:root {
  --bg: #0f1115;
  --card: #141820;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --alert: #ef4444;
  --input: #1f2430;
  --border: #2a3140;
}
* { box-sizing: border-box; }
html, body {
  height: 100%;
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(1200px 800px at 70% 20%, rgba(79,70,229,0.15), transparent 60%),
              radial-gradient(900px 600px at 10% 80%, rgba(16,185,129,0.10), transparent 60%),
              var(--bg);
  color: var(--text);
}
.container { min-height: 100%; display: grid; place-items: center; padding: 24px; }
.login-card {
  width: 100%; max-width: 420px;
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.4);
}
.logo-wrap { display: flex; justify-content: center; margin-bottom: 16px; }
.logo {
  width: 100%;
  max-width: 180px; /* desktop */
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 4px 16px rgba(79,70,229,0.35));
}
.title { text-align: center; margin: 6px 0 4px 0; font-size: 24px; font-weight: 600; }
.subtitle { text-align: center; margin: 0 0 20px 0; color: var(--muted); font-size: 14px; }
.alert {
  background: rgba(239,68,68,0.12); color: #fecaca;
  border: 1px solid rgba(239,68,68,0.35); padding: 10px 12px;
  border-radius: 10px; margin-bottom: 14px; font-size: 14px;
}
.login-form .form-group { display: flex; flex-direction: column; gap: 8px; margin-bottom: 14px; }
label { color: var(--muted); font-size: 13px; }
input[type="email"], input[type="password"] {
  background: var(--input); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 12px 14px; font-size: 14px; outline: none;
  transition: border-color .2s, box-shadow .2s;
}
input[type="email"]:focus, input[type="password"]:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,0.25);
}
.password-wrapper { position: relative; display: flex; align-items: center; }
.password-wrapper input { width: 100%; padding-right: 42px; }
.password-wrapper button {
  position: absolute; right: 8px; background: transparent; border: none;
  color: var(--muted); cursor: pointer; font-size: 16px; padding: 6px; border-radius: 8px;
}
.password-wrapper button:hover { background: rgba(255,255,255,0.06); color: var(--text); }
.btn {
  width: 100%; background: linear-gradient(90deg, var(--primary), #7c3aed);
  border: none; color: white; padding: 12px 16px; border-radius: 10px; font-weight: 600; font-size: 14px;
  cursor: pointer; transition: transform .05s ease, filter .2s ease, box-shadow .2s;
  box-shadow: 0 6px 24px rgba(124,58,237,0.3);
}
.btn:hover { filter: brightness(1.05); }
.btn:active { transform: translateY(1px); }
.footer { margin-top: 16px; text-align: center; color: var(--muted); font-size: 12px; }
/* Mobile */
@media (max-width: 480px) {
  .login-card { padding: 24px 18px; border-radius: 14px; }
  .title { font-size: 22px; }
  .logo { max-width: 140px; }
}