/* ============================================================
   天赐生态农业官网 —— 样式表
   配色：生态绿 + 稻穗金 + 暖白底
   ============================================================ */
:root{
  --green-900:#1f3d1f;
  --green-700:#2f6b2f;
  --green-600:#3a8a3a;
  --green-500:#4caf50;
  --green-100:#e8f5e9;
  --gold-600:#c8932b;
  --gold-500:#e0a93b;
  --ink:#23311f;
  --muted:#6b7a66;
  --bg:#fbfdf8;
  --card:#ffffff;
  --line:#e3ead9;
  --shadow:0 6px 24px rgba(31,61,31,.08);
  --radius:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--green-700);text-decoration:none}
img{max-width:100%}
.container{max-width:1140px;margin:0 auto;padding:0 20px}
.section{padding:56px 0}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px;color:var(--green-900)}
.brand-mark{font-size:22px}
.brand-name{letter-spacing:.5px}
.nav{display:flex;align-items:center;gap:22px}
.nav a{color:var(--ink);font-size:15px;font-weight:500;position:relative;padding:4px 0}
.nav a:hover{color:var(--green-600)}
.nav a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;
  background:var(--gold-500);transition:width .25s}
.nav a:hover::after{width:100%}
.nav-admin{
  background:var(--green-600);color:#fff!important;
  padding:6px 14px!important;border-radius:999px;font-size:14px}
.nav-admin:hover{background:var(--green-700)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;border:0;background:none;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--green-900);color:#dfe9d8;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;padding:48px 0 28px}
.site-footer h4{color:#fff;margin:0 0 12px;font-size:16px}
.site-footer p{margin:6px 0;font-size:14px;color:#c8d6bf}
.site-footer a{color:var(--gold-500)}
.copyright{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;text-align:center;font-size:13px;color:#9fb394}

/* ---------- 标题 ---------- */
.section-title{font-size:28px;color:var(--green-900);margin:0 0 22px;position:relative;padding-left:14px}
.section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:3px;background:var(--gold-500)}
.section-title.left{padding-left:14px}
.lead{font-size:16px;color:var(--ink);max-width:760px}
.lead + .lead{margin-top:14px}

/* ---------- 按钮 ---------- */
.btn{display:inline-block;padding:12px 26px;border-radius:999px;font-weight:600;font-size:15px;cursor:pointer;border:0;transition:transform .15s, box-shadow .2s;line-height:1}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(47,107,47,.25)}
.btn-primary{background:var(--green-600);color:#fff}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.85)}
.btn-ghost:hover{border-color:#fff}

/* ---------- Hero ---------- */
.hero{
  background-size:cover;background-position:center;color:#fff;
  min-height:70vh;display:flex;align-items:center;position:relative}
.hero-inner{max-width:760px;padding:60px 0}
.hero h1{font-size:46px;line-height:1.2;margin:0 0 16px;text-shadow:0 2px 12px rgba(0,0,0,.35)}
.hero-sub{font-size:19px;margin:0 0 28px;opacity:.95;text-shadow:0 1px 8px rgba(0,0,0,.3)}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 卡片 ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s}
.card:hover{transform:translateY(-6px)}
.card-img{height:180px;background-size:cover;background-position:center}
.card h3{margin:16px 18px 8px;color:var(--green-900)}
.card p{margin:0 18px 18px;color:var(--muted);font-size:14px}

/* ---------- 生态条 ---------- */
.eco-strip{display:grid;grid-template-columns:1.1fr 1fr;gap:36px;align-items:center;background:var(--green-100);border-radius:var(--radius);padding:36px}
.eco-text .section-title{margin-bottom:14px}
.eco-text p{color:var(--muted);margin:0 0 18px}
.eco-img{height:260px;border-radius:12px;background-size:cover;background-position:center}

/* ---------- CTA 横幅 ---------- */
.cta-band{text-align:center;background:linear-gradient(135deg,var(--green-700),var(--green-500));color:#fff;border-radius:var(--radius);padding:44px 24px}
.cta-band h2{margin:0 0 10px;font-size:28px}
.cta-band p{margin:0 0 20px;opacity:.95}
.cta-band .btn-primary{background:#fff;color:var(--green-700)}

/* ---------- 两栏 ---------- */
.two-col{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:start}
.feature-list{list-style:none;padding:0;margin:18px 0 0}
.feature-list li{background:var(--green-100);margin-bottom:10px;padding:12px 16px;border-radius:10px;font-size:15px}
.side-img{height:340px;border-radius:var(--radius);background-size:cover;background-position:center;box-shadow:var(--shadow)}

/* ---------- 产品网格 ---------- */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:18px}
.product{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.product-img{height:170px;background-size:cover;background-position:center}
.product h3{margin:14px 16px 6px;color:var(--green-900);font-size:17px}
.product p{margin:0 16px 16px;color:var(--muted);font-size:14px}

