/*  全站 Reset + 變數設定 */
:root {
  --primary-color: #d4d4d4;
  --secondary-color: #005371;
  --bg-color: #f4f4f4;
  --text-color: #000;
  --muted-text: #c4c4c4;
  --border-color: #e5e7eb;

  --dark-bg: #000;
  --dark-text: #ffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: var(--dark-bg);
    --text-color: var(--dark-text);
  }
}
/* 預設字體大小：PC/Desktop */
h1 { font-size: 48px; }
h2 { font-size: 36px; }
h3 { font-size: 28px; }
h4 { font-size: 24px; }
h5 { font-size: 20px; }
h6 { font-size: 16px; }
/* 平板字體大小調整 */
@media (max-width: 1024px) {
  h1 { font-size: 40px; }
  h2 { font-size: 32px; }
  h3 { font-size: 26px; }
  h4 { font-size: 22px; }
  h5 { font-size: 18px; }
  h6 { font-size: 16px; }
}
/* 手機字體大小調整 */
@media (max-width: 768px) {
  h1 { font-size: 32px; }
  h2 { font-size: 28px; }
  h3 { font-size: 24px; }
  h4 { font-size: 20px; }
  h5 { font-size: 16px; }
  h6 { font-size: 14px; }
}
----------------------------
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body, h1, h2, h3, h4, h5, h6,
p, a, blockquote, pre,
dl, dd, ol, ul, figure,
form, fieldset, legend,
input, textarea, select, button,
label, summary {
  margin: 0;
  padding: 0;
  /* font: inherit; */
  /* vertical-align: baseline; */
  /* color: inherit; */
  text-decoration: none;
  /* line-height: inherit; */
  /* background: transparent; */
  border: 0;
  box-sizing: border-box;
}
body {
  font-family: system-ui, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1;
  max-width: 100%;
  /* overflow-x: hidden; */
  /* background-color: transparent; */
}
html {
  max-width: 100%;
  /* overflow-x: hidden; */
  scroll-behavior: smooth;
}

.background {
  background-image: url("images/bg.jpg");
  background-attachment: fixed;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  height: 100vh;
  z-index: -999;
  /* filter: blur(1px); */
}
/* nav */
.navbar-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: calc(50px + 28px);
  /* background-color: var(--bg-color); */
  z-index: 998;
}
.navbar {
  width: 0%;
  display: flex;
  margin: auto;
  position: sticky;
  top: 50px;
  transition: all .3s;
  height: 28px;
  justify-content: center;
  /* background-color: #f4f4f4ee; */
  background-color: #f4f4f47b;
  backdrop-filter: blur(3px);
  /* border: .1px solid var(--text-color); */
  z-index: 999;
  align-items: center;
}
.navbar.scrolled {
  width: 70%; 
  z-index: 999;

  margin: auto;
  top: 50px;
  transition: all .3s;
  height: 28px;
  justify-content: space-between;
  background-color: #f4f4f47b;
  backdrop-filter: blur(3px);
  border: .1px solid var(--text-color);
  align-items: center;
}
.navbar.scrolled::before {
  content: "";
  position: fixed;
  top: 0;
  width: 100%;
  background-color: var(--bg-color);
  /* height: 58px; */
  transform: translateY(-100%);
  border-bottom: .1px solid var(--text-color);
}
.navbar-logo {
  color: var(--dark-bg);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all .5s;
  /* border-right: .1px solid var(--text-color); */
  border: .1px solid var(--text-color);
  padding: 0 1.5rem;
  height: 100%;
}
.navbar-logo.scrolled {
  border: none;
  border-right: .1px solid var(--text-color);
}
.navbar-logo h1 {
  font-size: 20px;
  transition: .5s;
  font-weight: 200;
}
.logo.scrolled {
  font-size: 15px;
  font-weight: 400;
}
.navbar-list {
  display: none;
  align-items: center;
}
.navbar-list.scrolled {
    display: flex;
}
.navbar-item {
  padding: 0 1.5rem;
  font-weight: 200;
  font-size: 14px;
  height: 28px;
  transition: all .2s;
  display: flex;
  align-items: center;
  border-left: .1px solid var(--text-color);
}

.navbar-item:hover {
  /* box-shadow: inset 0 0 0 .5px var(--bg-color); */
  background-color: var(--text-color);
  height: 28px;
  font-weight: 300;
  align-items: center;
}
.navbar-item a {
  text-decoration: none;
  color: var(--text-color);
  text-wrap: nowrap;

