:root{
  --navy:#00305b; --navy-2:#012d59; --gold:#dec328; --amber:#ebb023;
  --cream:#fffcf9; --surface:#ffffff; --ink:#1a2c40; --muted:#5b6b7c; --faint:#93a1b0;
  --line:#e7e2d6; --line-2:#eef1f4;
  --me:#00305b; --them:#f0f2f5;
  --shadow:0 2px 10px rgba(0,48,91,.06),0 10px 30px rgba(0,48,91,.06);
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Tajawal',system-ui,sans-serif;background:var(--cream);color:var(--ink);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:900px;margin:0 auto;padding:0 18px}

/* header */
.top{position:sticky;top:0;z-index:30;background:rgba(255,252,249,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top-in{max-width:900px;margin:0 auto;padding:12px 18px;display:flex;align-items:center;gap:12px}
.logo{width:40px;height:40px;border-radius:12px;background:linear-gradient(140deg,var(--navy),var(--navy-2));color:var(--gold);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:19px;flex-shrink:0}
.brand b{display:block;font-weight:800;font-size:15px;line-height:1.2;color:var(--navy)}
.brand span{font-size:11.5px;color:var(--muted)}
.top .right{margin-right:auto;display:flex;gap:8px;align-items:center}
.btn{display:inline-flex;align-items:center;gap:7px;font-family:inherit;font-size:14px;font-weight:700;padding:9px 18px;border-radius:11px;border:0;cursor:pointer;transition:.15s}
.btn.gold{background:var(--gold);color:var(--navy)}.btn.gold:hover{background:var(--amber)}
.btn.navy{background:var(--navy);color:#fff}.btn.navy:hover{background:var(--navy-2)}
.btn.ghost{background:transparent;color:var(--navy);border:1px solid var(--line)}
.btn.sm{padding:7px 13px;font-size:13px}
.btn.block{width:100%;justify-content:center;padding:13px}

/* hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(150deg,var(--navy),var(--navy-2));color:#fff;text-align:center;padding:64px 18px 72px}
.hero::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(222,195,40,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(222,195,40,.05) 1px,transparent 1px);background-size:56px 56px}
.hero-av{width:88px;height:88px;border-radius:50%;margin:0 auto 18px;background:linear-gradient(140deg,var(--gold),var(--amber));color:var(--navy);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:38px;position:relative;box-shadow:0 8px 30px rgba(0,0,0,.3)}
.hero h1{font-size:34px;font-weight:800;position:relative;margin-bottom:10px}
.hero p{font-size:16px;color:rgba(255,252,249,.8);max-width:520px;margin:0 auto 26px;position:relative}
.hero .cta{display:flex;gap:12px;justify-content:center;position:relative;flex-wrap:wrap}
.gold-line{height:4px;background:linear-gradient(90deg,var(--gold),var(--amber),transparent)}

/* features */
.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:36px 0}
.feat{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow)}
.feat .ic{width:44px;height:44px;border-radius:12px;background:var(--navy);color:var(--gold);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:12px}
.feat h3{font-size:16px;color:var(--navy);margin-bottom:5px}
.feat p{font-size:13.5px;color:var(--muted)}

/* auth card */
.auth{max-width:420px;margin:40px auto;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:32px 28px;box-shadow:var(--shadow)}
.auth h2{font-size:22px;color:var(--navy);margin-bottom:4px}
.auth .sub{color:var(--muted);font-size:13.5px;margin-bottom:22px}
.field{margin-bottom:15px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.field input{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--line);font-size:15px;font-family:inherit;background:var(--cream)}
.field input:focus{outline:none;border-color:var(--gold);background:#fff}
.err-box{background:#f8e7e8;color:#b4444a;padding:11px 14px;border-radius:11px;font-size:13.5px;margin-bottom:16px}
.ok-box{background:#e3f2eb;color:#1a7a4a;padding:11px 14px;border-radius:11px;font-size:13.5px;margin-bottom:16px}
.auth .alt{text-align:center;margin-top:18px;font-size:13.5px;color:var(--muted)}
.auth .alt a{color:var(--navy);font-weight:700}
.hp{position:absolute;left:-9999px}

/* chat */
.chat-wrap{max-width:900px;margin:0 auto;height:calc(100vh - 66px);display:flex;background:var(--surface)}
.conv-list{width:300px;border-left:1px solid var(--line);overflow-y:auto;flex-shrink:0}
.conv-list.hide-mobile{}
.conv-head{padding:16px 18px;font-weight:800;color:var(--navy);border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--surface)}
.conv{display:flex;gap:11px;align-items:center;padding:13px 16px;border-bottom:1px solid var(--line-2);cursor:pointer}
.conv:hover,.conv.active{background:var(--cream)}
.conv .av{width:44px;height:44px;border-radius:50%;background:linear-gradient(140deg,var(--navy),var(--navy-2));color:var(--gold);display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.conv .info{flex:1;min-width:0}
.conv .nm{font-weight:700;font-size:14px;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv .lm{font-size:12.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv .badge{background:var(--gold);color:var(--navy);font-size:11px;font-weight:700;border-radius:999px;padding:1px 8px;flex-shrink:0}

