/* Vertex Data Services — admin & auth theme */
:root{
    --navy:#0B2545; --blue:#1565C0; --cyan:#00C2FF; --ink:#33414F;
    --muted:#6b7a89; --line:#E6ECF3; --bg:#F1F5FA; --sidebar:#0B2545;
    --radius:12px; --shadow:0 6px 20px rgba(11,37,69,.08);
}
*{box-sizing:border-box}
body{margin:0;font-family:'Segoe UI',system-ui,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--blue);text-decoration:none}
h1,h2,h3{color:var(--navy);margin:0}
code{background:#eef3f9;padding:1px 6px;border-radius:5px;font-size:.9em}
.muted{color:var(--muted)} .small{font-size:12px}

/* login */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,var(--navy),#123a6b);padding:20px}
.login-card{background:#fff;border-radius:16px;box-shadow:0 20px 50px rgba(0,0,0,.25);padding:36px;width:100%;max-width:400px}
.login-brand{text-align:center;margin-bottom:18px}
.login-card h1{font-size:24px;margin-bottom:4px}
.login-foot{text-align:center;margin-top:16px;font-size:14px}

/* shell */
.admin-shell{display:flex;min-height:100vh}
.sidebar{width:240px;background:var(--sidebar);color:#c3d0e0;display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0}
.sidebar-brand{padding:20px;border-bottom:1px solid rgba(255,255,255,.08)}
.sidebar-nav{flex:1;padding:14px 10px;display:flex;flex-direction:column;gap:2px}
.sidebar-nav a{display:flex;align-items:center;gap:10px;color:#c3d0e0;padding:11px 14px;border-radius:9px;font-weight:600;font-size:15px}
.sidebar-nav a .dot{width:7px;height:7px;border-radius:50%;background:#3f5f86}
.sidebar-nav a:hover{background:rgba(255,255,255,.06);color:#fff}
.sidebar-nav a.active{background:linear-gradient(135deg,var(--blue),#1273d1);color:#fff}
.sidebar-nav a.active .dot{background:var(--cyan)}
.sidebar-foot{padding:16px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-direction:column;gap:8px}
.sidebar-foot a{color:#9fb0c4;font-size:14px}
.sidebar-foot a:hover{color:#fff}

.admin-main{flex:1;margin-left:240px;display:flex;flex-direction:column;min-width:0}
.topbar{background:#fff;border-bottom:1px solid var(--line);height:64px;display:flex;align-items:center;gap:16px;padding:0 24px;position:sticky;top:0;z-index:20}
.topbar-title{font-size:19px;flex:1}
.menu-btn{display:none;background:none;border:0;font-size:22px;cursor:pointer;color:var(--navy)}
.topbar-user{display:flex;align-items:center;gap:10px;font-size:14px}
.role-chip{background:#eaf2fb;color:var(--blue);padding:2px 10px;border-radius:20px;font-weight:600}
.admin-content{padding:26px}

/* panels & tables */
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:22px}
.panel.narrow{max-width:640px}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.panel-head h2{font-size:18px}
.table{width:100%;border-collapse:collapse}
.table th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);padding:10px 12px;border-bottom:2px solid var(--line)}
.table td{padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.table tr:hover td{background:#fafcff}
.row-unread td{background:#f3f8ff}
.actions{white-space:nowrap;text-align:right}
.link{color:var(--blue);font-weight:600;margin-left:10px}
.link.danger{color:#c0392b}
.badge{padding:2px 10px;border-radius:20px;font-size:12px;font-weight:700;text-transform:capitalize}
.badge-paid{background:#e7f6ec;color:#1c6b3a}
.badge-sent{background:#eaf2fb;color:#1565c0}
.badge-draft{background:#eef1f5;color:#5a6b7b}
.badge-cancelled{background:#fdecec;color:#a12a2a}

/* stat cards */
.stat-cards{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin-bottom:22px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.stat-label{display:block;color:var(--muted);font-size:13px}
.stat-num{display:block;font-size:22px;font-weight:800;color:var(--navy);margin-top:4px}
.stat-card.accent .stat-num{color:#1c6b3a}
.stat-card.warn .stat-num{color:#b9770f}

/* forms */
.form .form-row{margin-bottom:15px;display:flex;flex-direction:column}
.form label{font-weight:600;color:var(--navy);margin-bottom:6px;font-size:14px}
.form input,.form textarea,.form select{padding:10px 12px;border:1px solid var(--line);border-radius:9px;font:inherit;background:#fff}
.form input:focus,.form textarea:focus,.form select:focus{outline:2px solid var(--blue);border-color:var(--blue)}
.form input[disabled]{background:#f4f6f9;color:var(--muted)}
.form textarea.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}
.form-subhead{margin:8px 0 12px;font-size:15px;color:var(--blue);border-bottom:1px solid var(--line);padding-bottom:6px}
.form-actions{display:flex;gap:10px;margin-top:18px}
.btn-row{display:flex;gap:8px}

/* buttons */
.btn{display:inline-block;padding:10px 18px;border-radius:9px;font-weight:600;border:2px solid transparent;cursor:pointer;font-size:14px}
.btn-sm{padding:7px 13px;font-size:13px}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:#0f4fa0}
.btn-ghost{border-color:var(--line);color:var(--navy);background:#fff}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn-block{display:block;width:100%;text-align:center}

/* permissions grid */
.perm-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:6px 0 12px}
.perm-group{border:1px solid var(--line);border-radius:10px;padding:12px}
.perm-group legend{font-weight:700;color:var(--navy);padding:0 6px}
.perm-item{display:flex;align-items:center;gap:8px;font-weight:500;margin:6px 0;color:var(--ink)}

/* invoice items editor */
.items-table td{padding:6px}
.items-table input{width:100%;padding:8px}
.items-table .is-header input[type=text]{font-weight:700;background:#f3f8ff}
.items-table .center{text-align:center}
.row-del{background:#fdecec;color:#c0392b;border:0;width:28px;height:28px;border-radius:6px;cursor:pointer;font-size:16px}
.items-actions{display:flex;gap:10px;margin:8px 0 20px}
.totals-grid{display:grid;grid-template-columns:1.4fr .8fr;gap:22px;align-items:start;margin-top:10px}
.totals-box{background:#f7fafd;border:1px solid var(--line);border-radius:12px;padding:16px}
.total-line{display:flex;justify-content:space-between;padding:6px 0;border-top:1px solid var(--line)}
.total-line.grand{font-size:18px;color:var(--navy);border-top:2px solid var(--blue)}
.total-line.grand strong{color:var(--blue)}

/* invoice preview */
.invoice-preview{border:1px solid var(--line);border-radius:10px;padding:26px;background:#fff}

.alert{padding:12px 15px;border-radius:9px;margin-bottom:16px;font-weight:500}
.alert-success{background:#e7f6ec;color:#1c6b3a;border:1px solid #b7e2c6}
.alert-error{background:#fdecec;color:#a12a2a;border:1px solid #f3c2c2}
.message-body{background:#f7fafd;border:1px solid var(--line);border-radius:10px;padding:16px;margin-top:12px}

@media (max-width:1024px){.stat-cards{grid-template-columns:repeat(3,1fr)}.perm-grid{grid-template-columns:1fr 1fr}}
@media (max-width:820px){
    .sidebar{transform:translateX(-100%);transition:.2s;z-index:50}
    .sidebar.open{transform:none}
    .admin-main{margin-left:0}
    .menu-btn{display:block}
    .grid-2,.grid-3,.totals-grid,.perm-grid,.stat-cards{grid-template-columns:1fr}
}