:root {
  --color-bg: #0f172a;
  --color-bg-soft: #1e293b;
  --color-primary: #1d4ed8;
  --color-primary-light: #3b82f6;
  --color-accent: #38bdf8;
  --color-white: #ffffff;
  --color-text: #0f172a;
  --color-muted: #64748b;
  --color-border: #e2e8f0;
  --color-error: #dc2626;
  --color-success: #16a34a;
  --shadow-card: 0 25px 70px rgba(2, 6, 23, 0.35);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--color-text);
  background:
    radial-gradient(
      circle at top left,
      rgba(56, 189, 248, 0.22),
      transparent 30%
    ),
    linear-gradient(
      135deg,
      #020617 0%,
      var(--color-bg) 48%,
      var(--color-bg-soft) 100%
    );
}

.login-container {
  width: min(1180px, 92%);
  min-height: 100vh;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 4rem;
}

.login-info {
  color: var(--color-white);
}

.login-info h1 {
  max-width: 720px;
  margin-bottom: 1.5rem;
  font-size: clamp(2.6rem, 5vw, 4.8rem);
  line-height: 1;
  letter-spacing: -0.06em;
}

.login-info p {
  max-width: 660px;
  margin-bottom: 2rem;
  color: #cbd5e1;
  font-size: 1.08rem;
  line-height: 1.8;
}

.login-info ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: 1rem;
  max-width: 620px;
  list-style: none;
}

.login-info li {
  padding: 1rem 1.1rem;
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 1rem;
  background: rgba(15, 23, 42, 0.62);
  color: #e2e8f0;
  font-weight: 700;
  backdrop-filter: blur(14px);
}

.login-info li::before {
  content: "✓";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.35rem;
  height: 1.35rem;
  margin-right: 0.55rem;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.18);
  color: var(--color-accent);
  font-size: 0.85rem;
}

.login-panel {
  padding: 2.4rem;
  border-radius: 1.6rem;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-card);
}

.login-panel h2 {
  margin-bottom: 1.8rem;
  color: var(--color-text);
  font-size: 1.8rem;
  text-align: center;
}

#loginForm {
  display: grid;
  gap: 1.2rem;
}

.field {
  display: grid;
  gap: 0.45rem;
}

.field label {
  color: #334155;
  font-size: 0.92rem;
  font-weight: 700;
}

.field input {
  width: 100%;
  padding: 0.95rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 0.9rem;
  background: #f8fafc;
  color: var(--color-text);
  font-size: 1rem;
  outline: none;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease;
}

.field input:focus {
  border-color: var(--color-primary-light);
  background: var(--color-white);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.14);
}

button[type="submit"] {
  width: 100%;
  margin-top: 0.4rem;
  padding: 1rem;
  border: none;
  border-radius: 0.95rem;
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-primary-light)
  );
  color: var(--color-white);
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.3);
}

#message {
  min-height: 1.25rem;
  text-align: center;
  font-size: 0.92rem;
  font-weight: 700;
}

#message.error {
  color: var(--color-error);
}

#message.success {
  color: var(--color-success);
}

@media (max-width: 920px) {
  .login-container {
    grid-template-columns: 1fr;
    padding: 3rem 0;
    gap: 2.5rem;
  }

  .login-info {
    text-align: center;
  }

  .login-info p {
    margin-inline: auto;
  }

  .login-info ul {
    margin-inline: auto;
  }
}

@media (max-width: 560px) {
  .login-container {
    width: min(100% - 2rem, 1180px);
  }

  .login-info ul {
    grid-template-columns: 1fr;
  }

  .login-panel {
    padding: 1.5rem;
  }
}

.login-demo-box {
  margin-top: 2rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 1rem;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.login-demo-text {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.login-demo-text strong {
  font-size: 0.95rem;
  color: #fff;
  font-weight: 700;
}

.login-demo-text span {
  font-size: 0.83rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.5;
}

.login-demo-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.login-demo-btn {
  display: inline-block;
  padding: 0.5rem 1.1rem;
  border-radius: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.2s;
}

.login-demo-btn:hover {
  opacity: 0.85;
}

.login-demo-btn.primary {
  background: #3b82f6;
  color: #fff;
}

.login-demo-btn.secondary {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
}