:root {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: #e5eef8;
  background:
    radial-gradient(circle at top left, rgba(62, 110, 255, 0.28), transparent 34%),
    radial-gradient(circle at top right, rgba(16, 185, 129, 0.2), transparent 28%),
    linear-gradient(160deg, #07111f 0%, #0f1d33 48%, #07111f 100%);
  color-scheme: dark;
  --panel: rgba(8, 15, 29, 0.82);
  --panel-border: rgba(148, 163, 184, 0.18);
  --muted: #98a7bb;
  --text: #e5eef8;
  --accent: #61c6a8;
  --accent-strong: #2dd4bf;
  --danger: #fca5a5;
  --danger-bg: rgba(239, 68, 68, 0.14);
  --success: #9ae6b4;
  --success-bg: rgba(34, 197, 94, 0.14);
  --notice-bg: rgba(96, 165, 250, 0.12);
  --input-bg: rgba(15, 23, 42, 0.86);
  --shadow: 0 24px 60px rgba(1, 7, 16, 0.38);
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; color: var(--text); }
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at center, black 45%, transparent 100%);
  pointer-events: none;
  opacity: .14;
}

a { color: #d6fff4; text-decoration: none; }
a:hover { text-decoration: underline; }

.shell { width: min(1200px, calc(100% - 32px)); margin: 0 auto; padding: 32px 0 48px; }
.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.topbar, .feature-panel, .login-panel, .chat-panel, .sidebar-panel, .main-panel { padding: 28px; }
.topbar { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; margin-bottom: 24px; }
.topbar-copy h1, .hero h1 { margin: 18px 0 10px; font-size: clamp(2rem, 4vw, 3.6rem); line-height: 1.05; }
.topbar-copy p, .hero p { margin: 0; max-width: 720px; color: var(--muted); line-height: 1.6; }
.topbar-actions { display: grid; gap: 16px; justify-items: end; min-width: 320px; }

.hero { display: flex; justify-content: space-between; gap: 20px; align-items: flex-start; margin-bottom: 24px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 999px;
  border: 1px solid rgba(97,198,168,.35); background: rgba(97,198,168,.1); color: #d6fff4;
  font-size: 12px; letter-spacing: .08em; text-transform: uppercase;
}

.auth-layout, .content-grid, .dashboard-grid { display: grid; gap: 24px; }
.auth-layout { grid-template-columns: minmax(0, 1.15fr) minmax(320px, 420px); }
.content-grid { grid-template-columns: minmax(280px, 340px) minmax(0, 1fr); }
.settings-grid { align-items: start; }
.settings-stack { display: grid; gap: 24px; }
.settings-admin-grid { display: grid; gap: 24px; grid-template-columns: minmax(0, 1.2fr) minmax(280px, 360px); align-items: start; }
.profile-grid { grid-template-columns: minmax(0, 1fr) minmax(280px, 360px); }
.dashboard-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.feature-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); margin-top: 28px; }
.feature-card, .dashboard-card, .agent-card {
  border-radius: 20px; border: 1px solid rgba(148,163,184,.14); background: rgba(148,163,184,.08);
}
.feature-card { padding: 18px; }
.feature-card strong { display: block; margin-bottom: 8px; font-size: 1rem; }
.feature-card span { color: var(--muted); line-height: 1.5; }

.dashboard-card { display: grid; gap: 14px; padding: 22px; color: inherit; text-decoration: none; }
.dashboard-card:hover, .agent-card:hover { transform: translateY(-2px); text-decoration: none; }
.card-kicker { color: #d6fff4; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.card-meta { color: var(--muted); font-size: .95rem; }
.card-actions { display: flex; align-items: center; }
.dashboard-form-card { align-content: start; }

.section-header { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; margin-bottom: 20px; }
.section-header h2, .login-panel h2, .chat-panel h2, .sidebar-panel h2, .feature-panel h2 { margin: 0 0 10px; font-size: 1.55rem; }
.section-header p, .login-panel p, .feature-panel p, .sidebar-panel p { margin: 0; color: var(--muted); line-height: 1.55; }
.small-gap { margin-bottom: 16px; }

.nav-links, .button-row, .meta-row, .identity, .detail-row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.compact-row { justify-content: flex-end; }
.compact-actions { justify-items: end; }
.nav-links { justify-content: flex-end; }
.nav-link {
  padding: 10px 14px; border-radius: 999px; color: var(--muted); border: 1px solid rgba(148,163,184,.14);
  background: rgba(148,163,184,.08); text-decoration: none;
}
.nav-link.is-active, .nav-link:hover { color: var(--text); border-color: rgba(45,212,191,.4); text-decoration: none; }

.identity { justify-content: flex-end; color: var(--muted); }
.identity strong { color: var(--text); font-size: 1rem; }
.role-pill, .pill {
  display: inline-flex; align-items: center; padding: 6px 10px; border-radius: 999px; font-size: 12px;
  letter-spacing: .08em; text-transform: uppercase; border: 1px solid rgba(96,165,250,.22); background: rgba(96,165,250,.16); color: #cfe3ff;
}
.muted-pill { background: rgba(148,163,184,.12); border-color: rgba(148,163,184,.18); color: var(--muted); }
.wrap-row { justify-content: flex-end; }

