.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
    background: var(--background-color);
}

.login-container h1 {
    margin-bottom: 24px;
    font-weight: 600;
    font-size: 20px;
    color: var(--title-color);
}

#login-form, #register-form {
    width: 100%;
    max-width: 360px;
    background: var(--surface-color);
    padding: 28px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

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

.form-group input {
    width: 100%;
    padding: 12px 14px;
    font-size: 14px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--surface-color);
    color: var(--text-color);
}

.form-group input::placeholder {
    color: var(--secondary-color);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: none;
}

.form-group .validation-tip {
    font-size: 12px;
    font-weight: 300;
    color: var(--danger-color);
    margin-top: 6px;
    display: block;
    min-height: 1.2em;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.form-group .validation-tip.visible { opacity: 1; }
.form-group input.invalid { border-color: var(--danger-color); }

.password-strength {
    display: flex;
    gap: 4px;
    margin-top: 8px;
    height: 4px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.password-strength.visible { opacity: 1; }
.strength-bar { flex-grow: 1; background-color: #e0e0e0; border-radius: 2px; transition: background-color 0.3s ease; }
.strength-bar.weak { background-color: var(--danger-color); }
.strength-bar.medium { background-color: #FF7D00; }
.strength-bar.strong { background-color: #00B42A; }
.strength-bar.very-strong { background-color: var(--primary-color); }

.captcha-group { display: flex; align-items: center; }
.captcha-group input { flex-grow: 1; margin-right: 10px; }

.captcha-wrapper {
    position: relative;
    width: 280px;
    height: 45px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background-color: var(--background-color);
    cursor: pointer;
    overflow: hidden;
}

.captcha-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: var(--secondary-color);
    font-size: 14px;
}

.captcha-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
}

.agreement-group {
    display: flex;
    align-items: flex-start;
    font-size: 11px;
    color: var(--secondary-color);
    margin-top: -8px;
    margin-bottom: 20px;
}

.agreement-group input[type="checkbox"] {
    width: 13px;
    height: 13px;
    margin-right: 6px;
    margin-top: 2px;
    flex-shrink: 0;
}

.agreement-group label {
    line-height: 1.5;
}

.form-actions { 
    display: flex; 
    flex-direction: column; 
    gap: 12px; 
    margin-top: 16px; 
}

.back-to-login { 
    text-align: center; 
    color: var(--secondary-color); 
    text-decoration: none; 
    font-size: 12px; 
    padding: 10px; 
}

.back-to-login:hover { 
    color: var(--primary-color); 
}