.body {
  font-family: "Roboto", "Microsoft YaHei", "PingFang SC", sans-serif;
  font-optical-sizing: auto;
  font-weight: 400;
  font-style: normal;
  font-variation-settings:
    "wdth" 100;
}

.opening {
  display: flex;
  align-items: center;
  margin-top: 160px;
  flex-direction: column;
  opacity: 0; 
  animation: fadeIn 1s ease-in forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px); 
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#opening-title {
  font-size: 80px;
  color: #F9F9F9;
  font-weight: 700;
  display: block;
  margin-bottom: 0;
}

#opening-tips {
  font-size: 18px;
  color: #F9F9F9;
  font-weight: 400;
  display: block;
  margin-top: -6px;
}

#background-picture {
  position: fixed; 
  bottom: 0;
  left: 0;
  width: 100vw; 
  height: auto; 
  object-fit: cover; 
  z-index: -1;
}

button {
  height: auto;
  width: auto;
}

button:hover {
  cursor: pointer;
}

#drift-bottle-button-1, #drift-bottle-button-2, #drift-bottle-button-3{
  position: absolute;
  border: none;
  background: none;
  transform: 
  scaleX(-1) rotate(45deg);
  border-radius: 50%;
  
}

#drift-bottle-image-1 {
  height: 60px;
  width: auto;
}

#drift-bottle-image-2 {
  height: 70px;
  width: auto;
}

#drift-bottle-image-3 {
  height: 80px;
  width: auto;
}

#drift-bottle-1, #drift-bottle-2, #drift-bottle-3 {
  position: relative;
}

#drift-bottle-1 {
 height: 100px;
 width: 600px;
 margin-top: 66px;
 margin-left: 300px;
}

#drift-bottle-2 {
 height: 100px;
 width: 700px;
 margin-top: 20px;
 margin-left: 550px;
}

#drift-bottle-3 {
 height: 100px;
 width: 700px;
 margin-top: 20px;
 margin-left: 600px;
}

#create-drift-bottle-button, #check-response-button{
  border: none;
  background: none;
  border-radius: 50%;
}

#create-drift-bottle-image {
  height: 120px;
  width: auto;
}

#create-drift-bottle {
  position: fixed;
  bottom: 30px;
  right: 30px;
}

#check-response {
  position: fixed;
  top: 10px;
  right: 30px;
}

#meteor-image {
  height: 120px;
  width: auto;
}

#check-response-button {
  transform: 
  scaleX(-1) rotate(-25deg);
}

#parchment {
  position: relative;
  height: 700px;
  width: auto;  
}

#create-parchment {
  position: fixed;
  top: 0;
  left: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  width: 100vw;
  background-color: rgba(0, 0, 0, 0.8);
}

#parchment-image {
  height: 100%;
  width: auto;
}

.parchment-pages {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  justify-content: space-between;
  flex-direction: column;
  height: 100%;
  width: 100%;
}

#title-input {
  margin: 40px 40px 0 35px;
  width: auto;
  height: 60px;
}

#title {
  width: 340px;
}

#text-input {
  margin: 0px 40px 0px 35px;
  height: 350px;
  width: auto;
}

#text-area {
  width: 100%;
  height: 100%;
}

#details-input {
  margin: 0px 40px 0px 35px;
  padding-top: 8px;
  display: flex;
  justify-content: space-between;
}

#continue, #decision-buttons {
  margin: 0px 35px 40px 30px;
  display: flex;
  justify-content: center;
  align-items: center;
}

#nickname {
  width: 120px;
}

#cancel-button {
  position: absolute;
  padding: 2px 2px 0 2px;
  right: 0;
  top: 0;
  border-radius: 50%;
  background: none;
  border: none;
  z-index: 100;
}

#cancel-icon {
  height: 35px;
  width: auto;
}

/* GPT */

.parchment-button {
  --paper-light: #f6e7c2;   /* 纸面浅色 */
  --paper-mid:   #e9d5a2;   /* 纸面中间色 */
  --paper-deep:  #d7bd86;   /* 边缘加深 */
  --edge:        #a2773d;   /* 边框颜色 */
  --ink:         #4a3318;   /* 文字“墨水”色 */

  appearance: none;
  border: 2px solid var(--edge);
  padding: 12px 24px;
  border-radius: 18px;
  font: 600 16px/1.1 system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    /* 轻微纸张纹理（条纹） */
    repeating-linear-gradient( 8deg, #0000 0 6px, #00000010 6px 7px ),
    /* 边缘加深的“烘焙感” */
    radial-gradient(120% 180% at 50% 0%, #0000 60%, #00000010 100%),
    /* 纸面主色过渡 */
    radial-gradient(140% 160% at 50% 120%, var(--paper-deep), var(--paper-mid) 40%, var(--paper-light) 100%);
  box-shadow:
    0 4px 0 0 #8b642f,            /* 下沿硬阴影，像厚纸 */
    0 12px 18px -6px #00000040,   /* 投影 */
    inset 0 3px 6px #ffffff66,    /* 内高光 */
    inset 0 -4px 8px #00000014;   /* 内暗角 */
  text-shadow: 0 1px 0 #fff8;
  cursor: pointer;
  position: relative;
  transition: transform 120ms ease, box-shadow 120ms ease, filter 120ms ease;
}

