/* ─── Reset ─────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
a { text-decoration: none; }
button, input, select { font-family: inherit; }

/* ─── CSS Variables ──────────────────────── */
:root {
  --bg:        #f4f7ff;
  --card:      #ffffff;
  --border:    #e2e8f5;
  --text:      #1e293b;
  --text2:     #475569;
  --text3:     #64748b;
  --accent:    #5850ec;
  --accent-glow: rgba(88,80,236,0.15);
  --shadow:    0 4px 6px -1px rgba(88,80,236,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(88,80,236,0.12);
  --font:      'Inter', sans-serif;
  --red:       #ef4444;
  --green:     #10b981;
  --red-bg:    rgba(239,68,68,0.08);
  --green-bg:  rgba(16,185,129,0.08);
}

html.dark {
  --bg:        #020408;
  --card:      #0f1218;
  --border:    #1e293b;
  --text:      #ffffff;
  --text2:     #f1f5f9;
  --text3:     #cbd5e1;
  --accent:    #a5b4fc;
  --accent-glow: rgba(165,180,252,0.45);
  --red:       #fca5a5;
  --green:     #6ee7b7;
  --red-bg:    rgba(239,68,68,0.15);
  --green-bg:  rgba(16,185,129,0.15);
}

/* ─── Page layout ────────────────────────── */
html { font-family: var(--font); background: var(--bg); color: var(--text); font-size: 15px; line-height: 1.5; -webkit-font-smoothing: antialiased; }
body { min-height: 100vh; background: var(--bg); display: flex; align-items: center; justify-content: center; padding: 2rem 1.5rem; position: relative; transition: background 0.3s ease; }

/* ─── Animated background blobs ─────────── */
.auth-bg { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.blob {
  position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.4;
  animation: floatBlob 15s ease-in-out infinite;
}
.blob-1 { width: 500px; height: 500px; background: radial-gradient(circle, #818cf8, #4f46e5); top: -100px; left: -100px; }
.blob-2 { width: 400px; height: 400px; background: radial-gradient(circle, #c084fc, #7c3aed); bottom: -100px; right: -100px; animation-delay: -5s; }

@keyframes floatBlob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -50px) scale(1.1); }
  66% { transform: translate(-20px, 40px) scale(0.9); }
}

/* ─── Auth card ──────────────────────────── */
.auth-wrap { position: relative; z-index: 1; width: 100%; max-width: 400px; }
.auth-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 2.25rem 2rem;
  box-shadow: var(--shadow-lg);
  animation: cardIn 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
html.dark .auth-card {
  background: rgba(17, 20, 29, 0.85);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(20px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ─── Typography ─────────────────────────── */
.auth-title { font-size: 24px; font-weight: 900; letter-spacing: -1px; color: var(--text); margin-bottom: 6px; }
.auth-sub { font-size: 13.5px; color: var(--text2); margin-bottom: 1.5rem; font-weight: 500; line-height: 1.5; }

/* ─── Form elements ──────────────────────── */
.fg { margin-bottom: 0.85rem; }
.fl { font-size: 10px; font-weight: 800; color: var(--text3); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 6px; display: block; }
.fi-wrap { position: relative; }
.fi {
  width: 100%; padding: 11px 14px; border: 1px solid var(--border); border-radius: 12px;
  font-size: 14.5px; color: var(--text); background: var(--card); transition: all 0.2s;
  font-family: var(--font);
}
html.dark .fi { background: rgba(255,255,255,0.03); }
.fi:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); outline: none; }
.fi.has-icon { padding-left: 44px; }
.fi-icon { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: var(--accent); opacity: 0.6; pointer-events: none; font-size: 14px; }

