/* AI Interactive Fiction - Web UI Styles */

/* Variables */
:root {
  --text-color: #222;
  --background-color: #f8f4e8;
  --book-shadow: rgba(0, 0, 0, 0.3);
  --highlight-color: #783422;
  --control-color: #555;
  --light-color: rgba(255, 240, 210, 0.6);
  --viewport-aspect-ratio: 1.6;
  --book-width: 1000px;
  --book-height: 620px;
  --input-bg: rgba(255, 255, 255, 0.6);
  --img-aspect-ratio: 1.613;
  --aspect-ratio: min(var(--viewport-aspect-ratio), var(--img-aspect-ratio));
  font-size: calc(var(--book-height)/(34 * 1.5));
}

/* Font faces */
@font-face {
  font-family: "EB Garamond";
  src: url("../fonts/EBGaramond12-Regular.otf") format("opentype");
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: "EB Garamond";
  src: url("../fonts/EBGaramond12-Italic.otf") format("opentype");
  font-weight: normal;
  font-style: italic;
}

/* Global styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  font-family: "EB Garamond", serif;
  color: var(--text-color);
  background-color: #222;
  background-image: url(../images/brown-wooden-flooring.jpg);
  background-size: cover;
  background-position: center;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  padding: 0;
}

body.switched {
  transition: color 0.6s, background-color 0.6s;
}

h1 {
  font-size: 2rem;
  margin-bottom: 0.8rem;
  text-align: center;
  text-transform: uppercase;
  font-weight: normal;
}

h2 {
  font-size: 1.2rem;
  text-align: center;
  font-weight: normal;
}

h3 {
  font-size: 1.2rem;
  text-align: center;
  font-weight: normal;
}

.header {
  padding-top: 3rem;
  padding-bottom: 3rem;
}

.byline {
  font-feature-settings: "smcp";
}

.separator {
  text-align: center;
}

p, #ruler, #indent {
  font-size: 1.2rem;
  line-height: 1.2;
  color: rgba(0,0,0,0.9);
  margin-block-end: 0;
  margin-block-start: 0;
}

a {
  transition: color 0.6s;
  color: #333;
  font-style: italic;
  text-decoration-thickness: 1px;
}

a:hover {
  color: black;
  transition: color 0.1s;
}

strong {
  color: black;
  font-weight: bold;
}

.container .hide {
  opacity: 0.0;
}

.container .invisible {
  display: none;
}

.container > *, .container > p > * {
  opacity: 1.0;
  transition: opacity 0.5s;
}

#command_input {
  position: absolute;
  bottom: 1rem;
  left: 3rem;
  right: 3rem;
  display: flex;
}

#player_input {
  flex-grow: 1;
  font-family: inherit;
  font-size: 1.2rem;
  padding: 0.5rem;
  border: 1px solid rgba(0,0,0,0.3);
  border-radius: 0.25rem;
  background: rgba(255,255,255,0.9);
}

#submit_command {
  margin-left: 0.5rem;
  font-family: inherit;
  font-size: 1.2rem;
  padding: 0.5rem 1rem;
  border: 1px solid rgba(0,0,0,0.3);
  border-radius: 0.25rem;
  background: rgba(255,255,255,0.9);
  cursor: pointer;
}

#submit_command:hover {
  background: rgba(255,255,255,1);
}

#controls {
  z-index: 4;
  text-align: center;
  position: absolute;
  right: 0;
  left: 0;
  top: 1rem;
  padding-top: 1rem;
  user-select: none;
  transition: color 0.6s, background 0.6s;
}

#controls [disabled] {
  color: #999;
}

#controls input[type=range] {
  vertical-align: middle;
  -webkit-appearance: none;
  appearance: none;
  width: 5rem;
  cursor: pointer;
  outline: none;
  height: 0.5rem;
  background-color: transparent;
  box-sizing: border-box;
  border: 1px solid black;
  border-radius: 0.25rem;
  overflow: hidden;
}

#controls input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  height: 0.5rem;
  width: 0.5rem;
  border-radius: 0.25rem;
  background-color: rgba(0,0,0,0.9);
  border: none;
  box-shadow: -407px 0 0 400px rgba(0,0,0,0.3);
}

#controls input::-webkit-runnable-track {
  -webkit-appearance: none;
  appearance: none;
  height: 0.5rem;
  border-radius: 0.25rem;
}

#controls>a:not(:last-of-type):after, #controls>span::after {
  content: " | ";
}

#book {
  position: relative;
  width: var(--book-width);
  height: var(--book-height);
  background-image: url('../images/book-3057904.png');
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  perspective: 500px;
  perspective-origin: 50% 50%;
  max-width: 90vw;
  max-height: 90vh;
  margin: 0 auto;
  transform-origin: center center;
}

