:root {
  --bg: #0d0d0d;
  --surface: #161616;
  --surface2: #1f1f1f;
  --surface3: #272727;
  --accent: #00e5a0;
  --accent-dim: rgba(0, 229, 160, 0.12);
  --accent2: #00c4d4;
  --text: #e8e8e8;
  --text-muted: #888;
  --border: #2a2a2a;
  --danger: #ff4d4d;
  --warn: #ffb347;
  --radius: 8px;
  --radius-lg: 14px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Noto Sans JP', 'Yu Gothic', sans-serif;
  line-height: 1.6;
  font-size: 15px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { opacity: 0.8; }

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: opacity 0.15s, transform 0.1s;
}
.btn:hover { opacity: 0.85; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-accent { background: var(--accent); color: #0d0d0d; }
.btn-outline { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn-surface { background: var(--surface2); color: var(--text); border: 1px solid var(--border); }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-lg { padding: 14px 32px; font-size: 16px; }

/* ---- CARDS ---- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.card-sm { padding: 16px; }

/* ---- BADGES ---- */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.badge-accent { background: var(--accent-dim); color: var(--accent); }
.badge-muted { background: var(--surface3); color: var(--text-muted); }
.badge-warn { background: rgba(255,179,71,0.15); color: var(--warn); }

/* ---- FORMS ---- */
.form-group { margin-bottom: 18px; }
.form-label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 500;
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 10px 14px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
  font-family: inherit;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent);
}
.form-textarea { resize: vertical; min-height: 80px; }

/* ---- TABLE ---- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th {
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  vertical-align: middle;
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--surface2); }

/* ---- SITE HEADER (LP) ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,13,13,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 40px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.5px;
}
.site-logo span { color: var(--text-muted); font-weight: 400; font-size: 12px; margin-left: 8px; }
.site-nav { display: flex; align-items: center; gap: 8px; }
.site-nav a {
  color: var(--text-muted);
  font-size: 14px;
  padding: 6px 12px;
  border-radius: var(--radius);
  transition: color 0.15s, background 0.15s;
}
.site-nav a:hover { color: var(--text); background: var(--surface2); }

/* ---- APP LAYOUT (portals) ---- */
.app-layout {
  display: flex;
  min-height: 100vh;
}
.sidebar {
  width: 220px;
  min-width: 220px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.sidebar-logo {
  padding: 20px 20px 16px;
  font-size: 18px;
  font-weight: 800;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
  letter-spacing: -0.5px;
}
.sidebar-section {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 16px 20px 6px;
}
.sidebar nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--text-muted);
  font-size: 14px;
  border-radius: 0;
  transition: color 0.15s, background 0.15s;
}
.sidebar nav a:hover { color: var(--text); background: var(--surface2); }
.sidebar nav a.active { color: var(--accent); background: var(--accent-dim); font-weight: 600; }
.sidebar-footer {
  margin-top: auto;
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
}
.app-main { flex: 1; min-width: 0; }
.app-topbar {
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}
.app-topbar h1 { font-size: 18px; font-weight: 700; }
.user-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.app-content { padding: 32px; }

/* ---- STATS GRID ---- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
}
.stat-label { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.stat-value { font-size: 28px; font-weight: 800; color: var(--accent); }
.stat-sub { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ---- SECTION HEADER ---- */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.section-header h2 { font-size: 16px; font-weight: 700; }

/* ---- UTILITIES ---- */
.mt-4 { margin-top: 4px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent); }
.text-sm { font-size: 13px; }
.text-lg { font-size: 17px; }
.fw-700 { font-weight: 700; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }

/* ---- RADIO PLAN CARDS ---- */
.plan-options { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }
.plan-option { position: relative; }
.plan-option input { position: absolute; opacity: 0; }
.plan-option label {
  display: block;
  padding: 16px;
  background: var(--surface2);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.15s;
  text-align: center;
}
.plan-option input:checked + label { border-color: var(--accent); background: var(--accent-dim); }
.plan-option label .price { font-size: 22px; font-weight: 800; color: var(--accent); }
.plan-option label .plan-name { font-size: 13px; font-weight: 600; margin-bottom: 4px; }
.plan-option label .plan-desc { font-size: 11px; color: var(--text-muted); }