.chat-main{flex:1;display:flex;flex-direction:column;min-width:0}
.chat-top{padding:14px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:11px;background:var(--surface)}
.chat-top .av{width:40px;height:40px;border-radius:50%;background:linear-gradient(140deg,var(--gold),var(--amber));color:var(--navy);display:flex;align-items:center;justify-content:center;font-weight:700}
.chat-top .nm{font-weight:700;color:var(--navy)}
.chat-top .st{font-size:12px;color:var(--faint)}
.chat-top .back{margin-left:auto;display:none}
.msgs{flex:1;overflow-y:auto;padding:20px 18px;display:flex;flex-direction:column;gap:8px;background:var(--cream)}
.msg{max-width:74%;padding:10px 14px;border-radius:16px;font-size:14.5px;word-wrap:break-word;white-space:pre-wrap}
.msg.them{align-self:flex-start;background:var(--them);color:var(--ink);border-bottom-right-radius:5px}
.msg.me{align-self:flex-end;background:var(--navy);color:#fff;border-bottom-left-radius:5px}
.msg .t{font-size:10.5px;opacity:.6;margin-top:3px;display:block}
.compose{padding:12px 14px;border-top:1px solid var(--line);display:flex;gap:10px;background:var(--surface)}
.compose input{flex:1;padding:12px 16px;border-radius:999px;border:1px solid var(--line);font-size:15px;font-family:inherit;background:var(--cream)}
.compose input:focus{outline:none;border-color:var(--gold)}
.compose button{width:46px;height:46px;border-radius:50%;border:0;background:var(--gold);color:var(--navy);font-size:20px;cursor:pointer;flex-shrink:0}
.empty-chat{flex:1;display:flex;align-items:center;justify-content:center;color:var(--faint);font-size:14px;padding:20px;text-align:center}

.foot{text-align:center;padding:30px 18px;color:var(--faint);font-size:12.5px}
@media (max-width:720px){
  .feats{grid-template-columns:1fr}
  .hero h1{font-size:27px}
  .chat-wrap{height:calc(100vh - 62px)}
  .conv-list{width:100%;position:absolute;inset:0;z-index:5;background:var(--surface)}
  .conv-list.collapsed{display:none}
  .chat-main.collapsed{display:none}
  .chat-top .back{display:inline-flex}
}

/* ============ فيد بشكل فيسبوك ============ */
body.fb{background:#f0f2f5}
.fb-top{position:sticky;top:0;z-index:40;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.1)}
.fb-top-in{max-width:680px;margin:0 auto;padding:9px 16px;display:flex;align-items:center;gap:14px}
.fb-logo{width:40px;height:40px;border-radius:50%;background:linear-gradient(140deg,var(--navy),var(--navy-2));color:var(--gold);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:19px;flex-shrink:0}
.fb-nav{display:flex;gap:6px;margin:0 auto}
.fb-nav a{width:56px;height:42px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:21px;color:#65676b;text-decoration:none}
.fb-nav a:hover{background:#f0f2f5}
.fb-nav a.active{color:var(--navy);position:relative}
.fb-nav a.active::after{content:'';position:absolute;bottom:-9px;left:8px;right:8px;height:3px;background:var(--navy);border-radius:3px}
.fb-me{display:flex;align-items:center;gap:9px}
.fb-av,.fb-av-sm{border-radius:50%;background:linear-gradient(140deg,var(--navy),var(--navy-2));color:var(--gold);display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.fb-av{width:42px;height:42px;font-size:17px}.fb-av-sm{width:32px;height:32px;font-size:14px}

.fb-feed{max-width:600px;margin:18px auto;padding:0 12px;display:flex;flex-direction:column;gap:16px}
.composer{background:#fff;border-radius:14px;box-shadow:0 1px 2px rgba(0,0,0,.1);padding:14px 16px}
.composer-row{display:flex;gap:11px;align-items:flex-start}
.composer textarea{flex:1;border:0;background:#f0f2f5;border-radius:18px;padding:11px 16px;font-family:inherit;font-size:16px;resize:none;color:var(--ink)}
.composer textarea:focus{outline:none}
.composer-actions{display:flex;justify-content:flex-end;margin-top:10px;border-top:1px solid #eee;padding-top:10px}
.btn.fbblue{background:var(--navy);color:#fff}.btn.fbblue:hover{background:var(--navy-2)}

