/*
 * Tampilan portal reslab-csub.cloud. Warna sama dengan IoT Platform dan MQTT Client
 * (variabel --app-...). Tema gelap mengikuti pengaturan sistem (prefers-color-scheme),
 * karena halaman ini sengaja tanpa JavaScript (tidak ada tombol tema).
 * Font: Inter bila terpasang di komputer pengguna, selain itu font sistem.
 * Tidak memuat font dari Google supaya tidak ada permintaan ke pihak luar.
 */
:root {
  --app-bg: #f4f6f9;
  --app-surface: #ffffff;
  --app-border: #e4e7ec;
  --app-text: #1d2433;
  --app-muted: #667085;
  --app-accent: #2a78d6;
  --app-accent-hover: #1f63b5;
  --app-accent-soft: rgba(42, 120, 214, 0.1);
  --app-green: #16a34a;
  --app-green-soft: rgba(22, 163, 74, 0.12);
  --app-shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 1px 3px rgba(16, 24, 40, 0.06);
  --app-shadow-hover: 0 8px 20px rgba(16, 24, 40, 0.08);
  --radius: 14px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --app-bg: #0f1115;
    --app-surface: #171a20;
    --app-border: #2a2f38;
    --app-text: #e6e8ec;
    --app-muted: #9aa3b2;
    --app-accent: #3987e5;
    --app-accent-hover: #5b9dec;
    --app-accent-soft: rgba(57, 135, 229, 0.16);
    --app-green: #22c55e;
    --app-green-soft: rgba(34, 197, 94, 0.14);
    --app-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
    --app-shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.5);
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--app-bg);
  color: var(--app-text);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main { flex: 1; }

a { color: var(--app-accent); }
a:hover { color: var(--app-accent-hover); }
a:focus-visible, .button:focus-visible {
  outline: 3px solid var(--app-accent-soft);
  outline-offset: 2px;
  border-radius: 6px;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.875em;
  background: var(--app-accent-soft);
  padding: 0.1em 0.35em;
  border-radius: 5px;
  word-break: break-word;
}

.container { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--app-muted); font-size: 0.9rem; }

/* ---- bilah atas ---- */
.topbar {
  border-bottom: 1px solid var(--app-border);
  background: var(--app-surface);
}
.topbar-inner { display: flex; align-items: center; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand {
  display: inline-flex; align-items: center; gap: 10px; margin-right: auto;
  color: var(--app-text); text-decoration: none; font-weight: 700; font-size: 1.1rem;
}
.topnav { display: flex; gap: 18px; flex-wrap: wrap; }
.topnav a { color: var(--app-muted); text-decoration: none; font-weight: 500; }
.topnav a:hover { color: var(--app-accent); }

/* ---- pembuka ---- */
.hero { padding: 64px 0 40px; }
.eyebrow {
  display: inline-block; margin: 0 0 12px; padding: 2px 10px; border-radius: 999px;
  background: var(--app-accent-soft); color: var(--app-accent); font-size: 0.85rem; font-weight: 600;
}
.hero h1 { margin: 0 0 12px; font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.2; letter-spacing: -0.02em; }
.lead { margin: 0; max-width: 46rem; font-size: 1.1rem; color: var(--app-muted); }
.lead strong { color: var(--app-text); }

/* ---- kartu aplikasi ---- */
.apps { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.app-card {
  display: flex; flex-direction: column;
  background: var(--app-surface); border: 1px solid var(--app-border); border-radius: var(--radius);
  box-shadow: var(--app-shadow); padding: 28px;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.app-card:hover { box-shadow: var(--app-shadow-hover); transform: translateY(-2px); }
.app-card h2 { margin: 16px 0 0; font-size: 1.4rem; }
.app-card p { margin: 8px 0 0; }
.app-host { color: var(--app-muted); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9rem; }
.app-icon {
  width: 52px; height: 52px; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
}
.app-icon-iot { background: var(--app-accent-soft); color: var(--app-accent); }
.app-icon-mqtt { background: var(--app-green-soft); color: var(--app-green); }
.features { margin: 16px 0 24px; padding-left: 1.2rem; color: var(--app-muted); }
.features li { margin: 4px 0; }
.app-card .button { margin-top: auto; align-self: flex-start; }

/* ---- tombol ---- */
.button {
  display: inline-block; padding: 10px 18px; border-radius: 10px; font-weight: 600; text-decoration: none;
  border: 1px solid var(--app-border); color: var(--app-text); background: var(--app-surface);
}
.button:hover { border-color: var(--app-accent); color: var(--app-accent); }
.button-primary { background: var(--app-accent); border-color: var(--app-accent); color: #fff; }
.button-primary:hover { background: var(--app-accent-hover); border-color: var(--app-accent-hover); color: #fff; }

/* ---- bagian teks ---- */
.section { margin-top: 40px; }
.notice {
  background: var(--app-surface); border: 1px solid var(--app-border); border-left: 4px solid var(--app-accent);
  border-radius: var(--radius); padding: 20px 24px;
}
.notice h2, .connect h2 { margin: 0 0 8px; font-size: 1.2rem; }
.notice p { margin: 0; }

.table-wrap { overflow-x: auto; margin: 16px 0 8px; border: 1px solid var(--app-border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; background: var(--app-surface); }
th, td { padding: 12px 16px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--app-border); }
th { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--app-muted); }
tbody tr:last-child td { border-bottom: 0; }

/* Layar sempit: setiap baris tabel menjadi kartu, label kolom dari atribut data-label. */
@media (max-width: 640px) {
  table, tbody, tr, td { display: block; width: 100%; }
  thead { display: none; }
  tr { padding: 12px 16px; border-bottom: 1px solid var(--app-border); }
  tbody tr:last-child { border-bottom: 0; }
  td { padding: 2px 0; border-bottom: 0; }
  td::before {
    content: attr(data-label); display: block;
    font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--app-muted);
  }
  td + td { margin-top: 8px; }
}

/* ---- kaki ---- */
.footer { margin-top: 56px; border-top: 1px solid var(--app-border); background: var(--app-surface); }
.footer-inner {
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between;
  padding-top: 20px; padding-bottom: 20px; color: var(--app-muted); font-size: 0.9rem;
}

/* ---- 404 ---- */
.not-found { text-align: center; padding-top: 96px; padding-bottom: 96px; }
.not-found h1 { margin: 20px 0 8px; }
.not-found .lead { margin: 0 auto; }
.links { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 28px; }

@media (prefers-reduced-motion: reduce) {
  .app-card { transition: none; }
  .app-card:hover { transform: none; }
}