:root {
  --bg: #131311;
  --surface: rgba(24, 24, 21, 0.82);
  --surface-2: #1e1e1a;
  --text: #ece8e1;
  --muted: #a5a095;
  --border: rgba(255, 255, 255, 0.08);
  --primary: #0f7b83;
  --primary-hover: #0b666d;
  --primary-soft: rgba(15, 123, 131, 0.14);
  --danger: #d06f95;
  --success: #7db160;
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.35);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: "Satoshi", sans-serif;
  color: var(--text);
  background:
    radial-gradient(
      circle at top left,
      rgba(15, 123, 131, 0.14),
      transparent 25%
    ),
    radial-gradient(
      circle at bottom right,
      rgba(255, 255, 255, 0.06),
      transparent 20%
    ),
    var(--bg);
}

.auth-shell {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-card {
  width: min(100%, 430px);
  padding: 28px;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg);
}

.brand {
  display: inline-flex;
  align-items: center;
  margin-bottom: 14px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 700;
}

h1 {
  margin: 0 0 6px;
  font-size: 30px;
}

.sub {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 14px;
}

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

.form-group label {
  display: inline-block;
  margin-bottom: 7px;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
}

.form-group input {
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  outline: none;
}

.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-soft);
}

.btn {
  min-height: 48px;
  border: 0;
  border-radius: 14px;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  position: relative;
}

.btn-primary {
  background: linear-gradient(180deg, var(--primary), var(--primary-hover));
  color: white;
}

.btn.loading {
  pointer-events: none;
  opacity: 0.9;
}

.btn.loading .btn-label {
  opacity: 0;
}

.btn.loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin-left: -8px;
  margin-top: -8px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.22);
  border-top-color: #fff;
  animation: spin 0.7s linear infinite;
}

.auth-foot {
  margin-top: 16px;
  font-size: 14px;
  color: var(--muted);
  text-align: center;
}

.auth-foot a {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
}

.auth-message {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 14px;
  font-size: 13px;
  border: 1px solid var(--border);
}

.auth-message.error {
  color: #ffd5df;
  background: rgba(208, 111, 149, 0.1);
  border-color: rgba(208, 111, 149, 0.2);
}

.auth-message.success {
  color: #d7f0cb;
  background: rgba(125, 177, 96, 0.1);
  border-color: rgba(125, 177, 96, 0.2);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}