:root {
  --brand: #2563eb; --brand-dark: #1d4ed8;
  --bg: #f1f5f9; --sidebar: #0f172a; --card: #fff;
  --text: #0f172a; --muted: #64748b; --border: #e2e8f0;
  --success: #16a34a; --warn: #d97706; --danger: #dc2626;
  --radius: 10px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
       background: var(--bg); color: var(--text); min-height: 100vh; }

/* ── Layout ── */
.layout { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.sidebar { background: var(--sidebar); color: #f8fafc; padding: 1.5rem 1rem;
           display: flex; flex-direction: column; gap: 1.5rem; }
.sidebar h2 { font-size: 1rem; letter-spacing: .05em; text-transform: uppercase;
              color: #94a3b8; margin-bottom: .25rem; }
.sidebar nav a { display: flex; align-items: center; gap: .6rem; padding: .6rem .75rem;
                 border-radius: 8px; color: #cbd5e1; text-decoration: none; font-size: .9rem; }
.sidebar nav a:hover, .sidebar nav a.active { background: rgba(255,255,255,.1); color: #fff; }
.main { padding: 2rem; overflow-y: auto; }

/* ── Page header ── */
.page-header { display: flex; align-items: center; justify-content: space-between;
               margin-bottom: 1.75rem; flex-wrap: wrap; gap: 1rem; }
.page-header h1 { font-size: 1.5rem; font-weight: 700; }

/* ── Cards ── */
.card { background: var(--card); border-radius: var(--radius);
        box-shadow: 0 1px 4px rgba(0,0,0,.06); padding: 1.5rem; }
.card + .card { margin-top: 1.25rem; }
.card-title { font-size: 1rem; font-weight: 600; margin-bottom: 1rem; color: var(--muted);
              text-transform: uppercase; letter-spacing: .04em; font-size: .75rem; }

/* ── Stat boxes ── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px,1fr)); gap: 1rem; }
.stat-card { background: var(--card); border-radius: var(--radius); padding: 1.25rem 1.5rem;
             box-shadow: 0 1px 4px rgba(0,0,0,.06); }
.stat-card .val { font-size: 2rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.stat-card .lbl { font-size: .75rem; color: var(--muted); text-transform: uppercase;
                  letter-spacing: .05em; margin-top: .25rem; }
.stat-card .val.brand { color: var(--brand); }
.stat-card .val.success { color: var(--success); }
.stat-card .val.warn { color: var(--warn); }

/* ── Phase badge ── */
.badge { display: inline-flex; align-items: center; gap: .3rem; padding: .2rem .7rem;
         border-radius: 999px; font-size: .75rem; font-weight: 600; }
.badge.inactive { background: #f1f5f9; color: var(--muted); }
.badge.pre-queue { background: #eff6ff; color: var(--brand); }
.badge.release { background: #f0fdf4; color: var(--success); }
.badge.paused { background: #fffbeb; color: var(--warn); }

/* ── Table ── */
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th { text-align: left; padding: .75rem 1rem; font-size: .75rem; text-transform: uppercase;
     letter-spacing: .04em; color: var(--muted); border-bottom: 2px solid var(--border); }
td { padding: .75rem 1rem; border-bottom: 1px solid var(--border); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #f8fafc; }

/* ── Forms ── */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: .4rem; }
label { font-size: .85rem; font-weight: 500; }
input, select { padding: .6rem .9rem; border: 1px solid var(--border); border-radius: 8px;
                font-size: .95rem; width: 100%; outline: none; }
input:focus, select:focus { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(37,99,235,.15); }
.hint { font-size: .75rem; color: var(--muted); }

/* ── Buttons ── */
.btn { display: inline-flex; align-items: center; gap: .4rem; padding: .55rem 1.1rem;
       border: none; border-radius: 8px; font-size: .9rem; font-weight: 600;
       cursor: pointer; text-decoration: none; transition: opacity .15s; }
.btn:hover { opacity: .85; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-warn { background: var(--warn); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-sm { padding: .35rem .75rem; font-size: .8rem; }

/* ── Progress bar ── */
.prog-track { background: var(--border); border-radius: 999px; height: 8px; overflow: hidden; }
.prog-bar { height: 100%; background: var(--brand); border-radius: 999px; transition: width .6s; }

/* ── Alerts ── */
.alert { padding: .75rem 1rem; border-radius: 8px; font-size: .9rem; margin-bottom: 1rem; }
.alert-success { background: #f0fdf4; color: var(--success); border: 1px solid #bbf7d0; }
.alert-error { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }

/* ── Login page ── */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 1rem; }
.login-card { background: var(--card); padding: 2.5rem 2rem; border-radius: var(--radius);
              box-shadow: 0 4px 24px rgba(0,0,0,.1); width: 100%; max-width: 380px; }
.login-card h1 { font-size: 1.5rem; margin-bottom: .25rem; }
.login-card .sub { color: var(--muted); font-size: .9rem; margin-bottom: 2rem; }

/* ── Misc ── */
.hidden { display: none !important; }
.flex-gap { display: flex; gap: .75rem; flex-wrap: wrap; align-items: center; }
.text-muted { color: var(--muted); font-size: .85rem; }
.mt1 { margin-top: 1rem; } .mt2 { margin-top: 1.5rem; }