/* ===========================
   CSS Variables & Reset
=========================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0a0f1a;
  --card-bg: #111827;
  --btn-dark: #1e2535;
  --btn-hover: #252d3f;
  --orange: #f5a623;
  --orange-hover: #e0951a;
  --cyan: #00d4ff;
  --text-white: #ffffff;
  --text-gray: #6b7a99;
  --display-bg: #0e131d;
  --radius: 18px;
}


/* =========================
   THEME : L MODE
========================= */

.theme-l{
  --bg:#0a0f1a;
  --card-bg:#111827;
  --btn-dark:#1e2535;
  --btn-hover:#252d3f;
  --orange:#f5a623;
  --orange-hover:#e0951a;
  --cyan:#00d4ff;
  --text-white:#ffffff;
  --text-gray:#6b7a99;
  --display-bg:#0e131d;
}

/* =========================
   THEME : AYANOKOJI MODE
========================= */

.theme-ayanokoji{
  --bg:#0d0d0d;
  --card-bg:#161616;
  --btn-dark:#222;
  --btn-hover:#2d2d2d;
  --orange:#9ca3af;
  --orange-hover:#d1d5db;
  --cyan:#ffffff;
  --text-white:#f3f4f6;
  --text-gray:#9ca3af;
  --display-bg:#111111;
}

/* =========================
   THEME : KIRA MODE
========================= */

.theme-kira{
  --bg:#140a18;
  --card-bg:#1f1027;
  --btn-dark:#2b1636;
  --btn-hover:#3b2248;
  --orange:#a855f7;
  --orange-hover:#c084fc;
  --cyan:#e879f9;
  --text-white:#faf5ff;
  --text-gray:#c4b5fd;
  --display-bg:#180f20;
}

#theme-toggle{
   position:absolute;
   top:20px;
   right:20px;
   padding: 6px 8px;
}

#theme-toggle:hover{

   transform:
   rotate(20deg)
   scale(1.08);

   background:rgba(0,212,255,0.12);

   color:white;

   box-shadow:
   0 0 12px rgba(0,212,255,0.35),
   0 0 24px rgba(0,212,255,0.15);
}
#theme-toggle:active{
   transform:scale(0.92);
}


/* ===========================
   Base / Body
=========================== */
body {
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Outfit', sans-serif;
  padding: 20px;
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(0, 212, 255, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(245, 166, 35, 0.04) 0%, transparent 60%);
}

/* ===========================
   Wrapper
=========================== */
.wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 60px;
  width: 100%;
  max-width: 1100px;
}

/* ===========================
   Left Panel
=========================== */
.left {
  flex: 1;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 50px;
  padding: 6px 14px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--cyan);
  width: fit-content;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

/* Title */
.title {
  font-size: clamp(36px, 5vw, 58px);
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.1;
  letter-spacing: -1px;
}

.title span {
  color: var(--cyan);
}

/* Divider */
.divider {
  width: 40px;
  height: 3px;
  background: var(--cyan);
  border-radius: 2px;
}

/* Description */
.desc {
  font-size: 15px;
  color: var(--text-gray);
  line-height: 1.7;
  font-weight: 400;
}

/* Tech Tags */
.tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.tag {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-white);
  background: rgba(255, 255, 255, 0.03);
}

.tag-icon {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
}

.tag-html .tag-icon { background: #e34c26; }
.tag-css  .tag-icon { background: #264de4; }
.tag-js   .tag-icon { background: #f0db4f; color: #000; }

/* Action Buttons */
.buttons-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-live {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  background: var(--cyan);
  color: #000;
  border: none;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  font-family: 'Outfit', sans-serif;
  text-decoration: none;
}

.btn-live:hover {
  background: #00bde8;
  transform: translateY(-1px);
}

.btn-code {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  background: transparent;
  color: var(--text-white);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-family: 'Outfit', sans-serif;
  text-decoration: none;
}

.btn-code:hover {
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

/* Social Icons */
.socials {
  display: flex;
  gap: 14px;
  align-items: center;
}

.social-icon {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-gray);
  cursor: pointer;
  transition: all 0.2s;
  font-size: 14px;
}

.social-icon:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}






/* ===========================
   Calculator Wrapper & Glow
=========================== */
.calc-wrap {
  position: relative;
  flex-shrink: 0;
}

.calc-glow {
  position: absolute;
  inset: -2px;
  border-radius: 28px;
  background: linear-gradient(135deg, var(--cyan), transparent 50%, rgba(0, 212, 255, 0.2));
  z-index: 0;
}

/* ===========================
   Calculator Body
=========================== */
.calculator {
  position: relative;
  z-index: 1;
  background: #12161f;
  border-radius: 26px;
  padding: 20px;
  width: 320px;
  box-shadow:
    0 0 0 1px rgba(0, 212, 255, 0.2),
    0 0 40px rgba(0, 212, 255, 0.15),
    0 25px 60px rgba(0, 0, 0, 0.6);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ===========================
   Display
=========================== */
.display {
  background: var(--display-bg);
  border-radius: 14px;
  padding: 16px 18px;
  min-height: 90px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-end;
  gap: 4px;
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.expression {
  font-size: 13px;
  color: var(--text-gray);
  font-weight: 400;
  min-height: 18px;
  word-break: break-all;
  text-align: right;
}

.result {
  font-size: 42px;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1;
  letter-spacing: -1px;
  transition: all 0.1s;
}

/* ===========================
   Button Grid
=========================== */
.buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.btn {
  height: 68px;
  border: none;
  border-radius: 14px;
  font-size: 20px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  font-family: 'Outfit', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.93);
}

/* Number buttons */
.btn-num {
  background: var(--btn-dark);
  color: var(--text-white);
}

.btn-num:hover {
  background: var(--btn-hover);
}

/* Function buttons (AC, +/-, %) */
.btn-fn {
  background: #2a3142;
  color: var(--text-white);
  font-size: 17px;
}

.btn-fn:hover {
  background: #323c52;
}

/* Operator buttons */
.btn-op {
  background: var(--orange);
  color: #fff;
  font-size: 22px;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(245, 166, 35, 0.3);
}

.btn-op:hover {
  background: var(--orange-hover);
  box-shadow: 0 4px 20px rgba(245, 166, 35, 0.4);
}

/* Zero button spans 2 columns */
.btn-zero {
  grid-column: span 2;
  justify-content: flex-start;
  padding-left: 26px;
}

/* Equals button */
.btn-eq {
  background: var(--orange);
  color: #fff;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(245, 166, 35, 0.3);
}

.btn-eq:hover {
  background: var(--orange-hover);
}

/* ===========================
   Responsive
=========================== */
@media (max-width: 780px) {
  .wrapper {
    flex-direction: column;
    gap: 40px;
    align-items: center;
  }

  .left {
    max-width: 100%;
    align-items: center;
    text-align: center;
  }

  .badge    { align-self: center; }
  .divider  { align-self: center; }
  .tags     { justify-content: center; }
  .buttons-row { justify-content: center; }
  .socials  { justify-content: center; }

}

@media (max-width: 380px) {
  .calculator { width: 290px; padding: 16px; }
  .btn        { height: 60px; font-size: 18px; }
  .result     { font-size: 36px; }
}