:root{
  --brand:#22c55e;       /* 主绿色 */
  --brand-600:#16a34a;
  --brand-50:#ecfdf5;
  --text:#0f172a;
  --muted:#6b7280;
  --card:#ffffff;
  --bg:#ecfdf5;
  --border:rgba(148,163,184,0.4);
  --radius:18px;
  --shadow-soft:0 20px 60px rgba(15,118,110,0.16);
  --glass-bg:rgba(255,255,255,0.18);
}

/* 基础重置 */
*,
*::before,
*::after{
  box-sizing:border-box;
}

html,body{
  margin:0;
  padding:0;
  font-family:-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color:var(--text);
}

/* 背景：绿色清新 + 渐变 + 水磨石颗粒感 */
body{
  min-height:100vh;
  background:
    url('png/images.jpg') center/cover no-repeat fixed,
    radial-gradient(circle at 10% 20%, rgba(34,197,94,0.20) 0, rgba(34,197,94,0) 45%),
    radial-gradient(circle at 80% 0%, rgba(45,212,191,0.20) 0, rgba(45,212,191,0) 55%),
    radial-gradient(circle at 0% 100%, rgba(59,130,246,0.14) 0, rgba(59,130,246,0) 55%),
    linear-gradient(135deg, #ecfdf5 0%, #e0f2fe 40%, #fefce8 100%);
  background-attachment:fixed;
}

/* 水磨石小碎块层（轻微点缀） */
.app-shell::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  opacity:0.45;
  mix-blend-mode:soft-light;
  background:
    rgba(236, 253, 245, 0.75),
    radial-gradient(circle at 12% 18%, rgba(16,185,129,0.30) 0, transparent 24px),
    radial-gradient(circle at 80% 70%, rgba(56,189,248,0.30) 0, transparent 26px),
    radial-gradient(circle at 30% 90%, rgba(52,211,153,0.25) 0, transparent 20px),
    radial-gradient(circle at 90% 30%, rgba(234,179,8,0.28) 0, transparent 22px);
}

/* 页面布局 */
.app-shell{
  position:relative;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  align-items:stretch;
}

/* 浮动装饰块，增加一点动态感 */
.bg-decor{
  position:fixed;
  inset:0;
  overflow:hidden;
  pointer-events:none;
  z-index:-1;
}
.floating-shape{
  position:absolute;
  border-radius:999px;
  filter:blur(0.2px);
  opacity:0.45;
  animation:float 16s ease-in-out infinite alternate;
}
.fs-1{
  width:200px;height:200px;
  background:radial-gradient(circle at 30% 20%, rgba(34,197,94,0.7), transparent);
  top:10%;left:8%;
}
.fs-2{
  width:260px;height:260px;
  background:radial-gradient(circle at 70% 30%, rgba(45,212,191,0.7), transparent);
  bottom:-10%;right:0%;
  animation-duration:20s;
}
.fs-3{
  width:160px;height:160px;
  background:radial-gradient(circle at 40% 60%, rgba(59,130,246,0.55), transparent);
  top:50%;right:16%;
  animation-duration:18s;
}

@keyframes float{
  0%{ transform:translate3d(0,0,0) scale(1); }
  100%{ transform:translate3d(20px,-30px,0) scale(1.08); }
}

/* 主体区域：控制宽度和居中 */
.page-main{
  flex:1;
  display:flex;
  align-items:flex-start;
  justify-content:center;
  padding:28px 16px 42px;
}

.container{
  width:100%;
  max-width:960px;
}

/* 顶部标题行 */
.page-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:20px;
}

.page-title{
  margin:0;
  font-size:24px;
  font-weight:700;
  letter-spacing:0.02em;
  display:flex;
  align-items:center;
  gap:8px;
}
.page-title span.badge-dot{
  width:8px;
  height:8px;
  border-radius:999px;
  background:linear-gradient(135deg,#22c55e,#a3e635);
  box-shadow:0 0 0 6px rgba(34,197,94,0.18);
}

/* 通用徽标 */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  background:var(--brand-50);
  color:var(--brand-600);
  font-size:12px;
  border:1px solid rgba(52,211,153,0.55);
}

/* 玻璃卡片 */
.card{
  background:var(--glass-bg);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow-soft);
  padding:16px;
  margin:12px 0;
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}

/* 在讨论页可以让主发帖区域稍微更突出一点 */
.card.emphasis{
  padding:18px 18px 14px;
}

/* 按钮样式 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:8px 14px;
  border-radius:999px;
  border:1px solid var(--border);
  background:rgba(255,255,255,0.85);
  font-size:14px;
  cursor:pointer;
  text-decoration:none;
  color:var(--text);
  transition:box-shadow .18s ease, transform .18s ease, background .18s ease, border-color .18s ease;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.btn:hover{
  box-shadow:0 14px 32px rgba(15,118,110,0.20);
  transform:translateY(-1px);
  border-color:rgba(34,197,94,0.4);
}
.btn-primary{
  background:linear-gradient(135deg,#22c55e,#4ade80);
  color:#f9fafb;
  border-color:rgba(22,163,74,0.85);
}
.btn-primary:hover{
  background:linear-gradient(135deg,#16a34a,#22c55e);
}
.btn-ghost{
  background:transparent;
  border-color:transparent;
}