.post{background:#fff;border-radius:14px;box-shadow:0 1px 2px rgba(0,0,0,.1);overflow:hidden}
.post-head{display:flex;gap:10px;align-items:center;padding:14px 16px 6px}
.post-author{font-weight:700;font-size:15px;color:var(--ink)}
.verified{color:var(--gold);font-size:12px;margin-right:3px}
.post-time{font-size:12.5px;color:#65676b}
.post-body{padding:4px 16px 12px;font-size:15.5px;line-height:1.8;color:var(--ink);white-space:pre-wrap;word-wrap:break-word}
.post-stats{display:flex;justify-content:space-between;padding:0 16px 8px;font-size:13px;color:#65676b;min-height:18px}
.post-actions{display:flex;border-top:1px solid #eef0f2;margin:0 12px}
.pa-btn{flex:1;background:none;border:0;padding:9px;font-family:inherit;font-size:14px;font-weight:600;color:#65676b;cursor:pointer;border-radius:8px}
.pa-btn:hover{background:#f0f2f5}
.pa-btn.liked{color:var(--navy)}
.comments{padding:8px 16px 14px;display:flex;flex-direction:column;gap:8px;border-top:1px solid #eef0f2}
.comment{display:flex;gap:8px;align-items:flex-start}
.cm-bubble{background:#f0f2f5;border-radius:16px;padding:8px 13px;font-size:14px;line-height:1.6}
.cm-bubble b{display:block;font-size:13px;color:var(--navy)}
.cm-form{display:flex;gap:8px;align-items:center;margin-top:4px}
.cm-form input{flex:1;border:0;background:#f0f2f5;border-radius:18px;padding:9px 15px;font-family:inherit;font-size:14.5px}
.cm-form input:focus{outline:none}
.card-empty{background:#fff;border-radius:14px;box-shadow:0 1px 2px rgba(0,0,0,.1);padding:36px 20px;text-align:center;color:#65676b}
@media (max-width:600px){ .fb-feed{padding:0 8px;margin-top:10px} }

/* ============ رأس البروفايل (كوفر + صورة) ============ */
.profile{max-width:700px;margin:0 auto;background:#fff}
.cover{height:220px;background:linear-gradient(120deg,var(--navy),var(--navy-2) 60%,#0a4a7a);background-size:cover;background-position:center;position:relative;border-radius:0 0 14px 14px}
.cover-edit{position:absolute;bottom:14px;left:14px;background:rgba(255,255,255,.92);color:var(--navy);font-size:13px;font-weight:700;padding:7px 13px;border-radius:9px;text-decoration:none}
.cover-edit:hover{background:#fff}
.profile-bar{display:flex;align-items:flex-end;gap:16px;padding:0 26px 14px;margin-top:-42px}
.pf-avatar-wrap{position:relative;flex-shrink:0}
.pf-avatar{width:150px;height:150px;border-radius:50%;object-fit:cover;border:4px solid #fff;background:#fff;display:block}
.pf-avatar.mono{background:linear-gradient(140deg,var(--navy),var(--navy-2));color:var(--gold);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:60px}
.av-edit{position:absolute;bottom:8px;left:8px;width:36px;height:36px;border-radius:50%;background:#e4e6eb;border:2px solid #fff;display:flex;align-items:center;justify-content:center;font-size:16px;text-decoration:none}
.pf-name{font-size:28px;font-weight:800;color:var(--ink);padding-bottom:12px}
.imgav{object-fit:cover}
img.fb-av,img.fb-av-sm{padding:0}
@media (max-width:600px){
  .cover{height:150px}
  .profile-bar{flex-direction:column;align-items:center;text-align:center;padding:0 16px 12px;margin-top:-56px}
  .pf-avatar{width:120px;height:120px}.pf-avatar.mono{font-size:48px}
  .pf-name{font-size:23px;padding-bottom:0}
}

/* عناصر الصفحة العامة */
.pf-info{padding-bottom:12px}
.pf-sub{font-size:13.5px;color:var(--muted);margin-top:2px}
.join-bar{display:block;background:linear-gradient(120deg,var(--navy),var(--navy-2));color:#fff;text-align:center;padding:14px;border-radius:14px;font-weight:700;font-size:14.5px;text-decoration:none}
.join-bar:hover{filter:brightness(1.08)}
.cm-login{display:inline-block;color:var(--navy);font-weight:700;font-size:13.5px;padding:6px 2px}
@media (max-width:600px){ .pf-info{padding-bottom:0} }

/* زرار المشاركة */
.post-actions a.pa-btn{display:flex;align-items:center;justify-content:center;gap:6px;text-decoration:none}
a.post-time{text-decoration:none}
a.post-time:hover{text-decoration:underline}