/* =====================================================================
 * 星鹊软件工作室 Synkue Studio · 自定义样式
 * 该文件用于补充 Tailwind 之外的样式：动画、可复用组件、滚动动效等
 * 修改原则：保持轻量、保持简洁、避免覆盖 Tailwind 的工具类
 * ===================================================================== */

/* ---------- 全局基础 ---------- */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;     /* 锚点滚动时为固定导航预留空间 */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  /* 防止移动端横向滚动 */
  overflow-x: hidden;
}

/* 自定义滚动条（仅桌面 webkit） */
@media (min-width: 1024px) {
  ::-webkit-scrollbar { width: 10px; height: 10px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb {
    background: rgba(100, 116, 139, .35);
    border-radius: 999px;
  }
  ::-webkit-scrollbar-thumb:hover { background: rgba(100, 116, 139, .6); }
}

/* 选中文字颜色 */
::selection {
  background: rgba(6, 182, 212, .25);
  color: inherit;
}

/* ---------- 导航栏：滚动时的毛玻璃效果 ---------- */
#navbar.scrolled {
  background: rgba(255, 255, 255, .72);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid rgba(15, 23, 42, .06);
  box-shadow: 0 4px 20px -8px rgba(15, 23, 42, .08);
}

.dark #navbar.scrolled {
  background: rgba(10, 22, 40, .72);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
  box-shadow: 0 4px 20px -8px rgba(0, 0, 0, .35);
}

/* 导航链接下划线动画 */
.nav-link {
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 6px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #1e3a5f, #06b6d4);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width .3s ease;
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 60%;
}

/* ---------- Hero 网格背景（科技感） ---------- */
.hero-grid {
  background-image:
    linear-gradient(rgba(15, 23, 42, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, .08) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 40%, transparent 100%);
}

.dark .hero-grid {
  background-image:
    linear-gradient(rgba(148, 163, 184, .12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, .12) 1px, transparent 1px);
}

/* ---------- 滚动入场动画 ---------- */
[data-animate] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s cubic-bezier(.22,.61,.36,1), transform .8s cubic-bezier(.22,.61,.36,1);
  will-change: opacity, transform;
}
[data-animate].in-view {
  opacity: 1;
  transform: translateY(0);
}

/* 减弱动画偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  [data-animate] { opacity: 1; transform: none; }
}

/* =====================================================================
 * 服务卡片
 * ===================================================================== */
.service-card {
  position: relative;
  padding: 1.75rem;
  border-radius: 1rem;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, .06);
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  overflow: hidden;
}
.dark .service-card {
  background: rgba(255, 255, 255, .03);
  border-color: rgba(255, 255, 255, .08);
}
.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(6, 182, 212, .08), transparent 60%);
  opacity: 0;
  transition: opacity .35s ease;
  pointer-events: none;
}
.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(6, 182, 212, .35);
  box-shadow: 0 22px 48px -28px rgba(6, 182, 212, .35);
}
.service-card:hover::before { opacity: 1; }

.service-icon {
  display: inline-flex;
  width: 3rem;
  height: 3rem;
  margin-bottom: 1.1rem;
  border-radius: .85rem;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(30, 58, 95, .08), rgba(6, 182, 212, .12));
  color: #06b6d4;
  transition: transform .35s ease;
}
.service-card:hover .service-icon { transform: scale(1.08) rotate(-4deg); }
.service-icon svg { width: 1.4rem; height: 1.4rem; }

.dark .service-icon {
  background: linear-gradient(135deg, rgba(34, 211, 238, .15), rgba(34, 211, 238, .05));
  color: #22d3ee;
}

.service-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: .55rem;
  color: #0f2038;
}
.dark .service-title { color: #f1f5f9; }

.service-desc {
  font-size: .92rem;
  line-height: 1.7;
  color: rgb(71, 85, 105);
  margin-bottom: 1rem;
}
.dark .service-desc { color: rgb(203, 213, 225); }

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
}
.service-tags li {
  font-size: .72rem;
  font-weight: 500;
  padding: .25rem .65rem;
  border-radius: 999px;
  background: rgba(6, 182, 212, .08);
  color: #0891b2;
}
.dark .service-tags li {
  background: rgba(34, 211, 238, .12);
  color: #67e8f9;
}

/* =====================================================================
 * 技术栈卡片
 * ===================================================================== */
.stack-card {
  padding: 1.5rem;
  border-radius: 1rem;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, .06);
  transition: all .35s ease;
}
.dark .stack-card {
  background: rgba(255, 255, 255, .03);
  border-color: rgba(255, 255, 255, .08);
}
.stack-card:hover {
  transform: translateY(-4px);
  border-color: rgba(6, 182, 212, .35);
  box-shadow: 0 16px 40px -22px rgba(6, 182, 212, .35);
}

.stack-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1.1rem;
}

.stack-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: .7rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.stack-icon svg { width: 1.25rem; height: 1.25rem; }

.stack-title {
  font-size: 1rem;
  font-weight: 700;
}

.stack-tags {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .4rem;
}
.stack-tags li {
  font-size: .82rem;
  text-align: center;
  padding: .45rem .5rem;
  border-radius: .5rem;
  background: rgba(15, 23, 42, .04);
  color: rgb(71, 85, 105);
  font-weight: 500;
}
.dark .stack-tags li {
  background: rgba(255, 255, 255, .04);
  color: rgb(203, 213, 225);
}

