:root{
  --bg:#f4f6fb; --card:#ffffff; --ink:#1c2434; --muted:#6b7589;
  --line:#e4e8f0; --brand:#2f4bff; --brand-dark:#1f37cc;
  --danger:#e23a4e; --danger-dark:#c22d40;
  --ok:#1f9d55; --warn:#b7791f; --shadow:0 1px 3px rgba(20,30,60,.08),0 6px 24px rgba(20,30,60,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--ink);font-size:15px;line-height:1.5}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.muted{color:var(--muted)}

/* Top bar */
.topbar{display:flex;align-items:center;justify-content:space-between;
  background:#0f1b3d;color:#fff;padding:0 24px;height:60px;
  box-shadow:0 1px 0 rgba(0,0,0,.1)}
.brand{font-weight:700;font-size:17px;display:flex;align-items:center;gap:10px}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:7px;background:var(--brand);color:#fff;
  font-size:13px;font-weight:800;letter-spacing:.5px}
.brand-mark.big{width:54px;height:54px;border-radius:14px;font-size:22px}
.topbar-right{display:flex;align-items:center;gap:14px}
.user{color:#c7d0ea;font-size:14px}

/* Layout */
.container{max-width:1040px;margin:28px auto;padding:0 20px}
.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:18px}
.page-head h1{margin:0 0 2px;font-size:24px}
.page-head .muted{margin:0;font-size:14px}

/* Cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:22px;box-shadow:var(--shadow)}
.card.no-pad{padding:0;overflow:hidden}
.form-card{max-width:680px}

/* Flash / alerts */
.flash{background:#e7f6ee;border:1px solid #bfe6cf;color:#176a3a;
  padding:11px 15px;border-radius:9px;margin-bottom:18px;font-size:14px}
.alert{background:#fdecee;border:1px solid #f6c6cd;color:#a4243a;
  padding:11px 15px;border-radius:9px;margin-bottom:16px;font-size:14px}
.alert ul{margin:0;padding-left:18px}

/* Forms */
label{display:block;font-weight:600;font-size:13.5px;margin:14px 0 6px}
label:first-of-type{margin-top:0}
input[type=text],input[type=password],input[type=email],select{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:9px;
  font-size:15px;background:#fff;color:var(--ink)}
input:focus,select:focus{outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(47,75,255,.14)}
.hint{font-size:12.5px;color:var(--muted);margin:6px 0 0}
.req{color:var(--danger)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.email-row{display:flex;gap:8px;margin-bottom:8px}
.email-row input{flex:1}
.form-actions{display:flex;gap:10px;margin-top:22px}

/* Buttons */
.btn{display:inline-block;border:1px solid var(--line);background:#fff;color:var(--ink);
  padding:9px 16px;border-radius:9px;font-size:14px;font-weight:600;cursor:pointer;
  transition:.12s;line-height:1.2}
.btn:hover{text-decoration:none;border-color:#cdd4e2;background:#fafbff}
.btn-sm{padding:6px 11px;font-size:13px}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark)}
.btn-danger{background:#fff;border-color:#f1bcc3;color:var(--danger)}
.btn-danger:hover{background:var(--danger);border-color:var(--danger);color:#fff}
.btn-ghost{background:transparent;border-color:transparent;color:inherit}
.topbar .btn-ghost{color:#dbe2f5;border-color:rgba(255,255,255,.25)}
.topbar .btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn.block{width:100%;margin-top:18px;padding:11px}
.inline{display:inline}

/* Table */
.table{width:100%;border-collapse:collapse;font-size:14px}
.table th{text-align:left;background:#f7f9fd;color:var(--muted);
  font-size:12px;text-transform:uppercase;letter-spacing:.4px;
  padding:12px 16px;border-bottom:1px solid var(--line)}
.table td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:middle}
.table tr:last-child td{border-bottom:none}
.table tr:hover td{background:#fafbff}
.table .sub{color:var(--muted);font-size:12.5px;margin-top:2px}
.ta-right{text-align:right}.ta-center{text-align:center}.nowrap{white-space:nowrap}

/* Badges */
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;
  font-weight:700;text-transform:capitalize}
.badge-active{background:#e6f6ec;color:var(--ok)}
.badge-paused{background:#fdf0dc;color:var(--warn)}

/* Empty state */
.empty{text-align:center;padding:54px 22px}
.empty-icon{font-size:42px;margin-bottom:6px}
.empty h2{margin:6px 0 4px}
.empty .btn{margin-top:14px}

