/* AutomateAuth — modern login UI
   - System font stack, generous whitespace, glass-card aesthetic
   - Auto dark mode via prefers-color-scheme
   - Designed to look at home next to Stripe / Linear / Vercel auth UIs
*/

:root {
  --bg-grad-1: #eef2ff;
  --bg-grad-2: #f5f3ff;
  --card: rgba(255, 255, 255, 0.72);
  --card-border: rgba(15, 23, 42, 0.06);
  --text: #0f172a;
  --muted: #64748b;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-soft: rgba(79, 70, 229, 0.08);
  --error-bg: #fef2f2;
  --error-text: #b91c1c;
  --error-border: #fecaca;
  --success-bg: #ecfdf5;
  --success-text: #047857;
  --success-border: #a7f3d0;
  --border: #e2e8f0;
  --input-bg: #ffffff;
  --shadow: 0 30px 60px -15px rgba(15, 23, 42, 0.18);
  --radius: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-grad-1: #0f172a;
    --bg-grad-2: #1e1b4b;
    --card: rgba(30, 41, 59, 0.72);
    --card-border: rgba(255, 255, 255, 0.06);
    --text: #e2e8f0;
    --muted: #94a3b8;
    --primary: #818cf8;
    --primary-hover: #a5b4fc;
    --primary-soft: rgba(129, 140, 248, 0.16);
    --error-bg: rgba(127, 29, 29, 0.3);
    --error-text: #fca5a5;
    --error-border: rgba(220, 38, 38, 0.4);
    --success-bg: rgba(6, 95, 70, 0.3);
    --success-text: #6ee7b7;
    --success-border: rgba(16, 185, 129, 0.4);
    --border: #334155;
    --input-bg: rgba(15, 23, 42, 0.6);
    --shadow: 0 30px 80px -15px rgba(0, 0, 0, 0.6);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at -10% -10%, var(--bg-grad-2), transparent 60%),
    radial-gradient(1000px 500px at 110% 110%, var(--bg-grad-1), transparent 60%),
    var(--bg-grad-1);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--card);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 40px 36px;
  box-shadow: var(--shadow);
  animation: cardIn 320ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-card h1 {
  margin: 0 0 6px;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.auth-card .lede {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 0.95rem;
}

.field { display: flex; flex-direction: column; margin-bottom: 18px; }
.field.check { flex-direction: row; align-items: center; gap: 8px; font-size: 0.9rem; color: var(--muted); }
.field label { font-size: 0.85rem; margin-bottom: 6px; font-weight: 500; }
.field input[type="email"],
.field input[type="password"],
.field input[type="tel"],
.field input[type="text"] {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.95rem;
  background: var(--input-bg);
  color: var(--text);
  outline: none;
  transition: border-color 120ms, box-shadow 120ms;
}
.field input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-soft);
}
.field .err { color: var(--error-text); font-size: 0.8rem; margin-top: 6px; }
.field small { color: var(--muted); font-size: 0.8rem; margin-top: 6px; }

.btn {
  width: 100%;
  padding: 12px 14px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 120ms, transform 80ms;
}
.btn:hover:not(:disabled) { background: var(--primary-hover); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.btn.provider {
  background: var(--input-bg);
  color: var(--text);
  border: 1px solid var(--border);
  margin-bottom: 8px;
}
.btn.provider:hover:not(:disabled) {
  background: var(--primary-soft);
  border-color: var(--primary);
}

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 22px 0 18px;
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.divider::before, .divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.alert {
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 0.88rem;
  margin-bottom: 18px;
  border: 1px solid;
}
.alert.error { background: var(--error-bg); color: var(--error-text); border-color: var(--error-border); }
.alert.success { background: var(--success-bg); color: var(--success-text); border-color: var(--success-border); }

.foot {
  margin: 12px 0 0;
  font-size: 0.85rem;
  text-align: center;
  color: var(--muted);
}
.foot a { color: var(--primary); text-decoration: none; font-weight: 500; }
.foot a:hover { text-decoration: underline; }

/* TOTP enrollment */
.qr {
  text-align: center;
  margin: 12px 0 24px;
  padding: 16px;
  border-radius: 12px;
  background: var(--primary-soft);
}
.qr img { width: 200px; height: 200px; image-rendering: pixelated; border-radius: 8px; }
.qr p { margin: 12px 0 0; }
.qr code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  word-break: break-all;
  background: var(--input-bg);
  padding: 6px 8px;
  border-radius: 6px;
  display: inline-block;
}

.muted { color: var(--muted); }

.signup-steps { display: flex; gap: 12px; list-style: none; padding: 0; margin: 24px 0 16px; color: var(--muted); font-size: .78rem; }
.signup-steps li { display: flex; flex: 1; align-items: center; gap: 7px; }
.signup-steps span { display: grid; place-items: center; flex-shrink: 0; width: 24px; height: 24px; border: 1px solid var(--muted); border-radius: 50%; }
.signup-steps [aria-current="step"] { color: var(--primary); font-weight: 650; }
.signup-steps [aria-current="step"] span { background: var(--primary); color: white; border-color: var(--primary); }
.signup-guidance { padding: 14px 16px; margin-bottom: 24px; border-radius: 12px; background: var(--primary-soft); font-size: .85rem; line-height: 1.6; }
@media (max-width: 480px) { .signup-steps li { flex-direction: column; text-align: center; } }