;
  letter-spacing: .02em;
  color: rgba(10,42,58,.7);
  min-height: 16px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.acalc-result{
  margin-top: 4px;
  font-family: "ACalcDigital", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 36px;
  line-height: 1.08;
  letter-spacing: .04em;
  text-align: right;
  color: var(--acalc-ink);
  text-shadow: 0 1px 0 rgba(255,255,255,.65);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Main keypad: 5x5 grid with merged keys */
.acalc-keys{
  margin-top: 14px;
  display:grid;

  /* FIX: allow grid to shrink properly inside narrow containers */
  grid-template-columns: repeat(5, minmax(0, 1fr));
  grid-template-rows: repeat(5, 64px);

  gap: 10px;
  align-items: stretch;
}

/* FIX: grid children should be allowed to shrink */
.acalc-keys > *{
  min-width: 0;
}

/* Base button */
.acalc-btn{
  appearance:none;
  border:0;
  border-radius: 16px;
  background: linear-gradient(180deg, var(--acalc-key) 0%, var(--acalc-key2) 100%);
  color: var(--acalc-white);
  font-weight: 700;

  /* FIX: smaller text + tighter padding so buttons fit inside */
  font-size: 18px;
  padding: 14px 0;
  min-width: 0;

  letter-spacing: .02em;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  user-select:none;

  box-shadow:
    0 10px 0 rgba(0,0,0,.14),
    0 16px 26px rgba(0,0,0,.22),
    inset 0 1px 0 rgba(255,255,255,.35);
  transform: translateZ(0);
  transition: transform .11s ease, box-shadow .11s ease, filter .2s ease;
  position:relative;
}

.acalc-btn::after{
  content:"";
  position:absolute;
  inset: 1px 1px auto 1px;
  height: 40%;
  border-radius: 15px;
  background: linear-gradient(180deg, rgba(255,255,255,.32), rgba(255,255,255,0));
  pointer-events:none;
}

.acalc-btn:hover{
  filter: brightness(1.04);
  box-shadow:
    0 10px 0 rgba(0,0,0,.13),
    0 18px 30px rgba(0,0,0,.24),
    inset 0 1px 0 rgba(255,255,255,.42),
    0 0 0 2px rgba(255,255,255,.12);
}

.acalc-btn:focus-visible{
  outline: 3px solid rgba(255,255,255,.7);
  outline-offset: 2px;
}

.acalc-btn.is-pressed,
.acalc-btn:active{
  transform: translateY(7px);
  box-shadow:
    0 3px 0 rgba(0,0,0,.12),
    0 10px 18px rgba(0,0,0,.22),
    inset 0 1px 0 rgba(255,255,255,.22);
}

/* Function / operator styling */
.acalc-fn{
  background: linear-gradient(180deg, rgba(255,255,255,.98) 0%, rgba(240,247,255,.94) 100%);
  color: var(--acalc-opInk);

  /* FIX: slightly smaller for text-heavy keys (DEG, RAD, etc.) */
  font-size: 16px;
  padding: 12px 0;
  min-width: 0;
}

.acalc-op{
  background: linear-gradient(180deg, rgba(255,255,255,1) 0%, rgba(232,244,255,1) 100%);
  color: var(--acalc-opInk);
  font-size: 24px;
  min-width: 0;
}

.acalc-accent{
  background: linear-gradient(180deg, #ff7cbf 0%, var(--acalc-accent) 100%);
  color: #ffffff;
  min-width: 0;
}

.acalc-plus{
  grid-column: 5 / 6;
  grid-row: 4 / 6; /* spans last two rows */
  font-size: 28px;

  /* extra safety */
  min-width: 0;
}

/* Equals spans bottom row columns 2-4 */
.acalc-eq{
  grid-column: 2 / 5;
  grid-row: 5 / 6;
  background: linear-gradient(180deg, rgba(255,255,255,1) 0%, rgba(231,246,255,1) 100%);
  color: var(--acalc-opInk);
  font-size: 28px;

  /* extra safety */
  min-width: 0;
}

/* ================================
   FIX: White buttons hover text pink
   ================================ */
.acalc-fn:hover,
.acalc-op:hover,
.acalc-eq:hover,
.acalc-fn:focus,
.acalc-op:focus,
.acalc-eq:focus,
.acalc-fn:focus-visible,
.acalc-op:focus-visible,
.acalc-eq:focus-visible{
  color: var(--acalc-accent) !important;
}

.acalc-fn:active,
.acalc-op:active,
.acalc-eq:active,
.acalc-fn.is-pressed,
.acalc-op.is-pressed,
.acalc-eq.is-pressed{
  color: var(--acalc-accent) !important;
}

/* Drawer toggle */
.acalc-drawer-toggle{
  width: 100%;
  margin-top: 12px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.10) !important;
  color: rgba(255,255,255,.92);
  cursor: pointer;
  padding: 10px 0 6px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  border-radius: 18px;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.22),
    0 10px 22px rgba(0,0,0,.16);
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
  outline: none !important;              /* FIX: stop theme outline */
  -webkit-tap-highlight-color: transparent;
}

.acalc-drawer-toggle:hover{
  background: rgba(255,255,255,.14) !important;
  border-color: rgba(255,255,255,.16) !important; /* FIX: prevent orange border */
  outline: none !important;                        /* FIX */
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.28),
    0 12px 26px rgba(0,0,0,.18),
    0 0 0 2px rgba(255,255,255,.10) !important;    /* FIX: replace orange ring */
}

.acalc-drawer-toggle:active{
  background: rgba(255,255,255,.12) !important;
  border-color: rgba(255,255,255,.16) !important;
  outline: none !important;
  transform: translateY(1px);
}

.acalc-drawer-toggle:focus{
  outline: none !important; /* FIX: if theme adds focus outline */
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.22),
    0 10px 22px rgba(0,0,0,.16),
    0 0 0 3px rgba(255,255,255,.18) !important; /* FIX: no orange ring */
}

.acalc-drawer-toggle:focus-visible{
  outline: none !important; /* FIX: remove orange outline */
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.22),
    0 10px 22px rgba(0,0,0,.16),
    0 0 0 3px rgba(255,255,255,.28) !important; /* FIX: white ring */
  border-radius: 18px;
}

.acalc-arrow{
  display:inline-flex;
  width: 42px;
  height: 34px;
  align-items:center;
  justify-content:center;
  border-radius: 14px;
  background: rgba(255,255,255,.16);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.35);
  font-size: 20px;
  line-height: 1;
  transform-origin: 50% 50%;
  transition: transform .26s cubic-bezier(.2,.8,.2,1), background .2s ease;
}

.acalc-drawer-toggle:hover .acalc-arrow{
  background: rgba(255,255,255,.22);
}

/* Drawer panel */
.acalc-drawer{
  margin-top: 6px;
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 18px;
  overflow:hidden;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.20);
}

.acalc-drawer-inner{
  padding: 10px;
}

.acalc-sci{
  padding: 10px;
  display:grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}

.acalc-sci-btn{
  font-size: 16px;
  border-radius: 14px;
  height: 52px;
}

.acalc-shell[data-drawer-open="1"] .acalc-arrow{
  transform: rotate(180deg);
}

.acalc-drawer.animating{
  will-change: height, transform, opacity;
}

/* Small screens adjustments */
@media (max-width: 360px){
  .acalc-keys{ grid-template-rows: repeat(5, 58px); gap: 9px; }
  .acalc-btn{ font-size: 20px; border-radius: 14px; }
  .acalc-result{ font-size: 32px; }
  .acalc-sci-btn{ height: 48px; }
}