:root {
  color-scheme: light;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  background: #052747;
  color: #17212b;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  min-height: 100vh;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(420px, 0.75fr);
}

.welcome-panel {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(42px, 6vw, 90px);
  color: #ffffff;
  background:
    radial-gradient(circle at 12% 18%, rgba(25, 128, 190, 0.48), transparent 28%),
    radial-gradient(circle at 88% 78%, rgba(8, 122, 117, 0.38), transparent 32%),
    linear-gradient(145deg, #052747 0%, #073763 48%, #1266a8 100%);
}

.welcome-panel::before,
.welcome-panel::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 50%;
  pointer-events: none;
}

.welcome-panel::before {
  width: 540px;
  height: 540px;
  top: -230px;
  right: -170px;
}

.welcome-panel::after {
  width: 380px;
  height: 380px;
  right: 8%;
  bottom: -260px;
}

.welcome-content,
.environment-label {
  position: relative;
  z-index: 1;
}

.welcome-content {
  width: min(720px, 100%);
  margin: auto 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 26px;
  color: #c8ddeb;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.eyebrow-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #50d890;
  box-shadow: 0 0 0 6px rgba(80, 216, 144, 0.13);
}

h1 {
  max-width: 700px;
  margin: 0;
  font-size: clamp(2.7rem, 5.2vw, 5.4rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.welcome-copy {
  max-width: 650px;
  margin: 30px 0 42px;
  color: #d8e7f2;
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  line-height: 1.7;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature {
  min-height: 170px;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(14px);
}

.feature-number {
  display: block;
  margin-bottom: 28px;
  color: #69a1c8;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.feature strong {
  font-size: 0.98rem;
}

.feature p {
  margin: 8px 0 0;
  color: #c8ddeb;
  font-size: 0.83rem;
  line-height: 1.5;
}

.environment-label {
  margin: 38px 0 0;
  color: #9fc3dc;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.signin-panel {
  display: grid;
  place-items: center;
  padding: clamp(28px, 5vw, 72px);
  background:
    radial-gradient(circle at 100% 0%, #e7f2fa 0%, transparent 33%),
    #f6fafc;
}

.signin-card {
  width: min(430px, 100%);
  padding: clamp(30px, 4vw, 48px);
  border: 1px solid #dfe6ec;
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 28px 70px rgba(5, 39, 71, 0.14);
}

.brand-logo {
  display: block;
  width: min(285px, 100%);
  height: auto;
  margin-bottom: 32px;
}

.product-label {
  margin-bottom: 18px;
  color: #17669e;
  font-size: 0.77rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

h2 {
  margin: 0;
  color: #052747;
  font-size: clamp(2rem, 4vw, 2.65rem);
  letter-spacing: -0.04em;
}

.signin-copy {
  margin: 14px 0 28px;
  color: #617181;
  line-height: 1.65;
}

.signin-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 13px;
  width: 100%;
  min-height: 54px;
  padding: 13px 20px;
  border-radius: 12px;
  color: #ffffff;
  background: #1266a8;
  box-shadow: 0 10px 24px rgba(18, 102, 168, 0.25);
  font-weight: 700;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.signin-button:hover {
  transform: translateY(-1px);
  background: #073763;
  box-shadow: 0 14px 28px rgba(7, 55, 99, 0.28);
}

.signin-button:focus-visible {
  outline: 3px solid #69a1c8;
  outline-offset: 3px;
}

.microsoft-mark {
  display: grid;
  grid-template-columns: repeat(2, 8px);
  grid-template-rows: repeat(2, 8px);
  gap: 2px;
}

.microsoft-mark span:nth-child(1) { background: #f25022; }
.microsoft-mark span:nth-child(2) { background: #7fba00; }
.microsoft-mark span:nth-child(3) { background: #00a4ef; }
.microsoft-mark span:nth-child(4) { background: #ffb900; }

.security-note {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-top: 25px;
  padding: 16px;
  border-radius: 12px;
  color: #435668;
  background: #eaf4fb;
  font-size: 0.78rem;
  line-height: 1.5;
}

.lock-icon {
  position: relative;
  flex: 0 0 auto;
  width: 17px;
  height: 14px;
  margin-top: 5px;
  border-radius: 3px;
  background: #17669e;
}

.lock-icon::before {
  content: "";
  position: absolute;
  width: 9px;
  height: 9px;
  left: 4px;
  top: -7px;
  border: 2px solid #17669e;
  border-bottom: 0;
  border-radius: 8px 8px 0 0;
}

.access-notice {
  margin: 24px 0 0;
  color: #82909b;
  font-size: 0.75rem;
  line-height: 1.5;
  text-align: center;
}

@media (max-width: 960px) {
  .login-shell {
    grid-template-columns: 1fr;
  }

  .welcome-panel {
    min-height: auto;
    padding: 48px 28px;
  }

  h1 {
    max-width: 700px;
    font-size: clamp(2.5rem, 9vw, 4.2rem);
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .feature {
    min-height: auto;
    display: flex;
    gap: 18px;
  }

  .feature-number {
    margin: 2px 0 0;
  }

  .environment-label {
    display: none;
  }

  .signin-panel {
    padding: 42px 20px 54px;
  }
}

@media (max-width: 520px) {
  .welcome-panel {
    padding: 38px 22px;
  }

  .welcome-copy {
    margin-bottom: 30px;
  }

  .feature-grid {
    display: none;
  }

  .signin-card {
    padding: 28px 22px;
    border-radius: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .signin-button {
    transition: none;
  }
}