:root {
  --bg: #071014;
  --panel: #101c22;
  --panel-soft: #0c171c;
  --line: #263b45;
  --line-strong: #36525e;
  --text: #f1f8fa;
  --muted: #92aab4;
  --accent: #18c8a5;
  --accent-dark: #0da487;
  --danger: #ff737a;
  --warning: #f3c66d;
  --shadow: 0 24px 70px rgba(0, 0, 0, .25);
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: radial-gradient(circle at 8% 0, #0c2930 0, transparent 30%), var(--bg);
  font: 15px/1.5 Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: inherit; text-decoration: none; }

header {
  position: sticky;
  top: 0;
  z-index: 10;
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 42px;
  padding: 0 max(28px, calc((100% - 1140px) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(7, 16, 20, .94);
  backdrop-filter: blur(14px);
}
.brand { display: flex; align-items: center; gap: 11px; font-size: 19px; font-weight: 800; line-height: 1; }
.brand > span {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: #04231e;
  background: linear-gradient(135deg, var(--accent), #2195b4);
  font-size: 13px;
}
.brand small { display: block; margin-top: 6px; color: var(--muted); font-size: 9px; letter-spacing: 2px; }
nav { display: flex; gap: 30px; color: var(--muted); }
nav a { padding: 25px 0 22px; border-bottom: 3px solid transparent; transition: .2s; }
nav a:hover, nav a.active { color: var(--text); border-bottom-color: var(--accent); }
nav a.disabled { opacity: .4; pointer-events: none; }
.user { margin-left: auto; display: flex; align-items: center; gap: 14px; color: #b7cbd2; }
.user a { padding: 9px 15px; border-radius: 10px; background: #1d2e37; color: var(--text); }

.container { width: min(1140px, calc(100% - 40px)); margin: 38px auto 70px; }
.title-row, .section-title { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
h1 { margin: 0; font-size: clamp(26px, 4vw, 32px); letter-spacing: -.5px; }
h2 { margin: 0 0 18px; font-size: 18px; }
p { color: var(--muted); }
.title-row p { margin: 6px 0 0; }
.version, .status { display: inline-flex; align-items: center; border-radius: 999px; white-space: nowrap; }
.version { padding: 8px 13px; border: 1px solid var(--line); color: #b4c8cf; }

.card, .pairing {
  margin-top: 22px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(16, 28, 34, .94);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .02);
}
.pairing { display: flex; justify-content: space-between; align-items: center; border-color: rgba(24, 200, 165, .45); }
.pairing strong { font-size: 18px; }
.pairing p { margin: 5px 0 0; }
.pairing code { padding: 15px 20px; border-radius: 12px; background: #061215; color: #65ecd0; font-size: 26px; letter-spacing: 5px; }

form label { display: block; margin: 0; color: #bed0d7; font-weight: 700; font-size: 13px; }
input, select {
  width: 100%;
  min-height: 44px;
  margin-top: 7px;
  padding: 11px 13px;
  border: 1px solid #324b56;
  border-radius: 10px;
  outline: none;
  color: var(--text);
  background: #071216;
  font: inherit;
}
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(24, 200, 165, .13); }
input[type="color"] { padding: 5px; cursor: pointer; }
input[type="file"] { padding: 8px; }
input[type="checkbox"] { width: 18px; min-height: 18px; margin: 0; accent-color: var(--accent); }
button {
  min-height: 44px;
  padding: 11px 19px;
  border: 0;
  border-radius: 10px;
  color: #04251e;
  background: linear-gradient(135deg, var(--accent), #15ad90);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition: transform .15s, filter .15s;
}
button:hover { transform: translateY(-1px); filter: brightness(1.06); }
button.danger { color: #ffb0b4; background: rgba(255, 115, 122, .14); }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.grid .full { grid-column: 1 / -1; }
.inline-form { display: grid; grid-template-columns: 1fr 1fr auto; gap: 16px; align-items: end; }
.media-upload { grid-template-columns: 1fr 1.35fr auto; }
.device-selector { max-width: 500px; }
.settings-grid { display: grid; grid-template-columns: 1.2fr 1fr .8fr .8fr auto; gap: 14px; align-items: end; }
.check { min-height: 44px; display: flex !important; align-items: center; gap: 9px; padding: 0 4px 4px; }

