/* ── Reset & base ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0d1117;
  --bg-card:     #161b22;
  --bg-card-alt: #1c2128;
  --border:      #30363d;
  --border-muted:#21262d;
  --text:        #e6edf3;
  --text-muted:  #8b949e;
  --accent:      #2f81f7;
  --accent-hover:#388bfd;
  --success:     #3fb950;
  --warning:     #d29922;
  --danger:      #f85149;
  --danger-muted:#490202;
  --radius:      8px;
  --shadow:      0 1px 3px rgba(0,0,0,.4);
}

html { height: 100%; }

body {
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

/* ── Navbar ───────────────────────────────────────────────────── */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 56px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  color: var(--text-muted);
  font-size: 14px;
  padding: 4px 8px;
  border-radius: 6px;
  transition: color .15s, background .15s;
}
.nav-link:hover, .nav-link.active {
  color: var(--text);
  background: rgba(255,255,255,.06);
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 10px;
  border-left: 1px solid var(--border);
  padding-left: 20px;
}

.username { color: var(--text-muted); font-size: 13px; }

.user-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.role-admin  { background: rgba(47,129,247,.18); color: #79c0ff; border: 1px solid rgba(47,129,247,.3); }
.role-viewer { background: rgba(63,185,80,.18);  color: #56d364; border: 1px solid rgba(63,185,80,.3); }

.btn-logout {
  font-size: 13px;
  color: var(--text-muted);
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: border-color .15s, color .15s;
}
.btn-logout:hover { color: var(--text); border-color: var(--text-muted); }

/* ── Main content ─────────────────────────────────────────────── */
.main-content { max-width: 1100px; margin: 0 auto; padding: 32px 24px; }

/* ── Flash messages ───────────────────────────────────────────── */
.flash-container { display: flex; flex-direction: column; gap: 8px; margin-bottom: 24px; }
.flash {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 13.5px;
  gap: 12px;
}
.flash-success { background: rgba(63,185,80,.1); border: 1px solid rgba(63,185,80,.3); color: #56d364; }
.flash-danger  { background: rgba(248,81,73,.1);  border: 1px solid rgba(248,81,73,.3);  color: #ffa198; }
.flash-warning { background: rgba(210,153,34,.1); border: 1px solid rgba(210,153,34,.3); color: #e3b341; }
.flash-close { background: none; border: none; cursor: pointer; color: inherit; font-size: 18px; line-height: 1; }

/* ── Buttons ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .15s, border-color .15s, opacity .15s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: transparent; border-color: var(--border); color: var(--text); }
.btn-secondary:hover { background: rgba(255,255,255,.05); border-color: var(--text-muted); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: .88; }
.btn-full { width: 100%; justify-content: center; }
.mt-2 { margin-top: 12px; }

/* ── Alerts ───────────────────────────────────────────────────── */
.alert { padding: 12px 16px; border-radius: var(--radius); font-size: 13.5px; margin-bottom: 16px; }
.alert-danger { background: rgba(248,81,73,.1); border: 1px solid rgba(248,81,73,.3); color: #ffa198; }

/* ── Page header ──────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 28px;
  gap: 16px;
}
.page-title { font-size: 22px; font-weight: 600; }
.page-subtitle { color: var(--text-muted); font-size: 13px; margin-top: 2px; }
.back-link { color: var(--text-muted); font-size: 13px; display: inline-block; margin-bottom: 6px; }
.back-link:hover { color: var(--text); }
.mono { font-family: "SFMono-Regular", Consolas, monospace; }

/* ── Status badges ────────────────────────────────────────────── */
.status-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 999px;
  letter-spacing: .03em;
  text-transform: uppercase;
  white-space: nowrap;
}
.status-lg { font-size: 13px; padding: 4px 14px; align-self: center; }
.status-running    { background: rgba(63,185,80,.15); color: #56d364; border: 1px solid rgba(63,185,80,.3); }
.status-stopped, .status-off
                   { background: rgba(248,81,73,.12); color: #ffa198; border: 1px solid rgba(248,81,73,.25); }
.status-rebooting  { background: rgba(210,153,34,.15); color: #e3b341; border: 1px solid rgba(210,153,34,.3); }
.status-unknown, .status-error
                   { background: rgba(139,148,158,.12); color: var(--text-muted); border: 1px solid var(--border); }

/* ── Instance grid ────────────────────────────────────────────── */
.instance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.instance-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color .15s, box-shadow .15s;
  cursor: pointer;
}
.instance-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(47,129,247,.2);
}

.instance-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.instance-name { font-weight: 600; font-size: 15px; }

.instance-meta {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 12.5px;
}
.meta-item svg { flex-shrink: 0; opacity: .6; }

.instance-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 10px;
  border-top: 1px solid var(--border-muted);
  margin-top: auto;
}
.vps-id { font-family: monospace; font-size: 11.5px; color: var(--text-muted); }
.view-link { font-size: 12px; color: var(--accent); }

/* ── Empty state ──────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.empty-state svg { opacity: .3; }

/* ── Cards ────────────────────────────────────────────────────── */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  align-items: start;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.card-danger { border-color: rgba(248,81,73,.3); }

.card-header {
  padding: 14px 20px;
  font-weight: 600;
  font-size: 13px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: .05em;
  background: var(--bg-card-alt);
}

.card-body { padding: 20px; }

/* ── Detail list ──────────────────────────────────────────────── */
.detail-list { display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; }
.detail-list dt { color: var(--text-muted); font-size: 13px; white-space: nowrap; }
.detail-list dd { font-size: 13px; word-break: break-all; }

.ip-tag {
  display: inline-block;
  font-family: monospace;
  font-size: 12px;
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 7px;
  margin: 1px;
}

/* ── Snapshot ─────────────────────────────────────────────────── */
.snapshot-info { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 4px; }
.snapshot-info svg { flex-shrink: 0; margin-top: 2px; opacity: .6; }
.snapshot-label { font-weight: 500; }
.snapshot-date { font-size: 12px; color: var(--text-muted); }
.snapshot-desc { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.text-muted { color: var(--text-muted); font-size: 13px; }

/* ── Login page ───────────────────────────────────────────────── */
body.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg);
}

.login-wrapper { width: 100%; max-width: 400px; padding: 24px; }

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  box-shadow: var(--shadow);
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}
.login-header svg { color: var(--accent); margin-bottom: 16px; }
.login-header h1 { font-size: 20px; font-weight: 600; margin-bottom: 4px; }
.login-header p { color: var(--text-muted); font-size: 13.5px; }

.login-form { display: flex; flex-direction: column; gap: 18px; }

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 13px; font-weight: 500; color: var(--text-muted); }
.form-group input {
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 14px;
  transition: border-color .15s, box-shadow .15s;
}
.form-group input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(47,129,247,.15);
}
.form-group input::placeholder { color: var(--text-muted); opacity: .7; }