:root {
  color-scheme: light dark;
  --bg-main: #0b0f19;
  --text-main: #f9fafb;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  --panel-bg: rgba(18, 24, 38, 0.85);
  --panel-border: rgba(255, 255, 255, 0.08);
  --card-hover-border: #6366f1;
  --input-bg: rgba(0, 0, 0, 0.4);
  --input-border: rgba(255, 255, 255, 0.12);
  --btn-bg: #6366f1;
  --btn-hover: #4f46e5;
  --btn-text: #ffffff;
  --link-color: #38bdf8;
  --badge-success-bg: rgba(16, 185, 129, 0.15);
  --badge-success-text: #34d399;
  --badge-muted-bg: rgba(255, 255, 255, 0.06);
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-main: #f3f4f6;
    --text-main: #111827;
    --text-muted: #4b5563;
    --text-dim: #9ca3af;
    --panel-bg: rgba(255, 255, 255, 0.92);
    --panel-border: rgba(0, 0, 0, 0.1);
    --card-hover-border: #4f46e5;
    --input-bg: #ffffff;
    --input-border: rgba(0, 0, 0, 0.15);
    --btn-bg: #4f46e5;
    --btn-hover: #4338ca;
    --btn-text: #ffffff;
    --link-color: #0284c7;
    --badge-success-bg: rgba(16, 185, 129, 0.12);
    --badge-success-text: #047857;
    --badge-muted-bg: rgba(0, 0, 0, 0.05);
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-system);
  font-size: 15px;
  line-height: 1.5;
}

.platform-shell {
  width: min(70rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 4rem) 0;
}

header { margin-bottom: 2rem; }
.eyebrow, .card-kicker {
  color: var(--text-muted);
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

h1 { margin: .35rem 0; font-size: clamp(2.2rem, 7vw, 4rem); line-height: .98; font-weight: 800; }
h2 { margin: .45rem 0; font-size: 1.3rem; font-weight: 700; }
a { color: var(--link-color); }

.panel, .page-card {
  border: 1px solid var(--panel-border);
  border-radius: 1rem;
  background: var(--panel-bg);
  box-shadow: 0 .5rem 2rem rgba(0, 0, 0, .2);
  backdrop-filter: blur(12px);
}

.panel { max-width: 38rem; padding: 1.5rem; margin-bottom: 1.5rem; }
.page-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1rem; }
.page-card { display: block; padding: 1.2rem; color: inherit; text-decoration: none; transition: all 0.2s; }
.page-card:hover { border-color: var(--card-hover-border); transform: translateY(-2px); }

form { display: grid; gap: 1rem; }
label { display: grid; gap: .4rem; font-weight: 700; font-size: 0.9rem; }
label span { color: var(--text-muted); font-size: .82rem; font-weight: 500; }

input, button {
  min-height: 2.8rem;
  border: 1px solid var(--input-border);
  border-radius: .7rem;
  padding: .65rem .8rem;
  font: inherit;
  font-size: 16px; /* iOS zoom fix */
}

input {
  background: var(--input-bg);
  color: var(--text-main);
}
input:focus { border-color: var(--btn-bg); outline: none; }

button {
  cursor: pointer;
  border-color: transparent;
  background: var(--btn-bg);
  color: var(--btn-text);
  font-weight: 700;
  transition: all 0.2s;
}
button:hover { background: var(--btn-hover); }
button.secondary { background: var(--badge-muted-bg); color: var(--text-main); border: 1px solid var(--panel-border); }
button.secondary:hover { background: var(--input-border); }

.actions { display: flex; flex-wrap: wrap; gap: .7rem; }
[role=status] { min-height: 1.4em; color: var(--text-muted); font-size: 0.85rem; }

.onboarding-panel { border-color: var(--btn-bg); background: var(--badge-success-bg); }
.onboarding-panel .eyebrow { color: var(--badge-success-text); }
.onboarding-steps { display: grid; gap: .6rem; padding-left: 1.4rem; color: var(--text-muted); }

/* SESSION LIST STYLES FOR SETTINGS PAGE */
.session-list { display: flex; flex-direction: column; gap: 10px; margin: 12px 0; }
.session-item {
  background: var(--badge-muted-bg);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.session-item.current-session {
  border-color: var(--btn-bg);
  background: rgba(99, 102, 241, 0.1);
}

.session-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.session-ua { font-weight: 700; font-size: 0.9rem; color: var(--text-main); }
.session-ip {
  display: inline-block;
  font-family: monospace;
  font-size: 0.78rem;
  color: var(--link-color);
  background: var(--input-bg);
  padding: 2px 6px;
  border-radius: 4px;
}

.session-dates { font-size: 0.78rem; color: var(--text-muted); }

.badge-current {
  background: var(--badge-success-bg);
  color: var(--badge-success-text);
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.btn-revoke {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
  padding: 4px 10px;
  min-height: 32px;
  font-size: 0.78rem;
  border-radius: 6px;
}
.btn-revoke:hover { background: rgba(239, 68, 68, 0.25); }