/* ---------- 联系/订货 ---------- */
.contact-info{background:var(--green-100);border-radius:var(--radius);padding:24px;align-self:start}
.contact-info p{margin:10px 0;font-size:15px}
.order-form{background:var(--card);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.order-form h3{margin:0 0 16px;color:var(--green-900)}
.order-form label{display:block;font-size:14px;color:var(--ink);margin-bottom:14px;font-weight:500}
.order-form input,.order-form select,.order-form textarea{
  width:100%;margin-top:6px;padding:10px 12px;border:1px solid var(--line);
  border-radius:10px;font-size:14px;font-family:inherit;background:#fff}
.order-form input:focus,.order-form select:focus,.order-form textarea:focus{outline:none;border-color:var(--green-500);box-shadow:0 0 0 3px var(--green-100)}
.order-form .btn{width:100%;margin-top:4px}
.hint{font-size:12px;color:var(--muted);margin:12px 0 0}

/* ---------- Flash ---------- */
.flash{margin:14px 0;padding:12px 16px;border-radius:10px;font-size:14px}
.flash-ok{background:#e6f4ea;color:#1f6b32;border:1px solid #b7e0c2}
.flash-warn{background:#fff4e0;color:#8a5a00;border:1px solid #f0d49a}

/* ============================================================
   后台样式
   ============================================================ */
.admin-shell{display:grid;grid-template-columns:230px 1fr;min-height:100vh}
.admin-side{background:var(--green-900);color:#dce8d3;padding:24px 18px}
.admin-side h2{color:#fff;font-size:17px;margin:0 0 6px}
.admin-side .side-sub{font-size:12px;color:#9fb394;margin-bottom:22px}
.admin-side a{display:block;color:#cfe0c4;padding:10px 12px;border-radius:8px;margin-bottom:6px;font-size:14px}
.admin-side a:hover,.admin-side a.active{background:rgba(255,255,255,.12);color:#fff}
.admin-side .logout{margin-top:18px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18)}
.admin-main{padding:28px 32px;background:var(--bg)}
.admin-main h1{font-size:24px;color:var(--green-900);margin:0 0 6px}
.admin-main .sub{color:var(--muted);margin-bottom:24px}
.stat-row{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-bottom:26px}
.stat{background:var(--card);border-radius:12px;padding:16px;box-shadow:var(--shadow);text-align:center}
.stat b{display:block;font-size:26px;color:var(--green-700)}
.stat span{font-size:13px;color:var(--muted)}

.table-wrap{background:var(--card);border-radius:12px;box-shadow:var(--shadow);overflow:hidden}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
th{background:var(--green-100);color:var(--green-900);font-weight:600}
tr:hover td{background:#fafdf6}
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600}
.badge-待处理{background:#fff4e0;color:#8a5a00}
.badge-已确认{background:#e6f0ff;color:#1f5fb6}
.badge-已发货{background:#ede7ff;color:#5b32b6}
.badge-已完成{background:#e6f4ea;color:#1f6b32}
.badge-已取消{background:#f1f1f1;color:#777}

.admin-form{background:var(--card);border-radius:12px;box-shadow:var(--shadow);padding:24px;max-width:760px}
.admin-form label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin:16px 0 6px}
.admin-form input,.admin-form textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;
  font-size:14px;font-family:inherit;background:#fff}
.admin-form textarea{min-height:90px}
.admin-form .btn{margin-top:20px}
.mini-form{display:inline-flex;gap:6px;align-items:center}
.mini-form select{padding:5px 8px;border:1px solid var(--line);border-radius:8px;font-size:13px}
.btn-sm{padding:6px 12px;font-size:13px;border-radius:8px;border:0;cursor:pointer;font-weight:600}
.btn-sm-del{background:#fde8e8;color:#b3261e}
.btn-sm-go{background:var(--green-600);color:#fff}

/* ---------- 登录页 ---------- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--green-800,#1f3d1f),var(--green-600));padding:20px}
.login-card{background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.25);width:100%;max-width:400px;padding:36px}
.login-card h1{margin:0 0 6px;color:var(--green-900);font-size:22px;text-align:center}
.login-card .tip{text-align:center;color:var(--muted);font-size:13px;margin-bottom:24px}
.login-card label{display:block;font-size:14px;font-weight:600;margin:14px 0 6px}
.login-card input{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;font-size:15px}
.login-card .btn{width:100%;margin-top:22px}
.login-brand{text-align:center;font-size:34px;margin-bottom:8px}

/* ============================================================
   响应式
   ============================================================ */
@media(max-width:900px){
  .cards,.product-grid,.footer-grid{grid-template-columns:repeat(2,1fr)}
  .eco-strip,.two-col{grid-template-columns:1fr}
  .stat-row{grid-template-columns:repeat(3,1fr)}
  .admin-shell{grid-template-columns:1fr}
  .admin-side{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
  .admin-side .side-sub,.admin-side .logout{display:none}
  .admin-side a{margin:0}
}
@media(max-width:640px){
  .nav{position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;gap:0;
       padding:10px 20px;box-shadow:var(--shadow);display:none}
  .nav.open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-admin{display:inline-block;margin-top:6px}
  .nav-toggle{display:flex}
  .hero h1{font-size:32px}
  .hero-sub{font-size:16px}
  .cards,.product-grid,.footer-grid,.stat-row{grid-template-columns:1fr}
  .section{padding:38px 0}
  th:nth-child(4),td:nth-child(4){display:none}
}