:root{--primary:#0f6b68;--secondary:#0c2f4a;--bg:#f5f8fa;--text:#17313e;--muted:#6b7b84;--danger:#b42318;--success:#087443;--card:#fff;--line:#e3e9ed}*{box-sizing:border-box}body{margin:0;font-family:Tahoma,Arial,sans-serif;background:var(--bg);color:var(--text);direction:rtl}a{text-decoration:none;color:inherit}.container{width:min(1180px,92%);margin:auto}.topbar{background:var(--secondary);color:#fff;padding:9px 0;font-size:13px}.nav{background:#fff;box-shadow:0 2px 16px #00000010;position:sticky;top:0;z-index:20}.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:24px;color:var(--primary)}.brand-badge{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--primary),#2fb7aa);display:grid;place-items:center;color:#fff}.nav-links{display:flex;gap:18px;align-items:center;font-size:14px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:11px;padding:11px 16px;cursor:pointer;font-weight:700;background:var(--primary);color:#fff}.btn.secondary{background:var(--secondary)}.btn.light{background:#eef6f5;color:var(--primary)}.btn.danger{background:var(--danger)}.hero{padding:70px 0;background:linear-gradient(135deg,#e8f7f4,#f4f8fb)}.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:35px;align-items:center}.hero h1{font-size:48px;line-height:1.2;margin:0 0 16px}.hero p{font-size:18px;line-height:1.9;color:var(--muted)}.water-card{min-height:330px;border-radius:32px;background:radial-gradient(circle at 30% 30%,#75ded4,#0f6b68 60%,#0b3148);position:relative;overflow:hidden;box-shadow:0 24px 70px #0f6b6830}.water-card:after{content:'PATCO PURE';position:absolute;inset:auto 25px 25px;color:#fff;font-size:34px;font-weight:900;letter-spacing:2px}.section{padding:55px 0}.section-title{display:flex;justify-content:space-between;align-items:end;margin-bottom:22px}.section-title h2{margin:0;font-size:30px}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:0 5px 25px #162d3a0a}.product-img{height:180px;border-radius:14px;background:linear-gradient(135deg,#e3f4f2,#d9eaf4);display:grid;place-items:center;font-size:54px;margin-bottom:15px}.price{font-weight:800;color:var(--primary);font-size:21px}.footer{background:#09283a;color:#d9e7ec;padding:38px 0;margin-top:60px}.form-card{background:#fff;border-radius:20px;padding:28px;border:1px solid var(--line);box-shadow:0 12px 40px #0000000d}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.field{display:flex;flex-direction:column;gap:7px}.field.full{grid-column:1/-1}label{font-size:13px;font-weight:700}input,select,textarea{width:100%;padding:12px 13px;border:1px solid #ccd7dd;border-radius:10px;background:#fff;font:inherit}textarea{min-height:100px}.alert{padding:13px 16px;border-radius:10px;margin-bottom:16px}.alert.success{background:#e8f7ef;color:var(--success)}.alert.error{background:#fff0ee;color:var(--danger)}table{width:100%;border-collapse:collapse;background:#fff}th,td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:right;font-size:14px}th{background:#f5f8fa}.badge{display:inline-block;padding:5px 9px;border-radius:999px;background:#eef2f5;font-size:12px}.badge.paid{background:#e5f7ee;color:#087443}.badge.due{background:#fff1e8;color:#a1440e}.admin-shell{display:grid;grid-template-columns:260px 1fr;min-height:100vh}.sidebar{background:#09283a;color:#e9f3f6;padding:22px 14px;position:sticky;top:0;height:100vh;overflow:auto}.sidebar .brand{color:#fff;padding:4px 10px 20px}.side-link{display:block;padding:11px 12px;border-radius:9px;margin:3px 0;font-size:14px}.side-link:hover{background:#ffffff12}.admin-main{min-width:0}.admin-top{background:#fff;padding:14px 24px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.admin-content{padding:24px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.stat{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}.stat .n{font-size:28px;font-weight:800;color:var(--primary)}.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;margin-top:18px;overflow:auto}.muted{color:var(--muted)}.actions{display:flex;gap:8px;flex-wrap:wrap}.login-wrap{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#e9f7f4,#eef3f9)}.login-card{width:min(430px,92%);background:#fff;padding:34px;border-radius:22px;box-shadow:0 30px 70px #0b304527}.step-title{margin:22px 0 10px;padding-bottom:8px;border-bottom:1px solid var(--line);color:var(--secondary)}@media(max-width:900px){.hero-grid,.form-grid{grid-template-columns:1fr}.grid{grid-template-columns:repeat(2,1fr)}.hero h1{font-size:36px}.admin-shell{grid-template-columns:1fr}.sidebar{height:auto;position:static}.stats{grid-template-columns:repeat(2,1fr)}.nav-links{display:none}}@media(max-width:520px){.grid,.stats{grid-template-columns:1fr}.admin-content{padding:14px}.hero{padding:45px 0}}