/* ============================================================
   登录页 —— 自适应布局
   PC（>900px）：全屏山水插画 + 左侧文案 + 右侧登录卡
   移动（≤900px）：插画 Hero 在上 + 登录卡堆叠在下
   ============================================================ */

:root {
  --login-bg: url("/assets/login-lab-asean.jpg");
}

.login-page {
  position: relative; min-height: 100vh; display: flex; flex-direction: column;
  background: #0d3f34 var(--login-bg) center / cover no-repeat fixed;
  color: #fff;
}
/* 全文暗色渐变罩，保证文字可读 */
.login-page::before {
  content: ''; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background: linear-gradient(102deg, rgba(7,32,26,.84) 0%, rgba(7,32,26,.52) 46%, rgba(7,32,26,.20) 100%);
}

/* ---------- 顶栏 ---------- */
.login-nav {
  position: relative; z-index: 3;
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 28px;
  background: rgba(9,45,37,.55); backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.login-nav .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; color: #fff; }
.login-nav .logo-mark {
  width: 40px; height: 40px; border-radius: 11px; border: 1.5px solid rgba(255,255,255,.5);
  display: grid; place-items: center;
}
.login-nav .brand small { display: block; font-size: 10.5px; font-weight: 400; opacity: .72; letter-spacing: .03em; }
.nav-right { display: flex; align-items: center; gap: 10px; }
.ver-chip {
  border: 1px solid rgba(255,255,255,.5); border-radius: var(--r-md);
  padding: 6px 14px; font-size: 13px; font-weight: 600;
}
.entry-chip {
  display: none; align-items: center; gap: 6px;
  border: 1px solid rgba(255,255,255,.35); border-radius: var(--r-md); padding: 7px 14px; font-size: 13px;
}
@media (min-width: 560px) { .entry-chip { display: inline-flex; } }

/* 语言切换器下拉 */
.nav-group { position: relative; display: flex; align-items: center; }
.nav-group-t {
  padding: 6px 12px; border-radius: var(--r-md); font-size: 13px; font-weight: 600;
  color: rgba(255,255,255,.92); cursor: pointer; border: 1px solid rgba(255,255,255,.35);
  white-space: nowrap; user-select: none;
}
.nav-group-t::after { content: '▾'; margin-left: 5px; font-size: 10px; opacity: .6; }
.nav-group:hover > .nav-group-t, .nav-group.open > .nav-group-t { background: rgba(255,255,255,.14); }
.nav-drop {
  display: none; position: absolute; top: calc(100% + 8px); left: 0; min-width: 170px;
  background: #fff; border-radius: 12px; box-shadow: 0 18px 50px rgba(6,30,24,.35);
  padding: 6px; z-index: 400;
}
.nav-drop.right { left: auto; right: 0; max-height: 70vh; overflow-y: auto; }
.nav-group:hover .nav-drop, .nav-group.open .nav-drop { display: block; }
.nav-drop a {
  display: block; padding: 8px 12px; border-radius: 8px;
  font-size: 13px; font-weight: 600; color: #1f3d34; white-space: nowrap; cursor: pointer;
}
.nav-drop a:hover, .nav-drop a.active { background: #eef7f2; color: #14532d; }

/* ---------- 主舞台 ---------- */
.stage {
  position: relative; z-index: 2; flex: 1;
  display: flex; align-items: stretch; justify-content: space-between; gap: 48px;
  width: 100%; max-width: 1280px; margin: 0 auto;
  padding: 30px 48px 24px;
}

/* 左侧文案（PC 靠下对齐，仿参考站） */
.hero-copy {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding-bottom: 7vh;
}
.pass-chip {
  display: inline-flex; align-items: center; gap: 7px; align-self: flex-start;
  border: 1px solid rgba(255,255,255,.45); border-radius: var(--r-md);
  padding: 7px 15px; font-size: 13px; font-weight: 600; background: rgba(255,255,255,.08);
  backdrop-filter: blur(4px);
}
.hero-copy h1 {
  font-size: clamp(38px, 4.6vw, 60px); line-height: 1.28; margin: 22px 0 14px;
  font-weight: 800; letter-spacing: .01em;
  text-shadow: 0 4px 34px rgba(0,0,0,.4);
}
.hero-copy p { margin: 0; font-size: 14.5px; opacity: .9; max-width: 460px; text-shadow: 0 2px 12px rgba(0,0,0,.35); }
.entry-cards { display: flex; gap: 10px; margin-top: 28px; flex-wrap: wrap; }
.entry-card {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.3);
  color: #fff; border-radius: var(--r-md); padding: 12px 18px; font-size: 14px;
  backdrop-filter: blur(4px); transition: background .2s, transform .15s;
}
.entry-card:hover { background: rgba(255,255,255,.22); transform: translateY(-1px); }