}
.navbar-item a:hover {
  color: var(--dark-text);
}

/* about */
.about {
  display: flex;
  flex-direction: column;
  margin-top: 50px;
}
.about-img-container {
  width: 60%;
  margin: auto;
  margin-top: 100px;
}
.about-img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  filter: grayscale(80%) brightness(.5);
}
.text-container {
  display: flex;
  margin-bottom: 200px;
}
.text-box-left {
  margin-left: 20%;
  display: grid;
  width: 60%;
  grid-template-columns: 3fr 4fr;

}
.text-box {
  text-align: right;
  padding: 25px 1.5rem 100px 3rem;
  border-left: 1px solid var(--text-color);
}
.text-box h6 {
  font-weight: 100;
  margin-bottom: 30px;
  margin-top: 0;
  /* margin: 0; */
}
.text-box-h2 h2 {
  margin: 0;
}
.text-box-h2 {
  display: inline-block;
  position: sticky;
  top: 78px;
}
.text-box-h2.fixed {
  z-index: 10;
  text-wrap: nowrap;
  /* background-color: var(--bg-color); */
  background-color: #f4f4f4b2;
}
/*  */
.text-box-h2::before {
  content: "";
  position: fixed;
  top: auto; /* 由 JS 控制 top */
  left: 50%;
  transform: translateX(-50%); /* 水平居中 */
  width: 60%;
  height: var(--h2-height); /* 高度跟隨 .text-box-h2（即 h2） */
  background-color: var(--bg-color);
  z-index: -1;
  pointer-events: none;
  display: none;
  transition: width 0.3s ease;
}
.text-box-h2.fixed::before {
  display: block;
  top: 78px;
  backdrop-filter: blur(1px);
  background-color: #f4f4f4b2;
}
.text-box-h2.fixed[data-wide="true"]::before {
  width: 100%; /* 關於背景條改這 */
  background-color: var(--bg-color);
}
.text-box-h2[data-wide="false"]::before {
  width: 60%;
}
/*  */

.underline {
  width: 100%;
  height: 2px;
  background-color: #000;
  margin-bottom: 10px;
}
.text-box-h2 .underline {
  transition: opacity 0.1s ease;
}
.text-box-h2.fixed .underline {
  opacity: 0;
  pointer-events: none;
}
.text-box p {
  word-wrap: break-word;
  font-weight: 300;
  margin-top: 10px;
}
.home-logo {
  margin-top: 25px;
  padding-top: 10px;
  border-top: 1px solid var(--text-color);
  width: 100%;
  font-weight: 600;
  display: flex;
  justify-content: end;
}
.home-logo h1 {
  display: inline-block;
}
.text-box-right {
  width: 15%;
  border-top: 1px solid var(--text-color);
  margin-top: 25px;
}

/* service */
.service-h2 {
  width: 70%;
  margin: auto;
  display: flex;
  justify-content: end;
  position: sticky;
  top: 78px;
  z-index: 10;
  background-color: var(--bg-color);
  /* border-bottom: 1px solid var(--text-color); */
}
.service-h2 h2 {
  margin-bottom: 10px;
  display: inline-block;
}
.service-container {
  width: 70%;
  margin: auto;
}
.service-item {
  width: 100%;
  border: 1px solid #000;
  height: 60vh;
  display: flex;
  margin-bottom: 20vh;
}
.item-img {
  height: auto;
  flex: 1;
  padding: 20px;
  border-right: 1px solid var(--text-color);
}
.item-img img {
  height: 100%;
  width: 100%;
}
.item-text-box {
  flex: 2;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: end;
  justify-content: end;
}
.item-text-box-h3 {
  margin-bottom: 60px;
  display: inline-block;
  /* position: sticky;
  top: calc(78px + 46px);
  z-index: 1000; */
}
.item-text-box-h3 h3 {
  color: #525252;
}
.item-text-box p {
  margin-bottom: 40px;
}
.item-text-box a {
  text-decoration: underline;
  color: var(--muted-color);
}

/* form */
.form-h2 {
  display: flex;
  margin: auto;
  width: 70%;
  position: sticky;
  top: 78px;
  z-index: 10;
  background-color: var(--bg-color);
}
.form-container {
  display: flex;
  margin: auto;
  width: 70%;
  align-items: end;

  flex-direction: column;
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(3, 280px);
  grid-template-rows: repeat(4, 70px);
  grid-template-areas: "form-box1 form-box5 none"
                        "form-box2 form-box5 none"
                        "form-box3 form-box5 none"
                        "form-box4 form-box5 form-box6";
  margin: 15rem 0 80vh 0;
}
.form-box {
  background-color: #00000000;
  border-left: 1px solid #000;
  border-bottom: 1px solid #000;
  padding: 10px;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  outline: none;
  transition: all .4s;
}

