:root {
  color-scheme: dark;
  --ink: #f8fafc;
  --muted: #b9c7c5;
  --primary: #14b8a6;
  --violet: #a855f7;
  --danger: #fecaca;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at 20% 20%, rgba(20, 184, 166, 0.3), transparent 28%),
    radial-gradient(circle at 82% 22%, rgba(168, 85, 247, 0.28), transparent 30%),
    linear-gradient(135deg, rgba(3, 8, 6, 0.9), rgba(7, 17, 15, 0.92)),
    url("https://images.unsplash.com/photo-1558494949-ef010cbdcc31?auto=format&fit=crop&w=1800&q=80");
  background-size: cover;
  background-position: center;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent 82%);
  pointer-events: none;
}

.login-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(440px, 100%);
  border: 1px solid rgba(148, 163, 184, 0.26);
  border-radius: 8px;
  padding: 30px;
  background: rgba(7, 17, 15, 0.86);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.46), 0 0 46px rgba(20, 184, 166, 0.12);
  backdrop-filter: blur(14px);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 6vw, 42px);
  line-height: 1.02;
  letter-spacing: 0;
}

.intro {
  margin: 0 0 24px;
  color: var(--muted);
  line-height: 1.5;
}

.login-form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  color: #dce7e4;
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 48px;
  border: 1px solid rgba(148, 163, 184, 0.36);
  border-radius: 6px;
  padding: 0 13px;
  background: rgba(3, 8, 6, 0.76);
  color: var(--ink);
  font-size: 16px;
  outline: none;
}

input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.18);
}

button {
  min-height: 50px;
  border: 0;
  border-radius: 6px;
  background: linear-gradient(135deg, #0f766e, #7c3aed);
  color: #ffffff;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
}

button:disabled {
  cursor: wait;
  opacity: 0.74;
}

.login-error {
  margin: 0;
  border: 1px solid rgba(248, 113, 113, 0.34);
  border-radius: 6px;
  padding: 10px 12px;
  background: rgba(127, 29, 29, 0.34);
  color: var(--danger);
}

.is-hidden {
  display: none !important;
}