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

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Helvetica Neue", Arial, "Microsoft Yahei", sans-serif;
  background-color: #050505;
  color: #f5f5f5;
}

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top, #222 0, #050505 55%);
}

.admin-body {
  height: 100%;
}

.admin-page {
  align-items: flex-start;
  padding: 24px 16px;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  padding: 32px 28px 28px;
  border-radius: 16px;
  background: rgba(15, 15, 15, 0.96);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.admin-page .auth-card {
  max-width: 1080px;
}

.auth-brand {
  text-align: center;
  margin-bottom: 24px;
}

.auth-logo {
  font-size: 20px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
}

.auth-subtitle {
  margin-top: 8px;
  font-size: 13px;
  color: #999;
}

.auth-tabs {
  display: flex;
  margin-bottom: 20px;
  border-radius: 999px;
  padding: 3px;
  background: rgba(255, 255, 255, 0.04);
}

.auth-tab {
  flex: 1;
  border: none;
  outline: none;
  padding: 8px 0;
  border-radius: 999px;
  background: transparent;
  color: #aaa;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.auth-tab-active {
  background: #f5f5f5;
  color: #111;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.auth-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
}

.auth-field label {
  font-size: 13px;
  color: #bbb;
  display: block;
}

.auth-field input {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background-color: rgba(10, 10, 10, 0.9);
  color: #f5f5f5;
  font-size: 14px;
  width: 100%;
}

.auth-field input:focus {
  outline: none;
  border-color: #f5f5f5;
}

/* Captcha Styles */
.captcha-row {
  display: flex;
  gap: 10px;
  align-items: stretch;
}

.captcha-input {
  flex: 1;
}

.captcha-img {
  width: 120px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: border-color 0.2s;
}

.captcha-img:hover {
  border-color: #666;
}

.captcha-img svg {
  width: 100%;
  height: 100%;
  display: block;
}

.auth-button {
  margin-top: 10px;
  padding: 10px 14px;
  width: 100%;
  border-radius: 999px;
  border: none;
  outline: none;
  background: #f5f5f5;
  color: #111;
  font-size: 15px;
  cursor: pointer;
  transition: opacity 0.15s ease, transform 0.1s ease;
}

.auth-button:hover {
  opacity: 0.92;
}

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

.auth-button[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

.auth-guest-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 34px;
  margin-top: 8px;
  border-radius: 999px;
  color: #d7d7d7;
  text-decoration: none;
  font-size: 13px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.auth-guest-link:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.22);
}

.auth-message {
  margin-top: 14px;
  min-height: 18px;
  font-size: 13px;
}

.auth-message-error {
  color: #ff6b6b;
}

.auth-message-success {
  color: #7dd56f;
}

/* Auth Code Row (Existing) */
.auth-code-row {
  display: flex;
  gap: 10px;
}

.auth-code-btn {
  white-space: nowrap;
  padding: 0 16px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: #ccc;
  font-size: 13px;
  cursor: pointer;
}
.auth-code-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Input Group (Admin) */
.input-group {
  display: flex;
  gap: 10px;
}
.input-group input {
  flex: 1;
}
.code-btn {
  padding: 0 16px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: #ccc;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
}

/* admin layout */
.admin-layout {
  display: flex;
  gap: 16px;
  margin-top: 16px;
}

.admin-sidebar {
  width: 140px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.admin-sidebar-group-title {
  font-size: 12px;
  color: #777;
  padding: 4px 2px 2px;
}

.admin-sidebar-item {
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(10, 10, 10, 0.9);
  color: #bbb;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
}

.admin-sidebar-item-active {
  background: #f5f5f5;
  color: #111;
}

.admin-main {
  flex: 1;
}

.auth-link {
  color: #888;
  text-decoration: none;
  font-size: 13px;
  transition: color 0.2s;
}
.auth-link:hover {
  color: #f5f5f5;
  text-decoration: underline;
}