/* 横向徽章流 */
.badge-pill {
  padding: .5rem 1rem;
  border-radius: 999px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, .08);
  font-size: .8rem;
  font-weight: 500;
  color: rgb(51, 65, 85);
  transition: all .3s ease;
}
.badge-pill:hover {
  border-color: #06b6d4;
  color: #06b6d4;
  transform: translateY(-2px);
}
.dark .badge-pill {
  background: rgba(255, 255, 255, .04);
  border-color: rgba(255, 255, 255, .08);
  color: rgb(203, 213, 225);
}
.dark .badge-pill:hover { color: #22d3ee; border-color: #22d3ee; }

/* =====================================================================
 * 案例卡片
 * ===================================================================== */
.case-card {
  border-radius: 1rem;
  overflow: hidden;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, .06);
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  cursor: pointer;
}
.dark .case-card {
  background: rgba(255, 255, 255, .03);
  border-color: rgba(255, 255, 255, .08);
}
.case-card:hover {
  transform: translateY(-8px);
  border-color: rgba(6, 182, 212, .35);
  box-shadow: 0 28px 56px -28px rgba(6, 182, 212, .3);
}

.case-thumb {
  position: relative;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
/* 案例缩略图：柔和高光 + 细微网格质感（统一品牌风） */
.case-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 24px 24px;
}
.case-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(255,255,255,.15), transparent 55%);
}
.case-thumb-text {
  position: relative;
  z-index: 2;
  font-size: 1.25rem;
  font-weight: 700;
  color: rgba(255, 255, 255, .92);
  letter-spacing: .05em;
  text-shadow: 0 2px 12px rgba(0,0,0,.2);
}
.case-card:hover .case-thumb-text { transform: scale(1.05); }
.case-thumb-text { transition: transform .35s ease; }

.case-body { padding: 1.4rem; }
.case-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: .5rem;
  color: #0f2038;
}
.dark .case-title { color: #f1f5f9; }

.case-desc {
  font-size: .88rem;
  line-height: 1.65;
  color: rgb(71, 85, 105);
  margin-bottom: .9rem;
}
.dark .case-desc { color: rgb(203, 213, 225); }

.case-tags { display: flex; flex-wrap: wrap; gap: .35rem; }
.case-tags span {
  font-size: .7rem;
  font-weight: 500;
  padding: .22rem .55rem;
  border-radius: .35rem;
  background: rgba(15, 23, 42, .05);
  color: rgb(71, 85, 105);
}
.dark .case-tags span {
  background: rgba(255, 255, 255, .06);
  color: rgb(203, 213, 225);
}

/* =====================================================================
 * 为什么选择我们
 * ===================================================================== */
.why-card {
  position: relative;
  padding: 2rem 1.6rem;
  border-radius: 1rem;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, .06);
  transition: all .35s ease;
  overflow: hidden;
}
.dark .why-card {
  background: rgba(255, 255, 255, .03);
  border-color: rgba(255, 255, 255, .08);
}
.why-card:hover {
  transform: translateY(-4px);
  border-color: rgba(6, 182, 212, .35);
  box-shadow: 0 18px 40px -22px rgba(6, 182, 212, .3);
}

.why-num {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #1e3a5f, #06b6d4);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 1rem;
  font-family: 'Inter', sans-serif;
}

.why-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: .55rem;
  color: #0f2038;
}
.dark .why-title { color: #f1f5f9; }

.why-desc {
  font-size: .88rem;
  line-height: 1.7;
  color: rgb(71, 85, 105);
}
.dark .why-desc { color: rgb(203, 213, 225); }

/* =====================================================================
 * 联系板块（浅色简洁风）
 * ===================================================================== */
.info-tile {
  display: block;
  padding: 1.4rem 1.5rem;
  border-radius: 1rem;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, .06);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  text-decoration: none;
  color: inherit;
}
.dark .info-tile {
  background: rgba(255, 255, 255, .03);
  border-color: rgba(255, 255, 255, .08);
}
.info-tile:hover {
  transform: translateY(-3px);
  border-color: rgba(6, 182, 212, .35);
  box-shadow: 0 16px 36px -22px rgba(6, 182, 212, .3);
}

.info-tile-icon {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: .7rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(6, 182, 212, .1);
  color: #06b6d4;
  margin-bottom: .9rem;
}
.dark .info-tile-icon {
  background: rgba(34, 211, 238, .15);
  color: #22d3ee;
}
.info-tile-icon svg { width: 1.15rem; height: 1.15rem; }

.info-tile-label {
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: rgb(100, 116, 139);
  margin-bottom: .3rem;
}
.dark .info-tile-label { color: rgb(148, 163, 184); }

.info-tile-value {
  font-size: 1rem;
  font-weight: 700;
  color: #0f2038;
  letter-spacing: -.01em;
}
.dark .info-tile-value { color: #f1f5f9; }

.info-tile-sub {
  font-size: .78rem;
  color: rgb(100, 116, 139);
  margin-top: .25rem;
}
.dark .info-tile-sub { color: rgb(148, 163, 184); }

/* =====================================================================
 * 页脚社交图标
 * ===================================================================== */
.footer-social {
  width: 2rem;
  height: 2rem;
  border-radius: .5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, .04);
  color: rgb(100, 116, 139);
  transition: all .25s ease;
}
.footer-social:hover {
  background: linear-gradient(135deg, #1e3a5f, #06b6d4);
  color: #ffffff;
  transform: translateY(-2px);
}
.dark .footer-social {
  background: rgba(255, 255, 255, .04);
  color: rgb(148, 163, 184);
}

/* =====================================================================
 * 回到顶部按钮：可见状态
 * ===================================================================== */
#back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* =====================================================================
 * 响应式微调
 * ===================================================================== */
@media (max-width: 640px) {
  .case-thumb { height: 150px; }
  .case-thumb-text { font-size: 1.05rem; }
  .why-num { font-size: 2rem; }
}