:root {
  --bg: #f5f5f7;
  --surface: #ffffff;
  --border: #e5e7eb;
  --text: #111827;
  --muted: #6b7280;
  --accent: #000000;
  --green: #16a34a;
  --red: #dc2626;
  --orange: #ea580c;
  --blue: #2563eb;
  --radius: 1rem;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── Layout ─────────────────────────────────────────────────────────────────── */

.header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: .875rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-logo { font-size: 1.1rem; font-weight: 800; letter-spacing: -.02em; }
.header-logo span { color: var(--muted); font-weight: 400; }
.header-right { display: flex; align-items: center; gap: 1rem; }
.header-user { font-size: .85rem; color: var(--muted); }
.btn-logout {
  font-size: .8rem; background: none; border: 1px solid var(--border);
  border-radius: 6px; padding: .3rem .75rem; cursor: pointer; color: var(--muted);
}
.btn-logout:hover { background: var(--bg); }

.main { padding: 1.5rem; max-width: 1200px; margin: 0 auto; }

.page-title { font-size: 1.5rem; font-weight: 700; margin-bottom: .25rem; }
.page-sub { font-size: .875rem; color: var(--muted); margin-bottom: 1.5rem; }

/* ── Cards ──────────────────────────────────────────────────────────────────── */

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}
.card-label { font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin-bottom: .5rem; }
.card-valor { font-size: 2rem; font-weight: 800; letter-spacing: -.03em; line-height: 1; }
.card-sub { font-size: .75rem; color: var(--muted); margin-top: .35rem; }

.card.destaque { border-color: var(--accent); background: var(--accent); color: #fff; }
.card.destaque .card-label { color: rgba(255,255,255,.6); }
.card.destaque .card-sub { color: rgba(255,255,255,.5); }

/* ── Frescor badge ──────────────────────────────────────────────────────────── */

.badge {
  display: inline-flex; align-items: center; gap: .3rem;
  font-size: .7rem; font-weight: 600; padding: .2rem .5rem;
  border-radius: 99px; border: 1px solid;
}
.badge.verde { color: var(--green); border-color: #bbf7d0; background: #f0fdf4; }
.badge.vermelho { color: var(--red); border-color: #fecaca; background: #fef2f2; }
.badge.cinza { color: var(--muted); border-color: var(--border); background: var(--bg); }

/* ── Seção ──────────────────────────────────────────────────────────────────── */

.secao {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}
.secao-titulo {
  font-size: .8rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .06em; color: var(--muted); margin-bottom: 1rem;
  display: flex; align-items: center; justify-content: space-between;
}

/* ── Barras de canal ─────────────────────────────────────────────────────────── */

.canal-row { display: grid; grid-template-columns: 110px 1fr 40px; align-items: center; gap: .75rem; margin-bottom: .6rem; font-size: .85rem; }
.canal-nome { color: var(--text); font-weight: 500; }
.canal-barra-wrap { height: 8px; background: var(--bg); border-radius: 99px; overflow: hidden; }
.canal-barra { height: 100%; border-radius: 99px; transition: width .6s ease; }
.canal-n { text-align: right; font-weight: 700; color: var(--text); }

/* ── Período seletor ─────────────────────────────────────────────────────────── */

.periodo { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; margin-bottom: 1.25rem; }
.periodo label { font-size: .8rem; color: var(--muted); font-weight: 600; }
.periodo input[type=date] {
  font-size: .85rem; border: 1px solid var(--border); border-radius: 8px;
  padding: .35rem .6rem; background: var(--surface); color: var(--text);
  outline: none; cursor: pointer;
}
.periodo input[type=date]:focus { border-color: var(--accent); }
.btn-atualizar {
  font-size: .82rem; background: var(--accent); color: #fff;
  border: none; border-radius: 8px; padding: .35rem .9rem; cursor: pointer; font-weight: 600;
}
.btn-atualizar:hover { opacity: .85; }

