:root {
  --backend-auth-accent: #17a2b8;
  --backend-auth-accent-hover: #53c6d6;
  --backend-auth-text: #ffffff;
  --backend-auth-text-soft: rgba(255, 255, 255, 0.72);
  --backend-auth-text-muted: rgba(255, 255, 255, 0.58);
  --backend-auth-surface: rgba(9, 13, 18, 0.74);
  --backend-auth-surface-border: rgba(255, 255, 255, 0.08);
  --backend-auth-input: rgba(255, 255, 255, 0.06);
  --backend-auth-input-border: rgba(255, 255, 255, 0.14);
  --backend-auth-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

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

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

body.backend-auth-body {
  min-height: 100vh;
  background: #05080c;
  color: var(--backend-auth-text);
  font-family: Arial, sans-serif;
}

.backend-auth-screen {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  overflow: hidden;
}

.backend-auth-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.backend-auth-overlay {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 100vh;
  padding: 24px;
  background: rgba(0, 0, 0, 0.58);
}

.backend-auth-card {
  width: 100%;
  max-width: 360px;
  padding: 32px 28px;
  border: 1px solid var(--backend-auth-surface-border);
  border-radius: 12px;
  background: var(--backend-auth-surface);
  box-shadow: var(--backend-auth-shadow);
  backdrop-filter: blur(10px);
}

.backend-auth-logo {
  margin: 0 0 14px;
  color: var(--backend-auth-text);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-align: center;
  text-transform: uppercase;
}

.backend-auth-logo-brand {
  color: #2d9548;
}

.backend-auth-logo-mark {
  font-weight: 400;
}

.backend-auth-subtitle {
  margin: 0 0 32px;
  color: var(--backend-auth-text-muted);
  font-size: 14px;
  line-height: 1.7;
  text-align: center;
}

.backend-auth-subtitle-left {
  text-align: left;
}

.backend-auth-status,
.backend-auth-errors {
  margin: 0 0 20px;
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 13px;
}

.backend-auth-status {
  border: 1px solid rgba(35, 191, 8, 0.25);
  background: rgba(35, 191, 8, 0.12);
  color: #9ef18f;
}

.backend-auth-errors {
  padding-left: 28px;
  border: 1px solid rgba(220, 53, 69, 0.25);
  background: rgba(220, 53, 69, 0.12);
  color: #ffb5bd;
}

.backend-auth-errors li + li {
  margin-top: 4px;
}

.backend-auth-form-group + .backend-auth-form-group,
.backend-auth-form-group + .backend-auth-actions,
.backend-auth-form-group + .backend-auth-submit,
.backend-auth-actions + .backend-auth-submit,
.backend-auth-submit + .backend-auth-footer {
  margin-top: 18px;
}

.backend-auth-card > form + .backend-auth-footer {
  margin-top: 18px;
}

.backend-auth-label {
  display: block;
  margin-bottom: 8px;
  color: var(--backend-auth-text-soft);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.backend-auth-input {
  display: block;
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--backend-auth-input-border);
  border-radius: 8px;
  background: var(--backend-auth-input);
  color: var(--backend-auth-text);
  font: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.backend-auth-input::placeholder {
  color: rgba(255, 255, 255, 0.38);
}

.backend-auth-input:focus {
  outline: none;
  border-color: rgba(23, 162, 184, 0.8);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(23, 162, 184, 0.18);
}

.backend-auth-link,
.backend-auth-footer a {
  color: var(--backend-auth-accent);
  text-decoration: none;
}

.backend-auth-link:hover,
.backend-auth-footer a:hover {
  color: var(--backend-auth-accent-hover);
}

.backend-auth-help {
  margin-top: 10px;
  font-size: 12px;
}

.backend-auth-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.backend-auth-remember {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--backend-auth-text-soft);
  font-size: 13px;
}

.backend-auth-remember input {
  margin: 0;
  accent-color: var(--backend-auth-accent);
}

.backend-auth-submit {
  width: 100%;
  padding: 13px 18px;
  border: 0;
  border-radius: 8px;
  background: var(--backend-auth-accent);
  color: #fff;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.backend-auth-submit:hover {
  background: var(--backend-auth-accent-hover);
}

.backend-auth-submit:active {
  transform: translateY(1px);
}

.backend-auth-submit-secondary {
  background: transparent;
  border: 1px solid var(--backend-auth-input-border);
  color: var(--backend-auth-text);
}

.backend-auth-submit-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
}

.backend-auth-footer {
  color: var(--backend-auth-text-muted);
  font-size: 13px;
  text-align: center;
}

@media (max-width: 575px) {
  .backend-auth-overlay {
    padding: 16px;
  }

  .backend-auth-card {
    max-width: none;
    padding: 24px 20px;
    border-radius: 10px;
  }

  .backend-auth-actions {
    flex-direction: column;
    align-items: flex-start;
  }
}