:root {
  --bg-color: #f6f8fa;
  --card-bg: #ffffff;
  --text-main: #1f2328;
  --text-muted: #656d76;
  --border-color: #d0d7deb3;
  --primary: #1f883d;
  --primary-hover: #1a7f37;
  --error-bg: #ffebe9;
  --error-border: #ff8182;
  --error-text: #d1242f;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.5;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 16px;
}

.login-wrapper {
  width: 100%;
  max-width: 400px;
}

.login-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 32px 28px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

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

.brand-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-main);
}

.brand-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.form-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
}

.form-group input[type="text"],
.form-group input[type="password"] {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 14px;
}

.password-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.password-input-wrap input {
  padding-right: 40px;
}

.toggle-pw-btn {
  position: absolute;
  right: 10px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-muted);
  padding: 4px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid rgba(31, 35, 40, 0.15);
  border-radius: 6px;
  background-color: var(--primary);
  color: #fff;
}

.btn:hover:not(:disabled) {
  background-color: var(--primary-hover);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.full-width {
  width: 100%;
}

.feedback-msg {
  display: none;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 13px;
  margin-bottom: 16px;
}

.feedback-msg.error {
  display: block;
  background-color: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
}