/* ── Botões de período rápido ────────────────────────────────────────────────── */

.periodo { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; margin-bottom: 1.25rem; }
.periodo-rapido { display: flex; gap: .4rem; flex-wrap: wrap; }
.btn-periodo {
  font-size: .8rem; font-weight: 600; padding: .3rem .75rem;
  border: 1px solid var(--border); border-radius: 99px;
  background: var(--surface); color: var(--muted); cursor: pointer;
  transition: all .15s;
}
.btn-periodo:hover { border-color: var(--accent); color: var(--text); }
.btn-periodo.ativo { background: var(--accent); color: #fff; border-color: var(--accent); }

.periodo-custom {
  display: none; gap: .5rem; align-items: center; flex-wrap: wrap;
  margin-top: .5rem; width: 100%;
}
.periodo-custom input[type=date] {
  font-size: .85rem; border: 1px solid var(--border); border-radius: 8px;
  padding: .35rem .6rem; background: var(--surface); color: var(--text);
  outline: none; cursor: pointer;
}
.periodo-custom input[type=date]:focus { border-color: var(--accent); }

/* ── Label de seção ──────────────────────────────────────────────────────────── */

.secao-label {
  font-size: .7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: var(--muted); margin-bottom: .5rem; margin-top: .25rem;
}

/* ── Cards coloridos (derivados) ─────────────────────────────────────────────── */

.card.destaque-azul { border-color: #bfdbfe; background: #eff6ff; }
.card.destaque-azul .card-label { color: #1d4ed8; }
.card.destaque-azul .card-valor { color: #1e40af; }
.card.destaque-azul .card-sub   { color: #3b82f6; }

.card.destaque-verde { border-color: #bbf7d0; background: #f0fdf4; }
.card.destaque-verde .card-label { color: #15803d; }
.card.destaque-verde .card-valor { color: #166534; }
.card.destaque-verde .card-sub   { color: #16a34a; }

/* ── Tela de login ──────────────────────────────────────────────────────────── */

.login-wrap {
  min-height: 100vh; display: flex; align-items: center;
  justify-content: center; background: var(--bg);
}
.login-box {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 1.25rem; padding: 2.5rem; width: 100%; max-width: 380px;
  box-shadow: 0 4px 24px rgba(0,0,0,.08);
}
.login-logo { font-size: 1.4rem; font-weight: 800; margin-bottom: .25rem; }
.login-sub { font-size: .85rem; color: var(--muted); margin-bottom: 2rem; }
.login-campo { margin-bottom: 1rem; }
.login-campo label { display: block; font-size: .8rem; font-weight: 600; margin-bottom: .4rem; color: var(--muted); }
.login-campo input {
  width: 100%; padding: .65rem .85rem; border: 1px solid var(--border);
  border-radius: 8px; font-size: .95rem; outline: none; background: var(--surface);
}
.login-campo input:focus { border-color: var(--accent); }
.btn-login {
  width: 100%; padding: .75rem; background: var(--accent); color: #fff;
  border: none; border-radius: 8px; font-size: 1rem; font-weight: 700;
  cursor: pointer; margin-top: .5rem;
}
.btn-login:hover { opacity: .85; }
.btn-login:disabled { opacity: .5; cursor: not-allowed; }
.login-erro { color: var(--red); font-size: .82rem; margin-top: .75rem; min-height: 1.2em; }

/* ── Loading ─────────────────────────────────────────────────────────────────── */

.loading { color: var(--muted); font-size: .85rem; padding: 2rem 0; text-align: center; }
.skeleton { background: linear-gradient(90deg, var(--bg) 25%, var(--border) 50%, var(--bg) 75%); background-size: 200% 100%; animation: shimmer 1.4s infinite; border-radius: 6px; }
@keyframes shimmer { 0% { background-position: 200% 0 } 100% { background-position: -200% 0 } }

@media (max-width: 600px) {
  .main { padding: 1rem; }
  .cards { grid-template-columns: 1fr 1fr; }
}