/* ─── Buttons ────────────────────────────── */
.btn-auth {
  width: 100%; height: 48px; background: var(--accent); color: #fff; border: none; border-radius: 12px;
  font-size: 15px; font-weight: 800; cursor: pointer; transition: all 0.2s;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  box-shadow: 0 8px 16px var(--accent-glow);
  font-family: var(--font);
}
.btn-auth:hover { transform: translateY(-1px); box-shadow: 0 10px 20px var(--accent-glow); opacity: 0.95; }
.btn-auth:active { transform: translateY(0); }

.btn-passkey {
  background: rgba(255, 255, 255, 0.05); color: var(--text); border: 1px solid var(--border);
  box-shadow: none; margin-top: 0.75rem; height: 44px; font-size: 14px;
}
.btn-passkey:hover { background: var(--accent); border-color: var(--accent); color: #fff; box-shadow: 0 8px 16px var(--accent-glow); }

.btn-ghost {
  width: 100%; height: 44px; background: transparent; color: var(--text2); border: 1px solid var(--border); border-radius: 12px;
  font-size: 13px; font-weight: 700; cursor: pointer; transition: all 0.2s;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.btn-ghost:hover { background: var(--border); color: var(--text); }

/* ─── Divider ────────────────────────────── */
.auth-divider { display: flex; align-items: center; gap: 1rem; color: var(--text3); font-size: 9px; font-weight: 800; text-transform: uppercase; letter-spacing: 1.5px; margin: 1.25rem 0; }
.auth-divider::before, .auth-divider::after { content: ''; flex: 1; height: 1px; background: var(--border); opacity: 0.5; }

/* ─── Alerts ─────────────────────────────── */
.alert { padding: 10px 14px; border-radius: 12px; font-size: 12.5px; line-height: 1.4; margin-bottom: 1.25rem; display: flex; gap: 10px; }
.alert-ok  { background: var(--green-bg); color: var(--green); border: 1px solid rgba(16,185,129,0.1); }
.alert-err { background: var(--red-bg); color: var(--red); border: 1px solid rgba(239,68,68,0.1); }

/* ─── Strength Meter ─────────────────────── */
.strength-bar { height: 4px; background: var(--border); border-radius: 2px; margin-top: 8px; overflow: hidden; }
.strength-fill { height: 100%; width: 0; transition: all 0.3s; }
.strength-label { font-size: 10px; font-weight: 800; text-transform: uppercase; margin-top: 4px; letter-spacing: 0.5px; }

.match-hint { font-size: 11px; font-weight: 600; margin-top: 6px; display: flex; align-items: center; gap: 6px; }
.match-hint.ok { color: var(--green); }
.match-hint.bad { color: var(--red); }

/* ─── Icon Header ────────────────────────── */
.auth-icon-hd {
  width: 52px; height: 52px; border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), #4f46e5);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: #fff; margin-bottom: 1.25rem;
  box-shadow: 0 8px 16px var(--accent-glow);
  border: 1px solid rgba(255,255,255,0.1);
}
html.dark .auth-icon-hd { box-shadow: 0 15px 30px rgba(0,0,0,0.5); }

/* ─── Links & footer text ────────────────── */
.auth-footer { text-align: center; margin-top: 1.5rem; font-size: 14px; color: var(--text2); font-weight: 500; }
.auth-footer a, .auth-link { color: var(--accent); font-weight: 800; transition: all 0.2s; text-decoration: none; }
.auth-footer a:hover, .auth-link:hover { filter: brightness(1.2); text-decoration: underline; }

/* ─── Responsive ─────────────────────────── */
@media (max-width: 480px) {
  body { padding: 1rem; }
  .auth-card { padding: 1.75rem 1.25rem 1.5rem; }
}

.theme-toggle {
  position: fixed; top: 1.5rem; right: 1.5rem; z-index: 100;
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--card); border: 1px solid var(--border);
  color: var(--text); font-size: 18px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s; box-shadow: var(--shadow);
}
.theme-toggle:hover { transform: scale(1.1); border-color: var(--accent); color: var(--accent); }
html.dark .theme-toggle i::before { content: "\f185"; } /* fa-sun */