/* style.css - Apple-like clean UI */
:root{
  --bg:#f5f5f7;
  --card:#fff;
  --muted:#6b7280;
  --text:#1c1c1e;
  --primary:#007aff;
  --danger:#ff3b30;
}
*{box-sizing:border-box}
body{
  font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background:var(--bg);
  color:var(--text);
  margin:0;
  padding:28px;
}
.container{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:2fr 360px;gap:24px;}
.header{grid-column:1/-1;display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.header h1{font-size:20px}
.logout{background:var(--danger);color:#fff;padding:8px 14px;border-radius:12px;text-decoration:none}
.btn{background:var(--primary);color:#fff;padding:8px 12px;border-radius:10px;text-decoration:none;display:inline-block}
.main, .sidebar{background:var(--card);padding:18px;border-radius:16px;box-shadow:0 8px 28px rgba(0,0,0,0.06)}
.search-box input{width:100%;padding:10px;border-radius:12px;border:1px solid #e6e6ea}
.new-post textarea{width:100%;min-height:80px;padding:10px;border-radius:12px;border:1px solid #e6e6ea}
.post{padding:12px;border-radius:12px;border:1px solid #eef2f7;margin-bottom:12px;background:#fff}
.post .meta{color:var(--muted);font-size:13px;margin-bottom:8px}
.profile-avatar{width:120px;height:120px;border-radius:18px;object-fit:cover;margin-bottom:10px}
.friend{display:flex;gap:10px;align-items:center;padding:8px 6px;border-radius:10px;margin-bottom:8px}
textarea,input[type=text],input[type=password]{width:100%;padding:10px;border-radius:10px;border:1px solid #e6e6ea;margin-bottom:10px}
.avatar-small{width:42px;height:42px;border-radius:10px;object-fit:cover}
.profile-name{font-weight:700;font-size:16px}
.comment{background:#f7f7fb;padding:10px;border-radius:10px;margin-bottom:8px}
.pagination{display:flex;justify-content:center;gap:8px;margin-top:16px}
.pagination a{padding:8px 12px;border-radius:10px;background:#eef6ff;color:var(--primary);text-decoration:none}
@media (max-width:1000px){.container{grid-template-columns:1fr;padding:16px}}

.topbar {
    width: 100%;
    height: 60px;
    background: #ffffffcc;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #eaeaea;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 25px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar .logo a {
    font-size: 26px;
    font-weight: 700;
    color: #007aff;
    text-decoration: none;
}

.top-user {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-link {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #444;
    font-weight: 600;
    text-decoration: none;
}

.user-link:hover {
    opacity: 0.8;
}

.avatar-sm {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #ddd;
}

.icon-btn {
    font-size: 22px;
    text-decoration: none;
    color: #555;
}

.icon-btn:hover {
    color: #007aff;
}