.stack { display: grid; gap: 14px; }
.compact-stack { margin-bottom: 18px; }
.agent-card { display: grid; gap: 10px; padding: 16px; transition: transform .18s ease, border-color .18s ease, background .18s ease; }
.agent-card.is-active { border-color: rgba(45,212,191,.45); background: rgba(45,212,191,.12); }
.agent-card-title { font-weight: 700; font-size: 1rem; }
.agent-card-text { color: var(--muted); line-height: 1.45; }

.notice, .success, .error {
  margin: 0 0 18px; padding: 12px 14px; border-radius: 16px; border: 1px solid transparent;
}
.notice { background: var(--notice-bg); border-color: rgba(96,165,250,.24); color: #d9e8ff; }
.success { background: var(--success-bg); border-color: rgba(34,197,94,.3); color: var(--success); }
.error { background: var(--danger-bg); border-color: rgba(248,113,113,.3); color: var(--danger); }
.notice-error { margin-bottom: 20px; }

.settings-form, .login-form, .chat-form { display: grid; gap: 16px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.field, .detail-list { display: grid; gap: 8px; }
.field-wide { grid-column: 1 / -1; }
.field label { font-size: .95rem; color: #d7e2f0; }
.field input, .field select, textarea {
  width: 100%; border-radius: 16px; border: 1px solid rgba(148,163,184,.2); background: var(--input-bg); color: var(--text);
  padding: 14px 16px; font: inherit; transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
.field input:focus, .field select:focus, textarea:focus {
  outline: none; border-color: rgba(45,212,191,.8); box-shadow: 0 0 0 4px rgba(45,212,191,.16); transform: translateY(-1px);
}
textarea { min-height: 120px; resize: vertical; }
.field-error { color: var(--danger); font-size: .9rem; }
.helper-text { color: var(--muted); font-size: .92rem; margin: 0; }
.text-link { color: #d6fff4; }

button {
  border: 0; border-radius: 14px; cursor: pointer; font: inherit; padding: 12px 18px;
  transition: transform .18s ease, opacity .18s ease, background .18s ease;
}
button:hover { transform: translateY(-1px); }
button[type="submit"] { background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%); color: #04221d; font-weight: 700; }
.secondary-button { background: rgba(148,163,184,.12); color: var(--text); border: 1px solid rgba(148,163,184,.16); }
.danger-button { background: linear-gradient(135deg, #ef4444 0%, #fb7185 100%); color: #fff; font-weight: 700; }

.messages { min-height: 46vh; display: flex; flex-direction: column; gap: 14px; margin: 22px 0; }
.message { padding: 16px 18px; border-radius: 20px; border: 1px solid rgba(148,163,184,.12); background: rgba(15,23,42,.7); }
.message-user { background: rgba(97,198,168,.12); border-color: rgba(97,198,168,.24); }
.message-assistant { background: rgba(59,130,246,.09); border-color: rgba(96,165,250,.2); }
.role { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; opacity: .72; margin-bottom: 8px; }
.content { white-space: pre-wrap; line-height: 1.6; }

.empty-state {
  display: grid; gap: 12px; justify-items: start; padding: 24px; border-radius: 20px;
  background: rgba(148,163,184,.08); border: 1px dashed rgba(148,163,184,.22);
}
.compact-empty { padding: 18px; }
.empty-state h2, .empty-state p { margin: 0; }
.empty-state p { color: var(--muted); }

.detail-list { margin-top: 8px; }
.detail-row {
  justify-content: space-between; padding: 12px 14px; border-radius: 16px; background: rgba(148,163,184,.08);
  border: 1px solid rgba(148,163,184,.14);
}
.detail-row span { color: var(--muted); }
.detail-row strong { color: var(--text); }
.inset-panel {
  padding: 22px; border-radius: 24px; background: rgba(148,163,184,.06);
  border: 1px solid rgba(148,163,184,.14);
}
.danger-zone {
  margin-top: 20px;
  padding: 18px;
  border-radius: 20px;
  background: var(--danger-bg);
  border: 1px solid rgba(248,113,113,.3);
  display: grid;
  gap: 12px;
}
.danger-zone p { margin: 0; color: #fecaca; line-height: 1.55; }
.user-list { gap: 12px; }
.user-row { align-items: flex-start; gap: 16px; }
.tight-stack { gap: 4px; }
.tight-stack span { color: var(--muted); font-size: .92rem; }

@media (max-width: 1100px) {
  .dashboard-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .content-grid, .profile-grid { grid-template-columns: 1fr; }
  .settings-admin-grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .shell { width: min(100% - 24px, 1200px); padding-top: 20px; }
  .topbar, .hero, .auth-layout, .section-header { flex-direction: column; grid-template-columns: 1fr; align-items: stretch; }
  .topbar-actions { min-width: 0; justify-items: stretch; }
  .nav-links, .identity, .compact-row { justify-content: flex-start; }
  .dashboard-grid, .form-grid { grid-template-columns: 1fr; }
  .topbar, .feature-panel, .login-panel, .chat-panel, .sidebar-panel, .main-panel { padding: 22px; }
}