@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-surface: rgba(255, 255, 255, 0.82);
  --color-background: #0f172a;
  --color-text: #0f172a;
  --color-muted: #64748b;
  --shadow-soft: 0 30px 60px -25px rgba(15, 23, 42, 0.45);
  --radius-lg: 24px;
  --transition: all 0.25s ease;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Poppins', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.35), transparent 55%),
              radial-gradient(circle at 80% 0%, rgba(14, 165, 233, 0.35), transparent 55%),
              linear-gradient(160deg, #0f172a 0%, #1e293b 45%, #111827 100%);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}

.auth-body {
  position: relative;
  overflow: hidden;
}

.auth-background {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(96, 165, 250, 0.25), transparent 55%),
              radial-gradient(circle at 80% 0%, rgba(14, 165, 233, 0.2), transparent 60%),
              radial-gradient(circle at 50% 80%, rgba(129, 140, 248, 0.2), transparent 60%);
  filter: blur(40px);
  opacity: 0.9;
}

.auth-main {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
}

.auth-card {
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.brand {
  text-align: center;
  color: #0f172a;
}

.SkillTrackerLogo {
  height: 72px;
  width: auto;
  margin-bottom: 8px;
}

.brand h1 {
  font-size: clamp(2rem, 4vw, 2.4rem);
  margin: 0;
  font-weight: 600;
}

.brand-tagline {
  margin: 8px auto 0;
  max-width: 26ch;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-muted);
  font-weight: 500;
}

.input-group span {
  letter-spacing: 0.02em;
}

.input-group input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid rgba(15, 23, 42, 0.1);
  background-color: rgba(255, 255, 255, 0.9);
  font-size: 1rem;
  color: var(--color-text);
  transition: var(--transition);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.input-group input:focus {
  outline: none;
  border-color: rgba(37, 99, 235, 0.6);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.primary-button {
  appearance: none;
  border: none;
  border-radius: 16px;
  padding: 14px 18px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #fff;
  background: linear-gradient(135deg, var(--color-primary), #38bdf8);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 20px 35px -20px rgba(37, 99, 235, 0.75);
}

.primary-button:hover,
.primary-button:focus-visible {
  background: linear-gradient(135deg, var(--color-primary-dark), #0ea5e9);
  transform: translateY(-1px);
}

.primary-button:focus-visible {
  outline: 2px solid rgba(14, 165, 233, 0.5);
  outline-offset: 3px;
}

@media (max-width: 600px) {
  body {
    padding: 24px 16px;
  }

  .auth-card {
    padding: 32px 24px;
    gap: 24px;
  }

  .brand-tagline {
    font-size: 0.9rem;
  }
}