#page_left, #page_right {
  position: absolute;
  top: 5%;
  bottom: 10%;
  width: 39%;
  box-sizing: border-box;
  padding: 0 3rem 1rem 1rem;
  overflow: visible;
  overflow-y: scroll;
  opacity: 0.95;
  mix-blend-mode: darken;
}

#story {
  overflow-x: visible;
  margin-bottom: 3rem;
}

#page_left {
  left: 11.5%;
}

#page_right {
  right: 7%;
  height: calc(28 * 1.2 * 1.2rem);
  padding-bottom: 4rem;
}

.user-input {
  font-style: italic;
  color: #555;
  margin-top: 1rem;
}

.narrative {
  margin-top: 1rem;
}

/* ===== Scrollbar CSS ===== */
/* Firefox */
* {
  scrollbar-width: auto;
  scrollbar-color: #000000 rgba(255,255,255,0);
}

/* Chrome, Edge, and Safari */
*::-webkit-scrollbar {
  width: calc(1rem/4);
}

*::-webkit-scrollbar-track {
  background: rgba(255,255,255,0.0);
}

*::-webkit-scrollbar-thumb {
  background-color: #000000;
  border-radius: calc(1rem/4/2);
  border: none;
}

.fade-in {
  animation: fadeIn ease 1s;
  -webkit-animation: fadeIn ease 1s;
  -moz-animation: fadeIn ease 1s;
  -o-animation: fadeIn ease 1s;
  -ms-animation: fadeIn ease 1s;
}

@keyframes fadeIn {
  0% {opacity:0;}
  100% {opacity:1;}
}

@-moz-keyframes fadeIn {
  0% {opacity:0;}
  100% {opacity:1;}
}

@-webkit-keyframes fadeIn {
  0% {opacity:0;}
  100% {opacity:1;}
}

@-o-keyframes fadeIn {
  0% {opacity:0;}
  100% {opacity:1;}
}

@-ms-keyframes fadeIn {
  0% {opacity:0;}
  100% {opacity:1;}
}

#ruler, #indent {
  visibility: hidden;
  position: absolute;
  top: -8000px;
  width: auto;
  display: inline;
  left: -8000px;
  text-indent: 0;
  text-align: left;
  hyphens: none;
  margin-block-end: 0;
}

#lighting {
  position: absolute;
  top: -35%;
  left: -35%;
  width: 180%;
  height: 180%;
  animation: gradient-animation-shrink 1s 1;
  background: radial-gradient(circle, rgba(255,240,182,0.1) 0%, rgba(255,237,165,0.2) 20%, rgba(0,0,0,0.9) 65%, rgba(0,0,0,0.9) 100%);
  mix-blend-mode: color-burn;
  pointer-events: none;
  z-index: 999;
}

@keyframes gradient-animation-grow {
  0% { width: 180%; height: 180%; left: -35%; top: -35%; }
  100% { width: 170%; height:  170%; left: -33%; top: -33%; }
}  

@keyframes gradient-animation-shrink {
  0% { width: 170%; height:  170%; left: -33%; top: -33%; }
  100% { width: 180%; height: 180%; left: -35%; top: -35%; }
}

.loading-indicator {
  display: inline-block;
  position: relative;
  width: 1.2rem;
  height: 1.2rem;
  margin-left: 0.5rem;
}
.loading-indicator div {
  box-sizing: border-box;
  display: block;
  position: absolute;
  width: 1rem;
  height: 1rem;
  border: 0.2rem solid #000;
  border-radius: 50%;
  animation: loading-indicator 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
  border-color: #000 transparent transparent transparent;
}
.loading-indicator div:nth-child(1) {
  animation-delay: -0.45s;
}
.loading-indicator div:nth-child(2) {
  animation-delay: -0.3s;
}
.loading-indicator div:nth-child(3) {
  animation-delay: -0.15s;
}
@keyframes loading-indicator {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Media queries for responsive design */
@media (max-width: 768px) {
  :root {
    font-size: calc(var(--book-height)/(40 * 1.5));
  }
  
  #book {
    max-width: 95vw;
    max-height: 95vh;
  }
  
  #page_left, #page_right {
    width: 38%;
    padding: 0 1rem 1rem 1rem;
  }
}

/* Ensure responsive book sizing */
@media (max-width: 1200px) {
  #book {
    transform: scale(0.95);
    transform-origin: center center;
  }
}

@media (max-width: 992px) {
  #book {
    transform: scale(0.85);
    transform-origin: center center;
  }
}

@media (max-width: 768px) {
  #book {
    transform: scale(0.75);
    transform-origin: center center;
  }
}

@media (max-width: 576px) {
  #book {
    transform: scale(0.65);
    transform-origin: center center;
  }
}

/* Additional responsive fix to ensure book remains centered */
@media (max-height: 700px) {
  #book {
    transform: scale(0.8);
    transform-origin: center center;
  }
}

@media (max-height: 600px) {
  #book {
    transform: scale(0.7);
    transform-origin: center center;
  }
}