/* ---------- 登录卡片 ---------- */
.auth-card {
  width: 462px; flex: none; align-self: center;
  background: rgba(255,255,255,.98); color: var(--ink-900);
  border-radius: 20px; box-shadow: 0 32px 90px rgba(0,0,0,.4);
  padding: 32px 36px 28px;
}
.auth-head .kicker { font-size: 12px; letter-spacing: .14em; font-weight: 800; color: var(--jade-600); }
.auth-head h2 { font-size: 30px; margin: 8px 0 6px; font-weight: 800; }
.auth-head p { margin: 0 0 18px; font-size: 13px; }

.seg {
  display: grid; grid-template-columns: 1fr 1fr; background: var(--jade-075);
  border-radius: 999px; padding: 5px; margin-bottom: 22px;
}
.seg-item { border-radius: 999px; padding: 10px 0; font-weight: 700; font-size: 15px; color: var(--ink-500); transition: all .2s; }
.seg-item.active { background: var(--forest); color: #fff; box-shadow: var(--shadow-100); }

.auth-form .label { display: block; font-size: 13px; font-weight: 700; color: var(--ink-700, var(--ink-900)); margin: 0 0 7px; }
.auth-form .input-wrap { margin-bottom: 16px; }
.input-wrap { position: relative; }
.input-wrap > svg, .input-wrap > i { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); width: 17px; height: 17px; color: var(--ink-300); }
.input.has-icon { padding-left: 40px; }
.form-row { display: flex; justify-content: space-between; align-items: center; margin: 4px 2px 18px; font-size: 13px; }
.remember { display: flex; align-items: center; gap: 6px; color: var(--ink-500); }
.remember input { accent-color: var(--jade-600); width: 15px; height: 15px; }
.forgot { color: var(--jade-600); font-weight: 600; cursor: pointer; }
.btn-lg { padding: 14px; font-size: 16px; border-radius: var(--r-md); }
.form-foot { text-align: center; margin: 16px 0 0; font-size: 12px; }

.copyright {
  position: relative; z-index: 2; text-align: center;
  color: rgba(255,255,255,.65); font-size: 11.5px; margin: 0; padding: 10px 0 18px;
  text-shadow: 0 1px 8px rgba(0,0,0,.4);
}

/* ---------- 移动端（≤900px）：上图下卡堆叠 ---------- */
@media (max-width: 900px) {
  .login-page {
    background: var(--paper) var(--login-bg) center top / auto 54vh no-repeat;
    background-attachment: scroll;
  }
  .login-page::before {
    position: absolute; inset: 0; height: 54vh;
    background: linear-gradient(180deg, rgba(7,32,26,.60) 0%, rgba(7,32,26,.26) 46%, rgba(7,32,26,.58) 88%, rgba(247,250,248,.55) 100%);
  }
  .login-nav { padding: 12px 18px; }
  .stage { flex-direction: column; padding: 0; gap: 0; }
  .hero-copy {
    min-height: calc(54vh - 66px); justify-content: flex-end;
    padding: 30px 24px 24px;
  }
  .hero-copy h1 { font-size: clamp(30px, 9vw, 40px); margin: 16px 0 10px; }
  .hero-copy p { font-size: 13.5px; }
  .entry-cards { margin-top: 20px; }
  .entry-card { padding: 10px 14px; font-size: 13px; }
  .auth-card {
    width: auto; align-self: stretch;
    margin: 0 14px 8px; padding: 24px 20px 22px;
    border-radius: 18px; box-shadow: 0 18px 50px rgba(10,45,36,.22);
  }
  .copyright { color: var(--ink-300); text-shadow: none; padding: 14px 0 24px; }
}