/* ========================================
   Main Styles — Calculator App
   Code by Clint Lorenzo
   ======================================== */

@import url("variables.css");
@import url("buttons.css");
@import url("responsive.css");

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

body {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  font-family: var(--font-system);
  gap: 10px;
  height: 100vh;
  height: 100svh;
  background-color: var(--calc-bg);
  color-scheme: dark;
  overflow: hidden;
}

/* ---- Main layout ---- */
main {
  width: 95%;
  max-width: var(--calc-max-width);
  height: fit-content;
  display: grid;
  position: relative;
}

/* ---- Calculator window ---- */
.container {
  background-color: var(--calc-bg);
  box-shadow: var(--shadow-sm);
  border-radius: var(--calc-radius);
  z-index: 1;
  overflow: hidden;
}

.container,
.behind-button {
  grid-column: 1 / 2;
  grid-row: 1 / 2;
}

/* ---- Behind button (re-open after close) ---- */
.behind-button {
  display: grid;
  place-items: center;
  cursor: pointer;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.behind-button.visible {
  opacity: 1;
  pointer-events: auto;
}

.behind-button button {
  width: 160px;
  height: 60px;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  color: var(--text-primary);
  font-family: var(--font-system);
  font-weight: 600;
  font-size: 0.85rem;
  border: none;
  background: linear-gradient(
    319deg,
    rgba(131, 58, 180, 1) 0%,
    rgba(253, 29, 29, 1) 50%,
    rgba(252, 176, 69, 1) 100%
  );
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.behind-button button:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 30px rgba(131, 58, 180, 0.4);
}

.behind-button button:active {
  transform: scale(0.97);
}

/* ---- macOS traffic-light buttons ---- */
.mac-buttons {
  display: inline-flex;
  gap: 8px;
  padding: 12px 14px 4px;
}

.mac-btn {
  width: 13px;
  height: 13px;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  cursor: pointer;
  transition: transform var(--transition-fast);
  border: none;
  border-radius: 50%;
  overflow: hidden;
  padding: 0;
}

.mac-btn:active {
  transform: scale(0.85);
}

.mac-btn.close {
  background-image: url(../assets/svg/1-close-1-normal.svg);
}
.mac-btn.close:hover {
  background-image: url(../assets/svg/2-close-2-hover.svg);
}

.mac-btn.minimize {
  background-image: url(../assets/svg/2-minimize-1-normal.svg);
}
.mac-btn.minimize:hover {
  background-image: url(../assets/svg/2-minimize-2-hover.svg);
}

.mac-btn.maximize {
  background-image: url(../assets/svg/3-maximize-1-normal.svg);
}
.mac-btn.maximize:hover {
  background-image: url(../assets/svg/3-maximize-2-hover.svg);
}

/* ---- Display / Output ---- */
.display {
  display: flex;
  justify-content: flex-end;
  align-items: flex-end;
  padding-bottom: 4px;
  height: 60px;
  width: 100%;
  overflow: hidden;
}

.display input {
  color: var(--text-primary);
  background-color: transparent;
  border: none;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 300;
  text-align: right;
  width: 100%;
  padding-right: 0.6rem;
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
}

.display input:focus {
  outline: none;
}

/* Hide scrollbar but keep scroll */
.display input::-webkit-scrollbar {
  height: 2px;
}
.display input::-webkit-scrollbar-thumb {
  background: var(--btn-orange);
  border-radius: 2px;
}

/* ---- Mode toggle bar ---- */
#mode-bar {
  width: 95%;
  max-width: var(--calc-max-width);
}

.scntic-modes {
  width: 100%;
  height: fit-content;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
}

.scntic-modes button {
  width: 100%;
  height: 42px;
  font-family: var(--font-system);
  font-weight: 700;
  color: var(--text-secondary);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  user-select: none;
  -webkit-user-select: none;
  transition: background-color var(--transition-fast),
    opacity var(--transition-fast);
}

.scntic-modes button:active {
  opacity: 0.7;
}

/* ---- Mode wrapper (123 / Fx buttons) ---- */
.mode-wrapper,
.credit-wrapper {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: 700;
  border-radius: 10px;
  box-shadow: var(--shadow-lg);
}

/* Mode toggle buttons */
.mode-btn {
  transition: background-color var(--transition-fast);
}

.mode-btn--std {
  border-radius: 10px 0 0 10px;
  background-color: var(--btn-lightgray);
}
.mode-btn--std:hover,
.mode-btn--std.active {
  background-color: var(--btn-hover-gray);
}

.mode-btn--sci {
  border-radius: 0 10px 10px 0;
  background-color: var(--btn-orange);
}
.mode-btn--sci:hover,
.mode-btn--sci.active {
  background-color: var(--btn-hover-orange);
}

/* Credit / author link */
.credit-wrapper .credit-btn {
  max-width: 100%;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: linear-gradient(
    to right,
    var(--btn-lightgray) 0%,
    var(--btn-lightgray) 5%,
    var(--btn-orange) 60%,
    var(--btn-orange) 100%
  );
}

.credit-btn a {
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  transition: text-shadow var(--transition-fast);
}

.credit-btn a:hover {
  text-shadow: 0 0 10px var(--text-secondary);
}

/* ---- Minimize / Maximize state classes ---- */
body.minimized main {
  max-width: var(--calc-minimized-width);
}
body.minimized #mode-bar {
  max-width: var(--calc-minimized-width);
}
body.minimized .calc-grid {
  height: 330px;
}

body.maximized main {
  max-width: var(--calc-maximized-width);
}
body.maximized #mode-bar {
  max-width: var(--calc-maximized-width);
}
body.maximized .calc-grid {
  height: 450px;
}

/* ---- Mode switching ---- */
.calculator {
  display: grid;
  position: relative;
}

.calculator > .calc-grid {
  grid-area: 1 / 1;
  transition: opacity var(--transition-normal);
}

.calc-grid.hidden {
  opacity: 0;
  pointer-events: none;
}