.playlist-row {
  display: grid;
  grid-template-columns: minmax(210px, 1fr) 100px 110px 90px auto auto;
  gap: 12px;
  align-items: end;
  padding: 16px;
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--panel-soft);
}
.playlist-row strong { display: block; font-size: 16px; }
.playlist-row small, .media-item small { display: block; color: var(--muted); }

.media-grid { display: grid; gap: 12px; }
.media-item {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  gap: 17px;
  align-items: center;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--panel-soft);
}
.media-preview { height: 68px; overflow: hidden; display: grid; place-items: center; border-radius: 9px; background: #061115; color: var(--accent); font-weight: 800; }
.media-preview img { width: 100%; height: 100%; object-fit: cover; }
.hint { margin: 13px 0 0; font-size: 13px; }

.alert { margin: 18px 0; padding: 12px 14px; border-radius: 10px; }
.alert.error { border: 1px solid rgba(255, 115, 122, .4); background: rgba(255, 115, 122, .1); color: #ffb4b8; }
.alert.ok { border: 1px solid rgba(24, 200, 165, .4); background: rgba(24, 200, 165, .1); color: #69ecd1; }
.empty { padding: 38px; text-align: center; color: var(--muted); border: 1px dashed #304853; border-radius: 12px; }
.section-title > span { color: var(--muted); }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 15px 12px; text-align: left; border-bottom: 1px solid #253740; }
th { color: #91b5c3; font-size: 12px; text-transform: uppercase; letter-spacing: .7px; }
td small { display: block; color: var(--muted); }
.status { padding: 6px 10px; font-size: 12px; }
.status.online { color: #55eaca; background: rgba(24, 200, 165, .12); }
.status.offline { color: #ff9da2; background: rgba(255, 115, 122, .12); }
.status.pending { color: var(--warning); background: rgba(243, 198, 109, .12); }

.auth { display: grid; place-items: center; padding: 24px; }
.auth-card { width: min(430px, 100%); padding: 34px; border: 1px solid var(--line); border-radius: 20px; background: rgba(16, 28, 34, .96); box-shadow: var(--shadow); }
.auth-card.wide { width: min(760px, 100%); }
.auth-card h1 { margin-top: 24px; }
.auth-card form label { margin-top: 14px; }
.auth-card button { margin-top: 18px; }

@media (max-width: 900px) {
  .playlist-row { grid-template-columns: 1fr 1fr 1fr; }
  .playlist-row > div { grid-column: 1 / -1; }
  .settings-grid { grid-template-columns: 1fr 1fr; }
  .settings-grid button { width: 100%; }
}

@media (max-width: 720px) {
  header { min-height: 64px; padding: 0 16px; gap: 16px; }
  header nav { display: none; }
  .container { width: min(100% - 24px, 1140px); margin-top: 24px; }
  .title-row { align-items: flex-start; }
  .card { padding: 18px; }
  .grid, .inline-form, .media-upload, .settings-grid, .playlist-row { grid-template-columns: 1fr; }
  .pairing { align-items: flex-start; flex-direction: column; gap: 18px; }
  .pairing code { font-size: 21px; }
  .media-item { grid-template-columns: 76px 1fr; }
  .media-item form { grid-column: 1 / -1; }
  .media-item button { width: 100%; }
  .auth-card { padding: 24px; }
  .user { font-size: 0; }
  .user a { font-size: 14px; }
}

body:not(.auth)::after {
  content: "InfoHub • Desenvolvido por Fabio Oliveira • infoservedu.com.br • © 2026";
  display: block;
  margin: -38px auto 22px;
  padding: 0 20px;
  color: #66808b;
  text-align: center;
  font-size: 11px;
  letter-spacing: .2px;
}
.version { font-size: 0; }
.version::after { content: "Cloud 0.3.0"; font-size: 14px; }