.input-wrapper[style*="form-box3"] {
  font-size: 30px;
}
.input-wrapper[style*="form-box1"],
.input-wrapper[style*="form-box5"] {
  border-top: 1px solid var(--text-color);
}
.input-wrapper[style*="form-box5"] {
  border-right: 1px solid var(--text-color);
}
.input-wrapper[style*="form-box5"] {
  align-items: start;
  justify-content: start;
  /* text-wrap: wrap; */
}
.form-box[style*="form-box6"] {
  background-color: var(--text-color);
  color: var(--bg-color);
  font-size: 30px;
}





.input-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column-reverse;
}

.input-wrapper label {
  position: absolute;
  left: 20px;
  top: 50%;
  font-size: 30px;
  color: var(--text-color);
  transition: all 0.3s ease;
  pointer-events: none;
  transform: translateY(-50%);
}

.input-wrapper .form-box {
  display: flex;
  background-color: transparent;
  border-left: 1px solid #000;
  border-bottom: 1px solid #000;
  justify-content: center;
  padding-left: 20px;
  padding-top: 30px;
  font-size: 20px;
  width: 100%;
  height: 100%;
}

.input-wrapper .highlight-bar {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 100%;
  background-color: var(--text-color);
  transition: width 0.3s ease;
  z-index: 0;
}

.input-wrapper:focus-within .highlight-bar {
  width: 10px;
}

.input-wrapper:focus-within label,
.input-wrapper.filled label {
  font-size: 14px;
  top: 14px;
  transform: translateY(-50%);
}
.input-wrapper[style*="form-box5"]:focus-within label,
.input-wrapper.filled[style*="form-box5"] label {
  top: 14px;
  transform: translateY(-50%);
  font-size: 14px;
}
select.form-box {
  background-color: transparent;
  background-image: none;  /* 移除箭头 */
  padding: 10px 40px 10px 20px;  /* 保持原尺寸 */
  font-size: 20px;
  color: var(--text-color);
  appearance: none;  /* 移除浏览器默认样式 */
  -webkit-appearance: none;
  -moz-appearance: none;
  cursor: pointer;
}

/* footer */
.footer {
  display: flex;
  /* width: 100%; */
  /* margin: auto; */
  justify-content: center;
  align-items: center;
  margin: 4rem 4rem;
  color: var(--bg-color);
}
.footer-container {
  width: 100%;
  height: 40vh;
  background-color: var(--dark-bg);
  padding: 4rem;
  min-height: 300px;
}
.footer-h2 {
  width: 100%;
}
.footer-h2 h2 {
  font-size: 14px;
  color: var(--muted-text);
}
.footer-grid {
  display: flex;
  height: 100%;
  justify-content: space-between;
  gap: 2rem;
}
.footer-social {
  display: flex;
  position: relative;
  gap: 10px;
  align-self: end;
  bottom: 20%;
}
.footer-social div {
  border-radius: 999px; 
  border: 1px solid var(--dark-text);
  width: 3rem;
  height: 3rem;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all .3s;
}
.footer-social div:hover {
  box-shadow: 0.15rem 0.15rem var(--muted-text);
  transform: translate(-0.25rem, -0.25rem);
  border: 1px solid var(--bg-color);
  background-color: var(--secondary-color);
}
.footer-social a {
  color: var(--dark-text);
  padding: 1rem;
  border: 1px solid #00000000;
  border-radius: 999px;
}
.footer-social a:hover {
  color: var(--dark-text);
}
.footer-info {
  border: 1px solid var(--dark-text);
  color: var(--dark-text);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: end;
  min-width: 340px;
}
.info-box {
  display: flex;
  gap: 10px;
}
.info-label {
  display: flex;
  flex-direction: column;
  text-align: right;
  line-height: 1.;
}
.info-label label {
  margin-top: 10px;
  /* font-weight: 500; */
}
.info-detail {
  display: flex;
  flex-direction: column;
  text-align: left;
  line-height: 1.;
}
.info-detail p {
  margin-top: 10px;
  color: var(--muted-text);
}
.footer-menu {
  display: flex;
  flex-direction: column;
  width: 400px;
  min-width: 120px;
  text-align: right;
  justify-content: end;
  font-size: 30px;
  color: #808080;
  /* border: 1px solid var(--dark-text); */
}
.footer-menu a {
  color: #525252;
  margin-top: 2px;
  transition: all .5s;
}
.footer-menu a:hover {
  color: var(--dark-text);
  text-decoration: underline;
}
small {
  color: #2b2b2b;
  width: 100%;
}