/* 输入框 */
textarea,
input[type="text"],
input[type="password"]{
  border:1px solid var(--border);
  border-radius:10px;
  padding:10px 11px;
  font-size:14px;
  background:rgba(255,255,255,0.88);
  outline:none;
  transition:border-color .16s, box-shadow .16s, background .16s;
}
textarea:focus,
input[type="text"]:focus,
input[type="password"]:focus{
  border-color:rgba(34,197,94,0.75);
  box-shadow:0 0 0 1px rgba(34,197,94,0.25);
  background:#ffffff;
}

/* 行布局 */
.row{
  display:flex;
  gap:12px;
  align-items:center;
}

/* 登录页专用 */
.login-page .page-main{
  align-items:center;
}
.auth-card{
  width:100%;
  max-width:360px;
  margin:0 auto;
}
.auth-extra{
  margin-top:10px;
  color:var(--muted);
  font-size:13px;
}
.auth-extra a{
  color:var(--brand-600);
  text-decoration:none;
}
.auth-extra a:hover{
  text-decoration:underline;
}

/* 个人空间 */
.profile-page h3{
  margin:20px 0 10px;
}
.grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(220px,1fr));
  gap:16px;
}
.avatar{
  width:64px;
  height:64px;
  border-radius:50%;
  border:2px solid rgba(52,211,153,0.6);
  object-fit:cover;
}
.avatar-sm{
  width:28px;
  height:28px;
  border-radius:50%;
  border:1px solid var(--border);
  object-fit:cover;
}

/* modal、编辑框沿用原来的语义，只是换风格 */
.modal{
  position:fixed;
  top:0;left:0;
  width:100%;height:100%;
  background:rgba(15,23,42,0.45);
  z-index:1000;
  display:none;
}
.modal-content{
  position:absolute;
  top:50%;left:50%;
  transform:translate(-50%,-50%);
  background:rgba(15,23,42,0.85);
  color:#e5e7eb;
  padding:20px;
  border-radius:var(--radius);
  width:90%;
  max-width:420px;
  backdrop-filter:blur(22px);
}
.user-item{
  display:flex;
  gap:8px;
  align-items:center;
  padding:8px 0;
  border-bottom:1px solid rgba(148,163,184,0.45);
}
.user-item:last-child{border-bottom:none;}
.user-item a{
  color:#e5e7eb;
  text-decoration:none;
  font-weight:500;
}
.user-item a:hover{
  color:#bbf7d0;
}

/* 编辑资料弹窗 */
#editDlg{
  background:rgba(255,255,255,0.96);
}

/* 开屏特效 */
.splash{
  position:fixed;
  inset:0;
  z-index:1200;
  display:flex;
  align-items:center;
  justify-content:center;
  background:
    radial-gradient(circle at 10% 10%, #22c55e 0, transparent 55%),
    radial-gradient(circle at 80% 90%, #22d3ee 0, transparent 55%),
    radial-gradient(circle at 50% 50%, #ecfdf5 0, #f0fdf4 45%, #d9f99d 100%);
  transition:opacity .6s ease, transform .6s ease;
}
.splash.hide{
  opacity:0;
  transform:scale(1.02);
  pointer-events:none;
}
.splash-inner{
  text-align:center;
  padding:24px 32px;
  border-radius:26px;
  background:rgba(255,255,255,0.22);
  backdrop-filter:blur(28px);
  -webkit-backdrop-filter:blur(28px);
  box-shadow:0 24px 80px rgba(22,163,74,0.45);
}
.splash-title{
  font-size:28px;
  font-weight:800;
  letter-spacing:0.05em;
  margin-bottom:8px;
}
.splash-tagline{
  font-size:13px;
  color:var(--muted);
}
.splash-dot{
  width:10px;
  height:10px;
  border-radius:999px;
  background:linear-gradient(135deg,#22c55e,#a3e635);
  margin:0 auto 14px;
  box-shadow:0 0 0 6px rgba(34,197,94,0.28);
}
.splash-pulse{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:16px;
  font-size:12px;
  color:#064e3b;
}
.splash-pulse-dot{
  width:6px;height:6px;border-radius:999px;background:#22c55e;
  animation:blink 1s ease-in-out infinite alternate;
}

@keyframes blink{
  from{ transform:scale(1); opacity:0.4; }
  to{ transform:scale(1.5); opacity:1; }
}

/* 额外样式适配 */
.badge-row{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
}
.link-muted{
  color:var(--muted);
  text-decoration:none;
}
.link-muted:hover{
  color:var(--brand-600);
}

/* 帖子卡片悬浮效果 */
.post-card{
  transition:transform .16s ease, box-shadow .16s ease;
}
.post-card:hover{
  transform:translateY(-2px);
  box-shadow:0 16px 40px rgba(15,118,110,0.18);
}