/* Auth screens */
.auth-wrap{min-height:70vh;display:flex;align-items:center;justify-content:center;padding:30px 0}
.auth-card{width:100%;max-width:400px;text-align:center}
.auth-card h1{font-size:21px;margin:14px 0 2px}
.auth-card .muted{margin:0 0 18px}
.auth-card form{text-align:left}
.auth-logo{display:flex;justify-content:center;margin-bottom:6px}
.center{text-align:center}
.error-code{font-size:54px;margin:0 0 4px;color:var(--brand)}

@media (max-width:640px){
  .grid2{grid-template-columns:1fr}
  .page-head{flex-direction:column}
  .container{margin:18px auto}
  .table th:nth-child(3),.table td:nth-child(3){display:none} /* hide website col on phones */
}

/* ---- Phase 2A: nav, Meta campaigns tree, controls ---- */
.mainnav{display:flex;gap:2px;background:#fff;border-bottom:1px solid var(--line);padding:0 24px;flex-wrap:wrap}
.mainnav a{padding:13px 16px;color:var(--muted);font-weight:600;font-size:14px;border-bottom:2px solid transparent}
.mainnav a:hover{color:var(--ink);text-decoration:none}
.mainnav a.on{color:var(--brand);border-bottom-color:var(--brand)}

code{background:#f4f6fb;padding:1px 5px;border-radius:5px;font-size:12.5px}
.note{font-size:12.5px;margin-top:10px}

.controls{padding:14px 16px;margin-bottom:16px}
.controls-row{display:flex;flex-wrap:wrap;gap:18px;align-items:flex-end}
.ctl{display:flex;flex-direction:column;gap:4px}
.ctl label{margin:0;font-size:12px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.3px}
.ctl-form{display:flex;gap:14px;align-items:flex-end;flex-wrap:wrap;margin:0}
.ctl-btns{flex-direction:row;gap:8px}
.ctl select,.ctl input[type=date]{padding:8px 10px;border:1px solid var(--line);border-radius:8px;font-size:14px;background:#fff}
.controls-foot{margin-top:12px;font-size:13px;border-top:1px solid var(--line);padding-top:10px}

/* tree table */
.tree{width:100%;border-collapse:collapse;font-size:13.5px}
.tree th{text-align:right;background:#f7f9fd;color:var(--muted);font-size:11px;text-transform:uppercase;
  letter-spacing:.4px;padding:10px 12px;border-bottom:1px solid var(--line)}
.tree th.ta-left{text-align:left}
.tree td{padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
.tree tr:last-child td{border-bottom:none}
.tree td.name{text-align:left}
.lvl-camp td{background:#fff}
.lvl-camp td.name{font-weight:600}
.lvl-adset td{background:#fcfdff}
.lvl-ad td{background:#fafbfd}
.tree .sub{color:var(--muted);font-size:11.5px;margin-top:3px;font-weight:400}
.tw{border:none;background:transparent;cursor:pointer;color:var(--muted);font-size:12px;width:18px;
  padding:0;margin-right:2px;transition:transform .12s;display:inline-block}
.tw.collapsed{transform:rotate(-90deg)}
.lvl-ad .name{padding-left:64px}
.row.hidden{display:none}
.tag{display:inline-block;background:#eef0f4;color:#5b6577;font-size:10.5px;padding:1px 7px;border-radius:999px;margin-left:6px;vertical-align:middle}
.thumb{width:26px;height:26px;border-radius:4px;object-fit:cover;vertical-align:middle;border:1px solid var(--line);margin-right:4px}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:3px;vertical-align:middle}
.dot.s-active{background:#1f9d55}.dot.s-paused{background:#d8a200}.dot.s-pending{background:#2f4bff}
.dot.s-issue{background:#e23a4e}.dot.s-archived,.dot.s-other{background:#9aa3b2}

.badge.st-active{background:#e6f6ec;color:#1f9d55}
.badge.st-paused{background:#fdf0dc;color:#b7791f}
.badge.st-pending{background:#e7eefc;color:#2f4bff}
.badge.st-issue{background:#fdecee;color:#c22d40}
.badge.st-archived,.badge.st-other{background:#eef0f4;color:#6b7589}

.kv{width:100%;border-collapse:collapse;font-size:14px;margin-bottom:14px}
.kv td{padding:8px 10px;border-bottom:1px solid var(--line)}
.kv tr:last-child td{border-bottom:none}
.kv td:first-child{color:var(--muted);width:210px}
.howto{margin:8px 0 0;padding-left:20px;line-height:2}

@media (max-width:760px){
  .tree th:nth-child(3),.tree td:nth-child(3),
  .tree th:nth-child(5),.tree td:nth-child(5),
  .tree th:nth-child(7),.tree td:nth-child(7){display:none} /* hide budget/impr/ctr on phones */
}