/* 不规则外形：用滤镜 + 轻微波浪边缘 */
.parchment-button::before,
.parchment-button::after {
  content: "";
  position: absolute;
  left: 10px; right: 10px;
  height: 8px;
  border-radius: 50%;
  filter: blur(6px);
  z-index: -1;
}
.parchment-button::before { bottom: -6px; background: #00000030; } /* 投影晕 */
.parchment-button::after  { top: -6px;  background: #ffffff60; }  /* 顶部泛白 */

.parchment-button:hover {
  transform: translateY(-2px);
  box-shadow:
    0 6px 0 0 #7b592a,
    0 16px 22px -6px #00000045,
    inset 0 3px 7px #ffffff80,
    inset 0 -5px 10px #00000018;
  filter: saturate(1.05);
}

.parchment-button:active {
  transform: translateY(2px);
  box-shadow:
    0 2px 0 0 #6f4f22,
    0 8px 14px -6px #00000055,
    inset 0 2px 4px #ffffff70,
    inset 0 -3px 7px #00000020;
}

.parchment-button:focus-visible {
  outline: 3px dashed #8b642f;
  outline-offset: 4px;
}

/* 禁用态 */
.parchment-button:disabled {
  cursor: not-allowed;
  filter: grayscale(0.25) brightness(0.95);
  opacity: 0.8;
  box-shadow:
    0 3px 0 0 #927242,
    0 10px 16px -6px #00000035,
    inset 0 3px 6px #ffffff66,
    inset 0 -4px 8px #00000014;
}

/* 公共基础 */
#text-input, 
#details-input,
#title-input,
#content-preview {
  background: #f6e7c2;
  background: radial-gradient(140% 160% at 50% 120%, #d7bd86, #e9d5a2 40%, #f6e7c2 100%);
  border: 2px solid #a2773d;
  border-radius: 18px;
  box-shadow:
    0 4px 0 0 #8b642f,
    0 8px 12px -4px rgba(0, 0, 0, 0.35),
    inset 0 2px 5px rgba(255, 255, 255, 0.5),
    inset 0 -3px 6px rgba(0, 0, 0, 0.1);
}

/* 文本域 textarea */
#text-area {
  resize: none; /* 禁止调整大小 */
  border: none;
  outline: none;
  font-size: 16px;
  font-family: "Roboto", "Microsoft YaHei", "PingFang SC", sans-serif;
  color: #4a3318;
  background: none; /* 背景透出羊皮纸 */
  line-height: 1.4;
  padding: 16px 16px 16px 16px;
  font-weight: 400;
}

/* label 统一样式 */
#info-input label {
  margin-left: 20px;
  font-weight: 600;
  color: #4a3318;
  margin-right: 6px;
  font-size: 16px;
  text-shadow: 0 1px 0 #fff8;
}

/* 输入框、下拉框 */
#info-input input,
#info-input select,
#content-preview {
  border: 2px solid #a2773d;
  margin-left: 20px;
  border-radius: 10px;
  font-size: 16px;
  font-family: inherit;
  color: #4a3318;
  background: #f6e7c2;
  box-shadow:
    inset 0 2px 4px rgba(255, 255, 255, 0.6),
    inset 0 -2px 4px rgba(0, 0, 0, 0.1);
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}

/* 聚焦时 */
#info-input input:focus,
#info-input select:focus {
  outline: none;
  box-shadow:
    0 0 0 2px #d7bd86,
    inset 0 2px 5px rgba(255, 255, 255, 0.8),
    inset 0 -3px 6px rgba(0, 0, 0, 0.15);
  transform: translateY(-1px);
}

/* 内部输入块的布局 */
#nickname-input,
#country-input{
  margin-bottom: 12px;
}

#content-preview {
  margin: 40px 35px 0 35px;
  height: 550px;
  width: auto;
  display: flex;
  flex-direction: column;
  align-items: left;
  justify-content: space-between;
}

#revise-button {
  margin-right: 60px;
}

#title-preview, #text-preview, #details-preview {
  margin: 16px 16px 16px 16px;
}